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: The medical treatment endoscope according to the present invention includes a sheath having a flexibility; at least one arm member having a bending part that projects out from a front end of the sheath and performs bending actions; an open/close mechanism which directs the arm member from a direction along a central axis of the sheath to a direction deviated from the central axis of the sheath, and from a direction deviated from the central axis of the sheath to a direction along the central axis of the sheath; and a viewing device and an illuminating member that are disposed to the front end side of the sheath.

Abstract: In a treatment endoscope which includes: an elongated insertion section having a first channel for inserting a treatment instrument therethrough; an arm, having a second channel for inserting a treatment instrument therethrough, attached to the distal end of the insertion section so that the first channel communicates with the second channel; a first operation section for operating the arm; and a second operation section for operating the insertion section, the arm has a first bending section which can be operated to be bent via the first operation section, the insertion section has a second bending section which can be operated to be bent via the second operation section, and an interlock mechanism connects the first operation section to the second operation section so that, when either one of the first bending section and the second bending section is bent by operating either one of the first operation section and the second operation section, the other one of the first bending section and the second bendin

Abstract: The endoscopic treatment instrument includes an insertion portion; a treatment portion; and a control portion. The treatment portion includes a pair of forceps members; a tip cover; a distal end holding portion that is fixed to a distal end of the insertion portion; a distal end locking member that restrains a relative movement by locking the tip cover onto the distal end holding portion; and a distal end release member that is provided on an operational member by which the pair of forceps members is opened and closed and that releases an engagement made by the distal end locking member between the tip cover and the distal end holding portion at least when the pair of forceps members is closed.

Abstract: This invention includes a clip having arms which grip living tissue, a press tube serving as a clamping member which is fitted and mounted on the clip to close the arms of the clip, a coupling member which can be inserted into the press tube and engages with the clip, and projections serving as lock portions which hold the arms of the clip in a closed state when the clip engages with the press tube.

Abstract: An endoscopic treatment instrument having a treatment portion having: an input member; a first link disconnectably connected to the input member; a first control plate disposed in a first connecting portion, inserting the input member through the first control plate, and engaging the input member by inclination of the first control plate; a first forceps member opening and closing according to advancing and retracting motions of the first link; a second link disconnectably connected to the input member; a second control plate disposed in a second connecting portion, inserting the input member through the second control plate, and engaging the input member by inclination of the second control plate; and a second forceps member opening and closing according to advancing and retracting motions of the second link, the opening-and-closing angle of the second forceps member being less than that of the first forceps member.

Abstract: The present invention provides a clipping device having a coil sheath inserted into an insertion tube in a back/forth movable way to allow it to be inserted into a body cavity, an operation wire inserted into the coil sheath in a back/forth movable way, and a clip directly connected to a distal end of the operation wire to allow it to clip a living tissue.

Abstract: An overtube including an insertion portion having a distal end portion and a proximal end portion, at least the distal end portion being inserted into an examination subject; a first lumen formed in the insertion portion and in which a device for carrying out medical procedures in the examination subject is freely inserted and removed; a tissue cutting portion that is to be disposed at the distal end portion of the insertion portion traversing the first lumen and that cuts the tissue of the examination subject; and a holding portion that holds the tissue cutting portion at a position removed from a position traversing the first lumen.

Abstract: An over-tube of the present invention is an over-tube which guides a device having an insertion section to be inserted into a body of a patient, when inserting the insertion section into or retracting the insertion section from the body of the patient, wherein: a gas-supplying passage is defined between an inner face of the over-tube and the device to be inserted into the over-tube; the gas-supplying passage communicates with a gas-supplying port which is provided on a proximal end side of the over-tube, and a communicating port which is formed on an over-tube insertion section and supplies a gas into a trachea of the patient; and a first sealing member which secures an air passage for communicating the gas-supplying passage and the trachea of the patient via the communicating rod by sealing between a body wall of the patient and the communicating port, is provided on a periphery of an over-tube insertion section.

Abstract: The present invention provides a clipping device having a coil sheath inserted into an insertion tube in a back/forth movable way to allow it to be inserted into a body cavity, an operation wire inserted into the coil sheath in a back/forth movable way, and a clip directly connected to a distal end of the operation wire to allow it to clip a living tissue.

Abstract: This invention includes a clip having arms which grip living tissue, a press tube serving as a clamping member which is fitted and mounted on the clip to close the arms of the clip, a coupling member which can be inserted into the press tube and engages with the clip, and projections serving as lock portions which hold the arms of the clip in a closed state when the clip engages with the press tube.

Abstract: This invention includes a clip having arms which grip living tissue, a press tube serving as a clamping member which is fitted and mounted on the clip to close the arms of the clip, a coupling member which can be inserted into the press tube and engages with the clip, and projections serving as lock portions which hold the arms of the clip in a closed state when the clip engages with the press tube.

Abstract: A tissue shredding device is provided which includes a shredding pipe which is inserted into a patient body in which a plurality of opening portions is formed in a longitudinal direction; and a plurality of wires which is withdrawn from the opening portion, bent back outside the shredding pipe, and drawn into the shredding pipe. Here, the tissue shredding device may be changed to one of a first arrangement in which the wires are withdrawn from the shredding pipe so that a tissue can be introduced toward top portions corresponding to bent-back parts of the plurality of wires, a second arrangement in which the top portions are arranged opposite to the shredding pipe, and a third arrangement in which the wires are drawn into the opening portion.

Abstract: The medical treatment endoscope according to the present invention includes a sheath having a flexibility; at least one arm member having a bending part that projects out from a front end of the sheath and performs bending actions; an open/close mechanism which directs the arm member from a direction along a central axis of the sheath to a direction deviated from the central axis of the sheath, and from a direction deviated from the central axis of the sheath to a direction along the central axis of the sheath; and a viewing device and an illuminating member that are disposed to the front end side of the sheath.

Abstract: The medical treatment endoscope according to the present invention includes a sheath having a flexibility; at least one arm member having a bending part that projects out from a front end of the sheath and performs bending actions; an open/close mechanism which directs the arm member from a direction along a central axis of the sheath to a direction deviated from the central axis of the sheath, and from a direction deviated from the central axis of the sheath to a direction along the central axis of the sheath; and a viewing device and an illuminating member that are disposed to the front end side of the sheath.

Abstract: The medical treatment endoscope according to the present invention includes a sheath having a flexibility; at least one arm member having a bending part that projects out from a front end of the sheath and performs bending actions; an open/close mechanism which directs the arm member from a direction along a central axis of the sheath to a direction deviated from the central axis of the sheath, and from a direction deviated from the central axis of the sheath to a direction along the central axis of the sheath; and a viewing device and an illuminating member that are disposed to the front end side of the sheath.

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: An instrument for an endoscope includes a first insertion portion having an base end to which an operation section is connected; a first offset portion extending outward from an axis of the first insertion portion; a second insertion portion having a base end joined to the first offset portion and an element extending parallel to the axis of the first insertion portion; a second offset portion which is joined to a head of the second insertion portion and reaches an extension of the axis of the first insertion portion; a third insertion portion which is joined to the second offset portion and has a portion arranged on an axis which is substantially the same as at least a part of the axis of the first insertion portion; and an inner hole formed through the first insertion portion, the first offset portion, the second insertion portion, the second offset portion, and the third insertion portion.

Abstract: An overtube according to this invention includes: an insertion part, that is inserted into a subject and has a lumen, through which a device insertion part of a device for performing a medical procedure inside a body of the subject is removably inserted, the insertion part being inserted into the subject; and a tissue incising part that is disposed at a distal end side of the insertion part so as to cross the lumen and incises a tissue of the subject.

Abstract: A treatment system includes a guide component that is used to insert a treatment tool into a body cavity, a tilt sensor that is provided in the guide component and detects an angle of inclination of the treatment tool that has been inserted inside the guide component, an insertion amount sensor that is provided in the guide component and detects an amount that the treatment tool has been inserted inside the guide component, a switching device that switches an observation range of images of an interior of the body cavity that are acquired by an observation device that has been introduced into the body cavity and are then displayed on a display unit, and a system control unit that drives the switching device based on information about the angle of inclination and insertion amount of the treatment tool.