24 results about "Physiological movement" patented technology

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 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 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 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.

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.

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 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.

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.

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.

A motion-preserving spinal implant is presented for placement within the intervertebral space for the total replacement of a degenerated spinal disc. The motion-preserving spinal implant has a pair of endplates sandwiched around an inner and an outer core, with the inner core positioned concentrically within the outer core. The outer core encapsulates the inner core and provides a proper seal while maintaining flexibility and elasticity to advantageously support physiological movements. The inner core is constructed of an elastomeric material and acts as a solid diaphragm to resist and withstand localized compression and other forces. The endplates provide anchorage and fusion with the adjacent vertebrae and maintain the inner and outer cores in place.The motion-preserving spinal implant restores normal height and natural function to the degenerated spinal disc and preserves natural spinal movement.

The present application relates to the technical field of image analysis, in particular to a kind of temporomandibular joint three-dimensional reconstruction system based on multimodal image fusion, comprising: obtaining the three-dimensional body data of CBCT and MRI two kinds of medical images of temporomandibular joint, determine key point;According to physiological movement process determines small opening process or big opening process;When small opening process, according to the difference between opening degree and preset opening threshold obtains target interval;When big opening process, directly according to the interval of condylar apical point and attachment point under preset opening threshold, and the translation distance in translation process after exceeding preset opening threshold, determine target interval;Finally, according to target interval and model interval, determine whether model reconstruction is needed or not.Compared with prior art, the present application can realize the error analysis of overall physiological movement process by relatively clear point change, so as to obtain more accurate and reliable three-dimensional model.

A mobile spinal implant is placed between vertebrae to replace a degenerated intervertebral disc. The mobile spinal implant has a pair of endplates sandwiching a core and an outer nucleus, with the core concentrically located within the outer nucleus. The outer nucleus encloses and properly seals the core, maintaining adequate elasticity and flexibility to facilitate physiological movement. The core is made of an elastic material and acts as a solid septum to resist and withstand local pressures and other forces. The endplates provide fixation and fusion with adjacent vertebrae and maintain the core and outer nucleus in their position. The mobile spinal implant restores the degenerated intervertebral disc to its normal height and function while preserving normal vertebral mobility.

The invention belongs to the technical field of medical instruments, and particularly relates to an ascending aorta covered stent with biomechanical property, which comprises a support skeleton, the inner side and the outer side of the support skeleton are both covered with films, the support skeleton is formed by spirally winding functional metal wires, the functional metal wires are formed by spirally winding composite wires, and the functional metal wires are wound by the composite wires. And the composite filament is formed by weaving a plurality of strands of filaments. In terms of overall performance, the large vessel covered stent can be highly synchronized with radial expansion / retraction, circumferential stretching, longitudinal displacement and slight torsion generated by the ascending aorta in the cardiac contraction and diastole period, and therefore natural physiological movement of the aorta is effectively simulated.

The invention discloses an intelligent navigation system and device for a digestive tract endoscope. The system comprises a multi-source information acquisition unit used for acquiring interventional end pose data and physiological monitoring signals; the dynamic model processing unit is used for carrying out deformation prediction and dynamic updating on the digestive tract three-dimensional model according to the physiological signals; and the data fusion navigation unit is used for registering the pose data with the dynamic model to provide navigation guidance, and triggering online calibration of the model when the navigation deviation exceeds a threshold value and the condition is judged to be met in combination with the local anatomical structure. According to the method, by fusing multi-source information and dynamic model compensation, the problem that the endoscope navigation precision is reduced due to physiological movement is solved, high-precision and self-adaptive real-time path guiding under the digestive tract dynamic deformation environment is achieved, and the accuracy and safety of examination are effectively improved.

The invention discloses a full wrist joint prosthesis with a distal radioulnar joint, and relates to the field of joint prostheses. According to the full wrist joint prosthesis with the distal radioulnar joint, due to the design that the joint head component in the joint component can rotate and can be contained in the joint nest component in the axial moving mode, accurate simulation of physiological movement of the distal radioulnar joint is achieved; the articular head component is allowed to rotate around multiple axes in the articular fossa component so as to be matched with anterior and posterior rotation actions of the forearm, and is allowed to slightly slide in the axial direction so as to simulate physiological translation of the ulna relative to the radius, so that the internal constraining force between prosthesis components in the forearm rotation process is reduced, and the anterior and posterior rotation of the anterior and posterior rotation of the anterior and posterior rotation of the anterior and posterior rotation of the anterior and posterior rotation of the anterior and posterior rotation is facilitated. A postoperative patient can obtain a rotation function closer to nature, and abnormal stress transmitted to a bone prosthesis interface due to movement mismatching is effectively reduced.

The utility model provides a respiratory gating test simulation device and an emission computed tomography system, which are used for respiratory gating test of the emission computed tomography system, and comprise a cavity for accommodating an air bag for collecting physiological movement signals; the point source device is connected with the air bag and is used for placing a radiation point source; the movement mechanism is connected with the air bag and / or the point source device; and the driving source is connected with the movement mechanism and is used for driving the movement mechanism to move, so that the air bag and the point source device synchronously and periodically move under the driving of the movement mechanism. The respiratory gating test simulation device and the emission computed tomography system replace experimental animals to simulate respiration, use of the experimental animals is reduced, use of drugs is reduced, time for operators to make contact with radioactive sources is shortened, and occupational protection is facilitated. Simulation of different breathing cycles and breathing depths can be carried out, the stability is higher, and the cost is lower.