| 摘要 |
The present invention relates to an actuation grip 1 for a microsurgical instrument having an inner shank 16 axially movable relative to an outer shank 15. Two grip parts 11, each with two ends 111, 112, are coupled pivotably at a proximal end 1' of the actuation grip 1. Each grip part 11 is articulated to a first lever pair 12 between the ends of the grip part 11. The first levers 12 are coupled rotatably at an intersection pin 124, and their ends 121, 123 are also connected rotatably to the ends of a second lever pair 13, the second levers being coupled to each other at the other end at common pin 14. Pin 14 is attached to a shank wall, preferably the inner shank. A double scissor hinge or parallelogram linkage is thus formed, which serves to move the two shanks 15, 16 relative to each other when the handles are actuated. Rollers (125, see figure 3) may be mounted on the protruding ends of pin 124 and restrained within slot 161 in the inner shank. The actuator may be locked in a particular position using lock 17. |
