Device for the treatment of damaged heart valve leaflets and methods of using the device

• US 5,928,224 A
• Filed: 01/24/1997
• Issued: 07/27/1999
• Est. Priority Date: 01/24/1997
• Status: Expired due to Fees

• Current Assignee: Michael D. Laufer, Tony R. Brown
• Original Assignee: Hearten Medical, Inc.
• Inventors: Laufer, Michael D.
• Primary Examiner(s): DeMille, Danton D.
• Assistant Examiner(s): Ruddy, David M.
• Application Number:
  US08/789,375
• Time in Patent Office: 914 Days
• Field of Search: 606/27-31, 606/41, 606/47, 606/48, 606/50, 606/8, 607/96, 607/98-102, 607/119, 607/122, 600/372, 600/373
• US Class Current: 606/27
• CPC Class Codes: A61B 18/00 Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body eye surgery A61F9/007; ear surgery A61F11/00
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2017/00119 alarm; indicating an abnormal situation
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2018/00642 with feedback, i.e. closed loop control

Abstract

A device and method for treating infected or damaged heart valve tissue by selectively heating, applying pressure, or both to the heart valve tissue to sterilize any infected portion of the tissue, reshape any misshapen portion, effect selective thinning of any thickened portion, and reduce the floppiness of any selected portion. The heat can be applied to or induced in the heart valve tissue.

Claims

1. An apparatus for treating an infected or damaged heart valve leaflet, comprising:

a support rod having a first end;

a first member having at least one protrusion with at least one convex surface thereon and a first member opening through the first member for receiving the support rod, the first member being adjacent the first end of the support rod;

a second member having at least one protrusion with at least one concave surface thereon corresponding to the protrusion on the first member and wherein the concave surface mates with the corresponding convex surface to form a shape of a normal heart valve leaflet, and a second member opening through the second member for receiving the support rod; and

means for energizing the first member and the second member to heat the infected or damaged heart valve leaflet.

2. The apparatus of claim 1 wherein the first member and the second member comprise electrodes for heating the heart valve leaflet.

3. The apparatus of claim 1 wherein the means for energizing comprises a radio-frequency generator.

4. The apparatus of claim 1 wherein the means for energizing comprises microwave means for heating the heart valve leaflet.

5. The apparatus of claim 1 wherein the means for energizing comprises ultrasound means for heating the heart valve leaflet.

6. The apparatus of claim 1 wherein the means for energizing comprises light means for heating the heart valve leaflet.

7. The apparatus of claim 1 wherein the means for energizing comprises a hot fluid element.

8. The apparatus of claim 1 further comprising a feedback indicator.

9. The apparatus of claim 8 wherein the feedback indicator is an auditory signal.

10. The apparatus of claim 8 wherein the feedback indicator is a visual signal.

11. The apparatus of claim 8 wherein the feedback indicator is indicative of temperature.

12. The apparatus of claim 8 wherein the feedback indicator is indicative of electrical characteristics.

13. The apparatus of claim 1 further comprising a member for applying pressure with the first member and the second member to the heart valve leaflet.

14. The apparatus of claim 1 wherein the first member has a plurality of protrusions thereon and the second member has a plurality of protrusions thereon corresponding to the plurality of protrusions on the first member.

15. The apparatus of claim 1 wherein the protrusion on the first member has a plurality of protrusions or indentations thereon.