Fluid flow prosthetic device

• US 20060149360A1
• Filed: 12/30/2004
• Published: 07/06/2006
• Est. Priority Date: 07/08/2003
• Status: Active Grant

• Current Assignee: Medtronic Ventor Technologies LTD. (Medtronic Plc)
• Original Assignee: Ventor Technologies Ltd. (Medtronic Plc)
• Inventors: Tuval, Yosi, Benary, Raphael, Schwammenthal, Ehud
• Granted Patent: US 7,201,772 B2
• Time in Patent Office: Days
• US Class Current: 623/1.240
• CPC Class Codes: A61F 2/06 Blood vessels
• 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 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2002/068 Modifying the blood flow model, e.g. by diffuser or deflector
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2250/0039 differing in diameter

Abstract

A prosthetic device including a valve-orifice attachment member attachable to a valve in a blood vessel and including a fluid inlet, and a diverging member that extends from the fluid inlet, the diverging member including a proximal end near the fluid inlet and a distal end distanced from the proximal end, wherein a distal portion of the diverging member has a larger cross-sectional area for fluid flow therethrough than a proximal portion thereof. The diverging member may have a diverging taper that causes fluid to flow therethrough with pressure recovery at the distal end thereof.

Claims

1. A prosthetic device comprising:

a valve-orifice attachment member attachable to a valve in a blood vessel and comprising a fluid inlet; and

a diverging member that extends from said fluid inlet, said diverging member comprising a proximal end near said fluid inlet and a distal end distanced from said proximal end, wherein a distal portion of said diverging member has a larger cross-sectional area for fluid flow therethrough than a proximal portion thereof.

2. The prosthetic device according to claim 1, wherein said diverging member has a diverging taper that causes fluid to flow therethrough with pressure recovery at said distal end thereof.

3. The prosthetic device according to claim 2, wherein said taper widens with a widening angle a from 0.1°

to 50°

.

4. The prosthetic device according to claim 2, wherein said taper widens with a widening angle a of approximately 5-8°

.

5. The prosthetic device according to claim 2, wherein an inner envelope lines an inner surface of at least one of said diverging member and said valve-orifice attachment member.

6. The prosthetic device according to claim 1, wherein said fluid inlet is non-divergent distally.

7. The prosthetic device according to claim 1, wherein said valve-orifice attachment member comprises clasping members adapted to clasp opposite sides of the valve near the orifice.

8. The prosthetic device according to claim 1, wherein said valve-orifice attachment member comprises an annular clamp adapted to engage valve leaflets.

9. The prosthetic device according to claim 1, further comprising a prosthetic valve disposed in said diverging member, said prosthetic valve being adapted to control fluid flow through said diverging member.

10. The prosthetic device according to claim 9, wherein said prosthetic valve comprises at least one of a mechanical heart valve, biological heart valve, a heart valve allograft, a vein valve, and a pericardial valve.

11. The prosthetic device according to claim 1, further comprising an annular array of bracing elements at said distal end of said diverging member engageable with an inner surface of a blood vessel.

12. The prosthetic device according to claim 1, wherein said diverging member is straight and conical.

13. The prosthetic device according to claim 1, wherein said diverging member is curved convexly.

14. The prosthetic device according to claim 1, wherein said diverging member is curved concavely.

15. The prosthetic device according to claim 1, wherein said diverging member is a prosthetic valve with a diverging shape.

16. The prosthetic device according to claim 1, wherein said diverging member opens in systole and closes in diastole.

17. The prosthetic device according to claim 1, further comprising a plurality of axially-extending struts pivotally mounted near the valve-orifice attachment member and extending through at least a portion of said diverging member.