Multifunctional connector and endoscopic treatment instrument having the same

An endoscopic treatment instrument having a multifunctional connector comprising:

• an auxiliary conduit which is branched from a main conduit of which a cannula is coupled to one end and has a guide portion;
• an operation member which includes an intubation portion provided to be insertable into the auxiliary conduit, a sliding guide provided to be spaced apart from the intubation portion and formed to move forward and backward while being guided by the guide portion, a fixing cap fixing the sliding guide so as not to be separated from the guide portion, and a first port through which a fluid is injected or discharged and is provided detachably from the auxiliary conduit;
• a syringe provided detachably from the auxiliary conduit and storing a cleaning liquid;
• and
• a liquid delivery tube of which one end is connected to the intubation portion and the other end is coupled to a hollow needle,
• wherein one of the operation member and the syringe is selected to be coupled to the auxiliary conduit,
• when the operation member is coupled to the auxiliary conduit, at least a portion of the liquid delivery tube is located inside the auxiliary conduit, the main conduit, and the cannula, wherein as the operation member moves forward, the hollow needle moves forward so that the hollow needle protrudes to the outside of the cannula, and as the operation member moves backward, the hollow needle moves backward so that the hollow needle is introduced into the cannula,
• when the syringe is coupled to the auxiliary conduit to inject the cleaning liquid, the cleaning liquid may be injected through the auxiliary conduit and the cannula.

An endoscopic treatment instrument having a multifunctional connector which is coupled to a liquid delivery tube, wherein the multifunctional connector comprises

• an auxiliary conduit which is branched from a main conduit and has a guide portion;
• and
• an operation member provided detachably from the auxiliary conduit,
• wherein the operation member comprises
• an intubation portion inserted into the auxiliary conduit;
• a sliding guide formed to move forward and backward while being guided by the guide portion;
• a fixing cap fixing the sliding guide so as not to be separated from the guide portion, and
• a first port through which a fluid is injected or discharged,
• wherein the cannula is coupled to one end of the main conduit,
• one end of the liquid delivery tube is coupled to the intubation portion and a hollow needle is coupled to the other end of the liquid delivery tube,
• at least a portion of the liquid delivery tube is located inside the auxiliary conduit, the main conduit, and the cannula,
• wherein as the operation member moves forward, the hollow needle moves forward so that the hollow needle protrudes to the outside of the cannula, and
• as the operation member moves backward, the hollow needle moves backward so that the hollow needle is introduced into the cannula.