46 results about "Skin electrode" patented technology

The invention discloses an in-situ autocatalytic forming gel epidermal electrode, an electrophysiological signal monitoring system and an electrophysiological signal monitoring device. The gel precursor includes a supramolecular solvent selected from a specific monomer, a metal ion catalyst, an initiator, a cross-linking agent, and a hydrogen bond acceptor and a hydrogen bond donor. The gel precursor provided by the invention can perform autocatalysis to initiate crosslinking to form a sensing medium with an interlocking structure, and meanwhile, can form a stable interface structure with the skin to ensure that the gel precursor is tightly attached to epidermal tissues, and motion artifacts caused by relative displacement in a motion process are reduced to the greatest extent. According to the invention, the electrode is formed by gelling the gel precursor on the skin surface, and the electrode has low interface impedance so as to ensure high signal fidelity, excellent mechanical stability, dynamic adhesion, stable electrochemical performance and biocompatibility, and can be reliably used for a long time. The method can be widely applied to wearable equipment, electronic skin, medical equipment and the like.

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 relates to the technical field of conductive adhesives, in particular to a conductive hydrogel adhesive with a temperature phase change characteristic for fixing a skin electrode, and the conductive hydrogel adhesive comprises the following components in parts by weight: 5-20 parts of a structural component; the gel is selected from at least one of gelatin, collagen, agar, chitosan, sodium alginate, gellan gum, methyl cellulose and xanthan gum; 1-5 parts of a conductive substance; 5-10 parts of a water retention component; and 50-70 parts of water. The prepared adhesive has excellent adhesive performance and conductivity, the material cost is low, the adhesive is green and environmentally friendly, the use method is simple and convenient, and optimal use of most electrodes in the market can be promoted.

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.

The beauty device disclosed herein comprises: a skin electrode portion, which is arranged on the head; a handle electrode portion, which is arranged on the handle portion; a voltage application circuit, which is used to apply a voltage between the skin electrode portion and the handle electrode portion to cause a current to flow between the skin electrode portion and the handle electrode portion through the human body; and a control portion, which controls the voltage application circuit. The control portion has a contact detection portion, which detects contact of the skin surface of the human body with the skin electrode portion. Before the contact detection portion detects contact, the control portion controls the voltage application circuit to apply a first voltage with a relatively high frequency. After the contact detection portion detects contact, the control portion controls the voltage application circuit to apply a second voltage with a relatively low frequency.

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.

Embodiments of the present techniques provide a tactile sensor, a method for making a tactile sensor, and a system for using a tactile sensor to obtain information about a contact on the tactile sensor. The tactile sensor comprises a multilayer structure which is flexible and stretchable and may be termed a sensor skin. Electrodes are attached physically and electrically to the edges of the multilayer structure and electrical impedance tomography EIT techniques are used to obtain information from the electrodes to determine a location and other information about a contact on the multilayer structure.

The invention discloses a multi-modal fusion intelligent video course creation system, which relates to the technical field of virtual reality digital technology system playing and comprises a multi-modal data input module, a multi-modal data processing module and a multi-modal course output module. A cross-modal knowledge graph is constructed by collecting data such as an industrial equipment operation video, a maintenance manual, a three-dimensional model, tactile feedback and galvanic skin response, multi-modal data semantic equivalent conversion is realized, and a new industrial scene is quickly adapted based on a meta-learning algorithm. The output course comprises videos and texts which are aligned in time sequence and a three-dimensional model which is subjected to spatial registration, and a tactile feedback effect is fused and is optimally presented according to a galvanic skin reaction. According to the system, the problems of insufficient practical operation experience and high scene adaptation cost of traditional training are solved, the training accuracy and efficiency are improved, courses can be applied to video monitoring, virtual reality equipment, intelligent consumption equipment and the like, and the system is suitable for industrial training, medical teaching and other scenes.

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.

The invention discloses a stretchable array dry electrode for surface electromyogram signal detection and a preparation method of the stretchable array dry electrode. The stretchable array dry electrode comprises a composite stretchable array electrode and a skin-electrode insulating layer; the stretchable array electrode is a gold electrode embedded in the ultraviolet curing adhesive; the skin-electrode insulating layer is made of a thermoplastic elastic material. The preparation method of the stretchable array dry electrode is simple in process, the stretchable array dry electrode is prepared through the discrete preparation and double-layer lamination technology and used for detecting surface electromyogram signals, and the electrode is of a double-layer structure and is divided into the stretchable array dry electrode and the skin-electrode insulating layer; the wearable non-invasive signal acquisition device has good compatibility and comfort, is suitable for long-term wearing and non-invasive signal acquisition, is suitable for large-scale preparation, and is beneficial to industrial production.

The application discloses an electrochemical method for loading adhesive polymer on the surface of an electrode and application, and the method comprises the following steps: sequentially performing cyclic voltammetry and constant potential method to realize rapid and patterned loading of the adhesive layer, and the method has the characteristics of flexible and simple operation, wide application range and repeatability. The flexible array electrode modified by the electrochemical method provided by the application only obtains the adhesive layer at the conductive part, so that the electrode has excellent adhesive performance, is more attached to human skin, and the stability of the skin-electrode interface is enhanced; when the electrode is attached to the skin for impedance testing, the skin interface impedance is lower than that of a commercial gel electrode, and the monitored electrophysiological signal is stable and accurate, meanwhile, the patterned loading characteristic can effectively prevent short circuit and signal crosstalk. The electrochemical method provided by the application is used as a modification technology, which is general and simple for electrophysiological sensors, and is of great significance for reducing the cost and improving the performance of wearable health monitoring devices.

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.

A sensor assembly (124) comprising at least one in-vivo analyte sensor (110) is proposed. The analyte sensor (110) comprises at least one at least partly implantable portion. The analyte sensor (110) comprises at least two subcutaneous electrodes (116, 118) arranged at least partially at the implantable portion. At least one of the subcutaneous electrodes (116, 118) comprises at least one membrane element (120) exhibiting at least one physical property. The sensor assembly (124) comprises at least one on-skin electrode (126). The sensor assembly (124) comprises at least one electronics unit connectable to the analyte sensor (110) and the on-skin electrode (126). The electronics unit comprises at least one reference resistance. The electronics unit is configured for determining the physical property of the membrane element (120) by measuring a voltage distribution between the reference resistance and a circuit comprising the subcutaneous electrode (116, 118) comprising the membrane element (120) and the on-skin electrode (126).

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 is an underwater diving mask integrating sensors for recording cerebral ElectroEncephaloGraphic (EEG) activity, protected from the aqueous environment by a double skirt ensuring both sealing by the external skirt (1) and the integration and immobilization of cutaneous electrodes (4) in the internal skirt (2) on and under the orbits, a transmission system via waterproof cables running in the lateral and upper straps of the mask and signal collection managed by a waterproof box (11) at the rear of the mask, a possible coupling with a video camera, and sound feedback by bone conduction (7) of the analyzed EEG data.This invention ensures the collection and processing of cerebral electrical activities, eye movements, possibly synchronized with a video capture of the environment, via an integration of the sensors within the underwater mask, allowing an optimization of the contact of the electrodes and their isolation from the aqueous environment. Figure for the abstract: Figure 4.

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.

The invention provides a tough-sticky double-layer structure epidermal electrode and a preparation method and application thereof, and relates to the technical field of epidermal electrophysiological signal acquisition, the electrode comprises a high-toughness back bottom layer made of a composite material containing a back bottom substrate and a conductive filler; the adhesive gel layer is composed of a composite material containing a gel matrix and a conductive solvent; and the adhesive gel layer is cured in situ on the surface of the tough back bottom layer to form the tough-adhesive double-layer structure skin electrode with a seamless interface. According to the tough-sticky double-layer structure epidermal electrode provided by the invention, the mechanical property of the epidermal electrode is improved, and meanwhile, the tough-sticky double-layer structure epidermal electrode has the properties of adhesion and low interface impedance and can realize high-fidelity acquisition of electrophysiological signals in a complex mechanical environment.

An apparatus, system, and method of reducing and controlling values of at least one characteristic (e.g., impedance) associated with biopotential-signal sensors is provided. The apparatus, system, and method includes monitoring—based on data from a wearable device that includes a biopotential-signal sensor, a characteristic-stabilizing component, and a characteristic monitor—a characteristic at the sensor-skin interface that impacts the biopotential-signal sensor's ability to sense biopotential signals. In accordance with selecting a biopotential-signal sensitivity need, provide an adjustment (e.g., stimulation) to the characteristic in accordance with a sensitivity-stabilizing mode until the characteristic satisfies the first biopotential-signal sensitivity need. The adjustments may be provided in various methods to achieve desired results.

A sensor assembly (124) comprising at least one in-vivo analyte sensor (110) is proposed. The analyte sensor (110) comprises at least one at least partly implantable portion. The analyte sensor (110) comprises at least two subcutaneous electrodes (116, 118) arranged at least partially at the implantable portion. At least one of the subcutaneous electrodes (116, 118) comprises at least one membrane element (120) exhibiting at least one physical property. The sensor assembly (124) comprises at least one on-skin electrode (126). The sensor assembly (124) comprises at least one electronics unit connectable to the analyte sensor (110) and the on-skin electrode (126). The electronics unit comprises at least one reference resistance. The electronics unit is configured for determining the physical property of the membrane element (120) by measuring a voltage distribution between the reference resistance and a circuit comprising the subcutaneous electrode (116, 118) comprising the membrane element (120) and the on-skin electrode (126).