Plasma precise energy control protection system

Abstract

The invention discloses a plasma precise energy control protection system. The system comprises an AD/DC module, a DC control module and a plasma energy output module; the system further comprises a switching circuit connected in series between the DC control module and the plasma energy output module. In the plasma energy output module, an energy regulation and control circuit is used for dynamically sampling current to detect an impedance value and directly feeding back the impedance value to a second driving control circuit; when the detected impedance value is lower than the excitation impedance value of the plasma, energy regulation and control are carried out, so that the output energy of an impedance matching and output circuit is reduced; and a parallel short-circuit detection circuit is used for carrying out parallel short-circuit detection and then sending an obtained short-circuit detection signal to the switching circuit to carry out short-circuit judgment so as to realize on-off of the switching circuit. According to the plasma precise energy control protection system of the invention, a direct feedback mechanism and parallel voltage sampling are adopted to detect a short-circuit signal, and therefore, the response is fast, the system energy output is stable, and the safety is good.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a plasma precision energy control and protection system. Background technique [0002] The radio frequency plasma surgery system is a new generation of low-temperature plasma surgery system, which can be used for soft tissue dissection, resection, hemostasis and drying in surgery, and it can cooperate with the endoscope system for intracavitary surgery or cooperate with the imaging system for interventional therapy, etc. It eliminates the damage and harm of radio frequency to doctors and patients, and improves the efficiency of surgery. At the same time, it also has various electrodes with different outer diameters, different curvatures and different lengths that are suitable for different departments. [0003] When using a plasma surgery system for surgery, the energy of the plasma surgery system needs to be controlled within a certain range. The existing plasma surgery system use...

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Problems solved by technology

[0003] When using a plasma surgery system for surgery, the energy of the plasma surgery system needs to be controlled within a certain range. The existing plasma surgery system uses serial current sampling, which needs to be fed back to the drive control module through a single-chip microcomputer, and the response time is long; due to the existing The energy regulation of the plasma s

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