Patent JPS60178422A successfully refreshed from Google Patents.
Patent US4244365A successfully refreshed from Google Patents.
EP0587461A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Artificial blood vessel
Assignee: Terumo Corp
•
Filing: 1993-06-14
•
Granted: —
•
Expires: 2013-06-14
Abstract
Abstract An artificial blood vessel is provided which retains elasticity resembling that of a vital blood vessel, avoids being collapsed or bent under an external pressure, and allows easy suturing with a needle. The artificial blood vessel is so constructed that an artificial blood vessel body thereof and a reinforeing part deposited on the artificial blood vessel body are both made of an elastic material. The artificial blood vessel can be manufactured so as to excel in résistance to collapsing and kinking, in compliance, and in operability.
Inventors
- 👤 Hirofumi c/o Terumo Kabushiki Kaisha Nagai
- 👤 Yuki c/o Terumo Kabushiki Kaisha Kobarai
- 👤 Makoto c/o Terumo Kabushiki Kaisha Takahashi
- 👤 Yuzo c/o Terumo Kabushiki Kaisha Ezaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 17:59
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/50; A61L27/507; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61L27/14; A61L27/18; A61L27/26; C; C08; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
28 words
An artificial blood vessel characterized in that an artificial blood vessel body and a helical reinforcing part deposited on said artificial blood vessel body are both elastic materials.
Claim 2
Dependent Claim
28 words
An artificial blood vessel characterized in that an artificial blood vessel body and a helical reinforcing part deposited on said artificial blood vessel body are both elastic materials.
Claim 3
Dependent Claim
24 words
An artificial blood vessel according to claim 1, wherein the material for said reinforcing part of said artificial blood vessel is an olefinic elastomer.
Claim 4
Dependent Claim
34 words
An artificial blood vessel according to claim 1, wherein said artificial blood vessel body is constructed in a tubular shape by subjecting fibers to one or more of the weaving, knitting, and braiding treatments.
Claim 5
Dependent Claim
31 words
An artificial blood vessel according to claim 1, wherein the fiber of said elastic material is a polyester elastic fiber or a composite fiber comprising a polyester elastomer and polyethylene terephthalate.
Claim 6
Dependent Claim
16 words
An artificial blood vessel according to claim 3, wherein said elastic material is a rubbery elastomer.
Claim 7
Dependent Claim
51 words
An artificial blood vessel according to claim 5, wherein said rubbery elastomer is at least one member selected from the group consisting of ethylene-propylene copolymer, polyurethane, nitrile rubber, chlorinated polyisoprene, acryl rubber, butyl rubber, ethylene-vinyl acetate elastomer, butadiene type elastomer, amide elastomer, ester elastomer, urethane elastomer, a-olefinic elastomer, and styrene elastomer.
Claim 8
Dependent Claim
32 words
An artificial blood vessel according to claim 1, wherein the ratio of elongation required for the ratio of recovery of elasticity from elongation to remain below 90% is not less than 2%.
Claim 9
Dependent Claim
23 words
An artificial blood vessel according to claim 3, wherein the thickness of said fiber is in the range of 10 to 100 deniers.
Claim 10
Dependent Claim
31 words
An artificial blood vessel according to claim 4, wherein said composite fiber has two components, i.e. polyethylene terephthalate and a polyester elastomer, joined face to face as applied to each other.
Claim 11
Dependent Claim
32 words
An artificial blood vessel according to claim 9, wherein said polyester type elastomer is at least one member selected from the group consisting of polybutylene terephthalate, polyester-polyether block copolymer, and polyester-polyester copolymer.
Claim 12
Dependent Claim
32 words
An artificial blood vessel according to claim 9, wherein the mixing ratio of said polyethylene terephthalate to said polyester elastomer is in the range of 20 : 80 to 80 : 20.
Claim 13
Dependent Claim
35 words
An artificial blood vessel according to claim 1, wherein the ratio of elongation in the radial direction is in the range of 2 to 15% under the load of an inner pressure of 150 mmHg.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.