Heart valve delivery system and method with rotational alignment
A delivery system for a transcatheter heart valve (THV) to a subject is provided, the delivery system includes a delivery catheter housing the THV therein; an elongated member for receiving the THV thereon and having an accessory extending from the distal portion thereof, the accessory comprising a plurality of components for alignment with commissures of the THV during delivery of the THV, and a rotational member connected to the elongated member to rotate the accessory and THV together to align with a native or bioprosthetic valve commissure or valve leaflet at a desired angle.
1. A delivery system for a transcatheter heart valve (THV) to a subject, the delivery system comprising:
a delivery catheter sized for housing the THV therein;
an elongated member for receiving the THV thereon and having an accessory extending from the distal portion thereof, the accessory comprising a plurality of radially outwardly extending projections disposed distally from the THV during delivery of the THV for alignment of the THV with respect to a native or bioprosthetic valve commissure or a valve leaflet at a desired angle during delivery of the THV, the elongated member and accessory independently rotatable with respect to the delivery catheter, wherein the projections are configured to be extended from the elongated member and retracted within the elongated member; and
a rotational member connected to the elongated member to rotate the accessory and THV together to align with a native or bioprosthetic valve commissure or a valve leaflet at a desired angle.
2. The delivery system of claim 1 , further comprising projections disposed at a proximal portion of the THV during delivery of the THV.
3. The delivery system of claim 2 , wherein the projections extend radially outwardly from the elongated member.
4. The delivery system of claim 1 , wherein the projections are atraumatic filamentous projections.
5. The delivery system of claim 1 , wherein the projections are loop-shaped projections.
6. The delivery system of claim 1 , wherein the projections comprise radiopaque components.
7. The delivery system of claim 1 , wherein each projection is capable of being moved independently.
8. The delivery system of claim 1 , wherein one or more of the projections is curled to conform to a contour of the native or bioprosthetic valve.
9. The delivery system of claim 1 , wherein the rotational member comprises a control member positioned on a proximal handle portion.
10. The delivery system of claim 9 , wherein the control member is a rotational wheel.
11. The delivery system of claim 9 , wherein the control member is a thumb slide.
12. The delivery system of claim 1 , wherein the delivery catheter, the elongated member and the THV are adapted for deployment to the aortic valve of the subject.
13. The delivery system of claim 1 , wherein the THV is adapted for placement at the mitral valve of the subject.
14. The delivery system of claim 1 , wherein the THV is adapted for placement at the tricuspid valve of the subject.
15. The delivery system of claim 1 , wherein the radially outwardly extending projections have elastic or shape memory characteristics.
16. The delivery system of claim 15 , further comprising a nose cone positioned distal of the accessory.
17. The delivery system of claim 16 , wherein the projections are capable of being compressed within the delivery catheter during delivery.
18. The delivery system of claim 17 , wherein the nose cone is capable of being advanced distally from the projections to allow the projections to extend from the compressed configuration to the radially outward configuration.
19. A method for delivery of a transcatheter heart valve (THV) to a subject comprising:
providing an elongated member for receiving the THV thereon and having an accessory extending from the distal portion thereof, the accessory comprising a plurality of radially outwardly extending projections disposed at a distal portion of the THV, the elongated member and accessory housed within and independently rotatable with respect to a delivery catheter wherein the projections are configured to be extended from the elongated member and retracted within the elongated member;
deploying the elongated member and THV from the delivery catheter at the native valve location;
rotating the accessory to align the THV with respect to a native or bioprosthetic valve commissure or a valve leaflet at a desired angle; and
expanding the THV in the valve location.
20. The method of claim 19 , further comprising a nose cone disposed at a distal end of the elongated member.
21. The method of claim 20 , further comprising, prior to deploying the elongated member, compressing the projections within the delivery catheter into a compressed configuration.
22. The method of claim 21 , further comprising, after compressing the projections, advancing the projections to expand to a radially outward configuration.
23. The method of claim 19 , wherein the valve location is the aortic valve.
24. The method of claim 19 , wherein the valve location is the mitral valve.
25. The method of claim 19 , wherein the valve location is the tricuspid valve.
26. The method of claim 19 , wherein rotating the accessory comprises rotating the accessory to align the radially outwardly extending projections with the native or bioprosthetic valve commissure.
27. The method of claim 19 , wherein rotating the accessory comprises rotating the accessory such that the radially outwardly extending projections straddle the native or bioprosthetic valve commissure.
28. The method of claim 19 , further comprising retracting the projections into the elongated member.
29. A delivery system for a transcatheter heart valve (THV) to a subject, the delivery system comprising:
a delivery catheter sized for housing the THV therein;
an elongated member for receiving the THV thereon and having an accessory extending from the distal portion thereof, the accessory comprising a plurality of radially outwardly extending projections configured and spaced to align with each leaflet or each commissure of the native or bioprosthetic valve and disposed distally from the THV during delivery of the THV for alignment of the THV with respect to a native or bioprosthetic valve commissure or a valve leaflet at a desired angle during delivery of the THV and wherein the radially outwardly extending projections are spaced apart from the valve implant, the elongated member and accessory independently rotatable with respect to the delivery catheter, and a rotational member connected to the elongated member to rotate the accessory and THV together to align with a native or bioprosthetic valve commissure or a valve leaflet at a desired angle.
30. The delivery system of claim 28 , wherein the valve delivery catheter and the accessory (including the projections) are independently rotatable.