| 摘要 |
<p>The invention is a hingeless tool (1) including an inner member, an intermediate member (5) surrounding the inner member (2) and an optional outer member (6) surrounding the intermediate member (5). The outer member (6) can be a sheath fixedly or removably connected to a handle and the intermediate member (5) is slidable axially in the sheath (6). The inner member includes a pair of hingeless spaced-apart jaws (3, 4) forming a unitary piece at a distal end thereof and a proximal end of the inner member is attached to a stationary part of the handle. The intermediate member (5) is an axially slidable tube and the proximal end of the tube is connected to a movable part of the handle. The stationary and movable parts of the handle are connected in a hingeless manner by a flexible part of the handle. The distal end of the tube slides over a portion of the jaws to elastically deform the jaws towards each. Thus, by moving the movable part of the handle, the intermediate member can be moved axially to press the jaws towards each other without axial movement of the jaws. The inner member can be provided in two parts which are detachably connected together. Thus, the working end of the inner member having various types of jaw configurations can be interchangeably used with the tool. For instance, the jaws can be designed to be used as graspers, scissors, or a needle driver useful in endoscopic surgery.</p> |
