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Pulsed plasma device and method for generating pulsed plasma

A plasma and pulse technology, applied in the field of plasma generation devices, can solve the problems of anode potential drop, difficult control, unstable pulse plasma flow energy, etc.

Inactive Publication Date: 2010-09-08
PLASMA SURGICAL INVESTMENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to a drop in the potential of the anode and its fluctuations which in turn lead to strong corrosion of the cathode
Potential fluctuations at the cathode and anode lead to energy instability and poor control of the pulsed plasma flow

Method used

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  • Pulsed plasma device and method for generating pulsed plasma
  • Pulsed plasma device and method for generating pulsed plasma
  • Pulsed plasma device and method for generating pulsed plasma

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Embodiment Construction

[0048] see figure 1 , the system for generating pulsed plasma generally includes a console 100 and a handheld part 200 . Handpiece 200 is also sometimes referred to herein as a device. The console 100 supplies the handpiece 200 with electricity, a plasma generating gas, preferably argon, a coolant such as water, and / or an oxygen-carrying gas such as air, among others. Additionally, console 100 may contain one or more pumps that may be used by device 200 to remove impurities from the treated surface through one or more absorption channels. The console 100 has control circuitry for operating the handheld 200 and a user interface consisting of a display and controls known in the art. An operator, such as a trained medical professional, uses the controls of the console 100 to program the operating modes of the device according to the parameters for a given medical procedure, and then uses the handpiece 200 to perform the given procedure. Although the embodiments of the present ...

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Abstract

A device and a method for generating a truly pulsed plasma flow are disclosed. The device includes a cathode assembly comprising a cathode and a cathode holder, an anode, and two or more intermediate electrodes, the anode and the intermediate electrodes forming a plasma channel expanding toward the anode. The intermediate electrode closest to the cathode may form a plasma chamber around the cathode tip. An extension nozzle forming an extension channel having a tubular insulator along at least a portion of its interior surface is affixed to the anode end of the device. During operation, a voltage is applied between the cathode and the anode and a current is passed through the cathode, the plasma, and the anode. The voltage and current profiles are selected to cause the rapid development of a plasma flow with required characteristics. A substantially uniform temperature and power density distribution of the plasma pulse is achieved in the extension nozzle. Additionally, ozone may be generated in the extension nozzle during the generation of the plasma pulse.

Description

technical field [0001] The present invention relates to plasma generating apparatus, and more particularly, to plasma generating apparatus and methods of producing pulsed plasma for applications requiring pure plasma. Background technique [0002] Plasma generating devices play an important role in many fields. For example, plasmas are used in displays such as televisions and computer monitors, in spectroscopy, in spray applications such as coatings, and in medicine. [0003] It is well known in the art that plasma can be effectively used for tissue cutting, coagulation and vaporization in the medical field. For best results, the generated plasma has to have precise characteristics such as velocity, temperature, energy density, etc. Preferably, plasmas used for medical applications must also be pure. In other words, it should only include particles of the ionized plasma generating gas and not other particles such as substances that are separated from different parts of th...

Claims

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Application Information

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IPC IPC(8): H05H1/24
CPCH05H2001/3452H05H2001/3457H05H1/34H05H2001/3484H05H1/3452H05H1/3457H05H1/3484
Inventor 尼克雷·萨斯洛夫
Owner PLASMA SURGICAL INVESTMENTS
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