41 results about "Pressure pain" patented technology

The invention provides a preparation method of rhizoma polygonati. The preparation method comprises the following steps: (1) taking a rhizoma polygonati raw medicinal material, adding black bean juice, stirring uniformly, and performing covered moistening until the medicinal material is completely fermented; (2) taking the medicinal material after covered moistening in the step (1), performing high-pressure steaming for 1-3 times and 1-6 hours a time, wherein the temperature of the high-pressure steaming is 110-130 DEG C and the pressure is 0.048-0.172Mpa; and (3) after steaming, taking out the medicine, and drying to obtain a prepared product. The rhizoma polygonati prepared by the method provided by the invention is equivalent to even better than the rhizoma polygonati prepared by a conventional nine-steaming and nine-preparation process; meanwhile, the preparation process is simple, the production time can be shortened, human and material resources can be saved, clinical needs can be met, the conventional preparation process is inherited and promoted, and the preparation method provided by the invention has a good industrial application prospect.

The invention discloses a multi-stage filleted high-pressure anvil and relates to exploration of synthesizing preparation tools for novel superhard materials such as diamond, cubic boron nitride and products thereof, and novel materials which cannot be prepared at normal pressure, and belongs to the technical field of ultra-high pressure. The top of the multi-stage filleted high-pressure anvil has a multi-stage platform structure with fillets; the bottom of the multi-stage filleted high-pressure anvil is a column with fillets; the transition between the top and the bottom is realized by a symmetrical curved surface or a fan-shaped bevel; and the high-pressure anvil is made of steel, hard alloy, a diamond sintered body, a cubic boron nitride sintered body or natural diamond and other high-hardness materials. The defects of structural design of corners and a first-stage platform of the conventional anvil are overcome; the stress concentration effect of the anvil can be reduced; the service life of the anvil can be prolonged; the cavity pressure of hundreds of thousands to millions of atmosphere pressures can be obtained; and the multi-stage filleted high-pressure anvil can be widely applied to an anvil device, a multi-surface ejecting high-pressure device and a multi-stage boosting device, and can meet research requirements of high-pressure physics and high-pressure biology on a matter system at high temperature and high pressure.

The invention relates to a human body pressure pain point simulation device, which is a common pressure pain point positioning model used for western medical examination. The human body pressure pain point simulation device consists of a human body pressure pain point simulation man, a computer, a display and a voice unit, wherein accurate positions of human body common pressure pain points are distributed on the human body pressure pain point simulation man, pressure sensors are arranged on the human body pressure pain point simulation man, and a storage unit of the computer stores the operation software program of the device, the position distribution of the human body pressure pain points, information of diseases related to the common pressure pain points and evaluation mark information of answering the correctness of the information. The device can make learners correctly find the pressure pain points, can simultaneously give out relevant diseases, so the learners can find the pressure pain points on the human body pressure pain point simulation man, the correctness is prompted through voice and is displayed through a display screen, and and corresponding evaluation marks are given out.. The invention can become a novel teaching instrument of medical colleges and universities.

The present invention proposes a safety valve self-inspection method, system and anesthesia machine. The method includes the following steps of closing the gas outlet, opening the pressure sensor, and opening the intake valve; detecting the air pressure and recording the air pressure value P0; delaying for t seconds Finally, detect the air pressure value Pt; make a judgment, if Pt=P0, stop pressurizing, and record the final pressure value Pt. The invention enables the medical equipment of the respiratory system with the ventilation safety valve device to automatically detect the opening threshold of the safety valve before each use, is simple to operate and easy to implement, and simultaneously improves the safety of the medical equipment.

A bandage and method for vital bleaching of human skin discolored as a result of bruising (ecchymosis) provides transdermal delivery of hydrogen peroxide as a bleaching agent in gel or other form. The bandages provide delivery and application by waterproof and light-proof strips and pads carrying hydrogen peroxide in sufficient concentration for safe oxidation of bruised tissue with resultant eradication of visible discoloration, and amelioration of associated tenderness.

The invention relates to external auditory canal silencing ear plugs, which comprise sound reflecting plates, sound piezoelectric ceramic groups, acoustic resistance sheets and silencing bodies, wherein the silencing bodies in the silencing ear plugs have T-shaped structures and are fixed on ears by clamping external auditory canals, so that pressure pain is not caused even when the ear plugs are worn for a long time; small ventilation holes in the sound reflecting plates, metallization ventilation holes of the sound piezoelectric ceramic groups, ventilation holes on the acoustic resistance sheets and through holes on the silencing bodies are connected with one another to form a communicated bent channel, so that external auditory canals are communicated with the outside and do not become damp even when the ear plugs are worn for a long time; the sound piezoelectric ceramic groups refer to two sound piezoelectric ceramics with different resonant frequencies; and an anode and a cathode produced by the sound piezoelectric ceramics are connected with each other through the metallization ventilation holes, so that energy produced by sound waves can be well eliminated.

Disclosed herein is a brake system capable of reducing periodic pressure pulsation generated by operation of a pump. The brake system includes a damper member provided with a cylinder having a step portion and a piston to reciprocate between the cylinder and the cap. The piston may be prevented from being excessively pushed toward one side of the damper member, and pressure pulsation generated by operation of the pump may be attenuated. Therefore, overall operating noise may be reduced during control the brake and product reliability may be increased.

The invention relates to a frequency conversion centrifugal pump optimal regulating method and system based on pressure pulsation. The frequency conversion centrifugal pump optimal regulating method includes the following steps that S1, all pressure pulsation monitoring points of a frequency conversion centrifugal pump are subjected to data collection; S2, the variable required in phase position correlation analysis is calculated; and S3, the working condition of the frequency conversion centrifugal pump can be adjusted through phase position correlation analysis. According to the frequency conversion centrifugal pump optimal regulating method and system based on pressure pulsation, only a pressure pulsation sensor needs to be arranged on the inlet section or the outlet section of the pump, instable flow with rotational components inside the pump can be judged easily on the premise of not damaging the pump, a guiding function is provided for optimal regulation of the frequency conversion pump, and power minimum is not used as the optimizing index of frequency conversion pump regulation any more. By adoption of the method, a guarantee can be provided for the efficiency and service life of the pump as well as safe and stable operation of the whole system.

Methods of enhancing fracturing stimulation in subterranean formations using in situ foam generation and pressure pulsing including providing a jetting fluid comprising an aqueous base fluid; providing a fracturing fluid comprising an aqueous base fluid, a gelling agent, a proppant agent, a gas generating chemical, and a gas activator; introducing the jetting fluid into a subterranean formation to create or enhance at least one fracture therein; introducing the fracturing fluid into the at least one fracture; applying intermittent pressure pulsing to the fracturing fluid to extend the at least one fracture.

The invention belongs to the field of compressors and discloses a method of acquiring pressure pulsation of a valve cavity of a reciprocating type piston compressor. The method comprises the followingsteps: establishing an ordinary differential equation set by means of a compressor working process equation, a valve block kinematic equation and a valve cavity pressure pulsation equation; and solving the equation set to acquire a time-dependent numerical solution of the pressures of suction and exhaust valve cavities. A mathematical model of the compressor working process is established on a theoretical basis of an energy conservation law and a mass conservation law of a variable mass thermodynamic system and an ideal gas state equation and a volumetric equation, so that the time and the test cost can be saved; by comprehensively considering the compressor working process, the motion law of an air valve and mutual effect between pressure pulsation in the suction and exhaust valve cavities and a pipe system, the valve cavity pressure pulsation acquiring method is higher in precision and is closer to the actual condition. In addition, the analytical method for acquiring the valve cavity pressure pulsation can carry out optimized analysis on compressor parameters, valve block parameters, valve cavity parameters and pipeline parameters to control the lowest pressure pulsation.

The invention discloses a 3D pulse electro-therapeutic apparatus circuit which comprises a power supply module and an output module. The output end of the power supply module is sequentially connected with a control module, a constant-current module, an amplifying module and an oscillation module, and the output end of an electro-therapeutic apparatus is a 3D module. The 3D pulse electro-therapeutic apparatus circuit has the advantages of having the 3D function, due to the fact that N sets of independent electrode control terminals are connected to the output of the apparatus, energized time of each set of the electrodes is controlled freely, the controlling mode comprises sequential circulating from left to right or from right to left or from inside to outside or from outside to inside, and multiple types of 3D special effects such as running water or horse running are achieved. Due to the fact that human has sensory illusion, a patient can sense the flowing feeling of current on the human body, the feeling is like real person massage and knocking and the patient feels like being in a dreamlike environment. The 3D pulse electro-therapeutic apparatus circuit overturns the pressing pain and uncomfortable feeling produced by a traditional electro-therapeutic apparatus during human body partial treatment, the multiple sets of electrodes sequentially conduct the 3D therapy, implementation range is wide, he treatment effect is significant, penetration is strong, and the 3D pulse electro-therapeutic apparatus circuit is unique in treatment, protects health of the patient and has the health maintenance effect.

The invention discloses a pitot tube device for measuring pressure pulsation of a hypersonic wind tunnel, belonging to the field of fluid mechanics. The pitot tube device comprises a main body and a sensor, wherein the sensor is positioned in the hollow inner cavity of the main body, the main body is made of a porous metal material; the porous material is provided with micropore gaps, and can partially absorb disturbance waves such as sound waves, vortex waves and entropy waves without damaging a flow field structure. When the pitot tube device is used for measuring the pressure pulsation of the hypersonic wind tunnel, the main body made of the porous metal material absorbs the flow field disturbance and weakens the reflection oscillation of the flow field disturbance between a shock surface and the front end surface of the pitot tube device, and further improves the accuracy of the hypersonic wind tunnel pressure pulsation measurement. Therefore, the technical problem that when the pitot tube in the prior art is used for measuring the pressure pulsation of the hypersonic wind tunnel, a relatively large error exists is solved.

The invention discloses a pressurized rollover prevention device for sharp turning or tire burst of an automobile. The pressurized rollover prevention device is characterized in that a carriage is in bolt connection with a pressure plate of a pressurized rollover prevention chassis; when an automobile is turning a corner, the gravitational center shifts, and both sides of the automobile suffer different pressures; the side with excessive pressure pushes a fluid inside a pressure regulating device to the side with smaller pressure, so as to balance the pressures on both sides of the automobile; in case of sharp turning, sharp turning due to emergency of encountering a barrier or an accident, or a tire burst during high-speed driving, the side with excessive pressure will be quickly adjusted by the pressure regulating device, the fluid inside the pressure regulating device will flow to the place with smaller pressure. The pressurized rollover prevention device has an excellent flexibility and can ensure the driving stability of the automobile to the greatest extent in case of sharp turning, sharp turning due to emergency of encountering a barrier or an accident, or a tire burst during high-speed driving.

A trigger point treatment system for treating a patient, includes a cart, including a display; a trigger point scanning device with a scanning probe, and a trigger point massage therapy device, including a pressure point tip, a pressure sensor component, and an actual pressure indicator. A method of trigger point treatment includes scanning for myofascial trigger points, including locating, mapping, and marking trigger points; measuring a pressure pain threshold; applying a massage treatment; and optionally applying an injection treatment.

The invention discloses a low drop-out transmission valve sealing control method and a low drop-out transmission valve. According to the method, a transmission valve arranged between two adjacent working boxes and used for enabling the working boxes to be connected or disconnected is arranged, a first pressure sensor used for measuring first pressure P1 is arranged in the first working box, a second pressure sensor used for measuring second pressure P2 is arranged in the second working box, a third pressure sensor used for measuring third pressure P0 is arranged in the transmission valve, and a control device is arranged for controlling the state of the third pressure P0 according to the state of the first pressure P1 and the second pressure P2; when P0 is larger than the maximum value (please see the formula in the specification) of P1 and P2, the third pressure P0 is kept unchanged, and a motor is shut off. By the adoption of the low drop-out transmission valve sealing control method and the low drop-out transmission valve, the motor can be protected, and the service life of the motor can be prolonged; meanwhile, the requirement for design of a sealing door opening and closing mechanism can be lowered, and cost can be reduced.

A configuration tool is for a vortex flowmeter having a flowtube, a bluff body positioned in the flowtube for shedding vortices in the fluid, and a pressure sensor configured to obtain a signal indicative of a time-varying fluid pressure having an oscillation associated with the vortices. The configuration tool includes a processor that determines a type of fluid flowing through the flowtube based on the amplitude of the oscillation. The processor sets a fluid-type setting of the vortex meter to match the determined type of fluid. An alarming system for a control system including such a flowmeter includes a processor that assesses a density of a fluid flowing through the flowtube based on the amplitude and compares the assessed density to a fluid density configuration setting. The processor activates an alarm if the difference between the assessed density and the fluid density configuration setting exceeds a threshold.

The invention discloses a knee joint correction auxiliary device which comprises a bandage capable of covering the knee joint and a pressurizing bag for providing pressure for the knee joint. A positioning hole capable of exposing the patella of the knee joint is formed in the center of the bandage, and connecting bands used for fixing the bandage are connected to the two sides of the bandage; thepressurizing bag is connected to the outer surface of the bandage and filled with a filler. The knee joint flexion rehabilitation device has a good effect in rehabilitation treatment of knee joint flexion deformity; by using the device provided by the invention, the patellar femoral joint pressure in the treatment process can be effectively reduced; the pressing pain of the anterior knee area ofthe patient during pressurization is reduced; a patient can adjust the pressurization pressure by increasing or decreasing the number of the pressurization bags, the treatment effect and use comfort of the patient are guaranteed, additional injuries caused by too large pressure are avoided, the patient can recover as soon as possible, meanwhile, the device can guarantee the continuous pressurization correction effect, and secondary injuries such as pressure sores can be effectively avoided.

The invention relates to a die provided with a PLC temperature control device and used for low-pressure pouring and a method. A first temperature sensor and a second temperature sensor are arranged on a second gas pipe and a fourth gas pipe respectively and stretch into the second gas pipe and the fourth gas pipe respectively, a temperature control module is arranged in a PLC, and a first electromagnetic valve and a second electromagnetic valve are arranged on the second gas pipe and the fourth gas pipe respectively and are connected with output ports of the PLC respectively. By means of the structure, the defects that in the prior art, the combination of an upper die and a lower die is not tight, the overall structure is complex, the pouring effect of the upper die and the lower die is difficult to ensure, whether the temperature of the cooling gas exceeds or not is judged through experiences to manually turn off a valve, consequently, the speed is low and efficiency is not high are overcome.