# US 2013/0153545 A1 · Plasma jet assembly and plasma brush including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153545 A1 - Document ID: US20130153545A1 - Status: Published application - Kind: A1 - Application number: 13/615,393 - Filed: 2012-09-13 - Published: 2013-06-20 - Earliest claimed: 2011-12-16 - Assignees: Electronics and Telecommunications Research Institute - Inventors: Yark Yeon KIM; Han Young Yu; Yong Ju Yun; Won Ick Jang; Eun-ju Leong; Changho Han - Web page: https://patentgrep.com/patent/US20130153545A1 ## CPC - H05H 1/30: using applied electromagnetic fields, e.g. high frequency or microwave energy (H05H1/28 takes precedence) - A61N 1/44: Applying ionised fluids {(ion generators H01J37/00)} - H05H 1/36: Circuit arrangements (H05H1/38, H05H1/40 take precedence) - H05H 1/2418: {the electrodes being embedded in the dielectric} - H05H 2245/30: Medical applications - H05H: PLASMA TECHNIQUE (apparatus or processes specially adapted for producing X-rays H05G2/00); PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) ## Abstract Plasma jet assemblies are provided. A plasma jet assembly may include: a tube through which a gas flows; a power source providing a high frequency power exciting the gas in plasma state; a power electrode applying the high frequency power to the gas; and a plasma control unit removing arc discharge of a plasma gas generated in the tube by the high frequency power applied to the power electrode. ## Claims ### Claim 1 A plasma jet assembly comprising: a tube through which a gas flows; a power source providing a high frequency power exciting the gas in plasma state; a power electrode applying the high frequency power to the gas; and a plasma control unit removing arc discharge of a plasma gas generated in the tube by the high frequency power applied to the power electrode. ### Claim 2 (depends on 1) The plasma jet assembly of claim 1, wherein the plasma control unit includes a resistor connected between the power source and the power electrode. ### Claim 3 (depends on 2) The plasma jet assembly of claim 2, wherein the plasma control unit further includes a gas control valve controlling a flow rate of the gas flowing in the tube. ### Claim 4 (depends on 3) The plasma jet assembly of claim 3, wherein the gas control valve is disposed at a gas supplying line connected to the tube. ### Claim 5 (depends on 4) The plasma jet assembly of claim 4, wherein the gas supplying line includes a gas line and a connector. ### Claim 6 (depends on 5) The plasma jet assembly of claim 5, wherein the connector includes a pipe having channel holes through which the gas flows. ### Claim 7 (depends on 6) The plasma jet assembly of claim 6, wherein the pipe includes an insulating stick, and the channel holes are disposed around the insulating stick. ### Claim 8 (depends on 1) The plasma jet assembly of claim 1, wherein the power electrode includes a needle disposed in the tube. ### Claim 9 (depends on 8) The plasma jet assembly of claim 8, wherein the power electrode further includes a cladding layer protecting the needle from the plasma gas. ### Claim 10 (depends on 1) The plasma jet assembly of claim 1, wherein the power electrode includes a metal ring surrounding the tube. ### Claim 11 (depends on 1) The plasma jet assembly of claim 1, further comprising: a ground electrode formed at another side of the tube opposite to the power electrode. ### Claim 12 (depends on 11) The plasma jet assembly of claim 11, wherein the ground electrode includes a metal ring formed an end of the tube. ### Claim 13 (depends on 1) The plasma jet assembly of claim 1, wherein the tube includes a dielectric material. ### Claim 14 (depends on 13) The plasma jet assembly of claim 13, wherein the dielectric material includes alumina or ceramic. ### Claim 15 A plasma brush comprising: a frame; a power source providing a high frequency power; and plasma jet assemblies fixed at the frame, each of the plasma jet assemblies including a tube through which a gas flows, a power electrode applying the high frequency power to the gas, and a plasma control unit removing arc discharge of a plasma gas generated in the tube by the high frequency power applied to the power electrode. ### Claim 16 (depends on 15) The plasma brush of claim 15, further comprising: a common ground bar disposed another sides of the tubes. ### Claim 17 (depends on 16) The plasma brush of claim 16, further comprising: a cladding layer protecting the common ground bar from the plasma gas. ### Claim 18 (depends on 15) The plasma brush of claim 15, wherein the plasma control units include resistors connected between the power source and the power electrodes. ### Claim 19 (depends on 18) The plasma brush of claim 18, wherein the plasma control units further include gas control valves controlling flow rates of the gas flowing in the tubes. ### Claim 20 (depends on 18) The plasma brush of claim 18, further comprising: a common power electrode connected between the power source and the resistors.