Percutaneous instrument with collet locking mechanisms

摘要

A surgical device comprises an elongate shaft comprising an outer tube and an inner rod positioned in the outer tube, the outer tube and inner rod each comprising a distal end and a proximal end. An actuator is operably connected to the proximal ends of the outer tube and the inner rod. An end effector is adapted for in vivo attachment to and detachment from the distal ends of the outer tube and the inner rod, the end effector comprising a collet for locking engagement with the distal end of the inner rod. The end effector may further comprise a second collet for locking engagement with the outer tube. The surgical device may further comprise a loader comprising a collet for locking the end effector in the loader.

主权项

1. A surgical device, comprising:
a) an elongate shaft comprising a distal end and a proximal end; b) an actuator operably connected to the proximal end of the elongate shaft; c) an end effector adapted for attachment to and detachment from the distal end of the elongate shaft, the end effector comprising:
i) a laterally deflecting arm dimensioned to engage at least a portion of the distal end of the elongate shaft;ii) a ring comprising a first axial position and a second axial position, wherein in the first position the arm can deflect laterally and in the second position the ring circumscribes the arm and constrains the arm from deflecting laterally; andiii) a spring biasing the ring to the second position.