An electrodeless medium frequency electrotherapy apparatus

Abstract

The invention discloses an electrodeless intermediate-frequency electro-therapeutic apparatus based on the principle of electromagnetic conversion and electromagnetic induction of a transformer. One coil is driven with an intermediate-frequency electro-therapeutic pulsating current, and the coil is equivalent to the primary side of the transformer. The conductive tissue in the human body can be equivalent to the secondary side of the transformer. The change of primary current can cause the change of induction current in the human body serving as the secondary side. Thus, the purpose of electrodeless electrotherapy is achieved. The output coil of the intermediate-frequency electro-therapeutic apparatus can contact the human body not directly. An alternating magnetic field is generated around the coil. The magnetic field can pass through the clothes and skin unimpeded and go beneath the skin and inside the tissue to output an intermediate-frequency current. In order to reach the technical index of intermediate-frequency electrotherapy, a semiconductor switching device is used to achieve the technical parameters and the clinical treatment function of common intermediate-frequency electro-therapeutic apparatuses with use of a 1-3KHz base intermediate-frequency sine wave current and a 1-10Hz low frequency modulation and amplitude modulation mode.

Description

technical field [0001] The invention belongs to the field of medical instruments, in particular to an electrodeless intermediate frequency electrotherapy instrument, which is a device of an electrodeless intermediate frequency electrotherapeutic instrument utilizing the principle of electromagnetic induction. Background technique [0002] The medium frequency electrotherapy instrument is a method for physical therapy and rehabilitation of the human body with alternating current with a frequency of 1kHz-100kHz. Intermediate-frequency electrotherapy uses more than two electrodes to inject intermediate-frequency current into the subcutaneous tissue through the human skin, mainly including equal-amplitude intermediate-frequency electrotherapy, low-frequency modulation intermediate-frequency electrotherapy, and interference electrotherapy. [0003] Intermediate frequency electrotherapy is widely used in rehabilitation and physiotherapy departments. It mainly has analgesic effects...

AI Technical Summary

Problems solved by technology

The treatment operation is troublesome and time-consuming

[0005] The electrodes of intermediate frequency electrotherapy directly contact the human skin, which involves the biocompatibility of the electrodes, which can easily cause skin allergies, electrochemical reactions, skin redness, and excessive current can burn the skin and cause medical accidents

[0006] The electrodes of the intermediate frequency electrotherapy instrument are all non-disposable electrodes, which are difficult to sterilize, and contact with the skin is likely to cause iatrogenic accidents such as skin allergies or cross-infection

[0007] There are more than 2 output electrodes of intermediate frequency electrotherapy. The current enters the human tissue through the electrode and the skin, and then returns to the equipment through another electrode to form a circuit. Because the skin resistance in the circuit is large, the voltage drop is large, the power consumption is large, and the skin feels There are many fibers, which can be over-stimulated and cause acupuncture-like nerve irritation pain, and the treatment lacks comfort

[0008] Since the electrodes are in direct contact with the skin, the skin needs to be exposed directly, and usually one has to take off one’s clothes and trousers, causing inconvenience in treatment, especially in winter, and catching a cold

[0009] Electrodes cannot be placed on damaged or infected areas of the skin, limiting the use of intermediate frequency electrotherapy

[0010] In addition, commercial intermediate frequency electrotherapy instruments all use mains power as the power supply of the equipment. If the equipment is damp or malfunctions and leaks electricity, there may be a danger of electric shock for doctors and patients.

[0011] The present invention aims to develop an electrodeless intermediate frequency electrotherapy technology, using the principles of electromagnetic coupling, electromagnetic conversion and electromagnetic induction, adopting a physically isolated intermediate frequency electrotherapy mode without electrodes, avoiding the disadvantages of using electrode output for the above intermediate frequency electrotherapy

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