434 results about "Coated electrodes" patented technology

An electrosurgical stapling instrument includes an end effector capable of applying bipolar RF energy into tissue. The end effector has a first pole electrode and a second pole electrode for forming an RF contact circuit with tissue. At least one of the electrodes may have a dielectric coating thereon to create a RF circuit with tissue. The dielectric coating can cover one of the electrodes to create a capacitive coupling circuit with tissue, or can have at least one open passageway extending through the dielectric coating to enable tissue contact with the electrode and the passage of RF energy therethrough. The dielectric coating on the electrode can be masked to create passageways through the dielectric, or the dielectric coating can be locally removed with a variety of techniques to form passageways. The dielectric coating may provide a barrier to prevent shorting between the dielectrically coated electrode and a conductive fastener embedded within tissue. Alternately, a cartridge coating can be used to reduce an electric surface sheet charge on the cartridge thermoplastic that can occur during the application of RF energy to tissue.

An electrosurgical instrument for use in cutting and / or coagulating tissue includes a dielectric material, the dielectric material being positioned in the current pathway between the tissue-treatment regions of first and second electrodes. This can be achieved by providing one or more electrode surfaces coated with a dielectric material having a reactive impedance of less than 3,000 ohms / sq. mm. at 450 kHz. The dielectric coating acts to couple the RF signal into the tissue primarily by capacitive coupling, providing a more even heating of the tissue and the elimination of “hot spot”. Examples of electrosurgical instruments employing such coated electrodes include forceps, scissors or scalpel blade instruments.

There is provided a slowly implantable electrode. A coating for an electrode, the coating includes a shape-memory polymer. A method for inserting an electrode into brain tissue by inserting an implantable electrode having a shape-memory polymer coated electrode into brain tissue.

An object of the invention is to provide a method for delivery of macromolecules into biological cells, such as Langerhans cells (22) in the epidermis (20) of a patient, which includes the steps of coating electodes (16) in an electrode assembly (12) with solid phase macromolecules to be delivered, such as a DNA, and / or RNA vaccine or a protein-based vaccine, attaching the electrode assembly (12) having the coated electrodes (16) to an electrode assembly holder (13), providing a waveform generator (15), establishing electrically conductive pathways between the electrodes (16), and the waveform generator (15), locating the electrodes (16) such that the biological cells are situated therebetween, such as by penetrating the needle electrode (16) into the epidermis (20) above the epidermal basal lamina, and providing pulse waveform from the waveform generator (15) to the electrodes (16), such that macromolecule on the electrodes (16) is driven off of the electrodes (16), and delivered into the biological cells, such as the Langerhans cells (22).

Electrodes for use in electrochemical devices are disclosed. More particularly coated electrode particles for use in solid electrochemical cells and materials and systems for improving electronic conductivity and repulsive force characteristics of an electrode network are disclosed. An article containing a plurality of distinct first particles that form an electrode network in which the distinct first particles are coated with a system of electrically conductive material is also disclosed. In some embodiments, the coating layer also includes a low refractive index material. In some embodiments, the coating layer of the electroactive material includes a plurality of second particles.

An electrosurgical instrument includes a support member and an electrode. The electrode is disposed on the support member and has a coating disposed thereon. The coating includes a seed layer and an atomic-layer-deposition (“ALD”) layer. The ALD layer is hydrophobic or hydrophilic. The seed layer may be conductive or insulative.

The present invention provides an electrode in which an electrode active material particles as being interconnected are applied on current collector, wherein the interconnected surface of electrode active material particles is coated with a polymer, the polymer being present as an independent phase, while maintaining a pore structure formed among the interconnected electrode active material particles as well as an electrochemical device including the electrode. Also, the present invention provides a method for manufacturing an electrode coated with a polymer present on an interconnected surface of electrode active material as an independent phase, while maintaining a pore structure formed among the electrode active material particles, which comprises the steps of: (a) coating slurry for an electrode including an electrode active material on a current collector and drying it to form an electrode; and (b) dipping the electrode obtained from step (a) into a solution containing the polymer dissolved therein and a method for manufacturing an electrochemical device comprising the electrode obtained by the above method. The electrode coated with a polymer as an independent phase provides an electrochemical device with improved safety and prevents degradation of performance of an electrochemical device.

Disclosed is an electrode comprising a first organic / inorganic composite porous coating layer formed on its surface, wherein the first coating layer includes inorganic particles and a binder polymer for interconnecting and fixing the inorganic particles, and has micropores formed by interstitial volumes among the inorganic particles. An electrochemical device including the same electrode is also disclosed. Further, disclosed is a method for manufacturing an electrode having an organic / inorganic composite porous coating layer on the surface thereof, comprising the steps of: (a) coating a current collector with slurry containing an electrode active material and drying it to provide an electrode; and (b) coating the surface of electrode obtained from step (a) with a mixture of inorganic particles with a binder polymer. A lithium secondary battery including the electrode shows improved safety and minimized degradation in battery performance.

An object of the invention is to provide a method for delivery of macromolecules into biological cells in the tissues of a patient and includes the steps of: (a) providing electrodes (16) in an electrode assembly (12), wherein the electrodes have fixed electrode surfaces (42) which are coated with at least one static layer of electrode releasable molecules (44) to be delivered; (b) providing a waveform generator (15) for generating electric fields; (c) establishing electrically conductive pathways between the electrodes (16) and the waveform generator (15); (d) locating the electrodes (16) such that the biological cells are situated therebetween, and (g) providing electric fields in the form of pulse waveforms from the waveform generator (15) to the electrodes (16), such that molecules in the at least one static layer of the electrode releasable molecules (44) on the electrodes (16) are delivered into the biological cells. The electrode releasable molecules (44) can be either electric field separable molecules and / or solvent separable material. Another object of the invention is to provide an apparatus for carrying out the method of the invention. The static-coated electrode assembly (12) can be provided in a sterile package (24), from which the electrode assembly (12) is removed prior to use. The statically-coated electrode assembly (12) can be in a form of a disposable assembly (12) which is removable and replaceable from an electrode assembly holder (13).

An electrode comprising a primary and secondary metal nanoparticle coating on a metallic substrate is prepared by dispersing nanoparticles in a solvent and layering them onto the substrate, followed by heating. The enhanced surface area of the electrode due to the catalytic nanoparticles is dramatically enhanced, allowing for increased reaction efficiency. The electrode can be used in one of many different applications; for example, as an electrode in an electrolysis device to generate hydrogen and oxygen, or a fuel cell.

An electrosurgical stapling instrument includes an end effector capable of applying bipolar RF energy into tissue. The end effector has a first pole electrode and a second pole electrode for forming an RF contact circuit with tissue. At least one of the electrodes may have a dielectric coating thereon to create a RF circuit with tissue. The dielectric coating can cover one of the electrodes to create a capacitive coupling circuit with tissue, or can have at least one open passageway extending through the dielectric coating to enable tissue contact with the electrode and the passage of RF energy therethrough. The dielectric coating on the electrode can be masked to create passageways through the dielectric, or the dielectric coating can be locally removed with a variety of techniques to form passageways. The dielectric coating may provide a barrier to prevent shorting between the dielectrically coated electrode and a conductive fastener embedded within tissue. Alternately, a cartridge coating can be used to reduce an electric surface sheet charge on the cartridge thermoplastic that can occur during the application of RF energy to tissue.

An electrode coated with peptide nanostructures, composed of self-assembled peptides, is disclosed. The electrode is capable of conducting a response current resulting from an electrochemical reaction. The electrode can form a part of an electrochemical cell, a detector and a sensor array. Methods utilizing an electrochemical cell, a detector or a sensor array comprising the electrode for detecting an Analyte in a sample and kits containing same are also disclosed.

A coated electrode is provided for use in energy storage devices. The coated electrode comprises a dry fibrillized polymer that is fibrillized with no processing additives.

A coated electrode is provided for use in energy storage devices. The coated electrode comprises a dry particles that are fibrillized.

Implantable electrode leads, e.g. cochlear, spinal cord stimulation, or any type of neurostimulation leads, used in a patient's body to stimulate muscle or nerve tissue, provide enhanced stimulation for treating, e.g., hearing loss or chronic pain. One such lead includes, an implantable electrode array, adapted for insertion into a cochlea, which lead provides improved stability of electrode contact direction. In-line electrodes are spaced-apart along one side of a flexible carrier having non-conductive bumps coated with a bioresorbable material spaced apart between each electrode contact. Over time the bioresorbable material is absorbed thereby reducing chronic placement pressure caused during the insertion of the electrode array into the cochlea. The bioresorbable material may also serve as a carrier for drugs or other materials that would improve performance of the electrode for any type of lead.

Disclosed is an electrode comprising a first organic / inorganic composite porous coating layer formed on its surface, wherein the first coating layer includes inorganic particles and a binder polymer for interconnecting and fixing the inorganic particles, and has micropores formed by interstitial volumes among the inorganic particles. An electrochemical device including the same electrode is also disclosed. Further, disclosed is a method for manufacturing an electrode having an organic / inorganic composite porous coating layer on the surface thereof, comprising the steps of: (a) coating a current collector with slurry containing an electrode active material and drying it to provide an electrode; and (b) coating the surface of electrode obtained from step (a) with a mixture of inorganic particles with a binder polymer. A lithium secondary battery including the electrode shows improved safety and minimized degradation in battery performance.

The invention relates to an organic wastewater treatment film reactor utilizing solar energy photo-assisted electro-catalysis, which comprises a storage tank of water to be processed, a flow controllable constant flow pump, a photoelectric chemical reactor, a clear water storage tank and a solar battery component, wherein a photo anode and a cathode are correspondingly arranged in the reactor; the photo anode takes a porous metal membrane as a base body, and a TiO2 nano tube or a TiO2 mesoporous membrane is formed on the surface of a porous titanium membrane (net) by an electrochemical anisotropic etching technology; a porous channel film is used as the base body; a metal oxide coating electrode with high electrochemical catalytic activity and high electrical conductivity is prepared by a dipping film-forming method, simultaneously, by doping and modifying operations, the electrode material has photo catalytic activity and the reaction efficiency is improved. The reactor integrates electrochemistry, photocatalysis and film separation technologies; the three technologies are coupled to enhance a synergistic effect; the wastewater treatment efficiency can be improved; a solar component is adopted as a power supply; the clean solar energy is utilized to the maximal degree, and the organic wastewater treatment film reactor has social benefits of reducing environment load and economic benefits of reducing cost.

Apparatus and method for using a non-thermal plasma or corona discharge generated at multiple points and distributed to decontaminate surfaces and objects contaminated with chemical or biological agents. The corona discharge can be generated using very short high voltage pulses. The pulsed corona discharge can be directed at a contaminated surface through the unbraided strands at an end of a dielectric covered conductor. Another pulsed discharge embodiment incorporates a primary coil surrounding a chamber having a void filled with a plurality of secondary coils. A silent corona discharge can be generated using a variety of different configurations of a dielectric coated electrode and a bare electrode. The silent discharge is produced at all intersections between the dielectric covered electrode and the bare electrode. In one embodiment the apparatus comprises a blanket-like structure that is useful for decontaminating surfaces or decontaminating a fluid passing between spaced-apart bare electrodes.

The present invention provides an electrode designed for implantation into the central nervous system (CNS) of a mammal, wherein said electrode is substantially coated with interleukin-1 receptor antagonist (IL-1ra) or a coating composition comprising it, and the IL-1ra actively inhibits scarring on or around the surface of the electrode when implanted into the CNS. The electrode of the invention may be used for brain recording and / or stimulation, and can thus be used for treatment of a brain dysfunction, a brain disease or disorder, or a brain injury, as well as for brain computer interface, brain machine interface, or electrotherapy.

An object of the invention is to provide a method for delivery of macromolecules into biological cells in the tissues of a patient and includes the steps of: (a) providing electrodes (16) in an electrode assembly (12), wherein the electrodes have fixed electrode surfaces (42) which are coated with at least one static layer of electrode releasable molecules (44) to be delivered; (b) providing a waveform generator (15) for generating electric fields; (c) establishing electrically conductive pathways between the electrodes (16) and the waveform generator (15); (d) locating the electrodes (16) such that the biological cells are situated therebetween, and (g) providing electric fields in the form of pulse waveforms from the waveform generator (15) to the electrodes (16), such that molecules in the at least one static layer of the electrode releasable molecules (44) on the electrodes (16) are delivered into the biological cells. The electrode releasable molecules (44) can be either electric field separable molecules and / or solvent separable material. Another object of the invention is to provide an apparatus for carrying out the method of the invention. The static-coated electrode assembly (12) can be provided in a sterile package (24), from which the electrode assembly (12) is removed prior to use. The statically-coated electrode assembly (12) can be in a form of a disposable assembly (12) which is removable and replaceable from an electrode assembly holder (13).

The invention provides an Mxene-coated composite electrode material and a preparation method therefor. The preparation method comprises the following steps of (1) adding an electrode material into a solvent to be stirred uniformly, and then adding Mxene to be stirred to obtain a uniform mixed solution; (2) performing spraying granulation on the obtained mixed solution by a spray dryer to obtain Mxene-coated electrode material powder; and (3) performing sintering on the obtained composite electrode material powder under inert gas protection, and then performing cooling. By adoption of the spraydrying method to enable Mxene to coat the electrode material, and by virtue of Mxene, contact between an electrolyte and the electrode material can be blocked, and ion dissolving in the electrolyte and a self-discharge effect can be lowered; in addition, the Mxene is uniformly distributed among the electrode material particles, so that gaps among the electrode material particles can be reduced and the conductivity of the electrode material can be reinforced; and the method is simple in operation, low in cost and the production efficiency can be improved.

A microfluidic acoustic-based cell lysing device that can be integrated with on-chip nucleic acid extraction. Using a bulk acoustic wave (BAW) transducer array, acoustic waves can be coupled into microfluidic cartridges resulting in the lysis of cells contained therein by localized acoustic pressure. Cellular materials can then be extracted from the lysed cells. For example, nucleic acids can be extracted from the lysate using silica-based sol-gel filled microchannels, nucleic acid binding magnetic beads, or Nafion-coated electrodes. Integration of cell lysis and nucleic acid extraction on-chip enables a small, portable system that allows for rapid analysis in the field.

The invention is directed to an arrangement for generating extreme ultraviolet (EUV) radiation based on a plasma that is generated by electric discharge. It is the object of the invention to provide a novel possibility for radiation sources based on an electric discharge by which a long lifetime of the electrodes that are employed and the largest possible solid angle for bundling the radiation emitted from the plasma are achieved. According to the invention, this object is met by providing coated electrodes in the form of two endless strip electrodes which circulate over guide rollers and which have at a short distance between them an area in which the electric discharge takes place. The coating is at least partially sacrificed through excitation by an energy beam and generation of plasma, and means for driving each strip electrode are arranged in such a way that during a revolution the strip electrodes, after immersion in a molten metal, are guided through a wiper for generating a defined thickness of coating material, are directed in a vacuum chamber to a location where the desired generation of plasma takes place, and are guided back into the molten metal after the electric discharge in order to regenerate the coating and to make electric contact between the electrodes and a pulsed high-voltage source.

The invention is directed to an electrochemical cell having at least one of its electrodes produced by coating a slurry mixture of an active material, possibly a conductive additive, and a binder dispersed in a solvent and contacted to a perforated current collector foil. It is particularly important that the active slurry does not move through the perforations of the current collector. For this reason, a barrier is placed against the opposite side of the current collector to block the perforations as the current collector is being coated with the slurry. After volatilizing the solvent, a second, different active material is coated to the opposite side of the current collector, either as a slurry, a pressed powder, a pellet or a free standing sheet. An example of this is a cathode having a configuration of: SVO / current collector CFx. The opposed active materials on the current collector can also be of the same chemistry.

A process for the electrochemical production of peroxo-disulfuric acid and peroxo-disulfates is provided. In the process, an anode having a partially pre-polarized electrode which has been provided with a doped diamond layer is used.

A coated electrode is provided for use in energy storage devices. The coated electrode comprises a dry fibrillized polymer that is fibrillized with no processing additives.

It is a task of the present invention to provide an electrolytic apparatus for producing fluorine or nitrogen trifluoride by electrolyzing a hydrogen fluoride-containing molten salt, the electrolytic apparatus being advantageous in that the electrolysis can be performed without the occurrence of the anode effect even at a high current density and without the occurrence of an anodic dissolution. In the present invention, this task has been accomplished by an electrolytic apparatus for producing fluorine or nitrogen trifluoride by electrolyzing a hydrogen fluoride-containing molten salt at an applied current density of from 1 to 1,000 A / dm2, the electrolytic apparatus using a conductive diamond-coated electrode as an anode.

An electrosurgical instrument includes a support member and an electrode. The electrode is disposed on the support member and has a coating disposed thereon. The coating includes a seed layer and an atomic-layer-deposition (“ALD”) layer. The ALD layer is hydrophobic or hydrophilic. The seed layer may be conductive or insulative.

An electrochemical machining process for forming a non-circular hole from a substantially circular hole within a workpiece using an electrode. The electrode is made of an electrically conductive material and has insulated areas in which the electrically conductive material is coated with an insulating material, and exposed areas of metal or conductive material. The insulated areas and exposed areas extending in rows substantially along a longitudinal axis of the electrode. The electrode is first positioned in a substantially circular hole. An electric current is then applied to the electrode to electrochemically remove a predetermined amount of material from the substantially circular hole to form a non-circular hole. A variety of different non-circular shapes are achievable using the process.

The invention relates to a cathode and anode built-in ceramic micro-filtration membrane reactor suitable for removing pollutant in source water. According to the invention, titanium mesh is taken as cathode, an Sb element-doped titanium-based SnO2 coating A electrode or a mixed coating B electrode with TiO2 and SnO2 loaded on the basis of the A electrode serves as an anode, and the cathode faces to two sheets of anodes and is placed into a micro-filtration membrane module. The reactor applies extra electric field by constant voltage DC source, and operates under a continuous flow mode, the particles and colloid in source water can be filtered by the ceramic micro-filtration membrane with the aperture of 0.1-0.4 [mu]m, under electrocatalysis effect, a lot of substances with strong oxidizability is generated in water, and removal of the organic pollutants which are difficultly degraded is realized. doping of Sb can obviously increase the conductivity of SnO2, the coating of the electrode has physical sorption effect on HO., and has important effect for degrading an intermediate. According to the invention, TiO2 cavity loaded on the surface of the electrode provides more places for H2O for forming HO. with an adsorption state and organic matter molecules in a solution on the anode through discharging, so that the catalytic oxidation effect of the electrode is enhanced.