A kind of pre-modulation broadband power output device and method for intermediate frequency therapeutic apparatus

Abstract

The present invention proposes a pre-modulated broadband power output device for an intermediate frequency therapeutic instrument and a method thereof. The output device includes a treatment input unit, a low-frequency signal unit, a pre-modulated power output unit, an intermediate frequency signal unit, and a broadband inverter unit; The low-frequency signal unit is connected to 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 respectively connected to one end of the broadband inverter unit, and the other end of the broadband inverter unit is connected to an external treatment electrode sheet. The steps of the method are as follows: S1, inputting treatment requirements; S2, generating a low-frequency signal, a DC power signal, and an intermediate frequency signal; S3, using the low-frequency signal to pre-modulate the DC power signal; S4, modulating the pre-modulated DC power signal through the intermediate-frequency signal, Obtain the modulated intermediate frequency power signal. The output device and method of the invention can obtain output signals with the same effect and better high-frequency characteristics, and the structure is simple and the work 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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