Training cartridge for a drug delivery device

Patent metadata

Field	Value
Publication number	US-9802002-B2
Application number	US-201113699316-A
Country	US
Kind code	B2
Filing date	May 31, 2011
Priority date	Jun 2, 2010
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

The present invention provides test or training a cartridge for a drug delivery device as well as a method for resetting of such cartridge, wherein the cartridge comprises: a body of substantially cylindrical shape, a piston slidably disposed in the body in an axial direction, a closure means disposed at an axial end portion of the body, wherein the body, the piston and the closure means confine an interior volume coupled to the exterior via at least one fluid escape channel.

First claim

The invention claimed is:

1. A training cartridge for a drug delivery device comprising:
a body of substantially cylindrical shape and extending along an axial direction,
a piston slidably disposed in the body in the axial direction,
a closure means disposed at an axial end portion of the body and sealing the end portion of the body, wherein the closure means comprises an axially inwardly facing end wall that abuts with an axial end face of the body or wherein the closure means comprises a radially outwardly extending flange portion which axially abut with the axial end face of the body,
wherein the body, the piston and the closure means confine an interior volume permanently coupled to an exterior via at least one fluid escape channel,
wherein the at least one fluid escape channel comprises a groove in a contact surface of an interface section of body and closure means, and
wherein the fluid escape channel forms a permanent passage for a liquid or a gas contained in the interior volume while the end wall or the flange portion of the closure means is in abutment with the axial end face of the body.

2. The training cartridge according to claim 1 , wherein the closure means comprises an inward facing fluid-impenetrable end wall and an outward facing socket portion.

3. The training cartridge according to claim 2 , wherein the socket portion comprises a septum sealing a cupped receptacle being separated from the interior volume.

4. The training cartridge according to claim 1 , wherein the closure means is releasably connectable with both axial end portions of the body.

5. The training cartridge according to claim 4 , wherein the body at its axial end portion comprises a stepped down rim portion radially overlapping with a corresponding receptacle of the closure means.

6. The training cartridge according to claim 1 , wherein the fluid escape channel is non-sealable.

7. The training cartridge according to claim 1 , wherein the fluid escape channel at least partially extends in an interface section of body and closure means in radial direction.

8. The training cartridge according to claim 1 , wherein the closure means is integrally formed with the body.

9. The training cartridge according to claim 1 , wherein the closure means comprises an axially inwardly facing plugging portion and an adjacent flange portion, wherein in an assembly configuration, the flange portion axially abuts against an axial end section of the body.

10. The training cartridge according to claim 1 , wherein the body and the closure means are releasably joined by means of a force- and/or form-fitting connection.

11. The training cartridge according to claim 1 , wherein the body comprises radially inwardly extending retention elements at its axial end sections adapted to prevent the piston from sliding out of the body.

Assignees

• Smith Christopher James
• Sanofi Aventis Deutschland

Inventors

• Smith Christopher James

Classifications

• A61M5/31573 Primary

  Accuracy improving means · CPC title

• G09B19/003

  Repetitive work cycles; Sequence of movements · CPC title

• G09B23/285

  for injections, endoscopy, bronchoscopy, sigmoidscopy, insertion of contraceptive devices or enemas · CPC title

• G09B19/24

  Use of tools · CPC title

• A61M5/178 Primary

  Syringes · CPC title