Patent ID: 7476237
Filing Date: 2009-01-13
Classification: A61B

Abstract:
1. A surgical instrument comprising: a tubular member having a distal end and a proximal end, for forming an axis; a partition member disposed in the tubular member in a direction along the axis of the tubular member, for partitioning the inside of the tubular member; a first shaft disposed in a first channel formed by the partition member such that the first shaft can move in both forward and backward directions; a second shaft disposed in a second channel formed by the partition member such that the second shaft can move in both forward and backward directions; an end effector including a pair of jaws; a base member connected to the second shaft, for supporting the end effector; a supporting pin for pivotably supporting the base member to mount the end effector on the distal end of the tubular member; a first connection member connected to the jaws, the first connection member being movable in both forward and backward directions in the base member to open and close the jaws; a second connection member for connecting the first connection member with the first shaft, the second connection member being movable through a joint formed by the supporting pin, and including a first insertion hole for receiving a first connection pin for connection with the first connection member and a second insertion hole for receiving a second connection pin for connection with the first shaft; and the second connection member being movable between a location at which the supporting pin and the first insertion hole are coincident with each other and a location at which the supporting pin and the second insertion hole are coincident with each other; a first operation control portion connected to the first shaft, for manipulating the end effector via the first shaft; and a second operation control portion connected with a proximal end of the second shaft, the second operation control portion moving the second shaft in both forward and backward directions to control the angle of the joint.