Products and methods for circulatory system valve repair

• US 6,129,758 A
• Filed: 10/03/1996
• Issued: 10/10/2000
• Est. Priority Date: 10/06/1995
• Status: Expired due to Term

• Current Assignee: Cardiomend LLC
• Original Assignee: Cardiomend LLC
• Inventors: Love, Jack W.
• Primary Examiner(s): Milano, Michael J.
• Application Number:
  US08/726,342
• Time in Patent Office: 1,468 Days
• Field of Search: 623/2, 623/2.11
• US Class Current: 623/2.11
• CPC Class Codes: A61F 2/2415 Manufacturing methods
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2496 Devices for determining the dimensions of the prosthetic valve to be implanted, e.g. templates, sizers

Abstract

A standardized and reproducible method and instruments related thereto for repair of atrio-ventricular, aortic and pulmonary valves is provided.

Claims

1. A surgical instrument for holding a piece of tissue in a configuration of at least one leaflet of a circulatory system valve to facilitate surgical attachment of the tissue, the instrument comprising:

a. a first and second former having respective first and second tissue forming surfaces, wherein the first tissue forming surface is complementary and engagable to the second tissue forming surface, such that when tissue is placed between the first tissue forming surface and the second tissue forming surface, and the tissue forming surfaces are brought into complementary engagement, the tissue is held in a configuration of at least one leaflet of a closed or partially closed circulatory system valve; and

b. a first handle attached to the first former and a second handle attached to the second former for holding the tissue forming surfaces in complementary engagement, whereby the tissue may be held in place for surgical attachment.

2. The instrument of claim 1 wherein the first tissue forming surface and the second tissue forming surface are configured such that when tissue is placed between the first tissue forming surface and the complementary second tissue forming surface, the tissue is held in a form suitable as a valve repair material for at least one leaflet of a tri-leaflet valve.

3. The instrument of claim 1 wherein the first tissue forming surface and the second tissue forming surface are configured such that when tissue is placed between the first tissue forming surface and the complementary second tissue forming surface, the tissue is held in a form suitable as a valve repair material for at least one leaflet of a bi-leaflet valve.

4. The instrument of claim 1 wherein the piece of tissue is held in a configuration of at least one leaflet of a closed or partially closed circulatory system valve.

5. The instrument of claim 1 wherein the piece of tissue is precut in a preestablished geometrical pattern corresponding to the shape of at least one leaflet of a circulatory system valve.

6. The instrument of claim 1 further comprising a means for limiting the rotation of the first handle relative to the second handle.

7. The instrument of claim 1 wherein at least one tissue forming surface further comprises a tissue retention region.

8. The instrument of claim 7 wherein the tissue retention region comprises an area of ridges, pebbling, etches or grooves.

9. The instrument of claim 1 wherein the first handle is slidably engageable with the second handle.

10. The instrument of claim 9 wherein:

a) each tissue former has a back surface opposite the tissue forming surface, wherein the first handle is attached to the center of the tissue forming surface of the first former, and wherein the second handle is attached to the center of the back surface of the second former; and

b) the handle of the second former has a hollow portion having a cross-sectional dimensions greater than the handle of the first former, such that the handle of the first former may be slidably engaged and inserted into the hollow portion of the handle of the second former.

11. The instrument of claim 10 wherein the handles have a corresponding polygonal shape.