Patent ID: 8021293
Filing Date: 2011-09-20
Classification: A61B

Abstract:
1. A medical treatment endoscope comprising: a flexible sheath having a tip at a distal end thereof, the flexible sheath being capable of a bending operation; a viewing unit for observing the tip farther than the sheath; an arm section protruding from the tip of the sheath, the arm section being capable of bending movement; and an operation stick provided with a slider allowing an operator to carry out an extending and retracting operation for bending the arm section, the operation stick configured to pass a procedure instrument therethrough, wherein the operation stick has a piston capable of protruding into an insertion path of the procedure instrument, and the piston engages with a connection plate attached to the slider along an axis thereof outside the sheath when the procedure instrument is not inserted, the piston fixing the slider at a position where the arm section becomes straightened, and the piston is pushed up by the procedure instrument and allows the slider to advance and retract when the procedure instrument is inserted.