10results about How to "Avoid piercing" patented technology

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.

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 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 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 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).