Delivery devices for delivering a self-expanding prosthetic heart valve

Patent metadata

Field	Value
Publication number	US-12447016-B2
Application number	US-202418410981-A
Country	US
Kind code	B2
Filing date	Jan 11, 2024
Priority date	Jun 6, 2016
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

Delivery devices for delivering a self-expanding prosthetic heart valve are disclosed. The delivery device includes at least one cord is configured to selectively cinch the self-expanding prosthetic heart valve. The delivery device further includes 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. The at least one self-expanding release pin includes 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. The delivery device further includes 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.

First claim

What is claimed is:

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 spac

Assignees

• Medtronic Vascular Inc

Inventors

• Mendelson Jill
• Silver Michele
• Gloss Michael
• Groen Timothy
• Rothstein Paul
• Sandstrom Jeffrey
• Haarstad Phil
• Racchini Joel
• Blaeser David

Classifications

• A61F2230/0063

  Three-dimensional shapes · CPC title

• A61F2/962 Primary

  having an outer sleeve · CPC title

• A61F2/95

  Instruments specially adapted for placement or removal of stents or stent-grafts · CPC title

• A61F2/2436

  Deployment by retracting a sheath · CPC title

• A61F2/243

  Deployment by mechanical expansion · CPC title