61 results about "Bio impedance" patented technology

The invention relates to the technical field of bio-electricity signal acquisition, and particularly discloses a multi-channel bio-electricity signal acquisition system and a multi-channel bio-electricity signal acquisition method.The multi-channel bio-electricity signal acquisition system comprises a bio-electricity signal acquisition unit and a data processing unit; the data processing unit is used for compensating the original electrophysiological signals according to the real-time impedance value transmitted by the analog-to-digital conversion unit, performing primary screening on the original bio-electricity signals through the lowest quality threshold value, and performing primary compensation on the original bio-electricity signals according to the real-time impedance value, the standard impedance value and the breathing phase; according to the method, more flexible quality requirement setting is realized, the quality threshold setting difficulty is reduced, secondary screening is performed on the corrected bio-electricity signals through the highest quality threshold, and secondary compensation is performed on the corrected bio-electricity signals by adopting the LSTM network, so that the influence of bio-impedance fluctuation on the bio-electricity signals is reduced, and the quality of the bio-electricity signals is improved. And the acquisition quality and stability of the bio-electricity signals are improved.

This disclosure describes systems, apparatuses, and methods that utilize electric field sensing in an antenna topology. In some embodiments, the systems, apparatuses, and methods use a sensing modality, such as bio-impedance sensing, to detect and / or determine one or more user activities. The bio-impedance sensing can be used for held-object or touched-object recognition, gesture input recognition (e.g., recognition of one-handed gestures, two-handed gestures, etc.), user interface (UI) interaction by utilizing electrically passive components, and / or biometric identification and / or authentication.

The invention discloses an intelligent contrast agent exosmosis prevention monitoring device, and relates to the technical field of medical instruments, in particular to an intelligent contrast agent exosmosis prevention monitoring device which comprises a flexible substrate. A biological impedance sensor, a temperature sensor and a micro pressure sensor are integrated on the flexible substrate and used for monitoring tissue impedance, skin temperature and tissue pressure changes of an injection part in real time in a multi-parameter mode. The device is internally provided with a signal conditioning circuit for processing sensor signals, and data are sent to the high-pressure injector through the wireless communication module. According to the method, the risk of exosmosis of the contrast agent can be recognized in an early stage through multi-parameter fusion analysis, and the instruction is automatically sent to the high-pressure injector to adjust or stop injection when the risk is abnormal, so that closed-loop feedback from monitoring to control is realized, and the injection safety is effectively improved.

The invention relates to the technical field of medical rehabilitation treatment, and discloses a self-adaptive functional electrical stimulation system based on bimodal feedback and a control method. The system comprises a main control module, a stimulation output module, an electroneurographic signal detection module, a biological impedance test module and a safety isolation module. The main control module comprises a safety current determination unit, a stimulation control unit and a dynamic calibration unit which are respectively used for determining an individualized initial safety current based on neural action potential feedback, controlling treatment stimulation output and dynamically calibrating a safety current upper limit according to biological impedance change before and after stimulation. According to the invention, through bimodal feedback of electroneurographic signals and biological impedance, individualized calibration and real-time dynamic optimization of stimulation parameters are realized, and the problem that the treatment effect and safety are difficult to guarantee due to the fact that traditional functional electrical stimulation depends on experience setting and lacks physiological feedback is solved; and the accuracy, safety and adaptability of rehabilitation treatment are remarkably improved.

The invention discloses an electrosurgical radio frequency inverter based on model predictive control and a frequency conversion control method thereof, and the method comprises the steps: building a discrete output voltage prediction model based on a topological structure of the electrosurgical radio frequency inverter, and judging a switching frequency switching point and voltage peak output power through single sampling period iterative calculation. Constructing an output power prediction model; obtaining instantaneous prediction output power and theoretical reference output power obtained by real-time sampling and calculation when the output voltage is changed to a periodic peak value, and constructing a model prediction control evaluation function; according to the evaluation function, real-time voltage sampling and multi-frequency iteration prediction are combined with a set control target, the switching frequency of the radio frequency inverter is predicted and updated in real time, and constant-power frequency conversion control over the radio frequency inverter is achieved by continuously obtaining the control quantity at the next moment. The system can adapt to constant power output of a power supply under biological impedance change, can predict and control constant power output of an electrosurgical inverter in real time based on real-time updating of switching frequency, has good dynamic response performance, guarantees high efficiency and safety of clinical operations, and can be applied to various electrosurgical working platforms.

This invention discloses an intelligent psychological guidance system for harmonizing the Qi of the internal organs based on TCM emotional differentiation, belonging to the field of medical electronic equipment. The system includes a multi-node physiological signal acquisition module, a central control and data processing module, and an acoustic intervention output module. The system synchronously acquires multi-channel bioimpedance, volumetric pulse wave, and electrocardiogram signals, extracts pulse wave conduction time and local blood perfusion index, constructs Qi characteristic parameters, and maps them to generate emotional tags. The central control module locks the target resonance unlocking frequency according to the tags, modulates low-frequency vibrations with reference audio to synthesize a multimodal signal, and further combines physiological pulse transmission delay to perform phase compensation, controlling the precise output of the intervention signal during ventricular diastole. Steady-state determination and closed-loop tracking are performed based on the dynamic gradient of impedance variance. This invention achieves objective quantification of TCM differentiation and ensures high-precision physical alignment between intervention energy and the hemodynamic state of the internal organs.

Provided is a biological information providing apparatus comprising a potential signal measuring unit which measures a potential signal through a pair of electrodes in contact with a living body, a bioimpedance signal measuring unit which outputs a bioimpedance signal according to the bioimpedance, an adaptive filter having a variable coefficient filtering unit which generates a control signal, a biological information signal output unit which calculates a biological information signal, and a coefficient adjusting unit which adjusts the coefficient such that a signal correlated to the bioimpedance signal included in the biological information signal is reduced, and a filter control unit which controls the coefficient adjusting unit such that a convergence speed of the adaptive filter becomes faster when the potential signal or the bioimpedance signal satisfies a predetermined condition.

The invention provides a local muscle group fat rate detection method and system and a medium, and the method comprises the steps: enabling an electrode plate to be attached to a target local muscle group part of a human body, so as to form a local electrode region corresponding to the target local muscle group. And controlling a resistance detection module to inject a detection signal with preset frequency and current amplitude into the local electrode area, and synchronously acquiring biological impedance data of the local electrode area. And carrying out filtering processing and temperature compensation processing on the collected biological impedance data to obtain a processed target impedance value. And substituting the target impedance value and at least one of the height, the weight and the age of the user into a segmented body fat rate calculation model corresponding to the target local muscle group to obtain a body fat rate detection result of the target local muscle group. Through the structure, the body fat rate of the local muscle group is obtained.

The application discloses an iridium oxide modified fluorine-doped tin oxide electrode and a preparation method and application thereof. The electrode comprises a light-transmitting fluorine-doped tin oxide conductive glass substrate and an in-situ attached iridium oxide nano-modified layer. The preparation method comprises the following steps: preparation and aging of a precursor solution, alternating current electrochemical deposition, annealing and cleaning, and laser patterning treatment. The application further discloses a cell impedance sensor organ chip system comprising the electrode and application of the system in in-vitro drug screening. The application utilizes the low cost and light-transmitting property of the fluorine-doped tin oxide and the excellent charge injection capacity of the alternating current deposited iridium oxide nano layer to greatly reduce the interface impedance. The scheme meets the in-situ optical observation, realizes the high-sensitivity biological impedance monitoring comparable to gold electrodes, effectively solves the problems of high cost and complex process of the existing organ chip electrode, and is very suitable for popularization and application as a disposable high-throughput consumable.

A bioimpedance measuring device for measuring breast tissue is provided, comprising a control unit and at least one measurement applicator having at least four contact electrodes connected or connectable to the control unit via electrical wiring, wherein the control unit is configured to generate and output an alternating current signal to two of the at least four contact electrodes, causing the two contact electrodes to function as current electrodes, and further configured to receive an alternating voltage signal between two of the at least four contact electrodes, causing them to function as voltage electrodes, wherein the at least two contact electrodes that function as voltage electrodes do not simultaneously function as current electrodes.

A personal vaping device (“PVD”) for age authenticated vaping is configured to read the thumbprint of an active user of the vaping device and, essentially simultaneously, perform a bioimpedance analysis (“BIA”) to measure a bioimpedance signature of the active user. The combination of the user's thumbprint with the bioimpedance signature defines a unique identity data combination for the user that can be compared to stored identity data combinations of authorized users. If the identity data combination of the active user matches, within a statistical confidence level, a stored identity data combination of an authorized user, the vaping device “unlocks” its heating chamber such that power is supplied to the coil / heating element for vaporizing e-juice.

The application discloses a kind of cosmetic instrument control method and system, specifically related to the field of cosmetic instrument intelligent equipment, including the following steps: before starting microneedle driving mechanism, whether the treatment head is formed effective electrical contact with skin by contact detection module is judged;After confirming that there is effective electrical contact, voltage signal and current signal in microneedle loop are collected in real time, and the biological impedance value of current skin is calculated according to the voltage signal and the current signal;The attitude angle of the cosmetic instrument relative to the surface of skin is obtained by built-in inertial sensor;The application cooperates with the main controller by contact detection module, voltage / current sampling circuit, inertial sensor and device attitude angle, and biological impedance value, and three are used as joint determination condition: only when contact is effective, impedance is in preset safety interval and attitude angle is less than threshold value, maintain electric pulse output;Any condition fails, and output is terminated and graded response is executed.

The invention provides a blood pressure monitoring method and system. The method comprises the following steps: acquiring an original biological impedance signal of a user; performing scene recognition according to the original biological impedance signal; building a dosage suggestion model according to the scene recognition result to output dosage suggestions in the morning of the next day; estimating a blood pressure value according to the original bioimpedance signal; and performing blood pressure early warning according to the blood pressure value and the scene recognition result. The next day morning administration dosage suggestion and the blood pressure early warning can be combined with the current scene, the blood pressure feature analysis accuracy can be improved, the more accurate administration dosage suggestion can be provided, and model errors and early warning misinformation caused by scene-free distinguishing are avoided.

The invention provides a dynamic pulse magnetic field periorbital positioning method for simulating traditional Chinese medicine massage manipulation, which comprises the following steps: embedding a plurality of micro electromagnetic coils in an eyeshade, and performing spatial arrangement according to periorbital acupoint dissection positioning; multi-coil independent dynamic control is realized through an MCU and a driving circuit, and self-adaptive optimization is performed on magnetic field excitation parameters in combination with bioimpedance data acquired in real time and a machine learning algorithm; the multi-coil collaborative magnetic field focusing, intelligent regulation and control based on biological impedance feedback and a personalized parameter database are adopted to realize dynamic rotary magnetic field stimulation on a target acupuncture point, so that the precision and pertinence of magnetic field distribution are improved, meanwhile, the stimulation safety, comfort and personalized adaptive capacity are enhanced, and the simulated kneading curative effect is remarkably optimized.

1. The name of the design product: biological impedance meridian detector (trolley type). 2. The use of the design product: equipment for human meridian detection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

Assistance device for improved electrode placement This invention relates to an assistance device (eg., user interface) and a method of assisting in placement of a pacing electrode in a target tissue area of a patient based on sensed electric signals, wherein a set of electrocardiogram (ECG) and / or electrogram (EGM) and / or accelerometer and / or bio-impedance (BioZ) signals is acquired in a concurrent manner, a real-time signal processing chain is applied to the acquired signals in order to maximize the signal to noise ratio, detect and extract individual beats (either spontaneous or stimulated), extract meaningful features from these individual beats and provide a quantitative, detailed morphological analysis, and then the evolution of these markers is displayed in real-time by means of "shadow plots" and accompanying extracted features.

The invention discloses a chicken body fat rate phenotype determination system and a chicken selection method. The chicken body fat rate phenotype determination system comprises an eight-electrode system, a multi-channel signal receiving and transmitting module, a processor module and a power supply module, the eight-electrode system is used for sending excitation current and receiving potential difference signals, and a local closed-loop measurement loop can be formed on the same limb; the multi-channel signal receiving and transmitting module is used for controlling excitation and measurement among the electrode groups and realizing biological impedance data acquisition in multiple directions; the processor module is used for constructing data models of the upper limbs, the trunk and the lower limbs of chicken body fat distribution according to the multi-channel impedance data; the power supply module is connected with the processor module and the eight-electrode system and provides power for the system. The method adopts the bioelectrical impedance value to measure and detect the body fat rate of the live chicken, and is high in detection precision, convenient to operate, high in adaptability and convenient to popularize and apply in the field of poultry breeding.

A series of electrodes and a machine learning system are configured to detect changes in biological tissue over time. Specifically, the system may include a wearable device configured to detect changes in tissue response to an electrical signal that may be indicative of cancerous tissue, e.g., breast cancer and / or other types of cancer. The system optionally combines measurements from bioimpedance sensors, miniaturized ultrasound arrays, temperature sensors, and / or printed microwave planar antenna to detect changes in breast tissue composition and vascularity. The system may also be used to detect other physiological states such as menstrual cycles and / or various conditions related to hydration or breathing patterns.

An electronic device includes: a housing; an optical sensor disposed on the housing and including a light receiving unit and a light emitting unit configured to radiate light to the light receiving unit through an optical path; a bio-impedance detection sensor disposed adjacent to the optical sensor, and including a plurality of electrodes configured to transmit and receive a current through a current path; and one or more processor disposed in the housing. At least a portion of the optical path overlaps at least a portion of the current path. The one or more processor is configured to determine a biometric component based on an intensity of light detected by the optical sensor and a magnitude of impedance sensed by the bio-impedance detection sensor.

This invention discloses an electromagnetic breast milk flow meter with bioimpedance correction and its measurement method, belonging to the field of breastfeeding monitoring technology. It includes a wearable fixing module, a sealing adapter module, and a core flow detection module. The core flow detection module integrates a miniature electromagnetic flow sensor, a bioimpedance electrode, and a turbine calibration component within its metering sleeve, forming a multimodal sensing system. A spiral guide channel is provided within the fluid channel, which, in conjunction with an arc-shaped probe and flush installation, guides the milk through in a laminar flow state. This invention also discloses a measurement method that uses a 50kHz-100kHz signal emitted by the bioimpedance electrode to identify air bubbles and fat particles, corrects the electromagnetic flow data, and uses a turbine encoder for dynamic verification. This achieves high-precision multi-parameter fusion measurement of breast milk flow and features adaptive wearability, quick disassembly and cleaning, and over-range audible and visual alarm protection.

A biological information detection device that includes a main body including an arm placement surface on which a forearm or a wrist can be placed, and a finger support capable of supporting a finger of the user in a state in which the forearm or the wrist is placed on the arm placement surface, in which the main body includes a pair of arm electrodes exposed on the arm placement surface and capable of detecting the biological impedance from the forearm or the wrist, and in a top view of the biological information detection device as seen from a side of the arm placement surface, the finger support is attached to the main body so as to be movable in an approaching direction approaching the main body and a separating direction separating from the main body opposite to the approaching direction.

The application discloses a kind of control device and system of radio frequency microneedle interval needle body movement synchronous energy output, device includes: main controller according to preset path control XY axis horizontal movement mechanism and move microneedle array to target target point coordinate, after confirming in place, lock XY axis horizontal movement mechanism;Control Z axis lifting mechanism drives microneedle array and vertically pierces into skin to preset depth;Before radio frequency energy output, real-time detection loop biological impedance value carries out handshake verification, only when biological impedance value is in effective coupling interval, trigger radio frequency generator and output energy;During the whole energy output process, XY axis horizontal movement mechanism is kept in locked state;After energy output ends, control Z axis lifting mechanism vertically withdraws, and after microneedle array is separated from skin, release lock and execute next position movement.Effective solution skin mechanical damage problem, and the risk of empty firing or burn due to lack of contact detection, significantly improve the precision, uniformity and safety of treatment.

The invention relates to the technical field of physical therapy, in particular to an acupoint massage scraping therapy plate which comprises a plate body and an air pump. A positioning assembly and a vibration motor are arranged in the plate body; the positioning assembly comprises a processor and a positioner; the plate body comprises a scanning side, a massage surface and a display surface; the scanning side is provided with a biological impedance sensor for positioning acupuncture points, and the positioning device is used for positioning the acupuncture points to obtain acupuncture point positioning information; massage bulges and an air suction port are arranged on the massage surface; the external interface is communicated with an air pump; when the positions of the massage bulges correspond to the acupuncture point positioning information, massage is performed; the air pump works to generate negative pressure to adsorb the massage surface on the surface of a human body, and the vibration motor drives the massage bulges to massage acupuncture points; the biological impedance sensor is adopted to scan the surface of the human body, and the normal wiping step and the scanning step are fused, so that the efficiency is improved; the whole massage surface is adsorbed on the surface of a human body through the air suction port, the vibration motor is prevented from interfering with the hands of a massagist, and physical strength is saved.

The invention relates to the technical field of medical equipment, and particularly discloses a frequency control system and method of a multi-frequency electric field tumor suppression device. According to the system, an alternating electric field with a specific frequency band is generated through a multi-frequency signal generator and acts on a tumor area through an electrode array; the core is that a main controller is adopted to execute a closed-loop control strategy: a multi-frequency electric field is output according to a weighted cycle time sequence, the electrical impedance change of tumor tissues is monitored in real time through a biological impedance sensing module, and the output time weight of each frequency is dynamically adjusted according to the electrical impedance change. According to the method, the limitation of single-frequency treatment is effectively overcome, the sensitive frequencies of different tumor cells can be adaptively matched, the broad spectrum and accuracy of treatment are remarkably improved, meanwhile, the generation of tolerance is delayed through a real-time feedback mechanism, and the optimized tumor inhibition effect is achieved on the premise that the treatment safety is guaranteed.

The invention discloses a control method and system for synchronous energy output of intermittent needle body movement of a radio frequency microneedle, and the method comprises the steps: a main controller controls an XY-axis horizontal movement mechanism to move a microneedle array to a target point coordinate according to a preset path, and locks the XY-axis horizontal movement mechanism after confirming that the microneedle array is in place; controlling the Z-axis lifting mechanism to drive the microneedle array to vertically pierce into the skin to a preset depth; before radio frequency energy is output, a biological impedance value of a loop is detected in real time for handshake verification, and a radio frequency generator is triggered to output energy only when the biological impedance value is in an effective coupling interval; in the whole energy output process, the X-axis and Y-axis horizontal moving mechanism is kept in a locked state; and after energy output is finished, the Z-axis lifting mechanism is controlled to vertically withdraw, and after the microneedle array is separated from the skin, locking is relieved, and next-position movement is executed. The problem of mechanical injury of the skin is solved, the risk of empty hitting or burning caused by lack of contact detection is avoided, and the accuracy, uniformity and safety of treatment are remarkably improved.

The invention relates to the technical field of medical instruments, and provides an intelligent hand rehabilitation orthosis and a control method thereof. The driving mechanism comprises an arm ring and a driving part; the monitoring mechanism comprises an inertial sensor, a myoelectricity sensor and a biological impedance detection electrode; a training model for rehabilitation training is pre-stored in the control mechanism, and the control mechanism is electrically connected with the driving component, the inertial sensor, the myoelectricity sensor and the biological impedance detection electrode. According to the intelligent hand rehabilitation orthosis, the inertial sensor, the myoelectricity sensor and the biological impedance detection electrode are integrated, and synchronous quantitative monitoring of the movement function, neuromuscular activation and the local tissue metabolism environment is achieved in a single orthosis. Based on a preset machine learning fusion model, multi-source sensing data are fused to generate comprehensive physiological status indexes, sub-clinical abnormal modes such as myoelectricity median frequency reduction and impedance abnormal fluctuation can be actively recognized, and early warning is conducted before muscle functional fatigue or spasm attack.

The invention relates to the technical field of environment control, in particular to a mouse experimental environment intelligent control and optimization method which comprises the following steps: monitoring the body surface conductivity mutation amount in real time through a biological impedance sensor of an experimental operation table, and reading the environmental parameters of an operation area at the same time; according to the body surface conductivity break variable and the operation area environment parameters, reversely deducing equivalent effect excitation environment loads, and generating an in-cage environment pre-compensation instruction; before the mice are put back to the rearing cage, an in-cage execution mechanism is driven according to the in-cage environment pre-compensation instruction, a mirror image environment consistent with the environment parameter gradient of an operation area is formed in a target area in the cage, and the maintaining time is longer than the stress recovery period of the mice; according to the invention, the coupling between environmental stimulation and biological response is realized, the experimental consistency, animal welfare level and system energy efficiency are effectively improved, and the technical bottlenecks of general space, response lag and intervention stiffness of the existing experimental environment regulation and control means are broken through.

The application relates to the technical field of big data processing, and discloses a knowledge graph building method based on chronic disease management. The present application uses deduction logic based on biological steady-state game, introduces thermodynamic dissipation and entropy increase constraint, accurately quantifies the irreversible loss of living beings in the disease course, overcomes the defect that the existing algorithm cannot simulate physiological function decline, at the same time, the present application constructs a physical filter based on the principle of biological impedance mismatch, uses mass transport limitation to eliminate sensor high-frequency artifact noise, significantly reduces the false positive rate while ensuring the real lesion recall rate, further, the present application converts the medical contraindication rule into a rigid topological potential constraint through contact mechanics and gibbs free energy functional, forcibly corrects the data violating common sense, ensures the high unity of the output graph in the physical observation reality and the medical logic self-consistency, and greatly improves the clinical explainability and decision safety of the auxiliary diagnosis and treatment system.

The utility model discloses a kind of fish biological impedance detection devices based on multi-frequency four electrodes, belong to aquatic product detection technical field.The device integrated detection block, handle and display block, inside is equipped with central processing unit and electronic system module.Through the four-electrode contact system of detection block bottom to fish body and detect voltage signal, combine the multi-frequency signal generation, noise filtering and impedance value conversion function of electronic system module, realize high-precision biological impedance measurement.Central processing unit passes through intelligent algorithm analysis impedance data, real-time output fish freshness value, fat content and freeze-thaw state etc. Index, result is visualized by display unit and presents.This device integrates portable design, multi-frequency four-electrode anti-interference technology and cloud data matching capability, suitable for aquatic processing and circulation link on-site rapid detection.

A breast milk flow monitoring system in the form of a milk flow monitoring sensor is described and includes an array of electrodes and a controller. The electrodes include electrically conductive surfaces that are arranged to contact a skin surface of a breast. The controller generates a first excitation signal that is communicated via the first electrode to a first location on the breast, and generates a second excitation signal that is communicated via the first electrode to the first location on the breast. The controller receives a first current response signal and a second current response signal. A bio-impedance spectroscopic analysis of the first current response signal and the second current response signal is executed, wherein the bio-impedance spectroscopic analysis is calibrated for breast milk flow. A breast milk flow parameter is determined based upon the bio-impedance spectroscopic analysis.