| 摘要 |
<p>A surgical instrument (10) having a protective distal insert (30) is provided. The instrument generally comprises a tubular member (14) containing a push rod (18), which is axially movable within the tubular member (14) by means of a proximal actuation handle (12). The tubular member (14) is provided with a clevis (28) at a distal end. End effectors (36a, 36b) provided with proximal tanks and cutting or gripping portions, are coupled to the clevis (28) and are further coupled to the push rod (18) at the proximal tangs (40a, 40b), such that axial movement of the push rod (18) is translated into rotational movement of the end effectors (36a, 36b). Between the arms (45a, 45b) of the clevis of protective insert (30) is provided. The protective insert (30) is a relatively thin and elongate U-shaped member of nylon, PTFE, or polyolefin, having a central portion (54) provided with a central hole (58), and two arm portions (45a, 45b). The push rod (18) extends through the central hole (58).</p> |
