| 摘要 |
<p>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 Ménières disease, comprises two rotary air-pump means (1, 2) of variable, controllable speed. Respective pressure sides of the two pump means (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 pump means 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 pump means (1, 2) and the two valves (5, 6).</p> |
