Endoscopic treatment instrument, endoscopic treatment system and supporting adaptor

An endoscopic treatment system comprising:

• an endoscope having an endoscope insertion part for carrying out a treatment for living organisms;
• and
• an endoscopic treatment instrument comprising:
• a plurality of elongated flexible sheaths;
• an operating part provided at a proximal portion of each of the plurality of flexible elongated sheaths;
• a distal end treatment unit provided at a distal portion of each of the plurality of flexible elongated sheaths for carrying out a treatment for living organisms;
• a supporting member for directly or indirectly supporting the plurality of flexible elongated sheaths disposed substantially in parallel with the endoscope insertion part for constraining a relative position of the plurality of flexible elongated sheaths;
• and
• a connecting member for directly or indirectly connecting the sheaths and the endoscope insertion part;
• wherein arrangement of the plurality of sheaths with respect to the endoscope insertion part can be changed by changing a connecting state of the connecting member;
• wherein the endoscope insertion part comprises a fixing device for engaging the connecting member.

A supporting adaptor for a plurality of endoscopic treatment instruments, the supporting adaptor comprising:

• a supporting member for directly or indirectly supporting distal ends of a plurality of sheaths corresponding to the plurality of endoscopic treatment instruments for fixing a relative position of the distal ends of the plurality of sheaths;
• and
• a connecting member for directly or indirectly connecting the plurality of sheaths and a distal end of an endoscope so as to be capable of changing a connecting state;
• wherein an operator can change a relative position between the distal ends of the plurality of sheaths and the distal end of the endoscope by changing the connecting state of the connecting member.