Power supersonic transducer exciting circuit

A technology of ultrasonic transducer and excitation circuit, which is applied in the direction of ultrasonic therapy, treatment, etc., can solve the problems of complex circuit, high voltage of feeding power supply, low efficiency, etc., and achieve the effect of simple driving circuit, simple circuit and remarkable effect

Active Publication Date: 2005-03-02
ZHONGHUI MEDICAL TECH (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Causes its shortcomings such as complicated circuit, high

Method used

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  • Power supersonic transducer exciting circuit
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Embodiment Construction

[0013] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0014] Such as figure 1 As shown, the present invention is composed of a first signal generation circuit, a second signal generation circuit, a gate, a signal modulation circuit, a drive circuit, a series resonance power amplifier circuit, a multi-stage DC power supply and a protection circuit. The output terminals of the first signal generating circuit and the second signal generating circuit are respectively connected to the input terminals of the pass gate. Its output is connected to the first input of the signal modulation circuit. The second input terminal of the signal modulation circuit accepts the pulse width modulation PWM signal from the intelligent monitoring subsystem, the third input terminal accepts the signal from the protection circuit, and its output terminal is connected to the input terminal of the driving circuit. The output e...

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Abstract

The power supersonic transducer exciting circuit used in biomedicine engineering technology includes two signal generator circuits; gate circuit with first and second inputs connected to the outputs of the signal generator circuits, control end accepting the frequency selecting signal, the third input accepting signal from the protecting circuit and output connected to the input of the driver circuit; driver circuit with output connected to the signal input of serially resonant power amplifier circuit; serially resonant power amplifier circuit with feeding input connected to the voltage output of multiple-stage DC source to output protecting signal to the protecting circuit and signal output connected to the power supersonic transducer to excite it to send supersonic wave. The present invention has simple circuit, easy regulation, controllable output signal amplitude and duty ratio, high transmission efficiency and circuit safety.

Description

technical field [0001] The invention relates to an excitation circuit used in medical equipment in the technical field of biomedical engineering, in particular to an excitation circuit for a power ultrasonic transducer of a malignant tumor ultrasonic thermotherapy system. Background technique [0002] Ultrasonic hyperthermia can treat both superficial tumors and deep tumors. It is safe and controllable, has good curative effect, and has no side effects. It has obvious complementary and sensitizing effects with radiotherapy and chemotherapy. Hyperthermia combined with radiotherapy or chemotherapy can achieve comprehensive treatment. The curative effect will be significantly improved; in addition, ultrasonic hyperthermia has no ionization, non-ionizing radiation and electromagnetic radiation, neither will it cause any damage to medical personnel, nor will it pollute the environment. Therefore, ultrasonic hyperthermia is a new and powerful anti-cancer means. In recent years, b...

Claims

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Application Information

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IPC IPC(8): A61N7/02
Inventor 陈亚珠白景峰
Owner ZHONGHUI MEDICAL TECH (SHANGHAI) CO LTD
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