Anti-thrombogenic elastomer and objects and prostheses made therefrom

Claim 2

An antithrombogenic composition consisting essentially of a biocompatible miscible matrix material selected from the group consisting of a silicone polymer, an acrylic polymer and a urethane polymer, and powderized graphite distributed throughout said miscible material rendering said composition anti-thrombogenic throughout.

Claim 3

An antithrombogenic composition comprising a biocompatible miscible matrix material selected from the group consisting of a silicone polymer, an acrylic polymer and a urethane polymer, and powderized graphite particles ranging in size from about 3 to about 7 microns distributed throughout said miscible material rendering said composition anti-thrombogenic throughout.

Claim 4

An antithrombogenic composition comprising a biocompatible miscible matrix material selected from the group consisting of a silicone polymer, an acrylic polymer and a urethane polymer, and powderized graphite particles ranging in size from about 3 to about 7 microns distributed throughout said miscible material rendering said composition anti-thrombogenic throughout.

Claim 5

An anti-thrombogenic composition comprising, miscible solidifiable material, the miscible solidifiable material selected from the group consisting of a silicone polymer, a urethane polymer and an acrylic polymer, powderized graphite particles ranging in size between about 3 to about 7 microns, said powderized graphite homogeneously distributed throughout said miscible material rendering said composition anti-thrombogenic throughout.

Claim 6

An anti-thrombogenic composition comprising, miscible solidifiable material, the miscible solidifiable material selected from the group consisting of a silicone polymer, a urethane polymer and an acrylic polymer, powderized graphite particles ranging in size between about 3 to about 7 microns, said powderized graphite homogeneously distributed throughout said miscible material rendering said composition anti-thrombogenic throughout.

Claim 7

A process for preparing a homogeneous anti-thrombogenic composition consisting essentially of mixing a miscible material containing a polymer selected from the group consisting of a silicone polymer, an acrylic polymer and a urethane polymer, and powderized graphite.

Claim 8

A process for preparing a homogeneous anti-thrombogenic composition consisting essentially of mixing a miscible material containing a polymer selected from the group consisting of a silicone polymer, an acrylic polymer and a urethane polymer, and powderized graphite.

Claim 9

The process of claim 4 wherein the miscible material is solidifiable.

Claim 10

The process of claim 5 wherein the solidifiable material is selected from the group consisting of a silicone polymer, urethane polymer, and an acrylic polymer.

Claim 11

The process of claim 4 wherein the anti-thrombogenic material is carbon.

Claim 12

The process of claim 7 wherein the anti-thrombogenic material is graphite particles.

Claim 13

A process for preparing a homogeneous anti-thrombogenic composition comprising mixing a miscible material containing a polymer selected from the group consisting of a silicone polymer, an acrylic polymer and a urethane polymer, and powderized graphite wherein said graphite comprises particles ranging in size from about 3 to about 7 microns.

Claim 14

A process for preparing a homogeneous anti-thrombogenic composition comprising mixing a miscible material containing a polymer selected from the group consisting of a silicone polymer, an acrylic polymer and a urethane polymer, and powderized graphite wherein said graphite comprises particles ranging in size from about 3 to about 7 microns.

Claim 15

The process of claim 4, including the step of solidifying the resulting mixture.

Claim 16

The process of claim 6 including the step of curing the solidifiable material.

Claim 17

A surgical process for connecting an artificial tubular graft to a natural tubular member, the process comprising, inserting the artificial tubular graft through an opening in a cylindrical hollow tie ring so that part of the artificial graft extends beyond the opening, folding back the extending part of the artificial graft over an outwardly extending front edge of the tie ring into a first recess between the front edge and a flange extending exteriorly from the middle of the tie ring, securing the folded back portion of the artificial graft in the first recess, introducing the artificial-graft-tie-ring structure into the natural tubular member so that the natural tubular member covers the first recess and extends beyond it into a second recess formed between the flange and an upwardly extending rear edge of the tie ring, and securing the natural tubular member in the second recess.

Claim 18

A surgical process for connecting an artificial tubular graft to a natural tubular member, the process comprising, inserting the artificial tubular graft through an opening in a cylindrical hollow tie ring so that part of the artificial graft extends beyond the opening, folding back the extending part of the artificial graft over an outwardly extending front edge of the tie ring into a first recess between the front edge and a flange extending exteriorly from the middle of the tie ring, securing the folded back portion of the artificial graft in the first recess, introducing the artificial-graft-tie-ring structure into the natural tubular member so that the natural tubular member covers the first recess and extends beyond it into a second recess formed between the flange and an upwardly extending rear edge of the tie ring, and securing the natural tubular member in the second recess.

Claim 19

The process of claim 12 wherein the artificial tubular graft is an arterial graft and the natural tubular member is a bodily artery.

Claim 20

The process of claim 12 wherein the arterial graft is made from the composition of claim 1.

Claim 21

The process of claim 12 wherein the arterial graft is made from the composition of claim 3.

Claim 22

The process of claim 12 wherein a tied suture is used to secure the portions in the first and second recesses.

Claim 23

The process of claim 12 wherein a suture with knots spaced along its length is used to tie the natural tubular member in the second recess.

Claim 24

A tie ring for connecting a tubular graft to a natural tubular member, the tie ring comprising a hollow cylindrical body member having outwardly extending edges formed integrally at each end thereof and an outwardly extending flange formed integrally thereof between the two edges.

Claim 25

A tie ring for connecting a tubular graft to a natural tubular member, the tie ring comprising a hollow cylindrical body member having outwardly extending edges formed integrally at each end thereof and an outwardly extending flange formed integrally thereof between the two edges.

Claim 26

The tie ring of claim 18 formed of the composition of claim 1.

Claim 27

The tie ring of claim 18 formed of the composition of claim 3.

Claim 28

An anti-thrombogenic composition comprising, a homogeneous mixture of a miscible solidifiable material selected from the group consisting of silicone, urethane and acrylic, and powderized graphite particles ranging in size from about 3 to about 7 microns.

Claim 29

An anti-thrombogenic composition comprising, a homogeneous mixture of a miscible solidifiable material selected from the group consisting of silicone, urethane and acrylic, and powderized graphite particles ranging in size from about 3 to about 7 microns.

Claim 30

The composition of claim 1 wherein said solidifiable material comprises at least two materials selected from the group consisting of a silicone polymer, a urethane polymer and an acrylic polymer.

Claim 31

An object made from the composition of any one of claims 1, 2, 3, 4-11, 21 or 22.

Claim 32

The object of claim 23 wherein said object is a prosthetic device.

Claim 33

The object of claim 23 wherein said object is a tubular arterial graft.

Claim 34

The object of claim 23 wherein said object is a bladder.