Abstract: An endoscopic treatment device includes a hollow tube; an electrode; and an insulative support member. In a radial direction relative to a longitudinal axis of the hollow tube, the insulative support member is radially outward of the electrode and the hollow tube is radially outward of the insulative support member.

Abstract: An endoscope auxiliary tool includes a first support section which is formed to extend along a longitudinal axis, a second support section which is formed substantially in parallel to the longitudinal axis of the first support section, a first protrusion section and a second protrusion section which are formed at distal end sections of the first support section and the second support section, respectively, and disposed more distal than the distal end section of the endoscope to sandwich an axis of a channel having an opening at the distal end section of the endoscope, and a positioning section which is configured to position the first protrusion section and the second protrusion section with respect to the distal end section of the endoscope such that the first support section and the second support section are inclined to the axis of the channel.

Abstract: An organ model for endoscope includes: a basic shape part formed by imitating a shape of a tubular organ; and a tissue holding part that holds a tissue piece and is detachably provided with respect to the basic shape part. The tissue holding part includes: a main body that is formed in a tubular shape and has a window part communicating with an internal space, on an outer peripheral surface; and a fixing member that fixes the tissue piece on the main body such that at least a portion of the tissue piece overlaps the window part. The main body is rotatable in a circumferential direction of the main body with respect to the basic shape part, in a state where the main body is attached to the basic shape part.

Abstract: A model for an endoscope includes a tissue holding portion including: a first member which has a through hole, which is hard, and which is formed in a frame shape; and a second member which is formed in a sheet shape with a material that is more flexible than the first member and is elastically deformable, which has a window portion that penetrates the second member in a thickness direction of the second member, and which is attached to the first member. A piece of tissue is attached to the second member such that the piece of tissue overlaps the window portion, and the second member is attached to the first member in a state in which the second member is elastically deformed so that tension acts on the second member.

Abstract: A mucous membrane lifting instrument for an endoscope includes a first support portion which has an outer circumference surface and a longitudinal axis; a second support portion which is provided at a position spaced from the outer circumference surface of the first support portion, and has an outer circumference surface and a longitudinal axis; a pressing portion which has a proximal end and a distal end connected to the proximal end thereof and positioned more distally than the distal end portion of the endoscope; a lifting portion which is connected to the distal end of the pressing portion, extended from the distal end of the pressing portion, and passes through the space between the first support portion and the second support portion; and an attachment member configured to attach both of the first pressing portion and the second pressing portion to the endoscope.

Abstract: An organ model for endoscope includes: a basic shape part formed by imitating a shape of a tubular organ; and a tissue holding part that holds a tissue piece and is detachably provided with respect to the basic shape part. The tissue holding part includes: a main body that is formed in a tubular shape and has a window part communicating with an internal space, on an outer peripheral surface; and a fixing member that fixes the tissue piece on the main body such that at least a portion of the tissue piece overlaps the window part. The main body is rotatable in a circumferential direction of the main body with respect to the basic shape part, in a state where the main body is attached to the basic shape part.

Abstract: A mucous membrane lifting instrument for an endoscope includes a first support portion which has an outer circumference surface and a longitudinal axis; a second support portion which is provided at a position spaced from the outer circumference surface of the first support portion, and has an outer circumference surface and a longitudinal axis; a pressing portion which has a proximal end and a distal end connected to the proximal end thereof and positioned more distally than the distal end portion of the endoscope; a lifting portion which is connected to the distal end of the pressing portion, extended from the distal end of the pressing portion, and passes through the space between the first support portion and the second support portion; and an attachment member configured to attach both of the first pressing portion and the second pressing portion to the endoscope.

Abstract: A model for an endoscope includes a tissue holding portion including: a first member which has a through hole, which is hard, and which is formed in a frame shape; and a second member which is formed in a sheet shape with a material that is more flexible than the first member and is elastically deformable, which has a window portion that penetrates the second member in a thickness direction of the second member, and which is attached to the first member. A piece of tissue is attached to the second member such that the piece of tissue overlaps the window portion, and the second member is attached to the first member in a state in which the second member is elastically deformed so that tension acts on the second member.

Abstract: An endoscope auxiliary tool includes a first support section which is formed to extend along a longitudinal axis, a second support section which is formed substantially in parallel to the longitudinal axis of the first support section, a first protrusion section and a second protrusion section which are formed at distal end sections of the first support section and the second support section, respectively, and disposed more distal than the distal end section of the endoscope to sandwich an axis of a channel having an opening at the distal end section of the endoscope, and a positioning section which is configured to position the first protrusion section and the second protrusion section with respect to the distal end section of the endoscope such that the first support section and the second support section are inclined to the axis of the channel.

Abstract: Provided is a grasper including an introduction tube that is capable of being inserted into a body cavity; an operational elongate body that is inserted into the introduction tube so as to advance and retract; and a clip that is attached to a distal end portion of the introduction tube and is operated by the relative movement between the operational elongate body and the introduction tube so as to grasp a body tissue, then is indwelled in a body. The clip has a plurality of grasping arms which are operated to be moved by the operational elongate body or the introduction tube, at least in a direction where the grasping arms are closed, so as to grasp the body tissue; and a retracting portion which retracts a portion of the body tissue between the plurality of grasping arms.

Abstract: A ligation apparatus that ligatures living tissue using a clip and provides an optimal ligation apparatus for ligaturing living tissue in a body cavity. The ligation apparatus includes a clip with a clip claw member that is advanced and retreated relative to a pressing member to open and close, a sheath configured to accommodate the clip such that the clip claw member is not exposed to the outside, an advance and retreat restricting mechanism which restricts advance and retreat of the pressing member relative to the sheath at a distal end portion of the sheath and allows advance and retreat of the clip claw member relative to the pressing member according to advance and retreat of the operation wire relative to the sheath to allow the clip ligaturing living tissue, and a releasing mechanism which releases at least a portion of the clip when the clip ligatures the living tissue.

Abstract: A ligation apparatus includes a clip having a clip claw member advanced and retreated relative to a pressing member to be opened and closed, a sheath configured to accommodate the clip such that the clip claw member is not exposed to the outside, an advance and retreat restricting mechanism restricting advance and retreat of the pressing member relative to the sheath at a distal end portion of the sheath allowing advance and retreat of the clip claw member relative to the pressing member according to advance and retreat of the operation wire relative to the sheath so as to allow the clip ligaturing living tissue, and a releasing mechanism releasing at least a portion of the clip so that the clip ligatures the living tissue.

Abstract: A clip device 1 that has a coil-shaped tubular body 6 that is inserted through a curvable treatment instrument insertion channel of an endoscope, the tubular body 6 includes a proximal side coil (first coil) 10 that has a spring constant per unit length of 15 N/mm to 500 N/mm and is disposed on the proximal end side of the tubular body 6; and a distal end side coil 11 that is connected to the distal end of the proximal side coil 10, has a greater inner diameter than the inner diameter of the proximal side coil 10, has a spring constant per unit length of 15 N/mm to 500 N/mm, and has a spring constant that differs from the spring constant of the proximal side coil 10, with the ratio of the spring constants of the proximal side coil 10 and the distal end side coil 11 is greater than 1.0 and less than or equal to 2.0.

Abstract: The present invention relates to a ligation apparatus that ligatures living tissue by a clip and provides an optimal ligation apparatus for ligaturing living tissue in a body cavity.

Abstract: Provided is a grasper including an introduction tube that is capable of being inserted into a body cavity; an operational elongate body that is inserted into the introduction tube so as to advance and retract; and a clip that is attached to a distal end portion of the introduction tube and is operated by the relative movement between the operational elongate body and the introduction tube so as to grasp a body tissue, then is indwelled in a body. The clip has a plurality of grasping arms which are operated to be moved by the operational elongate body or the introduction tube, at least in a direction where the grasping arms are closed, so as to grasp the body tissue; and a retracting portion which retracts a portion of the body tissue between the plurality of grasping arms.

Abstract: The present invention relates to a ligation apparatus that ligatures living tissue by a clip and provides an optimal ligation apparatus for ligaturing living tissue in a body cavity.

Abstract: A clip device 1 that has a coil-shaped tubular body 6 that is inserted through a curvable treatment instrument insertion channel of an endoscope, the tubular body 6 includes a proximal side coil (first coil) 10 that has a spring constant per unit length of 15 N/mm to 500 N/mm and is disposed on the proximal end side of the tubular body 6; and a distal end side coil 11 that is connected to the distal end of the proximal side coil 10, has a greater inner diameter than the inner diameter of the proximal side coil 10, has a spring constant per unit length of 15 N/mm to 500 N/mm, and has a spring constant that differs from the spring constant of the proximal side coil 10, with the ratio of the spring constants of the proximal side coil 10 and the distal end side coil 11 is greater than 1.0 and less than or equal to 2.0.