| 摘要 |
The surgical instrument for tensioning a cable-like, a band-like or a cord-like tensioning element (5) comprises a manually actuatable lever system. Two levers (1, 2)-the first and the second actuation lever-are jointedly connected by a third lever (3). In a basic position of the system the tensioning element can be laid into a laying-in opening (15) of the first lever and into a clamping gap (32) at the second and at the third lever. One of the actuation levers (2) is formed in one section as a beam (20', 21') which is elastic in bending. The extent of a shape change of the beam can be measured. A relationship between this shape change and a tension in the tensioning element is known. The tension can be set as a result of this knowledge and of a measurement (209, 211; 8) of the shape change, or a means a tension monitor or sensor, serving for the same purpose is provided for determining a torque which acts at the corresponding actuation lever (2). |
