30 results about "Skin electrode" patented technology

In various embodiments, computer-implemented systems and methods for extracting pixel trajectories representing waveforms from a digital image, formed by lines and columns of picture elements, pixels, of a recording of an electrical activity of a human organ detected by on-skin electrodes, such as an electrocardiogram, ECG, or an electroencephalogram, EEG, are provided.

The invention belongs to the technical field of flexible electronics and wearable equipment, and particularly relates to a porous epidermal electrode based on liquid metal and a preparation method of the porous epidermal electrode. The porous skin electrode based on the liquid metal is composed of a liquid metal conducting layer and a porous elastic supporting layer, and is prepared through three key steps of composite solution preparation, three-phase two-interface system construction and gas-oil interface synergistic oil-water self-assembly. According to the innovative process, cooperative forming of the conductive layer and the porous supporting layer is achieved, and the liquid metal particles can be controllably distributed in micron-sized pores of the elastic supporting layer. The prepared porous liquid metal epidermal electrode has the core advantages of low interface impedance and high air permeability, high-precision and high-stability epidermal electrode detection can be performed on various biological signals, and a core technical solution with reliable performance is provided for the field of wearable medical diagnosis.

This invention discloses a non-contact electrocardiogram (ECG) measurement method using millimeter-wave radar. First, the original chest wall displacement signal acquired by the millimeter-wave radar is preprocessed to obtain a displacement feature branch input. Then, the original displacement signal undergoes cardiac sound band enhancement, wavelet denoising, and envelope extraction to obtain radar cardiac sound features. A hidden semi-Markov model is constructed to model the states of the first heart sound, systole, second heart sound, and diastole in the cardiac cycle, obtaining the posterior probability of the state at each time point. Next, the displacement features, radar cardiac sound features, and state probability features are input into a multi-branch convolutional fusion network, combined with a bidirectional long short-term memory network to achieve temporal correlation modeling, finally outputting the reconstructed human ECG result. This invention achieves non-contact ECG measurement without skin electrode contact by fusing the original mechanical displacement of the chest wall, the mechanical vibration features of the heart sounds, and the explicit state prior information of the cardiac cycle.

The application discloses a flexible skin layer electrode and a preparation method thereof, and relates to the technical field of brain-computer interface. The flexible skin layer electrode comprises a flexible supporting layer, a metal lead layer and a flexible packaging layer which are arranged in a stack. The metal lead layer is arranged between the flexible supporting layer and the flexible packaging layer. The metal lead layer comprises a plurality of spaced conductive wires. The flexible packaging layer covers the flexible supporting layer and the metal lead layer. The side of the flexible supporting layer and / or the flexible packaging layer facing the metal lead layer is provided with a plurality of protrusions. At least part of the protrusions are embedded between two adjacent conductive wires, and the protrusions form clamping to the metal lead layer. The application increases the force between the flexible supporting layer and / or the flexible packaging layer and the metal lead layer, thereby improving the problem that the metal lead layer is easy to fall off and improving the stability of the flexible skin layer electrode.

This disclosure relates to a method, device, and system used for identifying and treating responders to external nerve stimulation via a combination of a skin electrode assembly and a functional near-infrared spectroscopy (fNIRS) device. More specifically, this specification discloses a method for cutaneous stimulation of the trigeminal nerve, occipital nerve, vagus nerve, facial nerve and / or any of their branches, and a method for measuring cerebral blood flow in a target brain region.

The application discloses a graphene skin electrode based on conductive polymer transfer and a preparation method thereof. The graphene skin electrode based on conductive polymer transfer is a dry electrode obtained by covering a conductive polymer film on a single-layer graphene film. In the application, a surfactant and an ionic liquid are added into a pure PEDOT:PSS solution, and then a light, uniform and continuous conductive polymer film is formed on the surface of the graphene. The graphene improves the crystallinity of a PEDOT main chain, and the interaction significantly improves the conductivity of the electrode. The graphene skin electrode based on conductive polymer transfer prepared in the application is an ultrathin dry electrode with high transparency and high conductivity, can be conformally attached to the skin, and can be used for electro-physiological signal detection.

The invention relates to ultraviolet-cured high-viscoelasticity ionic conductive hydrogel as well as a preparation method and application thereof, and belongs to the technical field of functional polymer materials and bioelectronics. According to the hydrogel, an ultraviolet light sensitive zwitterionic monomer (SBMA), a high-density cationic monomer (DMDMAC), a cross-linking agent (PEGDA) and a photoinitiator are selected, and under the ultraviolet light exposure condition, the photoinitiator is decomposed to generate active free radicals to trigger a cross-linking polymerization reaction. The hydrogel has a three-dimensional network structure, integrates softness, high stretchability, strong tissue adhesion and high conductivity, and has fracture tensile strain gt; the adhesive strength is gt; and the ionic conductivity can reach 2.24 S / m. The preparation process is simple, rapid in-situ forming of the hydrogel on the skin surface can be achieved, the flexible biological electrode prepared based on the hydrogel has low skin-electrode interface impedance, motion artifacts are effectively inhibited, and the flexible biological electrode is suitable for long-term, dynamic and high-signal-to-noise-ratio biological electric signal monitoring and has good application prospects. And good biocompatibility and wearing comfort are achieved.

This invention discloses a method, apparatus, electronic device, and storage medium for modeling forward EEG problems. The method includes: segmenting brain tissue structures based on brain structural images; dividing the head domain into a global mesh based on the segmented brain tissue structures; creating a skin-like electrode template based on the electrode line distribution of skin-like electrodes; locally refining the mesh based on the center position, shape, and electrode line cross-sectional diameter of the skin-like electrodes to obtain a head model; obtaining a skin-like electrode model on the head model with electrode locations based on the skin-like electrode template; obtaining a corresponding source model based on mesh division of the cerebral cortex surface; and constructing a personalized EEG forward EEG model using the finite element method based on the head model, source model, and skin-like electrode model. This invention addresses the problem of complex electric field distribution in the scalp region covered by the electrodes due to the complex fractal serpentine mesh structure of skin-like electrodes, thus improving the modeling accuracy of forward EEG problems.

The invention belongs to the technical field of flexible electronics and wearable equipment, and particularly relates to a slit porous skin electrode based on metal nanowires and a preparation method of the slit porous skin electrode. The slit porous skin electrode based on the metal nanowires is composed of a nanowire conducting layer and a porous elastic supporting layer and is prepared through the key steps of metal nanowire surface modification, interface self-assembly, polymer porous structure regulation and control and the like, and integrated forming of a conducting network and a supporting structure is achieved. Wherein the conductive layer is a metal nanowire network which is in a close-packed state and is provided with slits, the elastic supporting layer is provided with a micron-sized pore structure, and the metal nanowires are partially embedded into the elastic supporting layer. The electrode has high conductivity, high stretchability and excellent air permeability, physiological signals such as skin electricity, electrocardio and myoelectricity can be stably collected even in a human body motion state, and a reliable device foundation is built for the field of wearable medical diagnosis.

The utility model relates to the field of digital teaching. The AR teaching aid based on skin electric signal acquisition comprises a teaching aid body and a skin electric signal acquisition module, and the teaching aid body is provided with a concave T-shaped inlaying groove; the skin electric signal acquisition module comprises a T-shaped embedding block matched with the embedding groove, a skin electrode plate is arranged on the surface of the embedding block, a mounting cavity is formed in the embedding block, and an ARM microprocessor electrically connected with the skin electrode plate and a communication sub-module are arranged in the mounting cavity; the ARM microprocessor is in communication connection with the AR system through the communication sub-module; the bottom of the insert block is further provided with a fixing assembly used for fixing the insert block in the inlaying groove. According to the utility model, the skin electric signal acquisition module is mounted on the teaching aid, so that physiological electric signals of students can be acquired in a non-inductive manner through natural contact between the students and the teaching aid in the teaching process, and the physiological electric signals are used as the basis of AR teaching.

The application discloses a kind of high-sensitivity bicontinuous film electrode and preparation method thereof, belong to wearable sensing technical field.It includes the following steps: preparation of polymer solution: high molecular weight powder is added to good solvent respectively, after dissolving it is stirred evenly, obtain polymer solution;Preparation of liquid metal-polymer mixed solution: liquid metal is added to polymer solution, mixed solution is evenly dispersed with homogenizer, obtain liquid metal-polymer mixed solution;Preparation of bicontinuous film electrode: after evenly dispersed mixed solution is removed good solvent by heating or freeze drying etc., obtain bicontinuous film electrode.Compared with prior art, the beneficial aspects of the present application can realize the stability of the monitoring signal of the skin electrode in the skin of various deformation scenarios and dynamic monitoring environment, and can monitor the characteristic electro-physiological signal in the disease scenario with high signal-to-noise ratio.

The present application relates to the technical field of conductive adhesive, in particular to a conductive hydrogel adhesive with temperature phase change characteristics for fixing skin electrode, comprising the following components by weight: structural component 5-20 parts; at least one selected from gelatin, collagen, agar, chitosan, sodium alginate, gellan gum, methyl cellulose and xanthan gum; conductive substance 1-5 parts; water retention component 5-10 parts; water 50-70 parts. The prepared adhesive has excellent adhesive performance and conductivity, low material cost, green environmental protection, simple use method, and can promote the optimized use of most electrodes on the market.

A device includes a monitor. The monitor includes at least one sensor configured to sense an electrical signal indicative of an analyte level of an analyte of a patient. The sensor includes a first electrode and a second electrode. The first electrode and the second electrode form an electrode pair configured to interact with the analyte and generate the electrical signal in response to the interaction. The second electrode is configured to be positioned on an epidermal layer of the patient.

The application relates to the technical field of low eutectic gel materials, and discloses a preparation method and application of a high-strength high-toughness high-conductivity silk micro-nano fibril restructured low eutectic gel. The preparation method comprises the following steps: based on the hydrogen bond network and the solvent effect of a choline chloride / acrylic acid type polymerizable low eutectic solvent (PDES), heat-stimulated silk fibers are in-situ depolymerized to form silk micro-nano fibrils (SMNF) which are strongly compatible with the system and serve as reinforced units of the restructured gel network; further, liquid metal droplets are used to directly induce in-situ polymerization of acrylic acid monomers in the SMNF-PDES mixed system at room temperature to prepare the SMNF restructured low eutectic gel, so that the mechanical properties and ionic conductivity of the low eutectic gel are synergistically improved, the inherent contradiction that the mechanical properties and ionic conductivity of the low eutectic gel are difficult to balance is solved, and the low eutectic gel can be used as a wearable strain sensor and a skin electrode and has potential application prospects in the fields of human motion monitoring, Morse code signal transmission and real-time monitoring of human bioelectric signals.

The present disclosure relates to the field of beauty instruments, and a skin care assembly are disclosed. The skin care assembly provided in the present disclosure includes a first cover, an electrode, and a cold compress component. The electrode is fixed on the first cover to discharge for a skin. The first cover is defined with a first opening, and the cold compress component is received in the first opening to contact and cool the skin during the electrode discharging for the skin. The electrode may provide a beauty effect to the skin by generating micro-current and radio frequency, and the cold compress component provides a suitable environment temperature for the skin, thus the beauty effect is improved.

Its purpose is to support operation. [Solution] The sensor includes a base material that expands and contracts in response to the movement of the human body, a strain sensor disposed on the base material for detecting the movement of the human body, and a skin electrode disposed on the base material to which a minute current is applied to assist the movement of the human body.

The invention relates to the technical field of flexible epidermal electrodes, in particular to a reconfigurable and self-adhesive bio-based epidermal dry electrode and preparation and application thereof. The method comprises the following steps: uniformly mixing gallium-based liquid metal microspheres, a sodium carboxymethyl cellulose solution, high gluten flour, a conductive filler and an auxiliary raw material, and standing to obtain the reconfigurable and self-adhesive bio-based epidermal dry electrode. A large number of hydrogen bond binding sites exist in the reconfigurable and self-adhesive bio-based epidermis dry electrode provided by the invention, so that the reconfigurable and self-adhesive bio-based epidermis dry electrode has reconfigurability and self-adhesion which are not possessed by a traditional dry electrode, and therefore, rapid construction of a high-reliability electrode-skin interface and enhancement of interface binding force of the high-reliability electrode-skin interface are realized; meanwhile, the bio-based epidermal dry electrode is made of a bio-based material, a traditional petroleum-based polymer is abandoned as a matrix, sustainable development of a flexible electrode technology is promoted, pollution is reduced, and biocompatibility is improved.

The present disclosure provides a structure of an electrode sheet having a low resistance and: reduces noise attributed to moments of force by physically and electrically strengthening fixation and connection between skin, an electrode, and a sensor module; reduces manufacturing cost by allowing the use of a general printing method for forming a wiring member of the electrode sheet; and reduces a wearing sensation felt by a subject during attachment.　To this end, an electrode device for a living body according to the present disclosure comprises an electrode sheet including at least a pair of electrodes for receiving a bioelectrical signal, a wiring member for transmitting the received bioelectrical signal, a sensor module for outputting a signal related to the bioelectrical signal to the outside, and a connection member for connecting the transmitted bioelectrical signal to the sensor module. The connection member is inserted into a hole, formed in the wiring member, with a fit tolerance for "transition fit" or "tight fit". As the wiring member is slid upward along the side surface of the connection member, the wiring member and the connection member are placed in close contact with each other and fixed together.

In various embodiments, computer-implemented systems and methods for extracting pixel trajectories representing waveforms from a digital image, formed by lines and columns of picture elements, pixels, of a recording of an electrical activity of a human organ detected by on-skin electrodes, such as an electrocardiogram, ECG, or an electroencephalogram, EEG, are provided.

A valve prosthesis system includes a prosthetic aortic valve (120) and a non-implanted unit. The prosthetic aortic valve (120) includes a plurality of prosthetic leaflets (32), a frame (30), a cathode (54) and an anode (57) mechanically coupled to the frame (30), and a prosthetic valve coil (36) in non-radio communication with the cathode (54) and the anode (57). The prosthetic aortic valve (120) does not include any active electronic components. The non-implanted unit includes an energy transmission coil, a sensing skin ECG electrode (106), and a non-implanted control circuit that drives the cathode (54) and the anode (57) to apply a pacing signal to the heart, detects at least one heart parameter using the sensing skin ECG electrode (106), and at least partially in response to the detected heart parameter, wirelessly transfers energy from the energy transmission coil to the prosthetic valve coil (36) via inductive coupling to set a parameter of the pacing signal. Other embodiments are also described.

A disposable, self-contained electro-stimulation device configured with paired cutaneous electrodes for placement over specific acupuncture and neurostimulation points (such P6) on a patient's wrist, delivering controlled electrical pulses to reduce or prevent nausea and vomiting following surgery or anesthesia. Its advanced circuitry trades boost-converter efficiency for total system energy conservation, optimized for the low-duty-cycle pulse output used in neuromodulation rather than continuous high-power operation. Its single-IC, digitally controlled pulse engine performs both biphasic stimulation and contact verification, optimizing it for compact, battery-powered wearable medical devices. It also uses a miniature Hall-effect magnetic-field sensor positioned over a planar helical trace that carries the stimulation current, producing a proportional magnetic field detectable by the Hall sensor for the non-invasive current detection and skin-contact verification.

The present disclosure relates to methods, devices, and systems for identifying and treating responders to external nerve stimulation via a combination of a skin electrode assembly and a functional near infrared spectroscopy (fNIRS) device. More specifically, disclosed herein are dermatological methods of stimulating trigeminal, occipital, vagus, facial nerves, and / or any branch thereof and measuring cerebral blood flow at a targeted brain region.

The application relates to a bionic paper-cut-shaped skin electrode for dynamic electrocardiogram monitoring of a human body and a preparation method, which is a three-electrode single-lead multilayer combined structure and comprises a top polydimethylsiloxane film layer, an adhesive layer, a copper metal functional layer, a copper metal interconnecting line and a bottom polyimide insulating layer arranged in sequence; the copper metal functional layer is composed of four groups of sub-units which are connected in series through four-edge arc flexible hinges in sequence, and a deformable closed loop is formed in the inside; each group of sub-units is composed of an N*N rigid dot array and a stretchable flexible hinge connected between adjacent dots, and the stretchable flexible hinge adopts a hexagon pattern hinge form similar to a snake abdomen; the copper metal interconnecting line is in a snake shape; the top polydimethylsiloxane film layer is tightly attached to one side of the adhesive layer and is fixedly connected, the copper metal functional layer is tightly attached to the other side of the adhesive layer and is fixedly connected, the copper metal interconnecting line is adhered and fixedly connected to the bonding pad of the copper metal functional layer, is tightly attached to the adhesive layer and is fixedly connected, and the bottom polyimide insulating layer is tightly attached to the other side of the copper metal interconnecting line and is fixedly connected. The application achieves good use effect.

The present disclosure relates to a method for obtaining a skin electrode patch and said skin electrode. One method according to the disclosure includes the steps of: applying conductive ink to a first polymeric layer; cutting one or more cutouts, on a second polymeric layer, for the conductive ink to contact with the skin-; arranging as consecutive layers: the first polymeric layer; the conductive ink; a flexible printed circuit board, PCB; the second polymeric layer; heat-pressing the arranged layers; wherein the conductive ink is configured to be exposed through said one or more cut-outs to the skin and to connect with the flexible PCB.

This invention discloses a flexible electrode, its preparation method, and its applications. The flexible electrode can be attached to human skin to detect physiological electrical signals. It comprises an upper electrode material, a porous support layer, and a lower electrode material stacked sequentially. The upper and lower electrode materials are self-healing electrode materials, comprising polyborosiloxane, conductive microparticles, and a coupling agent. The porous support layer is a porous SEBS film. The flexible electrode of this invention is human-friendly and can be used in complex motion scenarios where conventional commercial electrodes are difficult to apply. It overcomes problems such as electrode detachment due to movement, skin electrode contact impedance easily affected by deformation, interference from sweat and temperature, and skin allergies caused by long-term wear. It exhibits good skin conformability, high and low temperature performance, wide application scenarios, and excellent stability in use.

Electrode assemblies for applying Tumor Treating Fields (TTFields) to a subject's body can employ a sheet of graphite to spread out the heat and electrical current over the surface of the electrode assembly. But because graphite does not stretch, normal movements of the subject's body in certain anatomical locations can cause the electrode assemblies to peel away from the subject's body. The electrode assemblies described herein are shaped and configured in ways that reduce this tendency to peel away from the subject's body. This can be accomplished by configuring the sheet of graphite so that it has a main section and two protruding sections that extend from the main section into adjacent quadrants of a Cartesian coordinate system, with a gap disposed between the two protruding sections.

The present invention provides a low-resistance electrode sheet structure that firmly connects the skin, electrodes, and sensor module physically and electrically, reducing noise caused by force moments, and also reduces manufacturing costs by allowing the use of common printing methods to form the wiring components of the electrode sheet, as well as reducing discomfort to the subject when the sheet is attached. [Solution] The bioelectrode device comprises an electrode sheet having at least one pair of electrodes that receive bioelectric signals, a wiring member that transmits the received bioelectric signals, a sensor module that outputs signals related to the bioelectric signals to the outside, and a connecting member that connects the transmitted bioelectric signals to the sensor module. The connecting member is inserted into a hole drilled in the wiring member with an interlocking fit or interference fit, and the wiring member is pulled along the side of the connecting member and slides upward, so that the wiring member and the connecting member are in close contact and fixed together.

A method for parameter configuration in disposable ECG electrode-skin contact impedance test, the steps are: (1) selecting a voltage source with adjustable sinusoidal excitation amplitude, preparing a reference resistor R0 with adjustable resistance value, and preparing three disposable ECG electrodes A, B and C which are equidistantly attached to the skin; (2) forming a test circuit by connecting the selected and prepared adjustable voltage source, reference resistor R0 and the impedance between the two skin electrodes in series; (3) for each pair of a given voltage source sinusoidal excitation amplitude and a reference resistor R0 resistance value, repeating the test of the alternating current impedance spectrum of the electrode-skin contact impedance multiple times, and calculating the repeatability index; (4) changing the pairs of voltage source sinusoidal excitation amplitude and reference resistor R0 resistance value enough times, repeating the test of the alternating current impedance spectrum of the electrode-skin contact impedance multiple times under each pair, and calculating the repeatability index value; (5) comparing the repeatability index values to obtain the optimal parameter pair.

Neural stimulator systems with an external magnetic coil to produce changing magnetic fields is applied on the neck, in conjunction with one or more tiny injectable objects that concentrates the induced electric or magnetic field to the hypoglossal nerve and protects the user by limiting and charge-balancing the output. Additional and non-invasive neural stimulator systems apply alternating current at one skin electrode and receive oppositely rectified currents at two other skin electrodes.

The invention relates to the field of bioelectricity signal acquisition equipment, and discloses a mechanical interlocking epidermal electrode for bioelectricity signal acquisition and a preparation method, the mechanical interlocking epidermal electrode comprises a flexible polymer layer, a metal electrode layer and a hydrogel layer which are arranged in sequence, and the hydrogel layer is cured in situ on the metal electrode layer. The metal electrode layer and the in-situ cured hydrogel are mutually embedded to form a continuous seamless interface, so that the heterogeneous interface impedance is effectively reduced; the hydrogel layer has high conductivity, so that stable transmission of signals of the hydrogel layer can be ensured; the hydrogel layer has low Young modulus and high adhesion and can be matched with the modulus of the human skin, it is guaranteed that the epidermal electrode is stably attached to the human skin in a conformal mode for a long time, and meanwhile the requirement for collecting weak bio-electricity signals and the requirement for being tightly attached to the skin are met.