Abstract: A medical treatment device includes a ligating member, a stopper and a ligation releasing member. The ligating member has a distal end portion and a proximal end portion, that ligates biological tissue. The stopper is provided to be movable forward or backward with respect to the ligating member, and stoppable by friction on the ligating member to maintain the biological tissue in a ligated state by the ligating member. The ligation releasing member is provided on the ligating member to release the ligation state between the ligating member and the stopper by moving the ligating member to the distal end side with respect to the stopper.

Abstract: An endoscopic therapeutic instrument has a therapeutic section, a flexible transmission member which transmits operating driving forces to the therapeutic section by moving forwardly and reversely, and a sheath section in which the transmission member can move forwardly and reversely. A proximal side of this transmission member is connected to an operating tube section, and the therapeutic section is driven by forward and backward movements of the operating tube section. An endoscope having a channel into which the endoscopic therapeutic instrument is insertable, contains a mechanism for driving the sheath section and a mechanism for driving the operating tube section. The endoscope controls these mechanisms to cooperate with each other in controlling the endoscopic therapeutic instrument operations.

Abstract: In the treatment method of the present invention, the operation is performed in the following step an apparatus is perorally inserted in the stomach, a distal end portion of the apparatus inserted in the stomach is introduced from the stomach into the peritoneal cavity, a membrane of part of the outer wall of the abdominal esophagus is removed by the distal end portion of the apparatus which is introduced in the peritoneal cavity, the distal end portion of the apparatus which is introduced in the peritoneal cavity is returned therefrom into the stomach, the stomach fundus is perorally pulled to the part of the outer wall of the abdominal esophagus, and the pulled stomach fundus is fixed to the part of the outer wall of the abdominal esophagus.

Abstract: A lesion identification system for surgical operations has a light marker adapted for placement in the vicinity of a lesion inside an organ of an organism, and a location-identifying device detecting a light emitted from the light marker at an outside of the organ for identifying a location of the lesion. The marker includes a light emitter and an engagement member associated with the emitter to be engageable with a wall of the organ. The engagement member includes a clip. The light emitter emits light with a wavelength in a near-infrared range. The device includes an endoscope comprising an inserter section having an image pickup element picking up a reflected light, involving the light from the light marker, at an outside of the organ, and an image pickup unit allowing the reflected light, picked by the image pickup element, to be generated as an image for display on a monitor.

Abstract: An endoscopic surgical instrument has an insertion portion to be inserted in a channel of an endoscope, a treatment portion provided at a tip of the insertion portion for treating an objective part and a manipulation portion provided close to a proximal end of the insertion portion. The operator can move the insertion portion forward and backward at least relative to the channel by operating the manipulation portion in a state the endoscopic surgical instrument is inserted in the channel of the endoscope. In this manner, by the manipulation portion, the endoscopic surgical instrument can be operated to move forward and backward relative to the channel. Therefore in case the manipulation portion is located close to a channel entrance (forceps port) of the endoscope, the operator of the endoscope is able to manipulate the endoscopic surgical instrument without assistance from others.

Abstract: An ultrasonic transducer unit that generates ultrasonic vibration for treating living tissues has an ultrasonic transducer and a cover member that covers the ultrasonic transducer. A flexible sheath is coupled at one end to the cover member. A signal cable extends through the sheath and is connected at one end to the ultrasonic transducer. A transducer drive unit is connected to the other end of the signal cable. An operation unit is provided at the other end of the flexible sheath.

Abstract: An over-tube for use in an endoscopic treatment in an abdominal cavity using an endoscope includes an over-tube main body which is inserted from a distal portion thereof via a natural opening in a patient's body to access the inside of the abdominal cavity from the distal portion through a lumen wall, and an internal cover which is disposed in a passage of the endoscope disposed in an inner cavity of the over-tube main body and which is extractible from a proximal portion of the over-tube main body.

Abstract: This invention reduces the amount by which members protrude to the outside of a forceps for endoscope that can perform an oscillating operation, and reduces the amount of contact between an organism and parts other than the surgical instruments, thereby maintaining the visual field of the endoscope. The forceps for endoscope comprises an insertion section that is inserted inside a body cavity, an openable and closable forceps section provided at the tip of the insertion section, and a operation section for controlling the forceps section. The forceps section comprises a first forceps member, and a second forceps member, which faces the first forceps member and can rotate with a first pivotal supporting member as a fulcrum; the second pivotal supporting member supports the first forceps member from vertically above it so that it can rotated freely around an oscillating operation axis member, and is provided between the oscillating operation axis member and an opening-closing operation axis member.

Abstract: A ligation apparatus includes an insertion tube extending toward one direction, a clamp part which is provided on a distal side of the insertion tube and clamps a living organ, a first control mechanism which is connected to the clamp part via a first control shaft member inserted inside the insertion tube and controls opening-and-closing action of the clamp part by advancing and retracting the first control shaft member, a ligation part which ligates the living organ by closing a pair of arm members provided on the distal side of the insertion tube; and a second control mechanism which is connected to the ligation part via a second control shaft member inserted inside the insertion tube, and closes the pair of arm members and releases the ligation part by advancing and retracting the second control shaft member.

Abstract: An ultrasonic treatment apparatus comprises an endoscope having an insertion portion to be inserted in a body cavity, and a treatment unit having an ultrasonic vibrator which generates ultrasonic vibrations, and a treatment portion which performs treatment by utilizing the ultrasonic vibrations generated by the ultrasonic vibrator. The ultrasonic treatment apparatus further comprises a treatment unit holding portion, which is provided in a distal end portion of the insertion portion and to which the treatment unit is attached, a cable which transmits an electric signal to the ultrasonic vibrator, and at least one bundle member which bundles the insertion portion and the cable.

Abstract: A high-frequency current forceps has a pair of clamp pieces facing each other. Each clamp piece has an electrically insulated clamp face facing each other. The clamp piece has a body on which a surface is electrically insulated, and a wire having two ends supported on the body. A concave portion is formed on the center portion of the clamp face so that the center portion forms a curved surface protruding toward a backside of the clamp piece in relation to its clamp face. Each end of the wire is installed inside the inner wall of the concave portion. The wire is supported above the concave portion so that the wire contacts another clamp piece when the two clamp pieces are closed.

Abstract: A treatment tool for an endoscope, including: an insertion tube extending toward one direction; a movable tip member which is provided on a tip of the insertion tube and which is used for a treatment of a living organ; a control member of which a tip is connected to the insertion tube and controls the movable tip member by advancing and retracting a control shaft member inserted in the insertion tube; and a covering tube which covers at least one part of a circumference of the insertion tube. At least one part of the insertion tube rotates freely about an axis of the insertion tube.

Abstract: This suturing instrument has a flexible inserted portion, which is introduced into a body cavity, and a hand operated portion, which is manipulated from outside the body by the surgeon. An anchoring member, which is attached to suture material, is housed inside the puncture needle at the end of the inserted portion. A pushing member, which pushes out the anchoring member, has a structure that enables it to be inserted into the inserted portion and the hand operated portion. Further, the puncture needle communicates with a flow path inside the hand operated portion, and a gas port for supplying flow to this flow path is provided to the hand operated portion.

Abstract: The present invention aims to provide an anastomosing instrument that can anastomose biological tissue with surety.

Abstract: In a link device for surgical tool and a surgical tool suitable for used with an endoscope, the diameter of an insertion section can be made narrow. A multi-free forceps (surgical tool) is used as a soft surgical tool for use with an endoscope. The multi-free forceps comprises a link device for surgical tool that is inserted into a human cavity. The link device for surgical tool comprises a pipe-like insertion section, a surgical section that connects to a tip of the insertion section, and a control section that controls the surgical section. A base side of a deviating link member is securely connected to a first control axis member, and a base side of the deviating link member that forms the surgical section side extends in parallel to the first control axis member at a position that is further to the inside than the outer peripheral face of the insertion section, while deviating further to the outside of the diameter direction than the central axis of the first control axis member.

Abstract: There is provided an endoscopic treatment system. The system includes an endoscope having an insertion portion which is inserted into a body and has a forceps insertion duct, and a light emitting member which has an end portion that emits the light and is inserted into a hollow organ in the body through the forceps insertion duct of the endoscope. The light emitting member issues positional information of the hollow organ which is detected through the endoscope orally and gastrically inserted into an abdominal cavity by causing the end portion to emit the light in the hollow organ. The system includes a treatment instrument by which a treatment is conducted in the abdominal cavity in cooperation with the endoscope.

Abstract: A high-frequency current forceps includes a pair of clamp pieces having a pair of clamp faces facing each other, and the pair of clamp faces is formed on metal such as stainless steel which is electrically insulated by covering the whole surface with an insulation film. One of the clamp faces is formed in a planar shape, while another clamp face is formed in a chevron shape having a ridge portion extending along a length direction of the clamp piece. A linear electrode which is not covered with the insulation film is provided on the ridge portion on the clamp face.

Abstract: A treatment apparatus to treat a tissue in a body cavity is disclosed. The apparatus comprises a base disposed in the vicinity of a tip-end portion of an endoscope, and an in-tissue inserting portion including a base end supported by the base and a tip end insertable in the tissue in the body cavity in a direction substantially parallel to the surface of the tissue, and extending to the tip end from the base end in a tapered shape. The in-tissue inserting portion has an inner side disposed in the vicinity of the surface of the tissue when inserted into the tissue. The apparatus further comprises a high-frequency electrode, for treating the tissue, supported by the base and disposed in the vicinity of the inner side of the in-tissue inserting portion, and a cable which supplies power to the high-frequency electrode from a high-frequency power source outside the body.

Abstract: There is provided a flexible guide tube which guides an endoscope or a therapeutic device into an abdominal cavity through the mouth and stomach to conduct an observation or a therapeutic treatment in the abdominal cavity. The guide tube includes an insertion section which has a distal end, a peripheral section, and a central axis, and which is capable of being inserted into a body through the mouth, and two expandable and shrinkable balloons arranged in the vicinity of the distal end at a predetermined distance from each other in the axial direction on the periphery of the insertion section. The predetermined distance is preferably set to 3 to 8 mm, and the length of the insertion section is preferably set to about 600 to 1000 mm.

Abstract: There is provided an endoscopic inserting system. The system includes an endoscope which is inserted into a lumen inside a body through a natural opening of a human body, an opening member which forms an opening for inserting the endoscope into a thoracic cavity or an abdominal cavity from the lumen inside the body at a wall portion of the lumen, and a retracting member which, when forming the opening, retracts the wall portion of the lumen.