10 results about "Adhesion prevention" patented technology

The application discloses a material for preventing tissue adhesion and hemostasis and a preparation method thereof, and relates to the technical field of medical biomaterials.The carboxymethyl cellulose, chitosan and vancomycin / ceftazidime are synergistically matched, so that the three functions of hemostasis, adhesion prevention and antibiosis are integrated;meanwhile, the water absorption and gelation of the carboxymethyl cellulose and the blood coagulation activation of the chitosan can jointly strengthen the hemostasis effect; the tissue barrier function of the chitosan and the gel isolation of the carboxymethyl cellulose can jointly improve the adhesion prevention performance; the broad-spectrum antibiosis of the vancomycin and the ceftazidime can respond to the infection risk in different surgical scenes; the material preparation process is simple, the dosage form can be adjusted according to different surgical scenes, the material has good biocompatibility and can be completely degraded, the problem that the existing medical materials have single function and are difficult to meet the needs of complex surgical wounds is solved, and the material has significant clinical application value.

The invention discloses a preparation method of anti-adhesion particles. The invention belongs to the technical field of biomedical materials. The raw materials used in the invention are all biocompatible materials, and inflammatory reaction and toxic residue are avoided through a natural cross-linking agent and non-toxic solvent system; through the synergistic effect and cross-linking treatment of the carboxymethyl cellulose, the chitosan and the polylactic acid, the particles can maintain the anti-adhesion effect for 7-14 days in vivo, and the key adhesion prevention period after soft tissue and urinary surgery is covered; the particles have flexibility, antibacterial property and urine corrosion resistance, can be used for preventing adhesion of soft tissue postoperative wounds, and can also be used for preventing adhesion of urinary surgical operation sites and modifying instrument surfaces; the low-temperature spray drying and gamma-ray sterilization process ensures the activity of the raw materials and the sterility of the product, the process parameters are easy to control, the method is suitable for industrial production, and the production cost is reduced compared with the existing like products.

The present invention relates to the technical field of freezing and adhesion prevention of rollers. Disclosed is a device for preventing freezing and adhesion of rollers in alpine regions, which aims to solve the problem that rollers are prone to freezing and adhesion when conveyor belts are used in alpine regions. The present invention comprises a conveying device, the conveying device comprising two transmission rollers for driving a belt to rotate; a circulation channel is provided inside each transmission roller, and two ends of the two circulation channels are respectively communicated by means of circulation pipes; the circulation pipes and the circulation channels are filled with a hot medium; the circulation pipes are rotatably connected to the transmission rollers, and the circulation pipes are fixedly connected to the conveying device.

This utility model discloses a feeding device for adhesive products, relating to the field of adhesive product processing technology. It includes a processing box, a feeding chamber, and a mixing chamber. The processing box is equipped with a heating and stirring assembly. A locking rod fixes an arc-shaped limiting plate to one side of a fixed plate, supporting the horizontal pipe. A spray nozzle sprays water onto the adhesive material to be stirred in the mixing chamber, preventing adhesion during stirring and effectively cooling the material. A heating pad contacts the material in the feeding chamber to heat it. A stirring roller mixes the water-heated adhesive product. A fixing block fixes the arc-shaped heating ring to the limiting sleeve and limiting flange, reinforcing and limiting the two arc-shaped heating rings. The arc-shaped heating ring and the heat-conducting rod heat the material adhering to the inner side of the mixing chamber, facilitating its removal with the help of water, thus preventing the adhesive product from adhering to the mixing chamber during feeding.

Provided is an adhesion prevention film that sufficiently swells upon contact with moisture and is less prone to breaking. This adhesion prevention film contains a bioabsorbable polymer compound. The adhesion prevention film has a thickness of 10-500 µm, and a swelling ratio of 200-500 vol% after 15-minute immersion in phosphate buffer at pH 6.0. In the case where 1H-NMR measurement of the film is performed, using a sample solution prepared by adding the film and 1.2 mg of pyrazine to 1.1 mL of deuterated trifluoroacetic acid, with the resonance peak of pyrazine as a standard substance referenced to 9.45 ppm, when the integral value of the maximum resonance peak measured in the range of 9.4-9.5 ppm is defined as A and the integral value of the maximum resonance peak measured in the range of 5.0-5.2 ppm is defined as B, B / A is 0.10 or less.

The application belongs to the technical field of super-hydrophilic coating, and particularly relates to a self-repairable super-hydrophilic coating, a preparation method and application thereof.The self-repairable super-hydrophilic coating comprises the following components in parts by weight: 10-20 parts of epoxy resin, 1-5 parts of curing agent, 10-150 parts of solvent, 0-7 parts of nano filler, 5-15 parts of modifier and a hydrophilic component dissolved in another solvent.The super-hydrophilic coating has excellent oil pollution prevention characteristics, and can have antibacterial, scale inhibition and drag reduction characteristics, and can be applied to the fields of oil adhesion prevention, microbial adhesion prevention, underwater drag reduction, oil-water separation and the like, can effectively resist conventional organic oil phase pollution, even high-viscosity crude oil pollution, and can be repaired in water, strong acid, strong base, high salt and artificial seawater, solving the problem that the existing super-hydrophilic coating cannot be repaired in an extreme underwater environment.

A biocompatible membrane comprised of alginate and hyaluronate. The membrane may be used to prevent unwanted scarring after surgery. The tissue adherence and the rate of bioresorption of the membrane may be modified through an external stimulus comprising a sequestering agent and a viscosity modifier.

The present application relates to the technical field of conveying and scraping device, and particularly relates to a scraping device for conveying emulsion explosive, which comprises a visual identification unit, a central control unit and a cleaning execution unit arranged below a conveying belt. The visual identification unit collects the image of the lower surface of the conveying belt and analyzes the image, and classifies the adhesion state in each of the at least two regions divided in the width direction of the conveying belt. The central control unit receives the classification results and predicts the time when the identified region reaches the cleaning execution unit, and generates a control instruction. The cleaning execution unit comprises a cold air knife corresponding to each region and a pre-scraping strip, the pre-scraping strip is provided with a first airflow channel communicated with the cold air knife, and the first airflow channel is communicated with the knife edge through a first air outlet. The present application realizes intelligent classification control through visual identification, the air cushion at the knife edge of the pre-scraping strip can effectively prevent the adhesion of the adhering objects, improve the cleaning efficiency and reduce the abrasion, and the independent control of each region avoids the waste of energy consumption.

The present invention addresses the problem of providing a solid cosmetic for lips in which transfer resistance (secondary adhesion prevention effect) is further improved. The present invention pertains to a solid cosmetic for lips, characterized by containing: (A) a color material surface-treated with a treatment agent containing an amino acid or a metal soap; (B) 15-50 mass % of at least one substance selected from (b1) copolymers containing a dimer acid ester, and (b2) dimer acid esters; (C) 20-70 mass % of (c1) a non-volatile hydrocarbon oil that separates when mixed with (B) at 25° C. or (c2) a phenyl-modified silicone that separates when mixed with (B) at 25° C.; and (D) wax.