申请人:Ethicon Endo-Surgery, LLC
公开号:EP3162384A1
公开(公告)日:2017-05-03
A buttress assembly is configured to temporarily adhere to a wet surgical stapler end effector. The buttress assembly includes a buttress body and a humidity tolerant adhesive. The adhesive includes a bioabsorbable polymer having a block configuration selected from the group consisting of A-B-A and A-B-C. The A block is a bioabsorbable homopolymer that may be characterized by a glass transition temperature of at least about 0°C, a crystallinity as measured by X-ray diffraction of at least about 30%, and a melting temperature of at least about 50°C. The B block is a bioabsorbable homopolymer or co-polymer that may be characterized by a glass transition temperature of at least about -40°C, a crystallinity as measured by X-ray diffraction of at most about 25%, and a molecular weight of from about 20 to about 80kDa. The C block is a bioabsorbable hydrophilic homopolymer or co-polymer that may be miscible with water at 37°C.
托架组件用于临时粘附到湿手术订书机末端效应器上。支撑组件包括支撑体和耐湿粘合剂。粘合剂包括一种生物可吸收聚合物,其嵌段结构选自 A-B-A 和 A-B-C。A 嵌段是一种生物可吸收均聚物,其玻璃化转变温度至少约为 0°C,X 射线衍射测定的结晶度至少约为 30%,熔化温度至少约为 50°C。B 嵌段是一种生物可吸收均聚物或共聚物,其特征是玻璃化转变温度至少约为 -40°C,X 射线衍射测定的结晶度至少约为 25%,分子量约为 20 至 80kDa。C 嵌段是一种可生物吸收的亲水性均聚物或共聚物,在 37°C 时可与水混溶。