申请人:Yoshimura Tetsuji
公开号:US20070282093A1
公开(公告)日:2007-12-06
The present invention has its object to provide a medical adhesive excellent in safety, reactivity (curing rate) and duration of adhesive strength.
A medical adhesive of the present invention comprises a hydrophilic urethane prepolymer (UP) obtained by reacting a fluorine-containing nonaromatic polyisocyanate component (A) and a polyol component (B) having a hydrophilic polyol (B
1
) as the essential component, and a phenolic radical scavenger (PRS). The content of (PRS) is preferably 0.01 to 3% by weight based on the weight of (UP). The content of oxyethylene groups in (B) is preferably 30 to 100% by weight based on the weight of the oxyalkylene groups in (B). Preferably, (B) is a mixture of a random copolymer obtained by addition of ethylene oxide and propylene oxide to diols and polypropylene glycol. The content of isocyanate groups in the medical adhesive is 1 to 10% by weight based on the weight of (UP). The medical adhesive of the present invention is suitable for bonding body tissues, such as lung, artery and heart in particular.
本发明的目的是提供一种在安全性、反应性(固化速率)和粘接强度持续时间方面具有优异性能的医用粘合剂。本发明的医用粘合剂包括通过反应含氟非芳香族多异氰酸酯组分(A)和具有亲水性多元醇(B1)作为基本组分的多元醇组分(B)获得的亲水性聚氨酯预聚物(UP)和酚类自由基清除剂(PRS)。根据(UP)的重量,(PRS)的含量优选为0.01至3重量%。根据(B)中氧乙烯基团的重量,氧乙烯基团的含量优选为30至100重量%。优选地,(B)是通过将环氧丙烷和丙烯酸酯添加到双醇和聚丙烯醇中获得的随机共聚物的混合物。医用粘合剂中异氰酸酯基团的含量根据(UP)的重量为1至10重量%。本发明的医用粘合剂特别适用于粘接肺、动脉和心脏等体内组织。