SUTURELESS PROSTHETIC DEVICE

• US 20140243964A1
• Filed: 02/05/2014
• Published: 08/28/2014
• Est. Priority Date: 02/25/2013
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Inventors: Venkatasubramanian, Ramji T.
• Granted Patent: US 9,326,850 B2
• Time in Patent Office: Days
• US Class Current: 623/2.13
• 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

Abstract

A prosthetic device for use in an anatomical orifice or lumen of a patient includes an expandable first stent structure coupled to a valve support structure having at least one leaflet. The stent structure includes a collar provided with at least one groove or opening adapted to engage a tab extending from the valve support structure. Rotation of the stent structure and valve support structure relative to one another assembles the prosthetic valve device. The prosthetic valve device may be used for sutureless treatment of various valvular conditions such as aorta stenosis and mitral valve replacement.

Claims

1. A prosthetic device for use in an anatomical orifice or lumen of a patient, the device comprising:

a first stent structure defining an interior region and having a collar at one end thereof;

a valve support structure adapted to be secured to the collar within the interior region of the first stent structure; and

a valve structure coupled to the valve support structure.

2. The device of claim 1, wherein the first stent structure is configured to be self-expandable from a collapsed state to an expanded state.

3. The device of claim 2, wherein the valve support structure comprises a second stent structure.

4. The device of claim 3, wherein the first and second stent structures are constructed from titanium or nitinol.

5. The device of claim 1, wherein the valve structure includes a plurality of leaflets.

6. The device of claim 1, wherein the valve support structure includes an engagement member and the collar includes an engagement member receiving structure.

7. The device of claim 6, wherein the engagement member receiving structure includes a longitudinal first groove in communication with a circumferential second groove adapted to receive the engagement member.

8. The device of claim 7, wherein the engagement member comprises at least one radially projecting tab adapted to fit within the first and second grooves.

9. The device of claim 8, wherein the valve support structure comprises a second stent having a plurality of upstanding support posts coupled to the valve structure.

10. The device of claim 8, wherein the first stent structure includes a longitudinal axis through the interior region and the valve support structure is adapted to be received within the interior region along the longitudinal axis opposing the collar, whereby the at least one tab is received within the first groove which is arranged parallel to the longitudinal axis, and whereby the value support structure is adapted to be rotated around the longitudinal axis such that the at least one tab travels along the second groove in a circumferential direction relative to the longitudinal axis.

11. The device of claim 6, wherein the receiving structure includes a longitudinal first opening in communication with a circumferential second opening adapted to receive the engagement member.

12. The device of claim 1, wherein the valve structure comprises a heart valve.

13. A prosthetic device for use in an anatomical orifice or lumen of a patient, the device comprising:

a first stent structure defining an interior region having a longitudinal axis, the first stent structure including a collar, the collar having at least one engagement member receiving structure;

a second stent structure having at least one engagement member adapted to be received within the engagement member receiving structure of the first stent structure for releasably securing the second stent structure to the first stent structure within the interior region.

14. The device of claim 13, wherein the engagement member receiving structure has a first portion extending parallel to the longitudinal axis and a second portion extending in a circumferential direction about the longitudinal axis.

15. The device of claim 14, wherein the first and second portions comprise a groove.

16. The device of claim 14, wherein the first and second portions comprise an opening.

17. The device of claim 13, further including a valve structure coupled to the second stent structure.

18. The device of claim 17, wherein the valve structure comprises a heart valve.

28. The method of claim 15, wherein the valve support structure comprises a second stent structure.

19. A sutureless prosthetic heart valve device comprising:

a first stent structure defining a first interior region about a longitudinal axis, the first stent structure including a collar surrounding one end of the first stent structure, the collar including a first groove extending longitudinally to an edge of the collar in communication with a second groove extending circumferentially about the collar, wherein the first stent structure is configured to be expandable from a collapsed state to an expanded state;

a second stent structure defining a second interior region, the second stent structure supporting a heart valve structure having at least one leaflet arranged within the second interior region, the second stent structure including a base having at least one tab extending radially outward therefrom;

wherein the second stent structure is configured to be received within the first interior region of the first stent structure with the base juxtaposing the collar; and

wherein the second stent structure is securable to the first stent structure by initially receiving the at least one tab within the first groove, and then, within the second groove of the collar by rotation of the first and second stent structures relative to one another.

20. The device of claim 19, wherein the first and second stent structures are constructed from nitinol or titanium.

21. The device of claim 19, wherein the first stent structure is configured to be self-expandable from a collapsed state to an expanded state.

22. A method for assembling a prosthetic valve device for use in an anatomical orifice or lumen of a patient, the method comprising:

arranging a valve support structure including a valve having at least one leaflet within an expandable first stent structure, the expandable first stent structure configured to be attached at a native site of an anatomical orifice or lumen of a patient; and

securing the value support structure to the first stent structure.

23. The method of claim 22, further including expanding the first stent structure from a collapsed state to an expanded state.

24. The method of claim 22, wherein the first stent structure includes a collar having a circumferential groove in communication with a longitudinal groove along an edge of the collar.

25. The method of claim 24, wherein the valve support structure includes at least one tab extending radially outward therefrom, the tab configured to be received within the circumferential and longitudinal grooves.

26. The method of claim 25, wherein the step of securing comprises:

mating the at least one tab of the valve support structure with the collar on the first stent structure by directing the at least one tab into the longitudinal groove and rotating the valve support structure such that the at least one tab is directed from the longitudinal groove and into the circumferential groove.

27. The method of claim 25, wherein arranging the valve support structure comprises positioning the at least one tab juxtaposed the collar of the first stent structure.

29. A prosthetic device for use in an anatomical orifice or lumen of a patient, the device comprising:

a first structure defining a first interior region expandable from a collapsed configuration to an expanded configuration, the first structure having a collar at an end thereof; and

a second structure defining a second interior region, the second structure having a portion configured to be secured to the collar when the second structure is received within the first interior region when the first structure is in the expanded configuration.

30. The device of claim 29, wherein the first interior region is in fluid communication with the second interior region when the second structure is secured to the first structure.

31. The device of claim 30, wherein the first and second structures comprise stents.

32. The device of claim 30, wherein the collar includes at least one tab and the portion of the second structure includes a groove or an opening adapted to receive the at least one tab.