Endoscopic treatment device and endoscopic treatment method
A treatment device and an endoscopic treatment method are disclosed. The treatment device includes a first pipeline that is made of material having electrical insulation, and includes an internal space; an electrode that is energizable with high frequency current; a distal-end tip that is attached to a distal end of the first pipeline, and includes a distal-end opening in communication with the internal space of the first pipeline; and a second pipeline that is inserted through the first pipeline and through which liquid can pass. The endoscopic treatment method includes puncturing a treatment target and performing a local injection using the treatment device.
1 . A treatment device, comprising:
a pipeline configured to deliver liquid therethrough;
a wire that is inserted through the pipeline, the wire being advanceable and retractable with respect to the pipeline, the wire being a first conductor;
a handle main body located at a proximal end of the pipeline;
a slider attached to the handle main body; and
a second conductor fixed with respect to the handle main body, wherein
a proximal-end portion of the wire and the second conductor are configured to electrically switch between a contact state and a non-contact state in response to movement of the slider with respect to the handle main body.
2 . The treatment device according to claim 1 , further comprising a distal-end tip attached to a distal end of the pipeline, the distal-end tip including a distal-end opening that is in communication with an internal space of the pipeline.
3 . The treatment device according to claim 2 , wherein the distal-end tip includes side openings that are formed in a lateral side of the distal-end tip, and are in communication with the internal space of the pipeline.
4 . The treatment device according to claim 3 , wherein the side openings are slits that are also in communication with the distal-end opening.
5 . The treatment device according to claim 1 , wherein the distal end of the wire is configured to puncture tissue.
6 . The treatment device according to claim 1 , wherein the pipeline is configured to be moved along an axial direction of the pipeline with respect to the wire between: (i) a first position in which a distal end of the pipeline is located distally relative to a distal end of the wire in the axial direction, and (ii) a second position at which the distal end of the pipeline is located proximally relative to the distal end of the wire in the axial direction.
7 . The treatment device according to claim 1 , wherein the slider is connected to the wire in the handle main body.
8 . A treatment device, comprising:
a gas pipeline;
a liquid pipeline;
a wire that is inserted through the liquid pipeline, the wire being advanceable and retractable with respect to the liquid pipeline;
a handle main body that is attached to a proximal end of the gas pipeline;
a slider attached to the handle main body, the slider being connected to the wire in the handle main body; and
a conductor that is fixed with respect to the handle main body, wherein
a proximal-end portion of the wire and the conductor are configured to electrically switch between a contact state and a non-contact state in response to a movement of the slider with respect to the handle main body.
9 . The treatment device according to claim 8 , further comprising a distal-end tip attached to a distal end of the gas pipeline, the distal-end tip including a distal-end opening that is in communication with an internal space of the gas pipeline.
10 . The treatment device according to claim 9 , wherein the distal-end tip includes side openings that are formed in a lateral side of the distal-end tip, and are in communication with the internal space of the gas pipeline.
11 . The treatment device according to claim 10 , wherein the side openings are slits that are in communication with the distal-end opening.
12 . The treatment device according to claim 8 , wherein the distal end of the wire is configured to puncture tissue.
13 . The treatment device according to claim 8 , wherein the liquid pipeline is configured to be moved along an axial direction of the gas pipeline with respect to the gas pipeline between: (i) a first position in which a distal end of the liquid pipeline is located distally relative to a distal-end opening of the gas pipeline in the axial direction of the gas pipeline, and (ii) a second position at which the distal end of the liquid pipeline is located proximally relative to the distal-end opening in the axial direction.
14 . The treatment device according to claim 8 , wherein the wire is a conductor.