Method to deliver blood from a heart chamber to vessel

• US 20060155239A1
• Filed: 02/24/2006
• Published: 07/13/2006
• Est. Priority Date: 08/13/1996
• Status: Abandoned Application

• Current Assignee: WILK Patent Development Corporation
• Original Assignee: Percardia, Inc.
• Inventors: Giese, William L., Knudson, Mark B.
• Application Number:
  US11/360,669
• Publication Number:
  US 20060155239A1
• Time in Patent Office: Days
• US Class Current: 604/9
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12045 double occlusion, e.g. during anastomosis
• CPC Class Codes: A61B 17/12131 characterised by the type of occluding device
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61B 18/24 with a catheter A61B18/26, A61B18/28 take precedence
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00247 Making holes in the wall of the heart, e.g. laser Myocardial revascularization
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1135 End-to-side connections, e.g. T- or Y-connections Y-shaped blood vessel prostheses A61F2002/065
• CPC Class Codes: A61B 2017/12127 Double occlusion, e.g. for creating blood-free anastomosis site
• CPC Class Codes: A61B 2018/00392 Transmyocardial revascularisation
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2493 Transmyocardial revascularisation [TMR] devices
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/061 : provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/065 : Y-shaped blood vessels
• CPC Class Codes: A61F 2002/068 : Modifying the blood flow model, e.g. by diffuser or deflector
• CPC Class Codes: A61F 2002/821 : Ostial stents
• CPC Class Codes: A61F 2240/008 : Means for testing implantable prostheses
• CPC Class Codes: Y10S 623/903 : Blood vessel

Abstract

A method for revascularizing a coronary vessel with a conduit through the heart wall having a diameter transition in the myocardial leg, wherein blood flow is in the direction of transition from larger to smaller diameter. A method for revascularizing a coronary vessel using an implant with a myocardial leg having a maximum cross-sectional area proximate a first end, and inserting the first end through the myocardium into a heart chamber so that the implant directs blood flow into the coronary vessel. A transmyocardial implant with a myocardial leg including point of minimum diameter and a first end with a larger diameter, and a vessel leg in fluid communication with the myocardial leg.

Claims

1-17. -17. (canceled)

18. A method for increasing the flow of blood to a selected site in a patient'"'"'s arterial vascular system of the heart, the method comprising the steps of:

creating a channel for blood flow from an oxygenated blood source to the selected site in the arterial vascular system of the heart;

maintaining the channel in an open position for blood flow through diastolic and systolic cycles of the heart; and

regulating the blood flow in the channel to minimize blood flow from the coronary vascular system to the blood source during diastole.

19. The method of claim 18 wherein the creating step includes perforating and dilating the tissue surrounding the blood source to create the channel therein.

20. The method of claim 18 wherein the creating step includes removing tissue to form an aperture completely through the tissue surrounding the blood source to partially create the channel therein.

21. The method of claim 18 wherein the creating step includes exposing at least a portion of the patient'"'"'s heart for surgical access.

22. The method of claim 18 wherein the creating step includes advancing a delivery device to the tissue surrounding the blood source.

23. The method of claim 18 wherein the blood source is the left ventricle and the tissue surrounding the blood source is the myocardium.

24. The method of claim 18 wherein the method includes selecting a site in the arterial vascular system distal to an obstruction therein.

25. A method for performing a transmyocardial coronary revascularization procedure for the treatment of coronary atherosclerosis caused by an obstruction in the arterial vascular system, the method comprising the steps of:

creating a channel for blood flow from an oxygenated blood source to the arterial vascular system distal to the area of obstruction;

maintaining the channel in an open position for blood flow through the diastole and systole cycles of the heart; and

regulating the blood flow in the channel to minimize blood flow from the arterial vascular system to the blood source during the diastolic cycle of the-heart.

26. The method of claim 25 wherein the creating step includes perforating and dilating the tissue surrounding the blood source to create the channel therein.

27. The method of claim 25 wherein the creating step includes removing tissue to form an aperture completely through the tissue surrounding the blood source to partially create the channel therein.

28. The method of claim 25 wherein the creating step includes exposing at least a portion of the patient'"'"'s heart for surgical access.

29. The method of claim 25 wherein the creating step includes advancing a delivery device to the tissue surrounding the blood source.

30. The method of claim 25 wherein the blood source is the left ventricle and the tissue surrounding the blood source is the myocardium.

31. The method of claim 25 wherein the method includes selecting a site in the arterial vascular system distal to an obstruction therein.

32. A method for treating an obstruction in a patient'"'"'s cardiovascular system using a non-expandable conduit made of biocompatible material, the method comprising the steps of:

inserting the conduit completely through the myocardium of the patient'"'"'s heart with one end of the conduit extending into the left ventricle and the other end of the conduit extending into the arterial vascular system distal to the area of obstruction;

maintaining the conduit in an open position for blood flow through the diastolic and systolic cycles of the-heart;

regulating the blood flow in the channel to minimize blood flow from the arterial vascular system to the left ventricle during the diastolic cycle of the heart.

33. The method of claim 32 wherein the inserting step includes perforating and dilating the tissue surrounding the blood source to create the channel therein.

34. The method of claim 32 wherein the inserting step includes removing tissue to form an aperture completely through the tissue surrounding the blood source to partially create the channel therein.

35. The method of claim 32 wherein the inserting step includes exposing at least a portion of the patient'"'"'s heart for surgical access.

36. The method of claim 32 wherein the inserting step includes advancing a delivery device to the tissue surrounding the blood source.

37. The method of claim 32 wherein the blood source is the left ventricle and the tissue surrounding the blood source is the myocardium.

38. The method of claim 32 wherein the method includes selecting a site in the arterial vascular system distal to an obstruction therein.

39. A method for increasing the flow of blood to a selected site in a patient'"'"'s arterial vascular system, the method comprising the steps of:

inserting one end of a conduit into the left ventricle;

inserting the second end of the conduit into the arterial vascular system at the selected site;

maintaining the conduit in an open position for blood flow through the diastolic and systolic cycles of the heart;

regulating the blood flow in the conduit to minimize blood flow from the arterial vascular system to the left ventricle during the diastolic cycle of the heart.

40. The method of claim 39 wherein the method includes connecting the ends of the conduit together.

41. The method of claim 39 wherein the method includes:

accessing the patient'"'"'s myocardium; and

perforating the myocardium.

42. The method of claim 39 wherein the inserting step includes perforating and dilating the tissue surrounding the blood source to create the channel therein.

43. The method of claim 39 wherein the inserting step includes removing tissue to form an aperture completely through the tissue surrounding the blood source to partially create the channel therein.

44. The method of claim 39 wherein the inserting step includes exposing at least a portion of the patient'"'"'s heart for surgical access.

45. The method of claim 39 wherein the inserting step includes advancing a delivery device to the tissue surrounding the blood source.

46. The method of claim 39 wherein the blood source is the left ventricle and the tissue surrounding the blood source is the myocardium.

47. The method of claim 39 wherein the method includes selecting a site in the arterial vascular system distal to an obstruction therein.