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325results about How to "Reduce allergic reactions" patented technology

Adsorption resin method separation technology of scutellarin in fleabane flower extract

InactiveCN101580527ATo achieve the purpose of removing other impuritiesHigh purityIon-exchange process apparatusSugar derivativesPurification methodsSeparation technology
The invention discloses an adsorption resin method separation technology of scutellarin in a fleabane flower extract. Based on scutellarin and fleabane flower essence A which have very similar structures, the difference of intermolecular hydrogen bonding capacities is formed, an amide functional group capable of forming hydrogen bonds is introduced on a macroporous adsorption resin skeleton, highly selective adsorption is carried out on the scutellarin by the synergic action of dewatering and the hydrogen bonds, a commercially available extract is used as a raw material, and a specimen with the content of the scutellarin more than 98% and the content of the fleabane flower essence A less than 0.5% is prepared by a one-step continuous technology of adsorption and desorption. The invention avoids using a poisonous organic solvent with low boiling point and does not need the assistance of other purification methods, so that the invention has simple operation and is environment-friendly, resin can be recycled simultaneously, the production cost is greatly reduced, and the invention is suitable for large-scale industrial production. The obtained specimen can meet the requirements for further enhancing the quality standard of a breviscapine preparation, reducing clinical side reactions and the like, and the invention has favorable application prospect.
Owner:NANKAI UNIV

Protecting and fixing device for wound

The invention discloses a protecting and fixing device for wound, comprising at least one protecting and fixing layer with openings, wherein the protecting and fixing layer with openings is longitudinally provided with an opening for communicating the upper end face and the lower end face; the opening can enclose the wound therein so as to make the protecting and fixing layer with openings limit the wound tension and increase the mobile corrugation of the wounded skin. The invention can protect and fix the operation wound, the trauma wound or the catheter infusion wound into an opening which can limit the tension increase of the wound and the mobile corrugation of the surface skin of the wound and can prevent the wound from being torn and cracked and also avoid the damage for the wound due to the mobile corrugation and the surgical dressing of the wounded skin as well as the relative displacement frictions of the infusion catheter. Therefore, the invention fills the blank of current technology, which can enable the covered dressings to penetratively contact the secretion so as to absorb the exudate of the wound. Besides, the invention can prevent the foreign material contact anaphylaxis due to the wound contacting by compressing the dressing and the direct bonding of the catheter infusion wound and can prevent the re-injury of the wound caused by the synechia between the dressing and the wound secretion.
Owner:唐二虎 +2

Melittin complex nanometer granule for oral dosing and preparation method thereof

The invention belongs to the technical field of medicines and discloses melittin complex nanoparticles for oral administration and a preparation method thereof. Water-soluble melittin and an amphiphilic substance are dissolved into a hydrosolvent A to form a hydrophobic protein ion pairing complex; the complex and a suitable polymer material are dissolved into a nonaqueous solvent B; an emulsion solvent diffusion method in a liquid phase is adopted to wrap the complex into the polymer material; and microparticles with the particle diameter between 10 and 1000nm are formed after the solvent is volatilized. The hydrosolvent A is distilled water, double distilled water, deionized water, physiological saline, or a phosphate buffer solution or an acetate buffer solution or a Tris buffer solution with the pH value of between 1 and 11; and the nonaqueous solvent B is a single or mixed solvent of alcohol, acetone, ethyl acetate, methylene dichloride, chloroform and dimethyl sulfoxide. The complex has high fat solubility, and the encapsulation rate of the nanoparticles is more than 90 percent. The preparation process is mild and can assure the biological activity of medicines. The preparation method is suitable to prepare oral administration preparations.
Owner:SHENYANG PHARMA UNIVERSITY

Omeprazole sodium freeze-dried powder injection and preparation method thereof

ActiveCN101703483AReduce the risk of adverse reactionsComply with the requirements of human intravenous injectionPowder deliveryOrganic active ingredientsOmeprazole SodiumFiltration
The invention discloses an omeprazole sodium freeze-dried powder injection and a preparation method thereof. The omeprazole sodium freeze-dried powder injection contains an active ingredient, namely, omeprazole sodium monohydrate, and auxiliary materials, namely, calcium disodium edetate and sodium hydroxide. The preparation method of the omeprazole sodium freeze-dried powder injection is characterized by comprising the following steps: weighing the calcium disodium edetate of prescription amount and dissolving the calcium disodium edetate in water for injection, stirring, dissolving, and regulating pH value to 10.0-12.0 by using 10% of sodium hydroxide solution; weighing omeprazole sodium of the prescription amount and adding the omeprazole sodium in the mixture, stirring at room temperature for dissolution, supplementing and adding the water for injection to full amount; adding active carbon, stirring at room temperature for decoloration and endotoxin removal, conducting rough filtration to remove carbon firstly, and then conducting refining filtration by using a filter membrane of 0.22 Mum; taking refining filtrate to test intermediate, conducting encapsulation after meeting requirements; and freeze-drying and unboxing, thus obtaining the omeprazole sodium freeze-dried powder injection. The freeze-drying technology of the omeprazole sodium freeze-dried powder injection takes temperature below minus 40 DEG C as pre-freezing temperature; after pre-freezing for at least two hours, sublimation is started, wherein the sublimation temperature is 5-12 DEG C, the sublimation time is over 14 hours; and then drying is conducted for over 2 hours at the temperature of 20-35 DEG C. Unboxing is carried out after a stopper is added and a cover is put in place, thus obtaining the finished product of the omeprazole sodium freeze-dried powder injection.
Owner:HAINAN LEVTEC PHARMA

Skin allergy relieving liquid and preparation method and application for skin allergy relieving liquid

The invention discloses skin allergy relieving liquid and a preparation method and application for the skin allergy relieving liquid, and belongs to the field of cosmetics. The skin allergy relieving liquid is made from six types of plant materials including total chrysanthemum indicum plants, wild hedera helix stems/leaves, witch hazel stems/leaves, chamomile flowers/leaves, golden camellia leaves and kalanchoe pinnata stems/leaves. The preparation method includes steps of cleaning, grinding, extraction by the aid of hot water, adsorption by the aid of kaolin, still standing, pressure filtration, ultra filtration and the like so as to obtain refined complex extract. The skin allergy relieving liquid, the preparation method and the application have the advantages that the skin allergy relieving liquid is a pure-plant preparation and is unique in formulation, synergistic effects can be realized by beneficial factors in the six types of plant materials, accordingly, immune functions of human bodies can be effectively regulated, the microvascular circulation of the skins of the human bodies can be improved, inflammation diminishing and itching relieving effects can be realized, the metabolism of the skins of the human bodies can be promoted, allergic sources can be inhibited and eliminated, and allergic reaction can be relieved; the skin allergy relieving liquid is simple in production process, high in operability and convenient to use, not only can be used as spray, but also can be used as emulsion to be directly applied to the skins of the human bodies.
Owner:广东颜芝堡生物科技有限公司
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