Methods for anchoring a heart valve prosthesis in a transcatheter valve implantation procedure
Methods of deploying and securing a heart valve prosthesis are disclosed. A heart valve prosthesis ( 100 ) having a plurality of anchor guides ( 212 ) is loaded within a catheter-based delivery device, wherein each of the anchor guides is releasably engaged by a respective elongate member ( 338 ) and wherein tensioning of the elongate members aids in collapsing the prosthesis during loading. The delivery device is advanced via a transcatheter procedure to position the heart valve prosthesis at an implantation site. The heart valve prosthesis undergoes controlled deployment by controlling the release of tension on the elongate members. After deployment of the heart valve prosthesis, an anchor tool ( 660 ) is advanced along a guide member to the anchor guide positioned at a securement site. When the securement site is reached, an anchor clip ( 662 ) is released from the anchor tool to secure the prosthesis to the heart.
1. A method of securing a heart valve prosthesis to a heart of a patient comprising:
implanting a heart valve prosthesis having an anchor guide within one of a native heart valve or a previously implanted heart valve prosthesis, the anchor guide being fixed at each of a first end and a second end to the heart valve prosthesis, the anchor guide having an elongate guide member releasably secured thereto with an end or ends of the elongate guide member extending externally of the patient;
advancing an anchor tool having an anchor clip loaded therein along the elongate guide member to the anchor guide of the heart valve: prosthesis;
positioning the anchor tool at a securement site on the heart valve prosthesis; and
releasing the anchor clip from the anchor tool at the securement site to secure the heart valve prosthesis to the heart.
2. The method of claim 1 , wherein the anchor guide is a rail with the first and second ends thereof being attached to one or both of a frame and a graft material of the heart valve prosthesis.
3. The method of claim 2 , wherein the rail extends parallel to a strut of the frame with the first end positioned adjacent to a crown of the frame and the second end positioned along the strut.
4. The method of claim 3 , wherein the step of positioning the anchor tool includes sliding the elongate guide member along the rail to position the anchor tool at the securement site.
5. The method of claim 2 , wherein the rail is formed from a metallic material with the first end attached adjacent to a crown of the frame and the second end attached along a strut.
6. The method of claim 2 , w herein the rail is formed from a biocompatible fabric that forms a belt-type loop with the first end of the belt-type loop attached adjacent to a crown of the frame and the second end attached to at least a graft material that covers a strut.
7. The method of claim 1 further comprising:
removing the anchor tool and the elongate guide member after the step of releasing the anchor clip.
8. The method of claim 1 , wherein the anchor guide is an eyelet disposed on a frame of the heart valve prosthesis that is attached to a strut of the frame at a spaced location from a crown of the frame.
9. A method of deploying and securing a heart valve prosthesis to a heart of a patient comprising:
loading a heart valve prosthesis having a plurality of anchor guides within a heart valve delivery device, wherein each of the plurality of anchor guides is releasably engaged by a respective elongate member of a plurality of elongate members and wherein tensioning of the plurality of elongate members aids in collapsing the heart valve prosthesis during loading;
advancing the heart valve delivery device to position the heart valve prosthesis at an implantation site within one of a native heart valve or a previously implanted heart valve prosthesis;
deploying the heart valve prosthesis at the implantation site to include controlling the release of tension on the plurality of elongate members to provide for a controlled release of the heart valve prosthesis during deployment;
advancing an anchor tool having an anchor clip loaded therein along at least one elongate guide member to the anchor guide associated therewith;
positioning the anchor tool at a securement site on the heart valve prosthesis; and
releasing the anchor clip from the anchor tool at the securement site to secure the heart valve prosthesis to the heart.
10. The method of claim 9 , wherein the anchor guide is a rail attached to one or both of a frame and a graft material of the heart valve prosthesis.
11. The method of claim 10 , wherein the rail extends parallel to a strut of the frame with a first end disposed adjacent to a crown of the frame and a second end disposed along the strut.
12. The method of claim 11 , wherein during at least the loading step and the deploying step the at least one elongate member is disposed at the first end of the rail adjacent to the crown of the frame.
13. The method of claim 12 , wherein the step of positioning includes sliding the elongate guide member away from the first end of the rail to position the anchor tool at the securement site.
14. The method of claim 11 , wherein the rail is formed from a metallic material with the first end attached adjacent to the crown of the frame and the second end attached along the strut.
15. The method of claim 11 , wherein the rail is formed from a biocompatible fabric that forms a belt-type loop with the first end of the belt-type loop attached adjacent to the crown of the frame and the second end attached to at least a graft material that covers the strut.
16. The method of claim 9 further comprising:
removing the anchor tool and the at least one elongate guide member after the step of releasing the anchor.
17. The method of claim 9 , wherein the anchor guide is an eyelet disposed on a frame of the heart valve prosthesis that is attached to a strut of the frame at a spaced location from a crown of the frame.
18. The method of claim 17 , wherein during at least the loading step and the deploying step the at least one elongate member is also disposed through the crown of the frame.
19. The method of claim 9 further comprising:
imaging a location of the heart valve prosthesis to ascertain a position of the heart valve prosthesis at the implantation site prior to releasing all tension from the elongate members during the step of deploying.
20. The method of claim 19 further comprising:
adjusting or maintaining tension on the plurality of elongate members to permit recapture or repositioning of the heart valve prosthesis when the step of imaging shows the heart valve prosthesis to be improperly positioned at the implantation site.