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Circuit topology and control method of electrosurgical generator with high dynamic characteristics

A technology of electrosurgical generators and control methods, applied in the direction of heating surgical instruments, etc., can solve problems such as difficulties in controlling the power output power of electrosurgical generators, and achieve the effects of improving response speed, wide-range voltage output, and wide-range power regulation

Active Publication Date: 2021-06-22
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0003] However, in practical applications, it is often difficult to control the output power of the electrosurgical generator power supply, mainly for the following reasons: a wide range of rapidly changing load impedance requires the electrosurgical generator to achieve a wide range of voltage output and high dynamic characteristic power control

Method used

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  • Circuit topology and control method of electrosurgical generator with high dynamic characteristics
  • Circuit topology and control method of electrosurgical generator with high dynamic characteristics
  • Circuit topology and control method of electrosurgical generator with high dynamic characteristics

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Embodiment Construction

[0018] to combine figure 1 , a circuit topology and its control strategy based on three-level rectification and multiphase interleaved parallel reconfigurable hybrid bridge inverter applied to electrosurgical generators with high dynamic characteristics, including the first filter inductor L f , the first diode D 1 , the second diode D 2 , the first switch tube S 1 , the second switch tube S 2 , the first capacitance C 1 , the second capacitance C 2 , the third switch tube S 3 , the fourth switch tube S 4 , the fifth switching tube Q 1 , the sixth switching tube Q 2 , the seventh switching tube Q 3 , the eighth switching tube Q 4 , the second filter inductance L 1 , DC blocking capacitor C b , RF transformer T r . The first filter inductance L f One end is connected to one end of the AC power supply, the first filter inductor L f The other end is connected to the first diode D 1 The anode of the second diode D 2 The cathode of the first switching tube S 1 Th...

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Abstract

The present invention provides a circuit topology based on three-level rectification and multi-phase interleaved parallel reconfigurable hybrid bridge inverter applied to electrosurgical generators with high dynamic characteristics and its control strategy, including a first filter inductor, a first Diode, second diode, first switching tube, second switching tube, first capacitor, second capacitor, third switching tube, fourth switching tube, fifth switching tube, sixth switching tube, seventh switching tube A switch tube, an eighth switch tube, a second filter inductor, a DC blocking capacitor, and a radio frequency transformer.

Description

technical field [0001] The invention relates to an electrosurgical generator technology, in particular to a high dynamic characteristic electrosurgical generator circuit topology and a control method. Background technique [0002] As a high-end surgical medical device, the electrosurgical radio frequency energy generator has the advantages of fast cutting speed and good coagulation effect, which can reduce the blood loss of patients and reduce the risk of wound infection and complications, so it is widely used in neurosurgery, endoscopic Mirror and other fine surgery. The electrosurgical radio frequency energy generator cuts and coagulates biological tissues based on the principle of high-frequency current thermal effect. It can also be referred to as an electrosurgical generator, and usually selects radio frequency alternating current energy in the frequency range of 300KHz to 5MHz. The electrosurgical generator is essentially a power conversion system that converts the po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B18/12
Inventor 顾玲彭凯向园祉
Owner NANJING UNIV OF SCI & TECH
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