Abstract: An endoscope includes: a distal end opening of a treatment instrument insertion channel opened at a side surface of a distal end portion; a treatment instrument elevator base that is provided at a position facing the distal end opening in the treatment instrument insertion channel and leads a distal end of a treatment instrument protruding from the distal end opening, to a desired position; a first wall portion along the insertion direction of the distal end opening; and a second wall portion at a proximal end side of the insertion direction of the distal end opening and provided with a groove in which a part of the treatment instrument elevator base is fitted when the treatment instrument elevator base is raised, and as the treatment instrument elevator base is raised, a guide wire protruding from the distal end opening is releasably engaged by contacting the treatment instrument elevator base, the first wall portion, and a surface constituting the groove of the second wall portion.

Abstract: An endoscope includes: a treatment instrument elevator base including a contact surface which contacts with a treatment instrument inserted into a treatment instrument insertion channel, and rotatably provided to a distal end to elevate the instrument; a contact portion provided to the distal end to contact with the instrument when the elevator base is elevated; a first leading portion provided to the contact surface to lead the instrument to a predetermined position on the contact surface as the elevator base is rotated; a holding portion provided to the contact surface and the contact portion, and including a grasping surface for sandwiching the instrument with a diameter not exceeding a predetermined value; and a second leading portion provided to the contact portion to lead the instrument larger than the grasping surface away from the holding portion.

Abstract: An endoscope includes: a distal end opening of a treatment instrument insertion channel opened at a side surface of a distal end portion; a treatment instrument elevator base that is provided at a position facing the distal end opening in the treatment instrument insertion channel and leads a distal end of a treatment instrument protruding from the distal end opening, to a desired position; a first wall portion along the insertion direction of the distal end opening; and a second wall portion at a proximal end side of the insertion direction of the distal end opening and provided with a groove in which a part of the treatment instrument elevator base is fitted when the treatment instrument elevator base is raised, and as the treatment instrument elevator base is raised, a guide wire protruding from the distal end opening is releasably engaged by contacting the treatment instrument elevator base, the first wall portion, and a surface constituting the groove of the second wall portion.

Abstract: An electric bending endoscope includes a temperature sensor that detects the temperature of a motor as a state value indicating the driving state of a bending drive unit. A bending control device comprises: a temperature detection unit that receives the data of the temperature detected by the temperature sensor; a record unit in which the limits of motor temperature inputted in advance are recorded; a comparison unit that compares the data of the temperature sent from the temperature detection unit with the limits of motor temperature recorded in the record unit; and a notification unit that notifies that the driving state of a motor is approaching the limit.

Abstract: An endoscope includes: a treatment instrument elevator base including a contact surface which contacts with a treatment instrument inserted into a treatment instrument insertion channel, and rotatably provided to a distal end to elevate the instrument; a contact portion provided to the distal end to contact with the instrument when the elevator base is elevated; a first leading portion provided to the contact surface to lead the instrument to a predetermined position on the contact surface as the elevator base is rotated; a holding portion provided to the contact surface and the contact portion, and including a grasping surface for sandwiching the instrument with a diameter not exceeding a predetermined value; and a second leading portion provided to the contact portion to lead the instrument larger than the grasping surface away from the holding portion.

Abstract: An electric bending endoscope comprises a bending portion arranged to an inserting portion, a bending driving unit and a buffering member. The bending driving unit bends the bending portion, and includes a motor, a first unit and a second unit. The motor generates driving force for bending the bending portion. The first unit holds the motor. The second unit includes a driving force transmitting member. The buffering member connects the first unit to an outer member of the inserting portion, a connecting code and a switch. The buffering member absorbs external force generated during the operation of the electric bending endoscope.

Abstract: An electric bending endoscope according to the present invention includes a bending portion arranged to an inserting portion, a bending driving mechanism which electrically bends the bending portion, an operation input member which instructs an operation to the bending driving mechanism so that the bending driving mechanism bends the bending portion, and a bending angle holding mechanism which holds the bending angle of the bending portion.

Abstract: An electric bending endoscope apparatus includes an electric bending endoscope, a bending control device for controlling a bending direction and the amount of bending of a bending portion based on a bending instructing signal outputted from a portion for instructing a bending operation in the electric bending endoscope, an image processing device for generating an observing image captured by the electric bending endoscope to a video signal, and a display device for displaying the video signal generated by the image processing device as an endoscope image, wherein the electric bending endoscope includes a bending driving portion for bending the bending portion arranged at an inserting portion, a bending motive portion for driving the bending driving portion, a portion for restoring transmission and disconnection of driving force that reversibly switches a status for transmitting the driving force by transmitting the driving force of the bending motive portion to the bending driving portion and a status for dis

Abstract: An endoscope includes: a treatment instrument elevator base including a contact surface which contacts with a treatment instrument inserted into a treatment instrument insertion channel, and rotatably provided to a distal end to elevate the instrument; a contact portion provided to the distal end to contact with the instrument when the elevator base is elevated; a first leading portion provided to the contact surface to lead the instrument to a predetermined position on the contact surface as the elevator base is rotated; a holding portion provided to the contact surface and the contact portion, and including a grasping surface for sandwiching the instrument with a diameter not exceeding a predetermined value; and a second leading portion provided to the contact portion to lead the instrument larger than the grasping surface away from the holding portion.

Abstract: An electric bending endoscope includes a temperature sensor that detects the temperature of a motor as a state value indicating the driving state of a bending drive unit. A bending control device comprises: a temperature detection unit that receives the data of the temperature detected by the temperature sensor; a record unit in which the limits of motor temperature inputted in advance are recorded; a comparison unit that compares the data of the temperature sent from the temperature detection unit with the limits of motor temperature recorded in the record unit; and a notification unit that notifies that the driving state of a motor is approaching the limit.

Abstract: Driving force of a bending motor is transmitted to a sprocket via a clutch mechanism portion. The operation of a switching operation lever switches the clutch mechanism portion to a disconnecting/restoring status. A bending control device includes a bending angle calculating portion which calculates information on a bending status based on an output signal of a potentiometer, a motor driving signal generating portion which generates a driving signal for bending a bending portion, a JS-motor driving signal generating portion which calculates a position for an instructing status of a stick portion based on the information on the bending status and generates the driving signal for moving the stick portion to the position, and a calibration instructing portion which receives a position signal from a status detecting switch and which sends an instruction for outputting to a JS motor, the driving signal generated by the JS-motor driving signal generating portion.

Abstract: An electrical bending endoscope includes: an elongated insertion section having a bending portion that is bendable within a predetermined range; a control section that is arranged to the proximal end of the insertion section; a driving source that generates the driving force for bending the bending portion; a driving-force transmitting mechanism that transmits the driving force supplied from the driving source to the bending portion; a driving-force interrupting mechanism that is arranged to a transmitting line of the driving force transmitted from the driving source to the bending portion and interrupts the transmission of the driving force; a switching operating member that is arranged to the control section and mechanically connected to the driving-force interrupting mechanism, to interrupt the transmission of the driving force via the driving-force interrupting mechanism upon its operation; and an error-operation preventing device that prevents unintentional operation of the switching operating member.

Abstract: A fluid control input device for endoscope includes a moving member that is moved in accordance with the operation for instructing the switching of a channel arranged in the endoscope by an operator, a restoring member that restores the moving member to a predetermined restoring position, an operated amount detecting member that detects the amount of movement or operated force of the moving member by the operation of the operator and outputs information corresponding to the detected amount of movement or operated force, a covering member that is connected to an exterior member of the endoscope so as to watertightly cover the moving member while permitting the movement of the moving member, and an amount-of-force changing mechanism that changes the amount of operated force of the moving member after/before a predetermined position at which the moving member is moved by the operation of the operator to the predetermined position.

Abstract: An electric bending endoscope includes a bending portion arranged to an inserting portion and a bending driving unit which bends the bending portion. In the electric bending endoscope, the bending driving unit includes a motor which generates driving force for bending the bending portion, a first unit which holds the motor, a driving force transmitting member which transmits the driving force of the motor, and a second unit which bends the bending portion by the driving force of the motor. The electric bending endoscope further includes a first holding member which detachably supports, to the first unit, a rotating shaft arranged to the driving force transmitting member of the second unit.

Abstract: An electrically-bent endoscope includes a bend driving portion for bending a bending portion. The bend driving portion has a motor for generating driving force, a gear train for transmitting driving force generated in the motor, a sprocket for converting driving force of the motor to a back and forth movement of bending operation wires for bending the bending portion at the head portion of an inserting portion, and a clutch mechanism for connecting and disconnecting driving force transmitted from the gear train to the sprocket. The clutch mechanism includes a transmitting member for connecting and disconnecting the gear train and sprocket, a thrust mechanism for moving the transmitting member in the axial direction of the sprocket and a clutch operating member, connected to the thrust mechanism, for inputting instructions for connecting and disconnecting the gear train and the sprocket.

Abstract: An electric bending endoscope according to the present invention includes a bending portion arranged to an inserting portion, a bending driving mechanism which electrically bends the bending portion, an operation input member which instructs an operation to the bending driving mechanism so that the bending driving mechanism bends the bending portion, and a bending angle holding mechanism which holds the bending angle of the bending portion.

Abstract: An electric bending endoscope includes a temperature sensor that detects the temperature of a motor as a state value indicating the driving state of a bending drive unit. A bending control device comprises: a temperature detection unit that receives the data of the temperature detected by the temperature sensor; a record unit in which the limits of motor temperature inputted in advance are recorded; a comparison unit that compares the data of the temperature sent from the temperature detection unit with the limits of motor temperature recorded in the record unit; and a notification unit that notifies that the driving state of a motor is approaching the limit.

Abstract: An electric bending endoscope includes a bending driving portion which bends a bending portion arranged to a distal side of an inserting portion, a bending operation input portion which instructs and inputs a bending operation of the bending portion, and a preventing device which prevents the bending operation of the bending portion which is not intended by an operator.

Abstract: An endoscope shape detection system has a CPU included in a control unit. The CPU performs frequency sampling of digital data to calculate coordinates indicating the spatial positions of source coils incorporated in an insertion unit of an endoscope received in a patient and of marker coils placed on a patient. An inserted state of the insertion unit of the endoscope is estimated based on the calculated coordinate data indicating the positions of the source coils. Display data based on the shape of the endoscope is produced from the calculated coordinate data indicating the positions of the source coils, and output to a video RAM. Display data of the marker coils is produced from the calculated coordinate data indicating the positions of the marker coils, and output to the video RAM. Consequently, the positions of the markers are depicted together with the shape of the endoscope. The positional relationship between the insertion unit of the endoscope and a patient's body can therefore be ascertained.

Abstract: An electrically-bent endoscope includes a bend driving portion for bending a bending portion. The bend driving portion has a motor for generating driving force, a gear train for transmitting driving force generated in the motor, a sprocket for converting driving force of the motor to a back and forth movement of bending operation wires for bending the bending portion at the head portion of an inserting portion, and a clutch mechanism for connecting and disconnecting driving force transmitted from the gear train to the sprocket. The clutch mechanism includes a transmitting member for connecting and disconnecting the gear train and sprocket, a thrust mechanism for moving the transmitting member in the axial direction of the sprocket and a clutch operating member, connected to the thrust mechanism, for inputting instructions for connecting and disconnecting the gear train and the sprocket.