Catheter system having a fluid circuit

• US 8,821,438 B2
• Filed: 04/30/2010
• Issued: 09/02/2014
• Est. Priority Date: 04/30/2010
• Status: Expired due to Fees

• Current Assignee: Abbott Cardiovascular Systems Incorporated (Abbott Laboratories)
• Original Assignee: Abbott Cardiovascular Systems Incorporated (Abbott Laboratories)
• Inventors: Ehrenreich, Kevin J., Magana, Jesus
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): Snyder, Melissa A
• Application Number:
  US12/771,968
• Publication Number:
  US 20110270175A1
• Time in Patent Office: 1,586 Days
• Field of Search: 604/99.02, 604/100.01, 604/100.03, 604/104
• US Class Current: 604/99.01
• CPC Class Codes: A61M 2025/004 characterized by lumina being arranged circumferentially
• CPC Class Codes: A61M 2025/0059 having means for preventing the catheter, sheath or lumens from collapsing due to outer forces, e.g. compressing forces, or caused by twisting or kinking
• CPC Class Codes: A61M 25/1002 characterised by balloon shape A61M25/1006, A61M25/1009 take precedence
• CPC Class Codes: A61M 25/10186 One-way valves
• CPC Class Codes: A61M 25/10187 Indicators for the level of inflation or deflation
• CPC Class Codes: A61M 39/105 Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes multi-channel connectors in general F16L37/56
• CPC Class Codes: A61M 39/22 Valves or arrangement of valves A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405

Abstract

A catheter having a fluid circuit to control and modulate flow of inflation fluid to and from a balloon.

Claims

1. A system for reducing or preventing reperfusion injury to a patient, the system comprising:

a catheter including an elongate shaft having a proximal end, a distal end and a length therebetween, the elongate shaft including an inflation lumen and a guidewire lumen,

an expandable member disposed at or near the distal end of the elongate shaft, and

a handle disposed at or near the proximal end of the elongate shaft, the handle including at least part of a fluid circuit adapted to modulate inflation fluid flow in one direction to inflate and deflate the expandable member.

2. The system of claim 1, wherein the handle is non-removably attached to the elongate shaft.

3. The system of claim 2, wherein the system is disposable.

4. The system of claim 1, wherein the handle includes an actuator to effect inflation or deflation of the expandable member.

5. The system of claim 4, wherein the actuator has a first position to actuate inflation fluid flow to the expandable member.

6. The system of claim 4, wherein the actuator has a second position to actuates inflation fluid flow to the expandable member.

7. The system of claim 5, wherein the first position includes a momentary direction.

8. The system of claim 6, wherein the second position includes a detentable direction.

9. The system of claim 1, wherein the system contains no more than one actuator to inflate and deflate the expandable member.

10. The system of claim 9, wherein the actuator is a switch, a button, or a lever.

11. The system of claim 10, wherein the switch, button, or lever is configured to prevent overinflation of the expandable member.

12. The system of claim 1, wherein the handle includes a safety member to prevent inflation fluid flow.

13. The system of claim 1, wherein the fluid circuit provides a closed loop circuit.

14. The system of claim 1, wherein the fluid circuit includes a first reservoir and a second reservoir in fluid communication with a two-way splitter.

15. The system of claim 14, wherein the first reservoir contains inflation fluid.

16. The system of claim 15, wherein the fluid circuit includes a piercing member to pierce the first reservoir.

17. The system of claim 16, wherein the actuator actuates the piercing member to pierce the first reservoir to release the inflation fluid.

18. The system of claim 17, wherein the piercing member includes lancing device.

19. The system of claim 17, wherein the piercing member controllably taps the first reservoir.

20. The system of claim 17, wherein the fluid circuit includes a regulator to control pressure from the inflation fluid to the actuator.

21. The system of claim 20, wherein the regulator is a valve.

22. The system of claim 1, wherein the actuator controls inflation fluid flow from the handle to an inflation lumen.

23. The system of claim 22, wherein the actuator controls inflation flow through the inflation lumen to the expandable member.

24. The system of claim 22, wherein the fluid circuit includes a splitter adapted to send the inflation fluid to the inflation lumen of the catheter.

25. The system of claim 24, wherein the system includes a second splitter having a pulse valve, wherein the pulse valve effectuates a time controlled flow of inflation fluid to the inflation lumen.

26. The system of claim 25, wherein the fluid circuit includes a check valve to direct flow of inflation fluid from the pulse valve to the inflation lumen.

27. The system of claim 26, wherein the fluid circuit further includes a connector valve to connect a deflation lumen tube from the expandable member to the check valve.

28. The system of claim 27, wherein the fluid circuit includes an indicator to provide information about inflation or deflation of the expandable member.

29. The system of claim 28, wherein the indicator is an air indicator.

30. The system of claim 29, wherein the air indicator is disposed at the deflation lumen.

31. The system of claim 30, wherein the air indicator indicates an existence of inflation fluid pressure in the deflation lumen.

32. The system of claim 31, wherein the existence of inflation fluid pressure in the deflation lumen signifies inflation of the expandable member.

33. The system of claim 1, wherein the expandable member is a balloon, and further wherein the balloon is sequentially inflatable and deflatable.

34. A catheter comprising:

a fluid circuit including an inflation tube, a deflation tube, and a plurality of valves to modulate flow of inflation fluid in one direction to and from a balloon disposed on the catheter, and

a pressure marker configured to indicate whether the balloon is in an inflated or deflated state.

35. The catheter of claim 34, wherein the pressure marker is associated with the deflation lumen.

36. The catheter of claim 35, wherein the pressure marker is associated with the deflation lumen at a proximal section of the catheter.

37. The catheter of claim 35, wherein the pressure marker is an air indicator.

38. The catheter of claim 34, wherein the fluid circuit further includes a control system.

39. The catheter of claim 38, wherein the control system is disposed in a handle attached to the proximal end of the catheter.

40. The catheter of claim 39, wherein the control system includes a reservoir to house inflation fluid, an actuator, and a plurality of valves to control flow of inflation fluid to and from the balloon.

41. The catheter of claim 34, wherein the fluid circuit is configured to inhibit overinflation of the balloon.

42. The catheter of claim 41, wherein the fluid circuit includes a pulse valve to inhibit overinflation of the balloon.

43. The catheter of claim 34, wherein the inflation fluid is carbon dioxide.