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35results about How to "Avoid depth" patented technology

Zero hypocentral distance vertical seismic section compressional-shear wave data depth field corridor stacked section processing method

Geophysical exploration for oil wells, the source from the vertical seismic profile aspect wave data stack depth domain Corridor profile approach is the use of in situ collection of well spacing VSP data, which will all receive points drilling depth of information and hierarchical data with the depth of information, the use of direct wave VSP data travel through and optimization algorithms are highly accurate anti-layer velocity model, the direct wave to the beginning of the reflected wave in the vicinity of the depth and precision homing imaging, further in-depth domain Corridor section and with the superposition of alternative conventional method leveled in the time domain, with corridors and the superposition method, the results can be superimposed for direct comparison with the drilling and seismic data stratified layer identification. More intuitive, but also made full use of VSP data in the depth of information, make geological formation of the earthquake response and drilling, logging data in depth domain direct contrast, a more intuitive geological layer and the relationship between seismic horizon, thereby enabling layer of identification and calibration more reliable.
Owner:BGP OF CHINA NAT GASOLINEEUM CORP

Noninvasive standard registration device applicable to fusion imaging in ultrasonography, CT (computed tomography), MRI (magnetic resonance imaging), PET (positron emission tomography) and the like

ActiveCN102824216AControl non-standardCompensation level errorDiagnosticsSurgeryComputed tomographyNon invasive
The invention provides a noninvasive standard registration device applicable to fusion imaging in ultrasonography, CT (computed tomography), MRI (magnetic resonance imaging), PET (positron emission tomography) and the like. The noninvasive standard registration device comprises a carrier bag, a body surface fixator and at least one frame in geometric plane shapes. The carrier bag is rectangular and is fully filled with liquid. The geometric plane shaped frame is disposed in the carrier bag and is constantly perpendicular to the horizontal plane. Spacing more than 0.1cm is reserved between the geometric plane shaped frame and the inner wall of the carrier bag. By the noninvasive standard registration device, the geometric plane shaped frame in the ultrasonic images can be kept in the same standard cross-section direction as the corresponding geometric plane shaped frames in CT, MRI or other imaging methods, and non-regularity of universality and cross section of an ultrasonic probe are controlled. The speed in fusion registration of ultrasonography, CT, MRI or PET images can be greatly increased by using the noninvasive standard registration device while precision registration is guaranteed, and the noninvasive standard registration device is widely applicable and has broad application prospect.
Owner:周翔

Vertical recovery method for carrier rocket base stage by using vernier engines

ActiveCN112963269AThe switch is flexible and controllableAvoid depthRocket engine plantsAutomotive engineeringRocket
The invention discloses a vertical recovery method for a carrier rocket base stage by using vernier engines. The vertical recovery method comprises the steps that the carrier rocket base stage is provided and powered by a combined engine; in the rising stage of a carrier rocket, a main engine provides main flight power, and the vernier engines provide posture control power; after the carrier rocket base stage is separated, the main engine is shut down and descends after flying to the highest point, and the vernier engines provide deceleration power; when the carrier rocket base stage enters a dense atmosphere area, the vernier engines are shut down; and when the carrier rocket base stage descends to the low altitude, the vernier engines are started to provide landing deceleration power. According to the vertical recovery method, the carrier rocket base stage can be vertically recovered, so that repeated use of the carrier rocket base stage is realized, and the utilization efficiency is improved.
Owner:NO 63921 UNIT OF PLA

Method and device for multi-user transmission diversity

The present invention discloses a multi-user transmit diversity method and a device; the present invention is used for solving the multi-antenna transmission time delay which can not be regulated in time according to the actual channel situation and further solving the problems that the channel estimation surpasses the effective range and multi-address interference caused by improper transmission time delay collocation; the method comprises that the channel impulse response effective window lengths of all users on every antenna are gathered; the transmission time delay of every antenna is confirmed based on the channel impulse response effective window length; and every antenna transmits the signal at the time corresponding to the transmission time delay of every antenna. The present invention realizes the dynamic collocation of multi-antenna transmission delay according to the actuation situation of the channel and avoids the problem of channel estimation surpassing the effective range and adding multi-address interference; moreover, the system function is promoted.
Owner:DATANG MOBILE COMM EQUIP CO LTD

Dewatering well pump drainage automatic control system

The invention discloses a dewatering well pump drainage automatic control system and relates to the technical field of building construction. The key points of the technical scheme are as follows: thedewatering well pump drainage automatic control system comprises a plurality of single well dewatering well control systems, a regional dewatering well centralized sub-control system and a dewateringmaster control system, wherein the single well dewatering well control systems are used for carrying out dewatering operation, monitoring the underground water level elevation, water level decreasingamplitude and the water yield of the dewatering well; the regional dewatering well centralized sub-control system is used for controlling the single well dewatering well control systems and receivingthe signals monitored by the single well dewatering well control systems; the dewatering master control system is used for receiving and analyzing signals of the underground water level elevation, water level decreasing amplitude and the water yield of all dewatering wells, and displaying the underground water level elevation, water level decreasing amplitude and the water yield of each dewatering well on the site; and the dewatering master control system controls to start or stop the dewatering operation of the single well dewatering well control systems according to the analyzing result. The dewatering well pump drainage automatic control system avoids the situation that a foundation pit is insufficient in dewatering and drainage depth and dewatering of the foundation fit is not in time.
Owner:武汉武建机械施工有限公司

Multiple head small diameter long screw drilling wall forming machine

The present invention relates to a multithread minor diameter long auger drilling wall forming machine. Said invention adopts portal shaped piledriver side-by-side set at least auger stems, lower end set drill, top connected with spacer, spacer slip connection with portal shaped piledriver, spacer set rotating power unit, auger stem connected with rotating power unit, auger stem being hollow in middle part, connected with concrete delivery pipe, guideway set below the chassis. Said invention solves uneven soil stirring, weak intensity, inefficiency etc shortage.
Owner:HOHAI UNIV

Super capacitor cycle life test device and test method

The invention discloses a super capacitor cycle life test device and test method. The device comprises two drivers which are connected through a common bus, wherein the drivers are powered by a powergrid through starting a circuit breaker and a contactor, the tested super capacitor is used as a backup power supply of the drivers and is respectively connected to the two drivers, and a time relay controls the contactor to supplement the super capacitor which is not fully charged. The test method is carried out in a super capacitor mutual charging mode, there is no discharge load, the energy consumption is extremely low in a long-time cycle life test, and the cost is low. In addition, a driver PMM bus is used as transfer in the charging and discharging processes, the current pulse width consistency is good, adverse factors of unstable temperature rise, non-uniform discharge depth and the like in the traditional method and device are well avoided, and the test accuracy is greatly improved.
Owner:RENERGY ELECTRIC TIANJIN

Manufacturing method of parts of optical gratings of DFB laser

The invention provides a manufacturing method of parts of optical gratings of a DFB laser. The method comprises following steps of successively growing an N-type InP buffering layer, a multi-quantum well structure, a P-type InP layer, an InGaAsP optical grating layer and an InP optical grating layer on an N-type phosphatization indium substrate by use of the metallic organic chemical vapor deposition method; uniformly coating the surface of an epitaxial wafer with photoresist, shielding parts of the optical gratings through a photolithography mask, carrying out exposure under a photoetching machine and carrying out holographic exposure and development so as to form optical grating regions and non-optical grating regions; using the photoresist to serve as protection layers and corroding theInP optical grating layer in the optical grating layer by use of reactive ion etch technology; and using selective corrosion liquid for InGaAsP to corrode the InGaAsP optical grating layer and allowing the liquid to stand and corrode for 1-2 minutes under the indoor temperature. According to the invention, by using the photoresist to serve as protection layers and by use of the reactive ion etchtechnology and the selectivie wet etching, parts of optical gratings with the consistent depth are formed; and the method is suitable for batch manufacturing of DFB lasers.
Owner:WUHAN GUANGANLUN OPTOELECTRONICS TECH CO LTD

Milling machine convenient to deash and move

The invention discloses a milling machine convenient to deash and move. The milling machine comprises a milling chamber, wherein a first motor is mounted above the milling chamber, one side of the milling chamber is fixedly connected with a first belt pulley, a moving wheel is amount at the middle of the inner part of the first belt pulley, one side of the moving wheel is provided with a slide rail by bolts one side of the first belt pulley is connected with a connecting shaft, front wheels are symmetrically mounted on two sides of the milling chamber, a fixed box is mounted at one end of themilling chamber, a diesel generator is mounted on one side of the first motor, and an oil tank is fixed above the diesel generator. According to the milling machine, a moving wheel device and a rotating seat device are mounted; the bolt on one side of the moving wheel is unscrewed, so that the first belt pulley is in a loose state, and the pavement notching depth of a notcher is increased; after aproper depth is reached, the moving wheel is fixed, and the problem that width and depth are inconvenient to adjust for the notcher according to needs is avoided.
Owner:吉林富众汽车装备科技有限公司

Electromagnetic impulse irradiation system and method for promoting medicament to permeate bloodbrain barrier

The invention relates to a mine disaster survival capsule, in which the workers can quickly enter in mine disaster, to be protected. And the survival capsule is sealed and vibration-insulated system, which can contain five people for more than five days. The invention is formed by a breath circulator, a living system, a discharge system, a lighting system, a sealed thermal-insulated vibration-insulated system, a communication system, and an emergency medical box; therefore, people can live in it freely.
Owner:郭国祯 +1

Combined knife blade type terrain-self-adaptation furrowing machine

The invention discloses a combined knife blade type terrain-self-adaptation furrowing machine, which comprises a frame, a furrowing mechanism, a terrain detecting device and a depth limiting and regulating device, wherein the furrowing mechanism, the terrain detecting device and the depth limiting and regulating device are all mounted on the frame; the terrain detecting device is mounted on the frame and is used for detecting the real-time terrain state of a ground surface to be furrowed by the furrowing machine; a knife-blade included angle regulating device is mounted on the frame and is further used for regulating the opening-closing angles of combined furrowing knife blades according to the demand of a user; the depth limiting and regulating device comprises a first depth limiting device and a second depth limiting device; the depth limiting and regulating device is used for regulating the heights of the first depth limiting device and the second depth limiting device based on thedetection result of the terrain detecting device. The combined knife blade type terrain-self-adaptation furrowing machine is used for avoiding the problems that the furrowing depth is not uniform anda furrow dam is unsymmetrical, which are caused as the ground surface is uneven, guaranteeing the consistency of the furrowing depth and providing convenience for later drainage and irrigation.
Owner:ANHUI AGRICULTURAL UNIVERSITY

Trench gate enhanced GaN-based HEMT device and preparation method thereof

The invention provides a trench gate enhanced GaN-based HEMT device and a preparation method thereof. The HEMT device sequentially comprises a substrate layer, a buffer layer, a first pressure-resistant layer, a strip-shaped mask layer, a second pressure-resistant layer, a channel layer, a barrier layer, a PGaN layer, a source electrode, a drain electrode and a grid electrode from bottom to top, wherein the strip-shaped mask layer is located in a preset area of the surface of the first pressure-resistant layer, the upper surface of the channel layer is provided with a V-shaped groove, and theV-shaped groove is located above the strip-shaped mask layer; the thickness of the barrier layer in the V-shaped groove is 1 / 2-1 / 5 of the thickness of the horizontal surface of the channel layer; thePGaN layer is located on the surface of the V-shaped groove, the grid electrode is located on the surface of the PGaN layer, and the source electrode and the drain electrode are located on the surfaceof the channel layer. The problem of etching damage caused by barrier etching in an existing p-type trench gate enhanced HEMT device is effectively solved.
Owner:LATTICE POWER (JIANGXI) CORP

Easy-to-collect-and-carry lever-type cardiopulmonary resuscitation compressor

The utility model relates to an easy-to-collect-and-carry lever-type cardiopulmonary resuscitation compressor, which comprises a fixed part and a swing part. The swing part and the fixed part are hinged by a swing shaft; the swing part comprises a press head, a press swing rod, a movable handle held by the rescuer's wrist. The swing end of the press swing rod is connected with the movable handle;the fixed end of the press swing rod is connected to the swing shaft; the press head and the press swing rod move up and down around the swing shaft with the movable handle; the easy to collect and carry lever-type cardiopulmonary resuscitation compressor is characterized in that the fixed part is a scaffold, the swing shaft is mounted on the scaffold, the swing end of the press swing rod is alsoconnected with a vertical floating grounding bar, the press swing rod is made in subsection, and movable plug-in structures are arranged between sections of the press swing rod. The easy-to-collect-and-carry lever-type cardiopulmonary resuscitation compressor has the advantages of small volume and low cost, which is suitable for the popularization of family and public places so that first-aid compressions can be carried out at once, and can effectively control the pressing depth and save energy.
Owner:黄浩扬

Threaded hole repairing drill bit assembly and threaded hole repairing method

ActiveCN108031933AFix safe and fastGuaranteed positioning sizeThread cutting toolsThread cutting machinesEngineeringWrench
The invention provides a threaded hole repairing drill bit assembly and a threaded hole repairing method. The threaded hole repairing drill bit assembly comprises a first rod-shaped body, a second rod-shaped body and a third rod-shaped body which are sequentially used in a threaded hole repairing process. The first end of the first rod-shaped body, the first end of the second rod-shaped body and the first end of the third rod-shaped body are provided with connecting portions which are connected with a spanner, the second end of the first rod-shaped body, the second end of the second rod-shapedbody and the second end of the third rod-shaped body are provided with spiral cutting knives, and the diameter of the first rod-shaped body, the diameter of the second rod-shaped body and the diameter of the third rod-shaped body are matched with the inner diameter of a threaded hole. The end portion of the cutting knife of the first rod-shaped body and the end portion of the cutting knife of thesecond rod-shaped body are provided with guide parts used for being clamped into the threaded hole respectively, and the diameter of the guide parts is matched with the tooth top circle of the threaded hole. The threaded hole repairing drill bit assembly can be used for safely and rapidly repairing the threaded hole of which threads are damaged or the threaded hole which does not meet the requirement of a measurement standard.
Owner:CRRC TANGSHAN CO LTD +1

Paddy field shallow, wet and dry water quantity monitoring and control instrument

The invention discloses a paddy field shallow, wet and dry water quantity monitoring and control instrument, and belongs to the automatic monitoring and control technology. A soil water content positive pole detection probe, a negative pole detection probe and a pyramid body are fixedly installed outside the lower end of a shell, an upper water level positive pole detection probe and a lower water level positive pole detection probe are installed in the shell in the mode of being capable of moving up and down to be adjusted, an inner cavity in the lower lateral portion of the shell and the exterior are of an communication structure, the soil water content positive pole detection probe, the upper water level positive pole detection probe, the lower water level positive pole detection probe and the negative pole detection probe are respectively communicated with a sensing information processor through wires, and the sensing information processor is sequentially connected with an electronic valve opening-closing automatic controller and an electronic automatic control water valve through wires. The paddy field shallow, wet and dry water quantity monitoring and control instrument provides the technical support for popularization and application of the advanced paddy field shallow, wet and dry alternate circulation irrigation agriculture technology for north cold region paddy planting, and has the advantages of being novel and reasonable in structural design, high in automation degree, high in measuring and control accuracy, reliable in use and few in fault.
Owner:JIXI TIANHE TECH

Airport runway crack detection and maintenance equipment

ActiveCN110144799AAvoid depthAvoidance of superficialityRoads maintainenceData informationWater tanks
The invention relates to airport runway crack detection and maintenance equipment. According to the airport runway crack detection and maintenance equipment, problems of low detection efficiency and low automation level of an existing airport runway crack detection device are effectively solved. The technical scheme for solving the problems is that a crack real-time monitoring device is arranged on a trailer; monitored data are transmitted to a micro-controller in real time; the micro-controller controls a grooving device to groove a rack according to the monitored crack data information; while the grooving device grooves the crack, protective plates are arranged on the trailer; during grooving, the two protective plates are closed to protect the crack detection device arranged on the trailer (damages of crushed stones and sand particles on the crack detection device during grooving can be avoided); while the grooving device grooves the crack, water in a water tank arranged on the trailer is sprayed to the grooving position through water spraying holes formed in the bottom walls of the protective plates; and therefore, larger dusts can be avoided during grooving.
Owner:ZHENGZHOU UNIVERSITY OF AERONAUTICS

Detection probe for methylation locus, preparation method of detection probe, detection kit and detection method

The invention relates to a detection probe for a methylation locus, a preparation method of the detection probe, a detection kit and a detection method. The detection probe for the methylation locus comprises a nucleotide segment used for being bound with an area around a methylation high mutation area, and nanogold or nanoparticles connected with the nucleotide segment. When the detection probe for the methylation locus is applied to detection for the methylation locus, the detection efficiency and accuracy can be improved.
Owner:SHENZHEN YHLO BIOTECH

Silicon carbide semiconductor device and preparation method thereof

The invention relates to a silicon carbide semiconductor device and a preparation method thereof. Two sides of a trench gate dielectric layer are respectively provided with two heavily doped polycrystalline silicon trench regions of a second conductive type. Due to the energy band structure of silicon carbide and polycrystalline silicon, the area of a depletion region of a shielding region is reduced by the polycrystalline silicon trench region. The reduction of the area of the depletion region not only can reduce the electric field intensity at the corner of the protective trench gate medium, but also can slightly hinder electron flow, thereby reducing the resistance of the drift region. The polycrystalline silicon deposition process of the second conduction type is relatively simple, and the problems of depth and transverse diffusion caused by the traditional silicon carbide ion implantation process of the second conduction type are avoided by adopting the heavily doped polycrystalline silicon trench region of the second conduction type.
Owner:SONGSHAN LAKE MATERIALS LAB +1

Multimodal subsynchronous oscillation adaptive damping control method and apparatus

The invention discloses a multimodal subsynchronous oscillation adaptive damping control method and apparatus. The method comprises the following steps: obtaining multiple feedback signals in a control system after filtering; according to the multiple feedback signals after the filtering, obtaining amplitude and a damping ratio of each oscillation mode among multiple oscillation modes; according to the amplitude and the damping ratio of each oscillation mode among the multiple oscillation modes, adaptively adjusting a gain value of each oscillation mode among the multiple oscillation modes in the control system; and according to the gain value of each oscillation mode, distributing capacities to each oscillation mode among the multiple oscillation modes. According to the control method, the multiple oscillation modes can be taken into consideration, disturbance is automatically adapted, the control capacities are distributed among the multiple modes, variable gain control is realized, and deep amplitude limiting of compensation signals is avoided.
Owner:TSINGHUA UNIV

Power-driven rake

PendingCN113348789AImprove flatnessHas supercharging effectSpadesTilling equipmentsGear driveGear wheel
The invention discloses a power-driven rake, which comprises a gear box, a plurality of rake groups, a traction frame, a reduction gearbox, a soil compacting and leveling device and a wheel mark scarifier, a cross beam is fixedly connected with the gear box, the reduction gearbox is arranged at the top end of the gear box, the gear box comprises a plurality of groups of gears and rake tooth shafts which are arranged side by side and are meshed with each other, a rake tooth seat is arranged at the lower end of each rake tooth shaft, rake teeth are fixed on the rake tooth seat, the gears drive the rake tooth shafts, the rake tooth seats and the rake teeth to rotate, the wheel mark scarifier is arranged at the front end of the gear box, the soil compacting and leveling device is arranged at the rear end of the gear box, after rake teeth crush soil, concave parts of the soil are filled with front soil leveling bars, primary soil leveling is carried out, then compacting rollers are used for soil compaction and soil moisture conservation, finally, a rear soil leveling plate device is used for secondary leveling, the soil leveling effect is good after operation, and only one-time operation is needed.
Owner:宜兴博登泰科工业装备有限公司

Method for measuring throughput capacity of submersible electric pump

A method for measuring throughput capacity of a submersible electric pump includes measuring the inner diameter d1 of a sleeve; measuring the arc length L1 of a deflecting section and the bending curvature alpha 1 of the sleeve on the deflecting section; measuring the maximum outer diameter d2 and the length L2 of the submersible electric pump to be measured; determining that the electric pump is about to be damaged if the maximum bending curvature alpha 2, which is known to be 3 degrees from experience, of a submersible electric pump unit is larger than 3 degrees; computing Y1 and Y2 according to geometrical relationship; and determining that the submersible electric pump can get through when the Y1 is larger than or equal to the Y2; and determining that the submersible electric pump cannot get through when the Y1 is smaller than the Y2. The method has the advantages that whether the submersible electric pump can get through a bent section in a bent oil well or not can be measured, the problem that the submersible electric pump is jammed in the bent section during actual operation so that the requirement on pump setting depth cannot be met is avoided, and damage to the electric pump and damage to the oil well during operation are also avoided.
Owner:李健忠

Cold-roll steel sheet texture measurement method

The invention discloses a cold-roll steel sheet texture measurement method which comprises the following steps: S1, treating the surface of a cold-roll steel sheet so as to obtain a test sample 1; S2,measuring the <111> / / ND texture ratio within the maximum orientation deviation of 20 degrees so as to obtain a result A; S3, performing argon ion etching on a test sample 1 to be tested so as to obtain a test sample 2 to be tested; S4, detecting a surface argon ion etching depth T of the test sample 2 to be tested; and S5, measuring a <111> / / ND texture ratio within the maximum orientation deviation of 20 degrees so as to obtain a result B, and repeating steps S3 to S5 till the quotient of the absolute value of BN-AN divided by AN is greater than or equal to 50%, thereby obtaining a final argon ion etching depth TN, that is, the depth of a cold-roll steel sheet surface texture. By adopting the method disclosed by the invention, the depth of a micro-grade characteristic texture of the surface layer of a cold-roll sheet that the crystal orientation has differences from that of the central part of the cold-roll sheet can be accurately measured.
Owner:SHOUGANG CORPORATION

Circuit board, processing method of circuit board and processing method of counterbore

The invention provides a circuit board, a processing method of the circuit board and a processing method of a counterbore. The machining method of the counter bore comprises the steps that the theoretical depth Z of the counter bore is calculated according to the maximum diameter D of an orifice of the counter bore to be machined, wherein Z = the drilling plate depth of a machine minus D / 2; setting a machining program of the counterbore according to the theoretical depth; the counter bores are drilled in the plate edge of the plate in a trial mode; the part, where the counterbore is tested to be drilled, of the plate is sliced, so that the actual machining depth of the counterbore is obtained; comparing the actual machining depth of the counterbore with the theoretical depth to obtain a depth deviation value of the counterbore; whether the depth deviation value of the counterbore is within a preset difference value range or not is judged; and if yes, the plate is machined. Compared with a traditional counterbore machining method, a parallel plate does not need to be drilled, the machining time of the counterbore is greatly saved, and the machining efficiency of the counterbore is improved.
Owner:CAMELOT QINGYUAN HYTEC TECH INVESTMENT

Safety protection device for injector

The invention belongs to the technical field of medical instruments, and particularly relates to a safety protection device for an injector. The sliding inner tube unit is arranged in the fixed outer tube unit, and the needle cylinder clamping frame unit is arranged at the rear end of the sliding inner tube unit, so that the effect that injection operation is more accurate and safer is achieved. The protection device has the following advantages that firstly, after the needle cylinder is mounted on the protection device, the needle cylinder is always parallel to the fixed outer tube unit, and as long as the fixed outer tube unit does not deflect, the injection operation is vertical insertion, so that pain caused by deflection of a needle head is avoided; secondly, the sliding inner tube unit has a determined sliding distance on the fixed outer tube unit, the insertion depth can be ensured when the needle cylinders of the same specification are used, and the problem that the depth is not enough or too large is avoided; and thirdly, when the sliding inner tube unit and the needle cylinder are inserted together, the sliding inner tube unit is always and stably sleeved with the fixed outer tube unit, so that the stability of the needle cylinder is relatively high in the injection operation process.
Owner:SHANGHAI BRAVO TECH CO LTD

Crusher rack convenient to disassemble and assemble

InactiveCN113333066ASlow down cold welding progressEasy to disassembleGrain treatmentsPunchingStructural engineering
The invention discloses a crusher rack convenient to disassemble and assemble. The crusher rack comprises a rack shell, the rack shell comprises an upper rack body and a lower rack body, and an auxiliary disassembling and assembling assembly is arranged at the joint of the upper rack body and the lower rack body. The auxiliary disassembling and assembling assembly comprises a driving part, a punching rod is arranged on the driving part, separating inclined blocks located on the joint face of the upper rack body and the lower rack body are arranged on the two sides of the punching rod, and the separating inclined blocks can move in the radial direction of the rack shell. By arranging the auxiliary disassembling and assembling assembly between the upper rack body and the lower rack body, it is guaranteed that during disassembling, the joint face of the rack bodies can be laterally cut through the separating inclined blocks, the cold welding phenomenon caused by metal atom diffusion is avoided, and disassembling of the crusher rack bodies is facilitated.
Owner:埃里斯克矿山工程机械有限公司

Pulmonary vein PFA atrial fibrillation ablation catheter

The invention discloses a pulmonary vein PFA atrial fibrillation ablation catheter which comprises an outer catheter, an inner catheter is sleeved with the outer catheter, a memory ablation needle set is arranged on the inner catheter, and the memory ablation needle set is composed of a plurality of memory ablation needles evenly arranged on the inner catheter in a circumferential mode. An ablation electrode is arranged in the middle of the upper surface of the memory ablation needle; the memory ablation needle is made of a memory alloy material. When the PFA ablation catheter is applied to pulmonary vein ablation, the memory ablation needle has very good flexibility and elasticity, and when the memory ablation needle set extends out of the outer end of the outer catheter to be opened, the memory ablation needle can be well matched with a pulmonary vein cavity in shape, so that the purpose that an ablation electrode is firmly attached to a myocardial wall is achieved; due to the arrangement of the width of the ablation electrode and the memory ablation needle, after the memory ablation needle is attached to the myocardial wall, the ablation electrode can be isolated from blood, a blood low-resistance path is cut off, and bubbles generated by electrolysis are prevented.
Owner:上海锐颢电子科技有限公司

Noise reduction and sound insulation apparatus, noise reduction and sound insulation circuit, and design method of noise reduction sound insulation circuit

The invention provides a noise reduction and sound insulation apparatus, a noise reduction and sound insulation circuit, and a design method of the noise reduction sound insulation circuit. The noise reduction and sound insulation apparatus is characterized in that the noise reduction and sound insulation apparatus is provided with a noise reduction and sound insulation housing, a microphone, a loudspeaker and a noise reduction and sound insulation circuit, and can divide the space where people are into noise space and noise reduction space; a pillow can be put in the noise reduction space, and the head of a sleeping user is arranged in the noise reduction space; compared with the related technology which performs noise reduction and sound insulation through earplugs or earmuffs, for the noise reduction and sound insulation apparatus, the user can avoid from external interference during the sleeping process with no requirements for plugging the earplugs or wearing the earmuffs, so that the sleeping quality is guaranteed; and therefore, the noise reduction and sound insulation apparatus can avoid the defect of poor blood circulation of ears, difficulty on entering the deep sleeping state for people, and hearing loss because noise reduction and sound insulation are carried out through the earplugs or the earmuffs.
Owner:HUITING ACOUSTICS TECH BEIJING CO LTD

Labor-saving picture frame hanging slot manufacturing equipment

The invention discloses labor-saving picture frame hanging slot manufacturing equipment, and mainly aims to solve the problem of high probability of causing different depths at left and right ends of a hanging hole during perforation by directly using a lock-hole machine in the prior art. The equipment comprises a picture frame placement table body (1), a bracket (2) and the lock-hole machine (3), wherein the bracket (2) is arranged on the picture frame placement table body (1); the lock-hole machine (3) is arranged on the bracket (2); the bracket (2) consists of a bracket body (21), mutually symmetric L-shaped slot bodies (22) and sliding members (23); the bottom end of the bracket body (21) is fixedly arranged on the picture frame placement table body (1); the L-shaped slot bodies (22) are arranged on the bracket body (21); the sliding members (23) are arranged on the L-shaped slot bodies (22) for moving along the L-shaped slot bodies (22); the lock-hole machine (3) is detachably connected with one sliding member (23). The equipment has the advantages of more labor-saving in perforation, capability of effectively preventing operation error, same length, same depth and straight aperture of manufactured hanging holes and the like.
Owner:成都雅致工艺品有限公司

Clothes treatment equipment

The invention relates to the technical field of clothes treatment equipment, and particularly provides clothes treatment equipment. The clothes treatment equipment aims at solving the problem that there are big errors of pre-locating cooperation between an existing clothes treatment drum and a shell of an existing direct drive motor. For the purpose, the clothes treatment equipment comprises an outer drum, an inner drum rotatably arranged in the outer drum, a direct drive motor and a clamping assembly used for tightly connecting the outer drum with the shell, and the direct drive motor comprises a shell and a driving assembly arranged in the shell and used for driving the inner drum to rotate; a reinforcement member is arranged on the shell and used for improving the strength of the shell.According to the clothes treatment equipment, the outer drum is tightly connected with the shell of the direct drive motor through the clamping assembly, the outer drum and the shell of the direct drive motor are pre-located, and the assembly progress rate of a drum washing machine is increased. By arranging the reinforcement member on the shell, the strength of the shell is improved, and the direct drive motor can bear the outer drum of the drum washing machine and loaded clothes in the work state.
Owner:QINGDAO HAIER DRUM WASHING MACHINE

Cable stripping device and cable stripping equipment

The invention discloses a cable stripping device, which belongs to the field of cable stripping. The device comprises a linear reverse mold module and a cutting knife. The blade face of the cutting knife is gradually passivated backwards from the knife point of the cutting knife; the linear reverse mold module is used for enabling the cutting knife to be attached to the surface of a cable core; the passivated side of the cutting knife is arranged on the surface side of a cable; when a cable core sheath is cut, the connection between the cable core sheath and the cable core is torn off at the same time. Cable stripping equipment comprises at least two groups of cable stripping devices. The groups of cable stripping devices are used for being arranged at corresponding positions of a cable so as to enable a walking wheel to clamp the cable, and the cutting knives are installed at corresponding positions on a wheel frame so as to enable the cutting knives to cut the cable core sheath.
Owner:XICHUAN COUNTY POWER BUREAU
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