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150 results about "Lidocaine Hydrochloride" patented technology

The hydrochloride salt from of lidocaine, an aminoethylamide and a prototypical member of the amide class anesthetics. Lidocaine interacts with voltage-gated Na+ channels in the nerve cell membrane and blocks the transient increase in permeability of excitable membranes to Na+. This prevents the generation and conduction of nerve impulses and produces a reversible loss of sensation. Lidocaine hydrochloride also exhibits class IB antiarrhythmic effects. The agent decreases the flow of sodium ions into myocardial tissue, especially on the Purkinje network, during phase 0 of the action potential, thereby decreasing depolarization, automaticity and excitability.

Method for preparing lidocaine hydrochloride

The invention provides a method for preparing lidocaine hydrochloride, and belongs to the technical field of anesthetic synthesis. The method comprises the following steps: by taking 2,6-xylenol as a raw material, Pd/C as a main catalyst and 2,6-dimethylcyclohexanone as a promoter, performing liquid phase amination with ammonia water at high temperature, thereby obtaining a midbody 2,6-dimethylaniline; enabling sodium methylate, 2,6-dimethylaniline and N,N-lignocaine methyl acetate as raw materials to react at 90-95 DEGC, distilling while reaction is performed to remove methanol till no methanol can be evaporated out, continuously reacting for 30 minutes, cooling to the room temperature, adding dichloroethane, washing with water, and leaving to stand to layer, thereby obtaining an organic layer, namely, a lidocaine based dichloroethane solution; further adding hydrochloric acid into the lidocaine based dichloroethane solution, adjusting the pH value to be 3.5-4 by using hydrogen chloride, adding activated carbon to reflux for 20-40 minutes, filtering, concentrating the filtrate, cooling, crystallizing, and dying, thereby obtaining lidocaine hydrochloride. The lidocaine hydrochloride prepared by using the method is simple in synthesis process and high in product purity, that is, the purity can be greater than 99%, and the total yield is greater than 84%.
Owner:ZHEJIANG ESIGMA BIOTECH CO LTD

Gargle for relieving pain for oral inflammation disease

The invention belongs to the technical field of medicine, in particular to a drug composition of gargle which contains sodium dichlorophenolate and can relieve pain and be anti-inflammatory for the oral inflammation disease; wherein the drug composition comprises the following components by percentage: 0.10 to 30 percent of sodium dichlorophenolate hydroxypropyl-Beta-cyclodextrin inclusion (equal to 0.065 to 0.20 percent of concentration of sodium dichlorophenolate), 0.01 to 0.10 percent of lidocaine hydrochloride, 0.10 to 5.0 percent of borax, 0.1 to 2.0 percent of boric acid, 0.1 to 10 percent of glycerin, 0.10 to 5.0 percent of sodium bicarbonate, 0.001 to 0.10 percent of vitamin B12, 0.02 to 1.0 percent of tromethamine, 0.01 to 5.0 percent of sucralose, 0.10 to 5.0 percent of peppermint essence and 0.01 to 1.0 percent of sodium benzoate; a proper amount of pharmaceutical caramel color and water for injection is added till to reach the needed weight/volume concentration. All the above components are weighted by weight/volume percentage; the aqueous solution of the composition has the pH value of 6.5 to 9.0. The composition has little thrill to oral mucosa, stable storage for long time and good biological tolerance and has fast and long-lasting curative effect for relieving pain and being anti-inflammatory to the oral inflammation disease.
Owner:官培龙 +1

A hemostatic, anti-inflammatory and analgesic composite effect nanoemulsion that can be used for minimally invasive cosmetic therapy and its preparation method

The invention relates to bleeding-stopping, inflammation-diminishing and pain-relieving nano emulsion for use in minimally invasive beauty treatment therapy and a preparation method thereof. The nano emulsion is prepared from the following raw materials in part by weight: 0.0055 part of thrombase freeze-dried powder, 0.0005 part of epinephrine, 5 parts of calcium chloride, 1 part of sodium chloride, 6 parts of coix seed essence oil, 6 parts of as arum volatile oil, 5 parts of lidocaine hydrochloride, 13.6 parts of isopropyl myristate, 27.6 parts of octoic acid and capric acid polyethylene glycol glyceride, 9.2 parts of polyglycerol-3-dioleate and 26.594 parts of distilled water. The nano emulsion has diversified functions and has bleeding-stopping, inflammation-diminishing and pain-relieving effects, so the complex process of the minimally invasive beauty treatment therapy is simplified. In addition, a nano transdermal technique is adopted to promote the functional components to enterskin effectively, constantly and controllably to produce the bleeding-stopping, inflammation-diminishing and pain-relieving effects; and the toxic and side effects of the nano emulsion can be reducedgreatly.
Owner:董萍 +1

Lidocaine hydrochloride polymeric liposome for topical anesthesia and preparation method

The invention relates to lidocaine hydrochloride polymeric liposome for topical anesthesia and a preparation method. The preparation method comprises the following steps: dissolving OQLCS (octadecyl-quaternized lysine modified chitosan) and cholesterol in dichloromethane to form an oil phase; completely dissolving lidocaine hydrochloride in deionized water to form a water phase; performing ultrasonic treatment to the oil phase in a power range of between 150 and 200W, adding the water phase, and performing ultrasonic dispersion by using a probe type ultrasonic generator until a semitransparent emulsion is formed to form a dispersion emulsion with uniform water and oil; and performing rotary evaporation to the emulsion on a rotary evaporator at 40 DEG C at a rotating speed of 50r/min, and introducing nitrogen flow into the rotary evaporator for protecting, and filtering through a sterile filter membrane of between 0.2 and 0.4mu m after organic solvent is completely volatilized to obtain the lidocaine hydrochloride polymeric liposome. The encapsulation rate of the liposome to a medicament is between 60 and 85 percent; the grain diameter of the polymeric liposome is between 60 and 180nm, and the surface is positively charged with an electric potential of between 6 and 65mv. The lidocaine hydrochloride polymeric liposome can be directly applied to the surface of skin mucous membrane, or is further prepared to form gel or ointment.
Owner:STOMATOLOGICAL HOSPITAL TIANJIN MEDICAL UNIV

Bleeding-stopping, inflammation-diminishing and pain-relieving nano emulsion for use in minimally invasive beauty treatment therapy and preparation method thereof

The invention relates to bleeding-stopping, inflammation-diminishing and pain-relieving nano emulsion for use in minimally invasive beauty treatment therapy and a preparation method thereof. The nano emulsion is prepared from the following raw materials in part by weight: 0.0055 part of thrombase freeze-dried powder, 0.0005 part of epinephrine, 5 parts of calcium chloride, 1 part of sodium chloride, 6 parts of coix seed essence oil, 6 parts of as arum volatile oil, 5 parts of lidocaine hydrochloride, 13.6 parts of isopropyl myristate, 27.6 parts of octoic acid and capric acid polyethylene glycol glyceride, 9.2 parts of polyglycerol-3-dioleate and 26.594 parts of distilled water. The nano emulsion has diversified functions and has bleeding-stopping, inflammation-diminishing and pain-relieving effects, so the complex process of the minimally invasive beauty treatment therapy is simplified. In addition, a nano transdermal technique is adopted to promote the functional components to enterskin effectively, constantly and controllably to produce the bleeding-stopping, inflammation-diminishing and pain-relieving effects; and the toxic and side effects of the nano emulsion can be reducedgreatly.
Owner:董萍 +1

Lidocaine hydrochloride injection and preparation method thereof

The invention provides lidocaine hydrochloride injection. Each 1000ml of the lidocaine hydrochloride injection is prepared from the following components by weight: 20g of lidocaine hydrochloride (the theoretical weight, and the quantity of lidocaine hydrochloride needs to be determined according to the content as well as the water drying and the purifying condition), and 4.4-5.3 g of sodium chloride. According to the improved lidocaine hydrochloride injection and the preparation method of the lidocaine hydrochloride injection, the prescription composition is simple, and a few kinds of auxiliary materials is adopted, thus the clinical risks caused by lack of iso-osmia of a product are eradicated, and the various index including the pH of the product and related substances are stable and controllable, and meet the requirements in the exposure draft of the lidocaine hydrochloride injection in the China pharmacopeia 2015; the lidocaine hydrochloride injection is suitable for clinical application, and the product is safe and effective. A preparation method is simple, new cost is not increased, and the lidocaine hydrochloride injection is suitable for large-scale industrial production and has a large application value.
Owner:SHANGHAI ZHAOHUI PHARMA
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