BECKMAN, ANDREW T.,MINNELLI, PATRICK J.,NGUYEN, ANTHONY T.,BAXTER, CHESTER O., III,D'ARCANGELO, MICHELE
申请号：
CA2677449
公开号：
CA2677449C
申请日:
2008.02.19
申请国别(地区):
CA
年份:
2016
代理人:
摘要：
A laparoscopic surgical access device comprises a first frame and a second frame having relative axial positions. A flexible and resilient iris valve is connected to the first and second frames and has a closed position and an opened position based on the relative angular position of the first and second frames. A lock is connected to the first and second frames, the lock being selectively operative to prevent relative rotational movement in a first rotational direction. One embodiment uses a ratchet and pawl mechanism operable with a control ring. Another embodiment uses a ratchet and pawl mechanism operable with a button. Yet another embodiment uses a wedge track and ball mechanism.
