| 摘要 |
A valve (1) comprises an outer ring (5,6) and a sealing sleeve (7) of flexible material mounted to the ring (5,6) and extending into the opening defined by the ring to terminate in a substantially centrally disposed inlet opening (8). Through the opening (8) a member such as a trocar (3) or surgical instrument may be passed. The sealing sleeve (7) remains in sealing engagement with the member (3) as it is passed therethrough. <IMAGE> |
