Patent ID: 8771266

Claim:
A method for performing transurethral prostate resectioning using a device which is used in combination with a scope configured to observe a body cavity, the device comprising: a hollow insertion section which is configured to be inserted in the body cavity; a treatment portion which is configured to be inserted into the hollow insertion section; and an operation section which is configured to reciprocally move the treatment portion along a central axis of the hollow insertion section; wherein the treatment portion comprises: an active electrode section with a first loop-shaped portion at a distal end thereof, both ends of the first loop-shaped portion being respectively connected to the distal end portion thereof, and a detachment portion including a compression section with a second loop-shaped portion at a distal end thereof, both ends of the second loop-shaped portion being respectively connected to the distal end portion thereof; the method comprising the steps of: inserting the hollow insertion section into the body cavity leading to the prostate; inserting through the hollow insertion section the active electrode section operable with a high frequency current, and the compression section that is configured to contact the prostate and to detach the prostate; incising a part of the prostate with the active electrode section being pressed on the part of the prostate by applying the high-frequency current to the part of the prostate; ceasing the application of the high-frequency current to the part of the prostate after incising the part of the prostate; contacting the compression section with the incised portion of the prostate; pressing the compression section to the incised portion of the prostate, with the compression section being extended to a position in front of the active electrode section; and pushing out the compression section and detaching a detached portion including the incised portion of the prostate.