141results about How to "Good antithrombotic" patented technology

The present invention is directed to pharmaceutical compositions and methods of using combination therapies containing [4-(6-fluoro-7-methylamino-2,4-dioxo-1,4-dihydro-2H-quinazolin-3-yl)-phenyl]-5-chloro-thiophen-2-yl-sulfonylurea, or a pharmaceutically acceptable salt thereof, for the treatment of thrombosis diseases.

A polymeric composition that generates nitric oxide and a process for rendering the surface of a substrate nonthrombogenic by applying a coating of the polymeric composition to the substrate are disclosed. The composition comprises: (1) a crosslinked chemical combination of (i) a polymer having amino group-containing side chains along a backbone forming the polymer, and (ii) a crosslinking agent containing functional groups capable of reacting with the amino groups; and (2) a plurality of nitric oxide generating functional groups associated with the crosslinked chemical combination. Once exposed to a physiological environment, the coating generates nitric oxide thereby inhibiting platelet aggregation. In one embodiment, the nitric oxide generating functional groups are provided by a nitrated compound (e.g., nitrocellulose) imbedded in the polymeric composition. In another embodiment, the nitric oxide generating functional groups comprise N₂O₂⁻ groups covalently bonded to amino groups on the polymer.

A dripping pill of breviscapine is prepared from breviscapine and polyethylene glycol (PEG 4000) 5-8 times through conventional process. Its advantages are high curative effect and high biological utilization rate.

The invention provides an artificial blood vessel loaded with pseudo-ginseng medicines, and a preparation method and application for the artificial blood vessel. The artificial blood vessel sequentially consists of an inner layer, a middle layer and an outer layer which are closely connected with one another; the outer layer consists of nondegradable polymer materials; the middle layer consists of degradable high polymer materials and pseudo-ginseng powder distributed on the surface and/or the inside of the middle layer; the inner layer consists of degradable natural biological materials and pseudo-ginseng powder distributed on the surface and/or the inside of the inner layer; the mass percent of the pseudo-ginseng powder in the inner layer is larger than 5%; the content of the pseudo-ginseng powder in the middle layer is higher than that of the pseudo-ginseng powder in the inner layer; the outer layer is a nondegradable layer and is mainly used for protecting and replacing a blood vessel for a long time; the middle layer is a long-acting antithrombosis layer, can degrade high polymers, and can slowly release medicines so as to realize a long-acting antithrombosis effect; and the inner layer is a quick degrading layer, when the blood vessel is punctured and injured by a foreign object, the pseudo-ginseng medicines wrapped in the blood vessel are directly exposed on a wound, blood is stopped quickly, and the artificial blood vessel is particularly suitable for application to products such as hematodialysis.

Disclosed is a antihypelipidemic and antihyperglycemic health food for preventing diseases including cardiovascular disease, diabetes, adjusting internal secretion, resisting osteoporosis and cancer, and beauty treatment. The raw materials include soybean powder 15-30 parts, pumpkin powder 15-30 parts, soybean isoflavones 0.5-1.5 parts, soybean saponin 2-5 parts, astragalus root 10-20 parts, wolfberry fruit 10-15 parts, kudzuvine root 10-15 parts, Chinese yam 10-15 parts, lotus plumule 6-10 parts, Siberian solomonseal rhizome 6-10 parts, cassia seed 6-10 parts, lily 5-8 parts, mulberry leaf 5-8 parts and ginseng 3-5 parts.

The present invention provides a new application of tanshin polyphenolic acid B in preparing medicine for treating tumor. Extraneous research shows that tanshin polyphenolic acid B has the function of killing tumor cell and animal test shows its antineoplastic effect. In the present invention, the cation in the salt of tanshin polyphenolic acid B may be Fe ion, Na ion, K ion, Ca ion or Mg ion, preferably Mg ion. The said medicine may be in any medicine form, oral liquid, injection, tablet or capsule.

The present invention provides a catheter tube having excellent insertability into the body, excellent operability and an excellent anti-thrombogenic property, and also provide a catheter having the tube. A catheter tube comprising a mixture of an isobutylene block copolymer and a thermoplastic polyurethane resin, wherein the isobutylene block copolymer is composed of a polymer block mainly comprising isobutylene and a polymer block mainly comprising a monomeric component other than isobutylene; and a catheter using the tube.

The present invention provides a thrombin derivative, comprising an A chain and a B chain, the B chain having an amino acid sequence in which one or more kinds of active center amino acids selected from the group consisting of serine at position 205, glycine at position 203, aspartic acid at position 99, and histidine at position 43 in an amino acid sequence of a thrombin B chain are substituted, having the properties: (1) cleaving a thrombin substrate at the ratio of 10% or less when it is reacted with the thrombin substrate in 50 mM Tris-HCl (pH 7.4) containing 0.1 M NaCl at 37° C. for 3 hours, and (2) maintaining a structure of exosite I.

The invention relates to a heparin derivative polysaccharide mixture and a preparation method and a medicinal composition thereof. Specifically, the heparin derivative polysaccharide mixture of the invention is a degradation product of heparin or heparin ester or heparin ester salt and is characterized in that the weight-average molecular weight is 3,100 to 4,500 Daltons, the activity of anti-coagulation factor Xa is high, and the activity of anti-coagulation factor IIa is low. The heparin derivative polysaccharide mixture of the invention has excellent antithrombotic performance, low side effect, and has no residues of adverse components such as organic base and dermatan sulfate and the like.

The invention discloses a preparation method of Xinhui dried tangerine peel enzyme beverage. By adopting four industrial advanced unique processes such as natural fermentation and chelating process, low-high-pressure bidirectional homogenizing, high-temperature instantaneous sterilization and low-high-temperature canning, the specific nutritional ingredients of Xinhui orange, dried tangerine peel,rhizoma polygonati, fructus lycii, fructus crataegi and the like can be maximally reserved; and in the prepared Xinhui dried tangerine peel enzyme beverage, the content of crude polysaccharide and total flavonoids is increased, the extraction rate is high, the taste is good, and the tissue state stability is good.

The invention relates to a novel non-virus cationic gene vector and the process for preparation. The process for preparation comprises the following steps: firstly, utilizing an oxygen anion polymerization method to synthesize polycation type electrolyte and segmented copolymer which contains polycation type electrolyte, and then leading polycation type electrolyte and DNA to mutually compound in salting liquid whose PH is 7.4 and buffer solution, achieving the packing of polycation type electrolyte to DNA, and the surface of DNA/ polycation compound which is formed is with positive charge, adding segmented copolymer MePEO-b-PMAA which contains polycation type electrolyte in a system, leading PMAA segment with negative charge to be absorbed on the surface of the DNA/ polycation compound through electrostatic force action and hydrogen bond effect, achieving the packing to compounds. The novel non-virus cationic gene vector has the advantages of mild polymerization reaction condition, controllable molecular weight, narrow molecular weight distribution, simple process for preparing gene vector, high stability and bioavailability, low toxicity and the like.

The invention belongs to the field of biomedical engineering, and particularly relates to a preparing method of a biological source venous valve.In the preparing process, a biological material is cleaned, disinfected, subjected to cell lysis, cell digestion and nucleic acid digestion and then combined with heparin, and a covalence-ion-covalence heparin combining method is adopted in the combining process.The biological source venous valve prepared through the method is high in biophysical performance, antithrombus and anti-calcification performance and has certain clinical application and popularization prospects.

The invention provides an in-vivo enrichment device for circulating tumor cells. The in-vivo enrichment device comprises a catheter body capable of puncturing to a central vein through a peripheral vein, a plurality of sieve holes are formed in the catheter wall of the catheter body, the catheter body is filled with trapped particles of targeting circulating tumor cells, and a blind end is arranged at the front end of the catheter body. According to the in-vivo enrichment device for the circulating tumor cells, the inside of the catheter body is filled with assembling hydrophilic medicine or trapped particles of a specific antibody, the sieve holes are formed in the pipe wall of the catheter body, CTC in blood is continuously combined on the trapped particles inside the catheter body through specific targeting accordingly, and efficient and high-quality trapping of the CTC in blood is achieved; the in-vivo enrichment device has the advantages that the enrichment device is used in vivo, efficient trapping is achieved, and clinical application is convenient; the in-vivo enrichment device can provide molecular-gene diagnosis information based on the CTC for early diagnosis, targeting therapy, recurrence and metastasis detection, treatment evaluation and the like of tumor, and has quite-broad application prospects.

The compound orally taken thrombolytic preparation is used in treating retina venous blocking, vascular retina patholgoic change, coronary heart disease and angina pectoris. It is prepared with notoginseng, astragalus root, red sage and figwort as material and prepared in the forms of drip pills, granule, table, capsule or oral mixture liquid. The present invention has unique recipe and preparation process and obvious curative effect.

This invention discloses a method for manufacturing pineapple proteinase freeze-dried powders, which can solve the problem of low activity faced by conventional pineapple proteinase. The method comprises the steps of: washing pineapple stems with water, pressing to obtain juice, filtering, adsorbing the filtrate with zinc oxide, desorbing, ultrafiltering, concentrating and freeze-drying to obtain pineapple proteinase freeze-dried powders, whose enzyme activity can reach 600 million units per gram.

The invention discloses a single-chamber reciprocating blood pump with magnetic and elastic linkage. The technical scheme includes that the single-chamber reciprocating blood pump with magnetic and elastic linkage comprises a pump body, a storage cavity for blood storage is arranged in the pump body, the storage cavity gets larger or smaller with the change of compression, the pump body is externally coated and wound with a conductive coil, a magnet sliding along the lengthwise direction of the pump body is arranged in the inner cavity of the pump body, one end of the magnet is connected withthe storage cavity in an abutted manner, the magnet slides relative to the pump body to squeeze the storage cavity, one end of the magnet, away from the storage cavity is provided with a tension spring, and the conductive coil drives the magnet to move in a reciprocating manner along the lengthwise direction of the pump body in power supply or power failure. By the arrangement, the rhythm of heartbeat is simulated, and injury to target organs by continuous perfusion can be avoided.

The invention belongs to the technical field of high polymer materials, and particularly discloses a heat-resistant insulating resin composition. The heat-resistant insulating resin composition comprises the following raw materials in parts by weight: 60-80 parts of polypropylene resin, 22-35 parts of polyacrylate rubber, 15-26 parts of polyurethane rubber, 7-15 parts of polyisobutene grafted maleic anhydride, 15-30 parts of plasticizing agent, 5-10 parts of fire retardant, 5-10 parts of antioxidant, 3-6 parts of anti-aging agent, 4-8 parts of crosslinking agent and 1-2 parts of assistant crosslinking agent. The heat-resistant insulating resin composition disclosed by the invention has excellent mechanical property, flame retardant property and high temperature resistance.

The invention discloses a preparation method of a Xinhui pericarpium citri reticulatae enzyme beverage having anti-tumor and immunity enhancing functions. The preparation method includes steps of: 1)crushing a national geographical indication protection product, Xinhui pericarpium citri reticulatae and Xinhui tangerine whole fruits (including peel, pulp, segment membrane, and seeds) in a crushingsystem; 2) fermenting the crushed raw material through combination of natural fermentation and modern fermentation technology; 3) after the fermentation is completed, performing solid liquid separation and delivering the materials to a blending and homogenizing system for performing low- and high-pressure homogenization respectively; 4) after the homogenization, sterilizing and fill-packaging theproduct. In the invention, through double-direction fermentation, solid liquid separation, blending, low- and high-pressure homogenization, sterilization and medium/high-temperature fill-packaging, adifficult problem of food safety in the industry is completely solved, and the total flavones, crude polysaccharides, probiotics, probiotic active factors, and Xinhui tangerine metabolite, which arehigh in content in the Xinhui pericarpium citri reticulatae and Xinhui tangerine, are maintained as most as possible.

The shaft-less open impeller suitable for micro pump is one pollution-free and leak-less centrifugal mixed flow pump device suitable for continuous flow artificial heart. The impeller includes one vane combination and one vane holder, and the vane has pressure surface in the horizontal angle of 5-20 deg, conic upper end part of conic angle 40-60 deg, the ration between planar projection area of vane and outer circle area of the impeller of 0.4-0.8, and inlet angle and outlet angle of 45-50 deg. The impeller has effective inhibition of the secondary flow in the pressure surface of the vane, improved inside flow structure, reduced flow loss, small diameter and thus reduced damage to blood cell. The present invention may be also used in various kinds of centrifugal pump or mixed flow pump to improve the performance of the pumps.

One aspect of the invention contemplates a mutant E-WE thrombin precursor that contains the SEQ ID NO:1 amino acid residue sequence. Another aspect contemplates a thrombin precursor that contains the amino acid residue sequence Asp/Glu-Gly-Arg at positions 325, 326 and 327 based on the preprothrombin sequence. A third aspect contemplates a thrombin precursor that contains the SEQ ID NO:1 amino acid residue sequence as well as the amino acid residue sequence Asp/Glu Gly Arg at positions 325, 326 and 327 based on the preprothrombin sequence. Also contemplated is a composition that contains an effective amount of mutant thrombin dissolved or dispersed in a pharmaceutically acceptable carrier. A method is also disclosed for enhancing treating and preventing thrombosis in a mammal in need using that composition.

The invention discloses compounds of the general formula I and provides a preparation method of the compounds which have good antithrombotic activity, wherein, R represents CH (CH3) CH 2CH3, CH (CH3)2, CH2CH (CH3)2 , CH3, H, CH2C6H5, CH2C6H4-OH-p, indole-5-group-CH2, imidazole-4-group-CH2-, CH2CH2SCH3, CH2COCH3, CH2CH2CO2CH3, CH2CH2CO2H, CH2OH, CH (OH)CH3, CH2CH2CH2NHC(NH) NH2, CH2CONH2, CH2CH2CONH2, CH2SH, CH2CH2CH2CH2NHCBz or CH2CH2CH2CH2NH2.