PROSTHETIC DEVICES, SYSTEMS AND METHODS FOR REPLACING HEART VALVES

• US 20120078360A1
• Filed: 09/22/2011
• Published: 03/29/2012
• Est. Priority Date: 09/23/2010
• Status: Abandoned Application

• Current Assignee: Transmural Systems LLC
• Original Assignee: Transmural Systems LLC
• Inventors: Rafiee, Nasser
• Application Number:
  US13/240,793
• Publication Number:
  US 20120078360A1
• Time in Patent Office: Days
• US Class Current: 623/2.37
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2250/006 modular
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

Exemplary embodiments provide a valve prosthesis for deployment at an annulus of a heart valve. The valve prosthesis includes a series of connected loops that form a looped structure for placement in the annulus. The loops include a first set of fastening mechanisms that extends radially outward over the annular ring and fasten the valve prosthesis to the atrium. The loops also include a second set of fastening mechanisms that extends radially outward at the annular ring and fasten the valve prosthesis to the annular ring. The loops optionally include a third set of fastening mechanisms that extends radially outward under the annular ring and fasten the valve prosthesis to the ventricle.

Claims

1. A valve prosthesis, comprising:

a tubular member configured for deployment in a heart valve annulus;

a first set of fastening mechanisms radially and outwardly disposed from the tubular member and configured to attach the valve prosthesis to cardiac tissue above the heart valve annulus; and

a second set of fastening mechanisms radially and outwardly disposed from the tubular member and configured to attach the valve prosthesis to cardiac tissue below the heart valve annulus.

2. The valve prosthesis of claim 1, further comprising:

a third set of fastening mechanisms radially and outwardly disposed from the tubular member and configured to attach the valve prosthesis to cardiac tissue at or above the heart valve annulus.

3. The valve prosthesis of claim 1, wherein the first set of fastening mechanisms is formed by proximal portions of a series of loop elements that are connected to form a looped structure.

4. The valve prosthesis of claim 1, wherein the second set of fastening mechanisms is formed by distal portions of a series of loop elements that are connected to form a looped structure.

5. The valve prosthesis of claim 1, comprising:

a plurality of first loop elements connected to form a ring shape, each first loop element comprising;

a mid portion;

a proximal portion that extends radially and outwardly away from the mid portion at a first terminal end of the mid portion; and

a distal portion that extends radially and outwardly away from the mid portion at a second terminal end of the mid portion.

6. The valve prosthesis of claim 5, wherein the mid portions of the plurality of first loop elements configured in the ring shape form the tubular member.

7. The valve prosthesis of claim 5, wherein the proximal portions of the plurality of first loop elements configured in the ring shape form the first set of fastening mechanisms.

8. The valve prosthesis of claim 5, wherein the distal portions of the plurality of first loop elements configured in the ring shape form the second set of fastening mechanisms.

9. The valve prosthesis of claim 5, further comprising:

a plurality of second loop elements connected to form a ring shape, each second loop element comprising;

a mid portion; and

a proximal portion that extends radially and outwardly away from the mid portion at a first terminal end of the mid portion.

10. The valve prosthesis of claim 9, wherein the mid portions of the plurality of first loop elements and the mid portions of the plurality of second loop elements form the tubular member.

11. The valve prosthesis of claim 9, wherein:

the proximal portions of the plurality of first loop elements configured in the ring shape form the first set of fastening mechanisms;

the distal portions of the plurality of first loop elements configured in the ring shape form the second set of fastening mechanisms; and

the proximal portions of the plurality of second loop elements configured in the ring shape form a third set of fastening mechanisms radially and outwardly disposed from the tubular member and configured to attach the valve prosthesis to cardiac tissue at or above the heart valve annulus.

12. The valve prosthesis of claim 9, wherein the plurality of first loop elements and the plurality of second loop elements are connected side-by-side in an alternating manner to form the ring shape.

13. The valve prosthesis of claim 9, wherein each of the plurality of second loop elements is provided within one of the plurality of first loop elements, and wherein pairs of first and second loop elements are connected side-by-side to form the ring shape.

14. The valve prosthesis of claim 5, wherein one or more spacings between the first loop elements and a spacing within each of the first loop elements is configured such that the valve prosthesis is compliant and conforms to the shape and anatomy of the heart valve annulus in a natural manner.

15. The valve prosthesis of claim 9, wherein one or more spacings between the second loop elements and a spacing within each of the second loop elements is configured such that the valve prosthesis is compliant and conforms to the shape and anatomy of the heart valve annulus in a natural manner.