Abstract An artificial vessel, wherein the vessel wall is made of an elastomer having a porous structure and the vessel has a porosity percentage of from 95 to 75 %, especially, an artificial vessel, wherein the porosity percentage at the thickness of at least 30 µm from the inner surface of the vessel wall is from 95 to 80 %, and the porosity percentage at the rest of the thickness of at least 30 µm from the inner surface of the vessel wall is smaller than that at the thickness of at least 30 µm from the inner surface of the vessel wall. The artificial vessel may also be reinforced with tubular material made of fiber or with heat-set tubular material made of fiber. The artificial vessel of the present invention has a porosity, a compliance approximate to that of a vital vessel, and a contact surface with blood having an excellent blood compatibility.
An artificial vessel, wherein the vessel wall is made of an elastomer having a porous structure and the vessel has a porosity percentage of from 95 to 75 %.
Claim 2
Dependent Claim
29 words
An artificial vessel, wherein the vessel wall is made of an elastomer having a porous structure and the vessel has a porosity percentage of from 95 to 75 %.
Claim 3
Dependent Claim
75 words
The artificial vessel of Claim l, wherein the porosity percentage at the thickness of at least 30 µm from the inner surface of the vessel wall is from 95 to 80 %, and the porosity percentage at the rest of the thickness of at least 30 µm from the inner surface of the vessel wall is smaller than that at the thickness of at least 30 µm from the inner surface of the vessel wall.
Claim 4
Dependent Claim
17 words
The artificial vessel of Claim l, wherein the vessel is reinforced with tubular material made of fiber.
Claim 5
Dependent Claim
18 words
The artificial vessel of Claim l, wherein the vessel is reinforced with heat-set tubular material made of fiber.