Drug Delivery Devices and Related Components, Systems and Methods

• US 20090043282A1
• Filed: 04/26/2006
• Published: 02/12/2009
• Est. Priority Date: 04/29/2005
• Status: Abandoned Application

• Current Assignee: Wyeth (Pfizer Inc.)
• Original Assignee: Wyeth (Pfizer Inc.)
• Inventors: Hughes, Martin, Harmer, Paul, Hourmand, Yannick, Seymour, Darren, Turner, Colin
• Application Number:
  US11/912,003
• Publication Number:
  US 20090043282A1
• Time in Patent Office: Days
• US Class Current: 604/518
• CPC Class Codes: B01F 31/40 with an axially oscillating rotary stirrer
• CPC Class Codes: B01F 31/441 performing a rectilinear reciprocating movement
• CPC Class Codes: B01F 33/5011 portable during use, e.g. hand-held
• CPC Class Codes: B01F 33/50112 of the syringe or cartridge type
• CPC Class Codes: B01F 35/752 with arrangements for converting the mechanism from mixing to discharging, e.g. by either guiding a mixture back into a receptacle or discharging it
• CPC Class Codes: B01F 35/75425 using pistons or plungers

Abstract

This description relates to drug delivery devices (100), as well as related components, systems and methods.

Claims

1. A drug delivery device, comprising:

an agitator assembly disposed within a mixing chamber defined by a tubular member of the drug delivery device, the agitator assembly being configured to axially reciprocate within the mixing chamber.

2. The drug delivery device of claim 1, wherein the delivery device is configured to prevent further axial reciprocation of the agitator assembly after a predetermined number of cycles of axial reciprocation.

3. The drug delivery device of claim 1, wherein the agitator assembly is operably connected to a rotary drive such that rotation of the rotary drive causes the axial reciprocation of the agitator assembly.

4. The drug delivery device of claim 3, wherein rotation of the rotary drive in a single direction causes the axial reciprocation of the agitator assembly.

5. The drug delivery device of claim 3, wherein the rotary drive is configured to rotatably lock after a predetermined number of rotations.

6. The drug delivery device of claim 5, wherein the rotary drive comprises a projection extending therefrom, the projection being arranged to mate with a recess defined in a substantially rotatably fixed component of the drug delivery device after the predetermined number of rotations.

7. The drug delivery device of claim 6, wherein the projection extends from a drive runner connected to the rotary drive, and the substantially rotatably fixed component comprises a ring extending about the drug delivery device.

8. The drug delivery device of claim 1, wherein the agitator assembly is further configured to rotate within the mixing chamber.

9. The drug delivery device of claim 1, wherein the agitator assembly is configured to reciprocate in a substantially helical motion within the mixing chamber.

10. The drug delivery device of claim 1, wherein the agitator assembly comprises an agitator shaft and an agitator secured to the agitator shaft.

11. The drug delivery device of claim 10, wherein the agitator comprises a plurality of projections extending radially from the agitator shaft.

12. The drug delivery device of claim 1, wherein the tubular member of the drug delivery device comprises a radial projection, and the agitator shaft comprises a channel helically extending around an exterior surface thereof and configured to receive the projection.

13. The drug delivery device of claim 12, wherein the projection extends radially inward from an inner surface of the tubular member.

14. The drug delivery device of claim 1, further comprising a therapeutic agent disposed within the mixing chamber.

15. The drug delivery device of claim 14, wherein the therapeutic agent comprises a powdered substance.

16. The drug delivery device of claim 14, wherein the therapeutic agent comprises an osteogenic agent.

17. The drug delivery device of claim 1, further comprising a piston assembly operably connected to the tubular member and configured to axially displace the tubular member relative to an axially fixed distal member of the drug delivery device.

18. The drug delivery device of claim 17, wherein the piston assembly is configured such that an axial force applied to the piston assembly causes an axial force to act on the tubular member, the axial force acting on the tubular member being greater than the axial force applied to the piston assembly.

19. The drug delivery device of claim 18, wherein the axial force acting on the tubular member is greater than the axial force applied to the piston end by a factor of about 40.

20. The drug delivery device of claim 17, wherein the piston assembly is configured such that an axial displacement of the piston assembly causes axial displacement of the tubular member, the axial displacement of the piston assembly being greater than the axial displacement of the tubular member.

21. The drug delivery device of claim 20, wherein the axial displacement of the piston assembly is greater than the axial displacement of the tubular member by a factor of about 40.

22. The drug delivery device of claim 17, wherein the piston assembly is configured to convert axial displacement a first component into rotational displacement of a second component.

23. The drug delivery device of claim 17, wherein the axially fixed distal member comprises an annular void arranged to receive a distal end region of the tubular member therein.

24. The drug delivery device of claim 17, wherein the axially fixed distal member comprises a luer connection.

25. The drug delivery device of claim 17, wherein the axially fixed distal member forms an ejection chamber that is fluidly connected to the mixing chamber.

26. The drug delivery device of claim 17, wherein the piston assembly forms a central lumen that is in fluid communication with the mixing chamber.

27. A drug delivery system comprising:

a drug delivery device forming a mixing chamber therein;

a manifold releasably attachable to the delivery device, the manifold comprising a first vial configured to contain a first substance and a second vial configured to contain a second substance, the first and second vials being in fluid communication with one another such that when the first vial contains the first substance and the second vial contains the second substance the first and second substances can be combined to form a third substance; and

an fluid moving device in fluid communication with the manifold and arranged to combine the first and second substances when activated in a first mode and to deliver the third substance to the mixing chamber of the drug delivery device when activated in a second mode.

28. The drug delivery system of claim 27, further comprising a therapeutic agent disposed within the mixing chamber.

29. The drug delivery system of claim 28, wherein the therapeutic agent comprises a powdered substance.

30. The drug delivery system of claim 28, wherein the therapeutic agent component comprises an osteogenic agent.

31. The drug delivery system of claim 27, wherein at least one of the first and second substances comprises a liquid.

32. The drug delivery system of claim 27, wherein one of the first substance comprises water and the second substance comprises a concentrate.

33. The drug delivery system of claim 27, wherein the drug delivery device further comprises an agitator assembly disposed within the mixing chamber, the agitator assembly being configured to axially reciprocate within the mixing chamber.

34. The drug delivery system of claim 27, wherein the drug delivery device further comprises a piston assembly operably connected to a tubular member that defines the mixing chamber, the piston assembly being configured to axially displace the tubular member to reduce the volume of the mixing chamber.

35. The drug delivery system of claim 27, wherein the manifold comprises a cover to which the first and second vials are capable of being secured, the cover being slidably disposed within a cavity of the manifold.

36. The drug delivery system of claim 35, wherein the manifold comprises first and second needles extending from a surface opposite the cover, the first and second needles being capable of penetrating the first and second vials, respectively, when the cover is slid within the cavity toward the needles.

37. The drug delivery system of claim 27, wherein the fluid moving device comprises a syringe.

38. The drug delivery system of claim 27, wherein activating the fluid moving device in the first mode causes fluid to be withdrawn from one of the vials, and activating the fluid moving device in the second mode causes fluid to be introduced into one of the vials.

39. A method, comprising:

axially reciprocating an agitator assembly within a mixing chamber of a drug delivery device to mix a plurality of substances within the mixing chamber; and

after mixing the plurality of substances, ejecting the plurality of mixed substances from the mixing chamber.

40. The method of claim 39, wherein axially reciprocating the agitator assembly comprises rotating a rotary drive operably coupled to the agitator assembly.

41. The method of claim 40, wherein rotating the rotary drive comprises rotating the rotary drive a predetermined number of revolutions.

42. The method of claim 41, wherein the predetermined number of revolutions is equal to about 16 revolutions.

43. The method of claim 39, wherein ejecting the liquid composition comprises axially displacing a piston assembly extending within the drug delivery device.

44. The method of claim 43, wherein axially displacing the piston assembly causes axial displacement of a tubular member defining the mixing chamber relative to an axially fixed distal member of the drug delivery device.

45. The method of claim 44, wherein the axial displacement of the tubular member reduces a volume of the mixing chamber.

46. The method of claim 39, further comprising introducing at least one of the plurality of substances into the mixing chamber.

47. The method of claim 46, wherein introducing the at least one of the plurality of substances into the mixing chamber comprises actuating an air moving device that is fluidly connected to the mixing chamber.

48. The method of claim 39, further comprising combining first and second substances to form a third substance, and introducing the third substance into the mixing chamber.

49. A method for preparing bone cement, the method comprising:

providing a drug delivery system comprising a manifold and a delivery device configured for releasable attachment to the manifold;

reconstituting a bone morphogenetic protein powder to form a bone morphogenetic protein admixture in the manifold;

delivering the bone morphogenetic protein admixture from the manifold to the delivery device;

mixing the bone morphogenetic protein admixture with a calcium phosphate matrix contained within the delivery device to form a bone cement paste; and

ejecting the bone cement paste from the delivery device.

50. A drug delivery system comprising:

a manifold configured to contain a bone morphogenetic protein therein; and

a delivery device configured to contain a calcium phosphate matrix therein, and configured for releasable attachment to the manifold so that the bone morphogenetic protein can be delivered to the delivery device when the manifold contains the bone morphogenetic protein, the delivery device comprising

an agitator assembly configured to mix the calcium phosphate matrix and the bone morphogenetic protein when the delivery device contains the calcium phosphate matrix and the bone morphogenetic protein is delivered to the delivery device; and

an aperture defined in a distal end of the delivery device to allow contents to be ejected from the delivery device.