Methods for transluminal delivery of prosthetic valves
A prosthetic valve assembly for use in replacing a deficient native valve comprises a replacement valve supported on an expandable valve support. The valve support, which entirely supports the valve annulus, valve leaflets, and valve commissure points, is configured to be collapsible for transluminal delivery and expandable contact the anatomical annulus of the native valve when the assembly is properly positioned. Portions of the valve support may expand to a preset diameter to maintain coaptivity of the replacement valve and to prevent occlusion of the coronary ostia.
1. A method for implanting a prosthetic cardiac valve comprising:
inserting a prosthetic cardiac valve into a body lumen, the prosthetic cardiac valve comprising:
a replacement valve comprising:
a plurality of leaflets configured to permit blood to selectively flow therethrough; and
a plurality of commissure points from which the replacement valve is suspended; and
a valve support connected to the replacement valve and configured to be collapsible for transluminal delivery, comprising:
a first section terminating in a first end, the first end comprising an outer circumference having a first diameter, the first section configured to engage a native valve annulus; and
a second section terminating in a second end, the second end comprising an outer circumference having a second diameter, the second section configured to extend past the coronary ostia and into the ascending aorta,
wherein the second circumference is greater than the first circumference,
and wherein the valve support has an axial length sufficient to extend, when implanted, from the native valve annulus, past the replacement valve, past the commissure points, past a patient's coronary ostia, and into an ascending aorta;
positioning the prosthetic cardiac valve such that the valve support extends from the native annulus past the coronary ostia and into the ascending aorta; and
deploying the prosthetic cardiac valve.
2. The method of claim 1 , further comprising loading the prosthetic cardiac valve onto a delivery system.
3. The method of claim 2 , further comprising covering the prosthetic cardiac valve with a sheath.
4. The method of claim 3 , wherein deploying the prosthetic cardiac valve comprises withdrawing the sheath.
5. The method of claim 2 , further comprising advancing the delivery system through the body lumen to an implantation location within the patient's heart.
6. The method of claim 1 , wherein the valve support comprises a plurality of wires.
7. The method of claim 1 , wherein the valve support comprises a shape memory material.
8. The method of claim 1 , wherein the valve support is self-expanding.
9. The method of claim 1 , wherein deploying the prosthetic cardiac valve comprises expanding the prosthetic cardiac valve to a preset diameter to prevent occlusion of the coronary ostia.
10. A method for implanting a prosthetic cardiac valve comprising:
inserting a prosthetic cardiac valve into a body lumen, the prosthetic cardiac valve comprising:
a collapsible valve support; and
a plurality of leaflets connected to an interior of the valve support,
wherein the valve support has an axial length greater than a length from a patient's native valve annulus to the patient's coronary ostia;
positioning the prosthetic cardiac valve such that the valve support extends from the native annulus past the coronary ostia and into the patient's ascending aorta; and
deploying the prosthetic cardiac valve.
11. The method of claim 10 , wherein deploying the prosthetic cardiac valve comprises expanding the prosthetic cardiac valve to a preset diameter to prevent occlusion of the coronary ostia.
12. The method of claim 10 , further comprising:
loading the prosthetic cardiac valve onto a delivery system;
covering the prosthetic cardiac valve with a sheath; and
advancing the delivery system through the body lumen to an implantation location within the patient's heart.
13. The method of claim 12 , wherein deploying the prosthetic cardiac valve further comprises withdrawing the sheath.
14. The method of claim 10 , wherein the valve support comprises a plurality of wires.
15. The method of claim 10 , wherein the valve support comprises a shape memory material.
16. The method of claim 10 , wherein the valve support is self-expanding.
17. The method of claim 10 , wherein the prosthetic cardiac valve comprises a first portion having a first cross-sectional area and a second portion having a second cross-sectional area, and wherein the second cross-sectional area is greater than the first cross-sectional area.
18. A method for replacing a native cardiac valve comprising:
loading a prosthetic cardiac valve onto a delivery system, the prosthetic cardiac valve comprising:
a collapsible valve support; and
a plurality of leaflets connected to an interior of the valve support,
wherein the valve support has an axial length greater than a length from a patient's native valve annulus to the patient's coronary ostia;
covering the prosthetic cardiac valve with a sheath;
inserting the delivery system into a body lumen;
advancing the delivery system through the body lumen to an implantation location within the patient's heart;
positioning the prosthetic cardiac valve such that the valve support extends from the native annulus past the coronary ostia and into the patient's ascending aorta;
deploying the prosthetic cardiac valve; and
removing the delivery system from the body lumen.
19. The method of claim 18 , wherein the deploying the prosthetic cardiac valve comprises expanding the prosthetic cardiac valve to a preset diameter to prevent occlusion of the coronary ostia.
20. The method of claim 18 , wherein the valve support is self-expanding.