Abstract: An endoscope cap includes: a hood portion attached to a distal end portion of an endoscope; a cap portion connected to a distal end of the hood portion, having an abutting surface against which the endoscope is abutted in a state of the endoscope being inserted into the hood portion, and protruding from the distal end of the hood portion; a channel tube into which an elongated device is inserted; and a coupling member for coupling the device with the hood portion, the member being supported by the hood portion and extending along the hood portion. The hood portion has a pair of support holes into which the member is inserted. The member is pivotable with respect to the hood portion, with the individual support holes serving as fulcrums. The holes are formed at positions closer to a proximal end of the hood portion than the abutting surface is.

Abstract: Provided is an endoscope treatment tool including: a sheath; a distal-end support member that is secured to a distal end of the sheath and that has a rotation shaft extending in an axial direction orthogonal to a longitudinal axis of the sheath; a pair of gripping members that are linked to the rotation shaft in a pivotable manner; and an operation wire that is linked to the gripping members, wherein the distal-end support member includes: a pair of frame pieces that extend in a direction of the longitudinal axis with a spacing therebetween in a direction orthogonal to the longitudinal axis and that include through-holes through which the rotation shaft passes; and a plate that includes a bearing to which the rotation shaft is fitted and an abutting portion protruding radially outward in the sheath, and wherein the plate extends into a space between the rotation shaft and the sheath.

Abstract: An endoscope treatment tool includes: a cap defining a longitudinal axis and a proximal-end opening for insertion of a distal end section of an endoscope to detachably attach the cap to the endoscope; a treatment tool extending longitudinally along an outside of the cap and having a distal end configured for tissue manipulation; and a coupling member extending between the cap and the treatment tool to movably couple the treatment tool to the cap, the coupling member having high flexibility.

Abstract: A catheter includes: an outer tube; an inner tube provided inside of the outer tube; and a branched part that separates the outer tube and the inner tube from each other on a first end side thereof, wherein a ratio between cross-sectional areas of a first lumen formed at least by inside of the outer tube and outside of the inner tube and a second lumen formed within the inner tube is set such that a ratio between cross-sectional areas of the outer tube and the inner tube in the branched part is equal to or greater than the ratio between the cross-sectional areas of the first lumen and the second lumen in a state where the inner tube is arranged inside of the outer tube in a length direction in which the outer tube and the inner tube extend.

Abstract: A catheter includes: a conduit part having a plurality of lumens whose external diameter at a tip side thereof is constant, each of the plurality of lumens extending along an axis line inside the conduit part; and a branched part that separates axis lines of the plurality of lumens from each other at a base end side of the conduit part. At an end of the conduit part inserted into inside the branched part, an opening of each of the plurality of lumens is provided along a different axis line with each other, and a level difference is formed at the end of the conduit part.

Abstract: A suturing device that sutures tissues by releasing a suture unit includes: a first anchor and a second anchor included in the suture unit; a hollow needle receiving the first and second anchors inside of the needle; a tube which is fixed to a proximal end of the needle; a wire inserted into the tube and the needle; a first sheath through which the tube and the needle are inserted; an operating portion main body fixed to a proximal end of the first sheath; a slider fixed to a proximal end of the tube and configured to move forward and backward freely in a sliding manner with respect to the operating portion main body; a slider control portion configured to regulate movement of the slider with respect to the operating portion main body at all times; a handle portion provided in the slider; and a deactivation member.

Abstract: A fistulectomy method of forming a fistula between a first duct and a second duct is provided. The method including: inserting an insertion portion of an endoscope having a channel into the first duct; inserting a treatment instrument into the channel; feeding a distal end of the treatment instrument into the second duct through the first duct; discharging a first magnet from the distal end of the treatment instrument to the second duct; pulling the treatment instrument from the second duct; discharging a second magnet to the first duct; and attaching the first magnet and the second magnet magnetically when the first and second ducts are between the first and second magnets.

Abstract: This treatment device for endoscope is used for cutting body tissue while the treatment device is retractably projected from a catheter. The treatment device includes: a control wire inserted into the catheter; and a cutting electrode mounted at the distal end of the control wire with the cutting electrode being imparted a bent configuration in advance. The cutting electrode elastically deforms in a state where the cutting electrode is retracted into the catheter, thereby assuming such a shape as to resemble the configuration of the catheter.

Abstract: A suture instrument includes: a therapeutic insertion section having a suture section for suturing tissue; a cylindrical main operation unit; a rod section in the main operation unit, for discharging a suture thread and end section members connected to the suture thread; a pusher's distal end section for pressing the end section member; and a guide mechanism for rotating the rod section after linear movement of the pusher's distal end section at a position where one of the end section member is fed from a distal end of the suture section, the rod section being rotated in the circumferential direction to a position where the other one of the end section members is fed from the distal end of the suture section, so that each one of the end section members is discharged one after another and so that the end section members can be separated finally.

Abstract: A suture instrument according to the present invention includes a suture tool having an anchor anchored to a biological tissue, a suture thread drawn out of the anchor, and a stopper disposed on the suture thread; a hollow puncture needle, which can house the anchor thereinside, having a hard needle portion formed with an opening at the distal end thereof; a pusher which is disposed to advance and retreat in the puncture needle and a proximal side of which extends to a proximal side with its distal end being in contact with the anchor; and an outer sheath which houses the puncture needle so as to advance and retreat, in which an engaging portion, which is detachably engaged with the suture thread which is drawn in a state where the anchor is housed in the puncture needle, is disposed in the puncture needle or in the pusher.

Abstract: A suturing device is disclosed which sutures a tissue using a suture unit having a suture thread with both ends fitted to a first anchor and a second anchor, respectively. The suturing device includes a hollow tip member receiving the first and second anchors; a wire having a front end inserted through the hollow tip member so that the first and second anchors can be released out from the hollow tip member; a flexible tube, a parallel member, a relative position holding member, a forward movement restricting member, and an operating portion. At least one of the hollow tip member, the forward movement restricting member, and the flexible tube has a communication portion on an outer peripheral surface thereof so as to communicate with an internal cavity, and a middle portion of the suture unit is inserted into the communication portion and is tied to the wire.

Abstract: A suture tool is provided in which the fixing member includes: a base portion which has a thin and longitudinal plate shape and which has a through-hole through which the suture thread passes; and a pair of bent pieces of which ends are opposed to each other by bending both ends of the base portion toward the center thereof. Thick plate portions which are thick in an insertion direction of the suture thread and which interpose the suture thread therebetween are disposed at the ends of the pair of bent pieces, respectively.

Abstract: A fistulectomy method of forming a fistula between a first duct and a second duct is provided. The method including: inserting an insertion portion of an endoscope having a channel into the first duct; inserting a treatment instrument into the channel; feeding a distal end of the treatment instrument into the second duct through the first duct; discharging a first magnet from the distal end of the treatment instrument to the second duct; pulling the treatment instrument from the second duct; discharging a second magnet to the first duct; and attaching the first magnet and the second magnet magnetically when the first and second ducts are between the first and second magnets.

Abstract: A suture instrument includes: a therapeutic insertion section having a suture section formed on the distal end thereof and suturing a tissue endoscopically; a cylindrical main operation unit connected to a proximal end of the therapeutic insertion section; a rod section inserted into the main operation unit along an axial line of the main operation unit from a proximal end of the main operation unit, the rod section conducting operations for discharging a suture thread and a plurality of end section members connected to at least an end of the suture thread from a distal end of the suture section; a pusher's distal end section for pressing the end section member to move corresponding to the operations conducted by the rod section; and a guide mechanism for rotating the rod section by a predetermined degree in the circumferential direction after conducting a linear movement of the pusher's distal end section at a position where one of the end section member is fed from a distal end of the suture section, and gu

Abstract: A suturing device is disclosed which sutures a tissue using a suture unit having a suture thread with both ends fitted to a first anchor and a second anchor, respectively. The suturing device includes: a hollow tip member receiving the first and second anchors; a wire having a front end inserted through the tip member so that the first and second anchors can be released from the tip member; a flexible tube having a distal end integrally connected to a proximal end portion of the tip member, through which the wire is inserted so as to freely move forward and backward in the axial direction of the tube; a main body fixed to a proximal end of a sheath through which the tube is inserted; and a sliding portion fixed to the proximal end of the tube and fitted to the main body so as to freely move with respect to the main body in the axial direction in a sliding manner.

Abstract: A suture device which sutures tissue using a suture unit having a first anchor and a second anchor respectively attached to both ends of a suture thread, wherein a hollow distal member is provided which houses said first anchor and second anchor, the end face of the distal side of said distal member is formed so as to constitute a first sharp angle with the axis of said distal member, the distal side of said second anchor is provided with a sloped face so as to constitute a second sharp angle with the axis of said second anchor which is an angle at or below said first sharp angle, and said first anchor and said second anchor are axially aligned and housed inside said distal member so that said second anchor is positioned on the proximal side.

Abstract: An endoscope treatment instrument having a needle for puncturing a biological tissue in a body cavity includes an indicator region provided on the outer surface of the needle including an indicator shape having miniature concave portions, and a plain region without the indicator shape provided in connection with at least one side of the indicator region in the axial line direction of the needle.

Abstract: A suture instrument that is inserted into a body and ejects an elongated anchor to which a suture thread that sutures a perforation is connected and which is placed on tissue, including a base that extends from a proximal end on a hand side to a remote end that is introduced to tissue and has flexibility; an anchor holding instrument that is disposed at the remote end of the base, is capable of housing a plurality of the anchors inside, and whose distal end that ejects the anchors is approximately pointed in the direction of the proximal end of the base; a tip position changing mechanism that is provided for changing the tip position of the anchor holding instrument and causes the anchor holding instrument to move in a direction that intersects with the axial line of the lengthwise direction of the base; and a position operation device that operates the tip position changing mechanism at the hand side and operates the tip position of the anchor holding instrument.

Abstract: A suturing device is disclosed which sutures a tissue using a suture unit having a suture thread with both ends fitted to a first anchor and a second anchor, respectively.

Abstract: A suture instrument that is inserted into a body and ejects an elongated anchor to be engaged to tissue, consisting of: an elongated member that extends from a proximal end on a hand side to a remote end that is introduced to tissue and has flexibility; a needle that is provided at the remote end of the elongated member, has at the distal end a sharp tip that is capable of puncturing tissue, is capable of housing a plurality of the anchors inside, and is provided with a side hole through which the anchors are capable of passing; a pusher whose remote end abuts the anchor that is housed in the needle and is disposed in a manner to be capable of moving in the axial direction of the elongated member; and a push-out control portion that is provided in the needle or the pusher and changes the movement direction of the anchor that has been moved to a formation position of the side hole by the pusher from the length-wise direction of the needle to a direction heading toward the side hole.