Noise suppression type switch power supply of bipolar multifunctional tong
A technology of noise suppression and switching power supply, which is applied in the direction of output power conversion device, electrical components, and adjustment of electrical variables, etc. It can solve the problems of energy loss, waste of energy, and easy heating of resistors, so as to prolong the service life, realize reuse, Calorific value reduction effect
Inactive Publication Date: 2018-01-26
崔小花
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Problems solved by technology
[0004] The switching power supply of the traditional bipolar multifunctional clamp includes a high-frequency flyback, which contains a capacitor connected in parallel with the primary coil of the high-frequency voltage converter, and the capacitor is connected in parallel with a resistor. When working in this way, the resistor is very easy to generate heat, and a large amount of energy is lost in the form of heat, which not only easily burns out the circuit board, but also wastes energy.
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[0013] like figure 1 , 2 As shown, the switching power supply of the noise-suppressed bipolar multifunctional clamp includes a filter unit 1, a rectifier 2, a high-frequency flyback 3, a rectification filter output unit 4, a feedback unit 5, a circuit control unit 6 and a peripheral circuit unit 7 , after the alternating current is low-pass filtered by the filter unit 1, after passing through the rectifier 2, all the way through the high-frequency flyback 3, and then output through the rectification and filtering output unit 4, the feedback unit 5 samples the rectified output voltage of the rectification and filtering output unit 4 And transmit the circuit control unit 6, the circuit control unit 6 is electrically connected with the rectifier 2 through the peripheral circuit unit 7; the other path after the rectifier 2 is depressurized by the resistor R1 and sent to the circuit control unit 6 as a start signal.
[0014] The high-frequency flyback 3 includes a high-frequency f...
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The present invention discloses a noise suppression type switch power supply of a bipolar multifunctional tong. The switch power supply comprises a filtering unit, a rectifier, a high-frequency flyback device, a rectifying, filtering and outputting unit, a feedback unit, a circuit control unit and a peripheral circuit unit, and is characterized in that the high-frequency flyback device comprises acapacitor in parallel connection with a primary coil of a high-frequency voltage converter, an energy conversion coil and a switching tube, the capacitor, the energy conversion coil and the switchingtube form a discharge loop, and the energy conversion coil is wound on an iron core of the high-frequency voltage converter; a diode is in series connection in the discharge loop, the filtering unitis composed of an anti-series mode interference circuit and an anti-common mode interference circuit, the anti-series mode interference circuit is used to suppress the normal noise, and the anti-common mode interference circuit is used to suppress the common-mode noise interference. By improving the high-frequency flyback device, the noise suppression type switch power supply has the characteristics of saving energy and protecting environments.
Description
technical field [0001] The invention relates to a medical device, in particular to a switching power supply of a bipolar multifunctional forceps. Background technique [0002] When performing laparoscopic surgery on human body, since the diseased tissue will be removed, it is necessary to use medical bipolar electric coagulation forceps to electrocoagulate blood vessels to stop bleeding. Most of the medical electrocoagulation forceps in the prior art are monopolar forceps. When in use, a negative electrode plate is generally pasted on the human body's buttocks. If the contact is poor, the human skin is easily burned, and the coagulation and cutting cannot be completed at one time, and must be replaced. equipment. Bipolar electrocoagulation forceps in the prior art, clamp tube device, clamp handle device, lock cylinder mechanism and electrode assembly, wherein the clamp head device is installed on the front end of the clamp tube device, the clamp tube device is connected wit...
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IPC IPC(8): H02M7/217H02M3/338H02M1/12
Inventor 崔小花
Owner 崔小花