US 12,246,112 B2
Artificial blood vessel
Akira Miyama, Tokyo (JP); and Mutsumi Matsumoto, Tokyo (JP)
Assigned to DENKA COMPANY LIMITED, Tokyo (JP)
Appl. No. 17/284,023
Filed by DENKA COMPANY LIMITED, Tokyo (JP)
PCT Filed Oct. 25, 2019, PCT No. PCT/JP2019/041851
§ 371(c)(1), (2) Date Apr. 9, 2021,
PCT Pub. No. WO2020/095713, PCT Pub. Date May 14, 2020.
Claims priority of application No. 2018-210480 (JP), filed on Nov. 8, 2018.
Prior Publication US 2021/0330865 A1, Oct. 28, 2021
Int. Cl. A61L 27/50 (2006.01); A61L 27/16 (2006.01); A61L 27/34 (2006.01); A61L 27/48 (2006.01); B32B 1/08 (2006.01); C08L 53/00 (2006.01)
CPC A61L 27/507 (2013.01) [A61L 27/16 (2013.01); A61L 27/34 (2013.01); A61L 27/48 (2013.01); B32B 1/08 (2013.01); C08L 53/005 (2013.01); C08L 2203/02 (2013.01); C08L 2205/06 (2013.01); C08L 2207/322 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An artificial blood vessel comprising:
a first layer formed using a resin composition I, the resin composition I comprising:
100 parts by mass of a component (A) hydrogenated block copolymer;
300 parts by mass or more and 1000 parts by mass or less of a component (B) oil; and
0.1 parts by mass or more and 150 parts by mass or less of a component (C) lubricant;
a second layer formed on an exterior of the first layer using a resin composition II, the resin composition II being free of the component (C) lubricant and comprising:
100 parts by mass of the component (A) hydrogenated block copolymer; and
50 parts by mass or more and 1000 parts by mass or less of the component (B) oil; and
a third layer formed on an interior of the first layer using a resin composition III, the resin composition III being free of the component (C) lubricant and comprising:
100 parts by mass of the component (A) hydrogenated block copolymer; and
50 parts by mass or more and 1000 parts by mass or less of the component (B) oil,
wherein:
the component (A) hydrogenated block copolymer contains one or more hydrogenated products of an aromatic vinyl-conjugated diene block copolymer containing a block unit derived from an aromatic vinyl and a block unit derived from a conjugated diene, and
a content of the block unit derived from an aromatic vinyl in the aromatic vinyl-conjugated diene block copolymer is 5 mass % or more and 50 mass % or less.