Medical Device with Orientation Sensitive Priming Mechanism

• US 20090005735A1
• Filed: 02/19/2007
• Published: 01/01/2009
• Est. Priority Date: 03/03/2006
• Status: Abandoned Application

• Current Assignee: SHL Group AB
• Original Assignee: SHL Group AB
• Inventors: Brunnberg, Lennart, Wikner, Jakob
• Application Number:
  US12/280,485
• Publication Number:
  US 20090005735A1
• Time in Patent Office: Days
• US Class Current: 604/131
• CPC Class Codes: A61M 11/007 Syringe-type or piston-type sprayers or atomisers
• CPC Class Codes: A61M 11/02 operated by air or other gas pressure applied to the liquid or other product to be sprayed or atomised sprayers for horticulture A01G, A01H; killing insects A01M; air humidifying by nozzles F24F6/14, F24F6/18; cooling by spraying F28B, F28C
• CPC Class Codes: A61M 15/009 using medicine packages with incorporated spraying means, e.g. aerosol cans pocket atomiser of the injector type A61M11/08
• CPC Class Codes: A61M 2005/2013 triggering of discharging means by contact of injector with patient body
• CPC Class Codes: A61M 2205/215 Tilt detection, e.g. for warning or shut-off
• CPC Class Codes: A61M 2205/276 preventing unwanted use
• CPC Class Codes: A61M 5/20 Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically A61M5/142 , A61M5/46 take precedence; hypodermic projectiles F42B12/54
• CPC Class Codes: A61M 5/2448 comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/3146 Priming, e.g. purging, reducing backlash or clearance
• CPC Class Codes: A61M 5/31551 including axial movement of dose setting member
• CPC Class Codes: A61M 5/31553 without axial movement of dose setting member
• CPC Class Codes: A61M 5/3156 using volume steps only adjustable in discrete intervals, i.e. individually distinct intervals
• CPC Class Codes: A61M 5/31563 interacting with a displaceable stop member
• CPC Class Codes: A61M 5/31578 based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod
• CPC Class Codes: A61M 5/31583 based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod
• CPC Class Codes: A61M 5/3204 Needle cap remover, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices
• CPC Class Codes: A61M 5/326 Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user

Abstract

The present invention relates to a device for a medical device, which medical device comprises a body (10, 12), a container (24) containing medicament, the container further comprising an expelling passage, and delivery drive means (36) for expelling said medicament, wherein said device comprises mechanical priming drive means (57) and mechanical priming activation (40) means being arranged and designed such that said mechanical priming activation means is capable of permitting activation of said mechanical priming drive means only when the medical device is substantially vertical with the expelling passage into an specific direction.

Claims

1-13. -13. (canceled)

14. A medicament delivery device, comprising:

a front housing;

a rear housing;

a container containing medicament arranged within the front housing and having an expelling passage;

delivery drive means for expelling the medicament;

first mechanical priming drive means connected to the rear housing;

second mechanical priming drive means connected to the delivery drive means and movable in relation to the first mechanical priming drive means and the rear housing;

mechanical priming activation means movably arranged in relation to the first mechanical priming means respective the second mechanical priming drive means and the rear housing in such a way that under a predetermined specific direction of the expelling passage the mechanical priming activation means permits the second mechanical priming drive means to be moved; and

spring means arranged to interact with the rear housing and the second mechanical priming drive means in such a way that the spring means exerts a force on the second mechanical priming drive means for holding the second mechanical priming drive means apart from the mechanical priming activation means, thereby avoiding jamming of the mechanical priming activation means.

15. The device of claim 14, wherein the mechanical priming activation means comprises at least one ball, or pendulums, or tilt members.

16. The device of claim 15, wherein the at least one ball is movable to a position enabling the second mechanical priming drive means to be moved when the device is substantially vertical.

17. The device of claim 16, wherein the at least one ball, when the device is held substantially vertical, acts as an intermediate in interaction between the first mechanical priming drive means respective second mechanical priming drive means and the rear housing.

18. The device of claim 16, wherein the at least one ball, when the device is not held substantially vertical, blocks movement of the second mechanical priming drive means.

19. The device of claim 18, wherein the at least one ball, when the device is held substantially vertical, acts as an intermediate in interaction between the first mechanical priming drive means respective second mechanical priming drive means and the rear housing.

20. The device of claim 14, wherein the device is provided in an injection device and the expelling passage is directed upwards.

21. The device of claim 20, wherein the mechanical priming activation means comprises at least one ball, or pendulums, or tilt members.

22. The device of claim 21, wherein the at least one ball is movable to a position enabling the second mechanical priming drive means to be moved when the device is substantially vertical.

23. The device of claim 22, wherein the at least one ball, when the device is held substantially vertical, acts as an intermediate in interaction between the first mechanical priming drive means respective second mechanical priming drive means and the rear housing.

24. The device of claim 22, wherein the at least one ball, when the device is not held substantially vertical, blocks movement of the second mechanical priming drive means.

25. The device of claim 24, wherein the at least one ball, when the device is held substantially vertical, acts as an intermediate in interaction between the first mechanical priming drive means respective second mechanical priming drive means and the rear housing.

26. The device of claim 14, wherein the device is provided in an inhalation device having a canister of a pressurized metered dose inhaler, and the expelling passage is directed downwards.

27. The device of claim 26, wherein the mechanical priming activation means comprises at least one ball, or pendulums, or tilt members.

28. The device of claim 27, wherein the at least one ball is movable to a position enabling the second mechanical priming drive means to be moved when the device is substantially vertical.

29. The device of claim 28, wherein the at least one ball, when the device is held substantially vertical, acts as an intermediate in interaction between the first mechanical priming drive means respective second mechanical priming drive means and the rear housing.

30. The device of claim 28, wherein the at least one ball, when the device is not held substantially vertical, blocks movement of the second mechanical priming drive means.

31. The device of claim 30, wherein the at least one ball, when the device is held substantially vertical, acts as an intermediate in interaction between the first mechanical priming drive means respective second mechanical priming drive means and the rear housing.

32. The device of claim 14, wherein the second mechanical priming drive means includes a priming sleeve and a setting sleeve, and the first mechanical priming drive means includes an intermediate sleeve.

33. The device of claim 32, wherein the priming sleeve comprises sloping surfaces on which the ball can roll, for controlling the movement of the ball between an activation position and a non-activation position.