SU1461428A1 - Apparatus for destroying atherosclerotic deposits in vessels - Google Patents

Abstract

The invention relates to medical technology, in particular to ultrasonic devices for the treatment of atherosclerosis. The aim of the invention is to reduce the trauma of surrounding tissues by controlling the degree of sediment destruction. For this purpose, a broadband generator with adjustable amplitude-frequency characteristic 1, a catheter 2 with channels for input and output of electrical signals 3, an ultrasonic oscillator 4, an ultrasonic oscillator 5, a spectrum analyzer 6, a comparison unit 7 and a reference voltage block are inserted into the device. 8, characterizing the reflected signal, obtained from a healthy part of the vessel. The described device automatically adjusts the power of ultrasonic radiation as the atherosclerotic deposits are destroyed, reducing it to zero when the spectrum of the reflected signal coincides with the spectrum of the reference signal. 1 il. e (o

Description

The catheter 2 is inserted into the vessel affected by atherosclerosis. With the aid of generator 1, consisting, for example, of N amplitude adjustable narrowband generators, an initial signal is generated. The source of ultrasonic vibrations 4 converts electrical oscillations into mechanical ones. Ultrasonic waves reflected from atherosclerotic plaques enter the ultrasound receiver 5 and through channel 3 to the spectrum analyzer 6. The reflected signal has a complex amplitude-frequency characteristic containing information about the size and structure of atherosclerotic deposits. Spectrum Analyzer 6 is also a system of N filters operating in parallel. Comparison unit 7 compares the amplitudes of the signals in each and N channels with the amplitude of a similar reflected signal received from a healthy part of the vessel - and invented

A device for destroying atherosclerotic deposits in vessels, containing a catheter, an emitter of ultrasonic vibrations and a generator, characterized in that, in order to reduce the trauma of surrounding tissues by controlling the degree of sediment destruction, an ultrasound receiver is installed at the working end of the catheter, reflected to the spectrum analyzer the signal, the outputs of which are connected to the inputs of the comparison unit, the other inputs of which are connected to the unit of reference voltages, the outputs of the comparison unit They are connected to the control inputs of a wideband oscillator with an adjustable amplitude-private characteristic, the output of which is connected to the emitter of ultrasonic vibrations.

Editor K.Krupkina

Compiled by Yu.Ilinykh

Tehred M. Khodanich Proofreader S. Cherni

Order 626/3

Circulation 644

VNIIPI State Committee for Inventions and Discoveries under the State Committee on Science and Technology of the USSR 113035, Moscow, Z-ZZ, 4/5 Raushsk nab.

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Claims (1)

Claim A device for destroying athero30 sclerotic deposits in vessels, containing a catheter, an emitter of ultrasonic vibrations and a generator, characterized in that, in order to reduce the trauma of surrounding tissues by controlling the degree of destruction of the deposits, an ultrasonic vibrations receiver is additionally installed on the working end of the catheter connected to the analyzer 4Q of the spectrum of the reflected signal, the outputs of which are connected to the inputs of the comparison unit, the other inputs of which are connected to the reference voltage unit, the outputs of the The connections are connected with the control inputs of a broadband generator with an adjustable amplitude-frequency characteristic whose output is connected to an emitter of ultrasonic vibrations.