Medical implant
First Claim
1. A prosthetic device for promoting controlled collagenous tissue growth when suspended in the lumen of a blood vessel in the presence of blood flow which comprises:
- (a) Tubular substrate means having a generally cylindrical outside surface and a generally cylindrical inside surface terminating at first and second open ends to permit blood flow along said inside surface,(b) At least one of said surfaces being a thrombogenic surface to promote growth of collagenous tissue along such thrombogenic surface and(c) Tether means for positioning the tubular substrate means within the lumen so as to allow fluid flow within the lumen to contact both the inside and outside surfaces of the tubular substrate means, said tether means having a first attachment to the substrate means and a second attachment, spaced apart from the first attachment, for attaching to the lumen.
1 Assignment
0 Petitions
Accused Products
Abstract
This invention is described and illustrated in connection with the generation of a homograft composed of collagenous tissue generated on a prosthetic device. A tubular substrate having generally cylindrical outside and inside surfaces is suspended in the lumen of a blood vessel of a living body. The tubular substrate is open at each end to permit blood to flow over both the inside and outside surfaces. One of the surfaces of the substrate is a thrombogenic surface or supports a thrombogenic mesh material to promote growth of a tube of collagenous tissue suitable for use as a surgical graft. The substrate is suspended in the blood flow of a blood vessel by an anchor which permits the substrate to freely move within the lumen of the vessel but is anchored by the tether to prevent the substrate from moving along the vessel in the direction of blood flow. The collagenous tissue growth about the substrate is generally tubular and suitable for use as a surgical graft.
The method of generating a homograft includes preparing a prosthesis composed of a tubular substrate. The substrate is open at each end to permit blood to flow along the length of the substrate inside wall. The substrate is selected to have at least one thrombogenic surface or a thrombogenic mesh material supported by the substrate. The prosthesis is inserted in the lumen of a blood vessel, either a vein or artery, of a living body and anchored in the lumen of the vessel to prevent the substrate from moving along the vessel with the blood flow. The body generates collagenous growth on the thrombogenic surface of the substrate while the substrate is freely suspended in the blood flow of the vessel. The substrate is then removed from the vessel after which a tubular homograft of collagenous tissue is removed from the substrate.
-
Citations
18 Claims
-
1. A prosthetic device for promoting controlled collagenous tissue growth when suspended in the lumen of a blood vessel in the presence of blood flow which comprises:
-
(a) Tubular substrate means having a generally cylindrical outside surface and a generally cylindrical inside surface terminating at first and second open ends to permit blood flow along said inside surface, (b) At least one of said surfaces being a thrombogenic surface to promote growth of collagenous tissue along such thrombogenic surface and (c) Tether means for positioning the tubular substrate means within the lumen so as to allow fluid flow within the lumen to contact both the inside and outside surfaces of the tubular substrate means, said tether means having a first attachment to the substrate means and a second attachment, spaced apart from the first attachment, for attaching to the lumen. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A prosthesis for promoting controlled collagenous tissue growth when suspended in the lumen of a vessel in the presence of blood flow which comprises:
-
(a) Tubular substrate means having a generally cylindrical outside surface and a generally cylindrical inside surface terminating at first and second open ends to permit blood flow along said inside surface, (b) Said inside and outside surfaces being thrombogenic to promote growth of collagenous tissue along such thrombogenic surfaces, and (c) Tether means for positioning the tubular substrate means within the lumen so as to allow fluid flow within the lumen to contact both the inside and outside surfaces of the tubular substrate means, said tether means having a first attachment to the substrate means and a second attachment, spaced apart from the first attachment, for attaching to the lumen.
-
-
7. A device for promoting controlled collagenous tissue growth when suspended in the lumen of a vessel in the presence of blood flow which comprises:
-
(a) A tube of thrombogenic mesh material, (b) Tubular substrate means for supporting said mesh material, said tubular substrate means having a generally cylindrical outside surface and a generally cylindrical inside surface terminating at first and second open ends to permit blood flow along said mesh material extending from said first end to said second end of said substrate means, (c) Contact means at said first and second ends for connecting said tube of mesh material at each end of said substrate means to immobilize said mesh material between said first and second ends, and (d) Tether means for positioning the tubular substrate means within the lumen so as to allow fluid flow within the lumen to contact both the inside and outside surfaces of the tubular substrate means, said tether means having a first attachment to the substrate means and a second attachment, spaced apart from the first attachment, for attaching to the lumen. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification