53 results about "Impulse generator" patented technology

There is provided a plasma processing apparatus comprising: a plasma processing chamber; a substrate support disposed in the plasma processing chamber, the substrate support including: a base, a ceramic member disposed on the base and having a substrate support surface and a ring support surface, one more annular members disposed on the ring support surface to surround a substrate on the substrate support surface, first and second central electrodes inserted into the ceramic member, first to fourth vertical connectors inserted into the ceramic member, first and second annular connectors inserted into the ceramic member, and a central heater electrode inserted into the ceramic member; a DC power source electrically connected to an outer region of the first annular connector through the third vertical connector; and a voltage pulse generator electrically connected to an outer region of the second annular connector through the fourth vertical connector.

This invention discloses a high-viscosity heavy oil heat exchanger based on a spin-flow tortuous tube, comprising a shell, tube-side inlet and outlet, and shell-side inlet and outlet; a heat exchange tube bundle connected between the tube-side inlet and outlet, the heat exchange tube bundle being composed of multiple U-shaped spin-flow tortuous tubes arranged side by side; each spin-flow tortuous tube includes a tortuous tube inlet, a spiral guide rib, a tortuous tube outlet, and a vibration-damping support ring, the spiral guide rib being disposed on the inner wall of the vibration-damping support ring, the pitch of the spiral guide rib increasing linearly along the heavy oil flow direction; multiple baffles are uniformly arranged circumferentially on the heat exchange tube bundle, each baffle having multiple tube holes, the spin-flow tortuous tubes passing through the tube holes of the baffles and fitting with the clearance; an online cleaning device is installed on the shell, the online cleaning device monitoring the scaling condition through an acoustic wave monitor, and the control unit controlling a pulse generator to emit pulse waves to clean the scaling. This invention can achieve efficient and stable heat exchange of high-viscosity heavy oil under low energy consumption conditions, while simultaneously solving the performance degradation problem caused by scaling through an intelligent cleaning system.

Ultrasound emitting device for applying selective treatments to hypodermic tissue (adipose and connective tissue) in rejuvenation and / or body contouring processes, comprising an electrical pulse generator, an ultrasonic transducer (3), an electronic control unit (6) equipped with specific software that controls the frequency, voltage, and duty cycle of the pulse generator, and application means (4) for orienting and directing the acoustic field onto the area to be treated on the patient / user, wherein said transducer emits in each pulse an acoustic field with an energy density not exceeding 0.7W / cm2 and a minimum emission duration of 100ms. Preferably, the transducer emits either at a single frequency or in a frequency sweep, in a frequency range between 185 kHz and 333 kHz, and even more preferably at 244 kHz.

The application belongs to the technical field of medical devices, and particularly relates to a negative pressure wound dressing system based on an alternating pulse electric field. The system comprises a dressing system main controller, a directional electric field dressing and a heart rate monitoring sensor. The main controller comprises an alternating pulse generator and two pulse current circuits, which are connected to a first electrode and a second electrode on the dressing respectively. The core technology is that the system controls the alternating pulse generator to periodically switch the current direction between the two pulse current circuits according to the heart rate value measured by the heart rate monitoring sensor, so as to dynamically change the application direction of the alternating pulse electric field applied to the wound. The system can realize adaptive switching of the electric field direction according to the physiological state (such as rest / activity) of the patient, and can optionally integrate a negative pressure drainage function. The dressing system provided by the application can provide dynamic electric stimulation more in line with the individual physiological rhythm, and aims to realize intelligent and personalized wound treatment to promote tissue repair.

A lead for an implantable medical device (IMD) includes an electrode having a plurality of brick segments that are discrete and mechanically connected to one another in a line. The brick segments are electrically conductive and electrically connected to one another. The brick segments are configured to be powered by a pulse generator of the IMD to deliver high-voltage shocks for defibrillation therapy.

The present application relates to an implantable electrical stimulation system and a control method. The system comprises an electrode assembly, the electrode assembly comprising a stress release section for buffering stress transmitted from the tail end of the electrode assembly and at least one contact; the stimulation section and the stress release section are connected according to a bending angle. The system further comprises a processing unit configured to, based on the measurement of the activity in the brain region of the patient, control the pulse generator to generate stimulation pulses in a first time sequence; in a second time sequence, update the electrical stimulation scheme to a second stimulation parameter set based on the degree of coincidence between the feedback information of the activity in the brain region of the patient and the expected activity information; in a third time sequence, control the at least one contact remaining to the patient to electrically stimulate the patient to regulate the state of the patient to a normal state in the third stimulation parameter set. The present application combines the electrode structure conforming to the physiological characteristics and the adaptive pulse control.

This invention discloses a high-precision anti-glare panel deformation resistance testing device, comprising an observation module, a displacement driving module, a measurement feedback module, a support and leveling module, and a testing module. The observation module includes a high-magnification microscope with a crosshair and a metal support for positioning and measuring the surface deformation of the anti-glare panel. The displacement driving module uses a dual-axis ball screw slide to drive the metal panel movement and is controlled by a pulse generator to achieve precise microscope positioning. The measurement feedback module records displacement data in real time using a magnetic scale mounted on the slide. The support and leveling module includes a housing and an adjustable leveling mechanism; adjustable leveling bolts adjust the device's horizontal state to improve measurement stability. The testing module applies loads using an electronic tensile testing machine, a traction rope, and pulleys, and guides the force direction to ensure the measurement meets standard requirements. This invention can measure the deformation resistance of anti-glare panels with high precision, improving the stability and repeatability of the test.

This disclosure provides electroporation cartridges for single-use electroporation, as well as electroporation cartridges, electroporation instruments and systems for automated batch processing, and methods of electroporation using these devices and systems. In some embodiments, the electroporation cartridge includes: an electroporation chamber defined by an elongated body; a first electrode at a proximal end; and a second electrode at a distal end of the chamber. The electroporation system of this disclosure includes one or more components including: a pulse generator; a chamber for placing a flow-through or single-use electroporation cartridge; components for storing cells; cooling and precooling mechanisms; a modularly insertable housing having a chamber for holding and arranging the electroporation system and reagent components; one or more pumps for moving samples through the system; and a processor and a controller.

Systems and methods for the efficient use of an implantable pulse generator (IPG) battery are disclosed. A representative system for adjusting an electrical signal of an IPG associated with delivering therapy to a patient comprises a computer readable medium having instructions that cause the IPG to deliver a supply voltage at a first value, adjust the supply voltage from the first value until a threshold break occurs, and, based at least in part of the threshold break, increase the supply voltage from the second value to a third value. As therapy is delivered to the patient, the system iteratively adjusts the supply voltage to approach and reflect a variable minimum voltage needed to provide the requested current to the IPG.

A method for generating electromagnetic waves, includes coupling a transmission line to a direct current (DC) voltage source, the transmission line includes a first conductor, a second conductor and a composite disposed between the first conductor and the second conductor, the composite includes non-linear inclusions comprising one or more of non-linear dielectric and non-linear magnetic inclusions mixed in a matrix material, The DC voltage source has a ground that is coupled to second conductor of the transmission line, the first conductor, the second conductor, and the composite form a capacitor, charging the capacitor in the transmission line by the DC voltage source, generating an electromagnetic wave that generates a microwave burst when quickly discharging the charged capacitor, the capacitor is quickly discharged by a switch disposed after the transmission line that is configured to short the first conductor to the second conductor, thereby eliminating a need for a pulse generator.

This invention discloses an equivalent simulation method for determining the pressure distribution of an oil-immersed current transformer's oil conservator, comprising: preparing an experimental enclosure that can accommodate the oil-immersed current transformer; fixing the oil-immersed current transformer at the center of the experimental enclosure; establishing a coordinate system for the position of the oil-immersed current transformer within the experimental enclosure; determining a fault point coordinate and a determined pressure distribution coordinate on the oil conservator enclosure of the oil-immersed current transformer; setting a pressure sensor at the determined pressure distribution coordinate point; placing the arc generator head of a short-circuit impulse generator at the determined fault point coordinate; filling the experimental enclosure with insulating oil; adjusting the magnitude of the arc energy released by the short-circuit impulse generator; obtaining the pressure signal corresponding to the arc energy magnitude from the pressure sensor; and calculating the actual pressure values ​​borne by the oil conservator enclosure of the current transformer at the pressure distribution points corresponding to different energy magnitudes.

This invention relates to the field of CNC machine tool technology, specifically to a quick-release external pulse handwheel for CNC lathes and its application, which prevents accidental activation. The handwheel includes a magnetic bracket for holding a pulse generator. The magnetic bracket comprises a frame, a movable latch sliding on the outer wall of one end of the frame, a limiting block sliding inside the movable latch, and a lever engaged with the outer wall of the limiting block. This invention, through a linkage mechanism formed by the movable latch, lever, and limiting block within the magnetic bracket, and in conjunction with a pulse generator integrating axis selection neutral locking and enable button status interlocking functions, establishes a multi-layered anti-accidental activation logic: "locked upon installation, usable only when removed from the frame, and wheel cannot be turned in neutral." This eliminates the risk of movement caused by missed steps or accidental activation during operation.

The invention belongs to the field of oil exploitation, and particularly relates to a three-phase flow gathering and transportation simulation system and a method for obtaining flow pattern, pressure and temperature heat gradients. The oil-gas-water three-phase flow gathering and transportation simulation system comprises an oil-gas-water flow control device, a three-phase mixer, a pulse generator, a constant-temperature box, a sensor and a pipeline, the pipeline is arranged in the constant-temperature box, an inlet of the pipeline is connected with an outlet of the pulse generator, and an inlet of the pulse generator is connected with an outlet of the three-phase mixer. An inlet of the three-phase mixer is connected with an oil-gas-water flow control device; the sensor is arranged on the pipeline. According to the device disclosed by the invention, simulation of various working conditions can be realized through cooperation of the oil-gas-water flow control device, the three-phase mixer, the constant-temperature box and the flow pulse generator; meanwhile, the characteristic information of the three-phase flow in simulation of various working conditions can be obtained through the arranged sensor, the characteristic information can be used for equipment model selection and determination of production control parameters, and the advantage of reducing cost is achieved.

The application discloses a flat-plate cascade linear folded pulse generator and belongs to the technical field of pulse power devices, and solves the technical problems of low output index and large volume of the pulse generator. The pulse generator comprises a first flat-plate conductor, a second flat-plate conductor, a third flat-plate conductor, a load and a switch. The first flat-plate conductor, the second flat-plate conductor and the third flat-plate conductor are arranged in parallel, the first flat-plate conductor and the second flat-plate conductor form a first flat-plate line, and the second flat-plate conductor and the third flat-plate conductor form a second flat-plate line. The first flat-plate line and the second flat-plate line are cascaded. The left end of the first flat-plate line is open, and the second flat-plate line is connected with the load and the switch in series. The first flat-plate line and the second flat-plate line are equal in length and equal in characteristic impedance. During operation, the first flat-plate line and the second flat-plate line are charged simultaneously. The application is used for a pulse power generator.

The utility model relates to a kind of quick response wear-resistant mud pulse generator, it is related to well drilling technical field, including upper disc valve, lower disc valve, transmission shaft and pulser shell, upper disc valve is with mud passage, lower disc valve is with pulse sheet, transmission shaft is fixedly connected with two magnetic strips A, pulser shell is fixedly connected with a limit buffer magnetic strip, limit buffer magnetic strip is located between two magnetic strips A, any one magnetic strip A is close to limit buffer magnetic strip and generates magnetic repulsion force;Through magnetic repulsion force, the rigid impact of transmission shaft to pulser shell is reduced.The upper disc valve is with self-cleaning device, when mud passage is blocked, filter screen is forced to prop up, intercepts solid phase particle, after mud passage opens, filter screen is forced to fold, and the solid phase particle on the surface of filter screen is washed away by high-speed flowing mud liquid, and the solid phase particle is discharged from sand discharge groove.Self-cleaning device and sand discharge groove cooperate, effectively intercept solid phase particle and wash it, reduce the wear and tear of upper disc valve and lower disc valve to solid phase particle.

The invention relates to the field of training, specifically to a teaching device for demonstrating the production of electric power by electrolysis using low-cost materials and substances, and can be used in universities and colleges, as well as in research institutions for experimental studies.The device, according to the invention, comprises a first container (1) with water (2), wherein are placed a thermocouple (11) and a second container (3) with a table salt solution (4), in the latter being concentrically placed a steel cylinder (5), an iron wire (6) in the form of a cylindrical spring and a steel rod (7). In the upper part of the iron wire (6) and the steel rod (7) is placed a gas bell (13), to which is connected the first end of a first gas tube (14). The device also comprises a third (15) and a fourth (16) container for water (2), at the same time the fourth container (16) is placed upside down in the third container (15), and in the fourth container (16) are placed the second end of the first gas tube (14) and the first end of the second gas tube (17), the second end of which being led outward and provided with a plug. The device also comprises a first electrical switch (18), a second electrical switch (21), a precision voltmeter (12), a pulse generator (22), a first (24) and a second (26) electronic switches, an inverter (23), an electric battery (27), a capacitor (25), a voltage converter (28) and a battery of galvanic cells (19).

A pulse generator for use with an electroporation system is provided. The pulse generator is configured to be coupled to a catheter including a plurality of electrodes and is configured to generate a waveform to be delivered using at least one of the plurality of electrodes. The waveform includes a pulse train having positive and negative pulses, wherein an average charge over the pulse train is zero.

The application discloses a connecting structure and method of an implantable pulse generator and the pulse generator. The connecting structure is formed between a feedthrough lead and an antenna. The antenna has an antenna lead-out end which is columnar. The diameter of the feedthrough lead is substantially the same as that of the antenna lead-out end. The antenna lead-out end is arranged along the length direction of the feedthrough lead. The head of the antenna lead-out end and the head of the feedthrough lead are respectively provided with a first bending part and a second bending part. The first bending part and the second bending part are hooked and connected through at least one laser spot welding. The application can better overcome the axial and radial tension through the hooking and welding mode, improve the stability of the connection, and reduce the possibility of falling off, thereby solving the problems that the connection between the antenna and the feedthrough lead of the implantable pulse generator is unstable and easy to fall off in the prior art.

This invention provides a highly adaptable pulse generator and turbine power generation system. The system includes: a pulse generator, a bus communication and power supply module, a motor drive control module, a turbine, and a generator. The pulse generator transmits downhole information to the surface according to a predetermined encoding method. The turbine, driven by drilling fluid, rotates the rotor of the generator through magnetic coupling, thereby generating electricity. The generator supplies power to the system. The bus communication and power supply module supplies power to the motor drive control module. The motor drive control module controls the operation of the pulse generator. Using this invention, the system's adaptability can be improved.

This utility model relates to the field of medical devices and provides a meridian acupoint therapy instrument, including an upper shell, a lower shell, and a front plate. The lower shell houses a main unit, which includes a power module, a control circuit, and a pulse generator. The upper shell is snapped onto the upper end of the lower shell. A power interface and multiple wire interfaces are provided at the connection between the upper and lower shells. Each wire interface is electrically connected to two electrode plates via wires. An inner support plate is snapped onto the inner wall of the upper shell. Two receiving slots are formed on the inner support plate, each containing a fixed sponge electrode plate. A cover plate is snapped onto the inner support plate, and two placement slots are formed on the cover plate, each containing a sponge electrode plate. This utility model has the advantages of allowing simultaneous therapy for multiple people, simple operation, compact size, and easy portability, effectively solving the problem of difficulty in treating hairy areas.

This invention discloses an electrode assembly and an implantable medical system. The electrode assembly includes: at least one electrode pad configured to deliver electrical stimulation to a target site within a patient's body; electrode leads including a covering layer and at least one wire bundle encased within the covering layer; one end of each wire bundle connected to one of the electrode pads, and the other end of each wire bundle connected to a pulse generator; and an integrated circuit embedded in the implantation end of the covering layer, connected to the electrode pads and configured to acquire the stimulation current value delivered by the electrode pads. This invention's electrode assembly and implantable medical system can achieve accurate and safe delivery of electrical stimulation to a target site within a patient's body by acquiring stimulation current values ​​in real time.

The utility model discloses a kind of reaction kettle fouling cleaning device, device includes reaction kettle body, annular flush coil pipe being internally arranged, coil pipe support pole of supporting coil pipe, and cleaning liquid pipeline connected to discharge pipe.The flush coil pipe bottom is equipped with two groups of oblique spray ports, respectively directional impact kettle wall and stirring mechanism;Cleaning liquid pipeline integration delivery pump, drain pipe and parallel bypass, bypass configuration pressure pulse generator to generate high-frequency pulse jet flow.Through multi-angle spraying and pulse cleaning synergistic effect, the efficient peeling of reaction kettle inner wall and stirring part fouling is realized.The utility model adopts closed-circuit circulation cleaning, without manual entering kettle, cleaning cycle can be effectively shortened and realize water-saving purpose, while guaranteeing that cleaning waste liquid can be recycled, significantly improve the safety, environmental protection and equipment continuous operation efficiency of calcium hydrogen phosphate production.

The invention relates to the technical field of petroleum and natural gas drilling engineering, in particular to a self-power-generation type rotary valve mud pulse generator, a simulation decoding device and a simulation decoding method. The generator comprises a turbine generator, a control circuit, a brushless direct current motor, a magnetic transmission assembly and a rotary valve mechanism; the turbine generator generates electricity through drilling fluid and supplies power to the control circuit to drive the motor to rotate. The magnetic transmission assembly comprises a magnetic meshing device, a speed reducer and a self-resetting device; the magnetic meshing device realizes non-contact torque transmission through inner and outer magnetic rotors and an isolation sleeve, and isolates a motor cavity from a slurry environment; the self-resetting device drives the rotary valve rotor to automatically reset during power failure through cooperation of permanent magnets on the inner and outer rotating shafts. According to the invention, the functions of self-power-generation driving, reliable dynamic sealing and power-off safe resetting are realized.

The application relates to a medical temperature-controlled pulse high-pressure water flow generating device and relates to the technical field of temperature-controlled high-pressure water flow generating devices. The device comprises a pulse generator, an upper cover shell and a lower cover shell, a water delivery pipe is arranged at the inlet of the pulse generator, an upper limiting pipe is arranged in the upper cover shell, a lower limiting pipe is arranged in the lower cover shell, and a temperature rising table is arranged in the upper limiting pipe and the lower limiting pipe. The clamping assembly, the upper moving table and the lower moving table can clamp and fix water delivery pipes of different specifications, straighten the water delivery pipes in the upper cover shell and the lower cover shell while clamping the water delivery pipes, and flexibly adapt to water delivery pipes of different diameters and different lengths through linkage adjustment of the clamping assembly, the upper moving table and the lower moving table. The inner wall of the water delivery pipe is smooth, the pipe cavity is unobstructed, the solution in the pipe can flow uniformly and stably, the contact area of the solution and the inner wall of the water delivery pipe is uniform, and the uniform heating of the solution is guaranteed.

A TENS device (100) comprises connection port(s) (110, 112, 115) configured to be electrically connected to cymba concha and cavum concha electrodes (220, 230) of a taVNS device (200) The TENS device (100) comprises a pulse generator (140) connected to the connection port(s) (110, 112, 115) and arranged to generate adjustable electrical stimulations pulses to be applied over the cymba concha and cavum concha electrodes (220, 230). A controller (150) of the TENS device (100) is configured to adjust, in response to activation of a user input (120), a stimulation parameter of the adjustable electrical stimulation pulses generated by the pulse generator (140) during a treatment session, store, in a memory (160), treatment information comprising settings of the stimulation parameter, retrieve, in response to activation of the user input (120), the treatment information from the memory (160) and control the pulse generator (140) to generate, during a subsequent treatment session, adjustable electrical stimulation pulses according to the settings of the stimulation parameter comprised in the retrieved treatment information.

A pulse control method and apparatus, an ablation device and system, and a storage medium. The pulse control method comprises: controlling a pulse generator to output a nanosecond pulse sequence and a millisecond pulse sequence, the amplitude of the nanosecond pulse sequence being greater than a preset first threshold voltage, and the amplitude of the millisecond pulse sequence being less than a preset second threshold voltage. The nanosecond pulse sequence having the amplitude greater than the threshold voltage cooperates with the millisecond pulse sequence having the amplitude less than the threshold voltage, such that the effective ablation range can be enlarged, the ablation is more thorough, the muscle contraction amplitude can be effectively reduced, or the muscle contraction probability is reduced.

This invention relates to a rapid calculation method for loop parameters of a high-voltage power supply and utilization experimental device, belonging to the technical field of short-circuit breaking tests for large-capacity high-voltage electrical appliances. The method employs a direct method using the output of an impulse generator to establish the corresponding test loop circuit topology, simplifying it to a single-phase equivalent calculation circuit with the first open pole. Based on this circuit, a third-order circuit equation for the TRV waveform to be solved is established. For the third-order circuit equation of the waveform, engineering simplification conditions are substituted to simplify it into a series discharge solution, yielding simplified and per-unit solutions. The equations for the simplified and per-unit solutions are then dimensionless, reducing their dimensionality. Based on the dimensionless equation of the dimension-reduced waveform, the test voltage, dimensionless parameters, and peak time are substituted sequentially to calculate the initial values ​​of the device loop parameters. This invention can significantly improve the efficiency of short-circuit breaking tests in large-capacity test stations.

A sensing electrode selection algorithm is disclosed for use with an implantable pulse generator having an electrode array. The algorithm automatically selects optimal sensing electrodes in the array to be used with a pre-determined stimulation therapy appropriate for the patient. The algorithm preferably senses stimulation artifacts using different sensing electrodes, and more specifically different sensing electrode pairs as is appropriate when differential sensing is used. The algorithm further preferably senses these stimulation artifacts with the patient placed in two or more postures. The algorithm processes the stimulation artifact features measured at the different sensing electrodes and at the different postures to automatically determine one or more sensing electrode pairs that best distinguishes the two or more postures given the prescribed stimulation therapy.

This disclosure provides electroporation cartridges for single-use electroporation, as well as electroporation cartridges, electroporation instruments and systems for automated batch processing, and methods of electroporation using these devices and systems. In some embodiments, the electroporation cartridge includes: an electroporation chamber defined by an elongated body; a first electrode at a proximal end; and a second electrode at a distal end of the chamber. The electroporation system of this disclosure includes one or more components including: a pulse generator; a chamber for placing a flow-through or single-use electroporation cartridge; components for storing cells; cooling and precooling mechanisms; a modularly insertable housing having a chamber for holding and arranging the electroporation system and reagent components; one or more pumps for moving samples through the system; and a processor and a controller.