26results about How to "Avoid piercing" patented technology

The invention discloses a vertical-structure LED chip and a manufacturing method thereof, and relates to the technical field of semiconductors, and the manufacturing method comprises the steps of epitaxial growth, first-round photoetching processing, eutectic bonding, substrate stripping, second-round photoetching processing and chip segmentation. Wherein a pretreatment structure is obtained after the substrate is stripped, and the N-GaN layer is exposed on the surface of the pretreatment structure; the second round of photoetching processing comprises the following steps: etching the exposed N-GaN layer to form an N hole protection structure; and carrying out roughening treatment on the surface of the N-GaN layer on which the N hole protection structure is formed. According to the invention, the N hole protection structure is formed on the N-GaN layer, so that the hole channel formed by processing the P-GaN surface can be effectively protected, and the electric leakage risk of the LED chip with the vertical structure can be reduced.

The nimodipine injection production equipment comprises a liquid preparation device, a cleaning device and a filling and capping device, the liquid preparation device comprises a liquid preparation tank, the bottom of the lower end of the liquid preparation tank is connected with the upper end of a filter box through an electromagnetic valve, and a pressure detector is arranged on one side of the top of the upper end of the filter box; meanwhile, the front face of the filter box is detachably connected with the filter assembly through a plurality of electromagnetic columns, the lower end of the filter box is connected with a first circulating pipe and a liquid conveying pipe through a three-way valve, the other end of the first circulating pipe is connected with the upper end of one side of the filter box, and the cleaning device comprises a bottle washing device and a plug washing device. According to the nimodipine injection production equipment, a sectional liquid preparation procedure is adopted, injection water is added firstly, then auxiliary materials are added, and finally raw materials are added, the materials are completely transferred into a liquid preparation tank through rinsing operation in each step, meanwhile, a filter element in the nimodipine injection production equipment is detached and replaced after being used for a single time, so that the filter element is prevented from being perforated, and the production efficiency of the nimodipine injection is improved. The production risk of the nimodipine injection is further reduced.

The invention relates to a metal etching preparation process, and belongs to the technical field of etching liquid. The metal etching preparation process comprises the following steps of: after coating photoresist on a metal sheet, performing mask exposure and development treatment on a photoresist layer on the surface of the metal sheet; spraying an etching solution on the metal sheet, and etching the part, which is not covered by the photoresist, of the metal sheet; and cleaning and degumming the etched metal sheet, grinding the metal sheet in a grinding machine, and drying the metal sheet after ultrasonic cleaning. By improving the production process and finely etching and grinding the metal sheet, the problem of perforation is effectively avoided, sufficient hardness of the metal sheet is ensured, and deformation is prevented; the metal complexing agent contains an organic heterocyclic compound containing nitrogen, oxygen and sulfur heteroatoms, has a plurality of active adsorption sites, can be effectively adsorbed to the surface layer of metal copper to form a protective film, prevents copper corrosion, ensures that an etching solution keeps an excellent etching speed, and prevents excessive lateral erosion.

The invention provides a preparation method of a metal lithium powder composite electrode containing a BIMSM binder, and the method comprises the following steps: S1, dissolving a brominated isobutylene-p-methylstyrene copolymer in a first organic solvent to obtain a pre-coating solution; s2, in an inert atmosphere, adding metal lithium powder into the pre-coating solution for dispersing and mixing, and then removing the solvent and drying to obtain modified metal lithium powder coated with a BIMSM layer on the surface; s3, dispersing the modified metal lithium powder, butadiene styrene rubber, a conductive agent and a cross-linking agent in a second organic solvent, and uniformly mixing to obtain electrode slurry; and S4, coating the surface of a current collector with the electrode slurry, heating, drying and rolling to obtain the metal lithium powder composite electrode. The metal lithium powder composite electrode prepared by the invention effectively inhibits volume expansion and dendritic crystal growth of metal lithium, and the cycle life and coulombic efficiency of the battery are remarkably improved.

The utility model relates to 3C accessory technical field, concretely relates to a flexible support, including flexible support body, the connecting piece that is connected with the end part of flexible support body, and respectively set up in the length direction both ends of flexible support body, the mount for connecting electronic equipment and the mount for fixing the fixed object of fixing flexible support in, flexible support body includes flexible support board, and the protective adhesive layer that covers in the surface of flexible support board, the one end of connecting piece part is connected with flexible support board, and the other part is connected with mount or mount, the protective adhesive layer from the surface of flexible support board integral extension reaches the connecting piece, and at least part covers in the surface of connecting piece.

The application discloses a preparation method of a single-crystal metal lithium negative electrode. The single-crystal metal lithium negative electrode with a dense packing surface Li(110) is obtained by annealing a polycrystal metal lithium foil horizontally placed after being heated in vacuum or inert atmosphere, and is directly used for battery assembly. The application remarkably improves the electrode reaction process kinetics of the metal lithium negative electrode by reducing the self-diffusion barrier of the surface of the metal lithium negative electrode, widens the safety boundary of the metal lithium negative electrode, and enables the metal lithium negative electrode to have no dendrite growth in a practical current density range. The prepared single-crystal metal lithium negative electrode can be directly used for battery assembly, and remarkably improves the cycle stability and safety of a high-specific-energy metal lithium battery, and promotes the development of practical high-safety metal lithium batteries.

The utility model discloses a jeans shipping mark containing structure which comprises a jeans body, an elastic waistband is installed at the top end of the jeans body, an installation strip is fixedly installed on one side of the bottom end of the elastic waistband, a containing bag located on one side of the installation strip is installed on the elastic waistband, and a shipping mark body is installed at the bottom end of the installation strip. According to the shipping mark storage structure for the jeans, the shipping mark body and the storage bag are arranged, a jeans wearer stores the shipping mark body in the storage bag, the shipping mark body is prevented from being in direct contact with the skin, the shipping mark is prevented from being damaged, and the shipping mark is prevented from being damaged. Meanwhile, the storage bag can be used for storing small articles, so that the storage capacity of the jeans is increased; by arranging the first pocket, the second pocket and the tool pocket, a jeans wearer can store articles in the corresponding pocket according to actual needs, and the jeans wearer can take and use the articles conveniently.

The invention relates to a profile steel penetration-free type connecting joint based on UHPC composite beams and columns and a construction method. A left side precast beam and a right side precast beam of the connecting joint further comprise profile steel which is fixed to the corresponding precast beams in a concrete pouring mode to form an integral structure. One end of the profile steel comprises an upper flange plate, a lower flange plate and a middle web plate connected between the upper flange plate and the lower flange plate, the lower flange plate is located on the inner side of the precast beam concrete, the upper flange plate is located on the upper side of the precast beam concrete, and a vertical connecting steel plate is fixedly welded to the upper side of the upper flange plate; the vertical connecting steel plate is provided with a plurality of connecting holes arranged at intervals in the left-right direction, the connecting joint further comprises connecting ring ribs corresponding to the connecting holes, the left ends of the connecting ring ribs are installed in the corresponding connecting holes in the left side precast beam in a penetrating mode, and the right ends of the connecting ring ribs are installed in the corresponding connecting holes in the right side precast beam in a penetrating mode. According to the UHPC-based composite beam and column penetration-free type connecting joint and the construction method, the connecting strength between the beam and the column can be improved.

This invention proposes a multi-degree-of-freedom gastrointestinal surgical robot system, belonging to the field of medical robot technology. It includes a platform with a pair of guide rails on its end face; a main arm drive device mounted on the platform, its output end connected to one end of the main arm to provide power to the main arm, which is hollow inside; a deployment mechanism mounted on the other end of the main arm away from the platform; two sub-arm drive devices respectively mounted on the platform and slidably connected to the guide rails; the output ends of the two sub-arm drive devices pass through the main arm and extend into the deployment mechanism to provide power to the deployment mechanism; the deployment mechanism includes a snake-bone tube and a force-sensitive elastomer clamping unit. The snake-bone tube includes several sequentially arranged rotary joints, adjacent rotary joints are hinged together, the interior of the first rotary joint communicates with a channel inside the main arm, and the last rotary joint is connected to the force-sensitive elastomer clamping unit. Clamping force and three-dimensional force sensing are achieved through inverse kinematics calculation.

The utility model relates to a saddle type endoscopic surgery hole towel with a storage bag. The saddle type endoscopic surgery hole towel comprises a surgery hole towel body, a first hole towel piece and a second hole towel piece. The first hole towel piece and the second hole towel piece are combined to form the operation hole towel main body with a double-layer structure. Due to the design, the durability and the stability of the operation hole towel are enhanced, and pollution and cross infection in the operation process are effectively prevented. Meanwhile, the double-layer structure also increases the water and bloodstain absorbing capacity of the surgical hole towel, so that the surgical process is cleaner and safer, the accommodating groove not only can store large surgical instruments such as an ultrasonic knife and an electric knife, but also can resist high temperature and corrosion, and the problem that a hole is perforated due to the fact that the knife head is hot is avoided. Compared with a disposable film storage bag, the cloth simple substance storage groove is more durable and practical, and can meet the requirement of long-time operation. Meanwhile, due to the design, the operation cost is reduced, and the repeated utilization rate of the operation hole towel is improved.

The application belongs to the technical field of medical devices, and specifically provides a uterine curettage device for gynaecology and obstetrics, which comprises a supporting pipe, one end of the supporting pipe is provided with a flexible plug, the end of the supporting pipe away from the flexible plug is provided with a handle type operating mechanism, an adjustable scraping mechanism is slidably arranged in the supporting pipe, the adjustable scraping mechanism is installed on the upper part of the handle type operating mechanism, and the end of the adjustable scraping mechanism away from the supporting pipe is installed with a collecting mechanism; the uterine curettage device for gynaecology and obstetrics can conveniently adjust the penetration depth of the operating pipe and effectively avoid repeated and excessive scraping, a hidden cutting knife is adopted, the endometrial state is protected, the uterus is prevented from being perforated, and the pain of the patient is reduced; in addition, the uterine cavity tissue is collected in a negative pressure adsorption mode, the collecting chamber is divided into multiple convertible chambers, the uterine cavity samples at different positions can be conveniently sampled, and the accuracy of pathological diagnosis is improved.

The invention relates to the technical field of polymer composite material processing, and discloses a blending extrusion preparation method of a plant fiber reinforced biodegradable foaming material, which comprises the following steps: firstly, preparing polycaprolactone glycol, zinc isoocatanoate and absolute ethyl alcohol into a polar cosolvent system; the plant fibers are deagglomerated by utilizing the permeation effect of the solvent and a hydrogen bond damage mechanism; then, in a first extruder, a melt sealing material is formed through base resin in a specific proportion to maintain the vacuum degree of a middle-section devolatilization area, and it is ensured that absolute ethyl alcohol is completely removed; in the rear section of the extruder, zinc isoocatanoate immobilized on the surface of the fiber is utilized to catalyze the polyfunctional group epoxy chain extender to generate in-situ ring opening grafting, and a flexible transition layer is constructed on the interface of the fiber and the resin. The problems that plant fibers are prone to agglomeration and poor in resin interface bonding force are solved, the melt strength of a composite system is improved, and the prepared foaming material is uniform in foam hole and stable in performance and has good industrial application prospects.

This invention proposes a multi-degree-of-freedom gastrointestinal surgical robot system, belonging to the field of medical robot technology. It includes a platform with a pair of guide rails on its end face; a main arm drive device mounted on the platform, its output end connected to one end of the main arm to provide power to the main arm, which is hollow inside; a deployment mechanism mounted on the other end of the main arm away from the platform; two sub-arm drive devices respectively mounted on the platform and slidably connected to the guide rails; the output ends of the two sub-arm drive devices pass through the main arm and extend into the deployment mechanism to provide power to the deployment mechanism; the deployment mechanism includes a snake-bone tube and a force-sensitive elastomer clamping unit. The snake-bone tube includes several sequentially arranged rotary joints, adjacent rotary joints are hinged together, the interior of the first rotary joint communicates with a channel inside the main arm, and the last rotary joint is connected to the force-sensitive elastomer clamping unit. Clamping force and three-dimensional force sensing are achieved through inverse kinematics calculation.

The invention relates to the technical field of lithium ion batteries, in particular to a battery and a preparation method of a lithium ion battery pole piece. The method comprises the following steps: confirming a first coating area and a second coating area of a current collector; coating the first coating area with graphite slurry or lithium cobalt oxide slurry to form an isolation coating; coating ternary material slurry on the second coating area and the isolation coating to form an active substance layer; in the thickness direction of the current collector, the isolation coating isolates the active substance layer from the current collector; and carrying out laser cleaning on the active material layer of the first coating area and the isolation coating until the part for welding the tab on the current collector is exposed, so as to prepare the pole piece. By adopting the mode, the cleaning difficulty can be reduced, and the laser cleaning optimal rate is increased.

The invention discloses a single-ion gel electrolyte with a semi-interpenetrating network structure and a preparation method of the single-ion gel electrolyte. According to the electrolyte, a natural macromolecular sulfonated product is used as a fixed anion carrier, ZnO is used as a zinc ion source, a semi-interpenetrating network structure is constructed, and unification of high cation concentration, low corrosivity, high mechanical strength and excellent ionic conductivity is achieved. The flexible zinc ion battery is prepared in an in-situ polymerization manner, is simple in process and is suitable for the flexible zinc ion battery. The problems of small cation introduction amount, serious electrode corrosion, poor mechanical property and the like in the traditional single-ion electrolyte are effectively solved, and the single-ion electrolyte has a wide application prospect.

The invention discloses an acupuncture protection device and method, and belongs to the technical field of infusion needle protection tools, the acupuncture protection device comprises a base, the lower end of the base is detachably connected with a fixing plate through a screw, a pasting notch is formed between the fixing plate and the base, and a pasting adhesive tape is pasted in the pasting notch. According to the infusion apparatus, when a medium between the two induction sheets changes after infusion is completed, a control template can detect the change of a capacitance value between the two induction sheets at the moment, after the control template detects the capacitance change, a driving motor is immediately powered on, so that an abutting block is separated from a hole groove, and at the moment, a force application rod is immediately lifted upwards under the action of a torsion spring; by means of the mode, the situation that the patient and the medical staff miss the needle withdrawing time to cause blood return can be avoided, and the problem that when the medical staff withdraws the needle with hands, the needle head scratches the hands of the medical staff to cause infection can also be avoided.

The present invention discloses a tool and vulcanization method for integral vulcanization of lining rubber materials of large-scale equipment in nuclear power plants, wherein the tool comprises a split steel plate, a supporting element, an end sealing cover plate I and an end sealing cover plate II. The method comprises: step one, sandblasting and surface treatment; step two, cleaning the sandblasted surface; step three, applying adhesive; step four, laying the semi-finished lining product; step five, loading the split steel plate and the end sealing cover plate I; step six, installing the supporting element; step seven, installing the end sealing cover plate II; step eight, transferring the equipment into a drying room, connecting the high-temperature air pipe of the drying room with the inner cavity of the pipe body; step nine, treating the equipment at 170°C; step ten, disassembling the supporting element; step eleven, trimming the rubber edge, and completing the integral compounding of the rubber lining and the inner wall of the equipment. The rubber-lined equipment obtained by the method of the present invention meets the 60-year life requirement of the nuclear power plant, can greatly reduce the maintenance cost of the nuclear power plant, and reduce the risk brought by equipment replacement.

The invention relates to the technical field of wind power equipment, and discloses a fan blade lightning receiving system and a thunder and lightning protection method of a fan blade. According to the wind turbine blade lightning arresting system, the lightning arresting device, the downlead and the metal coating are arranged, so that the damage degree of thunder and lightning to the blade structure can be remarkably reduced, and even if the surface of the blade is directly struck by the thunder and lightning, the blade is prevented from being directly punctured by the thunder and lightning by forming the electromagnetic shielding layer; therefore, the generated electric arc can be discharged under the attraction of the lightning arrester and the diversion effect of the down lead. And meanwhile, the blade can be prevented from being perforated due to electric and thermal composite breakdown, and the lightning stroke protection capability of the blade is improved.

The invention relates to the technical field of orthopedic surgery tools, and provides a steel wire guiding device for orthopedic surgery. The device comprises a handle, a wire passing groove, a placing mechanism, a fixing mechanism and an unlocking mechanism. According to the steel wire guiding device, the placing mechanism is arranged, the worm is rotated to drive the auxiliary guide pipe to be completely attached to the main guide pipe to form a complete arc-shaped pipeline, a user can conveniently use the steel wire guiding device, and in the process, the auxiliary guide pipe is driven to be attached to the main guide pipe to form a complete arc-shaped pipe; the steel wire placed between the auxiliary guide pipe and the main guide pipe is placed after the auxiliary guide pipe and the main guide pipe are closed, the situation that the steel wire needs to be perforated manually is avoided, the steps needed when the steel wire is placed are remarkably simplified, and in the process, the front end of the steel wire does not make contact with the arc-shaped pipe, so that the steel wire is prevented from being damaged. And the tip of the steel wire can be prevented from scratching the inner wall of the pipeline to cause abrasion, so that the service life of the steel wire guider is prolonged.

The utility model discloses a steel plate concrete shear wall body tie bar dual-purpose opposite-pull screw device which comprises a steel plate, a first sleeve is arranged in the steel plate in advance, the two ends of the first sleeve are respectively connected with a wall body tie bar, each wall body tie bar is provided with an end plate and a positioning jacking nut, and the positioning jacking nuts are arranged on the end plates. A second sleeve is arranged at the end, away from the steel plate, of each wall tie bar, and the wall tie bars are detachably connected with formwork fixing screws through the second sleeves. The steel plate concrete shear wall body tie bar dual-purpose opposite-pull screw device has the advantages of being convenient to assemble and disassemble, and avoiding on-site perforation arrangement of opposite-pull screws.

The utility model discloses an ablation catheter and an ablation system, and the ablation catheter comprises a catheter body which comprises a head end and a bending section connected with the head end; the ultrasonic transducer is arranged in the head end in the radial direction of the catheter body, so that the ultrasonic transducer can obtain an ultrasonic sector diagram in the forward direction of the head end; the ablation head electrode is arranged on the outer surface of the head end and used for conducting ablation on the target position, and the part, corresponding to the ultrasonic sector diagram, of the ablation head electrode is configured to enable ultrasonic waves to pass through; and the positioning electrode is arranged on the peripheral surface of the bent section and is used for positioning the target position. The ultrasonic transducer is integrated in the ablation catheter, so that the ultrasonic transducer can obtain the ultrasonic sector diagram with the forward head end, and when the ablation catheter is placed in a human body, ablation can be guided in a close range, ablation complications can be monitored, the ablation depth can be observed, and the ablation effect can be judged under the guidance of the ultrasonic sector diagram. And a doctor can be guided to select proper ablation energy, ablation time, ablation power and the like.

The utility model discloses an outdoor water pipe heat preservation system which comprises a main heat preservation pipe used for wrapping a water pipe and a plurality of home-entry branch heat preservation pipes connected to the main heat preservation pipe, and when the water pipe in the main heat preservation pipe or the home-entry branch heat preservation pipes needs to penetrate through a wall to enter a home, the water pipe is tightly matched with the main heat preservation pipe or the home-entry branch heat preservation pipes. A pipe fitting in-wall heat preservation structure for the water pipe to penetrate through is further embedded in the wall where the water pipe penetrates through. The pipe fitting in-wall heat preservation structure comprises an outer cylinder and an inner heat preservation cylinder, the outer cylinder is used for being embedded into an opening in a wall, the inner heat preservation cylinder is inserted into the outer cylinder, the outer diameter of the inner heat preservation cylinder can be matched with the inner diameter of the outer cylinder, and a through hole allowing a water pipe to pass through is formed in the inner heat preservation cylinder. According to the outdoor water pipe heat preservation system, the pipe fitting in-wall heat preservation structure is arranged at the position where the water pipe penetrates through the wall, a heat preservation dead zone of an existing outdoor water pipe heat preservation system is directly eliminated, the problem that the water pipe at the home-entry position is prone to pipe explosion in cold weather in the past is solved, and the use safety of the water pipe is greatly improved.

The application relates to the technical field of organic polymers, in particular to a preparation method of a novel porous organic polymer and application of the novel porous organic polymer in a water-based zinc ion battery, and comprises the following preparation steps: S1. 3,3-diamino-[1,1-biphenyl]-4,4-diol and p-toluenesulfonic acid are mixed in a mortar, deionized water is added, and mixing is uniformly carried out; S2. 1.57-1.6 parts of 2,4,6-triformylphloroglucinol is added, and grinding is continuously carried out to obtain a white gray powder; S3. the white gray powder is washed after being heated in a closed condition, and the novel porous organic polymer is obtained after drying. The zinc ion battery prepared by the novel porous organic polymer has high specific capacity and cycle retention rate, the battery internal resistance is reduced, the polarization phenomenon is weakened, and the ion conductivity is improved. Meanwhile, the raw materials used in the application have a wide source and low price, the preparation process does not need toxic solvents, conforms to the green chemical concept, and has a good industrialization prospect.

The present invention relates to a method for excavating dental material, the method comprising the steps of: placing a structural acoustic sensor (S101) on a tooth; excavating the dental material by means of a fluid jet (S102); detecting a structural acoustic signal during excavation by means of the structural acoustic sensor (S103); and adjusting or controlling a fluid jet generating device based on the structural acoustic signal (S104).

The utility model discloses a biliopancreatic system narrow cavity internal biopsy suit, which comprises a bougie fed into a pancreatic duct, the bougie comprises a hose, a hole channel is arranged in the hose, the inner diameter of the hole channel is 3mm, a guide wire or biopsy forceps with the outer diameter smaller than or equal to 2mm can pass through the hole channel, and two jaws of the biopsy forceps can be exposed after passing through an outlet of the bougie. The control ends of the two jaws are located at the inlet end of the bougie. The bougie with the guide wire is adopted to enter a narrow area of a biliopancreatic system together, then the bougie is left, and the guide wire is withdrawn from the bougie; the biopsy forceps pass through a narrow area of a biliopancreatic system along a hole channel of the bougie, perforation caused by incorrect entering directions of the biopsy forceps is avoided, jaws of the biopsy forceps are exposed after passing through an outlet of the bougie, the two jaws are controlled by a control end of an inlet end of the bougie to clamp a large pathological tissue block, and then the two jaws and the bougie exit together, so that the biopsy forceps are prevented from penetrating through the biliopancreatic system. The operation difficulty of obtaining the pathological specimen is reduced, the positive rate of pathology is improved, and the cost of a patient is not increased.

The invention provides a hysteroscopy device and method based on artificial intelligence, and relates to the field of examination devices. According to the hysteroscopy device based on artificial intelligence, a hysteroscope body comprises a hysteroscope body, a light source and a camera system, the hysteroscope body is used for entering a uterine cavity, the light source provides illumination, the camera system captures images, an operating handle is used for controlling the direction and depth of the hysteroscope, and a biopsy channel is used for inserting biopsy forceps, a cell scraper and other tools. The uterine distension liquid container is used for storing uterine distension liquid, the uterine distension pump is used for controlling the injection speed and pressure of the uterine distension liquid, and the pressure sensor is used for monitoring the pressure in a uterine cavity to prevent excessive distension. By arranging the intelligent image diagnosis system, the accuracy and reliability of diagnosis are improved, by arranging the uterus expansion system, a good visual field is provided for the hysteroscope, and by arranging the hysteroscope system, visual vision is provided.