Bioprosthetic heart valve

• US 7,972,377 B2
• Filed: 08/29/2008
• Issued: 07/05/2011
• Est. Priority Date: 12/27/2001
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Lane, Ernest
• Primary Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US12/202,022
• Publication Number:
  US 20080319543A1
• Time in Patent Office: 1,040 Days
• Field of Search: 623 21- 242
• US Class Current: 623/2.14
• 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 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded

Abstract

A trileaflet biological prosthetic heart valve (11, 41) comprising a thin, rigid annular outer frame (25, 43) which supports three elastic, laminated spring inner frames (18, 57) which in turn provide consistent geometric form and structure for attachment of tissue leaflets (15, 71).

Claims

1. A prosthetic heart valve, comprising:

an annular frame having a central passageway and comprising a trefoil shape in its horizontal aspect;

a biocompatible fabric covering the annular frame; and

a plurality of struts connected to the annular frame, the struts carrying tissue leaflets that converge toward one another to close the passageway and diverge away from one another to open the passageway.

2. The prosthetic heart valve of claim 1, the annular frame being scalloped in its axial aspect for supra-annular placement.

3. The prosthetic heart valve of claim 1, each of the struts comprising a laminate structure.

4. The prosthetic heart valve of claim 1, the struts being covered with biocompatible fabric.

5. The prosthetic heart valve of claim 1, further comprising a sewing ring encircling and extending outwardly from the annular frame.

6. The prosthetic heart valve of claim 5, wherein the fabric covering the annular frame is gathered to provide the sewing ring.

7. A prosthetic heart valve, comprising:

an annular frame having a central passageway and comprising a trefoil shape in its horizontal aspect defining three lobes;

a plurality of struts connected to respective lobes of the annular frame, the struts carrying tissue leaflets that converge toward one another to close the passageway and diverge away from one another to open the passageway; and

biocompatible fabric covering the annular frame and the struts.

8. The prosthetic heart valve of claim 7, the annular frame being scalloped in its axial aspect for supra-annular placement.

9. The prosthetic heart valve of claim 7, each of the struts comprising a laminate structure.

10. The prosthetic heart valve of claim 7, further comprising a sewing ring encircling and extending outwardly from the annular frame.