Patent ID: 8863748

Claim:
An endoscopic surgical operation method comprising: providing an endoscope, the endoscope having on its distal end a device, the device having a first body having a curved first surface and a second body having a second surface opposing the first surface, the first surface and the second surface defining a space therebetween for introduction of tissue, the space extending from a bottom of the device towards a top of the device; providing a lift instrument; advancing the lift instrument along the endoscope and the first surface to dispose the lift instrument to be opposed to a living tissue in the vicinity of a diseased tissue, wherein the first surface deflects the lift instrument towards the living tissue during the advancing; grasping the living tissue using the lift instrument; lifting the living tissue grasped by the lift instrument and drawing the living tissue and the diseased tissue into the space; narrowing the space while the living tissue is in the space thereby causing contact between a proximal region and a distal region of the living tissue located in the space over an entirety of the living tissue within the space; suturing the proximal region and the distal region of the living tissue positioned basal relative to the diseased tissue using a suturing means after the narrowing and the causing contact, thereby forming sutured regions that surround the diseased tissue; and resecting the living tissue between the sutured regions and the diseased tissue endoscopically after the suturing so as to surround the diseased tissue with the resecting.