Patent ID: 8016840

Claim:
A treatment device which is used together with an endoscope to perform treatment in a body by being operated outside the body, comprising: a transmission member with a flexible structure which has a distal end portion inserted into a body and is capable of being operated outside of the body; a push rod coupled to the distal end portion of the transmission member; first and second connecting members coupled to the push rod, each of the first and second connecting members having a distal end portion and a proximal end portion rotatably coupled to the push rod; first and second arm members each having a distal end portion and a proximal end portion rotatably coupled to the distal end portion of a corresponding one of the first and second connecting members; a holding member which rotatably holds the distal end portions of the first and second arm members; first and second actuating members which are integrally formed with the distal end portions of the first and second arm members and are able to open/close when the transmission member actuates the first and second connecting members and the first and second arm members through the push rod; a needle which is mounted at the first actuating member and is used to puncture a tissue; a thread mounted on the needle; a recovery member capable of recovering the needle; and a through-hole which is formed at the second actuating member and moves on the same track as the needle, and through which the thread and the needle can pass.