31results about How to "No teratogenicity" patented technology

The invention provides a duodenal internal covering membrane, which is made of degradable shape memory biocompatible material and relates to degradable medical equipment internally installed in a digestive tract. After the internal covering membrane is implanted into a duodenum, chyme can be split from bile and pancreatic juice, so stomach exudates are prevented from being directly digested, absorbed and metabolized in the duodenum, and the histocompatibility is good; after being implanted into a human body, the duodenal internal covering membrane is steady, is not easy to slide off to be incarcerated and can be gradually degraded in the human body after 2 months to 5 years, so complicated operation and the injury to organs and tissue, which are caused when the duodenal internal covering membrane is removed from the human body in the future, are avoided, a rebound effect achieved after the original barrier is instantaneously and thoroughly dismounted can be slowed down, and the duodenal internal covering membrane can be prepared into medical equipment which is used for curing obesity and diabetes mellitus and does not need to be removed from the human body in the future; and tube-shaped part sinking induced by gastrointestinal motility and jejunum content backflow caused by the decrease of a gap between a tube-shaped part of the internal covering membrane and the inner wall of the duodenum can be avoided. The prepared medical equipment for curing the obesity and the diabetes mellitus can achieve the effects of dropping prevention, removal exemption, rebound inhibition and injury reduction.

The invention discloses a non-catalytic double reducing agent NO X Removal method to achieve NO with ethanol and n-pentane as pre / post-spray reductants under oxygenated conditions X remove. The post-processing device used includes a plurality of spray modules with the same structure arranged along the fluid flow direction on the pipe body. A single module includes a heating plate and a temperature sensor arranged in the inner cavity of the pipe body and four nozzles arranged on the wall of the pipe body. The heating sheet is provided with an I-shaped through hole with a heating wire installed; the nozzles on the same side of the tube axis on the tube body wall are connected to the oxygen pump through the oxygen stabilizing rail, and on the other side of the tube body axis on the tube body wall The odd-numbered nozzles in the nozzles are all connected to the ethanol filter pump through the ethanol rail; the even-numbered four nozzles are connected to the n-pentane filter pump through the n-pentane rail; each sensor, filter pump and heating sheet Both are connected to the car electronic control unit. The multi-modular design of the present invention further improves the NO X removal rate.

The preparation process of taxinol-sodium alginate microballoon as vascular embolism agent includes the following steps: preparing taxinol solution, sodium alginate solution and cationic solution of barium chloride, calcium chloride, etc.; mixing the taxinol solution, sodium alginate solution and the cationic solution of barium chloride, calcium chloride, etc. to obtain sodium alginate microballoon containing taxinol as vascular embolism agent. The vascular embolism agent has carrier material of natural extractive and excellent biocompatibility, is biodegradable, has carried medicine with less side effect, and is suitable for tumor blood vessel embolism and chemotherapy.

The invention discloses a calcium phosphate bone cement degradable under regulation. The calcium phosphate bone cement is prepared from the following raw materials: a liquid-phase agent and a solid-phase powder. The liquid-phase agent is a common calcium phosphate bone cement liquid-phase agent or a mixed liquid of a two-dimensional black phosphorus nano-material dispersion liquid and the common calcium phosphate bone cement liquid-phase agent, wherein the two-dimensional black phosphorus nano-material dispersion liquid is a mixed liquid of a two-dimensional black phosphorus nano-material anddeionized water. The solid-phase powder is a mixture of a temperature-sensitive oxygen-produced compound and a calcium phosphate bone cement solid-phase powder, wherein the temperature-sensitive oxygen-produced compound is a sodium percarbonate-wax microsphere composite suface-coated with a gelatin layer, and the sodium percarbonate-wax microsphere composite is a sodium percarbonate microsphere composite coated with a wax layer. The invention also discloses a preparation method for the above-mentioned calcium phosphate bone cement degradable under regulation. The calcium phosphate bone cementprepared in the invention can be accelerated in degradation rate through both heat treatment and near-infrared light treatment, and is good in safety and suitable for mass production.

The invention provides an anal fistula biological suppository and a preparation method thereof. The anal fistula biological suppository uses small intestine submucosa tissues of inbred line animals without cell and DNA (deoxyribonucleic acid) components as the raw material, completely reserves the extracellular matrix component and structure, and has a micropore structure. The preparation method of the anal fistula biological suppository comprises the following operation steps: determination of animal source, pretreatment and rough cleaning of small intestine tissues, virus inactivation, cell removal, DNA removal treatment, formation, packaging and sterilization. The anal fistula biological suppository prepared by the method uses an inbred line animal as an animal source, and thus, the hereditary features are pure, stable and uniform, thereby radically ensuring the stability and uniformity of different batches of products; and the anal fistula biological suppository has fewer animal source DNA residues, completely reserves the three-dimensional structure of natural ECM, and has the advantages of low immune source property and high infection resistance.