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发明公开
CN108289691A 具有二自由度腕部的推拉式缝合器 有权

具有二自由度腕部的推拉式缝合器
摘要：
提供了一种外科手术器械，其包括：第一钳口，其具有远侧端部和近侧端部，其中第一钳口的近侧端部附接到杠杆臂，该杠杆臂包括具有近侧部分和远侧部分的杠杆凸轮槽；第二钳口，其具有远侧端部和近侧端部，其中第二钳口的近侧端部固定到基部，该基部包括与第二钳口轴线的纵向轴线对齐并且具有近侧部分和远侧部分的线性凸轮槽；枢轴，其将第一钳口可旋转地安装到第二钳口，其中枢转轴线在第一钳口和杠杆臂之间延伸；凸轮销，其经配置以延伸穿过并且接合杠杆凸轮槽和线性凸轮槽；线性驱动构件，其可操作地耦连以驱动凸轮销从而跟随线性凸轮槽；其中凸轮销在杠杆臂上施加杠杆力，该杠杆力在凸轮销接触杠杆凸轮槽的远侧部分时使第一钳口远离第二钳口旋转，并且其中凸轮销在杠杆臂上施加杠杆力，该杠杆力在凸轮销接触杠杆凸轮槽的近侧端部部分时使第一钳口朝向第二钳口旋转。
摘要（英）：

A surgical instrument is provided comprising: a first jaw having a distal end and a proximal end wherein the proximal end of the first jaw is attached to a lever arm that includes a levering cam slothaving a proximal portion and a distal portion; a second jaw having a distal end and a proximal end wherein the proximal end of the second jaw is secured to a base that includes a linear cam slot aligned with a longitudinal axis of the second jaw axis and having a proximal portion and a distal portion; a pivot rotatably mounting the first jaw to the second jaw, wherein a pivot axis extends betweenthe first jaw and the lever arm; a cam pin configured to extend through and engage the levering cam slot and the linear cam slot; a linear drive member operatively coupled to drive the cam pin to follow the linear cam slot; wherein the cam pin imparts a lever force upon the lever arm that rotates the first jaw away from the second jaw when the cam pin contacts the distal portion of the levering cam slot and wherein the cam pin imparts a lever force upon the lever arm that rotates the first jaw toward the second jaw when the cam pin contacts the proximal end portion of the levering cam slot

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