Patent ID: 7182730

Claim:
An anal retractor with retractor valves guided for movement apart, comprising: a base plate ( 10 ) with a central access opening ( 12 ); at least three guide slots ( 14 ) in the base plate ( 10 ) extending radially outside of the opening ( 12 ) and angularly offset relative to each other; retractor valves ( 48 ) radially displaceable in the guide slots ( 14 ), projecting generally perpendicularly from the base plate ( 10 ) in the distal direction; actuating means ( 20 , 24 ) for radial displacement of the retractor valves ( 48 ) in the guide slots ( 14 ); and wherein the actuating means include a rotor plate ( 20 ) lying against the base plate ( 10 ), wherein the base plate ( 10 ) and the rotor plate ( 20 ) are rotatable concentrically relative to each other, wherein the rotor plate ( 20 ) exhibits actuating slots ( 24 ) respectively intersecting the guide slots ( 14 ) of the base plate ( 10 ) and wherein the retractor valves ( 48 ) are displaceable by means of guide bolts ( 36 ) extending through the guide slots ( 14 ) and the actuating slots ( 24 ).