225 results about "Living body" patented technology

This temperature-indicating label is provided with: a base material; an adhesive layer to be affixed to the surface of a living body; and a temperature-indicating ink layer that is positioned between the base material and the adhesive layer, and that is configured so as to change color in accordance with the temperature of the temperature-indicating ink layer. The stress at 20% stretching is 0.2 N / mm2 to 10.0 N / mm2. The thickness of the temperature-indicating ink layer is 1-9 µm. In a state in which the adhesive layer is affixed to a white plate, the color difference ΔE* ab in the L*a*b* color space between a first state in which the temperature-indicating ink layer exhibits a first color and a second state in which the temperature-indicating ink layer exhibits a second color different from the first color is greater than 10. The color change between the first color and the second color is visible via the base material.

The application discloses a kind of millimeter wave radar living body identification methods based on neural network, comprising: obtaining package original ADC data, signal pre-processing is carried out, and three-dimensional radar point cloud is generated;Three-dimensional radar point cloud is respectively subjected to space geometry feature enhancement and dynamics mode feature enhancement, and enhanced feature is obtained;Three-dimensional radar point cloud and enhanced feature are parallelly input into multimodal heterogeneous feature decoupling network, and the deep physical property feature of target is respectively decoupled and extracted;Cross-modal interaction and adaptive weighted fusion are carried out to the deep physical property feature, and obtain fusion feature vector;Fusion feature vector is input into classifier, and the discrimination result whether the target in package is living body is output.The deep physical property feature of target is extracted by the multimodal heterogeneous feature decoupling network of the application, and adaptive depth fusion is carried out using cross-modal attention mechanism, so as to effectively suppress non-living interference in complex dynamic environment, and the accuracy of living body detection is significantly improved.

This invention provides a negative pressure isolation live microscope experimental box. The experimental box, through its closed negative pressure design, ensures the biosafety of experiments with pathogens of BSL-2 level and above, meeting the requirements of the safety committee review. At the same time, its innovative box-type integrated window structure eliminates the vibration torque caused by animal movement in traditional suspended windows from a mechanical design perspective, providing unparalleled stability for high-precision imaging. Ultimately, it makes it possible to safely and stably conduct live microscopic studies of highly pathogenic infection models in a conventional laboratory.

This invention discloses a numerical characterization method for gas explosion damage based on in vivo biological damage correction, belonging to the interdisciplinary field of explosion mechanics and biomedicine. The method first acquires multi-dimensional damage data of organisms in gas explosion experiments, constructs a fluid-structure interaction numerical model of the gas explosion flow field in the tunnel and a biomimetic finite element model of the organism, solves the model using an improved arbitrary Lagrange-Euler algorithm, and extracts dynamic biomechanical response parameters. A quantitative correlation between mechanical response and damage level is established through a multi-objective collaborative correction model and an ordered Probit correction model. After iterative optimization, a high-confidence gas explosion-induced biological damage prediction model is output. This invention forms a complete closed loop of simulation-experiment-correction, which can accurately characterize gas explosion biological damage, providing technical support for research on explosion injury mechanisms, assessment of protective effectiveness, and clinical diagnosis and treatment.

The present application relates to the technical field of image detection, and can be applied to the business system platform of financial technology, medical health and the like, and discloses a non-contact living body feature data analysis method, device, equipment and medium, comprising: non-contact collection of a three-dimensional space scene and a reference age in a space within a radius range around a target living body; extraction of a living body contour area of the target living body from the three-dimensional space scene, determination of a mass measurement reference value of the target living body according to the area size of the living body contour area; generation of a measurement point position guide mark of the target living body according to the mass measurement reference value; calculation of living body length data and living body height data of the target living body by using the measurement point position guide mark, identification of living body breed information of the target living body by using a living body breed database; and calculation of a living body feature data analysis result of the target living body according to the reference age, the living body length data, the living body height data and the living body breed information. The present application can improve the accuracy of non-contact living body feature data analysis.

The application provides a training method, system and device of a prosthesis attack detection model and a storage medium, comprising: collecting infrared images of real faces, generating a positive sample training set after labeling the infrared images of the real faces; collecting infrared images of attack photos, generating a negative sample training set after labeling the infrared images of the attack photos; and training a pre-set convolutional neural network model to generate a prosthesis attack detection model according to the negative sample training set and the positive sample training set. In the application, the infrared images of target faces are subjected to living body detection through the prosthesis attack detection model, the prosthesis attack detection model comprises an input layer, a plurality of convolution processing modules, a maximum pooling layer, a first 2D convolution layer and an output layer, the complexity of the model is significantly reduced, and the application of the model is facilitated.

A treatment system includes a treatment tool, an imaging apparatus, and a control device. The treatment tool is configured to perform treatment on a living tissue by applying treatment energy from an end effector to the living tissue based on supplied electric power. The imaging apparatus captures an image of the living tissue in a state in which the treatment energy is applied from the end effector to the living tissue. The control device includes a processor to control the imaging apparatus by acquiring the captured image, determining whether an abnormality has occurred in the end effector based on the acquired captured image, and executing an instruction to stop supply of the electric power to the treatment tool when determining that the abnormality has occurred in the end effector.

A display processing unit causes a display device to display an endoscopic image of a living tissue in a somatic cavity captured by an endoscope. An operation reception unit receives a user operation that is performed so as to set an area of interest in the endoscopic image. An area-of-interest setting unit sets the area of interest in the endoscopic image based on the user operation. A three-dimensional information acquisition unit acquires three-dimensional shape information of the living tissue captured by the endoscope. A virtual surface derivation unit derives three-dimensional shape information of a virtual surface in the area of interest from three-dimensional shape information of an area different from the area of interest. A size information identification unit identifies information concerning a size of the virtual surface from the three-dimensional shape information of the virtual surface.

There is provided a human falling detection system including an image sensor, a thermal sensor and a microphone. The image sensor captures an image frame that is used to identify a face and a height-width ratio of a human image. The thermal sensor is used as a filter for filtering out a living body and captures a thermal image that is used to identify a height-width ratio of a human thermal image. The microphone records a time stamp of an abrupt sound appearing.

A vessel for transporting a living organ includes a container having an open top end and a closed bottom end, and a lid configured to selectively cover the open top end of the container and seal an inner chamber. The container includes a rigid outer housing, a rigid inner housing positioned within the rigid outer housing, and an insulating layer. The rigid inner housing defines the inner chamber, which is configured to hold a living organ. The rigid inner housing and the rigid outer housing define a closed cavity therebetween, in which the insulating layer is positioned.

This invention discloses a method for separating vital signs based on millimeter-wave radar signal enhancement, comprising the following steps: acquiring the original radar signal of the target being monitored by millimeter-wave radar and preprocessing it; extracting six types of features from the preprocessed signal and classifying the preprocessed signal into four scene categories based on the six types of features; according to the classified scene categories, calling the corresponding signal processing model to enhance or reconstruct the preprocessed signal to obtain the enhanced radar signal; performing signal quality assessment on the enhanced radar signal, and inputting the enhanced signal that meets the quality assessment requirements into a variational mode decomposition module to separate the respiratory and heartbeat signals of the target being monitored. This invention improves the accuracy of vital sign detection in complex environments by classifying millimeter-wave radar vital sign signals in complex scenes, adaptively calling the model to enhance the signal, and using variational mode decomposition to separate respiration and heartbeat.

A catheter assembly includes: an inner needle configured to puncture a living body; a catheter configured to allow the inner needle to be inserted therethrough; a catheter hub located at a proximal end of the catheter; a valve body located in an internal space of the catheter hub; an opening member configured to be located in the catheter hub on a proximal side of the valve body, the opening member including: a cylindrical barrel portion, a neck portion extending from a distal end of the barrel portion, wherein a diameter of the neck portion is smaller than a diameter of the cylindrical barrel portion, and a foot portion extending proximally from the barrel portion. The opening member is configured to move in a distal direction through the internal space of the catheter hub to open the valve body by the neck portion.

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.

Provided is a protein detection method for detecting a protein contained in a biological tissue collected from a living body. The protein detection method comprises: a step for preparing a specimen sample by adding, to a sample containing a protein collected from a living body, antibody-carrying magnetic particles that bind to the protein, and mixing the antibody-carrying magnetic particles and the sample; a measurement step for measuring a magnetic signal corresponding to a magnetic field generated by the specimen sample by applying, to the specimen sample, a switching magnetic field in which the magnetic field direction reverses; and a detection step for detecting the protein contained in the specimen sample on the basis of the magnetic signal.

[Problem to be Solved]Provided is a delivery carrier into the cell having high antioxidant activity, intracellular absorbability, intracellular disintegration property, stability and safety, which have high delivery property of the active ingredient to cell and living tissues.[Solution]The delivery carrier into cells includes a vitamin derivative with co-activation of both autophagy-related genes and protease synthesis genes, a polymer molecule containing stimulatory reactivity, an emulsion stabilizer, an active ingredient, and a lipid, thereby providing a delivery carrier into cells with high delivery properties of the active ingredient to cells and living tissues.

This invention belongs to the field of biosensing technology, specifically relating to a modified carbon fiber electrode for detecting dopamine, its preparation method, and its application. The modified carbon fiber electrode comprises a carbon fiber electrode onto which gold-platinum bimetallic nanoparticles and polydopamine are sequentially modified. The preparation method specifically includes: firstly, modifying the surface of activated carbon fiber filaments with chloroauric acid and sodium citrate to obtain Au@CF; then, modifying the Au@CF surface with ascorbic acid and chloroplatinic acid to obtain platinum nanoparticles, obtaining Au / Pt@CF; finally, immersing the Au / Pt@CF in a dopamine solution to coat the Au / Pt@CF surface with polydopamine, obtaining PDA@Au / Pt@CF. This electrode has advantages such as high sensitivity, low detection limit, strong anti-interference ability, good biocompatibility, and high mechanical stability, making it suitable for dynamic monitoring of dopamine in the living brain.

This cell-based formulation contains SSEA-3-positive pluripotent stem cells derived from mesenchymal tissue of a living body or derived from cultured mesenchymal cells. This cell-based formulation is characterized in that the formulation is for administration to address diseases and / or post-acute sequelae caused by SARS-CoV-2 infection. The present invention makes it possible to provide a cell-based formulation that contains pluripotent stem cells and is used for treating and / or preventing SARS-CoV-2 infection-caused diseases such as pneumonia and pulmonary fibrosis and SARS-CoV-2 infection-caused post-acute sequelae such as olfactory dysfunctions.

This application provides a living chamber for optical imaging. The living chamber includes a receiving chamber and a temperature-controlled chamber surrounding the receiving chamber. The temperature-controlled chamber has an inlet and an outlet. Inside the temperature-controlled chamber is a ring-shaped double-layer flow channel, comprising an inner flow channel encircling the outer wall of the receiving chamber and an outer flow channel coaxially surrounding the inner flow channel. Both the inlet and outlet are connected to the ring-shaped double-layer flow channel. The temperature-controlled working fluid flows into either the inner or outer flow channel of the ring-shaped double-layer flow channel through the inlet, completes full-area circulation around the outer wall of the receiving chamber, and then flows out through the outlet via the other flow channel to regulate the temperature of the liquid inside the receiving chamber. This ensures that the liquid temperature inside the receiving chamber is uniform and stable, preventing any negative impact on optical imaging.

In one embodiment, a catheter apparatus is configured to be inserted into a body part of a living subject, and including an elongated deflectable element including a distal end, an expandable basket assembly disposed at the distal end and comprising a plurality of splines and a plurality of electrodes disposed on the splines, an irrigation channel disposed in the elongated deflectable element, and an inflatable balloon disposed in the expandable basket assembly and including a plurality of irrigation holes in fluid connection with the irrigation channel.

The present invention relates to a measuring device for bio-diffused substances, the measuring device comprising a measuring chamber, a sensor, and an evaluation device, wherein the measuring chamber has at least one top opening for discharge and a bottom opening for direct or indirect contact with a living body, the area of ​​the top opening being smaller than that of the bottom opening, the measuring chamber further comprising at least one third opening for forming a bottom-open structure in the measuring chamber during measurement, the sensor located in the peripheral wall of the measuring chamber and used to measure the concentration of a substance diffused from a living body, and the evaluation device being coupled to the sensor.

The application relates to the field of medical devices and provides a biopsy device suitable for an interventional operating room, which comprises a shell, a first cavity and a second cavity are arranged in the shell, a side wall of the shell is communicated with a side wall of the second cavity through a second channel, the side wall of the shell is communicated with the side wall of the second cavity through two or more first channels, an adsorption mechanism is arranged in the first cavity, a transmission mechanism is arranged in the second cavity, a temporary storage mechanism is arranged in the first channel, and a cutting mechanism is arranged on the shell. The application can conveniently sample multiple biopsy tissues of different parts of the human body, does not need to use a cutting knife, improves the operation efficiency and convenience, temporarily stores different biopsy tissues, prevents the biopsy tissues from falling, and prevents the biopsy tissues from being polluted.

The application discloses a molecular marker, a kit and a genotype detection method for predicting high content of highly unsaturated fatty acids in mirror carp muscle, relates to the technical field of biomolecular detection, and specifically relates to a molecular marker, a kit and a genotype detection method for predicting high content of highly unsaturated fatty acids in mirror carp muscle. The molecular marker for predicting high content of highly unsaturated fatty acids in mirror carp muscle is shown as SEQ ID NO. 1. The primer pair for predicting high content of highly unsaturated fatty acids in mirror carp muscle is hufaf1 and hufar1. The genotype detection method comprises the following steps: one, extracting DNA; two, PCR amplification; and three, Sanger sequencing, and the mirror carp with a C single peak at the 75th bp is selected. The application can identify individuals with potential high content of highly unsaturated fatty acids in muscle based on living body non-damage and rapidness through the above-mentioned molecular marker, the kit and the genotype detection method, so that precise and efficient breeding of the high content of highly unsaturated fatty acids in mirror carp is realized.

The present application relates to the technical field of power operation safety, and discloses a method, system, device and medium for measuring the distance of a live body in a near-live operation scene, which comprises: collecting RGB image data and depth data in a target area in a near-live operation site; based on a pre-constructed multi-modal fusion perception network, combining the RGB image data and the depth data, locating the three-dimensional spatial positions of all dynamic targets in the target area, and generating semantic segmentation masks of all live bodies; determining the spatial boundary range of the live bodies according to the semantic segmentation masks of the live bodies; mapping the three-dimensional spatial positions of all dynamic targets and the spatial boundary range of all live bodies in the same world coordinate system, and determining the minimum Euclidean distance between each dynamic target and all live bodies in the same world coordinate system, thereby improving the accuracy and work efficiency of distance measurement.

The present invention relates to systems, methods and algorithms for determination of heart pump function and their use in livings subject are described.The invention further relates to complementary parts of such systems that work best in combination.Medical catheters, sheaths and shafts are disclosed that carry an arrangement of integrated digital sensor systems-on-chip (SoC) in the portion thereof residing inside the body. These devices combine at their portion that resides inside the body, the complete chain of signal transduction, signal analog-to-digital conversion and digital signal transmission, and allow to acquire single and multiple physical entities in a single setup. In specific instances the devices integrate wireless data transfer functionality, and in specific instances they integrate wireless energy harvesting for battery-free functionality.The present invention further describes complementary monitor systems that are suited for reception, processing and analysis of data acquired by such catheters / sheaths / shafts to yield a robust assessment of cardiac performance.Moreover, the present invention relates to innovations which render such systems applicable to patients with and without cardiac assist devices.

The application discloses a kind of multicomponent plankton algae concentration measurement method based on fluorescence spectrum stratification partitioning.The application belongs to the field of marine aquatic ecological environment monitoring technology.The algorithm will unknown to be analyzed mixed three-dimensional fluorescence spectrum according to the following stratification partitioning analysis idea to be analyzed.First layer: full spectrum is involved in analysis, and the purpose is to analyze cyanophyta concentration and cryptophyta concentration, and obtain the difference spectrum in full spectrum region.Second layer: partitioning analysis, take the region containing effective spectral feature to participate in analysis, and the purpose is to analyze chlorophyll a concentration of green algae, diatom, dinoflagellate and yellow algae.The algorithm is significantly superior to common analysis algorithm in reducing misidentification, especially in processing such as diatom, dinoflagellate and yellow algae with high similarity living body fluorescence spectrum.

A flexible endoscope includes a flexible shaft and an ultrasound transducer. The shaft extends from a proximal end connected to a handle to a distal portion configured to be inserted into a living body to a site adjacent to target tissue to be treated. The shaft includes adjacent to a distal end thereof a port from which a tissue treatment device may be extended out of the shaft along a path. The transducer is within a housing coupled to a portion of the shaft extending distally of the port. The transducer is aimed so that the path passes through a field of view provided by the transducer to a user of the device. The transducer is movable relative to the port to broaden the field of view.

A biological signal acquisition device includes: an electrode and an electrode configured to be in contact with a human body and configured to acquire a biological signal emitted by the human body when the electrodes are in contact with the human body; and an elastic body configured to press the electrode against the human body when the electrode is in contact with the human body. The biological signal acquisition device further includes an elastic body that presses the electrode against the human body when the electrode is in contact with the living body. The biological signal acquisition device further includes a circuit board 16 that acquires a biological signal using the electrode and the electrode.