|Title of Invention||
ADVANCED INTRAVENOUS INFUSION SET
|Abstract||The advanced Intravenous infusion set for infusing fluid in to body vessels comprises in combination a Drip chamber having floatable plastic or latex ball and corresponding sized cavity having opening in its base, A calibrated drop rate regulator comprising of a housing having inlet and outlet forming a passage for passing of tube which is compressed by a CAM driven by moving two uniaxialy engaged two bolts having calibrated head, a Y shaped outer nozzle for connecting Intravenous infusion set to branula or SV Set, A tube made of resilient material plastic or rubber connecting drip chamber to outer nozzle via calibrated drop rate regulator and a stopper.|
|Full Text||TITLE OF INVENTION ADVANCED INTRAVENOUS
FIELD OF INVENTION The invention relates to improvement in devices
for parental infusion of fluid through intravenous infusion devices.
BACKGROUND OF INVENTION:
Many drugs are given to patient in form of fluid infusion in various modes like:
- Some drugs are infused in dose escalating manner i.e. drug/mm. Have to be
increased with time until desired effect is achieved, e.g.-
1. Dopamine for raising blood pressure in hypotensive crisis.
2. Dobutamine for raising blood pressure in hypotensive crisis
3. G.T N. for lowering blood pressure in hypertensive crisis, M.I.
4. Phenytoin infusion in status epilepticus
5. Meg. Sulphate in eclampsia
6. Oxytocin infusion to induce or augment labor
-Some drug are infused in dose decreasing manner.
-Some drug are infused in fixed rate like fluid infusion in neonates and infants. These modes of drug infusion are very crucial in management as it is usually required in managing emergencies. So dose infusion should be precise. It is achieved by following ways-
Intravenous infusion set: The known state of art comprises of an drip Chamber,
a flow regulator and a connecting outer nozzle
Drip Chamber The know state of art comprises of vertical chamber made of
transparent resilient material. It has two ends upper end have a needle made of
plastic for insertion in source of infusing fluid, lower end have opening in its base
and continues as outlet
Air embolism Although due to use of drip Chamber air embolism has low chances to occur, but in case if one forgets to close fluid flow after an infusion bottle ends, air enters i.v. set. If an another infusion bottle has to be follow, air
embolism. So to prevent air embolism i.v. set has to be removed from cannula. Air is
cleared away by flushing and then it is reconnected
It results in wastage of drug and time and high chances of air embolism.
It is ramp & roller device [as such known art] comprises of housing with a ramp&
guided roller co acting on said ramp. Tube having solution passes underneath the
roller, over the ramp by moving the roller, flow rate is controlled.
• No calibrations
• It is cumbersome to set desired flow rate as one has
to count drops, every time he moves roller and if
desired count is not achieved he have to repeat the
same process hit an trial method.
• 3to4 min. is consumed to set a desired flow rate.
Outer Nozzle It is a tube made of hard plastic with tapering ends. One end
connect it with tube of I.V. Set and second end connect it with needle, cannula and S.V. Set
Poor flushing If cannula is blocked, it is flushed to regain flow. It is
done by stopping infusion and disconnecting it from cannula. Flushing is done with help of saline shot by syringe. Infusion is regained by reconnecting outer nozzle to cannula. Now again adjust flow rate by hit and trial method. It results in wastage of a syringe and time.
Unable to add another Intravenous infusion set Another Intravenous infusion set is added with help of another cannula or using "Three-way" device i.e. extra burden on patient's pocket.
2. FLOW CONTROL DEVICE for controlling flow of a liquid dispensed Intravenously in metered quantities, [patent no-166726-india] Drawbacks-
• Device is in direct contact with drug, so drug spillage may
occur within device around diaphragm
• Not universally available till date
3. BATTERY OPERATED INFUSION PUMP [patent no-180771-indial
• Battery or electronic circuit failure may occur.
• High cost
• Technical knowledge required for its use.
• In case of mass casuality, device availability for each
patient is noneconomical & may not be feasible.
• As volume capacity of syringes used is limited and low,
so fluid infusion of large volumes requires refilling many
4. APPARATUS FOR ADMINISTRATION OF PARENTAL FLUIDS
[patent no-151725-indial apparatus comprising of a container adapted to
support a pliant bag_containing infusion liquid^pressure applying means_(any gas like O2,N2, COa etc.) to apply pressure on a pliant bag through a diaphragm. Drawbacks -
• Depends upon gas availability.
• Useful only for drugs in a pliant bag i.e. not useful for
drugs dispensed in hard packing and glass bottles
• High cost.
• Technical knowledge required for its use.
OBJECT OF INVENTION
To make an infusion set having features like anti air embolism, better flow rate control with calibrated control, easy to flush and having capability to add another infusion set simultaneously in same cannula. STATEMENT OF INVENTION
The advanced intravenous infusion set having features like anti air embolism, better flow rate control, calibrated control, easy to flush and having capability to add another infusion set with it.
SUMMERY OF INVENTION
The advance intravenous infusion set consists of
• Partially immersed but floating ball made of plastic/latex with in drip
Chamber to prevent air embolism.
• Calibrated drop rate controlling device
• Y-shaped outer nozzle
• A stopper in between Calibrated drop rate controlling device and Y-shaped
outer nozzle (just proximal Y-shaped outer nozzle).
Brief description of the invention with accompanying drawings;
• Fig-1 it is a block diagram of The advance intravenous infusion device
• Fig-2 it shows drip Chamber (A)
• Fig-3 it shows outer nozzle (B).
• Fig-4 it shows drop rate regulator(C)
• Fig-5 it shows components of jgwiMM drop rate regulator(C)
• Fig-6 it shows mechanism of KMtfMtt drop rate regulator(C)
Detail description of the invention with accompanying drawings;
The advance intravenous infusion set will now be more described with reference to accompanying drawings submitted along with provisional specification, where in: Advance intravenous infusion set consists of five parts as following: Part It is modified drip chamber 1 made of transparent resilient plastic chamber having a cap 2 with needle for insertion in infusion bottle or any other source of drug to be infused.
Drip Chamber outlet 3 continues as tube E. Filter 4 fitted in upper part of drip chamber for filtering infusion fluid.
A plastic or latex ball 5 is put inside the drip chamber. Its weight is adjusted so that it floats like an iceberg. It floats when fluid is present in the drip chamber. When drip chamber is about to empty, it comes down and gets fit in in base of its corresponding size covering one-third of ball 5's area. This 4fe 6 has an opening 8 in its base 7 which open chamber outlet 3 . Weight of plastic or latex ball 5 is adjusted so that its major portion remain below water
surface. When fluid is about to vanish in drip Chamber ball 5 comes down and fits
in the cavity rife 6 as a result opening 8 gets blocked , now air cannot enter in the tube E, When infusion bottle is changed and drip Chamber 1 is filled again with fluid, ball 5 goes up opening 8 gets open. Now fluid will enter in tube E again. Modifications as compare to known art—
• Filter 4 fitted in upper part of drip Chamber for filtering infusion fluid
• A plastic or latex ball 5 is put inside the drip Chamber.
• A cavity 6 in base 7 of drip Chamber.
Alternate form — a housing having a filter in its lower part & having a cavity 5 in upper
part can be placed at base of drip Chamber.
Part B (Fig. 3) This part is outer nozzle(B) which connects tube E to cannula (not shown in figure) the modified outer nozzle(B) consists Y shaped body 9 having slightly tapered first end 10 and second end 11 to facilitate connections. Third end 12 is having a removable cap 13.
Tube E is connected to first end 10 second end 11 is inserted in cannula. Third end 12 facilitates flushing and also to connect another IV. sets, so that at same time two infusion bottles can infuse through same cannula. I.V. Injection can be given through it.
Thus this outer nozzle (B) serves three purposes: -1 Connects tube E to cannula.
2. It ends need of "three way" devices to connect another infusion bottle
through same cannula.
3. Another infusion bottle can be infused through same cannula so there is
no need of another cannula.
4. IV injections can be given by using syringe only without using needle.
So it saves cost of another cannula, two ways or three way, needle to patients.
Part C -^ It is a ^calibrated drop rate regulator which controls rate of fluid infusion estimated by no. of drops per minute entering in drip Chamber,
Drop rate regulator device consists of five part named as blocks a, b, c, d and eas shown in Fig. 5.
Fig. 4, shows scheme diagram showing configuration of devices.
Block a -r It acts as housing device having inlet 15 and outlet 14 making a canal
through which tube E passes. One part of this housing acts as a nut (17) having threading.
Canal (16) and nut (17)are interconnected through a square passage,(19) which facilitates linear motion of block e and restricts its circular motion. .
Block b -> It is a modified bolt having a passage (23) through its body calibrated head
and having thread at tail end (20)only. Stopper (22) are made on body to restrict complete
unscrewing of modified screw.
Block c -> It is a bush and fitted inside the Block b. It acts as a nut for tail end'bf
Block d It is modified screw having calibrated head, Stopper? ball shaped knob
attached at its tail end which forms Ball and socket type of joint with block e. Block
d fits into passage of block b and it is also longer than block b.
It is a rectangular block having a socketAat one end and a pointed wedge
at other end. It act as CAM.
Fig. 4 represents the scheme diagram of drop rate regulator. Block c is fitted inside
of the block b at its tail end. Now block b is screwed into block c such that its kno
lies beyond tail end of block b. Now block e by its socket" is attached with ball
shaped knob"of block O, then this whole assembly is screwed into block a. Such that block e enters into square passage and block b fits into nut of block a. Tube E is passed through canal Fig. 6 shows how this regulator acts. Head" of block b is screwed to its full, as result
of which wedge of block e compresses tube Ho major extent (approx. 90%). Moving
head'bf block d compresses rest of 10% due to which drop rate alters. Head /bf block
have cal liberation in drops per min. so desired drop rate is achieved by compression of tube E by moving head of bloc desired calibration. ,
1. The advanced Intravenous infusion set for infusing fluid in to body
vessels comprises in combination a Drip chamber having floatable plastic or latex ball (5) and corresponding sized cavity naving opening in its
base (7) calibrated drop rate regulator A Comprising of a housing having
inlet and outlet (14) Forming a passage for passing of tube E which is compressed by a CAM driven by moving two uniaxialy engaged two bolts-having calibrated head, a Y shaped outer connecting Intravenous infusion set to branula or SV Set, & tube made of resilient material plastic or rubber connecting drip chamber*to outer nozzle via calibrated drop rate regulatorand a stoppers.
2. Advanced Intravenous infusion set as claimed in claim No. 1 where
in drip chamber having a filter1 in its upper parts, a floatable plastic or
latex ball and a cavity in its base of corresponding size of ball, and
n in its base of cavity which continues as outlet. In an optional
feature a housing having a filter in its lower part & having cavity with opening in its base in its upper part, can be placed at base of drip chamber
3. Advanced intravenous infusion set as claimed in claim no. 1. Where
in there is calibrated drop rate regulatoVwhich is a housing having inlef
& outlet forming a passageifor tube E at its one end, other end forms a
passage'having threading on internal side so that it acts as a nut, both
passages are interconnected through a sqfere passage Aso that tube E in
passage is compressed by moving uniaxialy arranged 2 bolt,^one bush
and one CAM.
4. Advanced intravenous infusion set as claimed in claim no.l&3 cali-
brated drop rate regulator having a CAM compressing tube E by its
wedge shape gnd xzonnected to bolt'With ball & socket joint, the boltMs
engaged with outer boltMtirough a bush as described in description &. illustrated in accompanyzing drawings.
5. Advance intravenous infusion set as claimed in claim no. 1 where
in there is Y shaped outer nozzle"having three ends, by first end"it is
connected with tube E, second end'for connecting with branula or SV
set , third end having a removable cap-tor connecting with another IV set or syringe for flushing and injection of drugs.
6. Advanced intravenous infusion set substantially as here in above Describe with reference to the accompanying drawings.
|Indian Patent Application Number||975/DEL/2004|
|PG Journal Number||25/2008|
|Date of Filing||28-May-2004|
|Name of Patentee||RAIKA JAY PRAKASH|
|Applicant Address||C/O Bhag Singh Panwar, Pana Ghilan, near dholi chupal V.P.O. Murthal, Sonipat PIN 131027|
|PCT International Classification Number||A61M 5/14|
|PCT International Application Number||N/A|
|PCT International Filing date|