| 摘要 |
An anal retractor includes four retractor valves ( 48 ), which are offset 90° relative to each other and can be moved radially apart from each other. For this the four retractor valves ( 48 ) are guided by sleds ( 30 ) in radial guide slots ( 14 ) of a base plate ( 10 ). For movement of the sleds ( 30 ) guide bolts ( 36 ) extend through the radial guide slots ( 14 ) of the base plate ( 10 ) and spiral shaped actuating slots ( 24 ) of a rotor plate ( 20 ), which is rotatable relative to the base plate ( 10 ).
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