Abstract:
An apparatus comprising: at least one input configured to provide at least one input signal; a mode determiner configured to determine at least one mode of condition based on the at least one input signal; a controller configured to control the reproduction of at least one audio signal based on the at least one mode of condition; and at least one actuator configured to reproduce the at least one audio signal within the apparatus by vibration of a surface.
Abstract:
Phacoemulsification apparatus includes a phacoemulsification handpiece having a needle and an electrical circuitry for ultrasonic vibrating the needle. A power source provides pulsed electrical power to the handpiece electrical circuitry and an input is provided for enabling a surgeon to select an amplitude of dislighted pulses and a pulse width. A control system and pulse duty cycle is provided for controlling the off duty cycle to insure heat dissipation before a subsequent pulse is activated, including a foot pedal switch.
Abstract:
A drive for driving a vibration source comprises a sound source (10) for generating tone signals, a DC motor (24) as a vibration source, a low-pass filter (LPF) (16) for extracting low-frequency components from tone signals output from the sound source (10), a detector circuit (18) for detecting the output signal from the low-pass filter (16), a rectifier circuit (20) for rectifying the output from the detector circuit (18), and an amplifier (22) for driving the vibration source based on the low-frequency components extracted by the low-pass filter (16).
Abstract:
The invention concerns a communication system between a portable unit (1), such as a watch, and a communication terminal (2) such as a personal computer, characterised in that the communication terminal (2) comprises at least means for transmitting (6) a sound signal bearing an information, and the portable unit (1) comprises at least processing means (14) for processing data, and receiving (8) and converting (12) means for picking up said sound signal and converting said sound signal into data to be processed by said processing means (14).
Abstract:
An apparatus for tuning and controlling an ultrasonic handpiece having a programmable broad spectrum source, a torsional single frequency source and a longitudinal single frequency source that generate a drive signal for an ultrasonic handpiece and a digital signal processor for analyzing a response signal generated by the handpiece in response to the drive signal and generating and adjusting signal for adjusting the torsional single frequency source and the longitudinal single frequency source.
Abstract:
A nebuliser for use in administering a medicament to a patient undergoing treatment for example, comprises an ultrasonic piezoelectric transducer (60) and a transducer drive system (D) which is caused to drive said transducer at or near its anti-resonant frequency. There is also provided means to optimise nebulised fluid particle size and transfer to the patients lungs for example, by operating at an anti-resonant frequency in the range of 1.36 to 1.56 MHz and having a single outlet baffle and relatively short outlet tube (24) arrangement.
Abstract:
A nebuliser for use in administering a medicament to a patient undergoing treatment for example, comprises an ultrasonic piezoelectric transducer (60) and a transducer drive system (D) which is caused to drive said transducer at or near its anti-resonant frequency. There is also provided means to optimise nebulised fluid particle size and transfer to the patients lungs for example, by operating at an anti-resonant frequency in the range of 1.36 to 1.56 MHz and having a single outlet baffle and relatively short outlet tube (24) arrangement.
Abstract:
The dental descaling device comprises essentially a hollow sleeve and, arrranged inside, a piezoelectric transducer (4) which vibrates and supports a scraper (2) of which the end comes out of the sleeve, and an amplifier (8) connected to the transducer. The transducer is comprised of the base (20), of a series of piezoelectric pads (22a...22f) on the faces of which are arranged electrodes (23a...23g) connected so as to define an input (25, 24) and an output (26, 24), and of a head (21) to which the scraper is coupled. The amplifier comprises an input (32, 46), an output (39, 46) and two supply terminals (37, 44) receiving, by means of a cable connected to an outer voltage source, a low direct voltage (U). The output and the input of the transducer are connected respectively to the input and the output of the amplifier in order to form an oscillator of which the frequency is determined by the resonance frequency of the transducer coupled to the scraper.