Stent With Mechanical Or Biological Heart Valve For Minimally Invasive Valve Replacement Procedure And Stent Application Device

• US 20170056165A1
• Filed: 02/27/2015
• Published: 03/02/2017
• Est. Priority Date: 03/14/2014
• Status: Abandoned Application

• Current Assignee: Antonio Francisco Neves Filho
• Original Assignee: Antonio Francisco Neves Filho
• Inventors: Neves Filho, Antonio Francisco
• Application Number:
  US15/118,841
• Publication Number:
  US 20170056165A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/0095 Packages or dispensers for prostheses or other implants for intraocular lenses A61F2/1691; for dental surgery A61C19/02
• CPC Class Codes: A61F 2/2403 with pivoting rigid closure members check valves with hinged closure members in general F16K15/03
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• 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 2/2445 Annuloplasty rings in direct contact with the valve annulus
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/0052 T-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2250/006 modular

Abstract

A cardiac stent assembly featuring support flaps for a heart valve replacement procedure, while being able to place a mechanical or biological valve in an adapter fixed on the inner part of a stent body of the stent assembly. The stent assembly can be placed within heart valves sustained on an annular or ovoid mechanical support ring. For the positioning procedure of the stent assembly in the valve, an application device can be used wherein the stent body is inside the application device so that is possible to assemble and keep the entire stent assembly ready for use.

Claims

1. A stent assembly comprising:

a stent body of tubular shape and grated structure;

an upper flap; and

a lower flap; and

an adapter;

wherein the lower flap is in proximity to and parallel to the upper flap, located at an intermediate part of the stent body;

wherein both the upper and lower flaps and the stent body are made of wired material and at least partially coated with an inert material, which allows physiological movement of the mitral annulus and fitting of the adapter; and

wherein the adapter is used to support a heart valve within the stent between both the upper and lower flaps.

2. The stent assembly according to claim 1 further comprising the heart valve being a mechanical valve with two floodgates that allow a unidirectional flow.

3. The stent assembly according to claim 1 further comprising the heart valve being a biological valve.

4. The stent assembly according to claim 1, wherein the stent has a radiographic opaque property, allowing it to be viewed through radiography.

5. The stent assembly according to claim 1 further comprising an oval or annuloplasty ring, with the ring placed between the upper flap and lower flap on an outer part of the stent body.

6. The stent assembly according to claim 1 further comprising:

a fixing system active through the upper flap and lower flap; and

claws at a lower part of the stent body.

8. The stent assembly according to claim 1, wherein at least portions of the stent body, the upper flap, and the lower flap have hooks.

9. The stent assembly according to claim 1, wherein at least portions of each of the upper flap and lower flap are made of metallic segments.

10. The stent assembly according to claim 1 further comprising an application device, wherein the application device comprises:

a cylindrical body;

a plunger; and

fixing elements;

wherein the plunger is located in the cylindrical body, and the plunger is attached to the stent body via the fixing elements;

wherein the stent body is stretched and elongated inside the cylindrical body; and

wherein the end of the stent body in proximity to the upper flap and lower flap are facing the side of the plunger.

11. The stent assembly according to claim 1 further comprising an application device, wherein the application device comprises:

a cylindrical body;

a plunger; and

fixing elements;

wherein the plunger is located in the cylindrical body, and the plunger is attached to the stent body via the fixing elements;

wherein the stent body is stretched and elongated inside the cylindrical body; and

wherein the end of the stent body distal from the upper flap and lower flap are facing the side of the plunger.

12. The stent assembly according to claim 10, wherein the application device further comprises:

a thread; and

a cap;

wherein the thread is located at the end of the application device where the stent body exits the application device upon implant of the stent body, and enables placement of the cap in a location that seals the inner part of the cylindrical body.

13. The stent assembly according to claim 10 further comprising the heart valve;

wherein the application device has a diameter large enough to keep the stent body with the heart valve with only the upper and lower flaps compressed within the application device.

14. The stent assembly according to claim 10, wherein the application device has an anatomical shape.

15. The stent assembly according to claim 3, wherein the biological valve comprises one of a bovine and a pig pericardium.

16. The stent assembly according to claim 6, wherein the claws are capable of piercing heart tissue at a location of an implanted stent body.

17. The stent assembly according to claim 8 further comprising an oval or annuloplasty ring placed between the upper flap and lower flap on an outer part of the stent body;

wherein the hooks are capable of grappling muscle at a location of an implanted stent body, facilitating the positioning and fixing of the stent body to the ring.

18. The stent assembly according to claim 9, wherein the metallic segments aid in providing mechanical resistance of the upper and lower flaps.

19. The stent assembly according to claim 11, wherein the application device further comprises:

a thread; and

a cap;

wherein the thread is located at the end of the application device where the stent body exits the application device upon implant of the stent body, and enables placement of the cap in a location that seals the inner part of the cylindrical body.

20. The stent assembly according to claim 11 further comprising the heart valve;

wherein the application device has a diameter large enough to keep the stent body with the heart valve with only the upper and lower flaps compressed within the application device.

21. The stent assembly according to claim 11, wherein the application device has an anatomical shape.

22. The stent assembly according to claim 14, wherein the application device has an ogive shape that one or both facilitates and enables movement of the application device inside veins and arteries.

23. The stent assembly according to claim 21, wherein the application device has an ogive shape that one or both facilitates and enables movement of the application device inside veins and arteries.

7. (canceled)

24. A stent assembly comprising:

an upper flap;

a lower flap; and

an adapter;

wherein the lower flap is in proximity to and parallel to the upper flap;

wherein both the upper and lower flaps are made of wired material and at least partially coated with an inert material, which allows physiological movement of the mitral annulus and fitting of the adapter; and

wherein the adapter is used to support a heart valve within the stent assembly between both the upper and lower flaps.