US 11,931,479 B2
Artificial blood vessel
Goki Matsumura, Tokyo (JP); Hideki Sato, Kyoto (JP); and Mieko Ishikawa, Kyoto (JP)
Assigned to GUNZE LIMITED, Kyoto (JP)
Filed by GUNZE LIMITED, Ayabe (JP)
Filed on Oct. 6, 2020, as Appl. No. 17/064,082.
Claims priority of application No. 2019-200733 (JP), filed on Nov. 5, 2019.
Prior Publication US 2021/0128788 A1, May 6, 2021
Int. Cl. A61L 27/50 (2006.01); A61L 27/18 (2006.01); A61L 27/56 (2006.01); A61L 27/58 (2006.01); D02G 3/04 (2006.01); D02G 3/38 (2006.01); D02G 3/44 (2006.01)
CPC A61L 27/507 (2013.01) [A61L 27/18 (2013.01); A61L 27/56 (2013.01); A61L 27/58 (2013.01); D02G 3/045 (2013.01); D02G 3/38 (2013.01); D02G 3/448 (2013.01)] 2 Claims
OG exemplary drawing
 
1. An artificial blood vessel having a tubular shape, comprising:
a foam containing a bioabsorbable material;
a reinforcement A containing a bioabsorbable material; and
a reinforcement B including threads containing a bioabsorbable material,
the foam being reinforced with the reinforcements A and B,
wherein the reinforcement A is a non-woven fabric, a film, or a weft-knitted, warp-knitted, or woven fabric made of knitted or woven fibers,
the reinforcement B includes monofilament threads each having a cross-sectional diameter of 0.1 mm or more and 1 mm or less,
the reinforcement B includes a winding portion having a helical shape, a ring shape, or an X shape and a warp thread portion stretched in a direction parallel to a longitudinal direction of the artificial blood vessel, and
the artificial blood vessel is a composite including the reinforcement A and reinforcement B inside the foam,
wherein the winding portion includes a pair of helical threads containing a bioabsorbable material and combined to have opposite winding directions, and
an intersection of the threads is tied with a thread constituting the warp thread portion.