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4908 results about "Sodium hyaluronate" patented technology

Sodium hyaluronate is the sodium salt of hyaluronic acid, a glycosaminoglycan found in various connective tissue of humans.

Process for preparing cross-linked sodium hyaluronate microspheres capable of being adopted as emboliaztion agent by adopting sodium hyaluronate as raw material

The present invention provides a process for preparing cross-linked sodium hyaluronate microspheres capable of being adopted as an emboliaztion agent by adopting sodium hyaluronate as a raw material. The process comprises the following steps: preparing a sodium hyaluronate alkaline solution gel with a concentration of 10-30% g/ml; adding the sodium hyaluronate alkaline solution gel to an emulsifier-containing oil phase, and carrying out high speed emulsification through a shearing machine, wherein an emulsification speed is 500-2000 rpm, and a time is 10-20 min; adding a certain amount of a cross-linking agent, stirring for 4-6 h at a room temperature, carrying out a cross-linking reaction, and standing overnight after completing the reaction, wherein a mass percentage of the cross-linking agent in the oil phase is 0.2-2%; and adopting a water-soluble organic solvent to wash to remove the oil phase remained on the surface of the microspheres, and finally drying to obtain the cross-linked sodium hyaluronate microspheres. According to the present invention, the preparation process is simple; and the size of the obtained microspheres is suitable for routine blood vessel emboliaztion, and the obtained microspheres have characteristics of controllable particle size, good microsphere shape, easy screening, elasticity, expandibility, no toxic-side effect on human body, good biocompatibility, good biodegradability, and ensured clinical safety.
Owner:HANGZHOU SINGCLEAN MEDICAL PROD

Dressing composition used for inhibiting scars and accelerating wound healing and application thereof

The invention discloses a dressing composition used for inhibiting scars and accelerating wound healing and application thereof. The dressing composition consists of chitosan, acidic polysaccharide and panax notoginseng saponins in a weight proportion of 100:10-50:10-100, wherein the chitosan is selected from chitosan, chitosan lactate, acetate and hydrochloride; the acidic polysaccharide is selected from sodium carboxymethyl chitosan, sodium hyaluronate, zinc hyaluronate, sodium alginate and sodium carboxymethyl cellulose; and the panax notoginseng saponins accounts for no less than 40.0 percent of the total weight of ginsenosides Rg1 and Rb1. The formulations of the dressing composition are xerogel powder, capsules, gel membranes, hydrogels and fiber coatings. The dressing composition is used for wounds, burns, scalds, crush injuries, skin ulcers, gastroenteric ulcers and no healing of the wounds, has the advantages of rapid hemostasis, exudate reduction, moisturizing, air permeability, bacteriostasis, inflammation diminishing, itch relieving, no adhesion, effective inhibition of scarring, remarkable reduction of wound healing time and no need of replacing dressings, so that thedressing composition basically meets requirements of perfect functional external dressings.
Owner:DALIAN UNIV OF TECH

Efficient moisture-retention sodium hyaluronic acid raw-liquor

The invention discloses a high-effective moisture-keeping sodium hyaluronate stock solution comprising a sodium hyaluronate, characterized in that the solution is composed of high molecular weight sodium hyaluronate with average molecular weight more than 2. 6 million Dalton and low molecular weight sodium hyaluronate with average molecular weight lower than 10 thousand Dalton which are mixed by proportion, wherein, the high molecular weight sodium hyaluronate with average molecular weight more than 2. 6 million Dalton is of 0. 1 to 0. 5 parts by weight, the low molecular weight sodium hyaluronate with average molecular weight lower than 10 thousand Dalton is of 0. 5 to 1. 0 parts by weight, the rest is 100 parts of distilled water, the distilled water. especially can be chose for double distilled waters. The high-effective moisture-keeping sodium hyaluronate stock solution provided by the invention can effectively permeate into a corium layer to promote blood microcirculation, be beneficial to nutrient substance absorption of the skin, with beautification anti-wrinkle health care action; the high-effective moisture-keeping sodium hyaluronate stock solution provided by the invention has strong flexibility and wetting property, can be coated on the skin surface to form a layer of moisture-keeping ventilated membrane for keeping the skin nourishing, moistening and glossy.
Owner:TONGXIANG HENGJI BIOTECH
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