Methods and apparatus for off pump aortic valve replacement with a valve prosthesis

• US 20050203549A1
• Filed: 03/09/2005
• Published: 09/15/2005
• Est. Priority Date: 03/09/2004
• Status: Abandoned Application

• Current Assignee: Fidel Realyvasquez
• Original Assignee: Fidel Realyvasquez
• Inventors: Realyvasquez, Fidel
• Application Number:
  US11/077,192
• Publication Number:
  US 20050203549A1
• Time in Patent Office: Days
• US Class Current: 606/142
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61B 2017/00783 Valvuloplasty
• CPC Class Codes: A61B 2017/00862 elastic or resilient for sutures A61B2017/0618
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/00969 used for transplantation
• CPC Class Codes: A61B 2017/0649 Coils or spirals
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1157 applying the staples radially
• CPC Class Codes: A61B 2017/22097 Valve removal in veins
• CPC Class Codes: A61B 2017/320064 with tissue or sample retaining means
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation

Abstract

Methods and apparatus are provided for valve repair or replacement. In one embodiment, the method comprises providing an apparatus having a valve prosthesis, a valve leaflet support and a valve excisor, the apparatus having a first configuration and a second configuration; accessing the aortic root without placing the patient on a heart-lung machine; advancing the apparatus in the first configuration where the valve leaflet support is advanced through a valve, wherein the support is positioned below a valve annulus; expanding the apparatus into a second configuration so that the support will engage the valve; and moving the valve leaflet support and valve excisor together to remove leaflets of the valve. Penetrating members may be advanced into the tissue wherein the penetrating members may act as fasteners to hold the prosthesis in place.

Claims

1. A method of valve replacement, the method comprising:

providing a valve excisor;

providing an apparatus having a valve prosthesis and a valve leaflet support, said apparatus having a first configuration and a second configuration;

accessing the aortic root without placing the patient on a heart-lung machine;

advancing the apparatus in the first configuration where the valve leaflet support is advanced through a valve, wherein the support is positioned below a valve annulus;

expanding said apparatus into a second configuration so that said support will engage said valve;

moving said valve leaflet support and valve excisor together to remove leaflets of the valve;

advancing penetrating members on said apparatus into valve tissue, said penetrating members being secured in said valve tissue and a valve prosthesis, and act as fasteners to hold said valve prosthesis in position.

2. The method of claim 1 wherein accessing the aortic root without placing the patient on a heart-lung machine further comprises attaching a graft to the aorta.

3. The method of claim 1 wherein accessing the aortic root without placing the patient on a heart-lung machine further comprises:

attaching a first graft to the aorta;

clamping said first graft;

attaching a second graft to the first graft, wherein the second graft includes a hemostatic cap on a proximal end to prevent excessive blood loss and said apparatus contained in the second graft, said apparatus movable out of said graft and into the aorta.

4. The method of claim 2 wherein said graft is compressed in an accordian-like fashion when the apparatus is advanced.

5. The method of claim 1 wherein said apparatus further comprises using a ratchet to move the valve support to engage it against said valve leaflets.

6. The method of claim 3 wherein said apparatus further comprises using a ratchet to move the valve support to engage it against said valve leaflets, said ratchet extending outward from the hemostatic cap.

7. The method of claim 1 further comprising injecting the patient with medication to cause temporary asystole.

8. The method of claim 1 further comprising injecting the patient with adenosine phosphate.

9. The method of claim 1 further comprising using a pericardial tent on said apparatus to shield leaflets on the valve prosthesis from being damaged by the cutting element.

10. The method of claim 1 wherein the valve excisor is turned with simultaneous proximal counter traction to remove the valve leaflets.

11. The method of claim 1 wherein the valve leaflets are captured between the pericardial tent and the cutting element.

12. The method of claim 1 wherein the apparatus is delivered minimally invasively.

13. The method of claim 1 wherein attaching comprises delivering a shape memory clip that holds the valve prosthesis to the tissue.

14. A valve delivery device comprising:

a heart valve prosthesis support having a proximal portion and a distal portion;

a plurality of fasteners ejectably mounted on the support;

a heart valve prosthesis being releasably coupled to said distal portion of said heart valve prosthesis support;

said heart valve prosthesis and support being configured for delivery to the heart through an aortotomy formed in the patient'"'"'s aorta;

a valve excisor; and

an anvil movable along a longitudinal axis of the device to engage tissue disposed between the anvil and the valve prosthesis.

15. The device of claim 14 further comprising a pericardial tent positioned to capture valve leaflets between the tent and the valve excisor.

16. A valve delivery device comprising:

a heart valve prosthesis support having a proximal portion and a distal portion;

a plurality of fasteners ejectably mounted on the support;

a heart valve prosthesis being releasably coupled to said distal portion of said heart valve prosthesis support;

said heart valve prosthesis and support being configured for delivery to the heart through an aortotomy formed in the patient'"'"'s aorta;

a valve cutting element;

a pericardial tent positioned to capture valve leaflets between the tent and the valve cutting element; and

a leaflet support movable along a longitudinal axis of the device to engage tissue disposed between the support and the valve prosthesis.

17. An end-to-side access device comprising:

a first portion of a tissue clamp;

a second portion of the tissue clamp, said second portion having a collapsed configuration and an expanded configuration;

a tissue cutter;

a hollow shaft;

wherein the second portion may be delivered through said hollow shaft into the vessel to engage an inner surface of the wall of the vessel while the first portion engages an outer surface of the wall;

wherein the tissue cutter is configured to cut the tissue engaged by the tissue clamp, said first portion and second portion slidable to remove tissue engaged between the tissue clamp from the vessel.

18. The device of claim 17 further comprising a graft housing said tissue cutter and tissue clamp.

19. The device of claim 18 further comprising a ring of fasteners used to secure the graft to the tissue.

20. The device of claim 18 further comprising a hemostatic cap on the graft.

21. A device for use with a heart surgery device in an off-pump heart procedure, the device comprising:

a blood containment device wherein one portion of the device is configured to be attached to a blood vessel while blood is flowing in the vessel;

a hemostatic cap located on another portion of the blood containment device, wherein the hemostatic cap allows a portion of the heart device to extend through the hemostatic cap without creating a leak; and

a vent allowing for air to be removed from the containment device.

22. The device of claim 21 wherein the blood containment device is sized to house at least a portion of a valve prosthesis delivery device therein.

23. The device of claim 21 further comprising a release device that allows the portion of the device with the hemostatic cap to be removed from the portion of the containment device attached to the blood vessel.

24. The device of claim 21 wherein the blood containment device is a graft.

25. The device of claim 21 wherein the blood containment device is a graft made of a pliable, flexible material that can be clamped to created a fluid seal.

26. The device of claim 21 wherein the blood containment device is attached to the blood vessel without substantial blood leakage and without creating a life-threatening loss of blood.

27. The device of claim 21 wherein the blood containment device houses a portion of a multi-fire valve prosthesis delivery device.

28. The device of claim 21 wherein the blood containment device has a diameter of less then 30 mm.

29. The device of claim 21 wherein the blood containment device has a diameter of less then 20 mm.

30. The device of claim 21 wherein the blood containment device has a diameter of less then 10 mm.

31. The device of claim 21 wherein the blood containment device is sized to fit inside a four inch incision into the sternum.

32. A method of valve replacement, the method comprising:

providing a valve prosthesis delivery apparatus;

attaching a blood containment device to the aorta to prevent substantial loss of blood when the aorta is cut to provide access to an interior of the heart;

cutting the aorta to access the aortic root without placing the patient on a heart-lung machine;

advancing the apparatus to the area of the diseased valve;

delivering the valve to the target site;

retracing the valve prosthesis delivery apparatus into the blood containment device; and

sealing off a portion of the containment device to allow the delivery device contained therein to be removed without significant blood loss.

33. The method of claim 32 wherein the blood containment device is sized to house at least a portion of a valve prosthesis delivery device therein.

34. The method of claim 32 further comprising an release device that allows a portion of the device with a hemostatic cap to be removed from the portion of the containment device attached to the aorta.

35. The method of claim 32 wherein the blood containment device is a graft.

36. The method of claim 32 wherein the blood containment device is a graft made of a pliable, flexible material that can be clamped to created a fluid seal.

37. The method of claim 32 wherein the blood containment device is attached to the blood vessel without substantial blood leakage and without creating a life-threatening loss of blood.

38. The method of claim 32 wherein the blood containment device houses a portion of a multi-fire valve prosthesis delivery device.