40 results about "Physiological movement" patented technology

The invention discloses a non-contact sleep staging identification and structural analysis method and system, and belongs to the field of sleep monitoring. The method comprises the steps that thoracic physiological movement signals to be staging are obtained, and the thoracic physiological movement signals to be staging are a plurality of sleep segments and comprise thoracic respiratory movement signals and heartbeat movement signals of a human body; and inputting the thoracic physiological movement signal to be staging into a pre-trained neural network model to obtain a sleep staging recognition and structure analysis result output by the neural network model. The method has an accurate sleep structure parameter estimation capability, and is of great significance to sleep diagnosis; and meanwhile, the system is low in cost and convenient to use, does not generate any constraint and sleep influence on the user, can be applied to daily intelligent sleep monitoring, and has home health monitoring application value.

A multi-axial spine testing system includes a physiological motion unit (PMU); a uni-axial test frame having an input; and a fixture configured to be attached to the test frame and facilitates a plurality of primary motions of one or more of the PMU and the fixture. The plurality of primary motions includes a linear motion of the input and a rotational movement of an output. The fixture has an upper assembly directly or indirectly coupled to the input. The upper assembly transfers the linear motion (Tz) of the actuator to the rotational movement (Rx) of the output. The upper assembly and lower assembly apply a bending moment (MX) and an axial compression (Fz) to the PMU. An external transducer collects data related to or generated by at least the plurality of primary motions. The fixture simultaneously provides the bending motion and axial compression to the PMU.

The present invention discloses a non-contact real-time physiological sign monitoring system based on millimeter wave radar, comprising a millimeter wave radar and a plurality of modules for processing radar signals, wherein the millimeter wave radar is configured to continuously transmit electromagnetic wave signals, and simultaneously receive echo signals and perform frequency mixing processing on the echo signals to obtain intermediate frequency signals, and the intermediate frequency signals are processed to obtain a radar four-dimensional data matrix; the human body's physiological signs are monitored by analyzing the human body's chest micro-motion information in the signals through each module; a constant false alarm rate detection algorithm is used to process the target echo and filter out invalid signals; an adaptive distance unit selection algorithm based on the short-term stability of a respiratory signal is used to accurately capture the radar echo reflecting the human body's physiological movement; a variational mode decomposition algorithm is used to process the mixed human body physiological sign signal obtained by the processing, and a gray wolf optimization algorithm is used to optimize the key parameters in the variational mode decomposition to obtain a more accurate estimation of physiological sign parameters.

The invention discloses an intraoperative ultrasonic registration method and system for direct positioning of a bone operation, belongs to the technical field of surgical navigation, and aims to solve the problem of displacement data deviation caused by relative displacement of skin and bones due to physiological movement. Comprising the following steps: acquiring preoperative three-dimensional image data corresponding to an operative region; acquiring a plurality of pieces of three-dimensional ultrasonic image data corresponding to the surgical area; acquiring position data corresponding to the three-dimensional ultrasonic image data; according to the multiple pieces of three-dimensional ultrasonic image data, the position data corresponding to the three-dimensional ultrasonic image data and the preoperative three-dimensional image data, a homogeneous transformation matrix is obtained; acquiring real-time ultrasonic image data acquired by an ultrasonic probe fixedly attached to the surgical area; acquiring real-time position data of an ultrasonic probe for acquiring the real-time ultrasonic image data; according to the homogeneous transformation matrix and the real-time position data, the real-time ultrasonic image data and the preoperative three-dimensional image data are registered, and in-vivo skeleton structure displacement data are estimated.

The invention relates to a self-healing bionic intervertebral disc capable of improving service stability and a nucleus pulposus preparation method of the self-healing bionic intervertebral disc, and belongs to the field of bionic implant prostheses. The self-healing bionic intervertebral disc capable of improving the service stability is composed of an upper end plate, a bionic fibrous ring layer, a lower end plate and a bionic nucleus pulposus, the bionic nucleus pulposus adopts dynamic cross-linked hydrogel to simulate the viscoelasticity and moisture regulation function of a natural nucleus pulposus, and the buffering and self-healing characteristics of the bionic intervertebral disc are achieved; the bionic fiber ring layer achieves gradient mechanical properties through directionally-arranged composite materials, and three-dimensional physiological movement of the artificial intervertebral disc close to the lumbar vertebra of a human body is achieved. The bionic intervertebral disc provided by the invention is matched with viscoelasticity of a natural intervertebral disc, recovers natural matching with three-dimensional physiological movement of a human spine, can buffer dynamic load and maintain intervertebral height, can perform micro-injury self-repair through dynamic crosslinking of chemical bonds in bionic nucleus pulposus, and has a good application prospect. And the kinematic mechanical stability of long-term service in a human body is realized.

The invention provides an ultrasonic imaging method and an ultrasonic imaging system for a heart, and belongs to the field of ultrasonic imaging. Aiming at the problem that the heart has physiological movement to bring challenge to elastography, the method comprises the following steps: firstly, imaging the heart to obtain an ultrasonic image, then identifying the myocardium from the ultrasonic image and tracking the position of the myocardium (such as a to-be-observed myocardium segment) to obtain the real-time position of the myocardium, and then carrying out elastography on the basis of the real-time position of the myocardium; further, in consideration of the fact that the heart has chamber structures such as an atrium and a ventricle which can affect propagation of shear waves, acoustic radiation force is applied to the to-be-observed cardiac muscle (such as the geometric center or the gravity center) based on the real-time position of the cardiac muscle to generate the shear waves, and therefore the effectiveness of generation of the shear waves and the sufficient signal-to-noise ratio are guaranteed.

The invention relates to an anesthesia puncture visual navigation system combining augmented reality and three-dimensional reconstruction, and belongs to the technical field of anesthesia puncture visual navigation. The anesthesia puncture visual navigation system comprises a physiological movement monitoring unit used for simultaneously collecting respiratory movement cycle data and soft tissue elastic deformation information; a comprehensive motion state data packet is generated by calculating the correlation coefficient of the breathing amplitude and the tissue elasticity modulus change rate, the space deviation caused by breathing motion and soft tissue deformation of a patient to puncture navigation can be effectively compensated, the puncture precision is remarkably improved compared with a traditional static navigation system under the normal breathing state of the patient, and the puncture accuracy is improved. The puncture failure rate and the complication risk are effectively reduced, the problem that precision is further deteriorated due to the fact that correction parameters are still used blindly when registration quality is deteriorated in a traditional system is solved, dependence on personal experience of doctors is reduced, and the problem that the system is completely invalid possibly caused by a single correction mode is solved.

The embodiment of the invention provides a glenoid fossa prosthesis, a glenoid fossa prosthesis model generation method, a glenoid fossa prosthesis model generation device, computing equipment and a computer program product. The method comprises the following steps: acquiring mandibular movement data and skeleton image data of a test object; establishing a skeleton model of the test object according to the skeleton image data; carrying out motion loading on the skeleton model according to the mandibular motion data; performing motion simulation based on the skeleton model after motion loading to generate a mandibular motion envelope surface; determining parameters of a glenoid fossa prosthesis model according to the mandibular movement envelope surface, and generating the glenoid fossa prosthesis model, namely, constructing a kinematics model based on temporal-mandibular joint movement data of a normal person with extrawings attached, and determining the mandibular movement envelope surface based on a condylar process vertex; according to the articular fossa prosthesis model of the artificial temporomandibular joint prosthesis with the extrawing muscle attachment, the technical problem that the articular fossa prosthesis cannot adapt to the physiological movement range of the artificial mandibular branch prosthesis in the related technology is solved.

The present invention relates to an orthodontic appliance and system for aligning the patient's teeth. It consists of a specially designed bracket with rounded edges and several guides or perforations around the wing, to which a special fastening system is applied. This method allows for treatment under a straight-wire orthodontic system with light forces and minimal friction between the archwires and the bracket. It promotes the physiological movement of the teeth on the alveolar bone and supporting tissues, maintaining a perfect balance between muscular forces and producing a more stable position in the alveolar bone.

The utility model relates to the field of medical instruments, in particular to an adjustable mandibular protraction appliance device. The device is used for adjusting the sagittal position and the vertical position of the lower jaw when the lower jaw of an OSAHS patient stretches forwards, and comprises a 3S curved device and a retention block device. The first device is formed by bending a 0.0215 * 0.028 clinical stainless steel orthodontic steel wire and has enough hardness and rigidity. The second device is a retention module made of self-setting resin. The overall structure has enough hardness so that the lower jaw can be in an ideal lower jaw forward stretching position, meanwhile, the S-shaped curved structure has moderate elasticity so that the lower jaw of a patient can generate the physiological motility suitable for the lower jaw in the three-dimensional direction, and the OSAHS is treated within the range of the physiological motility. The temporomandibular joint and the oral-maxillofacial muscle group of a wearer can keep a certain range of motion. Meanwhile, the problem that doctors are difficult to manufacture the fixed snore-preventing device which can meet different in-position paths of the upper and lower jaws and is convenient for patients to take off and wear is solved. The device is simple in structure, good in using effect and easy to popularize and use.

The present application relates to the field of physiological motion detection in medical devices, and particularly relates to a knee joint injury postoperative rehabilitation action recognition method, device and storage medium. The method comprises: acquiring multi-source sensor data and preprocessing to generate a preprocessing sequence; based on the preprocessing sequence, posture and gait phase analysis is performed to generate a posture sequence and a phase sequence; then segment boundary detection and action candidate generation are performed, and time sequence features are extracted, and through hierarchical action atlas matching and sequence discrimination model reasoning, an action category and a completion degree score are generated; finally, quality evaluation and safety threshold linkage comparison are performed, and strategy mapping is performed to generate a parameter update package. The present application can realize accurate recognition and quantitative evaluation of rehabilitation actions, and form a closed loop feedback, effectively improving the safety and individualization level of rehabilitation training.

The invention relates to the technical field of image analysis, in particular to a temporomandibular joint three-dimensional reconstruction system based on multi-modal image fusion, which comprises the following steps of: acquiring three-dimensional body data obtained by CBCT (cone beam computed tomography) and MRI (magnetic resonance imaging) medical images of a temporomandibular joint, and determining key points; determining a small opening process or a large opening process according to the physiological movement process; in the small opening process, a target distance is obtained according to the difference between the opening degree and a preset opening threshold value; in the large opening process, a target interval is determined directly according to the interval between a condylar process vertex and an attachment point under a preset opening threshold value and the translation distance in the translation process after the preset opening threshold value is exceeded; and finally, comparing the target distance with the model distance, and determining whether model reconstruction is needed or not. According to the method, error analysis of the whole physiological movement process can be realized through relatively clear point change, so that a more accurate and reliable three-dimensional model is obtained.

A method and device for physiological movement detection with active voice generation is provided. [Solution] A mobile device (100) is configured with an application (200) for detecting the movement of a subject (110). A processor of the mobile device detects the subject's breathing and / or whole-body movement, generates an audio signal in the vicinity of the subject via a connected speaker, and controls sensing of a reflected audio signal via a connected microphone. The reflected audio signal is a reflection of the audio signal from the subject. The processor also processes the reflected audio using demodulation techniques and detects breathing from the processed signal. The audio signal is generated as a series of tone pairs or phase-continuous repetitive waveforms with frequency changes (e.g., triangle or sawtooth) in a frame of slots. The processor further determines sleep state or scoring, fatigue symptoms, object recognition, chronic disease monitoring / prediction, and other output parameters by evaluating the detected movement information.

The invention relates to the technical field of artificial prostheses, and discloses an artificial cervical intervertebral disc based on a biological bionic structure, which comprises an upper end plate, a lower end plate and an elastomer core arranged between the upper end plate and the lower end plate, the elastomer core comprises a front annulus fibrosus, a nucleus pulposus and a rear annulus fibrosus; the front fiber ring is composed of an outer side fiber layer, a middle transition layer, an inner side fiber layer and front collagenous fibers located among the fiber layers. The artificial cervical intervertebral disc can be more naturally matched with the physiological movement mode of vertebrae after being implanted by adopting differentiated arrangement of front and rear fibrous rings, gradient dip angle design of collagenous fibers, elastic deformation characteristics of nucleus pulposus and material combination with different elastic moduli; the irregular-shaped end plate is more attached to the cervical vertebra hook process joint and adapts to multi-direction complex movement.

The invention relates to the technical field of limb training, and discloses a limb detection training tractor and a control method thereof.The limb detection training tractor comprises a fixed moving mechanism, a moving traction mechanism connected to the fixed moving mechanism, a traction adjusting mechanism connected to the moving traction mechanism and a detection structure arranged at the bottom end of the traction adjusting mechanism; the movable traction mechanism is connected to the bottom end of the detection structure, the flexible fixing mechanism is connected to the bottom end of the detection structure, and the movable traction mechanism comprises two L-shaped supporting frames, bottom cross rods fixed to the ends of the L-shaped supporting frames and first sliding blocks slidably connected to the bottom cross rods. Rehabilitation training requirements of different muscle groups and joints of limbs can be comprehensively covered, the rehabilitation training device is adaptive to various rehabilitation scenes such as upper limb lifting, abduction, front-back extension and lower limb flexion and extension, a patient is assisted to gradually recover normal limb movement functions, and comprehensiveness and pertinence of rehabilitation training are improved.

Systems, devices, and associated methods for correcting spinal column deformities that help minimize a number of attachment anchors utilized for correction, facilitate use of straight or contoured rods, and / or help promote a more natural, physiologic motion of the spinal column.

The present invention provides a method and a system for ultrasonic imaging of the heart, belonging to the field of ultrasonic imaging. In view of the problem that the physiological movement of the heart itself poses challenges to elastography, the heart is first imaged to obtain an ultrasonic image, and then the myocardium is identified from the ultrasonic image and the position of the myocardium (such as the myocardial segment to be observed) is tracked to obtain the real-time position of the myocardium. On this basis, elastography is carried out. Further, considering that the chamber structures such as the atrium and ventricle of the heart will affect the propagation of shear waves, acoustic radiation force is applied to the myocardium to be observed (such as its geometric center or center of gravity) based on the real-time position of the myocardium to generate shear waves, so as to ensure the effectiveness of shear wave generation and sufficient signal-to-noise ratio.

The application relates to the technical field of artificial prostheses, and discloses an artificial cervical intervertebral disc based on a biological bionic structure, which comprises an upper endplate, a lower endplate and an elastic body core arranged between the upper endplate and the lower endplate; the elastic body core comprises an anterior annulus fibrosus, a nucleus pulposus and a posterior annulus fibrosus; the anterior annulus fibrosus is composed of an outer fiber layer, an intermediate transition layer and an inner fiber layer and anterior collagen fibers arranged between the fiber layers; the application reproduces the structural composition and configuration of a biological cervical intervertebral disc, adopts differentiated arrangement of the anterior and posterior annulus fibrosus, gradient inclination angle design of the collagen fibers, elastic deformation characteristics of the nucleus pulposus and material combination with different elastic moduli, so that the artificial cervical intervertebral disc can be more naturally matched with the physiological movement mode of the vertebrae after being implanted; and the irregular endplate is more suitable for the cervical uncinate joint and is adapted to complex movement in multiple directions.

The present invention discloses a component for in vitro near-physiological simulation of an isolated heart, belonging to the field of medical device technology. Its design purpose is to solve the many problems existing in existing in vitro heart simulation devices, simulate the physiological movement of the heart more accurately and simplify the valve movement observation process. The component includes a transparent shell, a top cover and a reciprocating pump. The shell has a accommodating chamber for placing the isolated heart, and the top cover has inflow and outflow channels respectively connected to the left atrioventricular orifice and the aortic orifice of the heart. An observation window is provided on the top cover to observe the valve movement. The reciprocating pump changes the hydraulic pressure of the accommodating chamber through an isolation membrane to cause the heart to contract and relax. The component is also provided with multiple pressure measuring interfaces and pressure measuring components, and the shell is polyhedron for easy observation. The component can be used to accurately simulate cardiac movement and is suitable for the evaluation of cardiac implantable medical devices, such as the evaluation of parameters such as the function, biomechanical properties and damage mechanism of interventional artificial valves, etc., providing a reliable in vitro simulation environment for the development and verification of medical devices.

A fully organic degradable piezoelectric force sensor and a method for preparing the same are disclosed. Amino acid (polypeptide) wafer, preferably isoleucine wafer, under stress-induced alignment, the crystal shows very ordered structure and smooth surface on the mesoscale, which significantly enhances the piezoelectric response. In addition, the force sensor is suitable for long-term detection of physiological movements, including breathing and muscle contraction. More importantly, due to all organic and biological components, the force sensor is biocompatible and completely biodegradable. The compatibility and degradability of the force sensor in the physiological environment make it possible for the development of tissue engineering and implanted biomedical devices.

This invention discloses a virtual jawbone simulation method and system based on intraoral 3D scanning, relating to the field of computer simulation. The method includes: acquiring intraoral 3D scanning data and constructing a virtual 3D model of the maxillary and mandibular dentition; collecting intraoral scanning data according to continuous data frames of the user's opening and closing movements, identifying the relative motion information between the maxillary and mandibular dentition during the opening and closing process, and establishing a mapping relationship between opening and closing parameters and intraoral scanning data; constructing a dynamic temporal opening and closing model based on the mapping relationship, and embedding the dynamic temporal opening and closing model into the virtual 3D model to perform dynamic simulation of the maxilla and mandible. This application solves the technical problem of low matching degree between the simulated motion trajectory and the actual physiological movement law of the human mandible in existing jawbone simulations, which makes it impossible to accurately reproduce the dynamic occlusal process. It achieves the technical effect of improving the matching degree between the virtual jawbone simulation motion trajectory and the actual physiological movement law of the human mandible, and accurately reproducing the dynamic occlusal process of the maxilla and mandible.

The invention discloses an assembly for in-vitro near physiological simulation of an isolated heart, and belongs to the technical field of medical instruments. The design aims to solve a plurality of problems of the existing heart in-vitro simulation device, more accurately simulate the physiological movement of the heart and simplify the valve movement observation process. The assembly comprises a transparent shell, a top cover and a reciprocating pump. The shell is provided with a containing cavity for containing an isolated heart, the top cover is provided with an inflow channel and an outflow channel which are connected with a left atrioventricular opening and an aorta opening of the heart respectively, and the top cover is provided with an observation window for observing valve movement. The reciprocating pump changes hydraulic pressure of the containing cavity through the isolating membrane to enable the heart to contract and relax. The assembly is further provided with a plurality of pressure measuring interfaces and pressure measuring assemblies, and the shell is polyhedral so that observation can be facilitated. The component can be used for accurately simulating heart movement, is suitable for evaluating heart implantation interventional medical instruments, such as evaluating parameters such as functions, biomechanical characteristics, damage mechanisms and the like of instruments such as interventional artificial valves, and provides a reliable in-vitro simulation environment for research, development and verification of the medical instruments.

The invention discloses a digital jaw position relation determination method based on a Gothic arch, relates to the technical field of oral implant repair, and aims to solve the problem of how to accurately position the jaw position relation of a final dentition patient. The method comprises the following steps: firstly, determining a central relation position of a patient by adopting a Gothic arch tracing method to obtain a horizontal jaw position relation and an arrow vertex position; then, respectively acquiring facial three-dimensional images of the patient wearing a Gothic arch and a resting jaw to establish a three-dimensional coordinate system with facial information of the patient, and constructing a maxillary and mandibular digital model according to the maxillary and mandibular information and matching the model into the three-dimensional coordinate system; finally, the cycloid is used for driving the mandible model to rotate around the hinge shaft relative to the maxilla model so as to simulate mandible physiological movement to obtain a vertical jaw position relation, and therefore accurate positioning of the jaw position relation of the final dentition patient is completed. According to the method, mandibular movement is digitally simulated, personal errors are reduced, and the determined jaw position relation is more accurate.

The invention relates to the field of physiological movement detection in medical instruments, in particular to a knee joint injury postoperative rehabilitation action recognition method and device and a storage medium. The method comprises the steps of obtaining multi-source sensor data and performing preprocessing to generate a preprocessing sequence; performing attitude and gait phase analysis based on the preprocessing sequence to generate an attitude sequence and a phase sequence; then fragment boundary detection and action candidate generation are carried out, time sequence features are extracted, and action categories and completion scores are generated through hierarchical action map matching and sequence discrimination model reasoning; and finally, carrying out quality evaluation and safety threshold linkage comparison, and executing strategy mapping to generate a parameter updating package. According to the invention, accurate identification and quantitative evaluation of rehabilitation actions can be realized, closed-loop feedback is formed, and the safety and individuation level of rehabilitation training are effectively improved.

A spherically coupled customized dynamical transarticular anatomical external fixator designed for the rehabilitation of human body joints, particularly the elbow, but also applicable to the knee, shoulder, wrist, ankle, hip, and others. This device includes a first portion with fixation means to secure a rigid bracket to a bone of the limb's proximal portion and a second portion with fixation means to secure another rigid bracket to a bone of the distal portion. A spherical shell with projections is fixed to one bracket, while a shaped sliding guide with tracks is fixed to the other, enabling only the physiological movement of roto-translation and flex-extension of the joint. This precise movement is detected during a patient's specific articulation and is essential for effective rehabilitation, ensuring movements are natural and prevent joint damage.

The application discloses a kind of digital jaw position relationship determination methods based on gothic arch, it is related to oral implantation restoration technical field, to solve how to accurately position the problem of the jaw position relationship of terminal dentition patient.The method first determines the centric relation of patient using gothic arch tracing method, obtains horizontal jaw position relationship and arrowhead vertex position;Then respectively obtain the three-dimensional image of the face of patient wearing gothic arch and rest jaw position, to establish three-dimensional coordinate system with patient face information, then according to the information of upper and lower jaw, construct the digital model of upper and lower jaw and match to three-dimensional coordinate system, finally use cycloid to drive lower jaw model to rotate around hinge shaft relative to upper jaw model, to simulate the vertical jaw position relationship of mandibular physiology movement, to complete the accurate positioning of the jaw position relationship of terminal dentition patient.The method simulates mandibular movement by digitization, reduces artificial error, and the determined jaw position relationship is more accurate.

Methods and devices provide physiological movement detection, such as breathing, cardiac and / or gross body motion, with active sound generation using electronic processing device(s). The processor may control producing, via a speaker coupled to the processor, a sound signal in a user's vicinity. The processor may control sensing, via a microphone coupled to the processor, a reflected sound signal. This reflected sound signal is a reflection of the sound signal from the vicinity or user. The processor may process the reflected sound, such as by a demodulation technique. The sound signal may be produced as a dual tone frequency modulation continuous wave signal. Evaluation of detected movement information may determine sleep states or scoring, fatigue indications, subject recognition, chronic disease monitoring / prediction, and other output parameters.

The invention provides a lower limb walking-assisting exercise device, and relates to the technical field of medical instruments, and the lower limb walking-assisting exercise device comprises: a support frame, the bottom of which is provided with a plurality of driving wheels; the supporting device is used for supporting the axilla of the patient; the back pushing device is used for applying pushing force to the back of the patient; the leg pushing device is used for applying pushing force to the two legs of the patient in turn; the control device is used for controlling the driving wheels to rotate; the supporting device, the back pushing device and the leg pushing device are sequentially arranged on the supporting frame from top to bottom. The device provides power for walking of the patient with hemiplegic lower limbs, assists the patient in stepping, gives consideration to the balance of the patient, and facilitates recovery of the physiological movement function of the lower limbs of the patient.

Systems, devices, and methods are described for monitoring uterine activity, the system comprising: a sensor module coupled to a belly region of a female, the sensor module including at least one inertial measurement unit; a processor communicatively coupled to the sensor module, the processor being configured to execute instructions comprising: acquiring inertial motion data from the sensor module; processing the inertial motion data to differentiate uterine motion data from other physiological motion data; generating, based on the uterine motion data, a uterine activity signal by transforming the uterine motion data from a first signal domain to a second signal domain; and generating, based on the generated uterine activity signal, an output representing at least one uterine contraction within the generated uterine activity signal or activity indicating a lack of uterine contraction.

Orthotic system (1) for supporting the head holding function, comprising: - a head connection (3), - at least one guidance device (2) for reclination or inclination, - a holding device (4) for back attachment, wherein the guide device (2) is operatively connected or connectable to the head connection (3) and the holding device (4), characterized by the fact that the guide device (2) has a curved linear guide (21) which causes a force to be introduced tangentially to the physiological movement curve of the head for reclination or inclination.