Colorado State University Research Foundation

Covidien LP

Coviden LP

Cameron A Moore

George J Collins

Il-Gyo Koo

Arlen K Ward

Myeong Yeol Choi

Jin-Hoon Cho

Jin Hoon Cho

Jeremiah H Collins

Abdur Rahman

Douglas A Scott

K Antioco Douglas

Douglas K Antioco

The present disclosure provides for a plasma system including a plasma device coupled to a power source, an ionizable media source and a precursor source. During operation, the ionizable media source provides ionizable media and the precursor ionizable media source provides one or more chemical species, photons at specific wavelengths, as well as containing various reactive functional groups and/or components to treat the workpiece surface by working in concert for synergetic selective tissue effects. The chemical species and the ionizable gas are mixed either upstream or midstream from an ignition point of the plasma device and once mixed, are ignited therein under application of electrical energy from the power source. As a result, a plasma effluent and photon source is formed, which carries the ignited plasma feedstock and resulting mixture of reactive species to a workpiece surface to perform a predetermined reaction.

Plasma-based chemical source device and method of use thereof

A plasma system includes a plasma device, an ionizable media source, and a power source. The plasma device includes an inner electrode and an outer electrode coaxially disposed around the inner electrode. The inner electrode includes a distal portion and an insulative layer that covers at least a portion of the inner electrode. The ionizable media source is coupled to the plasma device and is configured to supply ionizable media thereto. The power source is coupled to the inner and outer electrodes, and is configured to ignite the ionizable media at the plasma device to form a plasma effluent having an electron sheath layer about the exposed distal portion.

System and methods for plasma application

An electrosurgical generator is disclosed. The generator includes a radio frequency output stage configured to generate a radio frequency waveform and a sensor circuit configured to measure a property of the radio frequency waveform during a predetermined sampling period to determine whether an arc event has occurred. The generator also includes a controller configured to determine a total charge and/or total energy deposited by the radio frequency waveform during the predetermined sampling period associated with the arc event. The controller is further configured to adjust the output of the electrosurgical generator based on at least one parameter to limit arcing.

Real-time arc control in electrosurgical generators

A plasma device is disclosed. The plasma device includes: at least one electrode including a nanoporous dielectric layer disposed on at least a portion thereof, the nanoporous dielectric layer including a plurality of pores, wherein at least a portion of the plurality of pores include a catalyst embedded therein.

Plasma catalyst chemical reaction apparatus

A method for whitening teeth is disclosed. The method includes supplying a liquid sufficient to at least partially submerge a portion of a tooth; positioning a plasma device adjacent to the submerged portion of the tooth; supplying ionizable media to the plasma device; and igniting the ionizable media at the plasma device sufficient to form a plasma effluent in the presence of the liquid at the distal portion, whereby the plasma effluent reacts with the liquid to form at least one reactive species that interacts selectively with foreign matter disposed on the tooth.

Liquid-gas interface plasma device

The present disclosure provides for a plasma system. The plasma system includes a plasma device, an ionizable media source, and a power source. The plasma device includes an inner electrode and an outer electrode coaxially disposed around the inner electrode. The inner electrode includes a distal portion and an insulative layer that covers at least a portion of the inner electrode. The ionizable media source is coupled to the plasma device and is configured to supply ionizable media thereto. The power source is coupled to the inner and outer electrodes, and is configured to ignite the ionizable media at the plasma device to form a plasma effluent having an electron sheath layer about the exposed distal portion.

A plasma generating system, related method and device are disclosed. The plasma generation system includes a plasma generation device, a source of ionizable gas and a driver network. The plasma generation device includes a housing, an electrode, and a resonant circuit. The housing includes a passage defined therein and directs a flow of ionizable gas therethrough. The electrode is coupled to the ionizable gas flowing through the passage of the housing. The resonant circuit includes a capacitor and an inductor connected together in series. The resonant circuit has a resonance frequency and is coupled to the electrode. The resonant circuit receives an AC signal. The driver network provides the AC signal such that the AC signal has a frequency and excites the ionizable gas flowing through the passage of the housing to a plasma.

Growing community of inventors

Loveland, CO, United States of America

Cameron A Moore