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Magnetic stimulator for reducing power and control method thereof

A technology of magnetic stimulation and power consumption, applied in magnetic therapy, electrotherapy, treatment, etc., can solve the problems of limiting high-frequency application of magnetic stimulation, and achieve the effect of reducing power consumption

Inactive Publication Date: 2009-09-16
SHENZHEN DELICA MEDICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking the commonly used transcranial nerve magnetic stimulation as an example, the energy required for a single effective magnetic stimulation exceeds 500J. If 30Hz magnetic stimulation is required, the power consumption will reach 15KW. The energy consumption of magnetic stimulation limits the high-frequency application of magnetic stimulation.

Method used

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  • Magnetic stimulator for reducing power and control method thereof
  • Magnetic stimulator for reducing power and control method thereof
  • Magnetic stimulator for reducing power and control method thereof

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Embodiment Construction

[0032] The magnetic stimulator with reduced power consumption and its control method of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

[0033] Usually, the shape of the induction coil, the position and direction of the coil relative to the stimulation site, and the conductivity of the tissue determine the induced electric field generated by the coil. For the discharge circuit with the coil shape determined, the induced current generated by the magnetic stimulation magnetic field is proportional to the discharge current. For time differentiation, the rate of change of current should be increased as much as possible in order to obtain a high induced current. Only when the induced current exceeds the threshold of the nerve action potential (including time threshold and amplitude threshold), can the physiological effect of stimulating the nerve be achieved. According to the analysis of the RCL classic circu...

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Abstract

The invention relates to a magnetic stimulator for reducing power and a control method thereof. The magnetic stimulator comprises a forward and reverse charging switch block for charging a capacitor bank; a discharge coil for receiving the discharge current of the capacitor bank via the forward and reverse discharge switch block, a forward and reverse voltage comparison circuit for comparing with a preset charging voltage and a control circuit for controlling the forward and reverse charging switch block and the forward and reverse discharge switch block respectively by a switch driving circuit according to the comparison result, wherein, the discharge coil also transmits electric energy to the capacitor bank via the forward and reverse discharge switch block. The method is as follows: initialize setup, carrying out forward charging to a preset value, carrying out forward discharging till reaching discharge time; carrying out reverse charging to a preset value, carrying out reverse discharging till reaching discharge time, and returning to the second step. The invention can realize bi-directionally charging and discharging of non-polarized capacitor, the dump energy can be effectively used after each discharging, thus improving capacity usage ratio, reducing the power consumption of source and improving magnetic stimulus frequency under certain power consumption.

Description

technical field [0001] The invention relates to a medical magnetic stimulation instrument. In particular, it relates to a magnetic stimulator with reduced power consumption that can realize repetitive magnetic stimulation and a control method thereof. Background technique [0002] Magnetic stimulation (TMS) is a magnetic stimulation technology first proposed by Barker et al. in 1985, and it is a technology that applies a pulsed magnetic field outside the body to stimulate specific parts in the body. Due to the non-invasiveness of magnetic stimulation; not injecting charges into the body overcomes the skin pain caused by electrical stimulation; especially since the magnetic permeability difference between different tissues of the human body is much smaller than the electrical conductivity difference, magnetic stimulation is more effective than electrical stimulation. It is easy to penetrate into the body with low conductivity such as bone tissue. Therefore, in recent years,...

Claims

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Application Information

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IPC IPC(8): A61N2/04
Inventor 刘志朋殷涛安好李松
Owner SHENZHEN DELICA MEDICAL EQUIP CO LTD
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