36results about How to "Satisfied for repeated use" patented technology

The invention discloses an orthopaedics department knee joint anterior cruciate ligament dissection reestablishment system which comprises a thighbone end locator, a central hole locator, a 8 / 9 mm hollow drill, a 6 / 12 point hole fixing device, a 6 point hole sleeve, a 3 / 9 point hole fixing device, a 3 / 9 point hole leveling device, a working sleeve, a working sleeve introducer, a shin bone end locator, a kirschner wire and a guiding needle. The orthopaedics department knee joint anterior cruciate ligament dissection reestablishment system is simple in structure, convenient to use, capable of reestablishing the anterior cruciate ligament of a knee joint conveniently.

The invention discloses an ACL multi-beam reconstruction technology for a knee-joint ACL (anterior cruciate ligament) for department of orthopaedics, and the technology comprises a thighbone end footprint positioner, a door-type guide frame, a positioning operation channel sleeve, a positioning operation channel sleeve guider, a central hole positioner, an orthopaedics department hollow drill, a cancellous bone extractor, a 12-point positioning guider, a 3 / 9 point positioning guider, a shin bone end arc-shaped positioning guider, a shin bone end central hole positioning guider, and a shin bone end trepanning guider. The technology is convenient to use, can achieve the protogenetic reconstruction of the knee-joint ACL conveniently, achieves the complete covering of a deserved footprint region, achieves the function of the intersecting of a front beam and a rear beam, and achieves the protogenetic reconstruction after repeated damage.

The invention discloses an anatomic reconstruction system for posterior cruciate ligaments of orthopaedic knee joints, which comprises a tibia-end positioner, a center hole positioner, a tibia positioner fixed guide sleeve, a tibia wing guide sleeve, a hollow drill, a conduit tube, a thread guide, a kirschner wire and a guide pin. The anatomic reconstruction system disclosed by the invention is simple in structure and convenient to use, and can conveniently reconstruct posterior cruciate ligaments of knee joints.

The invention provides a liquid-magnetic composite bearing structure for a reusable rocket turbine pump. An annular bearing bush body is arranged on an inner ring of a bearing pedestal and is axiallyconnected and fixed to a turbine pump shell. An even number of sector-shaped bush blocks are distributed at equal intervals in the circumferential direction and installed on the inner surface of the bearing bush body through elastic oblique fulcrums, oblique bushes are formed, and each oblique bush is internally and symmetrically provided with a pair of superconducting blocks in an embedded mannerin the circumferential direction. The position, corresponding to a liquid-magnetic composite bearing, on a turbine pump rotating shaft is sleeved with a permanent magnet ring. According to the liquid-magnetic composite bearing, dynamic pressure liquid film force and superconductive magnetic force are used for carrying out synergistic bearing on a turbine pump shafting, low-speed suspension and high-speed deloading are achieved through superconductive magnetic force, a high-speed main bearing force field is formed through the dynamic liquid film force, the problem that at the starting and stopping stages of an ordinary liquid film bearing, friction abrasion is serious is solved, and the liquid-magnetic composite bearing structure has value for developing a next generation of long-service life and high-reliability shafting supporting technology for the reusable rocket turbine pump.

The invention discloses an orthopedic shoulder joint glenoid labrum repairing and reconstructing tool system. The system comprises a glenoid face positioner, a sliding positioning drilling guider, a parallel face kirschner wire guider and a kirschner tip; the glenoid face positioner comprises a connecting part, a hook-shaped positioning part is connected to the end face of one end of the connecting part, a guiding part is connected to the end face of the other end of the connecting part, the end, far away from the connecting part, of the hook-shaped positioning part is provided with crossed fixing grooves, a parallel face kirschner wire guider channel and a sliding positioning drilling guider channel which penetrate through the whole guiding part are formed in the middle of the guiding part, and a locking screw channel which is communicated with the sliding positioning drilling guider channel is formed in the bottom of the guiding part. The orthopedic shoulder joint glenoid labrum repairing and reconstructing tool system is simple in structure, convenient to use and capable of reconstructing orthopedic shoulder joint glenoid labrum conveniently.

The invention discloses an orthopedics-department knee-joint operative position fixing working table. The orthopedics-department knee-joint operative position fixing working table comprises a fixing base, a foot fixing unit, a downward-pulling connecting rod unit, an upward-lifting connecting rod unit, a joint pulling sliding unit and a tendon tension measuring assembly. The foot fixing unit, the downward-pulling connecting rod unit, the upward-lifting connecting rod unit and the joint pulling sliding unit are all in sliding connection with the fixing base. The orthopedics-department knee-joint operative position fixing working table is convenient to use, the knee joint can be conveniently fixed at any angle, a joint gap can be sufficiently and stably exposed, the stable operation state can be achieved, iatrogenic injuries can be reduced, and operation time can be shortened; ligament fixing tension is digitalized, and the ligament original-tension reconstruction function is achieved.

The invention discloses a helium recovery device and method for the leakage detection of a high-pressure gas cylinder. The helium recovery device comprises a gas storage container, a temperature and pressure monitoring unit, a measuring instrument, a replacement system, a pressure relief controller and a vacuumizing unit; the gas storage container is used for storing helium recovered from a detected high-pressure gas cylinder; the temperature and pressure monitoring unit is used for monitoring the temperature and pressure of the high-pressure gas cylinder and the gas storage container in a recycling process; the measuring instrument is used for measuring the concentration of the recycled helium in the gas storage container; the replacement system is used for replacing air in the gas storage container before helium recovery to ensure the purity of the recovered helium; the pressure relief controller is used for adjusting the rate of the relief of pressure from the high-pressure gas cylinder to the gas storage container; and the vacuumizing unit is used for vacuumizing the gas storage container. The helium recovery device can recover helium after the leakage detection of the high-pressure gas cylinder is completed, meanwhile, it is guaranteed that the recovered helium has certain purity, and the use requirement of next leakage detection can be met.

The invention discloses a scaling model flight flutter test pulse excitation method, and relates to the technical field of scaling model flight flutter tests. The scaling model flight flutter test pulse excitation method comprises the following steps that 1, a gas container is installed on a scaling model; 2, the gas container in the step 1 is inflated with compressed gas; 3, a covering cap of the gas container is opened by means of a control mechanism, so that the inflated compressed gas in the step 2 is ejected out instantly, and then the covering cap is closed through the control mechanism. The scaling model flight flutter test pulse excitation method has the advantages that compared with the prior art, the structure is simple, a small rocket does not need to be ignited, the method is only applicable to compressed gas ejection, is safe, environmentally friendly, and short in pulse excitation time, the pulse force and the pulse time can be adjusted, the container can be inflated with gas again after the compressed gas is released, the gas can be recycled, and the using cost is low.

The invention discloses a knee joint anterior cruciate ligament femoral tunnel needle withdrawal direction guiding and positioning system. The system comprises an arc-shaped positioner, a rotating block piece, a spring and a fastening screw rod, the arc-shaped positioner comprises an arc-shaped part, a horizontal kirschner wire channel is formed in the position, near the end face, of one end of the arc-shaped part, a clamping part is arranged on the other end face of the arc-shaped part, a positioning channel horizontally penetrating the whole clamping part and a vertically upward fastening screw through hole are formed in the lower end face of the clamping part, the axis of the positioning channel is in accordance with that of the kirschner wire channel, the fastening screw through hole is internally provided with a thread, and a center hole is formed in the center of the rotating block piece. The knee joint anterior cruciate ligament femoral tunnel needle withdrawal direction guiding and positioning system is simple in structure, convenient to use and capable of providing accurate femoral tunnel direction to doctors.

The invention discloses a multi-tunnel guide positioning system in a knee-joint multiple ligament injury surgery. The multi-tunnel guide positioning system comprises a longitudinal bow positioner, a transverse bow positioner, a longitudinal kirschner wire guide sleeve, a transverse kirschner wire guide sleeve and a tunnel space adjustment sheet, wherein the longitudinal bow positioner, the tunnelspace adjustment sheet and the transverse bow positioner are sequentially connected through connecting bolts from top to bottom, the longitudinal kirschner wire guide sleeve is connected with the longitudinal bow positioner through a longitudinal locking screw, and the transverse kirschner wire guide sleeve is connected with the transverse bow positioner through a transverse locking screw. The multi-tunnel guide positioning system can provide accurate bone tunnel guide management for surgeons, is used for positioning guide management of a plurality of bone tunnels in reconstruction of a plurality of ligaments under arthroscopy during surgical treatment of knee-joint multiple ligament injury, and avoids mutual crossing and interference of the tunnels on the premise of accurately positioningbone tunnel inlets according to surgical requirements.

The invention discloses a trolley for simulating a side collision test of a car. The trolley comprises a chassis, wherein a rear end frame is welded at the rear end of the chassis, car wheel modules are installed at four vertex corners of the chassis, a linear bearing module is installed at the front end of the chassis, four groups of collision rods are installed on the linear bearing module, thefront ends of the four groups of collision rods are provided with a first buffer device, a car door installation tool are installed on the three upper groups of collision rods, a seat installation pedestal is installed on the bottommost collision rod, a car roof frame is installed above the rear end frame and the linear bearing module, the linear bearing module is provided with a gas curtain installation bracket, a side buffer is installed at the front end of the linear bearing module, and the front end of the side buffer is provided with a second buffer device. The trolley improves the simulation effect of the side collision test of the car, can accurately simulate the impact conditions of different parts of a dummy during the side collision, and reduces the test cost.

The invention discloses a moving system for a construction awning. The moving system is composed of cross bars, longitudinal bars and upright posts. The moving system is characterized in that a sliding boot is arranged at the bottom of each upright post on the outer side in the longitudinal bar direction of the construction awning, and the sliding boots are matched with slideways fixed on the ground; the cross sections of the slideways are in an I shape, and the sunken positions on both sides of the slideways are sliding surfaces; the sliding boots comprise supporting seats fixedly connected with the bottom surfaces of the upright posts and guide wheels matched with the sliding surfaces; and the moving system further comprises pushing units, the pushing units comprise pushing power units,the fixed ends of the pushing power units are connected with the sliding boots, and anti-thrust mechanisms are arranged at the output ends of the pushing power units. The moving system meets the repeated use of the construction awning, the process of dismounting and erecting the awning again is eliminated, construction such as excavation can be carried out continuously at the same time, the construction period is greatly speeded up, the safety and comfort of construction personnel as well as energy saving, land saving, water saving, material saving and environmental protection are ensured, andthe requirement of green construction is met.

The invention discloses a multi-tunnel guiding management system in multiple ligament injuries of the knee joint, which includes a longitudinal arc locator, a transverse arc locator, a longitudinal Kirschner wire guiding sleeve, a transverse Kirschner wire guiding sleeve, and a tunnel spacing adjustment sheet. The longitudinal bow-shaped positioner, the tunnel spacing adjustment piece and the transverse bow-shaped positioner are sequentially connected by connecting bolts from top to bottom, the longitudinal Kirschner wire guide sleeve and the longitudinal bow-shaped positioner are connected by longitudinal locking screws, and the transverse The Kirschner wire guiding sleeve is connected with the transverse bow positioner through a transverse locking screw. The present invention can provide surgeons with accurate guide management of bone tunnels, and is used for positioning and guide management of multiple bone tunnels when multiple ligaments are reconstructed under arthroscopy in the surgical treatment of multiple ligament injuries of the knee joint, so as to achieve accurate positioning of bone tunnels according to surgical requirements The purpose of avoiding mutual crossing or interference between tunnels under the premise of the entrance.

The invention relates to an on-orbit reusable multifunctional electromagnetic interface device, and belongs to the technical field of space connection and separation mechanism design. The device comprises an active end and a passive end. Butt joint and separation of the driving end and the driven end are achieved; the driving end comprises a driving end shell, three positioning electromagnets, three damping bases, an annular permanent magnet, a sleeve, a push rod, a coil, a wire column, a spring base, a spring and a sliding rod. The passive end comprises a passive end main body, three lock shafts and three point-shaped permanent magnets. According to the variable-speed separation device based on the electromagnetic force, the magnitude of the electromagnetic force is adjusted by controlling the voltage and the current and facing the actual weight and separation speed requirements of a star load in an unknown task, autonomous variable-speed separation of a star is promoted, the separation speed is adjustable, and the response is fast; meanwhile, the functions of on-orbit docking, transmission of inter-satellite substances or energy such as machinery, electricity, gas and liquid, variable-speed catapulting and the like of micro satellites are achieved, multi-level system connection is conducted, and a light and small device is formed.

The invention discloses a novel nanoscale graphene efficient oil absorption material and a preparation method thereof. The developed novel nanoscale graphene efficient oil absorption material comprises the following components: 10-13.5 wt% of C, 1.3-0.5 wt% of Ag, 0.1-0.3 wt% of CuO, 20-30 wt% of SiC, 20-34 wt% of Si, and the balance of quartz sand and unavoidable adsorbable impurities, wherein the sound wave oscillation frequency is 30 to 60 KHz, and the heat preservation time is 3-6 h. According to the invention, the novel nanoscale graphene efficient oil absorption material is prepared by mainly adjusting the ratio of the C element to the SiC element and matching with a plurality of rare elements, can well meet the requirements of the environments of a certain area polluted by crude oil, heavy oil and the like, is not high in process requirement, does not generate by-products in a processing process, and can well meet the environment protection and the adsorption treatment processing process.

The invention discloses a reusable non-setting adhesive strip which comprises a damp-proof storage box, an adhesive strip layer assembly is arranged in the damp-proof storage box and comprises a first adhesive layer, the first adhesive layer is arranged in the damp-proof storage box, the top end of the first adhesive layer is fixedly connected with a base material layer, and the top end of the base material layer is fixedly connected with a printing coating. A transparent waterproof protective film is fixedly connected with the top end of the printing coating, and first silicon-coated backing paper is glued to the bottom end of the first adhesive layer. The reusable non-setting adhesive strip has the beneficial effects that a U-shaped arm is driven by the arranged multi-stage hydraulic cylinder, the U-shaped arm drives a rolling wheel through a rotating shaft to push away a damp-proof protection cover, and the U-shaped arm is matched with a moisture-proof storage box, a screw, two electromagnets, two metal blocks, first silicon-coated backing paper, the first adhesive layer, a second adhesive layer and second silicon-coated backing paper, so that the adhesive strip is convenient to provide better storage protection and better meets repeated use, and the working efficiency of the adhesive strip is improved.

The invention discloses an orthopaedics-knee-joint balance-gap osteotomy positioning system. The orthopaedics-knee-joint balance-gap osteotomy positioning system comprises a balance-gap osteotomy positioning plate, an osteotomy positioning plate thickening sheet, a force-line guiding device, a force-line displaying steel wire and a laser transmitter. The balance-gap osteotomy positioning plate comprises a connecting part and a positioning part, wherein the positioning part is arranged at one end of the connecting part, and the positioning part and the connecting part are integrally formed. A U-shaped groove is formed in the end, away from the connecting part, of the positioning part. The orthopaedics-knee-joint balance-gap osteotomy positioning system is simple in structure and convenient to use, and a knee-joint prosthesis replacement operation can be conveniently carried out.

The invention belongs to the technical field of design and manufacture of underground coal mine transporting equipment, aims to solve the technical problems that the work amount is larger and time andlabor are wasted when the existing coal mine belt conveyor is used for pre-digging a foundation pit and anchoring a concrete poured machine head, and provides a crossheading belt conveyor foundation-free anchoring device which comprises a special hydraulic bracket anchoring unit, a stand column auxiliary rod anchoring unit and a connecting piece, wherein pressure monitoring and energy storing devices are arranged in the anchoring units; and anchoring force is provided for the anchoring units when a hydraulic oil cylinder support top beam is in contact with a crossheading top plate. The crossheading belt conveyor foundation-free anchoring device realizes rapid and reliable anchoring of the machine head of the crossheading belt conveyor, utilizes multi-point hydraulic support to replace thetechnology of pre-digging a foundation fit and concrete pouring, can realize automatic pressure supplementation and active anti-loose of anchoring force, reduces the labor intensity, accelerates themounting and dismantling speed of a conveyor, and improves the mine production efficiency.

The invention discloses a diatomite / polypropylene blended hollow fiber membrane and a preparation method thereof. According to the method, polypropylene serves as a main body, diatomite serves as an additive, and the following preparation technology is adopted: diatomite and polypropylene are weighed according to the mass percent, evenly mixed and then put into a double-screw extruder to be melted, and extruded and dragged through a spinning nozzle, and the hollow fiber membrane obtained by traction and shaping. The hollow fiber membrane prepared by the method absorbs oil by utilizing three pores including polypropylene material characteristics, tensile pore diameter and diatomite, and has the advantages of good chemical stability, high porosity, high strength, good oil absorption effect,recyclability and the like. Besides, for the membrane filaments with the oil absorption capacity reaching the limit, alkali liquor can be adopted for treating the membrane filaments, diatomite in themembrane filaments is dissolved out and leaks out of the pore diameter, and therefore oil absorption is continued.

The invention discloses an N type joint which can be quickly assembled to a leaky cable and has good electrical performance, and belongs to the technical field of communication equipment. The N type joint comprises a first joint body and a second joint body which are in threaded connection, the N type joint comprises C-shaped cable clamp with internal teeth and two bushes which form a V shape, the cable clamp and the bushes are located in an internal space formed after the first joint body and the second joint body are connected, the bushes wrap both ends of the cable clamp respectively, and an internal tooth profile of the cable clamp coincides with an outer profile of an outer conductor of a leaky cable that is connected. When the N type joint in the invention is connected with the leaky cable, only a sheath of an end part of the leaky cable needs to be stripped, a process of completely removing an insulating medium is omitted, in a process of screwing the first joint body and the second joint body together, and the bushes generate axial displacement and extrude the cable clamp with the internal teeth, thereby achieving the beneficial effects of quick assembling and small discreteness of electrical performance.