Implantable vascular device

• US 5,879,320 A
• Filed: 12/23/1996
• Issued: 03/09/1999
• Est. Priority Date: 12/23/1996
• Status: Expired due to Fees

• Current Assignee: Craig Richard Cazenave
• Original Assignee: Craig Richard Cazenave
• Inventors: Cazenave, Craig Richard
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): O YONG, KI
• Application Number:
  US08/771,894
• Time in Patent Office: 806 Days
• Field of Search: 604/4-6, 604/8-9, 604/10, 604/98, 604/96, 604/101, 604/102, 604/264, 604/280, 604/191, 604/192, 604/194, 623/1
• US Class Current: 604/8
• CPC Class Codes: A61M 1/3655 Arterio-venous shunts or fistulae

Abstract

The present invention is an implantable vascular device which has the ability to open and close without the formation of thrombi. The device comprises at least one shunt which maintains a valve system. This shunt is surgically grafted to a blood line for enabling fluid flow through the shunt when the valve system is in an opened state. This will provide a device which is well suited for use in hemodialysis because the shunt can be opened for hemodialysis and closed when not in use. The destructive problems associated with the high flow states is limited only to the short time interval of the hemodialysis.

Claims

1. An implantable vascular device to be implanted in a living body to facilitate access to a fluid path with the living body, said implantable vascular device comprising:

an arterial shunt having a first valve, being slidable for surgically coupling exteriorly to at least one blood line and including a fluid communication means for enabling fluid flow from said at least one blood line and through said arterial shunt when said valve being slid in an opened position, providing a fistula with said valve;

said valve being slidable linearly;

said valve including an activating means for opening and closing said valve;

a first pliable and flexible lid being provided on said arterial shunt for protecting and covering said activating means of said first valve and said first pliable lid provides a smooth outer surface for preventing protrusion of said activating means of said slidable valve and for preventing fibrous in-growth in and around said activating means and said arterial shunt; and

said pliable and flexible lid enabling said activating means to be palpable under skin so as to manually open or close said slidable valve.

2. An implantable vascular device as in claim 1 further comprising a securing means located on said arterial shunt, said securing means having an extension which extends outwardly from a side of said arterial shunt, and said extension for surgically securing to a top surface of a fluid line.

3. An implantable vascular device as in claim 1 further comprising a venous shunt having a second valve for surgically coupling to a vein and said second valve having a second fluid communication means for enabling fluid flow from said vein into said venous shunt when said second valve is in an opened position, said arterial shunt for surgically coupling to an artery, and a flexible tube coupling said arterial shunt to said venous shunt for providing fluid communication between said arterial shunt and said venous shunt when said first valve and said second valve are in an opened position.

4. An implantable vascular device as in claim 3 wherein said venous shunt further includes a second pliable lid, said second pliable lid being located on said venous shunt for protecting and covering said second valve and said second pliable lid providing a smooth outer surface for preventing protrusion of said second valve and for preventing fibrous in-growth.

5. An implantable vascular device as in claim 1 wherein said arterial shunt includes a first opening and a second opening, a first graft surrounds said first opening, a second graft surrounds said second opening, said first graft capable of surgically coupling to a first blood line having an aperture therethrough for providing said aperture to be aligned with said first opening, said second opening capable of surgically coupling to a second blood line having an aperture therethrough for aligning said aperture to said second opening, and a slide bolt having a channel therethrough being maintained within said arterial shunt, said channel being aligned with said first opening and said second opening when said slide bolt is in an opened position for providing said fluid communication means, and said channel being dis-aligned with said first opening and said second opening when said slide bolt is in a closed position.

12. An implantable vascular device as in claim 1 wherein said valve being fabricated from a non-thrombogenic material.

13. An implantable vascular device as in claim 1 wherein said arterial shunt being fabricated from a non-corrosive and non-irritating material.

14. An implantable vascular device as in claim 1 wherein a handle extending upwardly from a window of said arterial shunt, said handle providing for said valve to be in an opened or closed position, and said first pliable lid covers and protects said handle, said handle being said activating means.

6. An implantable vascular device to be implanted in a living body to facilitate access to a fluid path with the living body, said implantable vascular device comprising:

an arterial shunt having a first valve for surgically coupling to an exterior of an artery and includes a fluid communication means for enabling fluid flow from the artery and through said arterial shunt when said valve is in an opened position and providing a fistula with said valve;

a venous shunt having a second valve for surgically coupling to a vein and includes a second fluid communication means for enabling fluid flow from said vein into said venous shunt when said second valve is in an opened position;

a tube having a coupling between said arterial shunt to said venous shunt to provide for fluid communication between said arterial shunt and said venous shunt when said first valve and said second valve are in an opened position; and

a first pliable lid being provided on said arterial shunt for protecting and covering said first valve and said first pliable lid providing a smooth outer surface for preventing protrusion of said first valve and for preventing fibrous in-growth, and a second pliable lid being provided on said venous shunt for protecting and covering said second valve and for preventing fibrous in-growth.

7. An implantable vascular device as in claim 6 wherein a first aperture is capable of being located in the artery and a second aperture is capable of being located in the vein, said arterial shunt and said venous shunt each include a first side having a first opening and a second side including a second opening, said first opening of said arterial shunt capable of aligning with said first aperture, said first opening of said venous shunt capable of aligning with the second aperture, said second opening of said arterial shunt being coupled to a first end of said tube, said second opening of said venous shunt being coupled to a second end of said tube, said first orifice and said first opening of said arterial shunt providing for said fluid communication means and said second orifice and first opening of said venous shunt providing for said second fluid communication means.

8. An implantable vascular device as in claim 7 where a graft being secured to said first opening of said arterial shunt and to said second opening of said venous shunt for providing a first graft being located between and attached to said first opening of said arterial shunt and the first aperture, and a second graft being located between and attached to said first opening of said venous shunt and the second aperture.

11. An implantable vascular device as in claim 7 wherein said first valve comprises a first slide bolt being housed and maintained within said arterial shunt, said second valve comprises a second slide bolt being housed and maintained within said venous shunt, said first bolt having a first channel extending therethrough, said second bolt having a second channel extending therethrough, said first channel being aligned with said first opening and said second opening of said arterial shunt to provide for said first valve to be in an opened position, and said second channel is aligned with said first opening and said second opening of said venous shunt to provide for said second valve to be in an opened position.

15. An implantable vascular device as in claim 6 wherein a securing means being located on said arterial shunt and said venous shunt, said securing means having an extension extending outwardly from a side of said arterial shunt, and said extension being capable of surgically securing to a top surface of the blood line.

16. An implantable vascular device as in claim 6 wherein a securing means extending outwardly from and being secured to said arterial shunt or said venous shunt and said securing means including an extension, and said extension is capable of being surgically secured to a top surface of the blood line.

17. An implantable vascular device as in claim 6 wherein said arterial shunt and said venous shunt each include a window, a handle extends upwardly from said window to provide for an opening and closing means for said arterial shunt and said venous shunt, and said first pliable lid covers and protects said handle of said arterial shunt and said second pliable lid covers and protects said handle of said venous shunt.

18. An implantable vascular device as in claim 6 wherein said first valve and said second valve being fabricated from a non-thrombogenic material.

19. An implantable vascular device as in claim 6 wherein said arterial shunt and said venous shunt are fabricated from a non-corrosive and non-irritating material.

9. An implantable vascular device 8 wherein a third graft being secured to said second opening of said arterial shunt and a fourth graft being secured to said second opening of said venous shunt for providing said third graft being located between and attached to said second opening of said arterial shunt and said first end of said tube, and said fourth graft being located between and capable of being attached to said second opening of said venous shunt and said second end of said tube.

10. An implantable vascular device as in claim 9 wherein said first graft, said second graft, said third graft, and said fourth graft are fabricated from e-polytetraflouroethylene or terylene.