58 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.

A neurostimulation system can include a skin electrode pad configured to be attached to an external electrostimulation electronics unit for treating a subject using transcutaneous neurostimulation therapy, and the electrode pad can include a rehydratable hydrophilic foam layer. The rehydratable hydrophilic foam layer can be sized and shaped to be received within a receptacle of an electrode rehydrator to recurrently receive moisture from the electrode rehydrator to be rehydrated.

The invention relates to a system for synchronized respiratory muscular electrical stimulation of a patient. The system comprises: a transcutaneous electrostimulation of the respiratory muscles (TERM) system comprising one or more skin electrodes configured to be placed over the respiratory muscles of the patient; at least one sensor for sensing the breathing state of the patient; and a processor configured to receive the breathing state of the patient from the at least one sensor and actuate the TERM system when the breathing state is in the inspiration phase and / or the expiration phase. The TERM system comprises at least one calibratable element, and the processor (30) is further configured to actuate the TERM system (10) in a predetermined way according to a previous calibration. The invention also relates to a method and computer program product thereof.

A wearable real-time stroke detector apparatus can be configured to be coupled to one or more EEG skin electrodes located on a subject for performing real-time stroke detection. This can include signal processor circuitry. Power spectral density (PSD) circuitry receive an acquired EEG signal acquired via a channel coupled to a skin electrode of the one or more EEG skin electrodes. The PSD circuitry can compute a monitored PSD EEG signal using the acquired EEG signal. Baseline-adjustment circuitry form a baseline-adjusted monitored PSD EEG signal using the monitored PSD EEG signal and the baseline PSD EEG signal. Classifier circuitry can use a trained model to classify a temporal shift in the baseline-adjusted monitored PSD EEG signal, over a specified range of frequencies, to produce an alert indicating Detected Stroke based on the classified temporal shift as determined by the classifier circuitry using the trained model.

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.

Disclosed are devices, systems, and methods for determining the dipole densities on heart walls. In particular, a triangularization of the heart wall is performed in which the dipole density of each of multiple regions correlate to the potential measured at various located within the associated chamber of the heart. To create a database of dipole densities, mapping information recorded by multiple electrodes located on one or more catheters and anatomical information is used. In addition, skin electrodes may be implemented. Additionally, one or more ultrasound elements are provided, such as on a clamp assembly or integral to a mapping electrode, to produce real time images of device components and surrounding structures.

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 invention relates to a bionic paper-cut-shaped epidermal electrode for dynamic electrocardiogram monitoring of a human body and a preparation method, the whole bionic paper-cut-shaped epidermal electrode is of a three-electrode single-lead multi-layer combined structure, and the bionic paper-cut-shaped epidermal electrode comprises a top polydimethylsiloxane thin film layer, an adhesion layer, a copper metal functional layer, a copper metal interconnection line and a bottom polyimide insulating layer which are arranged in sequence; the copper metal functional layer is formed by sequentially connecting four groups of subunits in series through four-side arc flexible hinges, and a deformable closed ring is formed in the copper metal functional layer; each group of subunits is composed of an N * N rigid dot array and telescopic flexible hinges connected between adjacent dots, and the telescopic flexible hinges adopt a snake belly imitating hexagonal pattern hinge form; the copper metal interconnection line is snake-shaped; the top polydimethylsiloxane thin film layer is tightly attached to and fixedly connected with one side of the adhesion layer, the copper metal functional layer is tightly attached to and fixedly connected with the other side of the adhesion layer, and the copper metal interconnection line is fixedly connected with a bonding pad of the copper metal functional layer in an adhesive mode and is tightly attached to and fixedly connected with the adhesion layer at the same time. And the bottom polyimide insulating layer is tightly attached and fixedly connected with the other side of the copper metal interconnection wire. According to the invention, a good use effect is achieved.

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 wearable intelligent monitoring device for old people, and relates to the technical field of health monitoring. Comprising a shell, the shell is provided with a protruding part and a mounting hole, and a magnet piece is fixedly connected into the mounting hole; the power piece is arranged in the mounting hole and is in contact with the magnet sheet, and the power piece is connected with a mounting shell in a sealing and sliding manner; the skin electrode is mounted in the mounting shell, and an optical sensor is mounted in the mounting shell; the connecting cylinder is fixedly connected to the mounting shell and is in limiting sealing sliding connection with the power part; and the coil is fixedly connected in the power piece. The coil and the power piece jointly form the electromagnet, the magnetic field repulsive to the magnetism of the magnet piece is generated, the skin electrode and the optical sensor are pushed by magnetic force to move and be attached to the skin, the situation that the skin electrode and the optical sensor cannot be completely attached to the skin during loose wearing is avoided, and the monitoring precision is improved.

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.

A temporary wearable device, in the form of a cuff with electronics and arrays of skin electrodes, attachable to a limb at specific locations above various joints. When activated, such as by wireless actuation, the device stimulates specific nerves of interest to temporarily block pain signals with quick response and in a reversible manner without any permanent nerve damage to the animal.

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 invention discloses an electrode material with both electronic conductivity and interface adhesion and a preparation method thereof, and relates to the field of electronic interfaces, a phase separation method is adopted to obtain the electrode material with both interface adhesion and interface conductivity at the same time, and the solubility difference of a conductive phase and an adhesion phase in a water phase and an organic phase is utilized to prepare the electrode material with both electronic conductivity and interface adhesion. According to the present invention, the conductive phase and the adhesion phase can be reasonably distributed according to the submicron scale after the water phase and the organic phase are subjected to the spontaneous phase separation process in the mixed phase of the water phase and the organic phase, and after the drying, the conductive phase and the adhesion phase can be reasonably distributed according to the submicron scale, such that the final material has the intrinsic electron conductivity of 10-120 S / cm, and has the excellent adhesion, such as the interface stripping energy with the skin of 200-600 J / m < 2 >. The material with both electron conduction and interface adhesion can be used as an interface material of a skin electrode, and is used for stabilizing and enhancing an electrophysiological monitoring signal, improving the electrical stimulation efficiency and the like.

The present invention relates to the technical field of epidermal electrodes, and specifically to a method for preparing an ultra-thin conformal epidermal electrode based on micro-nano metals; the method includes flattening the printed surface of water-release paper, preparing, printing and sintering micro-nano metal conductive ink, coating, leveling and curing of adhesive elastic polymers, and transferring the ultra-thin electrode from the water-soluble release layer to the skin. The preparation process of the ultra-thin conformal epidermal electrode disclosed in the present invention is simple, has a high success rate and good scalability, and the prepared epidermal electrode has good flexibility, stretchability, adhesion and long-term durability. The micro-nano metal conductive is patterned with high precision through a printing process, and the epidermal electrode can detect various biological signals with high precision and high stability, such as electrocardiogram, pulse wave, motion signal, etc.

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.

A system and method for diagnosing a sleep disorder in a subject are provided. In some aspects, the method includes sensing electrical signals corresponding to a skin nerve activity in the subject using a plurality of skin electrodes, and generating, using signal detector, signal data using the electrical signals. The method also includes assembling a time-series of data indicating the skin nerve activity using the signal data, and identifying a sleep disorder using the time-series of data. The method further includes generating a report indicative of the sleep disorder.

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.