Devices and methods for transcatheter valve loading and implantation

• US 10,441,420 B2
• Filed: 12/13/2016
• Issued: 10/15/2019
• Est. Priority Date: 12/14/2015
• Status: Active Grant

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Barajas-Torres, Martha, Mauch, Kevin, Sandstrom, Jeffrey, Mendelson, Jill, Tran, Don
• Primary Examiner(s): Hollm, Jonathan A
• Application Number:
  US15/376,739
• Publication Number:
  US 20170165067A1
• Time in Patent Office: 1,036 Days
• CPC Class Codes: A61F 2/2415 Manufacturing methods
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires

Abstract

The present disclosure relates to numerous devices and methods for transcatheter stented prosthetic heart valve loading and delivery. Such devices and methods reduce suture tangling and also provide the ability to adjust the stented prosthetic heart valve expansion and contraction prior to the final release of the stented prosthetic heart valve from the delivery device.

Claims

1. A method of adjusting the expansion and contraction of a prosthetic heart valve prior to deployment, the method comprising the steps of:

providing a prosthetic heart valve;

providing a suture positioned around the prosthetic heart valve, the suture having a first end and a second end;

providing a catheter having a lumen and a slot transversely positioned with respect to the lumen;

providing a release pin within the lumen, the first end of the suture connected to the release pin;

providing a wire within the lumen, the second end of the suture connected to the wire;

loading the prosthetic heart valve onto the wire and release pin to form a sub assembly and then inserting the sub assembly through the slot and into the lumen; and

pulling the wire to place tension in the suture to correspondingly compress the prosthetic heart valve.

2. The method of claim 1, wherein the step of providing a suture comprises providing a plurality of sutures each having first and second ends, wherein the first end of each suture is connected to the release pin and the second end of each suture is connected to the wire.

3. The method of claim 2, further comprising the step of providing two position stabilizers positioned on the wire for each of the plurality of sutures;

wherein the position stabilizers collectively maintain a longitudinal position of each of the plurality of sutures with respect to the wire.

4. The method of claim 1, wherein movement of second end of the suture is longitudinally restrained with respect to the wire.

5. The method of claim 4, wherein the second end of the suture is tied to the wire.

6. The method of claim 4, wherein the wire includes a plurality of position stabilizers to restrain movement of the second end of the suture.

7. The method of claim 1, further comprising the step of proximally retracting the release pin to disengage the release pin from the suture and proximally retracting the wire to disengage the suture from the prosthetic heart valve.

8. The method of claim 1, wherein the first end of the suture includes a loop through which the release pin is threaded.

9. The method of claim 1, wherein the prosthetic heart valve includes an eyelet and the suture is threaded through the eyelet.

10. A combination delivery device and prosthetic heart valve, the combination comprising:

a prosthetic heart valve having a stent frame and a suture positioned around the stent frame, the suture including a first end and a second end; and

a delivery device including;

a catheter having a lumen and a slot transversely positioned with respect to the lumen, the slot sized to receive the prosthetic heart valve therein,

a release pin positioned within the lumen, the first end of the suture connected to the release pin;

a wire positioned within the lumen, the second end of the suture connected to the wire; and

wherein the wire can be pulled proximally to place tension in the suture and correspondingly compress the prosthetic heart valve.

11. The combination of claim 10, further comprising a plurality of sutures each having first and second ends, wherein the first end of each suture is connected to the release pin and the second end of each suture is connected to the wire.

12. The combination of claim 10, wherein movement of second end of the suture is longitudinally restrained with respect to the wire.

13. The combination of claim 12, wherein the second end of the suture is tied to the wire.

14. The combination of claim 12, wherein the wire includes a plurality of position stabilizers to restrain movement of the second end of the suture.

15. The combination of claim 10, wherein the first end of the suture includes a loop through which the release pin is threaded.

16. The combination of claim 10, further comprising a plurality of sutures, wherein each suture is the same length.