Patent ID: 7727144

Claim:
An endoscopic surgical instrument insertable into and removable from a forceps port of a channel of an endoscope, the endoscopic surgical instrument comprising: an insertion portion at least partially insertable in the channel of the endoscope and comprising as one unit a manipulation tube including a tip at a distal portion thereof, a treatment portion provided at the distal tip of the manipulation tube and fixed thereto, a manipulation wire portion positioned within the manipulation tube and connected to the treatment portion for operating the treatment portion through forward and backward movement of the manipulation wire portion relative to the manipulation tube, and a treatment manipulation portion for operating the treatment portion by moving the manipulation wire portion forward and backward relative to the manipulation tube; and an instrument manipulation portion positioned proximal of the manipulation tube and fixed thereto, the instrument manipulation portion configured to rotate the insertion portion as one unit around in the channel of the endoscope and to cause the forward and backward movement of the insertion portion as one unit relative to the channel of the endoscope, the instrument manipulation portion comprising a mounting mechanism for removably mounting the instrument manipulation portion on the endoscope.