Abstract: The purpose is to provide an electrode layout method of a heart treatment apparatus, which is capable of improving the heart treatment efficiency by setting electrodes in the heart as well as reducing the invasion into the patient so as to effectively stimulate a site which needs to be stimulated. There is provided an electrode layout method of a heart treatment apparatus comprising: inserting at least two lines of leads which are provided to the heart treatment apparatus and which have electrodes on their distal ends, into a vein communicated to the interior of a right atrium and extending along a cardiac wall; and placing the electrodes provided on the respective leads in the vein located at approximately opposite positions across a heart.

Abstract: An ultrasound image system includes: an ultrasound probe; a signal-transmitting-and-receiving section for transmitting signals to the ultrasound probe and receiving signals from the ultrasound probe; and an image-displaying section for displaying an ultrasound image obtained by means of the signal-transmitting-and-receiving section, wherein the ultrasound probe includes: a tip section which is provided with: a plurality of ultrasound-wave-transmitting sections for transmitting ultrasound waves to an tissue; and a plurality of ultrasound-wave-receiving sections for receiving signals reflected by the tissue and obtained by means of the ultrasound-wave-transmitting section; and a flexible catheter tube provided with: a first lumen capable of inserting an instrument for treating the tissue from a proximal end section of the ultrasound probe therethrough and exposing the instrument at a position facing the tip section; and a second lumen having an maneuvering wire inserted therethrough and being capable of moving

Abstract: A medical resecting device is disclosed in which, a living organism tissue is resected with ultrasonic vibrations while the corresponding body cavity is observed with an optical observation pipe. The resecting device includes an ultrasonic vibrator for generating ultrasonic vibrations, a horn connected to the vibrator, a probe connected to the front portion of the horn to transmit the ultrasonic vibrations generated by the vibrator, the probe being provided with a rod-like shaft and a distal end portion with a resecting blade, a power source unit for supplying a drive voltage to the vibrator, and an optical observation pipe having a guide hole in which the shaft of the probe is inserted.

Abstract: A medical treatment device for resecting, e.g., a prostate or breaking a bladder stone, which includes a vibrator for generating ultrasonic vibrations, a horn connected to the vibrator, a casing for accommodating the vibrator and the horn, a probe connected to the front portion of the horn to transmit ultrasonic vibrations generated by the vibrator, and a power source unit for supplying a drive voltage to the vibrator, the power source unit having an oscillator for producing a wave having a frequency for vibrating the probe and a frequency switching circuit for selecting an oscillating frequency at which the distal end of the probe serves as a loop of vibration or a frequency at which the distal end of the probe serves as a node of vibration.

Abstract: A connecting mechanism is formed by providing grooves having angularly disposed slopes in a rotary member in a position facing the outside of guide grooves provided in a housing for engaging endoscope fitting pins and providing an energizing device biasing the rotary member for rotation in one direction so that the endoscope may be locked and fitted by the simple operation of pushing in the endoscope forward through an open end of the housing.

Abstract: An oviduct-closing apparatus includes a body having a clamping portion. The clamping portion is prepared from a shape memory alloy. The clamping portion deforms into an open state engageable with an oviduct or a closed state capable of clamping the oviduct, in accordance with temperature change.

Abstract: A ring applicator with an endoscope comprises an operation unit, an outer tube connected to the operation unit, an inner tube reciprocably inserted into the outer tube, an endoscope reciprocably inserted into the inner tube, a normally opening forceps consisting of a pair of hook-like strips secured to the distal end of the endoscope, a rubber ring mounted on the distal end portion of the inner tube, and an operation device provided at the operation unit for drawing back the endoscope only at first and then both the endoscope and the inner tube. Only by operating the operation device the rubber ring can be fed into a body cavity to clamp tissues in the body cavity, while the interior of the body cavity is being observed through the endoscope which is provided in the applicator.

Abstract: An endoscope consists of a sheath having a passage extending therethrough, a water-feeding inlet portion and a water-draining outlet portion disposed near the proximal end portion of the sheath and each having a valve. The inlet portion and the outlet portion are provided with connection hoses each consisting of two layers of flexible coil tubes. The flexibility of the connection hose can set the inlet and outlet portions in any direction, thereby enabling the endoscope to be easily handled without being obstructed by the inlet and outlet portions.

Abstract: A ring applicator with an endoscope comprises an outer tube, an inner tube reciprocatingly inserted into the outer tube and having a rubber ring removably mounted on the inner tube, and an endoscope reciprocatingly inserted into the inner tube. An open type forceps is reciprocatingly inserted into a channel of the endoscope. The applicator further comprises an operation device which is movable toward the proximal end of an operation unit connected to the outer tube, thereby pulling the forceps into the inner tube to close the forceps, then pulling both the forceps and the endoscope into the inner tube, and finally pulling the inner tube into the outer tube to remove the rubber ring from the inner tube.

Abstract: Disclosed is a celiac injector introduced into a body cavity by means of an endoscope, thereby injecting a medical fluid into desired celiac tissue, in which a medical fluid supply tube with an injector needle fixed to the tip end thereof and an elongated member fitted at its tip end with a plurality of claw wire elements are relatively slidably housed in an outer sheath. By manual operations of the respective proximal end portions of the supply tube and elongated member, the claw wire elements take hold of a tissue portion at a desired part, the needle is stabbed into the held tissue portion, and the medical fluid supplied through the supply tube is injected into the tissue by means of the injector needle.