Pre-modulation broadband power output device for intermediate-frequency therapeutic instrument and method thereof

Abstract

The invention provides a pre-modulation broadband power output device for an intermediate-frequency therapeutic instrument and a method thereof. The output device comprises a therapeutic input unit, alow-frequency signal unit, a pre-modulation power output unit, an intermediate-frequency signal unit and a broadband inversion unit. The low-frequency signal unit is connected with one end of the pre-modulation power output unit, the other end of the pre-modulation power output unit and the intermediate-frequency signal unit are connected with one end of the broadband inversion unit, and the other end of the broadband inversion unit is connected with an external treatment electrode slice. The method comprises the following steps: S1, inputting a treatment requirement; S2, generating a low-frequency signal, a direct-current power signal and an intermediate-frequency signal; S3, pre-modulating the direct-current power signal by using the low-frequency signal; and S4, modulating the pre-modulated direct-current power signal through the intermediate-frequency signal to obtain a modulated intermediate-frequency power signal. According to the output device and method, output signals with the same effect and better high-frequency characteristics can be obtained, the structure is simple, and the working efficiency is high.

Description

technical field [0001] The invention relates to a pre-modulation broadband power output device and a method thereof, and belongs to the technical field of therapeutic apparatus signal output. Background technique [0002] In the medical field, nerve and muscle stimulator therapeutic instruments are widely used. The most representative of this type of therapeutic instrument is the intermediate frequency therapeutic instrument. (0-150Hz) signal modulated intermediate frequency current with a certain power output. At present, in the existing technology, a power amplifier amplifies the low-frequency modulated intermediate-frequency current, and then outputs it through a transformer, and transmits it to the human body by the electrode sheet for treatment. [0003] The typical features of the above prior art are: low frequency modulation intermediate frequency → power amplification → output. Regardless of the system composed of independent oscillators, digital-to-analog converte...

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Problems solved by technology

[0005] In order to solve the problems of low working efficiency, severe heat generation, and poor signal amplification ability of the signal output circuit in the existing intermediate frequency therapeutic apparatus, the present invention proposes a pre-modulated broadband power output device and its method for intermediate frequency therapeutic apparatus. The signal pre-modulates the DC signal, and then uses the intermediate frequency signal to control the pre-modulated signal, and outputs the modulated intermediate frequency signal. The device does not use a power amplifier. On the premise of realizing the demand for intermediate frequency treatment, it solves the problems existing in the prior art

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