111results about How to "Novel idea" patented technology

The invention discloses a monitoring and early warning method for wind-induced abnormal vibration of a cable-stayed bridge cable, and the method comprises the steps: calculating an energy concentration coefficient R according to a vibration intensity peak value P1st corresponding to a first large peak value and a vibration intensity peak value P2nd corresponding to a second large peak value; adding the energy concentration coefficient R into the array {R} to obtain an array {R} of bmin, and calculating the acceleration root mean square of the vibration acceleration data of the inhaul cable bmin according to the vibration acceleration data of the inhaul cable bmin; if k continuous energy concentration coefficients R in the array {R} of bmin exceed the early warning lower limit value and the acceleration root mean square exceeds the acceleration RMS upper limit threshold value, an early warning signal is sent out. The method has universality and effectiveness in identifying the second large vibration intensity peak value of different stay cable spectrograms, a bridge management and maintenance unit can conveniently know the abnormal vibration condition of the stay cable in time and maintain the stay cable, the service life of the stay cable is prolonged, and a guarantee is provided for safe operation of a bridge.

A novel external electromagnetic valve assembly of a shock absorber comprises an electromagnetic assembly and a valve body assembly, a guide-in valve sub assembly of the valve body assembly adjusts flow through a throttling valve piece, then adjustment of damping bandwidth is achieved, and the electromagnetic assembly is matched with a pilot hole and a damping hole of a main valve element of the valve body assembly through an electromagnetically-driven conical rod. The damping force can be stably established, the concept is novel, the design is ingenious, the stable damping force can be rapidly provided, and the effect is remarkable.

An adjusting prosthesis effectively solves the problems that when an existing wrist joint prosthesis is used, control and adjustment are inconvenient, and the fixing process is tedious and inconvenient. Comprising a main connecting block, the upper side of the main connecting block inclines in a left-low right-high mode, the upper end face of the main connecting block is an arc-shaped face which is sunken downwards, a hemispherical fixing sleeve is fixed to the lower side in the main connecting block, a sphere is arranged in the fixing sleeve, and the lower end of the sphere extends out of the fixing sleeve and is fixedly provided with a guide cylinder; the outer side of the guide cylinder is sleeved with a plurality of supporting pieces evenly distributed in the up-down direction, the projections of the supporting pieces in the front-back direction can form a big-end-up trapezoid, the projections of the supporting pieces in the up-down direction are oval, a threaded column capable of rotating in the up-down axial direction is arranged in the guide cylinder, and the lower end of the threaded column is in threaded connection with an extension cylinder. The lower end of the extension cylinder penetrates through the guide cylinder; the device is simple in structure, convenient to operate, novel in conception and high in usability.

A synchrotron radiation X-ray on-line research injection mold capable of rapidly switching forming mold cores comprises a fixed mold part, a movable mold part and a heating assembly, the movable mold part is located below the fixed mold part, and the demolding process of injection molding is completed in the mode that parting of an inclined sliding block is matched with ejection of an ejector rod. Comprising an incident side sliding block and an emergent side sliding block which form an injection cavity in a spliced mode, and a transparent window which allows an X-ray beam to penetrate through and does not generate interference is formed in the side wall of the injection cavity; a pressure sensor and a temperature sensor are installed on the incidence side sliding block and used for monitoring technological parameters in real time, and a sample mold core plate and a variable-thickness insert which can be rapidly switched are arranged in the emergence side sliding block. According to the injection mold disclosed by the invention, due to the existence of the mold core plate and the insert which can be quickly replaced, the manufacturing cost and the replacement time of the mold can be reduced, the production flexibility and efficiency are improved, and the injection mold can be combined with a synchrotron radiation X-ray experiment station for in-situ research on a polymer physical phenomenon of a polymer injection product under unbalanced and nonlinear processing.

The invention discloses an X-axis sliding mechanism of an electromagnet glass slide rack, comprising a glass slide rack platform integrated part composed of a connecting plate and a double-arm bracket, the lower surface of the connecting plate is connected to the X-axis bottom plate through an X-axis slide rail assembly, a push block is provided on the connecting plate, and a displacement sensor and a limit device are respectively provided on the front and rear sides of the X-axis slide rail assembly; a support plate is provided on the left forearm of the double-arm bracket, an electromagnet seat is installed on the right forearm of the double-arm bracket, an electromagnet coil, a small magnet block and a neodymium magnet block are embedded on the electromagnet seat, the glass slide rack is horizontally inserted in the double-arm bracket, and the glass slide rack is supported on the support plate and the right side block. The invention realizes the preliminary positioning of the glass slide rack by the small magnet block and the neodymium magnet block, realizes the complete fixation of the glass slide rack by the electromagnet coil, so that the glass slide rack and the glass slide rack platform integrated part temporarily form a whole, which not only ensures the stability of the glass slide plane during scanning and improves the scanning quality, but also has novel conception, compact structure, reliable performance and easy operation.

The present invention provides an empty box conveying mechanism for a fiber rod cartoning machine, which is provided with an electric cylinder assembly and a box conveying component. The box conveying component can reciprocate under the drive of the electric cylinder assembly, and the side push cylinder of the box conveying component pushes the movable gripper corresponding to the middle part of the height direction of the empty box, and then moves under the action of the electric cylinder, so that the movable gripper pushes the empty box forward from the middle part of the height direction of the empty box, and the empty box moves forward one station, and then the movable gripper retracts and resets, and is separated from the empty box, and the electric cylinder assembly drives the box conveying component to reset, and so on and so forth, so as to realize the conveying of the empty box. The present invention has a simple structure, is easy to use, and has a novel concept, and can effectively push the empty box to the cartoning station of the fiber rod cartoning machine, adopts the electric cylinder assembly as the main driving force for pushing, has a high degree of automation and accurate positioning, and can effectively improve the efficiency of box conveying and reduce the cost of box conveying.

The present invention discloses a high-precision flexible suction head, including an outer sleeve, a sliding cavity formed in the outer sleeve, a sliding piston assembly slidingly arranged in the sliding cavity, an air nozzle arranged on the outer sleeve, an air outlet pipeline formed on the air nozzle, the air outlet pipeline connecting the outside and the sliding cavity, an air charging pipeline formed along the sliding piston assembly, the air charging pipeline connecting the sliding cavity and the outside, and a buffer for air pressure buffering arranged on the sliding piston assembly. The present invention designs a negative pressure suction nozzle for SMT machines and SMT machines, which is used for adsorbing electronic components, utilizing air pressure changes for adsorption, having a gentle action and not easily damaging electronic components, and at the same time, through the control of air pressure, the accuracy of the adsorption force is easy to control, with good use effect and strong practicality.

The application discloses a tunnel lining modularization endless longitudinal grouting method, which comprises the following steps: step S1, three grouting holes for grouting pipes to pass through are symmetrically reserved on the vault of a tunnel lining pouring formwork, and the left and right side walls of the tunnel lining formwork are first grouted by using a punch grouting mode; step S2, a plurality of grouting pipes are installed by using a longitudinal grouting pipe mounting and dismounting system, and each grouting pipe is sequentially pushed into the grouting hole on the vault of the tunnel lining pouring formwork; step S3, the grouting pipes are pulled out and dismounted by the longitudinal grouting pipe mounting and dismounting system; and step S4, grouting is sequentially performed on one grouting hole on the left side or the right side and the grouting hole on the middle top according to steps S2 to S3, so that the working space of the grouting pipes is greatly reduced, the design is in line with actual demands, the conception is novel, and the concrete pouring effect is good.

The invention relates to the technical field of fire fighting and extinguishing, in particular to a forest fire extinguishing rocket projectile with a racemization empennage, which comprises a projectile head, a projectile body, a solid rocket engine, the racemization empennage and a baffle ring, the bomb body is provided with a shell, a superfine dry powder extinguishing agent, a front sealing plate, a rear sealing plate and an initiating explosive column, the solid rocket engine provides power for flight, the rotation eliminating empennage can rotate around the axis of the bomb body to eliminate airflow interference, and the baffle ring axially limits the rotation eliminating empennage; according to the forest fire extinguishing rocket projectile with the racemization empennage, long-distance launching is achieved through the solid rocket engine, accurate spreading of the fire extinguishing agent is guaranteed through the infrared proximity fuze, the superfine dry powder fire extinguishing agent is environmentally friendly and efficient, the racemization empennage improves the drop point precision, the forest fire extinguishing rocket projectile is suitable for fire extinguishing of large-area fire sources such as forests and grasslands, the casualty risk is reduced, and the forest fire extinguishing rocket projectile is suitable for large-area fire extinguishing. And the fire extinguishing timeliness and effectiveness are effectively improved.

According to the LED lens prepared through the net-shaped quantum dot structure, quantum dots are embedded into a net-shaped polymer through the links of quantum dot colloidal solution preparation, polymerization, cross-linking curing and the like, the net-shaped polymer quantum dot lens is obtained, the stability of the quantum dots of the LED lens is effectively improved through the prepared quantum dot lens, the service life is prolonged, materials and cost are saved, and the LED lens has good application prospects. And the healthy lighting effect is realized.

The utility model relates to a pain relieving uterus warming belt which effectively solves the problems that a hot compress bag is inconvenient to place and a pressing position is inconvenient to adjust when a patient warms the uterus. Comprising an elastic containing bag with an upward opening, winding belts are fixed to the left end and the right end of the containing bag respectively, a pressing belt is fixed to the front end of the winding belt on the right side, a fixing ring is arranged at the front end of the winding belt on the left side, the pressing belt can penetrate through the fixing ring, a magnetic suction plate is arranged on one side of the pressing belt, and a plurality of pressing devices are attracted to the rear end of the magnetic suction plate; a transmission box is arranged in front of the pressing belt, the left end and the right end of the rear side of the transmission box are detachably connected with the winding belts on the corresponding sides respectively, an opening of the transmission box faces backwards, and the inner side of the transmission box is slidably connected with a pressing plate. The pressing plate can make contact with the pressing belt and can slide back and forth in a reciprocating mode. The device is simple in structure, convenient to operate, novel in conception and high in practicability.

The invention discloses a novel railway long steel rail transportation double-oil-tank generator car, and belongs to the technical field of steel rail transportation generator cars, and the novel railway long steel rail transportation double-oil-tank generator car comprises a car body chassis, a carriage, a bogie, oil tanks and a connecting hose communicating the two oil tanks, the oil tank comprises a tank body, a multifunctional hole, a cleaning hole assembly for maintenance, an oil filtering and filling port, an oil tank lower mounting seat, a cleaning hole assembly for daily use, an oil discharge port, an oil meter assembly and an oil tank connecting seat, the oil tank connecting seat is integrally of an inverted-L-shaped elbow structure, the oil tank lower mounting seat is integrally of an inverted-L-shaped structure, and the vertical face of the oil tank lower mounting seat is correspondingly welded to the upper portion of the tank body. The double-fuel-tank mounting structure has the advantages that the fuel tanks are convenient and stable to mount, the double fuel tanks are asymmetrically mounted left and right, the weight of a vehicle body is balanced, the barometric pressure of the fuel tanks is kept balanced inside and outside, the structural design is linked with each other, and the like.

The invention discloses a chain type heightening rail shifting system which comprises a rail shifting mechanism, a lifting installation platform, a chain transmission mechanism, a stand column and a chain connecting mechanism. The chain transmission mechanism comprises four chain wheel seats which are symmetrically mounted on the lifting mounting platform in the front-back direction, chain wheels mounted on the chain wheel seats, four chains which bypass the chain wheels in parallel in pairs, a moving trolley for synchronously pulling the chains, a hydraulic driving assembly for providing driving force for the moving trolley and a guide rail for the moving trolley to transversely move left and right; the chain connecting mechanism is of a front-back mirror symmetry structure and comprises a chain fixing base fixedly connected with the chain, a limiting pulley assembly located on the outer side of the chain fixing base and a vertical guide support allowing the limiting pulley assembly to move up and down in a limiting mode. The device has the advantages that the manufacturing precision is reduced, the manufacturing cost is reduced, the requirement for lubricating conditions is not high, hydraulic driving is suitable for heavy-load and overload scenes, and the structures are linked with one another.

The utility model discloses an adjustable sludge scraping device for a horizontal flow pool. The mud scraping plate is hinged to the bottom of a traveling crane mud discharging pipe supporting frame and extends to the bottom of a sedimentation tank, the air cylinder is arranged at the upper end of the traveling crane mud discharging pipe supporting frame and used for driving the mud scraping plate to turn over and swing, and the lifting rod and the adjusting connecting rod are arranged between the air cylinder and the mud scraping plate and can adjust the length. The floating connector is arranged between the adjusting connecting rod and the air cylinder, the first U-shaped groove buckle is arranged between the lifting rod and the mud scraping plate, and a second U-shaped groove buckle and a third U-shaped groove buckle are arranged between the mud scraping plate and the traveling crane mud discharging pipe supporting frame in a hinged mode. The air cylinder is adopted to swing and turn over the mud scraping plate through the lifting rod, so that the mud scraping plate swings to a vertical state to be in contact with the bottom surface of the sedimentation tank to realize sludge collection during cleaning, and the air cylinder pulls the mud scraping plate to turn over to a horizontal state during return stroke, so that floating sludge cannot be disturbed during return stroke movement, and the cleaning effect is improved.

The invention discloses a tractor double-pump merging and diverting load sensing hydraulic system, comprising a first variable pump, a first single-piston cylinder, a first variable control valve, a second variable pump, a second single-piston cylinder, a second variable control valve, a first throttle valve, a relief valve, a two-position three-way hydraulic control valve, a hydraulic control three-way valve, a second throttle valve, a third throttle valve and a shuttle valve. The output oil pressure of the first variable pump is P1, and the output end EF of the first variable pump and the output end EF of the second variable pump are respectively connected to the input end PO of a lifting system. The tractor double-pump merging and diverting load sensing hydraulic system adopts a load feedback double-variable pump for oil supply, and the hydraulic control three-way valve controls the liquid flow direction of the second variable pump, so as to realize the double-pump merging and diverting operation and steering priority functions, so that the agricultural machinery does not lose direction during operation to ensure safety, and at the same time realizes the double-pump control steering and lifting hydraulic output functions, thereby improving work efficiency and being more economical and efficient.

The application discloses a fracturing fluid viscosity reduction simulation experiment system based on ultrasonic cavitation effect, which comprises a cavity, an ultrasonic cavitation mechanism, a laser measuring mechanism, an infrared observation mechanism, a loading mechanism and a data acquisition computer, the ultrasonic cavitation mechanism comprises an ultrasonic wave driving controller and an ultrasonic wave transducer, and the laser measuring mechanism comprises a laser driving power supply, a laser emitter and a photosensitive sensor. The application also provides a fracturing fluid viscosity reduction simulation experiment method based on ultrasonic cavitation effect, which comprises the following steps: step S1, establishing the fracturing fluid viscosity reduction simulation experiment system based on ultrasonic cavitation effect, and supplying gas to the cavity to pressurize; step S2, emitting ultrasonic waves, starting the laser measuring mechanism and the infrared observation mechanism, and transmitting data to the data acquisition computer; step S3, data processing; and step S4, setting multiple groups of control experiments, which has the advantages of joint observation, novel conception, ingenious design idea and accurate experimental data.

The utility model discloses an apple sorting machine, which relates to the technical field of sorting machines, aims to solve the technical problem of high production cost caused by large occupied area of the conventional apple sorting machine, and comprises a conveying mechanism and a sorting mechanism, the sorting mechanism comprises a sorting outer cylinder, a sorting inner cylinder coaxially sleeved with the sorting outer cylinder and a sorting assembly arranged in the sorting inner cylinder, the sorting assembly comprises a spiral double-rod sliding rail and a spiral supporting rail located below the spiral double-rod sliding rail, and a gap between double rods of the spiral double-rod sliding rail is gradually increased from top to bottom. According to the apple sorting machine, the sorting mechanism is composed of the inner cylinder and the outer cylinder, the inner cylinder is provided with the variable-diameter spiral double-rod sliding rail, and apples roll to the positions below the corresponding sorting openings through rotation to achieve apple sorting; the sorting outer cylinder is responsible for receiving apples with different sizes and transporting the apples to the conveying groove; the design of the variable-diameter spiral double-rod sliding rail is adopted, a traditional linear sorting track is changed into a spiral sorting track, and therefore the occupied area of the device is greatly reduced.

The invention discloses preparation of a reticular quantum dot color conversion film and a full-color Micro LED display device, and relates to the quantum dot technology, the color conversion film is prepared through quantum dot colloidal solution preparation, polymerization and cross-linking curing, the color conversion film is spin-coated on a blue light LED chip to obtain the high-resolution full-color Micro LED display device, the conception is novel, the design is ingenious, the process is simplified, and the production cost is reduced. The stability of the quantum dots is greatly improved, and the cost is effectively reduced.

The utility model discloses an ostomy bag pouring device which effectively solves the problem that an ostomy bag is inconvenient to pour. Comprising a rectangular box in the left-right direction, an opening of the rectangular box faces rightwards, the left end of the rectangular box is detachably connected with a flushing box, the upper end of the flushing box is connected with a flushing pipe, sliding grooves in the left-right direction are formed in the front side wall and the rear side wall of the rectangular box correspondingly, and sliding plates are slidably connected into the sliding grooves; the front side wall and the rear side wall of the rectangular box are each provided with two vertically-symmetrical guide grooves, the guide grooves are in an inverted L shape and located between the two sliding grooves, rectangular blocks are slidably connected into the guide grooves, and inserting columns inserted into the kidney-shaped grooves in the corresponding sides of the rectangular blocks are fixed to the opposite ends of the rectangular blocks on the front side and the rear side correspondingly. Sliding rods in the left-right direction are fixed to the sides, away from the kidney-shaped grooves, of the rectangular blocks correspondingly, and blocking rods are arranged on the upper side and the lower side of an opening of the rectangular box correspondingly; the device is simple in structure, convenient to operate, novel in conception and high in practicability.

The utility model relates to a road and bridge sand table practical training device, which effectively solves the problems that the height of an urban traffic simulation sand table is inconvenient to adjust and dust is easy to accumulate when the urban traffic simulation sand table is used. Comprising a round bottom plate, an up-down axial supporting cylinder is fixed to the upper end of the bottom plate, a rotating cylinder is rotatably connected to the upper end of the supporting cylinder, a rectangular shell with an upward opening is fixed to the upper end of the rotating cylinder, an up-down axial threaded column is slidably connected into the rotating cylinder through a sliding rail, and the lower end of the threaded column is inserted into the supporting cylinder and is in threaded connection with the supporting cylinder; a subway simulation sand table is arranged in the rectangular shell, a road and bridge simulation sand table located above the subway simulation sand table is arranged in the rectangular shell, the threaded column is slidably connected with the rectangular shell and fixedly connected with the lower end of the subway simulation sand table, a moving groove is formed in the threaded column, and a moving column is slidably connected in the moving groove. The upper end of the moving column penetrates through the subway simulation sand table and is fixedly connected with the lower end of the road-bridge simulation sand table; the device is simple in structure, convenient to operate, novel in conception and high in practicability.

The invention provides a multi-point linkage floating supporting device, and belongs to the technical field of machining. According to the structure of the device, a plurality of positioning seats are fixedly connected to the edge of the upper end of a finish turning tool base, positioning blocks are fixedly connected to the inner sides of the positioning seats, a pressing disc is arranged in the middle of the upper end of the finish turning tool base, a rotating disc is rotationally connected to the upper end of the finish turning tool base, a handle is fixedly connected to the rotating disc, and the rotating disc is connected with a plurality of inclined blocks. The top faces of the inclined blocks are inclined faces, and the lifting columns are located on the inclined faces respectively. The two positioning blocks are used for initial positioning in the diameter direction, and the diagonal puller bolts are used for jacking, so that a positioning surface is reliably positioned; the middle pressing disc is connected to the hub, and the hub is tensioned through the middle pressing bolt, so that the positioning surface is reliably positioned; a plurality of lifting columns are evenly distributed on the periphery and abut against the blank face of a workpiece during semi-finish turning, turning is facilitated, and the lifting function is achieved through rotation of the inclined blocks. During finish turning, the lifting column descends, and workpiece deformation is reduced.

The application discloses a wide-band hat-type feed antenna and belongs to the technical field of satellite communication antennas. The method adopts a light-wall shaped horn loaded with an outer corrugated slot and a choke slot, improves horn and space matching, realizes expansion of a frequency band from 1.6:1 to 2.8:1, loads a slot at the horn mouth and the edge of the choke slot, realizes equalization characteristics of a feed radiation pattern, adopts a small-size sub-reflector to reduce shielding of the reflector, loads double choke slots in the reflector, reduces diffraction of the sub-reflector, and improves antenna radiation efficiency, and uses spline parameterization of the sub-reflector and the main reflector to realize integrated optimization design, so that the frequency bandwidth of the traditional hat-type feed is expanded, and good side lobe and efficiency performance are realized.

A wound compression device effectively solves the problem that postoperative wound compression hemostasis of an interventional patient is inconvenient for medical staff to operate. Comprising a connecting block, a pressing rod is slidably connected into the connecting block, the lower end of the pressing rod penetrates through the connecting block and is provided with a pressing block, an up-down axial fixing disc is fixed to the upper end of the connecting block, a through groove with a downward opening is coaxially formed in the middle of the fixing disc, and the upper end of the pressing rod is inserted into the through groove; the left side of the piston cavity is communicated with the through groove through a connecting hole, an arc-shaped piston rod is slidably connected into the piston cavity, a push block in the vertical direction is arranged on the upper side of the left end of the piston rod, fixing columns are arranged at the left end and the right end of the connecting block respectively, and the two fixing columns are sleeved with fixing belts respectively. An arc-shaped supporting pad is arranged below the connecting block, and positioning grooves are formed in the left side and the right side of the supporting pad respectively. The free ends of the fixing belts penetrate through the positioning grooves in the corresponding sides. The device is simple in structure, convenient to operate, novel in conception and high in practicability.

The invention discloses a detachable turnover side wall for a railway shared flatcar, and belongs to the technical field of detachable turnover side walls, the detachable turnover side wall comprises a side wall main body, turnover dismounting mechanisms and mounting sockets, and the turnover dismounting mechanisms and the mounting sockets are in one-to-one correspondence up and down; the upper mounting side plates are symmetrically fixed to the side wall body front and back, the movable locking block and the lower mounting assembly are located between the upper mounting side plates in the middle, the top end of the movable locking block is hinged to the side wall body, and the bottom of the lower mounting assembly is fixed in an up-down limiting mode after being inserted into the mounting socket. The bottom end of the movable locking block is coaxially hinged to the bottom of the upper mounting side plate and the top end of the lower mounting assembly to form an upper hinged position, and the bottom end of the upper mounting side plate is hinged to the top of the lower mounting assembly to form a lower hinged position vertically corresponding to the upper hinged position. The side wall has the advantages that the mounting stability of the side wall body is high, the potential safety hazard of falling of the side wall body is eradicated, overturning and disassembling operation is simple, and manpower and material resources are saved during cargo loading and unloading.

The present invention discloses a treadmill lifting and folding integrated device, comprising a frame, a first lifting mechanism and a treadmill, wherein the first lifting mechanism is installed on the frame, the front of the treadmill is connected to the first lifting mechanism, and the first lifting mechanism drives the front of the treadmill to lift and lower, when the front of the treadmill is lifted, the slope increases, driving the rear of the treadmill to move toward the frame, the treadmill as a whole is folded and merged relative to the frame, and lifted to the limit and parallel to the frame, that is, the folded state. The folding process of this case is also the process of increasing the slope. This case combines the two into one, uses the same structure to achieve two effects, and the structure is relatively simpler, which can simultaneously meet the user's requirements for labor-saving, space-saving folding and slope adjustment.

The invention relates to a post-picking vegetable illumination preservation device, which effectively solves the problem of short preservation time of existing broccoli in stores; the technical solution thereof comprises a vertical lamp tube, an annular cavity is arranged outside the lamp tube, a plurality of connecting rods are evenly distributed on the upper circumference of each annular cavity, a conical cylinder is rotatably mounted on the outer end of each connecting rod, a reel coaxially fixed with the conical cylinder is arranged below the connecting rod, a rope is wound on the reel, a coil spring which can reset and rotate the reel is coaxially fixed on the reel, a first piston cylinder is fixed at the lower end of each connecting rod, the free end of the rope is fixed on the piston of the first piston cylinder corresponding to the first piston cylinder, a first spring which can reset the first piston cylinder in a direction away from the reel is arranged on the piston of the first piston cylinder, the bottom of the first piston cylinder is connected with the annular cavity via an air pipe, a second piston cylinder is fixed below each connecting rod, and a second spring which can reset the second piston cylinder upward is arranged on the piston rod of the second piston cylinder.

The application discloses a brain electric wire fixing band after intracranial electrode implantation, which effectively solves the problem of inconvenient wire fixation after operation of the patient with implanted electrodes; the brain electric wire fixing band comprises a winding band, a fixing ring is arranged at the left free end of the winding band, the winding band is in a circular ring shape and the right free end of the winding band penetrates through the fixing ring, a positioning air bag is fixed to the inner side of the winding band, connecting rings are respectively fixed to the left and right sides of the upper end of the winding band, a pressing band in the up-down direction is fixed to the middle part of the winding band, two anti-pressure air bags are fixed to the upper end of the winding band and are located between the two connecting rings, the pressing band is located between the two anti-pressure air bags, an inflation device is fixed to the right end of the winding band, the left end of the inflation device is communicated with the positioning air bag through a main air pipe, the upper side of the inflation device is communicated with the right anti-pressure air bag through a secondary air pipe, and the two anti-pressure air bags are communicated through a connecting pipe; the structure is simple, convenient to operate, novel in design and high in practicability.

A coronary stent recovery catheter belongs to the field of medical devices, and discloses a catheter for recovering a coronary stent after it is unloaded, including a recovery tube and a connecting tube, one end of the recovery tube and the connecting tube are fixedly connected, and the other end of the recovery tube is a head end, which is arranged as a bell mouth, and the small end of the bell mouth is integrally connected with the recovery tube, and a fold from the edge to the center is arranged on the bell mouth, so that the bell mouth can be folded and contracted along the fold; the other end of the connecting tube is connected to a handle. The present invention has a simple structure and a novel concept, and can effectively wrap the unloaded stent to pull it back into the guiding catheter, has a high success rate, has low requirements on the operator, and can prevent the stent steel beam from scratching and damaging the inner wall of the head end of the guiding catheter.

A spinal pedicle screw implantation surgery navigation template and its preparation and use method, wherein the spinal pedicle screw implantation surgery navigation template comprises a positioning navigation body and a locking piece having a fitting plate, a locking platform and a positioning guide member, wherein the fitting surface of the fitting plate is used to fit with the surface of the vertebral plate on one side of the spine where the pedicle screw of the patient who needs to undergo pedicle screw implantation surgery is implanted, the locking platform is arranged in the middle of the working surface of the fitting plate and is provided with a fixing hole, the positioning guide member is arranged at the edge of one side of the working surface and is provided with a guiding channel, the guiding channel is used for implanting the pedicle screw to be implanted on the pedicle of the patient's spine, and the locking piece is used to fix the positioning navigation body on the vertebral plate of the patient's spine where the pedicle screw to be implanted is implanted through the fixing hole. The present invention can fix the entire positioning navigation body on the vertebral plate of the patient's spine where the pedicle screw to be implanted is implanted, and the surgery can be performed by only fixing it on the unilateral vertebral plate of the patient's spine, with less surgical dissection, smaller incision, and better medical effect.