11results about How to "Reduce damage area" patented technology

The invention relates to the technical field of glass processing, and discloses a processing method of AG (anti-glare) glass, which is high in processing precision and efficiency, low in product breakage rate and processing cost and low in skill requirements on operators, and comprises the following steps: S1, carrying out sand blasting on a glass incoming material, so that a sand surface is formed on the front surface of the glass, and a non-sand surface is formed on the back surface of the glass; s2, cutting the sand-blasted glass to form a plurality of glass sheets; s3, a laser beam is emitted from the non-sand surface of the glass sheet, so that a chamfering pretreatment area, a hole pretreatment area and a hole chamfering pretreatment area are formed in the glass sheet through laser internal carving; s4, putting the glass sheet into an etching solution for chemical etching; s5, carrying out appearance splitting on the glass sheet so as to form a chamfer on the edge of the glass sheet; and S6, carrying out hole splitting on the glass sheet by adopting ultrasonic wave under-liquid splitting, so that hole sites are formed in the hole pretreatment area and the hole chamfering pretreatment area on the glass sheet.

The present invention relates to the technical field of medical devices, and proposes a proximal femoral fixation steel plate, comprising a steel plate body and a first screw, wherein the first screw comprises a nail tube, a rotating cylinder and a drill rod, wherein the nail tube penetrates and is slidably arranged in the steel plate body, and the peripheral side of the nail tube is provided with an annular groove and a first through hole that are interconnected; the rotating cylinder is rotatably arranged in the annular groove, and the peripheral side thereof is provided with an interconnected reinforcement groove and a second through hole; the drill rod is fixedly arranged on the rotating cylinder, and its length direction is parallel to the axial direction of the nail tube, and the side away from the axis of the nail tube is spaced from the peripheral side of the rotating cylinder. The present invention arranges a rotating cylinder and a drill rod on the nail tube, and when the nail tube is screwed into the femur, the drill rod can be driven to move along the axial direction of the nail tube, so as to open a line groove for storing bone cement on the inner wall of the femoral borehole, which not only improves the degree of fixation of the first screw and the femur, but also reduces the damage area of ​​the femur to the drill rod.

The invention discloses a high-toughness carbon-glass super-hybrid composite material as well as a preparation method and application thereof. Carbon fiber broadened filaments and glass fiber broadened filaments prepared by ultrathin carbon fiber spreading equipment are subjected to super-hybrid doubling, and the carbon-glass super-hybrid composite material with better reinforcing and toughening effects is prepared through a vacuum-assisted resin transfer molding process. An existing mixing method is improved, the problems that an interlayer mixing method is poor in mixing designability, low in fiber mixing degree, poor in toughening effect and the like are solved, the prepared carbon-glass super-mixed composite material has better reinforcing and toughening effects, and under the same carbon-glass volume ratio, the carbon-glass super-mixed composite material has the better reinforcing and toughening effects. The carbon-glass super-hybrid composite material is higher in tensile modulus, elongation at break and loss factor, and a drop hammer impact test shows that the carbon-glass super-hybrid composite material has the characteristics of larger energy absorption, small damage area and the like. In conclusion, the carbon-glass super-hybrid composite material shows better reinforcing and toughening effects, the mechanical property of the composite material is improved, and the carbon-glass super-hybrid composite material is better than an interlayer hybrid composite material on the whole.

The utility model relates to charging pile technical field, concretely relates to a floor type direct current charging pile, including charging pile body, the bottom surface fixedly connected with installation bottom plate of charging pile body, the upper side of charging pile body is fixedly connected with the electric gun suspension shell both sides, two electric gun suspension shell's apart one side all is provided with charging gun, the lower end fixedly connected with wire body of charging gun, the both sides below of charging pile body all are provided with the wire cleaning assembly, the front side middle part of charging pile body all is installed with three plug -in board, the inside below of charging pile body is provided with the empty groove. In the utility model, through being equipped with winding assembly in charging pile body, can place wire body in the inside of charging pile body by winding, can better avoid the wire body of plug -in board and charging gun one long -term exposure outside, reduce the damaged area, through being equipped with wire cleaning assembly, clean the surface of long -term frequent use wire, thereby better improve the service life of wire body.

The invention discloses a pig stomach decellularized extracellular matrix hydrogel for protecting and repairing gastric mucosa and a preparation method thereof, the pig stomach decellularized extracellular matrix hydrogel is prepared by taking pig stomach tissue as a raw material, performing degreasing, decellularization and DNA removal on the pig stomach tissue to prepare a pig stomach decellularized extracellular matrix, and further performing digestion treatment by utilizing simulated gastric juice to prepare the pig stomach decellularized extracellular matrix hydrogel. The obtained pig stomach decellularized extracellular matrix hydrogel not only can form a physical barrier to protect the damaged part of the gastric mucosa, but also can play an anti-inflammatory role and promote the regeneration of the gastric mucosa, so that the protection and repair of the damaged part of the gastric mucosa can be realized at the same time.

The utility model relates to a joint-free clamping structure for a cross beam and a pull rod of a table leg, which is characterized in that a composite hole is formed in the cross beam, so that the pull rod is easy to observe during installation, and the assembly efficiency is greatly improved; the clamping tooth structure and the clamping tooth groove structure which are matched with each other are arranged on the cross beam and the pull rod respectively, so that the pull rod can be stably clamped on the cross beam and has good bearing performance; the end portion of the pull rod is of an up-and-down flush structure, and the tripping phenomenon between the pull rod and the cross beam is effectively prevented.

This utility model discloses a device for rapid kanamycin inoculation of cotton plants, comprising a handle, a telescopic tube, and an inoculation head arranged sequentially from left to right. The left end of the handle is a bacterial solution storage chamber, and the right end is an equipment chamber. The equipment chamber contains a telescopic tube reel. One end of the telescopic tube reel passes through the telescopic tube and is connected to the inoculation head. The other end of the telescopic tube reel is connected to the bacterial solution storage chamber via a valve and a diaphragm pump. This invention relates to the field of cotton breeding technology. It allows for precise inoculation using the injection head on the inoculation head, resulting in a small amount of bacterial solution used and minimal leaf damage. The length of the telescopic tube can be adjusted according to the height of the cotton plant, facilitating operation and improving work efficiency. The amount of bacterial solution used can be adjusted via a button, resulting in a high inoculation success rate and good screening effect for transgenic cotton plants.

This invention relates to a nanovesicle, its preparation method, and its application, belonging to the field of biomedical technology. The nanovesicles are surface-modified with RVG peptides and internally encapsulate a miRNA-130a-3p mimic. The nanovesicles are derived from human placental mesenchymal stem cells. The preparation method includes: expressing RVG peptides in human placental mesenchymal stem cells using genetic engineering; obtaining RVG peptide-modified nanovesicles using an extrusion method; and loading the miRNA-130a-3p mimic into the RVG peptide-modified nanovesicles to obtain the nanovesicle product. The surface-expressed RVG peptides can improve brain targeting, thereby increasing the content of miRNAs in hypoxic-injured nerve cells and reducing the level of target genes, thus reducing the apoptosis rate, increasing cell activity, and inhibiting the release of inflammatory factors. This inhibits brain cell apoptosis in cerebral ischemia-reperfusion injury, reduces brain damage area, and promotes the recovery of neurological function.

The invention provides a method for screening umbilical cord mesenchymal stem cells capable of effectively treating myocardial infarction by using an N-cadhein < + > / CD168 <-> umbilical cord mesenchymal stem cell subset. The method comprises the following steps: obtaining umbilical cord mesenchymal stem cells; the umbilical cord mesenchymal stem cells are incubated with an N-cadhein-PE antibody and a CD168-FITC antibody, and the incubated umbilical cord mesenchymal stem cells are obtained; and detecting the ratio of the N-cadhein + / CD168-umbilical cord mesenchymal stem cell subpopulation in the incubated umbilical cord mesenchymal stem cells, and predicting the effectiveness of the umbilical cord mesenchymal stem cells in the treatment of myocardial infarction according to the ratio: when the ratio is greater than 25%, predicting that the umbilical cord mesenchymal stem cells have the effect of effectively treating myocardial infarction. By adopting the method provided by the invention, the umbilical cord mesenchymal stem cells meeting the standard of effectively treating myocardial infarction can be obtained, and the method has important medical value and economic value.

This invention belongs to the field of medical device technology, specifically relating to a pediatric foreign body removal device. The device includes an endoscope handle with a gastric tube fixed to one end. The gastric tube has a biopsy channel inside. It also includes a clamping module movably mounted inside the biopsy channel. The clamping module includes a sheath, a first clamp, and a second clamp. The sheath is slidably connected inside the biopsy channel, and both the first and second clamps are rotatably connected to one end inside the sheath. The first and second clamps constitute a clamping structure. This invention, by setting the clamping module and bending module to be compatible and switchable between linked and independent states, first clamps bends bendable card-like foreign bodies on both sides using a first and second bending rod to reduce their projected width. This allows the foreign body to fit into the narrow digestive tract of children, reducing the risk of complications such as mucosal damage and bleeding.

The utility model discloses a safety seat of a truck, which comprises a seat assembly, a safety mechanism, a seat headrest, an air bag backrest and a safety belt latch hook, the safety mechanism is mounted at the bottom of the seat assembly, the air bag backrest is mounted at the top of the seat assembly, and the safety belt latch hook is mounted on the side surface of the seat assembly; the safety mechanism comprises a group of moving guide rails and a seat control device, the group of moving guide rails are transversely distributed at equal intervals, and the seat control device is mounted on the group of moving guide rails; the seat control device comprises a rotating disc, a connecting and fixing disc, a high-speed motor and a bracket plate, the rotating disc is mounted at the top of the connecting and fixing disc, the connecting and fixing disc and the high-speed motor are both mounted at the top of the bracket plate, and two groups of fixing and locking pins which are symmetrically distributed are mounted at the bottom of the bracket plate. According to the device, the safety of the automobile seat can be improved, so that a user is protected.