Fluid reservoir for use with an external infusion device

• US 20050197626A1
• Filed: 04/05/2005
• Published: 09/08/2005
• Est. Priority Date: 10/29/1998
• Status: Abandoned Application

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Moberg, Sheldon B., Hudak, Philip J., McConnell, Susan
• Application Number:
  US11/100,188
• Publication Number:
  US 20050197626A1
• Time in Patent Office: Days
• US Class Current: 604/131
• CPC Class Codes: A61M 39/12 for joining a flexible tube to a rigid attachment
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/162 Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube in jet-action syringes A61M5/30; connectors for tubes having sealed ends and a needle for piercing them A61M39/14

Abstract

A reservoir, made from a cyclic olefin copolymer (COC), for containing a fluid for infusion into a body of a patient includes a proximal end adapted to connect to an infusion set, a distal end, a cylindrical wall longitudinally extending from the proximal end to the distal end, and a piston adapted to be slidably mounted within the reservoir at the distal end. The COC may be Topas® and the reservoir may be used to contain insulin. The piston forms a fluid tight seal and may be connected to a linear actuation member. Additionally, the piston may be formed from an elastomeric material including rubber, silicone, bromobutyl, natural synthetic isoprene, nitrile, and/or ethylene propylene diene monomers. The piston may also be made from a COC such as Topas®.

Claims

1. A reservoir for containing a fluid for infusion into a body of a patient, the reservoir comprising:

a proximal end adapted to connect to an infusion set;

a distal end;

a cylindrical wall longitudinally extending from the proximal end to the distal end, and

a piston adapted to be slidably mounted within the reservoir at the distal end,

wherein the piston forms a fluid tight seal, and

wherein the reservoir is made from a cyclic olefin copolymer.

2. A reservoir according to claim 1, wherein the cyclic olefin copolymer is Topas®

.

3. A reservoir according to claim 1, wherein the reservoir contains insulin.

4. A reservoir according to claim 1, wherein the piston is coupled to a linear actuation member.

5. A reservoir according to claim 1, wherein the piston is formed from an elastomeric material.

6. A reservoir according to claim 5, wherein the elastomeric material is selected from the group consisting of rubber, silicone, bromobutyl, natural synthetic isoprene, nitrile, and ethylene propylene diene monomers.

7. A reservoir according to claim 1, wherein the piston is made from a cyclic olefin copolymer.

8. A reservoir according to claim 7, wherein the cyclic olefin copolymer is Topas®

.

9. A reservoir according to claim 1, further including a piston insert disposed within the piston.

10. A reservoir according to claim 9, wherein the piston insert is made from metal or plastic.

11. A reservoir according to claim 1, wherein the piston includes elastomeric O-rings.

12. A reservoir according to claim 11, wherein the elastomeric O-rings are made from rubber, silicone, bromobutyl, natural synthetic isoprene, nitrile, or ethylene propylene diene monomers.

13. A reservoir according to claim 1, further including a septum disposed in the proximal end and adapted to couple to the infusion set having a connector with a needle to pierce the septum.

14. A reservoir according to claim 1, wherein the reservoir is adapted to be placed inside an external infusion device.

15. A reservoir according to claim 14, wherein the external infusion device includes a drive system to operatively couple with the piston to infuse the fluid from the reservoir into the body;

electronic control circuitry coupled to the drive system to control infusion of the fluid into the body; and

a housing adapted for use on an exterior of the body, wherein the housing contains at least a portion of the reservoir, the piston, at least a portion of the electronic control circuitry, and the drive mechanism.

16. A reservoir according to claim 14, wherein the infused fluid is insulin.

17. A reservoir according to claim 14, wherein the reservoir is a pre-filled cartridge.

18. A reservoir according to claim 17, wherein the pre-filled cartridge is made from Topas®

.

19. A reservoir according to claim 1, wherein the reservoir is formed to yield a breakage rate in the range of 0%−

5% when subjected to a drop test from a height of 1 meter.

20. An external infusion device for infusing a fluid into a body of a patient, the external infusion device comprising:

a reservoir to contain the fluid;

a piston adapted to be slidably mounted within the reservoir;

a drive system to operatively couple with the piston to infuse the fluid from the reservoir into the body;

electronic control circuitry coupled to the drive system to control infusion of the fluid into the body; and

a housing adapted for use on an exterior of the body,

wherein the housing contains at least a portion of the reservoir, the piston, at least a portion of the electronic control circuitry, and the drive mechanism,

wherein the reservoir is made from a cyclic olefin copolymer, and

wherein the reservoir is adapted to connect to an infusion set.

21. An external infusion device according to claim 20, wherein the cyclic olefin copolymer is Topas®

.

22. An external infusion device according to claim 20, wherein the infused fluid is insulin.

23. An external infusion device according to claim 20, wherein the piston is coupled to a linear actuation member.

24. An external infusion device according to claim 20, wherein the reservoir is a pre-filled cartridge.

25. An external infusion device according to claim 24, wherein the pre-filled cartridge is made from Topas®

.

26. An external infusion device according to claim 20, wherein the reservoir is formed to yield a breakage rate in the range of 0%−

5% when subjected to a drop test from a height of 1 meter.

27. An external infusion device according to claim 20, wherein the piston is formed from an elastomeric material.

28. An external infusion device according to claim 27, wherein the elastomeric material is selected from the group consisting of rubber, silicone, bromobutyl, natural synthetic isoprene, nitrile, and ethylene propylene diene monomers.

29. An external infusion device according to claim 20, wherein the piston is made from a cyclic olefin copolymer.

30. An external infusion device according to claim 29, wherein the cyclic olefin copolymer is Topas®

.

31. An external infusion device according to claim 20, further including a piston insert disposed within the piston.

32. An external infusion device according to claim 31, wherein the piston insert is made from metal or plastic.

33. An external infusion device according to claim 20, wherein the piston includes elastomeric O-rings.

34. An external infusion device according to claim 33, wherein the elastomeric O-rings are made from rubber, silicone, bromobutyl, natural synthetic isoprene, nitrile, or ethylene propylene diene monomers.

35. An external infusion device according to claim 20, further including a septum disposed in the proximal end and adapted to couple to the infusion set having a connector with a needle to pierce the septum.

36. A reservoir for containing fluid for infusion into a body of a patient, the reservoir comprising:

a first end adapted to connect to an infusion set;

a second end; and

a piston adapted to be slidably mounted within the reservoir at the second end;

wherein the piston includes a piston insert,

wherein the reservoir is adapted to be placed in an external infusion device, and

wherein the reservoir is made from a cyclic olefin copolymer.

37. A reservoir according to claim 36, wherein the cyclic olefin copolymer is Topas®

.

38. A reservoir according to claim 36, wherein the reservoir contains insulin.

39. A reservoir according to claim 36, wherein the piston insert is coupled to a linear actuation member.

40. A reservoir according to claim 36, wherein the piston insert is made from metal or plastic.

41. A reservoir according to claim 36, wherein the piston is formed from an elastomeric material.

42. A reservoir according to claim 41, wherein the elastomeric material is selected from the group consisting of rubber, silicone, bromobutyl, natural synthetic isoprene, nitrile, and ethylene propylene diene monomers.

43. A reservoir according to claim 36, wherein the piston is made from a cyclic olefin copolymer.

44. A reservoir according to claim 43, wherein the cyclic olefin copolymer is Topas®

.

45. A reservoir according to claim 36, wherein the piston includes elastomeric O-rings.

46. A reservoir according to claim 45, wherein the elastomeric O-rings are made from rubber, silicone, bromobutyl, natural synthetic isoprene, nitrile, or ethylene propylene diene monomers.

47. A reservoir according to claim 36, further including a septum disposed in the first end and adapted to couple to the infusion set having a connector with a needle to pierce the septum.

48. A reservoir according to claim 36, wherein the reservoir is adapted to be placed inside an external infusion device.

49. A reservoir according to claim 48, wherein the external infusion device includes a drive system to operatively couple with the piston to infuse the fluid from the reservoir into the body;

electronic control circuitry coupled to the drive system to control infusion of the fluid into the body; and

a housing adapted for use on an exterior of the body, wherein the housing contains at least a portion of the reservoir, the piston, at least a portion of the electronic control circuitry, and the drive mechanism.

50. A reservoir according to claim 48, wherein the infused fluid is insulin.

51. A reservoir according to claim 48, wherein the reservoir is a pre-filled cartridge.

52. A reservoir according to claim 51, wherein the pre-filled cartridge is made from Topas®

.

53. A reservoir according to claim 36, wherein the reservoir is formed to yield a breakage rate in the range of 0%−

5% when subjected to a drop test from a height of 1 meter.