| 摘要 |
<p>A tendon stripper for excision of a tendon through a single skin incision comprises a head (6) containing a rotary knife (7) which can be placed around and slid along a tendon in the surrounding sheath. The tendon must be severed at the site of transition with the muscle. To this end, the tendon stripper comprises a cylindrical head (6) and a cylindrical knife (7), both of which have a lateral opening (15 and 18 respectively) through which a tendon introduced through the central opening (17) can emerge laterally from the knife (7) and the head (6). A first cutting edge (18a), together with the opposite edge of the opening (15) in the head (6), forms a tendon-severing device when the knife (7) is rotated relative to the head (6). A second cutting edge (20) of the knife (7), which extends around the entire periphery of the latter, forms a frontal cutting device which serves to extract the tendon in the sheath amongst others from the tendinaculi and to detach it at its end from the muscle. An adjusting ring (13) makes it possible to obtain different operating positions of the tendon stripper which differ in respect of the different limits of the rotational movements of the knife (6) and of the relative displacement of these rotational movements. In this way, tendons can be extracted from their sheaths and severed from their muscles easily and reliably, without risk of damage to the tendons.</p> |
