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.
申请公布号
US8070770(B2)
申请公布日期
2011.12.06
申请号
US20070677809
申请日期
2007.02.22
申请人
BECKMAN ANDREW T.;MINNELLI PATRICK J.;NGUYEN ANTHONY T.;BAXTER, III CHESTER O.;D'ARCANGELO MICHELE;ETHICON ENDO-SURGERY, INC.
发明人
BECKMAN ANDREW T.;MINNELLI PATRICK J.;NGUYEN ANTHONY T.;BAXTER, III CHESTER O.;D'ARCANGELO MICHELE