Title of Invention

"SOFT INTRAOCULAR LENS FOLDING DEVICE"

Abstract The present invention has a constitution, which is simple, and features outstanding reliability and economic efficiency, and enables handling and operation to be performed easily and with certainty when holding and folding a soft intraocular lens 3. A soft intraocular lens-folding device comprises a movable member 1 and a base member 2, The movable member 1 comprises an elastically bendable pair of legs 12a, 12b, and a common base 11 for connecting this pair of legs 12a, 12b. At the tips of the pair of legs 12a, 12b there is disposed lens-receiving portions 13a, 13bf and wall portions 14a, 14b. In the lens-receiving portions 13a, 13b, a soft intraocular lens 3 is set astride both legs. The wall portions 14a, 14b have the function of clamping a soft intraocular lens 3 set in the lens-receiving portions 13a, 13b. The base member 2 comprises a slide groove portion 21. This slide groove portion 21 is formed so as to allow the tips of the pair of legs 12a, 12b to penetrate and slide through, and, in addition, to narrow the gap of the pair of legs 12a, 12b in accordance with the extent of movement thereof.
Full Text BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a soft intraocular lens-folding device for folding a soft intraocular lens used in cataract operations and the like, and to a soft intraocular lens storage case for storing this soft intraocular lens,
2. Description, of the. Related Art
For example, in a cataract operation, the aim is to restore sight by a surgical procedure, which inserts into the eye a soft intraocular lens, which is an artificial lens, in place of a natural lens that has become opaque due to a cataract.
This soft intraocular lens has a circular optical lens portion, and a pair of supporting portions for stabilizing this optical lens portion inside the eye.
As this soft intraocular lens, there has beer, provided in recent years a soft intraocular lens., the optical lens.
portion of which is formed using silicon resin, acrylic resin, hydrogel, and other such materials,
By virtue of this soft intraocular lens, the optical lens portion can be deformed by being folded in two. In accordance therewith, in a case in which a soft intraocular lens is inserted into the eye, the optical lens portion can be inserted in a folded state. Numerous clinical advantages can be derived as a result thereof, such as making the size of the incision smaller at the time, of surgery, and faster recovery after surgery.
When using this soft intraocular lens, the optical lens portion must be folded beforehand prior to inserting the ,._ soft intraocular lens into the eye.
As methods for carrying out this folding operation, in the past there was a method, which makes use of a special forceps-snaped tool called an extractor, and a method, which makes use of a special jig called an injector.
In the method that uses an extractor, two extractors are used. That is, in this method, firstly, a first extractor is held in the right hand, and the center portion of the optical lens portion is clamped and held by this extractor. Next, in the as-is condition, this extractor is then switched to and held in the other hand, and a second extractor for intraocular insertion is held in the freed up right hand, and the optical lens portion is folded using

this second extractor. After confirming that the second. extractor is holding the optical lens portion securely in a folded condition, the first extractor is removed. Thereafter, the soft intraocular lens being folded by the second extractor is inserted into the eye.
In the method that uses an injector, firstly, after setting a soft intraocular lens inside an injector, the tip of that injector is inserted into the insertion part of the eye. Next, the extrusion aperture of the injector is operated, and the soft intraocular lens is inserted into the
eye from the tip of the injector (publication of Japanese
Patent application No. 4-212350, for example)
Furthermore, as a method other than the two method
described hereinabove, there has been proposed a method,
which makes use of the soft intraocular lens folder disclosed in Published Japanese translation of PCT international publication for patent application No.9-501574.
This soft intraocular lens folder is constituted such that 2 pairs of opposing jaws are formed respectively in a pair of pliers-shaped lever handles, and the edge of an optical lens portion is placed in and held by 4 supporting portions formed by these 2 pairs of jaws, and, in addition, by squeezing these lever handles, the gap of the pair of jaws of one side is made narrower, while at the same rime, the gap of the pair of jaws of the other side is made wider.
If this tool is used, when the optical lens portion being held by the 2 pairs of jaws is folded by being put between the pair of jaws of the one side,, it is possible to make the pair of jaws of the other side open and recede so as not to impede the folding thereof. In accordance therewith, folding can be performed with a soft intraocular lens being held as-is.
However, the inventors have clearly shown that the above-mentioned respective 3 methods have the following problems.
That is, in the above-mentioned method in which 2 extractors are used, a problem is that operation is complicated, a problem is that it is difficult to accurately grasp the center of an optical lens portion, and a problem is that there is•the danger of dropping a lens when switching an extractor from one hand to the other, and whe-p re-grasping a lens. Another problem is that since the center portion of an optical lens portion is grasped and held by an extractor, the most important portion of a soft intraocular lens from the standpoint of optics is apt to be damaged by the extractor. Based on the above, the problem is that in surgery, in which quick, accurate actions are especially required, this method imposed a significant burden even on the skilled physician.
The above-mentioned method in which an injector is used appears at a glance to be simple and reliable. However, in actuality, if a soft intraocular lens is not set inside an injector precisely from the standpoint of the injector mechanism, there is the danger of the soft intraocular lens getting stuck inside the injector,, and either not being able to be injected, or not being injected into the proper position. Therefore, with this method, a soft intraocular lens has to be set precisely inside an injector. However, with this method, the problem is that it was not always easy to set a soft intraocular lens precisely inside an injector.
In the above-mentioned method in which a lens folder is used, two different operations, i.e. narrowing the gap of one side of the 2 pairs of jaws, while at the same time widening the gap-of the other side must be carried out in concert. In accordance therewith, in this method, a problem is that the structure is complex, and it is apt to become very costly. Further, in this method, a problem is that, when folding an optical lens portion by manually operating the lever handle, if there is a mistake in the degree of force used in operating this handle, there is apt to be damage done to the optical lens portion by the application of unreasonable force to the optical lens portion, Furthermore, with this method, the folding of an optical lens portion must be carried out by holding the edge of the
optical lens portion in the proper position over the 4 supporting portions formed by the 2 pairs of jaws. However, a problem is that this operation is also unexpectedly troublesome, and considerable concentration is required to perform this properly. This is because, if the optical lens portion holding position is inaccurate, not only is it not possible to fold the optical lens portion accurately, there is also the danger that the soft intraocular lens will slip off during folding„
An object of the present invention is to provide a soft intraocular lens-folding device and storage case, which have simple constitutions offering super reliability and economical efficiency, and which are capable of performing handling and operating simply and reliably when holding and folding a soft, intraocular lens,
SUMMARY OF THE INVENTION
To solve the above-mentioned problems, a soft intraocular lens-folding device of a first .Invention has (1}-•( 4} hereinbelow as characteristics;
(1) A movable member and a base member,
(2) A movable, member comprises a pair of legs ana a.
connecting portion. The pair of legs is .made elastically
bendable. The connecting portion has the function of connecting the pair of legs.
(3) A lens-receiving portion and a wall portion are
disposed at the tips of the pair of legs. A soft
intraocular lens is set astride both legs in the lens-
receiving portion. The wall portion has the function of
clamping a soft intraocular lens set in the lens-receiving
portion.
(4) The base member comprises a slide groove portion.
This slide groove portion is formed so as to allow the tips
of the pair of legs to penetrate and slide through, and, in
addition, to narrowothe gap of the pair of legs in
accordance with the extent of the movement thereof„
A second invention is characterized in that the first invention comprises a load-absorbing portion. This load-absorbing portion is disposed on the pair of legs. Further, this load-absorbing portion has the function of carrying out bending deformation by centrally absorbing the deformation load acting on the pair of legs in accordance with this pair of legs moving inside the slide groove portion.
A third invention is characterized in that the first invention comprises a positioning portion. This positioning portion has the function of positioning in a prescribed location in the sliding direction of the movable member a
soft intraocular lens to be set in the lens-receiving portion.
A fourth invention is characterized in that the first invention comprises an orientation setting portion. This orientation setting portion has the function of setting the orientation of a soft intraocular lens set in the lens-receiving portion to a prescribed orientation in a direction of rotation with the central axis of this soft intraocular lens as the axis of rotation.
A fifth invention is characterized in that the first invention comprises a guide groove portion. This guide groove portion is disposed in £he slide groove portion. Further, this guide groove portion has the function of guiding the parts of the pair of legs that are to the rear of the tips.
A sixth invention is characterized in that the first invention comprises a rise-up preventing portion. This rise-up preventing portion has the function of preventing the movable member from rising up out of the slide groove portion.
A seventh invention is characterized in that the first invention comprises a positioning portion. This positioning portion has the function of positioning the lens-receiving portion in a lens-receiving location that enables the
setting of a soft intraocular lens in this lens-receiving portion.
An eighth invention is characterized in that the first invention comprises a positioning portion. This positioning portion has the function of positioning the lens-receiving portion in a lens-folding-completion position in which the folding of the above-mentioned soft intraocular lens set in this lens-receiving portion is completed.
A ninth invention is characterized in that the connecting portion of the first invention connects the base portion of the pair of legs.
A tenth invention is characterized in that the connecting portion of the first invention is integrally formed with the pair of legs.
To solve the above-mentioned problems, a soft intraocular lens storage case of an eleventh invention has (l)-(5) hereinbelow as characteristics.
(1) A movable member, a base member, and a lid member.
(2} A movable member comprises a pair of legs and a connecting portion, The pair of legs is made elastically bendable. The connecting portion has the function of connecting the pair of legs,
(3) A lens-receiving portion and a wall portion are disposed at the tips of the pair of legs, A soft intraocular lens is set astride both legs in the lens-

receiving portion. The wall portion has the function of clamping a soft intraocular lens set in the lens-receiving portion.
(4) The base member comprises a slide groove portion.
This slide groove portion is formed so as to allow the tips
of the pair of legs to penetrate and slide through, and, in
addition, to narrow the gap of the pair of legs in
accordance with the extent of the movement thereof.
(5) The lid member forms a lens storage space for
storing the above-mentioned soft intraocular lens set in the
lens-receiving portion,
A twelfth invention is characterized in that the lens storage space of the eleventh invention is opened and closed. by sliding the lid member,
A thirteenth invention is characterized in that the sliding direction of the lid member in the Ifwelfth invention is set in the same direction as the sliding direction of the movable member.
A fourteenth invention is characterized in that the sliding direction of the lid member for opening the lens storage space in the thirteenth invention is set in the same direction as the sliding direction of the movable member for folding a soft intraocular lens.
A fifteenth invention is characterized in that the movable member and the lid member of the fourteenth invention are capable of sliding independently,
A sixteenth invention is characterized in that the movable member and the lid member of the fifteenth invention :are capable of being slid and operate! together.
A seventeenth invention is characterized in that the eleventh invention comprises a load-absorbing portion. This load-absorbing portion is disposed on the pair of legs. And this load-absorbing portion performs bending deformation by centrally absorbing the deformation load acting on the pair of legs in accordance with this pair of legs moving inside the slide groove portion.
An eighteenth invention is characterized in that the
eleventh invention comprises a positioning portion. This
positioning portion has the function of positioning in a
prescribed location in the sliding direction of the movable member a soft intraocular lens to be set in the lens-receiving portion,
A nineteenth invention is characterized in that the eleventh invention comprises an orientation setting portion. This orientation setting portion has the function of setting the orientation of a soft intraocular lens set in the lens-receiving portion to a prescribed orientation in a direction
of rotation with the central axis of this soft intraocular lens as the axis of rotation.
A twentieth invention is characterized in that the eleventh invention comprises a guide groove portion. This guide groove portion is disposed in the slide groove portion. And this guide groove portion has the function of guiding parts of the pair of legs that are to the rear of the tips.
A twenty-first invention is characterized in that the eleventh invention comprises a rise-up preventing portion. This rise-up preventing portion has the function of preventing the movable member from rising up out of the slide groove portion.
A twenty-second invention is characterized in that the eleventh invention comprises a positioning portion. This positioning portion has the function of positioning the lens-receiving portion in a lens-receiving location that: enables the setting of a soft intraocular lens in this lens-receiving portion.
A twenty-third invention is characterized in that the eleventh invention comprises a positioning portion. This positioning portion has the function of positioning the lens-receiving portion in a lens-folding-completion position in which the folding of the above-mentioned soft intraocular lens set in this lens-receiving portion is completed.
A twenty-fourth invention is characterized in that the connecting portion of the eleventh invention connects the base portion of the pair of legs,
A twenty-fifth invention is characterized in that the connecting portion of the eleventh invention is integrally formed with the pair of legs.
A twenty-sixth invention is characterized in that the eleventh invention comprises the constitutions of the twelfth invention through the twenty-fifth invention,
A twenty-seventh invention is characterized in that the load-absorbing portion of the twenty-sixth invention is formed by partially narrowing the width of the legs.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. ^ is oblique views showing the constitution of a first aspect of the embodiment of a soft intraocular lens-folding device of the present invention;
Fig. 2 is diagrams showing the constitution of a second aspect of the embodiment of a soft intraocular- lens-folding device of the present invention;
Fig. 3 is diagrams showing the constitution of a first aspect of the embodiment of a soft intraocular lens storage case of the present invention, and diagrams showing a
condition of prior to a soft intraocular lens being folded;
and
Fig. 4 is diagrams showing the constitution of a first aspect of the embodiment of a soft intraocular lens storage case of the present invention, and a diagram showing a condition of after a soft intraocular lens has been folded.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Aspects of the embodiment of the present invention will be explained in detail hereinbelow by referring to the figures.
Fig. 1 is oblique views showing different conditions of the constitution of a first aspect of the embodiment of a soft intraocular lens-folding device of the present invention.
First of all, the soft intraocular lens-folding device shown in the figure comprises a movable member 1 and a base member 2. The movable member 1 is constituted so as to have a rectangular cross-sectional shape. In accordance therewith, the movable member 1 comprises a pair of legs 12a, 12b, and a connecting portion 11, which connects this pair of legs 12a, 12b at a base portion. Hereinafter, this connecting portion 11 will be called a common base. This common base 11 is integrally formed with the legs 12a, 12b.
The above-mentioned legs 12a, 12b extend practically parallel in the same direction from the common base 11. These legs 12a, 12b are elastically bendable.
On the upper surface of the tips of these legs 12a, 12b, there are disposed lens-receiving portions 13a, 13b and wall portions 14a, 14b.
In the lens-receiving portions 13a, 13b, the optical lens portion 3a of a soft intraocular lens 3 is set horizontally. In this case, the optical lens portion 3a is set such that the edge thereof spans the pair of legs 12a, 12b.
The wall portions 13a, 13b have the function of horizontally clamping the edge of the optical lens portion 3a, which is set in the lens-receiving portions 13a, 13b, when folding a soft intraocular lens 3. These wall portions 14a, 14b have opposing wall surfaces. These wall surfaces are inclined so as to draw near to one another- as they head upward (an overhang condition). This is to prevent an optical lens portion 3a from slipping out of the wall portions 14a, 14b when folding an optical lens portion 3a.
On the tips of the legs 12a, 125, tapered portions 15a, 15b are formed. These tapered portions 15a, 15b have the function of making operation smooth when the legs 12a, 12b interpenetrate a slide groove portion 21, which will be
explained hereinbelow, and are made to slide inside the slide groove portion 21.
The base member 2 comprises a slide groove portion 21. The above-mentioned pair of legs 12a, 12b horizontally interpenetrate and slide in this slide groove portion 21. This slide groove portion 21 comprises a tapered groove portion 21a, and a parallel groove portion 21b. The tapered groove portion 2la is formed such that the groove width gradually narrows toward the direction of interpenetration of the legs 12a, 12b (hereinafter referred to as the "travelling direction"). The parallel groove portion 21b is formed so as to extend in the above-mentioned travelling direction from the head of the tapered groove portion 2la. In this case, the groove width of the parallel groove portion 21b is set so as to be practically the same groove width as the groove width at the head of the tapered groove portion 2la. In accordance therewith, the gap of the legs 12a, 12b becomes narrower as the legs 12af 12b slide in the above-mentioned travelling direction.
The movable member 1 and the base member 2 are constituted by using a material that has appropriate degrees of elasticity and rigidity, such as, for example, a fluororesin, polyamide resin or aluminum. Furthermore, as this kind of material, resins, such as polyacrylate, polyethylene, polyethylene terephthalate, polyvinylchloride.
polycarbonate, polysulfon, polystyrene, polybutylene terephthalate, polypropylene, and poi3fmethylpentene, metals, such as duralmin, stainless steel, and titanium, or inorganic materials, such as ceramics can be used alone, or the above-mentioned resins, metals, and ceramics can be combined, and used as compounds.
The operation of the above-mentioned constitution will be explained.
A soft intraocular lens 3 comprises the above-mentioned optical lens portion 3a, and a supporting portion 3b. The optical lens portion 3a is formed in a circular shape. The supporting portion 3b has the function of stabilizing the optical lens portion 3b inside the eye. This supporting portion 3b is disposed on the edge of the optical lens portion 3a so as•to form a pair of arms. Further, this supporting portion 3b is formed in the shape of an arc* Furthermore, this supporting portion 3b is extended so as to head outwardly from the optical lens portion 3a.
When folding the above-mentioned soft intraocular lens 3, firstly, as shown in Fig. 1(A), the optical lens portion 3a is set (set) in the lens-receiving portions 13a, 13b by an operator. This setting is performed such that the edge of the optical lens portion 3a uniformly spans both legs 12a, 12b.
In an aspect of the present invention, this positioning can be performed by simply placing the optical lens portion 3a inside the above-mentioned wall portions 14a, 14b. This is because the position of the soft intraocular lens 3 is defined by the wall portions 14a, 14b in a direction that is orthogonal to the sliding direction of the movable member 1. Further, this setting is performed such that the direction of extension of the supporting portion 3b coincides with the sliding direction of the movable member 1.
Next, the tips of the legs 12a, 12b, on which the soft intraocular lens 3 is set, are made to interpenetrate the slide groove portion 21 by an operator. Thereafter, the movable member 1 is made to slide in the travelling direction by the operator. In accordance with the sliding thereof, the legs 12a, 12b are elastically bent in directions that cause them to draw near to one another. In accordance therewith, the gap of the legs 12a, 12b is narrowed. As a result thereof, the optical lens portion 3a is clamped by the wall portions 14a, I4b. In accordance therewith, the optical lens portion 3a is folded. In this case, the degree of bending of the legs 12a, 12b will depend on the degree of sliding thereof,
When the lens-receiving portions 13a, 13b reach the lens-folding-completion position by the sliding of the legs 12a, 12b, the sliding of the movable member 1 is halted.
This is because, for example, when the lens-receiving portions 13a, 13b reach the lens-folding-completion position, the parts of the legs 12a, 12b to the rear of the tips hit against the walls in the vicinity of the boundary between the tapered groove portion 2la and the parallel groove portion 21b, In accordance therewith, the lens-receiving portions 13a, 13b are positioned in the lens-folding-completion position. As a result thereof, the optical lens portion 3a, as shown in Fig. 1 (B), is folded into a prescribed condition. The folding of the optical lens portion 3a is completed by the above,
Furthermore, the lens-folding-completion position is the position in which the folding of an optical lens portion 3a is completed. This lens-folding-completion position, as shown in Fig. 1 (B)» is set inside the parallel groove portion 21b. That is, for example, this lens-foMing-completion position is set in a position such that the legs 12a, 12b make practically complete contact„
According to this aspect of the embodiment explained in detail hereinabove, after setting an optical'lens portion 3a in the lens-receiving portions 13a, 13b, the optical lens portion 3a can be folded by sliding the legs 12a, 12b under the guidance of the slide groove portion 21. In accordance therewith, an optical lens portion 3a can be reliably folded via a simple operation.
Further, according to this aspect of the embodiment, the main parts of the device can be constituted using a movable member I and a base member 2 of a simple structure. In accordance therewith, the device can be constructed simply, and at low cost. That is, the movable member 1 has a simple structure, in which the cross-section is a simples rectangular shape. Further, the legs 12a, 12b and the common base 11 are integrally constituted. In accordance therewith, the movable member 1, for example, can be manufactured simply and at low cost by a single resin forming process (one shot forming). Similarly, the base member 2 has a simple structure that forms a slide groove portion 21 in the base material. In accordance therewith, this base member 2, for example, can be manufactured simply and at low cost by the single resin forming process (one shot forming) mentioned above. As a result thereof, according to this aspect of the embodiment, a soft intraocular lens-folding device can be manufactured simply and at low cost.
Furthermore, according to this aspect of the embodiment,, when a soft intraocular lens 3 is set in the lens-receiving portions 13a, 13b, the soft intraocular lens 3 can be positioned by the pair of wall portions 14a, 14b in a prescribed position in a direction perpendicular to the sliding direction of the movable member 1. In accordance
Further, according to this aspect of the embodiment, the main parts of the device can be constituted using a movable member I and a base member 2 of a simple structure. In accordance therewith, the device can be constructed simply, and at low cost. That is, the movable member 1 has a simple structure, in which the cross-section is a simples rectangular shape. Further, the legs 12a, 12b and the common base 11 are integrally constituted. In accordance therewith, the movable member 1, for example, can be manufactured simply and at low cost by a single resin forming process (one shot forming). Similarly, the base member 2 has a simple structure that forms a slide groove portion 21 in the base material. In accordance therewith, this base member 2, for example, can be manufactured simply and at low cost by the single resin forming process (one shot forming) mentioned above. As a result thereof, according to this aspect of the embodiment, a soft intraocular lens-folding device can be manufactured simply and at low cost.
Furthermore, according to this aspect of the embodiment,, when a soft intraocular lens 3 is set in the lens-receiving portions 13a, 13b, the soft intraocular lens 3 can be positioned by the pair of wall portions 14a, 14b in a prescribed position in a direction perpendicular to the sliding direction of the movable member 1. In accordance
therewith, the position of the soft intraocular lens 3 in the above-mentioned direction can be reliably established.
Based on the above, according to this aspect of the embodiment, it is possible to provide a soft intraocular lens-folding device, which has a simple constitution offering superb reliability and economical efficiency, and which is capable of performing handling and operating simply and reliably when holding and folding a soft intraocular-lens .
And furthermore, according to this aspect of the embodiment, a pair of legs 12a, 12b are connected together 1% a base portion. In accordance therewith, the length of the legs 12a, 12b can be shortened. As a result thereof, it is possible to make the device smaller.
Further, according to this aspect of the embodiment, wall surfaces of the pair of wall portions 14a, 14b &re inclined so as to draw near to one another as they head upward. In accordance therewith, when folding an optical lens portion 3a, it is possible to prevent the optical lens portion 3a from slipping out of the wall portions 13a, 13b.
Fig, 2 is plan views and side views showing different conditions of the constitution of a second aspect of the embodiment of a soft intraocular lens-folding device of the present invention. Furthermore, in Fig. 2, the same reference numerals will be assigned to parts that serve
practically the same functions as those in the previous Fig, 1, and a detailed explanation thereof will be omitted.
In Fig. 2, (A) shows the condition of prior to folding a soft intraocular lens 3, (B) shows a side view of the device as seen in the direction of the arrows along line A-A shown in (A), (C) shows an exploded view of a portion of (A), and (D) shows the condition in which a soft intraocular lens 3 has been folded,
A device of this aspect of the embodiment will be explained hereinbelow by focusing on the points of difference with the device of the first embodiment,
That is, in the device of this aspect of Further, in the device of this aspect of the embodiment, a guide groove portion 21c is also disposed in the slide groove portion 21 in addition to a tapered groove portion 21a, and a parallel groove portion 21b. This guide groove portion 21c has the function of guiding parts of the legs 12a, 12b to the rear of the tips.
Furthermore, in the device of this aspect of the
embodiment, pressure guide portions 22a, 22b are provided on
both borders of the guide groove portion 21c. These
pressure guide portions 22a, 22b have the function of
preventing the movable member 1 from rising up from the
slide groove portion 21. a
And furthermore, in the device of this aspect of the embodiment, the width of the common base 11 in the sliding direction is set so as to be wider than that of the previous
aspect of the embodiment. This is for using the guide function of the guide groove portion 21c.
Further, in the device of this aspect of the embodiment, a stopper portion 17 is disposed at the rear portion of the movable member 1. This stopper portion 17 has the function of positioning the lens-receiving portions 13a, 13b in the lens-folding-completion position when the movable member 1 is made to slide in the travelling direction.
Furthermore, this stopper portion 17 is also used, as a pressure knob for an operator to push the movable member 1.
Furthermore, in the device of this aspect of the embodiment, small protrusions 18a, 18b are disposed, on both sides of the common base 11. These small protrusions 18a, 18b have the function of positioning the lens-receiving portions 13a, 13b in the lens setting position. Here, lens-receiving position refers to the position in which it is possible to set an optical lens portion 3a in the lens-receiving portions 13a, 13b. This position as shown in Fig. 2 (A), is set inside the guide groove portion 21c. That is, this position is set in a position such that: the legs 12a, 12b are practically not bent and deformed at all.
Locking grooves. 23a, 23t> are disposed on both sides of the guide groove portion 21c. The above-mentioned small protrusions 18a, 18b are mated to these locking grooves 23af 23b when the lens-receiving portions 13a, 13b are positioned in the lens-receiving position. This state is shown in Fig. 2 (A).
And furthermore, in the device of this aspect of the embodiment, a pair of perpendicular protruding portions 19a are disposed on the periphery of lens-receiving portion 13a on leg 12a as shown in Fig. 2 (C) . This pair' of perpendicular protruding portions 19a is arranged so as to be slightly separated in a direction that is perpendicular to the sliding direction of the movable member 1. Similarly, a pair of perpendicular protruding portions 19b are disposed
on the periphery of lens-receiving portion 13b on leg 12b as shown in Fig. 2 (C).
The above-mentioned perpendicular protruding portions 19af 19b are arranged so as to interpose the lens-receiving portions 13a, 13b therebetween. In the figure, there is shown a case in which the perpendicular protruding portions 19a of the one side are disposed in the travelling direction of the movable member 1 from the lens-receiving portions 13a, 13b, and the perpendicular protruding portions 19b of the other side are disposed in the opposite direction of the travelling direction (hereinafter referred to as the "reverse direction").
The above-mentioned perpendicular protruding portions 19a, 19b have the function of positioning a soft intraocular lens 3 in a prescribed position in the sliding direction of the movable member 1. This is because a soft intraocular lens 3 is set between the inner side of the perpendicular protruding portions 19a, 19b when set in the lens-receiving portions 13a, 13b. Moreover, this condition will hold a soft intraocular lens 3 even in a case in which, for example, the soft intraocular lens 3 is subjected to a shock. This is because even if a shock is appliesd to a soft intraocular lens 3, and the soft intraocular lens 3 attempts to move in the sliding direction of the movable member 1, the optical lens portion 3a collides with the inner sides of the
perpendicular protruding portions 19a, 19b, and is prevented from moving.
Further, the above-mentioned perpendicular protruding portions 19a, 19b have the function of setting the orientation of a soft intraocular lens 3 in a prescribed orientation in the direction of rotation, which treats the central axis of the optical lens portion 3a as the axis of rotation. This is because, when a soft intraocular lens 3 is set in the lens-receiving portions 13a, 13fo, the supporting portion 3b of the one side of the soft intraocular lens 3 is inserted between the corresponding pair of perpendicular protruding portions 19a, and the supporting portion 3b of the other side is inserted between the corresponding pair of perpendicular protruding portions 19b. Moreover, this condition will hold a soft intraocular lens 3 even in a case in which a shock is applied to the soft intraocular lens 3. This is because even if a shock is applied to a soft intraocular lens 3, and the soft intraocular lens 3 attempts to rotate in the above-mentioned direction of rotation, the supporting portions 3b collide with the inner sides of the perpendicular protruding portions 19a, 19b, and are prevented from moving.
The operation of the above-mentioned constitution, will be explained.
When folding a soft intraocular lens 3, firstly, the lens-receiving portions 13a, 13b are positioned by an operator in the lens-receiving position. This is shown in Fig. 2(A). At this time, the small protrusions 18a, 18b are mated to the locking grooves 23a, 23b. In accordance therewith, the lens-receiving portions 13a, 13b are positioned in a semi-fixed condition in.the lens-receiving position.
Next, a soft intraocular lens 3 is set in the lens-receiving portions 13a, 13b by an operator. At this time, the optical lens portion 3a is positioned by the wall portions 14a, 14b in a prescribed position orthogonally to
the sliding direction of the movable member 1. Further, the optical lens portion 3a is positioned in a prescribed position in the sliding direction of the movable member 1, This is because the supporting portion 3b of the one side of the soft intraocular lens 3 is positioned between the corresponding pair of perpendicular protruding portions 19a, and the supporting portion 3b of the other side is positioned between the corresponding pair of perpendicular protruding portions 19b. Similarly, the orientation of the optical lens portion 3a is set at a prescribed orientation of the direction of rotation, which treats the central axis thereof as the axis of rotation.
Next, an operator pushes the stopper portion 17 in the travelling direction of the movable member 1,. In accordance therewith, when the stopper portion 17 is pushed with a force greater than the mating force of the small protrusions 18a, IBb and the locking grooves 23a, 23bf the movable member I is made to slide in the travelling direction.
In accordance therewith, the pair of legs 12a, 12b are subjected to bending deformation by the tapered groove portion 2la. The deformation load acting on the legs 12a, 12b at this time is centrally absorbed by the load absorbing portions 16a, 16b. In accordance therewith, the folding load acting on the optical lens portion 3a is alleviated. Further, the gap of the pair of wall portions 14a, 14b is narrowed while maintaining a parallel condition. In
accordance therewith, the optical lens portion 3a is folded
accurately and stably along the centerline thereof.
Further, even if a soft intraocular lens 3 is subjected to a shock or the like during this sliding process, the soft
intraocular lens 3 is positioned in a prescribed position, and, in addition, the orientation thereof is set to a prescribed orientation by the actions of the wall portions 14a, 14b and the perpendicular protruding portions 19a, 19b. By so doing, when the lens-receiving portions 13a, 13b reach the lens-folding-completion position, the stopper-portion 17 hits the rearward end portion of the base member
2. In accordance therewith, the sliding of the movable member I is stopped. As a result thereof, the lens-receiving portions 13a, 13b are positioned in the lens-receiving position. In accordance therewith, the folding of the optical lens portion 3a is completed. This situation is shown in Fig. 2 (D).
According to this aspect of the embodiment explained hereinabove, when the movable member 1 is made to slide, the deformation load acting on the legs 12a, 12b thereof can be centrally absorbed by the load absorbing portions 16a, 16b. In accordance therewith, the folding load acting on the optical lens portion 3ajcan be alleviated.
Further, according to a constitution such as this, when folding an optical lens portion 3a, the gap of the wall portions 14a, 14b can be narrowed while accurately maintaining the parallel condition of both wall portions 14a, 14b. In accordance therewith, the optical lens portion 3a can be folded accurately along the centerline thereof. As a result thereof, the optical lens portion 3a can be stably and accurately folded without losing the optical functions thereof.
Further, according to this aspect of the embodiment, when the movable member 1 is made to slide, the parts to the rear of the tips of the legs 12a, 12b can be guided by the guide groove portion 21c. In accordance therewith, the
side-to-side rolling of the movable member 1 can be prevented. As a result thereof, the movable member 1 can be made to slide stably.
Furthermore, according to this aspect of the embodiment, when the movable member 1 is made to slide, the movable member 1 can be prevented from rising up from the slide groove portion 21 by the pressure guide portions 22a, 22b. In accordance therewith, it is possible to prevent the movable member 1 from slipping out of the slide groove portion 21. As a result thereof, the movable member 1 can be made to slide stably.
And furthermore, according to^his aspect of the embodiment, when the movable member 1 is made to slide in the travelling direction, the lens-receiving portions 13a, 13b can be positioned in the lens-folding-completion position by the stopper portion 17. In accordance therewith, the lens-receiving portions 13a, 13b can be prevented from going beyond the lens-folding-completion position despite the fact that the elasticity of the legs 12a., 1.2b has been weakened by the provision of the load absorbing portions 16a, 16b.
Further, according to this aspect of the embodiment, when the lens-receiving portions 13a, 13b reach the lens-receiving position, the movable member 1 is immobilized in a semi-fixed condition by the small protrusions 18a, ISb and
the locking grooves 23a, 23b. In accordance therewith, in a case in which a shock is applied from externally to the movable member 1, it is possible to prevent an accident in which the movable member 1 slides in the travelling 5 direction, and a soft intraocular .lens 3 set in the lens-receiving portions 13a, 13b is damaged. Further, it is also possible to prevent an accident in which the movable member 1 moves in the reverse direction, and the movable member 1 falls out of the base member 2.
10 Furthermore, according to this aspect of the embodiment, when an optical lens portion 3a is set in the lens-receiving portions 13a, 13b, the optical lens portion 3a can be positioned by the perpendicular protruding portions 19a, 19b in a prescribed position in the sliding direction of the
15 movable member 1. In accordance therewith, an optical lens portion 3a can be folded with uniform force about any point in the radial direction thereof.
And furthermore, according to this aspect of the embodiment, when an optical lens portion 3a is set in the
20 lens-receiving portions 13a, 13b, the orientation of the optical lens portion 3a can be set in a prescribed orientation in the direction of rotation, which treats the central axis thereof as the axis of rotation. In accordance therewith, the optical lens portion 3a can be folded along a
25 prescribed centerline that passes through the center thereof.

Fig. 3 and Fig, 4 are plan views and side views showing different conditions of constitutions of a first aspect of the embodiment of a soft intraocular lens storage case of the present invention. Furthermore, in Fig. 3 and Fig. 4, 5 the same reference numerals will be assigned to parts that serve practically the same functions as those in the previous Fig, 2, and a detailed explanation thereof will be omitted.
The storage case shown in these figures provides a lid 10 member 4 to the 'lens-folding device shown in Fig. 2, and is constituted such that a storage space is formed for storing a soft intraocular lens 3.
Here, Fig. 3 shows a condition in which a soft intraocular lens 3 is stored in a storage case, and Fig, 4 15 shows a condition in which a stored soft intraocular lens 3 is folded.
In Fig. 3, (A) shows a condition in which a lid member 4 is mounted, (B) shows a side view of the device as seen from the direction of the arrows along line A-A shown in (A) , 20 (C) shows a condition in which the lid member 4 has been removed, and (D) shows a side view of the device as seen from the direction of the arrows along line C-C shown in (C).
Further, in Fig. 4, (A) shows a condition in which a lid member 4 is mounted, (B) shows a condition in which the 25 lid member 4 has been removed, and (C) shows a side view of
the device as seen from the direction of the arrows along line B-B shown in (B).
Furthermore, a portion of reference numerals concerning parts shared in common with Fig. 2 have been omitted in Fig. 5 3 and Fig. 4.
A soft intraocular lens storage case of this aspect of the embodiment comprises a movable member 1, a base member 2, and a lid member 4. The constitution of parts of the movable member 1 and base member 2 other than parts related 10 to the lid member 3 are practically the same as those shown in Fig. 2. Therefore, detailed explanations of the parts thereof will be omitted in the explanation hereinbelow.
The above-mentioned lid member 4 is formed in the shape of a nearly rectangular plate. On this lid member 4, there 15 is disposed a pair of latching protuberant portions 4la, 41b for mounting this lid member 4 to the base member 2. This pair of latching protuberant portions 41a, 41b is disposed on the side edge portions of the two long sides of the lid member 4, respectively.
20 In the above-mentioned base member 2, there is disposed a pair of latching groove portions 24a, 24b for holding the above-mentioned lid member 4 in a freely sliding manner. These latching groove portions 24a, 24b are formed in the sliding direction of the movable member 1.
In these latching groove portions 24a., 24b, there are disposed insertion opening portions 2.5a, 25b for mating the above-mentioned latching protuberant portions 41a, 41b to the latching groove portions 24a, 24b. These insertion 5 opening portions 25a, 25b are disposed in the latching groove portions 24a, 24b in the end portions in the travelling direction of the movable member 1.
In the center portion of the above-mentioned lid member 4, there is disposed a lens-viewing window portion 42 for 10 viewing the lens storage space from externally. Further, on the bottom surface of this lid member 4, there are formed support protruding portions 43a, 43b for forming the lens storage space.
Furthermore, the lid member 4 and the movable member 1 15 can slide independently of one another. However, both eire designed so as fo be able to be operated together. This is accomplished, for example, by setting the clearance in the up-down direction for both members to clearances that enable both members to be pushed by hand together,
20 The operation of the above-mentioned constitution will be explained.
Firstly, the operation for storing a soft, intraocular lens 3 in the lens storage space will be explained.
In this case, first, the lens-receiving portions 13a, 25 13b are positioned by an operator in the lens-receiving

position as shown In Fig. 3 (C). Further, the operator removes the lid member 4 from the base member 2, Next, the operator sets a soft intraocular lens 3 in the lens-receiving portions 13a, 13b. Next, as shown in Fig. 2 (A), 5 the lens storage space is closed using the lid member 4. In accordance with the above, the operation for storing a soft intraocular lens 3 in a lens storage space is completed,
Here, the operation for closing the lens storage space using the lid member 4 will be explained. In this case,
10 firstly, the latching protuberant portions 41a, 41b are
inserted into the insertion opening portions 25a, 25b. Next, the lid member 4 is made to slide in the reverse direction of legs 12a, 12b. In accordance therewith, the lid member 4 is mounted to the base member 12a, 12b. As a result thereof,
15 the lens storage space is closed by the lid member 4. Furthermore, the sliding of the lid member 4 is performed to end portion of the latching groove portions 24a, 24b, That is, the sliding of the lid member 4 is performed until the end of the reverse direction of 12a, 12b of the
20 movable member 1, In accordance therewith, the viewing window portion 42 is positioned in the lens-receiving position. As a result thereof, it is possible to view from externally via the viewing window portion 42 the soft intraocular lens 3 set in the lens-receiving portions 13a,
25 13b.
Further, the support protruding portion 43a of the one side is positioned so as to overlap with the corresponding pair of perpendicular protruding portions 19a. Similarly, the support protruding portion 43b of the other side is 5 positioned so as to overlap with the corresponding pair of perpendicular protruding portions 19b. In accordance therewith, the supports for supporting the lid member 4 are formed by the support protruding portions 43a, 43b and the perpendicular protruding portions 19a, 19b. As a result
10 thereof, the strength of the lid member 4 is reinforced. As a result thereof, the lens storage space can be stably maintained.
Further, in this case, the upper end portions of the pair of perpendicular protruding portions 19a of the one
15 side are closed off by the support protruding portion 43a. Similarly, the upper end portions of the pair of perpendicular protruding portions 19b of the other side are closed off by the support protruding portion 43b. In accordance therewith, the supporting portion 3b of the one
20 side of a soft intraocular lens 3 is prevented from slipping out of the corresponding pair of perpendicular protruding portions 19a, Similarly, the supporting portion 3b of the other side is prevented from slipping out of the corresponding pair of perpendicular protruding portions 19a.
25 As a result thereof, the position and orientation of a soft
intraocular lens 3 is prevented from shifting even in a case in which the soft intraocular lens 3 is subjected to a shock.
Next, an operation for folding a soft intraocular lens 3, and removing same from the lens storage space will be 5 explained.
This operation comprises an operation for opening the lens storage space, and an operation for folding a soft intraocular lens 3. In this aspect of the embodiment, these operations can be performed separately, and they can also be 10 performed together,
Firstly,, an operation of a case in which both operations are -performed separately will be explained.
In this case, firstly, the lid member 4 is made to slide in the travelling direction of the movable member 1 by 15 an operator. This sliding movement is carried out until the latching protuberant portions 4la, 41b reach the insertion opening portions 25a, 25b. When the latching protuberant portions 4la, 41b reach the insertion opening portions 25a, 25b, the sliding movement of the latching protuberant 20 portions 41a, 41b is stopped. This is because the latching protuberant portions 41a, 41b hit against the walls of the insertion opening portions 25a, 25b. Next, the lid member 4 is raised from the base member 2 by the operator. In accordance therewith, the lens storage space is opened.
Next, the movable member 1 is made to slide in the travelling direction by the operator. This sliding movement is carried out until the stopper 17 hits against the rearward end portion of the base member 2. When the stopper 5 17 hits against the rearward end portion of the base member 2, the sliding movement of the movable member 1 is stopped. In accordance therewith, the lens-receiving portions 13a, 13b are positioned in the lens-folding-completion position. As a result thereof, the folding of the optical lens portion
10 3a is completed.
Next, the folded soft intraocular lens 3 is lifted from the iens-receiving portions 13a, 13b by the operator. In accordance with the above, the operations for removing a soft intraocular lens 3 from the lens storage
15 space is ended.
Next, an operation of a case in which an operationofor opening the lens storage space, and an operation for folding a soft intraocular lens 3 are performed together will be explained.
20 In this case, firstly, the lid member 4.and the movable member 1 are pushed at the same time by an operator. In accordance therewith, the lid member 4 and the movable member 1 are made to slide in the travelling direction of the movable member 1, The sliding movement is carried out
25 until the stopper 17 hits against the rearward end portion
of the base member 2, In accordance therewith, an optical lens portion 3a is folded in a prescribed condition.
Further, at this time, the latching protuberant portions 4la, 41b reach the insertion opening portions 25a, 25b. 5 Next, the lid member 4 is lifted from the base member 2 by the operator. In accordance therewith, the lens storage space is opened. Next, the folded soft intraocular lens 3 is lifted from the lens-receiving portions 13a, 13b by the operator.
10 In accordance with the above, the operation for
removing a soft intraocular lens 3 from the lens storage space is ended.
According to this aspect of the embodiment explained in detail hereinabove, because a lens storage space for storing
15 a soft intraocular lens 3 set in the lens-receiving portions 13a, 13b is formed by using a lid member 4, i€ is possible to handle the soft intraocular lens 3 set in the lens-receiving portions 13a, 13b in a condition in which same does not come in direct contact with the outside. In
20 accordance therewith, when the soft intraocular lens 3 thereof is transported from the soft intraocular lens 3 manufacturer side to the user side, it is possible to carry the soft intraocular lens 3 in a condition in which same is set in the lens-receiving portions 13a, 13b. As a result
25 thereof, it is possible to eliminate the trouble of setting
a soft intraocular lens 3 in the lens-receiving portions 13a, 13b at the soft intraocular lens user side.
Further, according to this aspect of the embodiment, because the lens storage space is opened and closed by means 5 of the sliding movement of a lid member 4, the open-close constitution of the lens storage space can be made simple.
Furthermore, according to this aspect of the embodiment, because the sliding direction of the lid member 4 is set to the same direction as the sliding direction of the movable
10 member 1, it is possible to enhance the operability in a
case in which an operator opens and closes the lens storage sparse, and a case in which a soft intraocular lens 3 is folded.
And furthermore, according to this aspect of the
15 embodiment, because the sliding direction of the lid member 4 for opening the lens storage space is set to the samg direction as the sliding direction of the movable member I for folding a soft intraocular lens 3, it is possible to make the soft intraocular lens stojrage case compact.
20 Further, according to this aspect of the embodiment, because the lid member 4 and the movable member 1 can be made to slide independently, it is possible to separately carry out an operation for opening the lens storage space, and an operation for folding a soft intraocular lens 3, In
25 accordance therewith, it is possible to perform a soft
intraocular lens 3 folding operation while confirming the folding condition thereof.
Furthermore, according to this aspect of the embodiment, because the lid member 4 and movable member 1 can be 5 operated together, it is also possible to carry out the above-mentioned 2 operations at the same time as a single operation. In accordance therewith, it is possible to shorten the time from starting the folding of a soft intraocular lens 3 until removing the folded soft
10 intraocular lens 3 .
And furthermore, according to this aspect of the embodiment, beSause there is provided support protruding portions 43ar 43b, which coincide with the perpendicular protruding portions 19a, 19b, it is possible to reinforce
15 the strength of the lid member 4. Further, it is also
possible to maintain with certainty in a prescribed position and orientation the position and orientation of a soft intraocular lens 3, In accordance therewith, in a case in which a soft intraocular lens 3 is transported from the
20 manufacturer side to the user side in a condition in which same is stored in the storage case, it is possible to prevent the soft intraocular lens 3 from slipping out of the lens-receiving portions 13a, 13b even if the soft intraocular lens 3 is subjected to a shock.
And furthermore, in the above aspects of the embodiment, an explanation was given of a case in which the lid member 4 and the movable member 1 can slide independently. However, the present invention can also be constituted such that both 5 the lid member 4 and the movable member 1 can slide by interlocking. That is, the present invention can be constituted such that when one side is made to slide, the other side also slides automatically by interlocking thereto, According to a constitution such as this, by an operation 10 that makes one side slide, the other side can also be made to slide even if both are not operated together.
Further, according to the above aspects of the
embodiment, an explanation was given of a case in which latching protuberant portions 4la, 41b, which constitute the
15 sliding mechanism of the lid member 4, are disposed on the
lid member 4, and latching groove portions 24a, 24b and
insertion opening portions 25a, 25b are disposed on the base member 2. However, the present invention can also be constituted such that latching protuberant portions 41a, 41b
20 are disposed on the base member 2, and latching groove
portions 24a, 24b and insertion opening portions 25a, 25b are disposed on the lid member 4.
Furthermore, in the above aspects of the embodiment, an explanation was given of a case in which the sliding
25 direction of the lid member 4 for opening the lens storage
And furthermore, in the above aspects of the embodiment, an explanation was given of a case in which the lid member 4 and the movable member 1 can slide independently. However, the present invention can also be constituted such that both 5 the lid member 4 and the movable member 1 can slide by interlocking. That is, the present invention can be constituted such that when one side is made to slide, the other side also slides automatically by interlocking thereto, According to a constitution such as this, by an operation 10 that makes one side slide, the other side can also be made to slide even if both are not operated together.
Further, according to the above aspects of the embodiment, an explanation was given of a case in which latching protuberant portions 4la, 41b, which constitute the
15 sliding mechanism of the lid member 4, are disposed on the
lid member 4, and latching groove portions 24a, 24b and
insertion opening portions 25a, 25b are disposed on the base member 2. However, the present invention can also be constituted such that latching protuberant portions 41a, 41b
20 are disposed on the base member 2, and latching groove
portions 24a, 24b and insertion opening portions 25a, 25b are disposed on the lid member 4.
Furthermore, in the above aspects of the embodiment, an explanation was given of a case in which the sliding
25 direction of the lid member 4 for opening the lens storage
space is set in the same direction as the sliding direction of the movable member 1 for folding a soft intraocular lens 3. However, the present invention can also be constituted such that these sliding directions are set in opposing 5 directions.
And furthermore, in the above aspects of the embodiment, an explanation was given of a case in which the sliding direction of the lid member 4 is set. in the same direction as the sliding direction of the movable member 1. However,
10 the present invention can also be constituted such that these sliding directions are set in different directions. For example, the present invention can be constituted such that these sliding directions are set orthogonally.
Further, in the above aspects of the embodiment, an
15 explanation was given of a case in which the lid member 4 is mounted to the base member 2 in a freely detachable manner. However, the present invention can also be constituted such that the lid member 4 is permanently mounted to the base member 2.
20 Furthermore, in the above aspects of the embodiment,, an explanation was given of a case in which the lens storage space is opened and closed by the slide constitution of the lid member 4. However, the present invention can also be constituted such that opening and closing is performed by a
25 method other than this. For example, the present invention
can be constituted such that the .lens storage space opens and closes either by a detachable constitution that uses a hook mechanism, or by a rotating constitution that uses a hinge mechanism,
5 In addition thereto, the present invention naturally can have all sorts of variations and modifications of this embodiment within a scope that does not depart from the gist thereof.
As described in detail hereinabove, according to a
10 first invention and an eleventh invention, after setting a soft intraocular lens in a lens-receiving portion, the soft intraocular lens can be folded by making the legs slide under the guidance of a slide groove portion. In accordance therewith, a soft intraocular lens can be reliably folded
15 via a simple operation. Further, according to the first invention thereof, rhe main parts of the device can be constituted in accordance with a simply structured movable member and base member. In accordance therewith, the device can be manufactured easily and at low cost. Furthermore,
20 according to the first invention thereof, when a soft
intraocular lens is set in the lens-receiving portion, the soft intraocular lens can be accurately positioned by a pair of walls in a prescribed position in a direction that is orthogonal to the sliding direction of the movable member.
In accordance therewith, the optical lens portion can be-reliably folded along the centerline thereof.
Based on the above, according to the first invention, the constitution is simple, and features outstanding 5 reliability and economic efficiency,, and handling and
operation can be performed easily and with certainty when retaining and folding a soft intraocular lens.
Further, according to the second invention, the seventeenth invention, the twenty-sixth invention, and the
10 twenty-seventh invention, when the movable member is made to slide, deformation load acting on the legs can be centrally absorbed by a load-absorbing portion. In accordance therewith, it is possible to alleviate the folding load placed on a soft intraocular lens, and, in addition, it is
15 possible to stably and accurately fold the soft intraocular lens without losing the optical functiorfs theareof.
Furthermore, according to the third invention, the eighteenth invention, the twenty-sixth invention, and the twenty-seventh invention, a soft intraocular lens set in the
20 lens-receiving portion can be positioned in a prescribed
position in the sliding direction of the movable member. In accordance therewith, it is possible for the optical lens portion to be folded with uniform force anywhere about the radial direction thereof.
And furthermore, according to the fourth Invention, the nineteenth invention, and, the twenty-sixth invention, the orientation of a soft intraocular lens set in the lens-receiving portion can be set to a prescribed orientation in 5 a direction of rotation, with the central axis of the
optical lens portion as the axis of rotation. In accordance therewith, it is possible to reliably fold the optical lens portion along a prescribed centerline.
Further, according to the fifth invention, the
10 twentieth invention, and the twenty-sixth invention, when the movable member is made to slide, parts that are to the rear of 'the tips of the legs can be guided by a guide groove portion. In accordance therewith, because it. is possible to prevent the side-to-side rolling of the movable member, the
15 movable member can be made to slide stably.
Furthermore, according to the sixth invention, the o twenty-first invention, and the twenty-sixth invention, when the movable member is made to slide, the movable member can be prevented from rising up out of the slide groove portion.
20 In accordance therewith, it is possible to prevent the
movable member from slipping out of the slide groove portion.
And furthermore, according to the seventh invention, the twenty-second invention, and the twenty-sixth invention, because there is provided a positioning portion for
25 positioning the lens-receiving portion in the lens-receiving
position, the lens-receiving portion can be prevented from moving from the lens-receiving position even in a case in which a shock is applied to the movable member.
Further, according to the eighth invention, the twenty-5 third invention, and the twenty-sixth invention, because there is provided a positioning portion for positioning the lens-receiving portion in the lens-folding-completion position when the movable member is made to slide in the travelling direction, the lens-receiving portion can be
10 reliably positioned in the lens-folding-completion position.
Furthermore, according to the ninth invention, the twenty-fourth invention, and the twenty-sixth invention, because the pair of legs is connected at the base portion, the length of the legs can be shortened.
15 And furthermore, according to the tenth invention, the twenty-fifth invention, and the twenty-si^th invention, because the connecting portion is integrally formed with the legs, the movable member can be easily manufactured.
Further, according to the eleventh invention, because
20 the storage space for storing a soft intraocular lens set in the lens-receiving portion is formed, using a lid member, a soft intraocular lens set in the lens-receiving portion can be handled in a condition, wherein same does not make direct contact with the outside. In accordance therewith, when
25 transporting a soft intraocular lens from the soft
intraocular lens manufacturer side to the soft intraocular lens user side, it is possible to transport the soft intraocular lens in a condition, wherein same is set in the lens-receiving portion. 5 Furthermore, according to the twelfth invention,
because the lens storage space is opened and closed by means of the sliding movement of the lid member, the open-close constitution of the lens storage space can be made simple.
And furthermore, according to the thirteenth invention,
10 because the sliding direction of the lid member is set to the same direction as the sliding direction of the movable member, operability can be enhanced in0 a case in which an operator opens and closes the lens storage space, and a case in which a soft intraocular lens is folded.
15 According to the fourteenth invention, because the sliding direction of the lid member for opening the lens storage space is set to the same direction as the sliding direction of the movable member fox- folding a soft intraocular lens, the soft intraocular lens storage case can
20 be made compact.
According to the fifteenth invention, because it is possible to make the lid member and the movable member slide independently, an operation for opening the lens storage space, and an operation for folding a soft intraocular lens
25 can be performed separately. In accordance therewith, it is







We Claim:
1. A soft intraocular lens-folding device comprising :
a movable member (1); and base member (2)
wherein said movable member comprising an elasticaliy bendable pair of legs (12a & 12b), and a connecting portion for connecting this pair of legs (11)
and at the tips of said pair of legs, there are disposed a lens-receiving portion (13a fit 13b) for setting a soft intraocular lens astride both legs, and a wall portion (14a & 14b) for clamping said soft intraocular lens set in this lens-receiving portion, and said base member comprising a slide groove portion (21), which allows the tips of said pair of legs to penetrate and slide through, and which, in addition is formed so as to narrow the gap between said pair of legs in accordance with the extent of movement thereof
2. The soft intraocular lens-folding device as claimed in claim i, comprising
a load absorbing portion, which is disposed on said pair of legs, and
which bends and deforms by centrally absorbing the deformation load
placed on this pair of legs by this pair of legs moving inside said slide
groove portion.
3. The soft intraocular lens-folding device as claimed in claim 1 comprising
a positioning portion for positioning said soft intraocular lens set in said
lens-receiving portion in a prescribed position in the sliding direction of
said movable member.
4. The soft intraocular lens-folding device as claimed in claim 1, comprising
an orientation setting portion for setting the orientation of said soft
intraocular lens set in said lens-receiving portion to a prescribed
orientation in a direction of rotation, with the central axis of this soft
intraocular lens as the axis of rotation.
5. The soft intraocular lens folding device as claimed in claim 1, comprising
a guide groove portion, which is disposed in said slide groove portion,
and which is disposed in said slide groove portion, and which guides a
part that is to the rear of the tips of said pair of legs.
6. The soft intraocular lens-folding device as claimed in claim 1, comprising
a rise-up preventing portion for preventing said movable member from
raising up out of said slide groove portion.
7. The soft intraocular lens-folding device as claimed in claim 1, comprising
a positioning portion for positioning said lens-receiving portion in a
lens-receiving position which enables said soft intraocular lens to be set
in this lens-receiving portion.
8. The soft intraocular lens-folding device as claimed in claim 1, comprising
a positioning portion for positioning said lens-receiving portion in a lens
folding completion position in which the folding of said soft intraocular
lens set in this lens receiving portion is completed,
9. The soft intraocular lens-folding device as claimed in claim 1, wherein
said-connecting portion connects the base of said pair of legs.
10. The soft intraocular lens-folding device as claimed in claim 1, wherein
said connecting portion is integrally formed with said pair of legs.
11. A soft intraocular lens folding device as claimed in claim 1 wherein said
device optionally comprises of a lid member which forms the lens
storage space for storing said intraocular lens set in this lens receiving
portion, comprising :
a movable member a base member a lid member
wherein said movable member comprises an elastically bendable pair of legs, and a connecting portion for connecting this pair of legs
and at the tips of said pair of legs, there are formed a lens-receiving portion for setting a soft intraocular lens astride both legs, and a wall portion for clamping said soft intraocular lens set in this lens receiving portion,
said base member comprises a slide groove portion, which allows the tips of said pair of legs to penetrate and slide through, and which, in addition, is formed so as to narrow the gap between said pair of legs in accordance with the extent of movement thereof
and said lid member forms a lens storage space for storing said soft intraocular lens set in said lens receiving portion.
12. The soft intraocular lens storage case as claimed in claim 11, wherein
said lens storage space opens and close by means of the sliding
movement if said lid member.
13. The soft intraocular lens storage as claimed 12, wherein the sliding
direction of said lid member is set in the same direction as the sliding
direction of said movable member.
14. The soft intraocular lens storage case as claimed in claim 13, wherein the
sliding direction of said lid member for opening said lens storage space is
set in the same direction as the sliding direction of said movable member
for folding said soft intraocular lens,,
15. The soft intraocular lens storage case as claimed in claim 14, wherein
said movable member and said lid member are independently slidable.
16. The soft intraocular lens storage case as claimed in claim 15, wherein
said movable member and said lid member can be operated together,
17. The soft intraocular lens storage case as claimed in claim 11, comprising
a load absorbing portion, which is disposed on said pair of legs, and
which bends and deforms by centrally absorbing the deformation load
placed on this pair of legs by this pair of legs moving inside said slide
groove portion.
18. The soft intraocular lens storage case as claimed in claim 11 comprising a
positioning portion for positioning said soft intraocular lens set in said
lens-receiving portion in a prescribed position in the sliding direction of
said movable member.
19. The soft intraocular lens storage case as claimed in claim 11, comprising
an orientation setting portion for setting the orientation of said soft
intraocular lens set in said le ns-receiving portion to a prescribed
orientation in a direction of rotation, with the central axis of this soft
intraocular lens as the axis of rotation.
20. The soft intraocular lens storage case as claimed in claim 11, comprising
a guide groove portion, which is disposed in said slide groove portion,
and which is disposed in said slide groove portion, and which guides a
part that is to the rear of the tips of said pair of legs.
21. The soft intraocular lens storage case as claimed in claim 11, comprising
a rise-up preventing portion for preventing said movable member from
raising up out of said slide groove portion.
22. The soft intraocular lens storage case as claimed in claim 11, comprising
a positioning portion for positioning said lens-receiving portion in a
lens-receiving position which enables said soft intraocular lens to be set
in this lens-receiving portion.
23. The soft intraocular lens storage case device as claimed in claim 11,
comprising a positioning portion for positioning said lens-receiving
portion in a lens folding completion position in which the folding of said
soft intraocular lens set in this lens receiving portion is completed.
24. The soft intraocular lens storage case as claimed in claim 115 wherein
said-connecting portion connects the base of said pair of legs.
25. The sort intraocular lens storage case as claimed in claim 11, wherein
said connecting portion is integrally formed with said pair of legs.
26. The soft intraocular lens storage case as claimed in claim 11 comprising a
load absorbing portion, which is disposed on said parr of legs, and which
bends and deforms by centrally absorbing the deformation load placed
on this pair of legs by this pair of legs moving inside said slide groove
portion
a positioning portion for positioning said soft intraocular lens set in said lens-receiving portion in a prescribed position in the sliding direction of said movable member.
an orientation setting portion for setting the orientation of said soft intraocular lens set in said lens-receiving portion to a prescribed orientation in a direction of rotation, with the central axis of this soft intraocular lens as the axis of rotation.
a guide groove portion, which is disposed in said slide groove portion, and which guides a part that is to the rear of the tips of said pair of legs.
a rise-up preventing portion for preventing said movable member from raising up out of said slide groove portion,
a positioning portion for positioning said lens-receiving portion in a lens-receiving position which enables said soft intraocular lens to be set in this lens-receiving portion.
a positioning portion for positioning said lens-receiving portion in a lens folding completion position in which the folding of said soft intraocular lens is completed.
wherein said connecting portion is integrally formed with said pair of legs so as to connect the base of this pair of legs.
said lens storage space opens and closes by means of the sliding movement of said lid member, and the sliding direction of said lid member is set in the same direction as the sliding direction of said pair of legs
the sliding direction of said lid member for opening said lens storage space is set in the same direction as the sliding direction of said movable member for folding said soft intraocular lens
said pair of legs and said lid member are independently slidable
and said pair of legs and said lid member can be operated together,
27. The soft intraocular lens storage case as claimed in claim 26, wherein said load absorbing portion is formed by locally narrowing the width of said less.
28. A soft intraocular lens-folding device substantially as herein described with reference to the accompanying drawings.



Documents:

in-pct-2001-148-del-abstract.pdf

in-pct-2001-148-del-assignment.pdf

in-pct-2001-148-del-claims.pdf

in-pct-2001-148-del-correspondence-others.pdf

in-pct-2001-148-del-correspondence-po.pdf

in-pct-2001-148-del-description (complete).pdf

in-pct-2001-148-del-drawings.pdf

in-pct-2001-148-del-form-1.pdf

in-pct-2001-148-del-form-13.pdf

in-pct-2001-148-del-form-19.pdf

in-pct-2001-148-del-form-2.pdf

in-pct-2001-148-del-form-3.pdf

in-pct-2001-148-del-form-5.pdf

in-pct-2001-148-del-pa.pdf

in-pct-2001-148-del-pct-210.pdf

in-pct-2001-148-del-pct-304.pdf


Patent Number 246299
Indian Patent Application Number IN/PCT/2001/00148/DEL
PG Journal Number 08/2011
Publication Date 25-Feb-2011
Grant Date 23-Feb-2011
Date of Filing 16-Feb-2001
Name of Patentee HOYA HEALTHCARE CORPORATION
Applicant Address 5-1, NISHI-SHINJUKU, 6-CHOME, SHINJUKU-KU, TOKYO, 163-1308, JAPAN.
Inventors:
# Inventor's Name Inventor's Address
1 EGAWA YOSHIKAZU 5-1, NISHI-SHINJUKU, 6-CHOME, SHINJUKU, TOKYO, 163-1308, JAPAN.
PCT International Classification Number A61F 2/16
PCT International Application Number PCT/JP00/04648
PCT International Filing date 2000-07-12
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 11/197629 1999-07-12 Japan