62results about How to "Closely attached" patented technology

The present application relates to a transcatheter valve replacement system. The system includes a valve replacement prosthesis, a delivery catheter, a control handle and an anchoring device; the valve replacement prosthesis includes a valve stent, an artificial valve leaflet and an adaptive covered stent, the artificial valve leaflet is arranged in the valve stent, the adaptive covered stent is connected to the outer periphery of the valve stent, the valve replacement prosthesis is provided with an anchored unit, and the anchored unit is fixed to heart tissue by the anchoring device; and theanchoring device is arranged in the delivery catheter, the anchoring device includes an anchoring needle, an anchoring needle catheter, an anchoring needle push rod, and a controllable guiding device,the anchoring needle is pre-installed in the distal end of the anchoring needle catheter, the distal end part of the anchoring needle catheter has a flexible structure, one end of the controllable guiding device is detachably connected to the anchored unit, and the controllable guiding device can control the distal end part of the anchoring needle catheter to form a fixed bend angle in the radialdirection and make the distal end of the anchoring needle catheter adhered to the anchored unit.

The present invention relates to a sealing and guiding arrangement for sealing against a piston (6) of a pump, comprising a guide ring (21), a support ring (22) and a sealing element (23), wherein the support ring (22) is arranged between the sealing element (23) and the guide ring (21), and a contact area of the guide ring (21) with respect to the support ring (22) has at least one region (21a) which is situated outside a plane (E) perpendicular to a longitudinal axis (X-X) of the piston, wherein the region is arranged so as to be inclined with respect to the plane (E).

The invention provides a dot blot hybridization reaction device and application thereof, and an immunoblotting detection method and relates to the technical field of molecular hybridization experimental devices. The dot blot hybridization reaction device comprises a sampling infiltration module and a suction filtration module used for supplying a negative pressure environment for the interior of the sampling infiltration module, wherein the sampling infiltration module comprises a micropore sampling plate provided with a sample through hole, a support layer provided with an infiltration through hole corresponding to the sample through hole, and a suction filtration tank; a first actuation unit is arranged in the micropore sampling plate; a second actuation unit matched with the first actuation unit is arranged in the suction filtration tank; a closed inner chamber is formed by the matched actuation units in the manner of adsorbing and fixing; and a hybridization film layer and the support layer are successively fixed under the micropore sampling plate. The dot blot hybridization reaction device is portable, is simple in operation and can effectively prevent the problem of cross contamination of sample rooms of the dot blot hybridization reaction device.

A teat cup to be attached to a teat of an animal to be milked comprises a connector (2) and a cartridge (1) to be received in the connector (2). The cartridge comprises a sleeve (6) having an upper end (6a) and a lower end (6b), a teat cup liner (7) mounted in the sleeve and having an inner space (8) for receiving said teat, and a pulsation chamber (9) provided between the sleeve and the teat cup liner. The teat cup liner comprises an upper end portion (7a) located at the upper end of the sleeve, a barrel portion (7c) and a lower end portion (7b) extending beyond the lower end of the sleeve, The lower end portion forms an end nozzle (10) extending beyond the lower end of the sleeve and having a circumferential external surface (10a). An annular seal element (11) is provided at the circumferential external surface to seal between the lower end nozzle and the connector.

The invention discloses an electrochemical transducer based on graphene oxide. The electrochemical transducer comprises a base plate, an electric conduction layer, a reaction area, a cover plate and a spacing layer , wherein the electric conduction layer is arranged on the base plate, and the spacing layer is arranged between the base plate and the cover plate and is provided with a groove with an opening; the reaction area is defined by the spacing layer with the groove, the base plate and the cover plate and is mainly prepared from the graphene oxide and glucose specific enzyme. The invention further discloses a method for preparing the electrochemical transducer based on the graphene oxide. By utilizing the preparation method, the simple and feasible electrochemical transducer with easiness in use and high analysis speed and measurement precision can be obtained.

The invention discloses a method and a device for coating a film to a hang tag of black card clothes. The method comprises the following steps: a, coating glue to the surface of a plastic film; b, drying the glue on the plastic film; and c, rolling the plastic film to a piece of black card paper by adopting the pressure of 15MPa, wherein the rotating speed of a pressing roll used for rolling is 80 to 100 rpm, the black card paper coated with the plastic film is secondarily rolled after the rolling, and the pressure of the secondary rolling is 25 to 30MPa. The device consists of a glue coating device, a glue drying device and a rolling device which are connected in turn through a carrying roll, wherein a calendaring nose is arranged behind the rolling device. The method and the device for coating the film to the hang tag of the black card clothes have the advantage of improving the quality of the hang tag of the black card clothes, manufacture finer hang tag of the black card clothes, and overcome the defect that the conventional hang tag of the black card clothes is easy to produce white light spots.

The invention discloses a heating type wrist guard smart watch with a health care function, relating to the technical field of smart watches. The watch specifically comprises a dial, massage mechanisms, a watch base and a watchband. A display screen is mounted on one side of the upper surface of the dial; a control panel is arranged on the other side of the upper surface of the dial; the massage mechanisms are arranged on the lower surface of the dial at equal intervals; a watch base is arranged below the dial; the watchband is adhered to the bottom of the watch base; the massage mechanism comprises a fixing rod base, a hollow cylinder, a driver, a rotating shaft, a rubber hollow ball and a magnetic ball, the hollow cylinder is fixed to the bottom end of the fixing rod base, the driver isinstalled on the upper portion of the interior of the hollow cylinder, the top end of the driver is fixed to the bottom surface of the fixing rod base, and the rubber hollow ball is fixed to the bottom end of the rotating shaft. The heating type wrist guard smart watch with the health care function has the massage health care function, can heat the wrist, and has a good protection effect on the wrist.

The invention provides a camera module and a working method thereof. The camera module comprises a moving unit, a fixing unit and at least one locking structure; the moving unit comprises a lens module and is suitable for driving the lens module to move in the optical axis direction; and the fixing unit is suitable for bearing the moving unit, and the locking structure is arranged in the fixing unit and is suitable for locking or unlocking the moving unit. According to the camera module and the working method thereof provided by the invention, the lens module can have a relatively large movingstroke.

The invention provides an opening and closing accelerating mechanism of a vacuum circuit breaker, belonging to the technical field of high-voltage switchgear. The utility model solves the problem thatthe arc extinguishing effect of the existing vacuum circuit breaker is poor when the vacuum circuit breaker is switched on and off. A switch open and closing accelerate mechanism A vacuum circuit breaker includes a base body, driving mechanism, insulated tie rods and vacuum interrupters, A switch open and closing acceleration mechanism include a connecting shaft, connecting rod and elastic element, the two ends of the connecting shaft are respectively connected with an insulating tie rod and a driving rod, the two ends of the connecting rod are respectively articulated with a connecting shaftand an elastic unit, The elastic unit can store energy along the radial force of the connecting shaft and make the connecting rod always have thrust to one side of the connecting shaft. When the switch is opened or closed, the connecting rod can swing up and down around one end of the connecting rod and the elastic unit hinge. After the switch is closed, one end, hinged with the connecting rod ofthe connecting shaft is inclined upward, and after the switch is opened, one end, hinged with the connecting rod of the connecting shaft is inclined downward. The invention can not only improve the opening and closing speed of the arc extinguishing chamber, but also keep the stable connection between the movable contact and the static contact after the arc extinguishing chamber is closed.

A top for a convertible has a top linkage forming a lateral roof frame at each side, and a flexible covering which is stretched open when the top is closed and covers at least parts of the top. When the top is closed, a seal is disposed between a stiffened region of the stretched-open covering, which region faces the associated lateral roof frame, and the associated lateral roof frame.

The invention discloses equipment and a method for determining the height of a semiconductor structure, and belongs to the technical field of semiconductors. The equipment for determining the height of the semiconductor structure comprises a mounting rack and further comprises a negative pressure box fixedly connected to the mounting rack, wherein one side of the negative pressure box has an opening; a box door which is rotationally connected to the opening; and a sleeve which is fixedly connected to the top part of the negative pressure box, wherein one end of the sleeve is communicated with the negative pressure box, and the sleeve is made of a transparent material. By adopting the equipment, a plurality of semiconductors can be measured at a time through using a stacking method, the average height value of the semiconductors of the same batch and the same model is further obtained, the semiconductors are limited through the sliding plate during measurement, the stability of the semiconductors during measurement is improved, the measurement precision is further improved, and the average value is calculated by reading the measurement scales; and the equipment is convenient, fast, high in measurement efficiency and high in measurement accuracy.

The invention provides an ultraviolet lamp tube fixing device in a marine ballast water system. The ultraviolet lamp tube fixing device is provided with a supporting sleeve. Elastic supporting legs are arranged on the outer wall of the supporting sleeve. A lamp tube installing plate is arranged at one end of the supporting sleeve. An installing hole is formed in the middle of the lamp tube installing plate. At least three strip-shaped fixing elastic pieces are uniformly distributed on the inner wall of the installing hole in the peripheral direction. One end of each fixing elastic piece is fixedly connected to the inner wall of the installing hole, and the other end of each fixing elastic piece is bent towards the interior of the supporting sleeve. The lamp tube installing plate is round. Ventilating and heat dissipating notches are uniformly distributed in the periphery of the lamp tube installing plate. The installing hole in the middle of the lamp tube installing plate is a round hole. Arc-shaped installing grooves are uniformly distributed in the inner wall of the installing hole in the circumferential direction. The fixing elastic pieces are installed in the installing grooves. The included angle of 2-10 degrees is formed between the part, bent into the supporting sleeve, of each fixing elastic piece and the axis of the installing hole. The ultraviolet lamp tube fixing device is simple in structure, low in cost, easy and convenient to install and good in damping and buffering effect, and an ultraviolet lamp tube can not be damped easily and is long in service life.

The invention discloses an electromagnetic release and electrical protection equipment comprising the same, and relates to the technical field of electromagnetic tripping devices. The electromagnetic release provided by the invention comprises a U-shaped magnet yoke, an armature, a permanent magnet and a reset spring, and further comprises an air gap maintaining device which is used for enabling an air gap between the permanent magnet and the armature to be a constant preset value when the armature is attached to the two polar surfaces of the magnet yoke end, when the armature is attached to the polar surfaces of the two branches of the magnet yoke through the air gap maintaining device, the air gap between the permanent magnet and the armature is constantly kept at a preset air gap value, so that the attraction force of the magnet to the armature is constant, the work of the electromagnetic release is reliable and stable, the balance moment of the reset spring and the magnet is conveniently and accurately designed, the moment balance of the reset elastic piece and the permanent magnet can be destroyed by adopting a small current, the scheme of the low-power electromagnetic release becomes possible, and the low-power electromagnetic release is suitable for low-power-consumption and low-current use working conditions.

The invention provides an extruder on a power line preparation device, which belongs to the technical field of wires and cables. The technical problem that the insulting layer on a wire is unevenly distributed and the surface of the insulating layer is not skid-resistant is solved. The preparation device includes a steel pipe. The extruder includes a shell, an extrusion screw, and a feed pipe. The shell is tubular, and is provided with an extrusion nozzle at one end. A hollow feed rod perpendicular to the shell is arranged on the shell. The extrusion screw is inserted into an extrusion rod. The feed pipe is communicated with the cavity of the extrusion rod. An impeller is fixedly arranged at the upper end of the extrusion screw. The impeller is positioned in the steel pipe. The two ends of the steel pipe are connected with an oil pump through hoses. The steel pipe is filled with hydraulic oil. The extruder has the advantages of uniform thickness distribution of the insulating layer and a good antiskid effect.

The invention discloses a coronary sinus space bend mapping electrode catheter. In order to solve the technical problem that the operating difficulty is reduced, the coronary sinus space bend mappingelectrode catheter is provided with a catheter body, a handle device and a connector from the far end to the near end in sequence, wherein the catheter body is provided with an end electrode, a double-hole tube and a main catheter body starting from the far end in sequence, and the end electrode, the double-hole tube and the main catheter body are connected in sequence. The double-hole tube is made from block polyether amide resin or polyurethane or block polyamide or nylon, and a pull line steel wire is connected between the end electrode and the handle device. Compared with the prior art, the far end of the catheter body is bent into an L-shaped annular plane, and an angle is formed between the L-shaped annular plane and the catheter body so that the electrode at the far end of the catheter body can easily enter the orifice of the coronary sinus, the electrode is closely attached to the inner wall of the coronary sinus, and it is ensured that in the operating process, the electrode does not slide out of the orifice of the coronary sinus. Through computer three-dimensional cardiac electrophysiology mapping data, the chambers of the heart of a patient can be directly and quickly subjected to three-dimensional imaging, three-dimensional modeling is completed, the operating effectiveness and operability are greatly improved clinically, and the operating time is saved.

The invention provides a refrigerator. The refrigerator comprises a box body and a push-pull type open-close drawer, wherein the push-pull type open-close drawer can be arranged in the box body in a front-and-back push-pull manner, and when the drawer is closed, the drawer is pushed back to a back limit position firstly, then rebounds forwards by elastic force for a preset distance and then is locked to the box body. The drawer comprises a drawer body for storing articles, a front frame vertically arranged on the front side of the drawer body and made of metal materials, and a glass panel fixedly mounted to the front frame such that the front frame surrounds the glass panel. When a user pushes the push-type open-close drawer manually, the push deformation of the drawer is reduced, so thatthe drawer can move more smoothly, the noise generated by collision of the push-pull type drawer and an upper cover in the closing rebounding process can be reduced, and the sealing performance between the drawer and the upper cover is enhanced.

The invention relates to the field of boring tools, in particular to a chamfering sleeve boring tool comprising a tool apron used for being installed on a machine tool, multiple sets of blades installed on the tool apron at intervals in the axial direction of the tool apron and used for machining a shaft, and an adjusting assembly arranged on the tool apron and used for adjusting the positions ofthe blades. The machining diameters of the multiple sets of blades are gradually increased in the direction from the side away from a workpiece to the side close to the workpiece, and each set of blades are symmetrically arranged along the axis of the tool apron. By means of the chamfering sleeve boring tool, all parts, with different diameters, of the stepped shaft can be machined at the same time, convenience is achieved, and the working efficiency is improved.

The invention relates to an antirust film applicable to a door. The antirust film consists of a high-permeability layer, a high-barrier layer and an adhesive layer between the high-permeability layer and the high-barrier layer. The antirust film is characterized in that the high-permeability layer is a PVC (polyvinyl chloride) film containing a gas phase antirust agent; the high-barrier layer is made of nylon; the adhesive layer is made of a polyurethane foaming adhesive and a polypropylene resin pressure-sensitive adhesive. The high-permeability layer is capable of guaranteeing effective diffusion and volatilization, so that the antirust film is good in antirust performance; the high-barrier layer has a high-barrier effect on water vapor and oxygen and also can effectively prevent the volatilization loss of components of a gas phase inhibitor.

The invention discloses a high-safety floor heating system. The high-safety floor heating system comprises a hot water coil pipe, a control device and a temperature control probe, wherein the hot water coil pipe is laid on the ground; the control device comprises a control circuit; the temperature control probe is electrically connected with the control circuit; one end of the hot water coil pipeis a water inlet; the other end of the hot water coil pipe is a water returning opening; a heating cable is arranged inside the hot water coil pipe in a penetrating manner; the two ends of the heatingcable are electrically connected with the control circuit after correspondingly penetrating out of the water inlet and the water returning opening; the control device comprises a water pump; and thewater pump is correspondingly connected with the water inlet and the water returning opening via connecting pipelines. The high-safety floor heating system disclosed by the invention can realize the uniformity of temperature increment of an overall room and effectively eliminates potential safety hazards caused by over-high temperature increment.

The invention relates to the technical field of membrane electrode production equipment, and provides carbon paper laminating equipment and a process method for producing a carbon membrane electrode through the carbon paper laminating equipment. The carbon paper laminating equipment comprises a die cutting rack; a carbon membrane conveying roller is arranged on the die cutting rack, and the carbon membrane conveying roller is connected with a bottom membrane separation tool apron and a bottom layer carbon paper transfer laminating tool apron; a bottom layer carbon paper conveying roller is further arranged on the die cutting rack and connected with a bottom layer carbon paper transfer laminating tool apron through a bottom layer carbon paper conveying tool apron, and the bottom layer carbon paper transfer laminating tool apron is connected with a bottom membrane pressing tool apron, an upper membrane separating tool apron and an upper layer carbon paper transfer laminating tool apron. An upper-layer carbon paper conveying roller is further arranged on the die cutting rack and connected with an upper-layer carbon paper transfer laminating tool apron through an upper-layer carbon paper conveying tool apron, the upper-layer carbon paper transfer laminating tool apron is connected with a heat sealing assembly, and the heat sealing assembly is connected with an outer frame cutting tool apron and an outline cutting tool apron through a carbon membrane conveying tool apron. According to the invention, the functions of automatic feeding and laminating of carbon paper in the membrane electrode manufacturing process are realized, and the production efficiency is improved.

The invention provides a rotating shaft mechanism capable of rotating by 360 degrees and electronic equipment. The rotating shaft mechanism comprises a first shaft body, a second shaft body, a first torsion mechanism and a second torsion mechanism, wherein the first shaft body and the second shaft body are symmetrically arranged. The first torsion mechanism and the second torsion mechanism correspond to the two shaft bodies and are the same in structure. The first torsion structure comprises a first concave wheel and a first cam which generate torsion through friction. The first concave wheel comprises a first concave pit and a second concave pit which are formed at different positions of the concave surface; the first cam comprises a first convex block and a second convex block which are arranged at different positions of the convex surface, the two concave pits and the two convex blocks are respectively provided with a first side edge, a second side edge, an outer side edge and an inner side edge, and the first side edges and the second side edges are respectively formed by a slope and linearly extend along the radius direction of a wheel body; and when the rotating shaft mechanism moves from a first angle to 0 degree, the first side edge of the first convex block is located between the first side edge and the second side edge of the first concave pit and moves towards the second side edge, and when the rotating shaft mechanism moves to 0 degree, a first specific distance exists between the first side edge of the first convex block and the second side edge of the first concave pit.

The invention discloses a valve seat sealing mechanism applicable to low temperature working conditions. A lip seal ring is arranged between a valve seat and a valve body; a support spring ring is arranged between two lips of the lip seal ring; a pressing ring is further arranged between the valve body and the valve seat; a pretensioned spring is arranged between the pressing ring and the valve body; and the pretensioned spring drives the pressing ring to abut against the valve seat and the support spring ring. The valve seat sealing mechanism has the beneficial effects that on the one hand, the valve seat can be closely attached to a ball body, so that the ball body and the valve seat have good sealing performance, and on the other hand, acting force is applied to the support spring ringthrough the pressing ring, and the lip seal ring is deformed by compression of the support spring ring, the lips are opened, so that the lip seal ring is attached to the valve body and the valve seatmore closely, even at a very low temperature, the lips of the lip seal ring are contracted to a certain extent, reliable sealing of the lip seal ring can still be ensured, and the better sealing between the valve seat and the valve body is achieved.

The invention relates to the technical field of mobile camera platforms, in particular to a mobile camera platform for target tracking, which comprises a support shell, the support shell comprises two symmetrically distributed panels, two symmetrically distributed linkage gears are rotatably connected between the two panels, a positioning column is in meshing transmission between the two linkage gears, and the positioning column is in meshing transmission with the two panels. A rectangular through hole is formed in the top of the positioning column, a positioning block is slidably connected to the interior of the rectangular through hole, supporting blocks are fixedly connected to the two ends of the positioning block, and a driving roller is rotatably connected between the two supporting blocks. According to the invention, through meshing transmission of a first bevel gear on a first connecting shaft and a second bevel gear on a shaft rod, the shaft rod drives a sleeve to rotate, then the sleeve drives a driving shaft to rotate, and a [-shaped shaft and an L-shaped shaft on the driving shaft can pull a pulling rope between a rotating sleeve and a camera in the rotating process, so that the camera moves along an arc-shaped guide rail; the orientation of the camera lens can be flexibly adjusted, and photos at different angles can be conveniently shot.