Title of Invention

IMPROVEMENTS IN AND RELATING TO A MEDICAMENT DELIVERY DEVICE

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

Documents:

1624-chenp-2004 abstract.pdf

1624-chenp-2004 claims.pdf

1624-chenp-2004 correspondence others.pdf

1624-chenp-2004 correspondence po.pdf

1624-chenp-2004 description (complete).pdf

1624-chenp-2004 drawings.pdf

1624-chenp-2004 form 1.pdf

1624-chenp-2004 form 18.pdf

1624-chenp-2004 form 3.pdf

1624-chenp-2004 form 5.pdf

1624-chenp-2004 pct.pdf

1624-chenp-2004 petition.pdf

1624-chenp-2004 power of attorney.pdf

EXAMINATION REPORT REPLY.PDF


Patent Number 240323
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:
# Inventor's Name Inventor's Address
1 VEASEY, Robert, Frederick 35 Hitchman Road, Leamington Spa, Warwickshire CV31 1QH
2 LANGLEY, Christopher, Nigel 120 Leicester Lane, Leamington Spa, Warwickshire CV32 7HH
PCT International Classification Number A61M 5/145
PCT International Application Number PCT/GB03/00298
PCT International Filing date 2003-01-23
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 0201686.3 2002-01-25 U.K.