| Title of Invention | IMPROVEMENTS IN AND RELATING TO A MEDICAMENT DELIVERY DEVICE |
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| Abstract | The present invention relates to a medicament delivery device such as a pen type injector used to expel medicament from a medicament cartridge under the action of a lead screw. The medicament cartridge typically comprises a cylinder having a displaceable piston at one end displacement causing medicament contained within the cartridge to be expelled. It is of advantage to know when the plunger contacts the displaceable piston since no delivery of medicament can occur before this point. A delivery device is disclosed in which a lead screw (2) for a medicament delivery device comprises a shaft portion (8) and a head portion (10), the head portion (10) further comprising a fixed part (18), a displaceable part (20) movable with respect to the fixed part, biasing means acting normally to urge the displaceable part (20) away from the fixed part (18) and a sensor (40) to detect when the displaceable part moves towards the fixed part, one of the fixed part and the displaceable part being provided with a plurality of resilient fingers (22) extending axially with respect to the lead screw, and the other of the fixed part and the displaceable part being provided with a plurality of openings (32), each of the resilient fingers extending within a corresponding opening. |
| Full Text |
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1624-chenp-2004 correspondence others.pdf
1624-chenp-2004 correspondence po.pdf
1624-chenp-2004 description (complete).pdf
1624-chenp-2004 power of attorney.pdf
| Patent Number | 240323 | |||||||||
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| Indian Patent Application Number | 1624/CHENP/2004 | |||||||||
| PG Journal Number | 20/2010 | |||||||||
| Publication Date | 14-May-2010 | |||||||||
| Grant Date | 05-May-2010 | |||||||||
| Date of Filing | 22-Jul-2004 | |||||||||
| Name of Patentee | DCA DESIGN INTERNATIONAL LIMITED | |||||||||
| Applicant Address | 19 Church Street, Warwick CV34 4AB | |||||||||
Inventors:
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| PCT International Classification Number | A61M 5/145 | |||||||||
| PCT International Application Number | PCT/GB03/00298 | |||||||||
| PCT International Filing date | 2003-01-23 | |||||||||
PCT Conventions:
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