Valve designs for left ventricular conduits

• US 6,641,610 B2
• Filed: 08/04/1999
• Issued: 11/04/2003
• Est. Priority Date: 09/10/1998
• Status: Expired due to Fees

• Current Assignee: Horizon Technology Funding Co. LLC (Horizon Technology Finance Management LLC)
• Original Assignee: Percardia, Inc.
• Inventors: Santamore, William, Briefs, Nancy C., Wilk, Peter J., Burkhoff, Daniel, Hall, Todd A., Wolf, Scott J., Phelps, David Y., Furnish, Greg R.
• Primary Examiner(s): Isabella, David J.
• Application Number:
  US09/368,393
• Publication Number:
  US 20020165606A1
• Time in Patent Office: 1,553 Days
• Field of Search: 623/2.35, 623/1.11, 623/1.12, 623/1.36, 623/1.42, 623/1.43, 623/1.44, 623/1.46, 128/898, 600/16, 600/17, 600/18, 606/153, 606/191, 606/192, 606/194, 606/198, 606/151, 606/152, 604/8, 604/9
• US Class Current: 623/1.3
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/2493 Transmyocardial revascularisation [TMR] devices
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2/94 Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61M 39/24 Check- or non-return valves

Abstract

Disclosed is a conduit that provides a bypass around a stenosis or occlusion in a coronary artery. The conduit is adapted to be positioned in the myocardium to provide a passage for blood to flow from a heart chamber to a coronary artery, at a site distal to the blockage or stenosis in the coronary artery. The conduit has a one-way valve positioned therein to prevent the backflow of blood from the coronary artery into the heart chamber.

Claims

1. A device for treating a heart, the device comprising:

at least one hollow implant defining a lumen, the at least one hollow implant being configured to be positioned in a heart wall between a heart chamber and a coronary vessel,

wherein, when the at least one hollow implant is positioned in the heart wall, the lumen at least partially defines a blood flow passage between the heart chamber and the coronary vessel, and

wherein the passage is at least partially closable in response to movement of cardiac tissue during diastole so as to at least partially obstruct blood flow therethrough.

2. The device of claim 1, wherein the lumen is configured so that, when the at least one hollow implant is positioned in the heart wall, the lumen is open to permit blood flow through the passage during systole.

3. The device of claim 1, wherein the at least one hollow implant includes a hollow tube.

4. The device of claim 1, wherein the at least one hollow implant includes a conduit.

5. The device of claim 1, wherein the at least one hollow implant includes a stent.

6. The device of claim 1, wherein the at least one hollow implant includes two hollow implants.

7. The device of claim 6, wherein the hollow implants are configured to be separated from each other when the hollow implants are positioned in the heart wall.

8. The device of claim 6, wherein a length of each hollow implant is less than a thickness of the heart wall.

9. The device of claim 1, wherein the at least one hollow implant is configured to be positioned in the heart wall between a left ventricle and a blood vessel.

10. The device of claim 1, wherein the at least one hollow implant is configured to be positioned in the heart wall between the heart chamber and a coronary artery.

11. The device of claim 1, wherein the at least one hollow implant is configured to be positioned in the heart wall between a left ventricle and a coronary artery.

12. The device of claim 11, wherein the passage is configured to permit blood to flow from the left ventricle to the coronary artery when blood flow through the passage is not partially obstructed.

13. The device of claim 1, wherein the passage is closable such that blood flow through the passage is fully obstructed in response to movement of the cardiac tissue during diastole.

14. The device of claim 1, wherein the cardiac tissue includes the heart wall.

31. The device of claim 1, wherein the cardiac tissue is myocardial tissue.

15. A device for treating a heart, the device comprising:

at least one hollow implant defining a lumen, the at least one implant being configured to be positioned in a heart wall between a heart chamber and a coronary vessel,

wherein, when the at least one hollow implant is positioned in the heart wall, the lumen at least partially defines a blood flow passage between the heart chamber and the coronary vessel, and

wherein the passage is at least partially closable by cardiac tissue entering the passage so as to at least partially obstruct blood flow therethrough during at least a portion of a cardiac cycle.

16. The device of claim 15, wherein the lumen is configured so that, when the at least one hollow implant is positioned in the heart wall, the lumen is open to permit blood flow through the passage during systole.

17. The device of claim 15, wherein the at least one hollow implant includes a hollow tube.

18. The device of claim 15, wherein the at least one hollow implant includes a conduit.

19. The device of claim 15, wherein the at least one hollow implant includes a stent.

20. The device of claim 15, wherein the at least one hollow implant includes two hollow implants.

21. The device of claim 20, wherein the hollow implants are configured to be separated from each other when the hollow implants are positioned in the heart wall.

22. The device of claim 21, wherein a length of each hollow implant is less than a thickness of the heart wall.

23. The device of claim 15, wherein the at least one hollow implant is configured to be positioned in the heart wall between a left ventricle and a blood vessel.

24. The device of claim 15, wherein the at least one hollow implant is configured to be positioned in the heart wall between the heart chamber and a coronary artery.

25. The device of claim 15, wherein the at least one hollow implant is configured to be positioned in the heart wall between a left ventricle and a coronary artery.

26. The device of claim 25, wherein the passage is configured to permit blood to flow from the left ventricle to the coronary artery when blood flow through the passage is not partially obstructed.

27. The device of claim 15, wherein, when the at least one hollow implant is positioned in the heart wall, the passage is closable by the cardiac tissue so as to fully obstruct the blood flow therethrough during at least a portion of the cardiac cycle.

28. The device of claim 15, wherein the cardiac tissue includes the heart wall.

29. The device of claim 28, wherein, when the at least one hollow implant is positioned in the heart wall, the passage is at least partially closable by portions of the heart wall coming together so as to at least partially obstruct blood flow therethrough during at least a portion of the cardiac cycle.

30. The device of claim 15, wherein, when the at least one hollow implant is positioned in the heart wall, the passage is at least partially closable by the cardiac tissue so as to at least partially obstruct blood flow therethrough during diastole.

32. The device of claim 15, wherein the cardiac tissue is myocardial tissue.