| 摘要 |
PCT No. PCT/SE85/00323 Sec. 371 Date Apr. 16, 1986 Sec. 102(e) Date Apr. 16, 1986 PCT Filed Aug. 30, 1985 PCT Pub. No. WO86/01399 PCT Pub. Date Mar. 13, 1986.An apparatus for producing pressure pulses intended for application to the external acoustic meatus of a patient, for the purpose of influencing the hydrodynamic system of the inner ear in the treatment of certain diseases, particularly Menieres disease, comprises two rotary air-pumps (1, 2) of variable, controllable speed. Respective pressure sides of the two pumps (1, 2) can be selectively connected to and disconnected from a common pressure-pulse output line (7), by means of a respective controllable valve (5, 6). The pumps are driven by electric motors (3, 4) and the rotational speed of the motors and the settings of the electrically operable valves (5, 6) are controlled by a control unit (9) incorporating a microprocessor, in response to a program relating to a desired shape, frequency, amplitude, duration etc. of the generated pressure pulses, this program being stored in the control unit. The apparatus also includes a pressure transducer (8) which is connected to the output line (7) and which produces a signal representing the momentary pressure prevailing in the output line (7), this signal being applied to the control unit and used therein to control the two pumps (1, 2) and the two valves (5, 6).
|
