Disclosed are a dental disease treating device, and more particularly, to a dental disease treating device that may generate high-density plasma that is required for a treatment of a dental disease, such as periodontitis, and minimize generation of ozone as well, and a method for treating a dental disease. The dental disease treating device that generates plasma for treating a dental disease, includes a handpiece body having a space part in an interior thereof, a plasma generating part mounted in the space part of the handpiece body, and that generates the plasma by exciting a gas in a plasma generating space in an interior thereof, and a tip part detachably coupled to an end nozzle of the handpiece body or the plasma generating part, and the tip part includes a passage for irradiating the plasma to a local portion while inhibiting oxygen from being introduced into the plasma generating space.

A method is provided for treating an implant in a medical care center prior to using the implant in a medical procedure. The method comprises applying a plasma-generating electromagnetic (EM) field using at least one electrode so as to generate plasma in a vicinity of the implant while displacing the electrode and the implant relative to one another. A portable plasma module and a docking station configured to connect to the portable plasma module, thereby forming a plasma generating system, are also provided. A plasma generating apparatus for treating an implant prior to using the implant in a medical procedure is also provided.

An RF generating device 2, which attenuates harmonics in RF power amplified by an RF amplifier and supplied to plasma generating electrodes, includes an RF generation unit 201 that generates a composite wave by combining a fundamental wave with a compensation wave which is made by inverting a phase of a harmonic generated by inputting the fundamental wave.

A module for fueling a hydrogen cell is provided including a hydrogen production device, a hydrogen purification device and a hydrogen cell power generation system. The hydrogen production device comprises: a housing, a cavity being formed in the housing, and a first opening, a second opening and a third opening which all communicate with the cavity being formed in the housing; a plasma generating unit contained in the cavity and comprising a first electrode and a second electrode, the first electrode being close to the first opening, and the second electrode being close to the second opening; a voltage supply unit, a power supply end of the voltage supply unit being electrically connected to the first electrode and the second electrode, and a potential difference exists between the first electrode and the second electrode to generate plasma; a feeding unit communicating with the first opening; and an exhaust unit.

An elongate electrode is configured to flex and generate plasma to incise tissue. An electrical energy source operatively coupled to the electrode is configured to provide electrical energy to the electrode to generate the plasma. A tensioning element is operatively coupled to the elongate electrode. The tensioning element can be configured to provide tension to the elongate electrode to allow the elongate electrode to flex in response to the elongate electrode engaging the tissue and generating the plasma. The tensioning element operatively coupled to the flexible elongate electrode may allow for the use of a small diameter electrode, such as a 5 μm to 20 μm diameter electrode, which can allow narrow incisions to be formed with decreased tissue damage. In some embodiments, the tensioning of the electrode allows the electrode to more accurately incise tissue by decreasing variations in the position of the electrode along the incision path.

Disclosed is a radio-frequency plasma generating system including a radio-frequency generator and a plasma source, the radio-frequency generator being inductively or capacitively coupled to the plasma source through a resonant electric circuit, the radio-frequency generator being adapted to receive direct current power from a direct current power supply and for generating radio-frequency power at a frequency f, the radio-frequency power including a reactive radio-frequency power oscillating in the resonant electric circuit and an active radio-frequency power absorbed by the plasma. The radio-frequency plasma generating system includes a unit for measuring an efficiency of conversion E of direct-current power to active radio-frequency power absorbed by the plasma and a unit for adjusting the frequency f as a function of the measured efficiency of conversion E to maintain the efficiency of conversion E in a predetermined range within a RF plasma operational range.

A plasma emitting device includes plasma head configured to generate a plasmarized gas and jet the plasmarized gas so generated from a nozzle thereof, a gas supply device configured to supply a gas to the plasma head while controlling a flow rate of the gas, gas tube connecting the gas supply device with the plasma head to constitute a gas flow path, and pressure detector configured to detect a pressure of the gas supplied from the gas supply deice. Pressures of gases which are supplied to the plasma head are detected for use for various purposes, whereby the practical plasma emitting device is made up. Specifically, for example, a head clogging, which is a clog impeding a gas flow in the plasma head, can be determined without difficulty based on the detected pressure.

An exhaust pipe apparatus according to an embodiment includes a dielectric pipe; a radio-frequency electrode; and a plasma generation circuit. The exhaust pipe apparatus functions as a part of an exhaust pipe disposed between a process chamber and a vacuum pump that exhausts gas inside the process chamber. The radio-frequency electrode includes a thin metal plate disposed on an outer periphery side of the dielectric pipe, a buffer member disposed on an outer periphery side of the thin metal plate, and a conductive hollow structure disposed on an outer periphery side of the buffer member and a radio-frequency voltage is applied to the radio-frequency electrode. The plasma generation circuit generates plasma inside the dielectric pipe.

A method for generating atmospheric pressure cold plasma inside a hand-held unit discharges cold plasma with simultaneously different rf wavelengths and their harmonies. The unit includes an rf tuning network that is powered by a low-voltage power supply connected to a series of high-voltage coils and capacitors. The rf energy signal is transferred to a primary containment chamber and dispersed through an electrode plate network of various sizes and thicknesses to create multiple frequencies. Helium gas is introduced into the first primary containment chamber, where electron separation is initiated. The energized gas flows into a secondary magnetic compression chamber, where a balanced frequency network grid with capacitance creates the final electron separation, which is inverted magnetically and exits through an orifice with a nozzle. The cold plasma thus generated has been shown to be capable of accelerating a healing process in flesh wounds on animal laboratory specimens.

A plasma generator includes a coaxial tube assembly, a radio frequency (RF) electrode, and a feed including an inner circumferential surface that defines a first and second recesses at opposite, first and second ends of the feed. A first protrusion of the coaxial tube assembly is coupled to the first recess of the feed. A second protrusion of the coaxial tube assembly is coupled to the second recess of the feed. The feed includes first and second inner surfaces that define first and second insertion grooves in the inner circumferential surface at the first and second ends of the feed, respectively. First and second coil springs are at least partially within the first and second insertion grooves, respectively. The coaxial tube assembly, the RF electrode, and the feed provide an RF power transmission path based on the feed being coupled between the coaxial tube assembly and the RF electrode.