摘要:
A treating device is inserted into the body cavity of a subject through a sheath by freely moving an operation wire in a forward/backward direction. A treating unit is connected to the forward end of the operation wire and includes a plurality of elastic wires extending from the forward end to the back end, a tip cap for holding the forward ends of the elastic wires, and a holding member for holding the back ends of the elastic wires. The respective elastic wires have first to fifth bent points in a position from the forward end to the back end thereof. The first and fifth bent points are projected inwardly relative to the center of the treating unit and second to fourth bent points are projected outwardly away from the center of the treating unit. All sections or sides each defined between the adjacent corresponding bent points of elastic wires are inclined at given angles to the center axis of the treating unit when they are spread out from the distal end of the sheath.
摘要:
An endoscopic treatment system 1 of the present invention includes an overtube 2 that is inserted into the body of a patient. An endoscope 7 and a suturing device 8 are inserted into the overtube 2. The overtube 2 has a long and flexible tube main body 3, and a chamber 4 is provided at the distal end of the tube main body 3. The chamber 4 has a lateral hole 10 formed on the lateral surface thereof. The width of the lateral hole 10 is set such that a lesion can be drawn into the lateral hole 10 while preventing other organs on the periphery of the lesion from being drawn into the lateral hole 10.
摘要:
In a mucosa excising device using an endoscope according to the present invention, engagement pieces are provided in the vicinity of a claw portion formed at an end edge of a cap, the engagement pieces press the snare wire arranged along the claw portion, both the claw portion and the engagement pieces hold the snare wire, and the snare wire of a high-frequency snare is prevented from accidentally coming off at the time of insertion into a body cavity or during a treatment in the body cavity when conducting endoscopic mucosal resection.
摘要:
A apparatus for ligating living tissues comprises an introducing tube capable of being inserted into a living body cavity, at least two or more manipulating wires movably inserted into the introducing tube, and at least two or more clips having a proximal end portion, a pinch section being formed at a distal end of an arm section extending from the proximal end. This clipping apparatus is characterized in that a plurality of clips are arranged in series in the introducing tube so as to engage the clip and the manipulating wire with each other, respectively.
摘要:
This endoscope treatment tool insertion-extraction system is provided with: a first treatment tool and a second treatment tool which are insertable into and retractable from a forceps channel of an endoscope; a first insertion-extraction mechanism which feeds the first treatment tool into the forceps channel or removes the first treatment tool from the forceps channel; a second insertion-extraction mechanism which feeds the second treatment tool into the forceps channel or removes the second treatment tool from the forceps channel; one driving section which drives the first insertion-extraction mechanism and the second insertion-extraction; and a selection section which selectively engage the driving section with one of the first insertion-extraction mechanism and the second insertion-extraction mechanism.
摘要:
A code NCO is provided which correctly outputs a predetermined code enable signal by executing a simple control, depending on a frequency of a clock signal, with an optimal circuit scale. A multiplexer 1 receives integers of N and M which are relatively prime, and outputs either of them to an adder 2, depending on an output signal of a comparator 6. The adder 2 adds an integer latched by the register 5 and an integer output by the multiplexer 1, and outputs the result via a multiplexer 4 to the register 5. The register 5 latches and outputs the received integer to the comparator 6 with a frequency fs of a sampling clock signal SCLK. In accordance with a threshold set based on the integers of N and M and the number L of bits of the adder 2 or the register 5, the comparator 6 outputs a signal having the High state only when the output integer of the register 5 satisfies the threshold condition. The code NCO outputs this signal as a code enable signal having a frequency fo.
摘要:
The rear end side of treatment equipment-side duct which enables treatment equipment provided within an insertion unit to be inserted, and which also serves as a suction duct, is disposed generally in parallel with the tip side of a suction-side duct extending forward from a universal cable side so as to be an opening end, and both opening ends are detachably attached with a filter unit in which a forceps plug portion serving as a suction duct opening, and a filter portion for retrieving (storing) tissue by suction are provided, and a suction switchover valve for performing a suction switchover operation is provided at the backward side thereof, thereby enabling retrieval of tissue without influence of the periphery of the suction switchover valve. Thus, defects due to a long duct can be eliminated, and tissue can be retrieved without influence of the periphery of the suction switchover valve.
摘要:
This endoscopic treatment system is provided with an insertion-retraction and rotating device for a treatment tool, which performs an insertion-retraction operation along a direction of an axis of a treatment tool and a rotating operation around the axis, of the treatment tool inserted in a channel of an endoscope.
摘要:
The high frequency surgical instrument includes the electrical connection portion configured to detachably connect the connection cord designed for an external high frequency power source, to the slider, and the instrument has such a structure in which the contact pin configured to lead the connection cord backward in substantially parallel with the advancing and retreating direction of the slider is provided in substantially parallel with the advancing and retreating direction of the slider while the connection cord is connected to the electric connection portion.
摘要:
A calculus crushing apparatus includes a flexible sheath for insertion into a body cavity and an operation wire slidably inserted in the sheath. A basket for holding a calculus is fixed to the distal end of the operation wire. The basket is formed of a plurality of elastic wires. A connecting rod is connected to the proximal end of the operation wire. By moving the connecting rod by an operation mechanism, the operation wire slides in the sheath, so that the basket is projected from or retracted in the sheath. The connecting rod has a disconnecting portion which is weaker than the elastic wires and operation wire against tension.