267 results about "Muscle contraction" patented technology

The invention relates to the technical field of medical image processing, and discloses a craniofacial dynamic reconstruction method and system based on multi-modal data fusion, and the method comprises the steps: arranging a multi-modal data collection device in a target craniofacial region, and obtaining a static CT image, a static MRI image, a dynamic expression video sequence and a surface electromyogram signal; preprocessing the static CT image, the static MRI image, the dynamic expression video sequence and the surface electromyogram signal; inputting the preprocessed data into a multi-scale finite element model, and simulating a coupling relationship between muscle contraction force and skin deformation by adopting a biomechanical driving strategy to generate a dynamic craniofacial model; and fusing the geometric error and the motion consistency score of the real data by adopting a linear regression method, and outputting a comprehensive reconstruction quality index. According to the method, the problems of low craniofacial dynamic modeling accuracy and poor robustness in the prior art can be solved.

Wearable sensors and uses thereof are disclosed. Preferred sensors include surface EMG electrodes for measuring electrical muscle activity, by which muscle contraction is measured. Such muscle contraction can be used to determine a person's posture, especially when the contraction being measured is that of core muscles. An alert preferably is provided to a person in real time when an incorrect posture is detected. By providing such biofeedback, a person is trained in maintaining a good posture. Such posture training is believed to heal alleviate or even present lower back pain. Wearable sensors of the invention also can be used to measure contraction in muscles during exercise, including running and strength training, to gain information for use in improving such activities.

A modular prosthetic system for an upper limb in which the functional commands of the mechanical limb can be generated by exploiting additional input data with respect to the only muscle contractions of the muscles present on the patient's stump, and the patient can receive a sensory feedback, the richer as possible, regarding to the functionality of the mechanical limb.The modularity of the prosthetic system allows the use of a mechanical artificial limb that essentially implements the pure operational and sensory functions, while the control functions by the patient, and the feedback functions provided to the patient, are managed by a subsystem (called control module) distinct and decoupled from the artificial limb, with which it interacts through appropriate interfaces.

The invention provides an electrical stimulation thumbtack needle system and method, and the method comprises the steps: determining the change gradient of the muscle contraction intensity of a target user through the median frequency feature of an electromyographic signal on the skin surface of the target user, and further determining the muscle fatigue feature of the target user; determining the change trend of the skin resistance of the target user according to the fluctuation characteristics of the skin resistance in the skin resistance data of the target user and the environmental temperature and humidity of the target user, and determining the tolerance index of the target user to electrical stimulation according to the muscle fatigue characteristics and the change trend of the skin resistance; the parameter deviation of each thumbtack needle of the electrical stimulation thumbtack needle equipment in the electrical stimulation process is determined; and based on all the parameter deviations, adjusting electrical stimulation parameter information of the electrical stimulation thumbtack needle equipment, and controlling the electrical stimulation thumbtack needle equipment to continuously perform electrical stimulation on the target user. By adopting the scheme, the stimulation parameters of the electrical stimulation thumbtack needle equipment can be dynamically adjusted according to the real-time physiological data of the user.

The invention provides a pneumatic soft snakelike robot and a walking control method and system, and is applied to the technical field of robots, the pneumatic soft snakelike robot comprises a tail part, a front part, a head part and other main parts, the tail part and the front part are designed by adopting a plurality of pneumatic muscle modules, the length of the snakelike robot can be conveniently adjusted by adding the pneumatic muscle modules, and the robot is more flexible. The pneumatic muscle modules are made of soft materials, simple in structure, small in size, good in flexibility and more suitable for moving in complex or narrow space. Besides, the pneumatic bionic muscle is of a tubular structure and is divided into a left air cavity and a right air cavity, the pneumatic muscle is driven to contract through inflation and deflation to achieve movement of the snakelike robot, various movement gaits can be achieved in a distributed driving mode, and the movement gaits and the movement form of the snakelike robot are closer to those of a biological snake.

The invention provides a skin care composition with an anti-aging effect and a preparation method and application thereof, and belongs to the technical field of beauty and skincare, the composition is characterized in that retinol, a polypeptide compound, ceramide, astaxanthin and resveratrol have a synergistic effect on component combination, so that all-around anti-aging is realized, and the skin care effect is good. According to the present invention, the raw materials are respectively adopted to provide effects of collagen generation promotion, muscle contraction wrinkle solving, barrier function enhancing, free radical scavenging, melanin formation inhibition and the like, the preparation method comprises the following steps: precise temperature control, suitable stirring mode, high-precision stirrer and other advanced technologies ensure uniform mixing of the components, inert gas protection and PID temperature controller retention of the activity and the effects of the components, in the aspect of application, the composition is reasonably added into face cream, emulsion, essence and facial mask, diversified requirements are met, deep nourishing, refreshing care, efficient permeation and instant effects are respectively provided, in a word, an efficient, safe and comprehensive anti-aging scheme is provided for consumers, aging signs are improved, and the composition is wide in prospect and high in value.

The invention relates to a chin electrical stimulation combined upper airway muscle group training system and method based on bioelectric feedback, and belongs to the field of upper airway muscle group training. Comprising a pressure detection module used for detecting a pressure value in an upper respiratory tract muscle group training process; the myoelectricity acquisition module is used for detecting myoelectricity numerical values in the training process of the upper respiratory tract muscle group; the electrical stimulation output module is used for stimulating partial nerve excitation and muscle contraction of the muscle group of the upper respiratory tract of the trainee; the signal conditioning module is used for carrying out preprocessing and analog-to-digital conversion on signals transmitted among the modules; and the control module is used for controlling signal interaction in the whole training process. And the display interaction terminal is used for interacting with the trainee. Based on bioelectricity feedback, a new individualized electrical stimulation and upper airway muscle group training treatment mode is newly established, accurate electrical stimulation and training intensity are formulated, and fatigue and injury are avoided.

A method for providing a plyometric exercise to a subject, including: selecting at least one target region of interest (RO I) in a subject body for a plyometric exercise; positioning at least 2 electrodes above a tissue volume at the selected target ROI; generating at least one electric field by at least one pulse generator electrically coupled to the at least 2 electrodes; delivering the at least one electric field between the at least 2 electrodes to the tissue volume with parameter values selected for contracting at least one muscle in the tissue volume as part of a plyometric exercise of the at least one muscle.

The invention discloses an adjustable auxiliary device for ultrasonic diagnosis in the obstetrics and gynecology department, relates to the technical field of medical treatment, and aims to solve the technical problems that a coupling agent is easily contracted and extruded by muscles, so that detection is inaccurate, and misdiagnosis is easily caused. According to the invention, the extrusion sheet which deforms due to the influence of human body temperature is utilized to automatically supplement the coupling agent, ensure the coherence of the detection process, shorten the time and reduce the discomfort of the patient and the influence risk of the detection result. The elastic clamping sheet is matched with the elastic clamping groove to dynamically adjust the supplement amount of the coupling agent, so that sufficient coupling agent at each detection part is ensured, ultrasonic conduction is stable, and accurate diagnosis is assisted. The spiral guide body design of the coupling agent guiding mechanism can guide the redundant coupling agent to flow and prevent the redundant coupling agent from dripping at the bending position, and the probe circuit can be protected. The grab handle and the pressure suction mechanism work cooperatively to efficiently collect redundant coupling agents, so that the cleaning workload is reduced, and the detection convenience is improved.

The invention discloses a mu-type conotoxin peptide mutant as well as a pharmaceutical composition and application thereof. The amino acid sequence of the mu-type conotoxin peptide mutant is as shown in SEQ ID NO. 1. Compared with a wild type mu-type conotoxin peptide, the mu-type conotoxin peptide [d-Arg2, Ser17]-dR-mu-CnIIIC disclosed by the invention has higher activity, the animal activity is improved by more than 20 times, and muscle contraction can be effectively reduced by specifically blocking a Nav1.4 channel. In addition, the compound can be used as a non-invasive anti-wrinkle treatment means to reduce or eliminate the formation of wrinkles on the human skin surface, and has a wide application prospect in the fields of medical treatment and beauty.

The application discloses a respiratory neuromuscular stimulation control method and system, and relates to the technical field of medical treatment. The method comprises the following steps: collecting body parameter information of a user; determining stimulation parameters of the user according to the body parameter information and parameters stored in a database; processing an initial muscle contraction signal obtained from a treatment terminal through a signal processing module before electric stimulation is performed on the body of the user, so as to obtain an initial muscle contraction filtered signal; wherein the initial muscle contraction signal is sensed by the treatment terminal attached to the body of the user; and controlling the current of the electric stimulation generated by the treatment terminal arranged on the body of the user in real time according to the stimulation parameters of the user, the initial muscle contraction filtered signal, a real-time muscle contraction filtered signal and real-time breathing conditions, through a self-adaptive current adjustment model which is trained and optimized. The application improves the efficiency of electric stimulation.

The invention discloses an upper limb rehabilitation intelligent self-adaptive system based on multi-modal fusion and MRD-FES cooperation. The system comprises a multi-modal signal acquisition module, a dynamic intention analysis module, a variable damping precise execution module, a neural remodeling strengthening module and a quantitative effect evaluation module. The tDCS-MRD-FES time sequence cooperation protocol is provided, the cortical excitability is improved through tDCS preprocessing, MRD drives training based on intention, FES closed loop strengthens muscle contraction, and vibration tactile feedback is assisted to strengthen sensory movement integration. And the quantitative effect evaluation module further combines a neuroplasticity index and clinical scale digitalization to realize dynamic optimization of training parameters.

Systems and devices for providing stimulation to target tissue to locate nerves. Devices may incorporate the use of haptic feedback to provide surgeons optimal communication of device status and / or target tissue excitability. Haptic communication may also work in conjunction with visual indicators to provide dual confirmatory responses to the user or signal other information. Haptic communication is also used to be timed with the application of electrical stimulation to elicit a feeling of contraction in the surgeon's hands as they apply electrical stimulation to a target nerve that results in a muscle contraction.

The invention discloses an interactive humanoid robot expression simulation method based on artificial intelligence, and relates to the technical field of expression simulation, and the method comprises the steps: collecting a brain wave signal of a user, carrying out the preprocessing, and generating a power spectrum density feature; inputting the power spectral density features into a pre-trained emotion classification model, and outputting an emotion category and an emotion intensity value of the user; performing emotional expression mapping on the emotional category and the emotional intensity value, and outputting a bionic muscle contraction instruction; performing facial adjustment on facial muscle fibers of the humanoid robot according to the bionic muscle contraction instruction, dynamically adjusting surface texture details of the humanoid robot, and generating a simulated micro expression; and capturing user face feedback data through camera shooting eyeballs, evaluating the acceptance degree of the user on the simulated micro-expression based on the user face feedback data, and outputting an expression optimization strategy. According to the method, through deformation matching and expression optimization double-closed-loop modeling driven by user feedback, biological simulation of micro-expressions of the humanoid robot is realized.

The invention relates to an inflatable glove combined low-frequency electrical stimulation wrist-hand movement device, which comprises an inflatable glove and at least one group of electrical stimulation parts, the inflatable glove is a finger separating glove which is provided with an opening at one end and can be sleeved on a hand, and each finger part of the inflatable glove is provided with a segmented inflation and deflation structure; the electrical stimulation part is arranged to be a low-frequency electrode device which is adjustable in size and can be arranged on the wrist in a sleeving mode, and the face, facing the arm, of the electrical stimulation part releases low-frequency current in a mode of being attached to the skin. Through the arrangement of the inflatable glove and the electrical stimulation part, the device can be combined with air pressure massage and electrotherapy massage into a whole when in use, so that the hand and wrist of a patient can be better treated, and the treatment effect is improved; in addition, by adjusting the current in the electrical stimulation part, the device can be conveniently adjusted according to different patients and different muscle contraction conditions of the patients during use.

The invention provides a tendinopathy rehabilitation training and monitoring system based on electrical stimulation, and the system comprises a detection unit which is used for measuring the electrical impedance of the tendon and muscular tissue of a patient before rehabilitation training, and providing a basis for the initial setting of electrical stimulation parameters; the electrical stimulation unit is used for monitoring the muscle contraction degree, the motion angle and the angular velocity, the blood oxygen metabolism condition of a tendon area and the pressure condition around muscles of the rehabilitation person under electrical stimulation in the rehabilitation training process. A muscle electrophysiological sensor, a joint angle sensor, a near infrared spectrum sensor, a motion capture sensor, a pressure pad sensor and the like are utilized, rehabilitation training conditions can be monitored from multiple aspects, a more detailed rehabilitation training report is generated in combination with various weight ratios, targeted training can be carried out on different individuals, various parameters can be adjusted, and the rehabilitation training efficiency is improved. The training effect is improved, training information can be fed back in time, and doctors can conveniently carry out whole-course coordination management on training.

The invention discloses a muscle force estimation method based on surface electromyogram signals and adjustable input characteristics. The method comprises the steps that the surface electromyogram signals and force signals in a muscle contraction state are synchronously collected; the EMD-DWT method is adopted to preprocess the surface electromyogram signals; segmenting the surface electromyogram signals and the force signals by adopting a sliding window, extracting features of the surface electromyogram signals, extracting an average value of the force signals, and making sample labels; a Pearson's correlation coefficient method is adopted to calculate correlation coefficients of the extracted features and the force signals; sequentially adding features with high correlation coefficients to form an input vector of the model, constructing a muscle force estimation regression model for training and testing, and adjusting the number of input features according to errors of a training set and a testing set. According to the method, effective features can be accurately and rapidly extracted, the number of the features can be determined, and it is guaranteed that high muscle force estimation precision is achieved under the condition that the input dimension is low.

The utility model provides an ankle pump movement device for preventing lower limb deep venous thrombosis, which relates to the technical field of medical training and comprises a base and a pedal, a rotating shaft for controlling the pedal to rotate is arranged outside the base, and the pedal is arranged outside a support frame. A fixed adjusting mechanism used for adjusting the axis position of the supporting frame is arranged outside the rotating shaft, and the fixed adjusting mechanism comprises fixed plates symmetrically arranged outside the rotating shaft; through the arrangement of the gravity block, the control push plate, the control spring and the toe plate, a user can normally step on the foot when stepping on the foot. When the user hooks the feet, the toe plate can assist in completing upward hooking of tiptoes at the maximum angle, tibia anterior muscles can contract and become short, and triceps calf muscles can relax and extend, muscle contraction and relaxation are alternately carried out, blood and lymph backflow can be squeezed like a pump, and meanwhile, when the muscles are relaxed, the user can feel comfortable when hooking the feet. And fresh blood can be supplemented, so that a better exercise effect is achieved.

The invention discloses an active constant-speed treatment and training method for patients with neurodegenerative diseases and myasthenia, and the method comprises the steps: promoting nerve remodeling through active constant-speed training, enabling the patients to use active constant-speed training equipment, and adjusting the training speed, the angle range and the impedance torque. The device activates a specific muscle group in a safe and controllable environment through an adaptive impedance training technology, gradually enhances training impedance to improve muscle strength, enhances muscle contraction efficiency through targeted training, promotes neural pathway reconstruction and improves nerve-muscle cooperative control ability, and thus achieves neural function recovery and improvement. Therefore, drug therapy provides neuroprotection and muscle function support for a patient, active constant-speed training further promotes the rehabilitation progress through accurate control and real-time feedback, and meanwhile, the flexibility and individuation of training are improved through the multi-mode man-machine interaction and cloud remote guidance functions, so that the rehabilitation effect of the patient is improved. And the treatment effect and life quality of patients with neurodegenerative diseases and myasthenia are improved.

Medical devices, systems, and methods for pain management and other applications may apply cooling with at least one probe inserted through an exposed skin surface of skin. The cooling may remodel one or more target tissues so as to effect a desired change in composition of the target tissue and / or a change in its behavior, often to interfere with transmission of pain signals along sensory nerves. Alternative embodiments may interfere with the function of motor nerves, the function of contractile muscles, and / or some other tissue included in the contractile function chain so as to inhibit muscle contraction and thereby alleviate associated pain. In some embodiments, other sources of pain such as components of the spine (optionally including herniated disks) may be treated.

A device for providing a magnetic treatment by evoking muscle contraction by a time-varying magnetic field and providing a RF treatment by heating biological structure. The device may provide a pressure treatment. The device includes an applicator having an RF electrode and a magnetic field generating device. The device may also include a main unit, a human machine interface, and a control unit. The control unit adjusts a signal provided to the RF electrode and creates an RF circuit, and also adjusts the signal provided to the magnetic field generating device and creates a magnetic circuit electrically insulated from the RF circuit. The RF circuit may include a power source and a power amplifier, and the magnetic circuit may include an energy storage to supply the magnetic field generating device with electric current.

The invention relates to the field of foods, and particularly discloses a micromolecule peptide-based nutritional food for preventing muscle attenuation for the elderly and a preparation method of the micromolecule peptide-based nutritional food. Comprising the following components in parts by weight: 23-50 parts of protein, 35-60 parts of carbohydrate, 4-9 parts of fat, 1-10 parts of dietary fibers, 0.5-1.2 parts of mineral elements, 0.1-1.0 part of vitamins, 0.2-1 part of dietary essence and 1-6 parts of new resource food. The small molecule peptide (containing collagen peptide) and the whey protein (containing branched chain amino acid) are combined to improve muscle quality through double ways of promoting synthesis and inhibiting decomposition, the effect is better than that of a single peptide component, and vitamin D3, magnesium element (Mg) and fructo-oligosaccharide are supplemented to act on muscle contraction, energy metabolism and intestinal tract-muscle axis links respectively, so that the muscle quality is improved. A systematic intervention scheme is formed, and the raw materials required by the preparation of the related small molecule peptide-based muscle attenuation-preventing nutritional food for the elderly are wide in source and relatively low in cost.

The invention provides a peripheral nerve precise regulation and control method and system based on a multi-channel flexible electrode, and is applied to the technical field of data processing. Physiological parameter information of a target user is processed based on a target peripheral nerve stimulation model, muscle contraction characteristic comprehensive indexes are generated, the muscle contraction characteristic comprehensive indexes comprise muscle contraction amplitude and contraction frequency, and the contraction frequency is clearly distinguished according to fast muscles, slow muscles and different motion modes; processing the training purpose information and the muscle contraction characteristic comprehensive index of the target user based on the target peripheral nerve stimulation model, and generating a preliminarily adjusted muscle contraction signal; processing the preliminarily adjusted muscle contraction signal based on the physiological feature information of the target organ to generate a secondarily adjusted muscle contraction signal; and processing the muscle contraction signal after secondary adjustment based on the motion intensity interval information of the target organ, and generating a target peripheral nerve stimulation signal.

The utility model provides a neuromuscular low-frequency electrical stimulator, which relates to the field of low-frequency electrical stimulators, and comprises a miniature low-frequency electrical stimulator, the outer surface of the miniature low-frequency electrical stimulator is fixedly connected with a connecting piece, the output end of the miniature low-frequency electrical stimulator is fixedly provided with a movable block, and the bottom surface of the movable block is provided with an electrode plate. The electrode plate is made of a soft material, the miniature low-frequency electrical stimulator is electrically connected with the electrode plate, and an adhesive layer is arranged on the bottom surface of the electrode plate and is used for adhering to the skin of a human body. According to the neuromuscular low-frequency electrical stimulator, the arranged electrode plate is made of a soft material, the bottom surface of the electrode plate is provided with the adhesive layer, the adhesive layer can be adhered to the skin of a human body, and the miniature low-frequency electrical stimulator acts specific low-frequency impulse current on the human body through the electrode plate, so that the purpose of muscle contraction is achieved; the miniature low-frequency electrical stimulator can be fixed to legs and arms of a human body for use, is small in size, and can meet the requirement of temporary use.

A portable exercise machine useable for isometric exercise and conditioning of the multifidus muscle has a seat with an adjustable upwardly inclined arm member and an adjustable downwardly inclined leg member. A handle connected to the arm member is adapted to be gripped by the user to perform static muscle contraction and stretching. A foot rest connected to the leg member allows the user's heels to rotate downwardly forcing the pelvis to lock and isolate the multifidus muscle for stretching and strengthening.

The invention belongs to the technical field of medical rehabilitation instruments and biological signals, and particularly relates to a multi-mode fusion intelligent rehabilitation evaluation system based on EMG and PPG. The system comprises a flexible multi-mode sensor array module used for collecting surface electromyogram signals EMG and photoelectric volume pulse wave signals PPG and capturing muscle activation intensity and blood perfusion dynamics in real time; the self-adaptive contact enhancing module is used for driving the airbag assembly to dynamically adjust the contact pressure between the embedded pressure sensor and the skin through the micro air pump; the edge calculation unit module is used for carrying out localization processing on the collected original signals, quantitatively evaluating the collaboration of muscle activity and blood flow fluctuation and judging whether muscle contraction drives local blood flow change or not or whether vessel limitation reversely inhibits neuromuscular activation or not; and the lightweight classification model module is used for processing the time-frequency characteristics of the EMG and the waveform fragments of the PPG, and outputting rehabilitation state labels after screening key collaborative characteristics through an attention mechanism.

The invention provides a brachial plexus and exoskeleton cooperative control method and system based on a brain-computer interface, and relates to the field of intelligent control. The method comprises the steps that electroencephalogram signals and upper limb electromyographic signals of a target object during motor imagery are collected; predicting the motion intention of the target object through a neural network based on the electroencephalogram signals and the upper limb electromyographic signals; based on the motion intention, determining a target brachial plexus branch according to a preset motion intention and brachial plexus mapping rule; generating a nerve stimulation control instruction and an exoskeleton cooperative control instruction based on the target brachial plexus branch and the motion intention; and according to the nerve stimulation control instruction, performing electrical stimulation on the target brachial plexus branch to drive the corresponding muscle to contract, and meanwhile, according to the exoskeleton cooperative control instruction, controlling the upper limb exoskeleton to apply assistance to the corresponding joint. The method and the device are used in the cooperative control process of the brachial plexus and the exoskeleton, and the technical problem of inaccurate control in the existing limb control process based on neural signals is solved.

Apparatus and methods for treating back pain are provided, in which an implantable stimulator is configured to communicate with an external control system, the implantable stimulator providing a neuromuscular electrical stimulation therapy designed to cause muscle contraction to rehabilitate the muscle, restore neural drive and restore spinal stability; the implantable stimulator further including one or more of a number of additional therapeutic modalities, including a module that provides analgesic stimulation; a module that monitors muscle performance and adjusts the muscle stimulation regime; and / or a module that provides longer term pain relief by selectively and repeatedly ablating nerve fibers. In an alternative embodiment, a standalone implantable RF ablation system is described.

1. The name of the design product: pelvic floor muscle trainer (PF01). 2. The use of the design product: applied to the training and evaluation of the contraction ability of the pelvic floor muscles of women after childbirth, and auxiliary rehabilitation of the pelvic floor muscles of women after childbirth. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1. 5. Other conditions that need to be explained: the bottom baffle is buckled and fixed, and can be disassembled.

The invention relates to the technical field of acupuncture training models, and particularly discloses a traditional Chinese medicine acupuncture training model which comprises an arm model. Puncturing the epidermis; the muscle simulation mechanism is located below the puncture epidermis; an acupuncture depth detection mechanism; according to the traditional Chinese medicine acupuncture and moxibustion training model, muscles with different compaction degrees are simulated through the arranged muscle simulation mechanism, so that the influence of the muscles with different compaction degrees on filiform needle puncture during acupuncture and moxibustion of patients with different constitutions such as obesity or strong constitutions in reality is simulated; a medical student is assisted in training finger force, the acupuncture depth and the acupuncture angle of the medical student during acupuncture are detected through the arranged acupuncture depth detection mechanism, and the air feeling simulation mechanism simulates muscle contraction reaction when the medical student controls the acupuncture needle to lift, insert and twist, so that the medical student is assisted in experiencing air feeling during acupuncture. Therefore, medical students can practice acupuncture and moxibustion under the condition close to reality, and the acupuncture and moxibustion skill is improved.