| 摘要 |
A surgical instrument comprises first and second elongate members which are pivoted together intermediate their ends in crossing relationship, so as to define a major plane of the instrument extending substantially perpendicular to the axis of pivotal movement of the members and in which the members move during relative pivotal movement thereof. Each member has at a forward end an operating portion which cooperates with the operating portion of the other member when the two operating portions are brought together by relative pivotal movement of the two members, and each member has at its opposite, rearward end an actuating portion which can be urged towards the actuating portion of the other member for bringing the operating portions into cooperating disposition. The actuating portion of the first member comprises a generally triangular member for fitting in the palm of the surgeon's hand and having a first side forming a continuation of the first member, a second side connected to the first side at the forward end thereof and extending rearwardly and in a direction away from the actuating portion of the first member, and a third side connecting the rearward ends of the first and second sides. The triangular member defines a plane which is inclined at substantially 50 DEG to 60 DEG to the major plane, and the third side of the triangular member is provided with holding means for engaging at least one of the surgeon's fingers thereby to hold the second member against movement. The actuating portion of the second member comprises a housing for receiving the distal end of the surgeon's thumb when the triangular member is fitted in the surgeon's palm to urge the second member towards or away from the first member.
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