WO1999021496A1 - Dispositif pour l'incision au plasma dans une matiere au moyen d'un generateur de champ electromagnetique haute frequence specifiquement accorde - Google Patents

Dispositif pour l'incision au plasma dans une matiere au moyen d'un generateur de champ electromagnetique haute frequence specifiquement accorde Download PDF

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Publication number
WO1999021496A1
WO1999021496A1 PCT/US1998/021033 US9821033W WO9921496A1 WO 1999021496 A1 WO1999021496 A1 WO 1999021496A1 US 9821033 W US9821033 W US 9821033W WO 9921496 A1 WO9921496 A1 WO 9921496A1
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WO
WIPO (PCT)
Prior art keywords
plasma
electrode tip
matter
incising
plasma cloud
Prior art date
Application number
PCT/US1998/021033
Other languages
English (en)
Inventor
Richard J. Fugo
Damian Coccio
Original Assignee
Fugo Richard J
Damian Coccio
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/957,786 external-priority patent/US5958266A/en
Priority claimed from US09/112,471 external-priority patent/US6479785B1/en
Priority to EA200100120A priority Critical patent/EA003761B1/ru
Priority to BR9815936-4A priority patent/BR9815936A/pt
Priority to AU97878/98A priority patent/AU750001B2/en
Priority to MXPA01000289A priority patent/MXPA01000289A/es
Priority to CA002336907A priority patent/CA2336907C/fr
Priority to EP98952102A priority patent/EP1094758A4/fr
Application filed by Fugo Richard J, Damian Coccio filed Critical Fugo Richard J
Priority to JP2000517663A priority patent/JP2002509738A/ja
Priority to IL14078298A priority patent/IL140782A/xx
Priority to NZ509421A priority patent/NZ509421A/en
Publication of WO1999021496A1 publication Critical patent/WO1999021496A1/fr
Priority to APAP/P/2001/002064A priority patent/AP1357A/en
Priority to NO20010130A priority patent/NO20010130D0/no
Priority to HK02103585.3A priority patent/HK1041798A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/042—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating using additional gas becoming plasma
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/0066—Sensing and controlling the application of energy without feedback, i.e. open loop control

Definitions

  • This invention relates to a plasma generation device employed to place an incision into matter with a harmonious plasma cloud, specifically to harmonious plasma clouds initiated and sustained by electromagnetic energy waves transmitted from a radiofrequency signal generator system.
  • This system is impedance matched, frequency matched and output power matched to the incising harmonious plasma cloud which is initiated, sustained and controlled by our device and in the process coats the activated transmitter incision probe of our invention.
  • Hardened physical blades such as a metal blade, a sapphire blade, or a diamond blade are the devices most frequently employed to place an incision into matter. Such incisions are based on frictional physical interactions between a sharp, acute edge of hardened matter against a surface of the matter to be incised. Such purely physical methods of one hardened matter attempting to cut through another hardened matter are inefficient and therefore experience significant inefficiencies such as frictional resistance when the matter being incised is solid and dense such as biologic tissue, wood products or even metal. For these reasons, others have resorted to devices such as electronically generated incisions, electro-incisions or electrosurgery of matter.
  • Lasers have also been used to incise and cut; however, these units are expensive and require a large amount of system input energy to create a laser beam with sufficient power to cut or make an incision into matter. Lasers have been used to generate plasma and are used in processes such as etching in the field of microelectronics.
  • Plasma arcing can be found in a number of areas such as welding arcs, spark plug arcs, lightening bolt arcs, neon lights, fluorescent lights, and electrosurgical arcs.
  • Uncontrolled arcing per se, is a form of disharmonious plasma flow and represents uncontrolled flow turbulence of ionized atomic particles in plasma with a substantial level of atomic particle chaos in the plasma.
  • the atomic particle turbulence in plasma arcs represents a form of atomic particle chaos and the uncontrolled nature of the atomic particle chaos causes a substantial quantity of energy spillover into matter outside of the intended path of incision and thereby may produce excessive heating. This level of substantial heating is produced when unwanted arcing occurs with classic electrocutting or electrosurgical units.
  • Harmonious plasma cuts in a more controlled, efficient and safer manner because the atomic particle components in a harmonious plasma cloud exist in a more stable, balanced, and controlled state with a higher order of organization and less atomic particle turbulence than disharmonious plasma.
  • Our harmonious plasma cloud is furthermore compressed, controlled, contoured and shaped by utilizing the Pinch Effect of physics.
  • Our compressed plasma cloud is then trapped and contained by the Magnetic Bottle Phenomenon well known to physicists and employed in fields such as nuclear physics.
  • our device cuts with a harmonious controlled plasma cloud rather than classic ohmic diathermy.
  • Fig 1 shows a plasma cutting device with a capacitive coupling between the incising transmitter probe system and the matter into which an incision is placed.
  • Fig 2 shows a plasma cutting device with a resistive coupling between the incising tr.ansmitter probe system and the matter into which an incision is placed.
  • Our device is a specifically tuned radiofrequency generator and power amplifier system. Our invention does not require substantially complicated designs for the transmitter incising electrode tips nor elaborate plasma control devices such as a tokamak or cyclotron.
  • the electromagnetic wave created by our system is a form of radiant electromagnetic energy and is transmitted from the active transmitter incising electrode tip of our system. This radiant electromagnetic energy is specifically conditioned to interact with atoms and molecules at the interface of the active transmitter incising electrode tip and the matter into which an incision is placed.
  • the reaction of radiant electromagnetic energy with atoms and molecules at the incising electrode tip surface includes a photoelectric effect and thermal ionization which strip electrons from the atomic orbitals of atoms at the interface of the active incising electrode tip and the matter into which an incision is placed.
  • the radiant energy acts to excite electrons and ions along the surface of the active transmitter incising electrode tip.
  • the result of such processes is atomic transformation to higher energy ions and electrons.
  • the free charged atomic particles move rapidly through space before colliding with electrons of other atoms in the electrode interface thereby knocking additional electrons out of their atomic orbitals. Repeating this process produces a chain reaction of charged atomic particle collision known as an Avalanche Effect which helps trigger the formation of a cloud of plasma along the active transmitter incising electrode tip surface.
  • Our device is impedance matched, frequency matched, power matched and tuned to the plasma cloud coating the active transmitter incising electrode tip.
  • Our device conditions the generated electromagnetic waveform to allow a tightly coupled, highly efficient energy transfer to the plasma cloud in order to provide maximum energy transfer into the plasma cloud with minimal loss of radiant electromagnetic energy into the matter surrounding the intended path of incision.
  • Physical chemistry principles are employed to control the shape and cl acteristics of the plasma cloud, including the reduction of atomic particle chaos in the plasma cloud.
  • our device produces a harmonious, controlled plasma that focuses energy into the intended path of incision as opposed to the caustic, disharmonious plasma arcing seen in classic electrocutting or electrosurgical units.
  • This cloud of harmonious plasma manifests lower atomic particle chaos and produces a more efficient incision in matter than classic electrocutting or electrosurgical systems.
  • FIG. 1 A typical embodiment of the plasma incision device of the present invention is illustrated in Fig 1 and Fig 2.
  • An output signal of a radiofrequency signal generator (10) is switched on and off with a radiofrequency switch (12) by several means such as an on-off button or on-off switch (14).
  • the output signal of the radiofrequency signal generator is then slaved through a signal gate (20) to either a burst mode duty cycle generator (16) or a continuous mode free running generator (18).
  • the burst mode or continuous mode radiofrequency output signal is then amplified through a power amplifier (22).
  • the output signal of the power amplifier is then conditioned with an impedance matching and output conditioning network (24) and is then channeled into -an active incising transmitter handpiece (26).
  • an incising electrode tip (28) at the extreme end of incising transmitter handpiece (26) is coated with a plasma cloud which is used to place an incision path into the matter into which an incision is placed (32). Matter into which an incision is placed (32) may be coupled to our plasma cutting system either by a capacitive coupling plate (30) or a resistive coupling electrode (34).
  • Active incising electrode tip (28) is preferably a solid, non-hollow conductor although a partial or completely hollow incising electrode tip may be utilized.
  • Incising electrode tip (28) is preferably linear or curvilinear in design; however, the shape of incising electrode tip (28) is not necessarily specific in design and may even have a loop or polygon design.
  • An on-off button / on-off switch (14) is used to activate or deactivate a radiofrequency switch (12). This therefore regulates the transmission of an output signal of a radiofrequency signal generator (10).
  • Output signal of a radiofrequency signal generator (10) is further controlled such that its transmission is activated or deactivated by a burst mode duty cycle generator (16) or by a continuous mode free running generator (18).
  • Output signal is amplified by a power amplifier (22) and then conditioned by an impedance matching and output conditioning network (24). Output signal is then channeled through an incising transmitter handpiece (26).
  • Matter into which an incision is placed (32) may be linked to our invention by a capacitive coupling plate (30) or a resistive coupling electrode (34).
  • Output signal is transmitted from a plasma cutting device by an incising electrode tip (28), creating a cloud of plasma to coat incising electrode tip (28).
  • This plasma coat can react with atoms and molecules of matter and thereby place an incision path into matter into which an incision is placed (32).
  • Our system has similarities to standard radio transmission systems which are impedance matched to atmospheric air, whereas our system is impedance matched, frequency matched, power matched as well as tuned to a harmonious plasma cloud surrounding the active incising electrode tip (28).
  • our invention bears similarities to other electromagnetic wave transmission systems, it employs and integrates a substantial number of principles of physics and chemistry in a manner which allows us to create a novel device to place a clean and efficient incision into matter.
  • this device is able to achieve a cleaner, more precise, more powerful and more efficient incision with less impact on matter outside of the intended path of incision than classic electrocutting systems.
  • Pksma is the least abundant of the four types of matter to be found on earth, although it is the most abundant form of matter in the universe.
  • Examples of plasma on earth include: welding arcs, spark plug arcs, neon light arcing, arcs around lightning discharges as well as uncontrolled, caustic plasma arcs seen in electrocutting or electrosurgery.
  • Plasma is also used in fields such as semiconductor etching but is herein produced by expensive and high energy consumption systems such as lasers or elaborate plasma etching chambers.
  • the levels of atomic particle turbulence and chaos manifested by classic electrocutting or electrosurgical units are employed by us as a relative standard for defining an increase or decrease in atomic particle turbulence or chaos in plasma.
  • Our system employs an inexpensive, electronic radiofrequency generator/amplifier system to produce, condition and transmit a continuous or pulsed electromagnetic field from an incising electrode tip (28).
  • the cycle time of the electromagnetic field pulsed mode is variable and each complete on-off cycle of the pulsed mode may be as short as 0.000001 of a second.
  • Specific parameters of this electromagnetic field generator system are largely determined by the atomic particle composition along the interface of the incising electrode tip (28) and the matter into which an incision is placed (32).
  • Our system utilizes the atoms along the interface of the incising electrode tip (28) and the matter into which an incision is placed (32) to generate a plasma cloud as opposed to systems which require an ionizable gas to be injected into the field of incision and thereupon have the injected gas energized and converted into plasma. Nonetheless, our plasma cutting system may employ supplementary ionizable gas fed into the field of the incising electrode tip (28) in order to augment the cutting process. Our invention does not, however, require substantially complicated designs for the transmitter incising electrode tips nor elaborate plasma control devices such as a tokamak or cyclotron.
  • the electromagnetic wave created by our system is a form of radiant electromagnetic energy and is transmitted from the active incising electrode tip (28) of our system.
  • the radiant electromagnetic energy is specifically conditioned to interact with atoms and molecules at the surface of the active incising electrode tip (28).
  • Electromagnetic frequencies secondarily produced from atomic particle interaction and dynamics at the plasma incising electrode tip (28) play a substantial role in the system function and effectiveness.
  • Harmonic frequencies of the fundamental generated electromagnetic waveform often play a substantial role in system function, dynamics and effectiveness.
  • the radiant electromagnetic energy interaction with atoms and molecules includes thermal ionization and the photoelectric effect which strip electrons from the atomic orbitals of atoms at the interface of the matter into which an incision is placed (32) and the incising electrode tip (28).
  • Such processes result in atomic transformation of atoms and molecules into ions and free electrons.
  • the free charged atomic particles move through space before colliding with electrons of other electrode interface atoms thereby knocking more electrons out of their atomic orbitals.
  • Repeating this process produces a chain reaction of charged atomic particle collision known as an Avalanche Effect which thereby participates in the formation of a cloud of plasma at the surface of the active incising electrode tip (28).
  • Our device is impedance matched, frequency matched, power matched and tuned to the plasma cloud coating the incising electrode tip (28).
  • Our device conditions the transmitted electromagnetic waveform to provide a tightly coupled, highly efficient energy transfer to the plasma cloud in order to allow maximum energy transfer from the incising electrode tip (28) into the plasma cloud with minimal loss of electromagnetic radiant energy into the matter surrounding the intended path of incision.
  • Physical chemistry principles are employed to control the shape and characteristics of the plasma cloud including the regulation of atomic particle chaos in the plasma cloud. In this way, our device produces a harmonious, controlled plasma that focuses energy into the intended path of incision as opposed to the caustic, disharmonious plasma arcing seen in classic electrocutting or electrosurgical units.
  • This cloud of harmonious plasma possesses lower atomic particle chaos and turbulence than classic electrocutting or electrosurgical systems, thereby producing a more efficient incision into matter than found in classic electrocutting or electrosurgical systems which .are seen to generate disharmonious plasma arcs.
  • NMR Nuclear Magnetic Resonance
  • our device employs an electromagnetic wave which is impedance matched, frequency matched, power matched and tuned to initiate, sustain and condition a plasma cloud around the incising electrode tip (28) as well as reduce the atomic particle disorganization and chaos in the plasma cloud.
  • the atomic particles in the plasma cloud coating the incising electrode tip (28) of our invention are conditioned such that they possess less atomic particle chaos and a higher order of organization than seen in plasma arcs of classic electrocutting systems thereby allowing our device to generate a harmonious plasma cloud.
  • the levels of atomic particle turbulence and chaos manifested in classic electrocutting or electrosurgical units are employed by us to create a relative standard or baseline from which we may define and demonstrate an increase or decrease in the magnitude of atomic particle turbulence or chaos in plasma.
  • Nuclear Magnetic Resonance teaches us that precessing atomic particles may absorb radiant electromagnetic energy when that atomic particle precession frequency and the frequency of the radiant electromagnetic energy are in resonance. In other words, Nuclear Magnetic Resonance demonstrates that efficient absorption of electromagnetic energy occurs when the atomic particle is frequency matched to the radiant electromagnetic wave frequency. Our device demonstrates an analogous relationship regarding the importance of frequency matching our transmitter electromagnetic wave to the atomic particle properties composing the plasma cloud surrounding the incising electrode tip (28).
  • Nuclear Magnetic Resonance also teaches us that the frequency of atomic particle precession may be directly related to the strength of the magnetic field in which the atomic particle exists. Therefore, the stronger the applied magnetic field, the higher the electromagnetic field frequency required to achieve the resonance needed for efficient energy absorption. Likewise, the electron gyro frequencies in the "D" and "E" layers of the earth's ionosphere substantially increase as we move from the equator toward the magnetic poles of the earth, either north pole or south pole. Respecting similar scientific principles, our device addresses the issue of field strength and electromagnetic frequency and thereby power matches and frequency matches our transmitted electromagnetic wave to the atomic particles composing the plasma cloud coating the incising electrode tip (28).
  • Our device is analogous in that it maximizes transmitted electromagnetic radiation with an impedance matching and output conditioning network which provides a tightly coupled, highly efficient transfer of electromagnetic waveform energy into the plasma cloud which coats and surrounds the active incising electrode tip (28). In this manner, our device achieves an efficient transfer of radiant electromagnetic energy into the plasma cloud surrounding the incising electrode tip (28).
  • Arcing is a form of disharmonious plasma flow and represents uncontrolled, turbulent flow of ionized atomic particles in plasma, thereby producing increased atomic particle chaos and turbulence in the plasma.
  • NMR Nuclear Magnetic Resonance
  • merely reducing the cutting tip power does not in itself significantly improve the plasma harmony in as much as it does not greatly decrease the flow turbulence or flow chaos of the ionized atomic particles that make up a plasma arc.
  • plasma has a wide range of physical presentation including a wide range of temperature, density, flow ch-aracteristics, atomic particle components, etc.
  • plasma arcing can be found in a number of areas such as welding arcs, spark plug arcs, lightning bolt arcs, neon lights and electrocutting or electrosurgical arcs.
  • the substantial intensity of atomic particle turbulence in classic electrocutting plasma arcs represents a form of elevated atomic pa- rticle chaos, wherein the uncontrolled nature of the atomic particle chaos is caused by turbulent flow of the atomic particles in the plasma cloud.
  • This form of plasma represents disharmonious plasma and when used for cutting results in substantial heating or a significant quantity of energy spillover into matter outside of the intended path of incision. This energy spillover extending beyond the intended path of incision into matter results in energy exposure, thermal exposure and damage to surrounding matter.
  • our invention minimizes classic plasma arcing by substantially reducing the atomic particle turbulence and chaos in the plasma cloud, .and thereby acts to generate a harmonious plasma cloud.
  • the electromagnetic field traverses the thin coating of harmonious plasma surrounding the activated incising electrode tip (28), the electromagnetic field is slowly damped or decreased in amplitude.
  • the electromagnetic field will pass completely through the plasma cloud and will encounter matter outside of the intended incision path, namely the matter which surrounds the cloud of incising plasma.
  • the generated electromagnetic wave then encounters a barrier to which it is not tuned nor impedance matched and thereby a substantial percentage of the remaining energy of the electromagnetic wave is reflected back into the harmonious plasma cloud.
  • This reflected electromagnetic energy acts to further energize the molecular particles in the plasma cloud, thereby reducing the output energy which must be transmitted by the electromagnetic wave generator system.
  • This process also serves to minimize the percentage of total electromagnetic radiation that penetrates into, that reacts with, and that presents potential radiation exposure damage to matter outside of the intended incision path.
  • the centripetal force of our generated magnetic field is used to control the distance between the atomic particles in the harmonious plasma cloud and the surface of the activated incising electrode tip (28).
  • the ionized particles travel in spiral paths in magnetic fields while the individual ionized particles may simultaneously be oscillating, vibrating, spinning and/or precessing.
  • the Pinch Effect which has been used for many years in fields such as plasma physics is employed in our system. In this way, we are able to compress, contour, shape and control the harmonious plasma cloud with a solid or hollow transmitter incising electrode tip (28).
  • Magnetic Bottle Effect used in fields such as nuclear physics to trap and contain the compressed plasma cloud without the need of solid matter containment vessels and thereby avoid the requirement to employ hollow or cavity containing incising tip probes to trap and control the plasma cloud.
  • Increasing the density of atomic particles in the harmonious plasma cloud allows us to substantially increase the plasma cloud power density, thereby improving the cutting efficiency and power of the plasma cloud.
  • compressing the plasma cloud causes a substantial decrease in the cross sectional diameter of the plasma cloud thereby decreasing the width of the intended incision path as well as minimizing side effects or potential adverse impact on matter outside of the intended path of incision.
  • our radiofrequency generator system utilizes its conditioned, transmitted power to create and sustain a thin cloud of harmonious plasma which coats the incising electrode tip.
  • our incision into matter produced by our invention is created by the interaction of the harmonious plasma cloud coating our incising electrode tip and the matter into which an incision is placed.
  • an incision into matter is created by the energy of a controlled, harmonious cloud of plasma atomic particles surrounding an activated incising electrode tip.
  • our plasma incising device has the additional advantages in that

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Abstract

La présente invention porte sur un dispositif permettant d'effectuer une incision dans une matière (32) avec un nuage de plasma harmonieux. Un système (10) générateur haute fréquence génère un signal électromagnétique pulsé ou continu qui est transmis par une pointe (28) d'électrode d'incision à émetteur actif. Cette onde électromagnétique générée est utilisée pour déclencher un nuage de plasma par des processus tels que l'ionisation thermique, et un effet photoélectrique qui déclenche ensuite un effet d'avalanche des particules atomiques chargées à la surface de la pointe (28) d'électrode d'incision à émetteur actif. Cette onde électromagnétique est adaptée en impédance, en fréquence, en courant, accordée au nuage de plasma présentant une réduction de la turbulence et du chaos des particules atomiques, et forme un revêtement sur la surface de la pointe (28) d'électrode d'incision à émetteur actif. L'effet bouteille magnétique, l'effet de pincement et l'effet tunel sont utilisés pour piéger, contenir, comprimer, focaliser et amplifier l'énergie du nuage de plasma d'incision.
PCT/US1998/021033 1997-10-24 1998-10-02 Dispositif pour l'incision au plasma dans une matiere au moyen d'un generateur de champ electromagnetique haute frequence specifiquement accorde WO1999021496A1 (fr)

Priority Applications (12)

Application Number Priority Date Filing Date Title
IL14078298A IL140782A (en) 1998-07-09 1998-10-02 Device for plasma incision of matter with a specifically tuned radiofrequency electromagnetic field generator
NZ509421A NZ509421A (en) 1997-10-24 1998-10-02 Device for plasma incision of matter with a specifically tuned radiofrequency electromagnetic field generator
JP2000517663A JP2002509738A (ja) 1998-07-09 1998-10-02 特定的に同調された無線周波数電磁界発生器を用いた物質の切開のための装置
AU97878/98A AU750001B2 (en) 1998-07-09 1998-10-02 Device for plasma incision of matter with a specifically tuned radiofrequency electromagnetic field generator
MXPA01000289A MXPA01000289A (es) 1998-07-09 1998-10-02 Dispositivo para incision de plasma con un generador de campo electromagnetico de radiofrecuencia especificamente sintonizado.
CA002336907A CA2336907C (fr) 1998-07-09 1998-10-02 Dispositif pour l'incision au plasma dans une matiere au moyen d'un generateur de champ electromagnetique haute frequence specifiquement accorde
EP98952102A EP1094758A4 (fr) 1998-07-09 1998-10-02 Dispositif pour l'incision au plasma dans une matiere au moyen d'un generateur de champ electromagnetique haute frequence specifiquement accorde
EA200100120A EA003761B1 (ru) 1998-07-09 1998-10-02 Устройство для плазменного надреза материи с помощью резонансного генератора электромагнитного поля высокочастотного диапазона
BR9815936-4A BR9815936A (pt) 1998-07-09 1998-10-02 Dispositivo de incisão de plasma de matéria com gerador de campo eletromagnético de radiofrequência especificamente sintonizado
APAP/P/2001/002064A AP1357A (en) 1997-10-24 1999-10-02 Device for plasma incision of matter with a specifically tuned radiofrequency electro-magnetic field generator.
NO20010130A NO20010130D0 (no) 1997-10-24 2001-01-08 Anordning for plasmaskjæring av materiale ved hjelp av en spesielt avstemt radiofrekvent elektromagnetisk felt-generator
HK02103585.3A HK1041798A1 (zh) 1998-07-09 2002-05-13 含有特別調諧射頻電磁場發生器的等離子切割物質的裝置

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/957,786 US5958266A (en) 1997-10-24 1997-10-24 Method of plasma incision of matter with a specifically tuned radiofrequency electromagnetic field generator
US08/957,786 1997-10-24
US09/112,471 1998-07-09
US09/112,471 US6479785B1 (en) 1998-07-09 1998-07-09 Device for plasma incision of mater with a specifically tuned radiofrequencty electromagnetic field generator

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WO1999021496A1 true WO1999021496A1 (fr) 1999-05-06

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PCT/US1998/019843 WO1999021495A1 (fr) 1997-10-24 1998-09-24 Technique d'incision au plasma d'un materiau a l'aide d'un generateur de champ electromagnetique a frequences radioelectriques accordees de maniere specifique
PCT/US1998/021033 WO1999021496A1 (fr) 1997-10-24 1998-10-02 Dispositif pour l'incision au plasma dans une matiere au moyen d'un generateur de champ electromagnetique haute frequence specifiquement accorde

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PCT/US1998/019843 WO1999021495A1 (fr) 1997-10-24 1998-09-24 Technique d'incision au plasma d'un materiau a l'aide d'un generateur de champ electromagnetique a frequences radioelectriques accordees de maniere specifique

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EP (1) EP1028662A4 (fr)
JP (1) JP2001520939A (fr)
KR (1) KR100543054B1 (fr)
CN (1) CN1176636C (fr)
AP (2) AP1248A (fr)
AU (1) AU736239B2 (fr)
BR (1) BR9813268A (fr)
CA (1) CA2307213A1 (fr)
EA (1) EA002935B1 (fr)
IL (1) IL135791A0 (fr)
NO (2) NO20002073L (fr)
NZ (2) NZ504364A (fr)
OA (1) OA11614A (fr)
WO (2) WO1999021495A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6479785B1 (en) * 1998-07-09 2002-11-12 Richard J. Fugo Device for plasma incision of mater with a specifically tuned radiofrequencty electromagnetic field generator
JP4834815B2 (ja) * 2005-03-23 2011-12-14 国立大学法人愛媛大学 医療用治療装置
CN106597519B (zh) * 2016-11-29 2018-10-09 华中科技大学 一种j-text托卡马克装置杂质粒子浓度测量系统

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NZ509421A (en) 2003-05-30
NZ504364A (en) 2002-11-26
EA200000458A1 (ru) 2001-04-23
KR100543054B1 (ko) 2006-01-20
AP2001002064A0 (en) 2001-03-31
AP2000001810A0 (en) 2000-06-30
NO20002073D0 (no) 2000-04-19
NO20002073L (no) 2000-06-19
AP1248A (en) 2004-02-21
EA002935B1 (ru) 2002-10-31
WO1999021495A1 (fr) 1999-05-06
CN1277546A (zh) 2000-12-20
EP1028662A1 (fr) 2000-08-23
AU736239B2 (en) 2001-07-26
JP2001520939A (ja) 2001-11-06
AP1357A (en) 2004-12-03
IL135791A0 (en) 2001-05-20
OA11614A (en) 2004-09-10
KR20010024563A (ko) 2001-03-26
NO20010130D0 (no) 2001-01-08
CN1176636C (zh) 2004-11-24
CA2307213A1 (fr) 1999-05-06
BR9813268A (pt) 2000-08-22
EP1028662A4 (fr) 2006-11-08
AU9502698A (en) 1999-05-17

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