14 results about "Physiological movement" patented technology

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.

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 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 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.

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 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.