Abstract: An endoscope treatment system includes: an advancing and retracing device which electromotively advances and retracts a treatment instrument insertion portion of a treatment instrument to be introduced in a treatment instrument insertion channel through a treatment instrument opening opened at a mouth ring portion of an endoscope; and a connecting tube including a tube main frame to which the treatment instrument insertion portion is inserted and an attaching portion provided at one end portion of the tube main frame, while the attaching portion is arranged at the mouth ring portion or the treatment instrument insertion portion integrally.

Abstract: A treatment instrument operation unit is provided with a drive unit, an operation portion installation section and a command signal output section. The drive unit drives an operation portion for operating each treatment section of the respective treatment instruments. The operation portion is attached to the operation portion installation section provided to the drive unit. The command signal output section outputs an installation start signal to a controller for notifying that the installation of the treatment instrument has begun upon installation of the operation portion in the operation portion installation section. After outputting the installation start signal from the command signal output section to the controller, the drive unit drives the operation portion installation section to the position where the operation portion is allowed to be installed based on the control signal outputted form the controller.

Abstract: An endoscope includes a therapeutic instrument controlling base which is arranged to the distal portion of the inserting portion and controls such that a therapeutic instrument projected from the opening of a channel for inserting the therapeutic instrument at the distal portion of the inserting portion moves in the right and left directions of an observed image obtained by an observing unit, a controlling-base operating unit which is arranged to an operating section continuously arranged to the proximal side portion of the inserting portion and which can be operated in the right and left directions of an operator who grips the operating section, and a controlling-base operating mechanism which controls such that the therapeutic instrument controlling base moves in the right direction of the observed image according to the operation of the controlling-base operating unit in the right direction thereof by the operator who grips the operating section and controls such that the therapeutic instrument controlling

Abstract: To realize an endoscope insertion portion and endoscope system capable of providing a significant propulsive function by reducing a friction between a propulsive force generation section and an insertion portion, an endoscope insertion portion comprising: an introductory tube as an insertion portion; a spiral tube as a propulsive force generation section mounted on an outer peripheral surface of the introductory tube and rotating around the longitudinal axis of the introductory tube; and a plurality of ring members provided on an outer peripheral surface of an elastic cover tube at predetermined intervals between an inner peripheral surface of a spiral tube and the elastic cover tube 21, as a friction reduction section positioned between the spiral tube and the outer peripheral surface of the introductory tube (elastic cover tube) and reducing a contact resistance between an outer peripheral surface of the introductory tube (elastic cover tube) and the spiral tube.

Abstract: In order to realize an endoscope insertion portion and an endoscope system easily inserted into the body cavity such as a large intestine and is capable of improvement of invertibility into the body cavity without imposing pain on a patient, an endoscope insertion portion of the present invention includes an endoscope insertion portion capable of being inserted into a subject; a spiral tube as a propulsive force generation section mounted on the outer periphery side of the endoscope insertion portion and rotating around the longitudinal axis of the endoscope insertion portion; and a friction reduction spiral portion provided at a predetermined position on the outer periphery of a spiral-formed portion, for example, on the proximal end side, the friction reduction spiral portion being provided as a frictional force reduction member mounted on the spiral tube, reducing a frictional force generated between the spiral tube and a body-cavity inner wall.

Abstract: An endoscope has an observation window and an opening for channel in the end face of an endoscope inserting portion. The endoscope comprises a retaining member for retaining the vicinity of a treatment object part. At the time of treatment, an observation image is set in the vertical direction in such a manner that the upper part is located above (HU) the end face and the lower part is located below (HD) the end face. The retaining member is arranged movably between a position projecting outward of the end face from a position below (HD) the observation window and the opening for channel or a position above (HU) the observation window and the opening for channel on the end face, and a position retreating from the projecting position.

Abstract: An endoscope system according to the present invention includes: an endoscope equipped with a long insertion portion; a medical instrument which includes a treating portion installed in a distal part and used to perform various treatments in a body cavity and a long sheath including a rigid portion with predetermined flexibility and a flexible portion more flexible than the rigid portion, the rigid portion and flexible portion being installed consecutively starting from a distal side, where the sheath is inserted in a channel of the insertion portion of the endoscope; an operation instruction apparatus used to give commands regarding operation of the medical instrument; a first medical instrument drive apparatus which operates the treating portion of the medical instrument; and a second medical instrument drive apparatus which moves the sheath forward and backward.

Abstract: A medical system according to the present invention includes: a medical instrument provided with a treatment portion for performing treatment operations on living body tissue; a treatment portion displacement mechanism for displacing the position of the treatment portion of the medical instrument; a treatment detection portion that detects whether the treatment portion is in a treatment state or a non-treatment state; and a control portion that controls displacement of the treatment portion by controlling the treatment portion displacement mechanism according to detection results from the treatment detection portion.

Abstract: A medical device of the invention includes: a treatment instrument including a treatment portion which is used extended from a distal end of an endoscope insertion portion having a treatment instrument channel, an operation portion for operation of advancing/retreating an operation wire coupled to the treatment portion, and a treatment instrument insertion portion in which the operation wire is advanceably/retreatably inserted, the treatment instrument insertion portion having a predetermined flexibility and inserted into the treatment instrument channel; a detecting portion for detecting advancing/retreating moving amount of the treatment instrument insertion portion; a treatment portion operating device to which the operation portion is installed, the treatment portion operating device advancing/retreating the operation wire to operate the treatment portion; an operation instructing portion for instructing operation of the treatment portion; and a control device for judging a state of the treatment instrume

Abstract: According to the present invention, there is provided an endoscope system including: an endoscope having an elongated insertion portion; a medical instrument configured to be inserted in a channel of the insertion portion of the endoscope and to have an elongated flexible sheath; and an advancing and retracting apparatus configured to advance and retract the sheath of the medical instrument in the channel with two rollers, wherein the sheath of the medical instrument is configured to have an outer diameter larger than the distance between the roller surfaces of the two rollers, and to have a frictional resistance increasing unit for increasing frictional resistance between the respective roller surfaces and the outer peripheral surface of the sheath in contact with the respective roller surfaces in a state where the sheath is inserted between the two rollers.

Abstract: An elongated medical member of the invention includes: an insertion portion having a long length which is provided with a lumen through which an operation treatment instrument for carrying out a predetermined medical action can be penetrated; a guide portion for guiding the insertion portion, which is extended from a distal end of the insertion portion; and a holding portion for holding the operation treatment instrument, which is provided to the guide portion.

Abstract: An endoscope system includes: an endoscope including an elongated insertion portion provided with a bendable bending portion, the insertion portion being inserted into a duodenum; and a first balloon to a fourth balloon for moving a one-side surface of a distal end portion located nearer to a distal end side than the bending portion in the insertion portion in parallel with respect to a field of view direction S of an objective lens which is a diameter direction of the insertion portion, separately from bending of the bending portion, the one-side surface being located in a circumferential direction along an insertion direction W of the insertion portion and parallel to a central axis P of the insertion portion.

Abstract: An endoscopic operation assisting device includes a first handle member and a second handle member, which are openable and closable. The first handle member includes, at the side of an opening and closing surface portion thereof, a groove forming an insertion section holding hole for holding an insertion section of an endoscope. Further, the first handle member includes, on a surface portion of the first handle member contraposed to the opening and closing surface portion, a step portion including a flat surface which is provided at a distal end side disposed toward the direction of a distal end portion of the insertion section and which is lower than a proximal end side. Meanwhile, the second handle member includes, at the side of an opening and closing surface portion thereof, a groove forming the insertion section holding hole.

Abstract: With a first endoscope inserted through an overtube, the overtube is orally inserted into an object being examined, and a distal end portion of an insertion tube of the first endoscope is made to advance, within the object, from a jejunum via a jejunum-to-jejunum anastomosed portion and a jejunum-anastomosed bent portion so that the distal end portion is located adjacently to a Vater's papilla of a duodenum. The overtube is then sent to a position which is adjacent to the Vater's papilla along the insertion tube of the first endoscope. After this, the first endoscope is pulled from the overtube. A second endoscope is then inserted into the overtube to make a distal end portion of its insertion tube protrude from the distal end of the overtube and is located adjacently to the Vater's papilla. The second endoscope thus-approached is used to treat the Vater's papilla and the tissue therearound.

Abstract: An overtube comprises a flexible tubular portion in which an insertion channel is formed. An endoscope is inserted through the insertion channel. A plurality of balloons are loaded at plural positions on an outer surface of the flexible tubular portion. Specially, the balloons are expanded and shrunk selectively every use pattern, and the positions are different from each other in an axial direction of the flexible tubular portion and set to be fixed to an inner wall of either a body cavity or a tubular cavity of an object being examined at mutually different positions of the inner wall by expanding the balloons.

Abstract: A therapeutic system is provided, which is preferable to a treatment of pancreatic duct and biliary duct for Roux-en-Y gastrectomy patient. The therapeutic system is provided with a catheter equipped with an imaging device outputting a signal in reply to imaging, an overtube to be inserted into inside a patient, and a display displaying images based on the signal outputted from the imaging device. The overtube has an inserting channel into which the catheter is inserted, a therapeutic instrument channel into which a therapeutic instrument is inserted, an elevating base formed in an opening located at a distal end of, at least, the therapeutic-instrument channel, and an operation device to operate the elevating base. The elevating base is formed to allow a distal end portion of the therapeutic instrument to be mounted on the elevating base to elevate the distal end portion.

Abstract: A medical system includes: a treatment instrument having an insertion portion configured by an exterior member, and an insertion member that is inserted into the exterior member and is longer than the exterior member; an insertion portion inserting/pulling-out device to transmit a driving force to the exterior member or the insertion member configuring the insertion portion of the treatment instrument, the insertion portion inserting/pulling-out device advancing/retreating at least one of the exterior member and the insertion member; and a driving force non-transmitting portion provided to the insertion member, the driving force non-transmitting portion preventing a driving force of the insertion portion inserting/pulling-out device from being transmitted to the exterior member when the insertion member is moved by a predetermined distance.

Abstract: A biopsy forceps as one of treatment instruments for endoscope includes: a tubular coil sheath introduced into a body cavity through a treatment instrument channel included in an endoscope insertion portion; a treatment portion disposed closer to a distal end side than a distal end surface of the coil sheath; an operation wire for transmitting a turning force to turn the treatment portion in a circumferential direction, the operation wire being inserted in the coil sheath in a forwardly/backwardly movable manner and turned in the circumferential direction; and a turn restricting mechanism portion for restricting a turn position of the treatment portion turned by the turning force transmitted by the operation wire with respect to the coil sheath at a first turn-restricting position or at a second turn-restricting position.

Abstract: This mucosa separation apparatus includes a first insertion portion inserted to the interior of a subject, an expansion portion disposed on a head portion of the first insertion portion, and which expands by infusion of a fluid, a passage formed within the first insertion portion and connected to the expansion portion, for supplying the fluid to the expansion portion, and a curving portion which makes a head portion of an instrument inserted to the interior of the subject curve with respect to a part of the instrument which is closer to a base portion of the instrument than the head portion thereof.

Abstract: An endoscope system comprises multiple types of treatment tools including a treatment-tool insertion unit, and a function unit having a function for performing treatment; an electrically-driven operation device which electrically drives the function unit; an electrically-driven advance/retreat device which electrically drives the treatment-tool insertion unit; a control device including at least one of a control unit for outputting a control signal to the electrically-driven advance/retreat device and the electrically-driven operation device, and an operating program corresponding to a treatment tool; and an operation instructing device including a first operating instruction unit for outputting an instruction signal for placing the electrically-driven operation device and the electrically-driven advance/retreat device into a manually-driven operating state, and a second operating instruction unit for outputting an instruction signal for placing the electrically-driven operation device and the electrically-dr