An endoscopic treatment device is used with an endoscope. This treatment
device includes a transmission member with a flexible structure having a
distal end portion to be inserted into a body and can be operated outside
the body, a push rod coupled to the distal end portion, and first and
second connecting members rotatably coupled to the push rod. The
treatment device further includes first and second arm members rotatably
coupled to the distal end portion of the connecting member, a holding
member rotatably holding the respective arm at a predetermined interval
therebetween, and first and second actuating members integrally formed
with the arm members and can open/close when the transmission member
actuates the first and second connecting members and the first and second
arm members through the push rod. This device also includes a needle
mounted on at least one of the first and second actuating members.
