公开(公告)号：US20240139384A1

公开(公告)日：2024-05-02

申请号：US18395795

申请日：2023-12-26

Applicant: Asahi Intecc Co., Ltd.

Inventor： Soichi FUTAMI ,  Yumi TAKATA ,  Shinpei YAMAMOTO

IPC: A61L29/08

CPC classification number: A61L29/085 ,  A61L2400/10 ,  A61L2420/02

Abstract: A coating film on an elongated medical device is composed of a polymeric material that has been crosslinked by a structure given by any of formulas (1) to (3).


—CH(OH)—CH(R1)—O—C(═O)—NH—R2—NH—C(═O)—O—CH(R1)—CH(OH)—  (1)



—CH(OH)—CH(R1)—O—C(═O)—NH—R2—NH—C(═O)—O—CH(CH(R1)—OH)—  (2)



—CH(CH(R1)—OH)—O—C(═O)—NH—R2—NH—C(═O)—O—CH(CH(R1)—OH)—  (3)

公开(公告)号：US20240299631A1

公开(公告)日：2024-09-12

申请号：US18645416

申请日：2024-04-25

Applicant: Asahi Intecc Co., Ltd.

Inventor： Soichi FUTAMI ,  Yumi TAKATA ,  Shinpei YAMAMOTO

IPC: A61L29/08 ,  A61L29/14 ,  A61L31/10 ,  A61L31/14 ,  A61M25/00 ,  A61M25/09

CPC classification number: A61L29/085 ,  A61L29/145 ,  A61L31/10 ,  A61L31/145 ,  A61L2400/10 ,  A61L2420/02 ,  A61M25/0009 ,  A61M2025/0046 ,  A61M2025/09108 ,  A61M2025/09133

Abstract: An elongated medical instrument includes a base instrument and a swollen gel film coating the base instrument. The swollen gel film includes a polymer including a repeating unit with a betaine structure and a repeating unit with a carboxyl group (excluding the repeating unit with the betaine structure). A method of providing an elongated medical instrument includes applying a coating agent to a base instrument, the coating agent including a polymer having a repeating unit with an ester-bonded betaine structure, an organic solvent, and water, and forming a swollen gel film by heating coating and hydrolyzing an ester bond in the polymer.