A plasma gas scalpel with adjustable plasma beam diameter

Abstract

The invention belongs to the plasma gas scalpel in the medical operation device. It includes a shell, a cathode and an ionization chamber located at the front end of the cathode head, an electrostatic lens-type large anode composed of an intermediate electrode and front and rear symmetrical electrodes, and the polarity and voltage difference between the intermediate electrode and the front and rear symmetrical electrodes can be adjusted. Inert gas and coolant flow channels, handle and cathode seat, anode electrical connector, plasma beam output head, plasma gas flow channel on the center line of the ionization chamber and electrostatic lens type large anode, plasma beam output head. The invention changes the polarity of the symmetrical electrode and the middle electrode in the lens and the voltage difference between the symmetrical electrode and the middle electrode, so that the density and intensity of the plasma can be adjusted to achieve different therapeutic purposes. Therefore, it has not only the cutting, ablation, coagulation, and hemostasis of biological tissues, but also has comprehensive functions such as ablation, coagulation, and hemostasis, and has simple structure, small size, light weight, and easy processing. features.

Description

technical field [0001] The invention belongs to the technical field of design and production of medical surgical devices, in particular to a plasma gas scalpel with adjustable plasma beam diameter. It can be focused (focused) or diverged to suit the different functions required during surgery. Background technique [0002] Low-temperature plasma ablation technology (surgery) has the advantages of short operation time, less trauma, and quick results, and is widely used in the treatment of rhinitis, tonsils, adenoids, throat and other diseases; in recent years, this technology has begun to be used by medical workers For beauty treatment, skin treatment, etc. Compared with microwave, electric knife, and laser, plasma surgery is more precise and safer. [0003] In medical plasma gas surgical devices, the commonly used plasma gas surgical devices are mainly divided into two categories: [0004] One class is the plasma surgical equipment (knife / device) disclosed in the "Plasma ...

AI Technical Summary

Problems solved by technology

Therefore, these two types of plasma surgical devices have a single function, or because of the low plasma density and relatively low plasma energy per unit area, they are mainly used to coagulate biological tissue and stop bleeding; or because the biological tissue itself is used as a conductive medium to generate plasma , poor plasma aggregation and low intensity, although it can achieve the purpose of cutting and ablation of biological tissues, but its hemostatic effect is poor

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