| 摘要 |
A medical instrument, comprising an elongated shaft having a distal end and a proximal end; a movable tool disposed at said distal end of said shaft; a handle disposed at said proximal end of said shaft; a force transmitting element extending along said shaft and movable in a first and an opposite second movement direction, said force transmitting element being operatively interconnected between said tool and said handle for converting a movement of said handle into a movement of said tool. Steplessly acting locking means coact with said force transmitting element for steplessly locking the movement of said force transmitting element in said first movement direction, whereas said locking means allow free movement of said force transmitting element in said opposite second movement direction.
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