申请人:TERUMO KABUSHIKI KAISHA
公开号:EP0769503A2
公开(公告)日:1997-04-23
A heparin complex having anticoagulation activity and being insoluble in blood is provided. The preferred complex comprises a cationic alkyldimethylammonium represented by formula (1):
wherein R1 and R2 are independently an alkyl or alkenyl group, each group is C12-C24 when R1 and R2 are the same, the sum of the carbon atoms are 26-38 when R1 and R2 are different; and heparin. In this complex, reduction in the anticoagulation activity of the heparin by the formation of the complex is minimized, and ionic bonding of the heparin is quite stable. Dissolution of the cationic alkyldimethylammonium from the coating is also minimized. A medical device coated with such substance is also provided.
提供了一种具有抗凝活性且不溶于血液的肝素复合物。优选的复合物包括由式(1)代表的阳离子烷基二甲基铵:
其中 R1 和 R2 独立地为烷基或烯基,当 R1 和 R2 相同时,每个基团为 C12-C24,当 R1 和 R2 不同时,碳原子的总和为 26-38;以及肝素。在这种复合物中,肝素的抗凝活性因形成复合物而降低的程度降到最低,肝素的离子键相当稳定。阳离子烷基二甲基铵从涂层中的溶解也降到了最低。此外,还提供了一种涂有这种物质的医疗器械。