Abstract: In a disclosed composite plating method for a hollow member, an insertion electrode is loosely inserted with a space into a cylinder of a hollow member, a composite plating solution supplied from a solution supply pipe is circulated into the space of the cylinder, a base metal electrode is connected to the hollow member and composite plating is applied onto the inner peripheral surface of the hollow member. The current density between the insertion electrode and the inner peripheral surface of the hollow member is set at a low value at the beginning and is increased after a lapse of a predetermined time. More preferably, bubbles are produced by supplying gas into the composite plating solution almost simultaneously with the above-mentioned increase of the current density.

Abstract: An ultrasonic treatment apparatus comprises at least one hand piece, a plurality of probes, and an ultrasonic drive device. The hand piece has an ultrasonic oscillation device for generating ultrasonic vibration. Each probe is adapted to be attached to the hand piece and designed to transmit the ultrasonic vibration generated by the hand piece. The ultrasonic drive device is connected to the hand piece, for driving the ultrasonic oscillation device.

Abstract: An ultrasonic aspirator has a probe having the inside path made an aspirating path by being provided on the base side with an ultrasonic vibrator. The probe is used as an ultrasonic vibration transmitting member and is in contact at the tip with an object within a body cavity to crush the object and to discharge the crushed object out of the probe through the aspirating path. A device, for detecting a break of the probe, is provided so that, when the probe breaks, the vibration of the above mentioned ultrasonic vibrator will be stopped by a signal from the detecting device.

Abstract: An ultrasonic treatment apparatus comprises a hand piece, and an RF power supply unit. The hand piece includes vibrator cover, a sheath connected thereto, a hollow cylindrical member, an ultrasonic vibrator in the cover for generating ultrasonic vibrations, a probe arranged in the sheath, for externally transmitting ultrasonic vibrations generated by the vibrator, and a cord for transmitting a high-frequency current from the RF power supply unit to the probe. The cover and sheath are composed of an insulating member, for preventing the high-frequency current transmitted by the probe from being externally leaked.

Abstract: An ultrasound type treatment apparatus includes an inner sheath covering an ultrasonic transmission member having a first suction passage and defining a space relative to the ultrasound transmission member and an outer sheath covering the inner sheath and defining a space relative to the inner sheath. In the treatment apparatus, a liquid medium supply passage is provided at one of the space between the ultrasound transmission member and the inner sheath and space between the inner sheet and the outer sheet to supply a liquid medium to the distal end of the ultrasound transmission member. A second suction passage is formed at the other of the space between the ultrasound transmission means and the inner sheath and space between the inner sheath and the outer sheath. The first suction passage is connected by a suction tube to the second suction passage.

Abstract: A cerebral surgery endoscope apparatus comprises a stereotaxic instrument secured to the head of a patient and adapted to effect positioning of an affected part; an adjusted support means whose inserting direction is determined by its orientation to the stereotaxic instrument and which determines the direction in which a treating instrument is inserted into the head of the patient; a viewing device such as an endoscope supported on the support means and having a channel into which a treating instrument can be inserted, the treating instrument being inserted into a channel of the viewing device and then into the head of the patient. A fixing device is connected to the stereotaxic instrument and adapted to secure the support means, the viewing device and/or the treating instrument in a fixed position on with respect to the affected part.

Abstract: A process for producing a cylindrical reinforcing fibrous molding by sealing openings at opposite ends of a porous cylindrical disintegratable mold, immersing the mold into an aqueous solution of a molding material containing reinforcing fibers and an inorganic binder, and depositing the molding material onto the outer peripheral surface of the mold by applying suction within the mold to form a molding blank; pressing the molding blank against the mold to adjust the shape of the molding blank; disintegrating the mold to remove it from the blank; and heating the molding blank to partially bond the reinforcing fibers with the inorganic binder.

Abstract: An ultrasound type treatment apparatus includes an ultrasonic oscillation device for outputting an ultrasonic oscillation wave, a drive circuit for driving the ultrasonic oscillation device, a probe connected to the ultrasonic oscillation device to transmit that ultrasonic oscillation wave to an affected region of interest of a human being, a sheath formed around the probe, through which cooling medium is passed and a supply tank for supplying cooling medium to the sheath. In this treatment apparatus, an arithmetic operation circuit monitors a drive state of the ultrasonic oscillation device, a comparator is provided for receiving monitor information from the arithmetic operation circuit and for determining whether or not the supply of cooling medium to the sheath is normal and a controller is provided for stopping a drive of the ultrasonic oscillation device when the supply of the cooling medium is determined by the comparator as being not normal.

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: An ultrasonic treating apparatus includes an inpedance detection unit for detecting the impedance of an ultrasonic vibration element for transmitting ultrasonic vibrations and a determining unit for determining whether the ultrasonic vibration element is good or not. If the ultrasonic vibration element is found not to be good, then a control unit inhibits ultrasonic vibrations from being generated from the ultrasonic vibration element. It is thus possible to prevent any breakage of the apparatus.

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: An ultrasonic vibration treatment apparatus comprising an ultrasonic vibration treatment device including an ultrasonic vibrator and an ultrasonic wave transmitter probe, a detecting element opposing the transmitter for applying light to the transmitter and receiving the light reflected from the transmitter, thereby to detect the amplitude of vibration of the treatment device, and a power source controller for reducing the power supplied to the vibrator, or stopping the power supply to the vibrator, in accordance with a detection signal output by the detecting element. The detecting element quickly detects the charges in the amplitude of vibration of the ultrasonic vibration treatment device, said charge in the amplitude representing the charges in the vibration condition of the vibration treatment device from actual driving to idling, or vice versa.

Abstract: A therapeutical device using ultrasonic vibration includes an ultrasonic vibration generator for generating ultrasonic vibration in the axial direction of the device and in a direction different from the axial direction of the device, an amplifier connected to the ultrasonic vibration generator for amplifying the ultrasonic vibration generated, and a vibration transmitting connected to the amplifier member for transmitting the ultrasonic vibration.

Abstract: An electronic endoscope system has an elongated rigid inserting section and a relay optical system disposed therein. The relay optical system transfers an optical image. A imaging device is disposed at a focus position of the relay optical sysetm in a face-to-face relationship with the imaging surface thereof.

Abstract: This rigid electronic endoscope is formed of an endoscope body and an elongate tubular guide tube. An insertable part to be inserted through the guide tube is provided in front of this endoscope body. A solid state imaging device as an imaging means is provided in the tip part of this insertable part and a supporting part of a cross-sectional area smaller than of this tip part is provided in the rear of this tip part. A space as a treating tool inserting path or as a liquid feeding and sucking tube path which can feed and drain an irrigating liquid is formed between this supporting part and the inner surface of the guide tube.

Abstract: A resectoscope comprising a sheath body having an elongated hollow sheath to be inserted into a urethra, a handle having a guide part for guiding an optical sighting tube and a slider sliding in the axial direction along the sheath body. An optical sighting tube for observation is inserted through the guide pipe of the handle and is inserted within the sheath. An electrode inserting hole is provided in the slider and opens on the front surface of the slider and an electrode device removably inserted and connected in the electrode inserting hole, is inserted within the sheath. The electrode has a tip electrode which projects out of and retracts into the sheath by means of the movement of the slider in the axial direction. A step is formed between the guide pipe and the electrode inserting hole on the front surface of the slider, the step having the step surface connecting the two surfaces forming the step.

Abstract: A resectoscope comprising a hollow sheath, an observing scope inserted in the sheath, a resecting electrode inserted through the sheath and a handle part having a slider connected to the sheath, having the electrode connected at the base end to it and moving this electrode forward and rearward in the axial direction, wherein is provided an electrode fixing mechanism having an inserting hole which is provided in the slider and in which the electrode is inserted at the base end, an engaging part provided in the base end part of the electrode inserted in the inserting hole, an electrode fixing means having a locking part engaged with the engaging part provided in the electrode to lock the electrode and movable in the direction intersecting with the axis of the electrode, an energizing device energizing the electrode fixing member in the direction of fixing the electrode, an electrode fixing mechanism fixing device fixing the electrode fixing member and energizing device to the slider and a position adjusting dev

Abstract: A resectoscope device comprises a sheath body having an elongated hollow sheath to be inserted into a urethra. A handle part has a slider connected to the sheath body and slides in the axial direction. An observing scope is inserted into the sheath through the handle part and sheath body. An electrode is inserted through the sheath, and is removably connected at the rear end to the slider. The electrode has a resecting part that can be projected out of and retreated into a beak opening at the tip of the sheath by the sliding operation in the axial direction of the slider. A stabilizer is provided in the electrode and the scope is able to be inserted therethrough so that a forked part of the electrode may be housed in contact with the inner peripheral surface of the beak and the resecting part may be housed without catching on the beak opening.

Abstract: A resectoscope comprises a plurality of sheaths having different inner diameters, a plurality of optical observation tubes having different view field directions and insertible into the corresponding sheaths, and a plurality of electrode rods which are provided with electrode sections bent at different angles for different view field directions and having different sizes and which are insertible into the corresponding sheaths. A resectoscope is assembled from one selected sheath, one selected optical observation tube and one selected electrode rod. In order to facilitate the correct assembly of these various parts, the electrode rods have a first color mark capable of distinguishing the different angles of the electrode sections and a second color mark capable of distinguishing the different sizes of the electrode sections. The respective sheaths have a third color mark capable of distinguishing their different inner diameters.

Abstract: A method for the high speed chromium plating of piston rings, cylinder liners and the like wherein the cathodic workpiece is rotated at a peripheral speed of 1-4 m/sec. relative to a concentrically disposed anode. The latter may comprise a single spoked member or a plurality of rectangular pieces to thereby create a turbulence in the electrolyte bath. When a cylindrical anode is used, a bladed agitator is secured to the rotating workpiece to generate turbulence. The interelectrode spacing is from 0.1 to 4t cm with a multipolar anode, where t is the thickness of an anode pole. The current density is from 200 - 600 amps/dm.sup.2, and the bath temperature is from 20.degree. - 50.degree. C or from 65.degree. - 80.degree. C, depending on the plating characteristics desired.