79 results about "Pulse electromagnetic field" patented technology

Pulsed electromagnetic field systems include planar microcoil arrays integrated into clothing. The planar microcoil arrays are connected to a neuromodulation controller and configured to generate an electrical current and transmit that electrical current, in accordance with a particular stimulation protocol, to each of the planar microcoil arrays.

The invention relates to an imaging type non-contact gating signal obtaining method for a magnetic resonance system, and belongs to the field of physiological signal detection.The method comprises the steps that pulse and respiration signals of a magnetic resonance detection patient are collected through a camera, and face information of the patient is obtained through a reflector in a magnetic resonance instrument cavity; a living body skin detection technology is utilized to efficiently select a region of interest of the face of a patient, and an IPPG technology is combined to process a video image to obtain a curve of image gray along a time sequence; a motion detection algorithm is used for tracking micro motion of the chest, and stable and accurate breathing signals are extracted by combining frequency selection. By analyzing and quantifying pulse wave signals and delay of respiration signals and electrocardiosignals, the purpose of replacing electrocardiosignal R-peak gating triggering with pulse wave and respiration signal feature triggering is achieved. The invention provides an imaging type non-contact gating technology to solve the problems that traditional ECG and other contact gating technologies are easily affected by a strong static magnetic field, an alternating gradient magnetic field and a radio-frequency pulse electromagnetic field in a magnetic resonance imaging system, and motion artifacts can be generated on motion of fluid such as human blood, breathing and cardiac contraction. Therefore, the quality of a magnetic resonance imaging image is improved.

The invention is a portable micromagnetic field generator device comprising a battery, a circuit board with a microcontroller, a memory and a current amplifier. The memory functions to store information, such as audio information, for the generation of specific pulsed magnetic field frequencies of pairs of such frequencies. The MCU uses the stored information to form a variable microcurrent, which is amplified via a current amplifier. The amplified current is used by a coil assembly to generate a variable micromagnetic field. The device is kept in close proximity to a user's body for the micromagnetic field to impart its therapeutic effects. The device also includes a display device and several buttons so that users may select the type of micromagnetic field they wish to use, as well as stop, start and pause the micromagnetic field generation.

The invention relates to the technical field of magnesium alloy material processing, in particular to a magnetic pulse generation cast-rolling casting nozzle with a solidification structure regulation effect, which comprises a casting nozzle main body unit, a transmission unit and a magnetic pulse generation unit. The motor drives the coil box to move to the position close to the roller along the guide rail, so that a pulse electromagnetic field generated by the coil accurately acts on the solidification front edge; a plurality of positioning grooves are formed in the coil box, the coil can be divided into a middle coil and an edge coil, pulse electromagnetic fields are generated by utilizing currents with different intensities and frequencies at the edge and the middle, a solidification structure generates an induced magnetic field and is subjected to the action of Lorentz force, structure exchange is formed, and the consistency of the temperatures of the middle and the edges of a cast-rolling area is guaranteed; therefore, the shape of the cast-rolling solidification welding line is regulated and controlled. The method can promote nucleation at the solidification front edge, effectively refine the solidification structure, reduce macrosegregation, improve the problem of non-uniform cooling of the casting-rolling middle part and the casting-rolling edge part and effectively inhibit magnesium alloy casting-rolling edge cracks, and has important application value in the casting-rolling field.

The invention discloses a passive wireless bolt axial force measuring method and equipment, the bolt axial force measuring equipment comprises a pulse transmitting unit, a transmitting end transmitting coil, a transmitting end receiving coil, an electric signal detection unit, a receiving end coil, a piezoelectric sensor and an ultrasonic probe, the pulse transmitting unit can generate an electric pulse signal with the pulse width of 100-0.01 us, and the receiving end coil can generate an electric pulse signal with the pulse width of 100-0.01 us; the electric pulse signal is received by the transmitting end transmitting coil to generate an induction pulse electromagnetic field, the induction pulse electromagnetic field is received by the receiving end coil to be transmitted to the piezoelectric sensor, the piezoelectric sensor generates ultrasonic waves, the ultrasonic waves act on the bolt and then are reflected, and the reflected ultrasonic signal outputs an electric signal through the piezoelectric sensor; after the electric signal detection unit receives the electric signal through the transmitting end receiving coil, the bolt axial force is calculated based on the ultrasonic propagation sound time when the ultrasonic propagation sound time is measured.

The utility model relates to a massage device which comprises a massage module which provides a massage function for at least one part of the body of a user, and the massage module comprises a massage ball frame capable of rotating by taking a shaft extending leftwards and rightwards as a reference, a massage ball arranged on the massage ball frame, and a pulse electromagnetic field generator arranged on the massage ball frame and used for generating a pulse electromagnetic field on the massage ball frame. And generate a pulsed electromagnetic field in the body of the user as a function of the applied power source.

The invention discloses a gradient strengthening preparation method of a cast high-entropy alloy composite material based on a laser cladding preform, and belongs to the technical field of metal matrix composite material preparation. The method comprises the following steps: firstly, preparing composite powder of a high-entropy alloy and a nano ceramic reinforced phase by combining plasma-assisted ball milling with a pulse electromagnetic field; then constructing a prefabricated body with a gradient pore structure by adopting an intelligent regulation and control laser cladding technology; the prefabricated body and a congruent-component high-entropy alloy cast ingot are innovatively metallurgically bonded through a vacuum gradient infiltration process, and a large-size overall composite material is prepared; and finally, forming a gradient nanostructure on the surface layer of the material through ultrasonic-assisted laser surface reconstruction and small-deformation gradient heat treatment. According to the method, the technical problems that reinforcing phases are uneven in distribution, the interface bonding strength is low, and large-size components are difficult to prepare are successfully solved, the prepared composite material has the excellent gradient performance that the surface hardness is larger than or equal to 12 GPa, and the core hardness is larger than or equal to 8 GPa, ceramic particles are evenly distributed in a three-dimensional network shape, the 800-DEG C high-temperature oxidation resistance is improved by 30% or above compared with a traditional high-entropy alloy, and the composite material is suitable for large-size components. The method is particularly suitable for manufacturing high-performance key components in the fields of aerospace, national defense and military industry and the like.

Presently provided are a method and a system for pulse electromagnetic field (PEMF) and decompression therapy. The system has a treatment table or treatment chair configured and disposed to hold a first body part of a patient. A decompression harness is configured and disposed to hold a second body part of the patient, wherein at least one joint of the patient is disposed between the first body part and the second body part. The decompression harness is configured to transfer a tensional force on the at least one joint of the patient and at least one PEMF treatment module is disposed with the decompression harness and proximate the at least one joint of the patient.

An electronic patch, for stimulating tissue healing at a target site, is flexible enough to generally conform to a body surface adjacent to the target site, and includes a battery or an arrangement of multiple batteries less than 5 mm thick; a capacitor connected durectly with a coil in series; and pulse generating circuitry, powered by the battery or batteries. The circuitry repeatedly changes the voltage across the capacitor and coil, to produce pulses of current in the coil. The current produces a pulsed electromagnetic field at the target site for stimulating tissue healing, most of the electromagnetic field energy of each pulse being converted into electrostatic energy of the capacitor at the end of the pulse and back into electromagnetic field energy of the next pulse.

A system is provided for use with a subject suffering from cancer that includes one or more primary or metastatic solid tumors. The system includes nanoparticles including a magnetic metallic core and a phase-change material (PCM) that surrounds the magnetic metallic core and is configured to absorb latent heat of fusion by undergoing a phase change that occurs at a phase-change temperature of 42-80 degrees C. A radiofrequency (RF) transmitter is configured to transmit energy, in a pulse train alternating between high power and low power at a pulse frequency of 1 Hz-5 Hz, to at least a portion of the subject's body, such so that the nanoparticles are heated to the phase-change temperature of the PCM, and store energy from the pulse train in the PCM as latent heat of fusion. Other embodiments are also described.

1. The name of the product of this design: stimulation coil. 2. Purpose of the product with this appearance design: to be used in conjunction with a pulsed magnetic field stimulator to perform transcranial magnetic stimulation to generate an alternating pulsed electromagnetic field. 3. The design key point of this appearance design product lies in the shape of the product. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The telemedicine system includes a gateway for transmitting monitoring information including a stimulation signal and a biosignal corresponding to the stimulation signal to a cloud; and a server for extracting the stimulation signal and the biosignal from the transmitted monitoring information, providing the extracted stimulation signal and biosignal as inputs of a pre-stored artificial intelligence machine learning algorithm-based stimulation control model, regenerating the biosignal as an output of the stimulation control model into a stimulation signal to be regulated for the balance between sympathetic and parasympathetic nerves, and feeding back the regenerated stimulation signal to a personalized vagus nerve stimulation and pulse electromagnetic field treatment device.

The invention relates to the technical field of intelligent physiotherapy, and provides an intelligent fascia physiotherapy instrument based on multi-modal bioelectric pulse, which comprises a four-diagnosis data acquisition module, an AI control center and a multi-modal physiotherapy module. The four-diagnosis data acquisition module is integrated with tongue picture, pulse picture, face and voice information acquisition units and is used for acquiring digital images of tongue pictures, pulse waveform data, user face static images and voice information for acoustic analysis, wherein the pulse waveform data and the user face static images are acquired by applying variable pressure by a linear voice coil motor under different pressure levels; the AI control center processes the collected information into quantitative feature vectors, identifies traditional Chinese medicine syndromes based on a random forest classifier and generates a multi-parameter physiotherapy control instruction; the multi-mode physical therapy module integrates four physical therapy modes of a pulse electromagnetic field, intermediate frequency bioelectricity, far infrared radiation and physical therapy ultrasound for collaborative output. The technical problems that in the prior art, physical therapy equipment is single in function and lacks multi-mode cooperation, and physical therapy parameters cannot be automatically matched according to biological information are solved.

A bioelectric therapy system includes a pulsed electromagnetic field module for tissue conditioning and, in some embodiments, a grounding interface configured to electrically couple a subject to a ground reference; a bioelectric stimulation module configured to deliver a regulated, current-limited stimulation signal in a selected low-voltage range via a practitioner-assisted conduction path; and an analyzer configured to acquire measurable biophysical signals to generate assessment data representing physiological parameters. A control unit coordinates a protocol including conditioning, grounding, and stimulation, modifies at least one stimulation parameter based on assessment data or a monitored electrical characteristic, and generates a health assessment report (e.g., a color-coded assessment report) for longitudinal tracking.

The invention belongs to the technical field of cell culture, and discloses a low-frequency pulse electromagnetic field carbon dioxide constant-temperature cell culture box which comprises a culture box body, a Helmholtz coil is connected in the culture box body, and the culture box body is connected with a supporting assembly; the supporting assembly is slidably connected with a storage plate. The storage plate is located between two coils of the Helmholtz coil, and the storage plate is used for placing a culture dish; a low-frequency pulse electromagnetic field generator and an oscilloscope are integrated on the upper portion of the incubator body, and the Helmholtz coil is connected to a control panel on the upper portion of the incubator body through an internal wire. The problems that an existing cell culture box is easily infected by bacteria and fungi due to repeated cell transfer, the time for irradiating a cell culture dish by an electromagnetic field cannot be accurately controlled, and a large amount of manpower and material resources are consumed due to repeated parameter modification, cell culture dish movement and cable connection are solved.

This invention relates to the field of electromagnetic field control technology, specifically to a control system for pulsed electromagnetic fields used in the repair of peripheral nerve injuries. The system acquires the action potential voltage amplitude of each spatial node within the coil's coverage area, calculates the pre-stimulation conduction blockage coefficient based on the voltage distribution and time delay correlation of adjacent nodes, identifies blockage nodes, determines the principal normal direction of the blockage region through principal component analysis, and generates a theoretical output current value by combining the coil's projected area in that direction with the blockage coefficient. Subsequently, a low-frequency test pulse is applied, the post-stimulation conduction blockage coefficient is acquired, and a stimulation intensity correction coefficient is calculated. Finally, the corrected actual output intensity is used as the execution parameter for the next round of test pulses, forming a closed-loop adaptive control. This invention overcomes the problem that traditional uniform stimulation parameters cannot match the electrophysiological heterogeneity of nerve injury regions, achieving spatially precise and functionally adaptable electromagnetic control.

The present invention relates to a magnetic field generation unit as a core member for treatment in a plurality of medical devices using a pulsed electromagnetic field, and relates to a driving method comprising: a magnetic field generation module provided with inner and outer plates to which a ferromagnetic material is applied in order to maximize the attractive force and repulsive force between two or more coil electromagnets and the electromagnets; the magnetic field generating modules are reset in a horizontal or vertical space in a manner of being aligned with the central axis, and the magnetic force is transmitted to a long distance with low power through the attractive force or repulsive force between the magnetic field generating modules on the other side.

The present invention provides a non-drug cardio-cerebrovascular disease therapeutic apparatus. A waveform diagram of a pulse current for generating a pulse electromagnetic field includes four characteristic bands in a cycle range of 360° and reciprocates circularly: an abrupt-rising band T1 where a current intensity I(t) abruptly rises, wherein a highest value thereof is slightly lower than a maximum value Imax of an output current; a first slow-rising band T2 where the current intensity I(t) slowly rises to the maximum value Imax; an abrupt-decreasing band T3 where the current intensity I(t) abruptly decreases, wherein a minimum value Imin thereof is slightly higher than a minimum value (Imin) of the output current; and a slow-decreasing band T4 where the current intensity I(t) slowly decreases to the minimum value (Imin). The non-drug cardio-cerebrovascular disease therapeutic apparatus provided by the present invention can significantly improve and treat cardio-cerebrovascular diseases and achieve obvious effects.

The disclosure relates to a system comprising a pulsed electromagnetic field (EMF) device configured to generate an EMF pulse, and a second device. The second device comprises a coil loop and a light generating unit electrically coupled to the coil loop. The coil loop is configured to induce a current in response to the EMF pulse. The light generating unit is arranged to receive at least some of the induced current and emit a light pulse having an intensity proportional to the received current.

A pulse electromagnetic protection circuit that simulates biological evolution is composed of an adder, an inverter, a signal node, a follower and other circuits, which constitute a signal node set with the amplification factor of the adder and the follower. The operation of the biological evolution circuit is that each signal node can survive only when the state is greater than 0, otherwise it will become extinct. The follower is composed of a resistor and an ideal operational amplifier, the inverting amplifier is composed of a resistor and an ideal operational amplifier, and the adder is composed of a resistor, an amplifier, and a diode. The function of the diode is to realize the positive state of the signal node to ensure the survival of the circuit. The benefits of this circuit are that (1) when there is strong environmental pulse electromagnetic field interference, the circuit can protect the circuit from electromagnetic interference and work normally; (2) the circuit is simple, convenient, inexpensive, adaptive, and easy to implement.

The utility model relates to a multifunctional eye massage device based on a PEMF technology. The multifunctional eye massage device comprises an MCU module; the power supply module is electrically connected with the MCU module and is used for supplying power to the MCU module; the PEMF function module is electrically connected with the MCU module, is controlled by the MCU module to generate a pulse electromagnetic field through low-frequency pulse current, and is used for performing PEMF action on the action area; the hot compress function module is electrically connected with the MCU module, is controlled by the MCU module to heat and is used for performing constant-temperature hot compress on the acting area; the air pressure function module is electrically connected with the MCU module and is controlled by the MCU module to perform air pressure massage on the acting area; and the vibration function module is electrically connected with the MCU module and is controlled by the MCU module to perform vibration massage on the acting area.

The invention discloses a method for improving corrosion resistance of a welding seam of a titanium alloy laser welding part through a pulse electromagnetic field. The method comprises the steps that a TC4 titanium alloy welding part to be treated is clamped through an electromagnetic treatment clamp; fixing the electromagnetic treatment clamp for clamping the TC4 titanium alloy welding part in an electromagnetic treatment device; setting a pulse electric field parameter and an electromagnetic coupling parameter of the electromagnetic processing device; based on the set pulse electric field parameters, a pulse electric field with the waveform being a square wave is independently applied to the TC4 titanium alloy welding part; and S4, based on the set electromagnetic coupling parameters, a pulsed electric field and a pulsed magnetic field with the waveform being triangular waves are applied to the TC4 titanium alloy welding part subjected to pulsed electric field treatment in the step S4 at the same time. The method directly treats the weld joint area, has the characteristics of high efficiency, energy conservation and environmental protection, and obviously improves the corrosion resistance of the weld joint, prolongs the service life of a welded part and keeps the simplicity and economy of the treatment process by optimizing the microstructure and component distribution of the weld joint.

The invention discloses an experimental method for researching the influence of a pulse electromagnetic field on MC3T3-E1, and relates to the technical field of biomedical engineering. Comprising the following steps: S1, culturing cells; s11, preparation of an MC3T3-E1 cell is carried out; s12, carrying out cell passage; s2, pulse electromagnetic field treatment; s21, setting a conventional culture group and a pulse electromagnetic stimulation group, taking a third generation of MC3T3-E1 cells, rinsing the MC3T3-E1 cells twice with a PBS solution free of calcium and magnesium ions, and counting the MC3T3-E1 cells after the MC3T3-E1 cells are prepared into a cell suspension; respectively inoculating into 25ml cell culture flasks and dividing into three groups: a conventional culture group, a conventional culture and pulse electromagnetic stimulation applying group and a conventional culture and pulse electromagnetic stimulation applying group. The invention provides an important theoretical basis for treating osteoporosis by clinically applying the PEMFs; the potential molecular mechanism of PEMFs is disclosed from the perspective of epigenetics methylation regulation.

This application discloses a dental appliance, comprising: an appliance body, a power module, a sliding limiting structure, and a pulsed electromagnetic field module. The appliance body is used to correct teeth in the oral cavity and includes a receiving slot and a receiving drawer detachably connected to the receiving slot. The power module is housed in the receiving drawer and is detachably attached to the appliance body along with the receiving drawer; the power module provides electrical energy. The sliding limiting structure is disposed on the appliance body in a horizontal or vertical direction and can be positioned opposite an auxiliary position of the teeth being corrected. The pulsed electromagnetic field module is disposed on the sliding limiting structure and connected to the power module to receive electrical energy provided by the power module. The pulsed electromagnetic field module slides with the sliding limiting structure to a target position opposite to the auxiliary position and generates magnetic induction intensity at the target position relative to the auxiliary position of the teeth being corrected.

The invention is suitable for the field of health physiotherapy rehabilitation, and provides an intelligent PEMF system and device with a built-in midnight-noon ebb-flow function. In the embodiment, for a user needing PEMF treatment, the physical sign or disease information of the user can be firstly collected, and then the treatment scheme of the user is generated in combination with the midnight-noon ebb-flow data and the basic data stored in the midnight-noon ebb-flow expert database module; then the PEMF energy generation and projection module generates a pulse electromagnetic field according to pulse parameters in the treatment scheme, and the PEMF intelligent control module starts the corresponding coil array according to the starting time and sequence of the coil array in the treatment scheme, so that the pulse electromagnetic field can be projected to the corresponding acupuncture point according to the treatment scheme. Due to the fact that the dynamic law of the midnight-noon ebb-flow is combined when the treatment scheme is generated, personalized PEMF treatment can be implemented in a self-adaptive mode according to the midnight-noon ebb-flow, and the rehabilitation physical therapy effect of the PEMF is enhanced.

The present invention generally relates to methods of producing magnetically induced secretomes with enhanced potency and stability, the methods comprise inter alia, employing polyacrylic acid based polymers, preferably a carbomer, to form a collapsible cell-encapsulating scaffold and dispersing donor cells within said scaffold prior to induction via a directionally-specific pulsing electromagnetic field (PEMF), or dispersing said donor cells in a "collapsed" polyacrylic acid based polymer scaffold prior to the PEMF induction. Also provided are the improved conditioned media thereof, suitable for use in medical and commercial applications.

A system is provided for use with a subject suffering from cancer that includes one or more primary or metastatic solid tumors. The system includes nanoparticles including a magnetic metallic core and a phase-change material (PCM) that surrounds the magnetic metallic core and is configured to absorb latent heat of fusion by undergoing a phase change that occurs at a phase-change temperature of 42-80 degrees C. A radiofrequency (RF) transmitter is configured to transmit energy, in a pulse train alternating between high power and low power at a pulse frequency of 1 Hz-5 Hz, to at least a portion of the subject's body, such so that the nanoparticles are heated to the phase-change temperature of the PCM, and store energy from the pulse train in the PCM as latent heat of fusion. Other embodiments are also described.

The invention discloses a composite machining system and method for tube plate connection reinforcement based on a pulse electromagnetic field, and belongs to the technical field of metal material plastic machining and high-performance component manufacturing. The method comprises the following steps: penetrating a heat transfer tube into a high-strength steel tube plate with a surfacing layer; the solenoid coil discharges to generate a pulsed magnetic field, and the heat transfer tube is driven by Lorentz force to deform at high speed and be in tight expanded connection with the surfacing layer; then welding and sealing; and finally, electromagnetic strengthening is carried out on the joint through secondary discharge of the same coil, and the microstructure and the stress state are improved. The system for implementing the method comprises a pulse power source, a solenoid coil, a tool clamp and a process integrated controller, wherein the controller is used for accurately controlling the discharge time sequence and energy. By means of electromagnetic expanded connection and reinforced combined machining, the joint surface quality and the joint performance are remarkably improved, the technology is efficient and clean, the equipment reuse rate is high, and the engineering application value is prominent.

Described herein are high-power pulsed electromagnetic field (PEMF) applicator systems. The systems can comprise a base housing including a controller configured to generate a low-power control signal and one or more applicators coupled to the base. Each applicator can include a drive circuitry comprising a generator configured to receive the low-power control signal and to produce, in the applicator, a high-power pulsed electromagnetic field signal based on the low-power control signal. The high-power pulsed electromagnetic field signal can has a power of greater than 40 W. Each applicator can further include a coil circuit configured to emit the high-power pulsed electromagnetic field signal, and an electromagnetic energy shield disposed between the drive circuitry and the coil circuit.