338 results about "Electrode placement" patented technology

The invention discloses a dam leakage detection method based on combination of a circuit and an electromagnetic field. The method comprises the following steps: step 1, placing an emission electrode at a certain depth in a water area on one side of an upstream face of a dam; 2, a loop electrode is placed at the position 3 meters away from one side of the downstream face of the dam; step 3, connecting the emission electrode and the loop electrode by using a power supply to form a planar array; 4, detecting a voltage signal of the electromagnetic wave by the collecting electrode; step 5, placing a horizontally polarized loop antenna on one side for transmitting, and symmetrically placing a vertically polarized loop antenna and a line antenna on the other side for receiving; and 6, detecting the vertical position of the leakage path by using a common depth method. According to the detection method disclosed by the invention, the detection efficiency and precision can be improved, weak leakage can be accurately positioned, the operation is simple, operation by using a ship in water is not needed, and a dam structure does not need to be damaged by drilling.

The invention discloses a flexible pulse energy delivery device and an interventional ablation method. The device comprises an electrode assembly, a flexible tube body assembly, a control assembly and an ablation system. The electrode assembly is configured to transmit pulse energy to a target focus in an organ for electroporation ablation, and the flexible tube body assembly is configured to transfer the electrode assembly to a first distance range of the target focus; the electrode assembly is arranged at the head end and / or the surface of the flexible pipe body assembly and moves and abuts against the flexible pipe body assembly. A positioning sensor in the flexible tube body assembly is used for obtaining position information of the electrode assembly, and the ablation system establishes a three-dimensional image according to the position information. According to the scheme, through real-time electromagnetic positioning navigation guidance, the electrode arrangement and conveying difficulty is reduced; unipolar and bipolar mode ablation can be carried out, the influence of tissue impedance on a formed ablation loop is small, and pulse energy is controllable; the conveying direction of the catheter can be flexibly adjusted, and the success rate of the irreversible electroporation ablation operation is increased.

Methods and systems for monitoring the activity of electrogenic networks are described. One representative system includes an array of electrode coupled to an analyzer having a stimulator and a receiver. The electrode is placed in contact with an electrogenic cell. The electrodes can be shaped as nanowires, tubes, cavities and / or cones. The analyzer may be configured to operate in a voltage stimulation mode, in which the cells are stimulated via voltages and monitored via current, or in a current stimulation mode, in which the cells are stimulated via currents and monitored via voltages. The analyzers may be arranged as single-stage amplifiers, and may include a feedback loop shared between the stimulation signal path and the sensing signal path. The feedback loop may be arranged to provide overlapping stimulation and sensing of the electrogenic network's cells.

The bimetallic welding method comprises the steps that a plurality of annular grooves are formed in the surface, welded to a copper plate, of a steel base body, and a plurality of annular protrusions are formed on the surface of the steel base body; the steel substrate is placed on the lower electrode, and the copper plate is placed on the annular protrusion on the surface of the steel substrate; an upper electrode is placed on the copper plate, and set pressure is applied to the upper electrode; after the set pressure is reached, electrifying the upper electrode, and heating the annular bulge on the surface of the steel substrate to a molten or plastic state according to the generated resistance heat, so that the annular bulge is combined with the copper plate to finish welding; according to the double-metal welding method, the high-pressure energy storage welding process is used for replacing an original silver welding process using precious metal such as silver, and the cost is greatly reduced. Brass is used for welding, the welding method can be applied to the working condition higher than 400 bar, the abrasion resistance is high, and the product performance is improved.

The invention relates to the technical field of intelligent medical assistance, in particular to a skin disease treatment electrode positioning system based on potential distribution. The system comprises a potential gradient severe region identification module, a lesion minimum surrounding region identification module, a similar potential region grouping module, an optimal electrode position prediction module, an electric field distribution calculation module, a sweat gland dense region identification module, an optimal electrode placement point screening module, an enhanced feature generation module and a final electrode position determination module. By fusing multi-source information such as skin surface potential distribution, lesion geometric characteristics, tissue conductivity, historical treatment data and the like, systematic optimization is performed on electrode positioning in skin disease treatment, the effectiveness of electrode stimulation is maximized on the premise of ensuring the treatment safety, and the treatment efficiency is improved. An accurate electrode placement scheme is provided for treatment of different types of skin diseases, and the method is suitable for accurate determination of the electrode placement position in electrical stimulation treatment.

The invention relates to the technical field of SF6 treatment, and particularly discloses a method and a system for degrading SF6 based on placing copper rings on a DBD inner electrode, and the method comprises the following steps: conveying accurately proportioned and diluted SF6 into a DBD reactor, discharging an electrode bar in the DBD reactor to form an electric field, and changing a partial discharge gap and the electric field by using a plurality of copper rings on the electrode bar to complete the degradation of the SF6; according to the invention, diluted SF6 is sent into a plasma environment, SF6 molecules are bombarded by high-energy electrons, ionization and excited state molecules, a cracking reaction is carried out, a low-toxicity or non-toxic decomposition product is generated, and the generated decomposition product is more convenient for adsorption treatment compared with SF6, so that the consumption of diluted gas is reduced, the cost waste is reduced, and the degradation efficiency of SF6 is effectively improved.

An electrode carrier system includes one or more electrode assemblies having an electrode body. One or more tubular members extend from the electrode body and define a lumen terminating in a distal opening. The electrode assemblies carry a reservoir containing a conductive fluid or gel. The reservoir is in fluid communication with the lumens in the tubular members, and the electrode assemblies are typically supported on a backing which may optionally be configured as a headband. Systems are for tracking patient movement may be used in combination with the electrode carrier system.

A wearable device for recording biometric information from a person's brain can be embodied in a pair of smart headphones with electrodes or in a biauricular headset with electrodes. This wearable device can position a plurality of electrodes on a person's head at a subset of the following MCN electrode placement sites: CP1, CP2, CP3, CP4, CP5, CP6, CPz, FC1, FC2, FC3, FC4, FC5, FC6, FCz, O1, O2, Oz, P7, P8, PO7, PO8, TP7 and TP8.

The invention discloses a noninvasive deep time domain interference electrical stimulation system and method applied to spinal cord rehabilitation, and belongs to the technical field of medical instruments. Difference frequency current is output through the two groups of electrode pairs connected to the electrical stimulator body, so that time domain interference stimulation is generated for the spine, and difference frequency envelope is generated in human tissue. Moreover, the lead wire connected with the electrode is provided with the length scale, so that measurement can be conveniently carried out on the skin on the surface of the spine, and the placement position of the electrode on the surface of the back skin can be quickly determined. The invention further provides an electrical stimulation parameter optimization method, an optimal electrode placement scheme can be quickly generated for a target object, and the difficulty of performing spinal cord rehabilitation by using noninvasive deep time domain interference electrical stimulation clinically is greatly simplified.

The utility model belongs to the technical field of electrode shaping tools, and particularly provides an electrode shaping device which comprises a supporting assembly, an upper mold assembly and a lower mold assembly, the upper mold assembly is installed on the supporting assembly and can move in the vertical direction relative to the lower mold assembly, and the lower mold assembly is located below the upper mold assembly. A catheter positioning groove used for containing a catheter is formed in the top of the lower die assembly, an electrode positioning boss is arranged at the position, corresponding to the upper die assembly, in the catheter positioning groove, and the electrode positioning boss is used for being matched with the upper die assembly to form a cavity for limiting the shape and size of an electrode. The guide pipe is placed in the guide pipe positioning groove, so that the guide pipe can be positioned, and the guide pipe is effectively prevented from shaking and inclining; the electrode can be positioned by placing the electrode on the electrode positioning boss, and it is guaranteed that the upper die assembly is accurately pressed on the electrode; the shape and the size of the electrode are limited through the cavity formed by matching the electrode positioning boss with the upper die assembly, so that the shape and the size of the electrode can be accurately controlled.

An electrode carrier system includes one or more electrode assemblies having an electrode body. One or more tubular members extend from the electrode body and define a lumen terminating in a distal opening. The electrode assemblies carry a reservoir containing a conductive fluid or gel. The reservoir is in fluid communication with the lumens in the tubular members, and the electrode assemblies are typically supported on a backing which may optionally be configured as a headband. Systems are for tracking patient movement may be used in combination with the electrode carrier system.

An emergency cardiac and electrocardiogram (ECG) electrode placement device is disclosed herein. The emergency cardiac and electrocardiogram (ECG) electrode placement device incorporates electrical conducting materials and elastic material into a pad that is applied to a chest wall of a patient, which places multiple electrodes in the appropriate anatomic locations on the patient to quickly obtain an ECG in a pre-hospital setting.

Implantable medical devices for use in or on the eye. An implantable device may have at least one electrode thereon for issuing therapy, such as via electrical current or voltage, while implanted in or on the eye, for the treatment of one or more of macular degeneration, glaucoma, presbyopia, or other condition or disease of the eye. The implantable device may comprise a transducer for receiving power from an external device that may be worn on the patient using any of optical, inductive, mechanical or radiated energy. An example includes an implantable device for placement on the retina which has a gap or opening to place electrodes near the maculae without covering the fovea. Other examples may target other portions of the eye anatomy.

A method for producing hydrogen gas through electrolysis of a salt water solution using an electrode with a sedimentary rock portion includes placing a first electrode comprising a metallic material in a salt water solution and positioning the first electrode in a tower. The method further includes placing a second electrode comprising a metallic material portion and a sedimentary rock portion into the salt water solution. The method further includes allowing the salt water solution to permeate at least a portion of the sedimentary rock portion. The method further includes connecting a direct current (DC) power supply to the first and second electrodes. The method further includes applying, using the power supply, a DC voltage between the first and second electrodes, thereby causing electrolysis of at least a portion of the salt water solution and producing hydrogen gas in the tower.

An electrode carrier system includes one or more electrode assemblies having an electrode body. One or more tubular members extend from the electrode body and define a lumen terminating in a distal opening. The electrode assemblies carry a reservoir containing a conductive fluid or gel. The reservoir is in fluid communication with the lumens in the tubular members, and the electrode assemblies are typically supported on a backing which may optionally be configured as a headband. Systems are for tracking patient movement may be used in combination with the electrode carrier system.

Systems, apparatuses, and methods described herein facilitate the placement of spinal cord stimulator (SCS) electrode in relationship to neural tissue of the spinal cord based on electromyography (EMG) data. The systems, apparatuses, and methods are designed to assist physicians and surgeons target specific neurophysiological locations through stimulation and subsequent visualization of EMG activity in response to stimulation to more precisely identify the location of the SCS electrodes that will maximize the intended therapeutics effects of SCS.

The utility model discloses an electrode coping waste collecting device, and relates to the technical field of waste collection, the electrode coping waste collecting device comprises a working table, the bottom of the working table is fixedly connected with a fixing column, the working table is provided with a collecting mechanism, and the working table is provided with a separating mechanism. A worker places an electrode needing to be ground on the workbench, the electrode is ground through the grinding machine, chippings generated in the electrode grinding process can fall into the channel, due to the existence of the filter plate, the chippings can be blocked, cooling liquid passes through the channel, then the motor is started through the controller in the grinding process, and the chippings can be ground through the motor. According to the mechanism, a motor drives a threaded rod to rotate, when the threaded rod rotates, a push plate can be driven to move on the surface of a filter plate, the mechanism can push chippings staying on the surface of the filter plate into a collecting shell through the push plate to complete collection, and meanwhile, a brush can prevent some tiny chippings from being adsorbed on the filter plate.

An electrode placement device allows placement and fixation of electrocardiogram (EKG) electrodes. Proper adherence of electrodes to predetermined positions on the epidermal surface is facilitated by a plurality of elongated placement members extending from a base that align with the electrodes. Each electrode is biased against the patient sensing region, typically the chest of an EKG patient, by prongs flanking the electrode at the distal end of each of the placement members. Flanking prongs engage an outer perimeter of a flexible, skin placed electrode, while a gap between the prongs allows for a signal wire to the electrically conductive center. Problems with weak adhesion from sweat, dirt or poor adhesive are avoided by a modest biasing force imposed equally on all electrodes from manual pressure applied to the base.

The invention discloses a flexible zinc ion battery positive electrode constructed through 3D printing and a preparation method and application thereof. Polyvinylidene fluoride and N-methyl pyrrolidone are mixed, heated and stirred to form gel, the carbon nanotube coated MOF-based composite material and carbon black are added, ball milling is performed, and printable positive ink is prepared; the method comprises the following steps: filling printable positive electrode ink into an injector, connecting the injector to an air pressure control device of a printer, uniformly extruding mild ink, after printing is completed, placing an obtained electrode in a ventilation cabinet, drying and removing a soldering flux. According to the flexible zinc ion battery positive electrode constructed through 3D printing, a three-dimensional network structure of a carbon nanotube coated MOF material and carbon black is prepared through a 3D printing method, rapid transmission of zinc ions is guaranteed, and the flexible zinc ion battery positive electrode has high specific capacity and long cycle stability, meanwhile has good flexibility, is simple in preparation process and short in time consumption and has good industrialization prospects.

The present invention provides a method for determining the safety boundary of an arc induced by jetting due to thermal runaway of a battery, which belongs to the field of battery safety technology. The method for determining the safety boundary of an arc induced by jetting due to thermal runaway of a battery comprises building an experimental platform for an arc induced by jetting due to thermal runaway of a battery; setting an operating range, conducting an arc induced by jetting due to thermal runaway of a battery, and obtaining critical conditions; calculating the arc ignition critical electric field strength based on an electric field strength calculation formula, converting the electric field strength into a voltage-electrode spacing relationship to obtain a safety boundary; adjusting the electrode placement height, and repeating the above steps to obtain the safety boundary of an arc induced by jetting due to thermal runaway of a battery at different electrode heights. The present invention provides a method for determining the safety boundary of an arc induced by jetting due to thermal runaway of a battery, which can solve the problem that the evaluation of electrical safety and the confirmation of the danger of arc induced during thermal runaway not only involve high-risk operations under high-temperature and high-pressure conditions, but also consume a lot of manpower and material resources.

An embodiment provides a capacitor including: a body including a substrate and a capacitive portion disposed on the substrate, and a first external electrode and a second external electrode disposed on the body and having a plate-shaped structure. The capacitive portion includes an insulating layer with a plurality of trenches, a first internal electrode disposed on the insulating layer and electrically connected to the first external electrode, a dielectric layer disposed on the first internal electrode, and a second internal electrode disposed on the dielectric layer and electrically connected to the second external electrode.

Systems, apparatuses, and methods described herein facilitate the placement of spinal cord stimulator (SCS) electrode in relationship to neural tissue of the spinal cord based on electromyography (EMG) data. The systems, apparatuses, and methods are designed to assist physicians and surgeons target specific neurophysiological locations through stimulation and subsequent visualization of EMG activity in response to stimulation to more precisely identify the location of the SCS electrodes that will maximize the intended therapeutics effects of SCS.

The utility model discloses a primary battery preparation device which comprises two electrodes, two electrolyte containers, two hollow pipes and a salt bridge, electrolyte solution is contained in the electrolyte containers, hooks are arranged on the side walls of the hollow pipes, the side walls of the electrolyte containers are detachably connected with the hooks, and the salt bridge is arranged on the hollow pipes. An electrode mounting tube is mounted in the hollow tube in a sliding manner; and the salt bridge comprises a three-way glass tube, a semi-permeable membrane and a silicone tube. The device has the beneficial effects that the treated electrode is placed in the closed space formed by the electrode mounting tube and the hollow tube, the electrode is protected by inert gas, the electrode is prevented from being oxidized by air after an experiment is finished, the electrode can be subjected to a next experiment without being subjected to surface treatment, and the experiment efficiency is improved. Meanwhile, the semi-permeable membrane is fixed to the lower pipe opening of the three-way glass pipe through the silica gel pipe and serves as a salt bridge medium, a semi-permeable membrane salt bridge is convenient to add filling liquid and does not deteriorate, and the semi-permeable membrane is very convenient to replace.

The invention belongs to the technical field of hemispherical resonator gyroscope welding, and particularly relates to a hemispherical resonator gyroscope electrode and base welding device and method. The device comprises a vacuum glass cover, a base, a constant-temperature laser, a base, an electrode positioning seat, a positioning pin, welding flux, an electrode and an electrode base, the electrode base is arranged at the bottommost part, and the electrode positioning seat is placed in a central groove of the electrode base; the electrode is placed in a positioning cavity of the electrode positioning seat and is coaxial with the electrode positioning seat; the lower end of the positioning pin is inserted into the positioning hole of the electrode base, and the upper end of the positioning pin is inserted into the positioning hole of the base; the base is arranged below the base base, and the top surface of a contact pin on the base is in close contact with a gold film on the upper end surface of the plate electrode; the vacuum glass cover covers the whole assembly structure; the welding flux is arranged above the electrode and wraps the top of the welding pin; the constant-temperature laser is located outside the whole assembly structure.

The utility model provides an electrode welding turnover platform. The electrode welding turnover platform comprises a rack; and the mounting frame is fixedly mounted on the inner side face of the rack, a transverse rod is fixedly mounted on the inner side face of the mounting frame, a lead screw motor is fixedly mounted at the top of the transverse rod, and a lead screw lifter is fixedly mounted at the output end of the lead screw motor. According to the electrode welding turnover platform provided by the utility model, the operation motor, the turnover block, the rack, the lifting platform, the turnover motor, the coupler, the hydraulic rod and other structures are matched with one another, when the electrode welding turnover platform is used, an electrode needing to be welded is placed at the output end of the turnover block and the output end of the coupler, and the hydraulic rod extends; according to the electrode overturning device, the electrode is clamped, so that during subsequent use, the overturning motor rotates to drive the electrode to rotate reversely, the electrode does not need to be manually fixed to be matched with other equipment for overturning, the operation steps are reduced, and the working efficiency is improved.

Provided is an animal biological information measurement device that allows an electrode to be placed at a desired position on the body of an animal. Provided is an animal biological information measurement system comprising the animal biological information measurement device. Provided is an animal biological information measurement method using the animal biological information measurement system.　An animal biological information measurement device (1) comprises: a substrate (2); an electrode (3) that is provided on the substrate (2) and is used for acquisition of biological information of an animal in contact with the electrode (3); and a grip member (4) that is connected to the substrate (2) and grips hair of the animal.

A method of operating a cardiac rhythm management (CRM) system includes recurrently calculating, by a medical device of the CRM system, impedances between a housing electrode included in a housing of the medical device and each of multiple pacing electrodes, wherein the multiple pacing electrodes include a left bundle branch pacing electrode configured for placement in a left bundle branch of a subject; comparing the calculated impedances to one or more specified impedance values; and producing an alert regarding placement of a pacing electrode in response to a calculated impedance corresponding to the pacing electrode differing from the one or more specified impedance values by a predetermined threshold impedance value.

A micro analysis chip capable of performing stable analysis is provided. The micro analysis chip includes a flow passage region surrounded by a flow passage wall disposed in the interior of a porous substrate, wherein the flow passage region includes a first flow passage chamber, a second flow passage chamber, and a flow passage to connect the first flow passage chamber to the second flow passage chamber, a reference electrode is disposed in the first flow passage chamber, a working electrode is disposed in the second flow passage chamber, and an electrolyte is arranged upstream of the reference electrode with reference to a forward direction of a specimen in the flow passage region.

Systems and methods for electroencephalography headband apparatuses including a strap member, an amplifier device, and electrode assemblies each including a capsule receiving structure having a detent feature configured to resist rotation of a gel capsule positioned there within, a stabilization structure having a central attachment section and a plurality of leg members positioned radially outward from a central axis of the electrode assembly, and a gel delivery structure configured to be positioned at least partially within the capsule receiving structure and to rotatably attach to the stabilization structure such that the gel delivery structure may be able to rotate independently of the stabilization structure. The gel delivery structure may include a plurality of teeth members configured to engage with and lacerate a lower surface of the gel capsule and a plurality of gel delivery channels configured to deliver gel from the gel capsule to patient scalp.

A semiconductor device includes an N+ type substrate, an N− type layer disposed on a first surface of the N+ type substrate and having a trench opened to a surface opposite to the surface facing the N+ type substrate, a P type region disposed in the N− type layer and disposed on a side surface of the trench, a gate electrode disposed in the trench, and a source electrode and a drain electrode insulated from the gate electrode. The N− type layer includes a P type shield region covering a bottom surface and an edge of the trench.