Granted Patent B2

US 12,447,016 · App. 18/410,981 · Granted Oct 21, 2025

Inventors: Jill Mendelson (San Francisco, CA); Michele Silver (Blaine, MN); Michael Gloss (Minneapolis, MN); Timothy Groen (Rush City, MN); Paul Rothstein (Elk River, MN); Jeffrey Sandstrom (Scandia, MN); Phil Haarstad (Minneapolis, MN); Joel Racchini (Edina, MN); David Blaeser (Minneapolis, MN)

Assignee: MEDTRONIC VASCULAR, INC.

A61F2/2427A61F2/2436A61F2/2439A61F2/95A61F2/07A61F2/2418A61F2/243A61F2/9517A61F2/962A61F2230/0063

Abstract

Claims (29)

1. A delivery device for delivering a self-expanding prosthetic heart valve comprising:

an inner shaft forming a lumen;

a spindle positioned at a distal end of the inner shaft, wherein the spindle defines at least one hole open to the lumen and an exterior of the spindle;

at least one cord slidably disposed within the lumen, and each cord of the at least one cord extending through a corresponding hole of the at least one hole, wherein the at least one cord is configured to selectively cinch the self-expanding prosthetic heart valve from a normal, expanded condition to a collapsed condition; and

at least one self-expanding release pin comprising a proximal segment, a distal segment, and an intermediate segment positioned between the proximal segment and the distal segment, wherein the at least one self-expanding release pin comprises a normal, expanded condition wherein the intermediate segment extends radially outward relative to a central axis of the spindle from the proximal segment to the distal segment; and

a capsule configured to be distally extended relative to the spindle to collapse the at least one self-expanding release pin from the normal, expanded condition of the at least one self-expanding release pin to a collapsed condition of the at least one self-expanding release pin wherein a radial distance between the distal segment and the central axis is reduced.

2. The delivery device of claim 1 , wherein each cord of the at least one cord is releasably coupled to a distal segment of a corresponding self-expanding release pin of the at least one self-expanding release pin.

3. The delivery device of claim 1 , wherein the at least one cord comprises a first cord, a second cord, and a third cord, and the at least one self-expanding release pin comprises a first self-expanding release pin, a second self-expanding release pin, and a third self-expanding release pin.

4. The delivery device of claim 3 , wherein the distal segments of the corresponding first, second, and third self-expanding release pins are approximately equidistantly circumferentially spaced apart within 10% of a truly equidistant circumferential spacing in the normal, expanded condition of the first, second, and third self-expanding release pins.

5. The delivery device of claim 1 , wherein the proximal segment of the at least one self-expanding release pin is coupled to the inner shaft.

6. The delivery device of claim 5 , wherein the at least one self-expanding release pin is configured to be selectively longitudinally locked relative to the inner shaft.

7. The delivery device of claim 1 , wherein the at least one self-expanding release pin comprises a shape memory material.

8. The delivery device of claim 7 , wherein the shape memory material comprises Nitinol.

9. A method of collapsing a self-expanding prosthetic heart valve with the delivery device of claim 1 from a normal, expanded condition of the self-expanding prosthetic heart valve to a collapsed condition of the self-expanding prosthetic heart valve comprising:

proximally retracting the at least one cord to cinch the self-expanding prosthetic heart valve to collapse from the normal, expanded condition of the self-expanding prosthetic heart valve to the collapsed condition of the self-expanding prosthetic heart valve; and

distally extending the capsule relative to the spindle to collapse the at least one self-expanding release pin from the normal, expanded condition of the at least one self-expanding release pin to the collapsed condition of the at least one-self expanding release pin, wherein distally extending the capsule positions the self-expanding prosthetic heart valve within the capsule while the self-expanding prosthetic heart valve is in the collapsed condition.

10. The method of claim 9 , wherein the at least one self-expanding release pin comprises a first self-expanding release pin, a second self-expanding release pin, and a third self-expanding release pin and the at least one cord comprises a first cord, a second cord, and a third cord, wherein the first cord is releasably attached to the distal segment of the first self-expanding release pin, the second cord is releasably attached to the distal segment of the second self-expanding release pin, and the third cord is releasably attached to the distal segment of the third self-expanding release pin.

11. The method of claim 10 , wherein the distal segments of the corresponding first, second, and third self-expanding release pins are approximately equidistantly circumferentially spaced apart within 10% of a truly equidistant circumferential spacing in the normal, expanded condition of the first, second, and third self-expanding release pins to keep the self-expanding prosthetic heart valve substantially centered relative to the spindle in an at least partially expanded condition of the self-expanding prosthetic heart valve.

12. The method of claim 9 , wherein the at least one self-expanding release pin comprises a shape memory material.

13. The method of claim 12 , wherein the shape memory material comprises Nitinol.

14. The method of claim 9 , wherein the self-expanding prosthetic heart valve comprises a shape memory material.

15. The method of claim 14 , wherein the shape memory material comprises Nitinol.

16. A method of deploying a self-expanding prosthetic heart valve positioned within the capsule of the delivery device of claim 1 from a collapsed condition of the self-expanding prosthetic heart valve within the capsule to an at least partially expanded condition of the self-expanding prosthetic heart valve outside of the capsule comprising:

proximally retracting the capsule relative to the spindle to position the self-expanding prosthetic heart valve outside of the capsule while the self-expanding prosthetic heart valve is in the collapsed condition, and to expand the at least one self-expanding release pin from the collapsed condition of the at least one self-expanding release pin to the normal, expanded condition of the at least one self-expanding release pin; and

distally extending the at least one cord relative to the self-expanding heart valve to expand the self-expanding prosthetic heart valve from the collapsed condition of the self-expanding prosthetic heart valve to the at least partially expanded condition of the self-expanding prosthetic heart valve.

17. The method of claim 16 , further comprising proximally retracting the at least one self-expanding release pin relative to the self-expanding heart valve to release an attachment of the at least one cord to the distal segment of the at least one release pin, wherein the self-expanding heart valve is released from the delivery device.

18. The method of claim 16 , wherein the at least one self-expanding release pin comprises a first self-expanding release pin, a second self-expanding release pin, and a third self-expanding release pin and the at least one cord comprises a first cord, a second cord, and a third cord, wherein the first cord is releasably attached to the distal segment of the first self-expanding release pin, the second cord is releasably attached to the distal segment of the second self-expanding release pin, and the third cord is releasably attached to the distal segment of the third self-expanding release pin.

19. The method of claim 18 , wherein the distal segments of the corresponding first, second, and third self-expanding release pins are approximately equidistantly circumferentially spaced apart within 10% of a truly equidistant circumferential spacing in the normal, expanded condition of the first, second, and third self-expanding release pins to keep the self-expanding prosthetic heart valve substantially centered relative to the spindle in the at least partially expanded condition of the self-expanding prosthetic heart valve.

20. The method of claim 16 , wherein the at least one self-expanding release pin and/or the self-expanding prosthetic heart valve comprises a shape memory material.

Assignments (1)

Continuity (4)

References Cited (28)