Abstract: An ultrasonic handpiece for use in operations comprises an oscillation source and a casing unit. The oscillation source has an ultrasonic transducer formed by plural piezoelectric layers layered one on another to form a substantially rod shape having both ends in an axial direction. A radially expanded flange is attached one end of the ultrasonic transducer. The casing unit has a cylindrical casing formed to contain the oscillation source therein, formed to have a blocking layer formed to have a predetermined length in, the axial direction, and positioned to cover both the flange and at least a first piezoelectric layer of the ultrasonic transducer in the axial direction. The casing unit also has a holder holding the oscillation source within the casing using the flange. The blocking layer is in charge of blocking (reducing or preventing) vibration and heat from being transmitted to the outer surface of the casing.

Abstract: In a compact radio frequency module, a first chip forms a heater element and a second chip forms a device whose operating characteristics vary with temperature change or whose maximum operating temperature is lower than the maximum operating temperature of the first chip. A multilayer substrate has a plurality of dielectric layers and a plurality of conductor layers and mechanically supports the firs chip and the second chip with some of the conductor layers electrically connected with these chips. The module can conduct the heat generated by the first chip throughout the module; guide the heat generated by the first chip from the module's top face side to its bottom face side; and interrupt the heat conduction from the first conductor pattern on which the first chip is placed to the second conductor pattern on which the second chip is placed.

Abstract: An ultrasonic lithotripter comprising a first transmission probe which has a hollow portion in the form of a through hole and transmits ultrasonic vibration and a superfine second transmission probe which can be passed through the hollow portion of the first transmission probe. An object of manipulation is held by means of the second transmission probe as it is manipulated by means of the first transmission probe.

Abstract: An endoscopic lithotripsy probe apparatus includes a probe, ultrasonic-vibration source, mechanical shock generation source, and switch-mechanism. The ultrasonic-vibration source is detachably attached to the probe to transmit an ultrasonic-vibration to the probe in a state in which the proximal end of the probe is connected to the ultrasonic-vibration source. The mechanical shock generation source, which is disposed on the side of the proximal end of the probe, applies a force to the ultrasonic-vibration source in a state in which the ultrasonic-vibration source is detached from the proximal end of the probe, and allows the ultrasonic-vibration source to collide with the proximal end of the probe so that a mechanical shock is applied to the probe. The switch-mechanism switches a state in which the ultrasonic-vibration from the ultrasonic-vibration source is transmitted to the probe and a state in which the mechanical shock from the mechanical shock generation source is transmitted.

Abstract: In an electronic circuit equipment using a multilayer circuit board on which a semiconductor chip is mounted, a thin film capacitor is provided on the multilayer circuit board. Moreover, a first electrode of the thin film capacitor and a first wiring of the multilayer circuit board are electrically connected to each other, and a second electrode of the thin film capacitor and a second wiring of the multilayer circuit board are electrically connected to each other, respectively. Furthermore, a thin film dielectric of the thin film capacitor was grown epitaxially with the first electrode as its base. The employment of the multilayer circuit board makes it possible to provide the electronic circuit equipment using the multilayer circuit board that includes the built-in thin film capacitor having the high dielectric-constant thin film dielectric.

Abstract: An artificial bone material having a satisfactory compatibility with a human body and capable of effecting osteogenesis satisfactorily which is obtained by integrating a marrow cell in a porous ceramic consisting of &bgr;-tricalcium phosphate.

Abstract: A calculus treatment apparatus includes first and second probe which transmit first and second mechanical energy to a distal end side thereof and pulverize a calculus by the first and second mechanical energy, and first and second mechanical energy generating devices which are arranged on a proximal end side of the first and second probes and generate the first and second mechanical energy. A probe arrangement structure is provided in which the first probe and the second probe are arranged substantially coaxially or concentrically.

Abstract: To provide a novel wireless handset achieving downsized formation and promotion of performance by using independent antennas for transmission and receiving and restraining interference between the antennas for transmission and the antennas for receiving in a communication system. In the communication system, different frequencies for transmission and receiving are simultaneously used, in a wireless handset used in the communication system in which the different frequencies for transmission and for receiving are simultaneously used, a magnetic current antenna for transmission and a magnetic current antenna for receiving are arranged in parallel with each other such that respective magnetic currents are disposed on a straight line.

Abstract: To provide an antenna element having a radiation electrode formed mainly on one surface of a dielectric substrate. The radiation electrode is substantially symmetric in form with respect to the center thereof, and has a first half and a second half with the same direction of main polarization of radiation emitted therefrom. Each of the halves of the radiation electrode may be a quarter-wave antenna for a wavelength of the emitted radiation. A power supply conductor to be connected to a high frequency signal source is connected to the first half of the radiation electrode, and a ground conductor to be connected to a ground is connected to the second half. A total impedance of the first half of the radiation electrode and the power supply conductor and a total impedance of the second half of the radiation electrode and the ground conductor can substantially match to one another, so that resonance between the halves of the radiation electrode can be enhanced and a wider bandwidth can be realized.

Abstract: The module comprises at least: a first chip forming a heater element; a second chip forming a device whose operating characteristics vary with temperature change or whose maximum operating temperature is lower than the maximum operating temperature of the first chip; and a multilayer substrate which is comprised of a plurality of dielectric layers and a plurality of conductor layers and mechanically supports the first chip and the second chip with some of the conductor layers electrically connected with these chips. The module has at least one of the following means: means for conducting the heat generated by the first chip throughout the module; means for guiding the heat generated by the first chip from the module's top face side to its bottom face side; and means for interrupting heat conduction from the first conductor pattern on which the first chip is placed to the second conductor pattern on which the second chip is placed.

Abstract: The present invention provides a manufacturing method of an electronic circuit device including a multi-layer circuit board incorporated with a thin film capacitor small in size and of high performance capable of attaining higher capacitance value with a thin dielectric film of high dielectric constant and with favorable film quality. A first electrode layer and a thin film dielectric layer are laminated continuously in this order in one identical to laminate each of the layers on a leveled substrate in one identical chamber and then the first electrode layer is fabricated a conductor pattern.

Abstract: The present invention provides a centrifugal separator comprising a top lid, a rotatable basket, a drive unit for the rotatable basket and an outer case, the rotatable basket and the drive unit being mounted on the top lid, the rotatable basket and the outer case having a cake outlet at the bottoms thereof, wherein the top lid is fixedly mounted on a stand via supporting legs, the outer case being supported by and attached to the top lid, the outer case being detachable from the top lid for cleaning and movable downward when detached, whereby the rotatable basket can be exposed to the outside, the centrifugal separator having excellent operability, cleanability, visual observability and antipollution property.

Abstract: A novel wireless handset is provided which can provide control so as to tune a center frequency of impedance matching of a tunable antenna to a call frequency. A first control signal sent from the central processing unit 51 to the synthesizer 41 or data used in the central processing unit to generate the first control signal is used to generate a second control signal by the central processing unit or the control signal generator 52 provided in the outside connected with the central processing unit, and the second control signal is applied to the control circuit 30 for center frequency of impedance matching, whereby center frequencies of impedance matching of the tunable antenna 10 are controlled.

Abstract: In order to make a wireless handset smaller, a novel slot antenna is provided which can simplify the manufacture process and can be connected to a tunable circuit. A slot is disposed in a narrow side surface of a conductive cube, and a power supply conductor is arranged in the slot so as to intersect the slot. A variable impedance circuit is connected between conductors on opposite edges of the slot in a position at a constant distance from one of the ends of the slot. The control signal varies impedance of the variable impedance circuit so as to control the resonant frequency of the antenna. Transmit/receive antennas are connected by a support so as to align the directions of the main polarizations, and then are arranged on the circuit board of the wireless handset.

Abstract: An antenna element comprises an insulating substrate; a first conductor layer formed continuously on an upper surface, a bottom surface and at least one side surface of the insulating substrate; a strip gap consisting of a portion in which a conductor layer is not formed on an upper surface and/or a side surface of the insulating substrate; and a second strip conductor layer formed in the slot or in an insulated extension connected to the strip gap thereby being electrically insulated from the first conductor layer, the second conductor layer being electrically connected to a feeder. The first conductor layer formed on an upper surface of the insulating substrate is divided by at least one slit gap extending substantially in perpendicular to the direction of electric current at a position separated from the strip gap.

Abstract: To provide an antenna element having a radiation electrode formed mainly on one surface of a dielectric substrate. The radiation electrode is substantially symmetric in form with respect to the center thereof, and has a first half and a second half with the same direction of main polarization of radiation emitted therefrom. Each of the halves of the radiation electrode may be a quarter-wave antenna for a wavelength of the emitted radiation. A power supply conductor to be connected to a high frequency signal source is connected to the first half of the radiation electrode, and a ground conductor to be connected to a ground is connected to the second half. A total impedance of the first half of the radiation electrode and the power supply conductor and a total impedance of the second half of the radiation electrode and the ground conductor can substantially match to one another, so that resonance between the halves of the radiation electrode can be enhanced and a wider bandwidth can be realized.

Abstract: In an electronic circuit equipment using a multilayer circuit board on which a semiconductor chip is mounted, a thin film capacitor is provided on the multilayer circuit board. Moreover, a first electrode of the thin film capacitor and a first wiring of the multilayer circuit board are electrically connected to each other, and a second electrode of the thin film capacitor and a second wiring of the multilayer circuit board are electrically connected to each other, respectively. Furthermore, a thin film dielectric of the thin film capacitor was grown epitaxially with the first electrode as its base. The employment of the multilayer circuit board makes it possible to provide the electronic circuit equipment using the multilayer circuit board that includes the built-in thin film capacitor having the high dielectric-constant thin film dielectric.

Abstract: In order to make a wireless handset smaller, there is constructed a novel slot antenna which can simplify the realizing manufacture process and can be connected to a tunable circuit hard to affect the radiated power, so as to mount this antenna to construct the wireless handset.

Abstract: A wireless handset with a built-in tunable antenna has a circuit that tunes the center frequency of impedance matching of the antenna to a call frequency. The wireless handset is used in a communication system that switches between a plurality of call channels. For each call, by adaptively changing the center frequency of impedance matching of the antenna to the frequency used for the call, the frequency band that the antenna should have can be decreased. A first control signal containing call frequency information or data used in a central processing unit to generate the first control signal is used to generate a second control signal in a control signal generator, whereby the center frequency of impedance matching of the tunable antenna can be tuned to a call frequency without having to provide an additional circuit for specifying the call frequency information.

Abstract: In a coaxial resonant slot antenna including a flat rectangular conductive box having its top plate with a slot being defined therein, and a strip conductor disposed inside the box and electrically insulated from the box while high frequency or RF power is fed to the strip, an island conductor is provided in the slot for defining a capacitance between itself and the frame, which capacitance is rendered variable in value by use of a variable capacitance circuit.