Rotary control device for medical apparatus, has cam whose cam path comprises profile that is adapted to vary rotation force required for rotating shaft on sector of angular displacement with respect to angular position of shaft

摘要

The device has a shaft (18) with an axis (A) vertically and rotably mounted on supports (16A-16C). The shaft is manually rotated between two angular end positions. A follower (62) of a cam is forced toward the cam, where the movement of the follower is caused along a cam path of the cam by rotation of the shaft. The cam path of the cam comprises a profile that is adapted to vary the rotation force required for rotating the shaft on a sector of angular displacement with respect to the angular position of the shaft.