A plasma surgical device for reducing bleeding in live tissue by means of a gas plasma. The device comprises a plasma-generating system having an anode (1), a cathode (8) and a gas supply channel (17) for supplying gas to the plasma-generating system, the plasma-generating system comprising at least one electrode (3, 5), which is arranged between said cathode (8) said anode (1), and the plasma-generating system being enclosed by a housing (12) of an electrically conductive material, which is connected to the anode (1). The device is characterised in that said housing (12) forms said gas supply channel (17).

A cold plasma coagulator clots blood bleeding from tissue during surgical operation in an effective manner, by applying unipolar cold plasma to the blood. The cold plasma coagulator has a high frequency power supply, gas dynamic block and plasmotron. The power supply has a rectifier, capacitor storage and voltage inverter. The said plasmotron is assembled in a hermetically sealed case and in which resonance inductor and dielectric tube are located coaxially. One end of the dielectric tube is connected to the gas dynamic block, another end is positioned to eject plasma through output nozzle. A needle corona electrode is located along the axis of the dielectric electrode. The coils of the resonance inductor has a low voltage and high voltage section, the low voltage section of resonance coils being connected to output of the voltage inverter. One pin of the high voltage section is isolated and another one is connected to the needle corona electrode.

A surgical apparatus adapted to emit a plurality of high-energy inert gas atoms, such as argon, in a stream for cutting, cauterizing, or evaporating tissue. The apparatus comprises an inert gas supply, a plasma cell in communication with the inert gas source for imparting energy to the inert gas atoms and defined in part by a positive electrode and a negative electrode, at least one power supply electrically connected between the positive and negative electrodes, and means for directing the energized inert gas atoms at a target. The power supply provides initially an ionization voltage between the negative and positive electrodes to initiate a plasma from the inert gas in the plasma cell, and subsequently a pulsed voltage curve that sustains the plasma at a predetermined energy level. Methods for performing surgical procedures using the surgical apparatus for cutting, cauterizing, and/or evaporating portions of body tissue are also described.

A plasma tool adapted to emit high quantum energy inert gas atoms in a stream for cutting, liquefying, or evaporating material such as human tissue during surgical procedures. The apparatus comprises a source of inert gas, a plasma cell in communication with the inert gas source for imparting energy to the inert gas atoms and defined in part by a positive electrode and a negative electrode, at least one power supply electrically connected between the positive and negative electrodes, and means for directing the high quantum energy inert gas atoms at a target. The power supply initially provides an ionization voltage between the negative and positive electrodes to initiate a plasma from the inert gas in the plasma cell, and subsequently provides a pulsed voltage curve to sustain the plasma at a predetermined energy level. Methods for using the tool, including for performing surgical procedures, are also described.

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.