Cardiac valve procedure methods and devices

• US 8,740,974 B2
• Filed: 09/14/2012
• Issued: 06/03/2014
• Est. Priority Date: 01/27/1999
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Lambrecht, Gregory H., Liddicoat, John, Moore, Robert Kevin
• Primary Examiner(s): STEWART, JASON-DENNIS NEILKEN
• Application Number:
  US13/617,989
• Publication Number:
  US 20130073036A1
• Time in Patent Office: 627 Days
• Field of Search: 623/1.15, 623/1.24, 623/1.26, 623 21- 219
• US Class Current: 623/2.1
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2250/0059 temporary

Abstract

A method of treating a diseased cardiac valve can include implanting a valve prosthesis by compressing the valve prosthesis to a compressed state for delivery and expanding the valve prosthesis to an expanded state for deployment. The valve prosthesis can include a valve fixation device having a plurality of struts, a first circumferential row of cells coupled to the struts, and a second circumferential row of cells coupled to the struts. The struts are substantially rigid such that the struts do not change dimensions between the compressed state and the expanded state. The valve prosthesis can also include a plurality of leaflets and a plurality of commissures. The valve is coupled to the valve fixation device such that the commissures are radially aligned with respective struts of the plurality of struts.

Claims

1. A method of treating a diseased cardiac valve:

implanting a valve prosthesis at an implantation site at a native cardiac valve complex;

wherein implanting the valve prosthesis comprises compressing the valve prosthesis to a compressed state for delivery to the implantation site and expanding the valve prosthesis to an expanded state for deployment at the implantation site,

wherein the valve prosthesis has a longitudinal axis and comprises;

a valve fixation device comprising;

a plurality of struts that run in a direction substantially parallel to the longitudinal axis;

a first circumferential row of cells coupled to the plurality of struts; and

a second circumferential row of cells coupled to the plurality of struts;

the valve fixation device being compressible to a compressed state for delivery to an implantation site, and expandable to an expanded state for deployment at the implantation site;

the plurality of struts being substantially rigid such that the plurality of struts do not change dimensions between the compressed state and the expanded state; and

a valve comprising a plurality of leaflets and a plurality of commissures, the valve being coupled to the valve fixation device such that the plurality of commissures are radially aligned with respective struts of the plurality of struts.

2. The method of claim 1, wherein the valve comprises tissue.

3. The method of claim 1, wherein the plurality of struts comprises three struts.

4. The method of claim 3, wherein the three struts are circumferentially spaced apart by about 120 degrees.

5. The method of claim 1, wherein the valve fixation device is self-expandable.

6. The method of claim 1, wherein the valve fixation device is balloon-expandable.

7. The method of claim 1, wherein:

the first circumferential row of cells is coupled to the plurality of struts substantially at a base end of the struts; and

the second circumferential row of cells is coupled to the plurality of struts substantially at an apical end of the struts.

8. The method of claim 1, wherein the valve is coupled to the valve fixation device at least at the plurality of struts.

9. The method of claim 8, wherein the valve fixation device further comprises a material at an upstream end of the valve fixation device, the material being configured to prevent perivalvular leakage.

10. A method of treating a diseased cardiac valve, comprising:

implanting a valve prosthesis at an implantation site at a native cardiac valve complex,

wherein implanting the valve prosthesis comprises circumferentially compressing the valve prosthesis to a compressed state for delivery to the implantation site, and circumferentially expanding the valve prosthesis to an expanded state for deployment at the implantation site, and

wherein the valve prosthesis has a longitudinal axis and comprises;

a valve fixation device that comprises;

a plurality of struts that run in a direction substantially parallel to the longitudinal axis; and

a plurality of expandable cells between the plurality of struts,

wherein the plurality of struts are substantially rigid such that the plurality of struts do not change dimensions between the compressed state and the expanded state; and

a valve comprising a plurality of leaflets and a plurality of commissures, the valve being coupled to the valve fixation device such that the plurality of commissures are radially aligned with respective struts of the plurality of struts, the valve being attached to the valve fixation device at least at the plurality of struts.

11. The method of claim 10, wherein the valve comprises tissue.

12. The method of claim 10, wherein the plurality of struts comprises three struts.

13. The method of claim 12, wherein the three struts are circumferentially spaced apart by about 120 degrees.

14. The method of claim 10, wherein the valve fixation device is self-expandable.

15. The method of claim 10, wherein the valve fixation device is balloon-expandable.

16. The method of claim 10, wherein the plurality of struts run along substantially an entire length of the valve fixation device.

17. The method of claim 10, wherein the valve fixation device further comprises a material at an upstream end of the valve fixation device, the material being configured to prevent perivalvular leakage.