Intraparietal Reinforcing Device for Biological Cardiac Prosthesis and Reinforced Biological Heart Valve Prosthesis

• US 20080133005A1
• Filed: 03/01/2005
• Published: 06/05/2008
• Est. Priority Date: 03/01/2005
• Status: Active Grant

• Current Assignee: Leman Cardiovascular Sa
• Original Assignee: Leman Cardiovascular Sa
• Inventors: Kalangos, Afksendiyos, Andrieu, Raymond
• Granted Patent: US 7,927,369 B2
• Time in Patent Office: Days
• US Class Current: 623/2.13
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents

Abstract

An intraparietal reinforcing device is designed to be integrated into a biological valvular prosthesis consisting of a biological cardiac valve having a valve plane formed by leaflets attached laterally to an external wall along commissurae. The device can be placed in the organic tissue of the valve, and includes a base and a stabilizing part mounted thereon. The device can be inserted inside the external wall of the valve to reinforce the valve'"'"'s structure and to maintain the valve'"'"'s shape after implantation. The stabilizing part includes at least two intraparietal shafts, designed to be inserted into the valve tissue and positioned on the base so that, once the device is put in place on the valve, they are displaced laterally to the intersection point of the intersection line of the external wall with the commissurae and of the valve plane. A biological prosthesis may be provided with such a device.

Claims

1. Intraparietal reinforcing device designed to be integrated into a biological valvular prosthesis comprising a biological cardiac valve comprising organic tissue, in which the valve is composed of leaflets attached laterally to an external tubular wall along commissurae, with the device set up to be placed inside the organic tissue of the cardiac valve, and comprising a base and a stabilizing part mounted on the base which is designed to be inserted into the tubular external wall of the cardiac valve and designed to reinforce the structure of the valve in a way to maintain the shape of the cardiac valve after implantation, and wherein the stabilizing part includes at least two intraparietal shafts designed to be inserted into the organic tissue of the cardiac valve, and with the intraparietal shafts positioned on the base in a way that, once the device is in place on the cardiac valve, the shafts are displaced laterally to an intersection point of an intersection line of the tubular external wall with the commissurae of the cardiac valve and of the valvular plane of the cardiac valve of the valvular prosthesis.

2. Intraparietal reinforcing device as in claim 1, wherein once the device is put in place on the cardiac valve, the intraparietal shafts are positioned on the base with a displacement identical on both sides from the point on the base corresponding to the intersection point.

3. Intraparietal reinforcing device according to claim 1, wherein the intraparietal shafts form a right angle to the base so that once the device is put in place on the cardiac valve, the shafts are displaced laterally relative to each intersection line of the tubular external wall with the commissurae of the cardiac valve of the valvular prosthesis.

4. Intraparietal reinforcing device according to claim 1, wherein the base is made up of a curved or straight bar.

5. Intraparietal reinforcing device according to claim 1, wherein the base is made up of a ring.

6. Intraparietal reinforcing device according to claim 1, wherein the base is made up of a semi-ring with one part open on its circumference.

7. Intraparietal reinforcing device according to claim 1, wherein said device includes at least one attachment designed to be fixed on the second end of the shafts.

8. Biological valvular prosthesis consisting of a biological cardiac valve having a valve plane and commissurae, in which the valve plane is formed by leaflets attached laterally to a tubular external wall along the commissurae, wherein said prosthesis is provided with at least one intraparietal reinforcing device according to claim 1.

9. Biological valvular prosthesis according to claim 8, wherein the cardiac valve is an aortic valve of animal origin fitted with the intraparietal reinforcing device.

10. Biological valvular prosthesis according to claim 8, wherein the intraparietal shafts of the intraparietal reinforcing device are placed on the inside of the tubular external wall of the cardiac valve in parallel to the intersection lines of this device with the commissurae of the cardiac valve.

11. Biological vavular prosthesis according to claim 8, wherein the base and/or the attachment of the intraparietal reinforcing device is/are covered by biological material.

12. Biological valvular prosthesis according to claim 8, wherein the base and/or the attachment of the intraparietal reinforcing device is/are covered by synthetic tissue.