3137results about How to "Improve durability" patented technology

An implant for treating brain aneurysms, especially terminal aneurysms, comprises a neck cover and elongate shaft removably secured to an embolic delivery catheter. As such, the shaft aids in directing and placing the cover at the aneurysm neck, protecting the delivery catheter from adhesion with the embolic material, and securing the cover in place with connection or adhesion of the shaft to the embolic material delivered through the catheter. The implant can be anchored at the aneurysm either by interface and/or adhesion of the shaft or shaft and cover with the resident embolic materials.

This invention provides a fibrin sealant dressing, wherein said fibrin sealant may be supplemented with at least one composition selected from, for example, one or more regulatory compounds, antibody, antimicrobial compositions, analgesics, anticoagulants, antiproliferatives, antiinflammatory compounds, cytokines, cytotoxins, drugs, growth factors, interferons, hormones, lipids, demineralized bone or bone morphogenetic proteins, cartilage inducing factors, oligonucleotides polymers, polysaccharides, polypeptides, protease inhibitors, vasoconstrictors or vasodilators, vitamins, minerals, stabilizers and the like. Also disclosed are methods of preparing and/or using the unsupplemented or supplemented fibrin sealant dressing.

An integrated tracheal tube/suction ventilation and co-committal secretion removal device having first and second coaxially arranged conduits where the first interior conduit forms a lumen to deliver gas, and a circumferentially arranged second conduit lumen is structurally adapted to serve as an integral suction lumen for removal of both expiratory gases and secretions. The distal end outlets of both lumens terminate between the device's fixing member and its distal end. The two lumen outlets are arranged such that relative to each other and the device the first interior pipe conduit forming lumen's outlet is located at the distal end and the second pipe conduit lumen's outlet is located at or near the distal side of the fixing member. This selection of relative positioning facilitates optimal deliver of breathing gas to a user in conjunction with removal of expiratory gases and secretions. The device is sized for location of the fixing member to its distal end from a patient's carina to a patient's larynx.

The invention discloses a hydrophilic polyvinylidene fluoride hollow fiber microporous membrane and the preparation method thereof. The main composition and the mass content of the membrane are 70% to 90% of polyvinylidene fluoride, amphiphilic poly-(propylene oxide-oxirane), 5% to 29% of poly-(methacrylic acid- acrylic acid) or poly-(methacrylic acid methyl ester-vinyl alcohol) copolymer and 1% to 5% of nano-silicon dioxide. The membrane preparation method is that all the components are mixed and dissolved with aperture regulator, thickener and solvent to obtain the membrane preparation liquid; after that, the hollow fiber forming is carried out through a dry-wet spinning technique, and finally cleaning and drying are implemented. The obtained membrane has adjustable internal diameter and external diameter, 60% to 80% of porosity and the aperture ranging from 0.01micron to 0.2micron. As a water disposal separating membrane material with excellent performance, the invention has the advantages of being able to be fully humid, organic adsorption resistance and great water flux, etc.

The present invention relates to collagen compositions suitable for use in various tissue augmentation procedures.

An insulation structure of rotary electrical machinery which electrically insulates teeth of a stator from a winding wound on the teeth includes: an insulator made from hard insulation material, disposed on both axial ends of the teeth, and having a side wall disposed along a side surface of the teeth crossing to a circumferential direction thereof, and a high-heat-conductive electrical-insulation resin sheet disposed along the side surface of the teeth and insulating the teeth from the winding, wherein an axial end portion of the high-heat-conductive electrical-insulation resin sheet is disposed between the side wall of the insulator and the side surface of the teeth and is stacked on the side wall in a prescribed axial extent.

A closure for a tubular access port in a medical fluid flow line or other container comprises a removable cap for enclosing and sealing the tubular access port. The cap has a closed end wall. The end wall carries an extending poker to facilitate the pushing of an antiseptic-carrying material into a lumen of the access port. The poker has an outer diameter that is less than the inner diameter of the access port. A method of using the poker is also described.

A method of forming an exchange traded fund (ETF) can include the steps of identifying an investor investment need, identifying funds that can be combined together to meet the investment goal, combining the identified funds to form a macro portfolio and converting the macro portfolio into an ETF. The step of converting the macro portfolio into an ETF can include one or more of generating a set of securities that, when combined, create a portfolio that tracks the performance of the macro portfolio, and constricting an index that is designed to track the performance of the macro portfolio. Other investment vehicles can be formed.

The invention belongs to the technical field of new environment-friendly materials, and particularly relates to a ceramal material for manufacturing hydrogen-enriched water and the preparing method and application thereof. The ceramal material is prepared from, by weight, 30-85 parts of base material component, 20-60 parts of hydrogen-enriched component, 2-25 parts of anti-microbial component, and 3-30 parts of binder. The base material component is prepared from tourmaline, serpeggiante, silicon oxide, calcium oxide and zeolite. The hydrogen-enriched component is prepared from magnesium metal powder, magnesia powder and KDF alloy powder. The anti-microbial component is prepared from zinc oxide, titanium oxide and cerium oxide. The binder is prepared from one or more of high-purity distilled water, carboxypropyl cellulose and bentonite. The ceramal material can be used for manufacturing alkalescent water, negative-potential water and hydrogen-enriched water and also has an anti-microbial function and a water activating function. The invention further provides the preparing method and application of the ceramal material. The technology is simple and easy to realize. The ceramal material can be applied to products including water purifiers, water purifying kettles and cups.

The invention provides a low-cost full-biodegradation polylactic acid sheet and a preparation method thereof, which belong to the technical field of biomaterial. The invention solves the problems that molecular weight attenuation is larger, about 35 percent of the materials with one grade are incapable of directly being recycled to participate in the use, the cost is high as well as popularization and use range are limited during the melt processing of the polylactic acid sheet. The low-cost full-biodegradation polylactic acid sheet is extruded and shaped by the components as the following weight portions: 100 portions of high molecular weigh polylactic resin; 10 to 100 portions of low molecular weigh polylactic resin and 0.2 to 30 portions of processing materials; the number average molecular weight of the high molecular weigh polylactic resin is 90,000 to 150,000 Daltons; the number average molecular weight of the low molecular weigh polylactic resin is 50,000 to 90,000 Daltons. The low-cost full-biodegradation polylactic acid sheet has the advantages of low cost, good mechanical property, good durability, excellent secondary shaping property, simple method and technique flow as well as high maneuverability.

The invention relates to a silver alloy wire and a preparation method thereof. The silver alloy wire is prepared from the following components of 0.5-10 percent of Au, 0-1 percent of Pt, 1-6 percent of Pd, 0-1 percent of Rh, 0-1 percent of Cu, 0-500ppm of Ln, 0-200ppm of Ce, 0-0.5 percent of Al, 0.7-3 percent of Ti, 0-0.2 percent of Si, 0-0.3 percent of Zn, 0-1 percent of Sn, 0-10 percent of Be and the balance of Ag. A directional continuous casting process is adopted. The prepared silver alloy wire overcomes the problem that the bonded silver wire is easily subjected to sulfur corrosion in the prior art, and has a series of other excellent characteristics.

Water-fastness in aqueous ink-jet inks containing water-soluble dyes is achieved by using a specific ionic species having a charge opposite to that on the dye molecule. Anionic dyes typically contain sulfonate (or carboxylate) anionic groups. Using at least one specific ionic species of opposite charge, specifically, phosphonium salts, causes the colorant components to "crash" or precipitate out of the water-based ink onto the print medium due to the formation of a suitable charge complex between the ionic parts of the dye and the opposite charge of the counter-ion species. Other positively charged salts, such as quaternary ammonium salts, carbonium salts, iodonium salts, sulfonium salts, and pyrillium salts may be used to improve aqueous dispersion stability and thus printability. Such additional cationic salt partially replaces the phosphonium salt(s). Alternatively, certain surfactants, such as aromatic ethoxylates, polyethylene oxide ethers, or polypropylene oxide ethers may be used to improve print quality.

The invention relates to antibacterial viscose containing an artemisia argyi oil component and a production method of the antibacterial viscose. The antibacterial viscose takes an artemisia argyi oil microcapsule as an antibacterial agent and a spinning solution is composed of the artemisia argyi oil microcapsule and mucilage glue, wherein the adding ratio of the artemisia argyi oil microcapsule is 10%-30% of alpha cellulose in the mucilage glue and the antibacterial property index are as follows: the antibacterial value is more than 4.0 and the sterilization value is 2.7. The production method of the antibacterial viscose containing the artemisia argyi oil component comprises the following steps: preparing artemisia argyi emulsion, preparing the artemisia argyi oil microcapsule, preparing the mucilage glue, preparing the spinning solution, and spinning and molding. The antibacterial viscose not only has the advantages of maintaining water absorption and air permeability of common viscose and being comfort to wear, but also has high antibacterial rate and good endurance; meanwhile, the antibacterial viscose has a good skin-caring effect and can be widely applied to home textile articles, underwear, sports shirts and the like.

The invention discloses a water treatment method utilizing complex-ferrous-activated persulfate oxidation. The treatment method comprises the following steps: (1) firstly determining the pH value and CODcr (chemical oxygen demand) value of wastewater to be treated; (2) adding a complexing agent which is selected according to the pH value to the wastewater, and then adding ferrous ion to the wastewater for sufficiently mixing; and (3) adding a persulfate to the wastewater treated in the step (2) according to the CODcr value for full reaction to obtain purified wastewater. The method is applicable to the wastewater with various pH values; by using the method, the acid feeding cost is greatly reduced and the treatment cost of per ton of wastewater is lowered by approximate 20%; in addition, complex ferrous can slowly release free ferrous ion, thus ensuring that organic pollutants in the wastewater are durably and efficiently purified by a persulfate oxidation method and increasing the pollutant removal efficiency by 20-30%; and the method has the advantages of good durability and high efficiency, is environmentally-friendly, is easy to operate, and has great application potential in the field of environmental pollution treatment.

The invention discloses a method for utilizing a heterogeneous catalyst to efficiently activate persulfate so as to treat organic wastewater, belonging to the technical field of water pollution control. According to the method, nano Fe0, nano FeOxHy (y=2x-3 or 3y=6x-8) and FeOxHy@Fe0 (FeOxHy@Fe0, y=2x-3 or 3y=6x-8) nano composite materials are used as a heterogeneous catalyst, so that persulfate is activated to produce sulfate free radicals having strong oxidizing property, thereby removing nondegradable organic substances in wastewater. Besides, due to the characteristics of high specific area, high catalytic activity and the like, the solid-phase nano catalyst can efficiently and persistently activate the persulfate to be subjected to heterogeneous activation. The method is applicable to treatment of various organic wastewater, has the advantages of high efficiency, favorable persistence, convenient operation process and environment friendliness, and can efficiently remove toxic and harmful pollutants in the wastewater in a wider pH value range, thus providing broad prospects for treatment of toxic, harmful and nonbiodegradable organic wastewater.