32results about How to "Promotes deposition growth" patented technology

The invention discloses a bioactive artificial tooth root capable of slowly releasing cerium (a rare-earth element), which consists of a pure titanium and titanium alloy artificial tooth root substrate and a cellular sodium titanate bioactive layer loaded with rare-earth element cerium and bone morphogenetic protein (BMP). The sodium titanate bioactive layer with a cellular structure is combined with the surface of the metal substrate, and prepared by the mutual alternate stacking of the sodium titanate cellular structures generated by the hydro-thermal reaction of the surface of the titaniumand titanium alloy substrate and solution of sodium hydroxide, the cerium and the sodium are subjected to cation exchange and then doped into a coating, the BMP is compounded in the cellular structure under the action of a centrifugal force and a capillary. The preparation method thereof comprises the following steps: processing the artificial tooth root by selecting the pure titanium and titanium alloy; obtaining the sodium titanate layer with the cellular structure on the surface of the artificial tooth root by adopting lye hydrothermal synthesis technology; doping the rare-earth element cerium in the cellular sodium titanate layer through solution soaking ion exchange; finally, loading the bone morphogenetic protein in the cerium-doped cellular sodium titanate bioactive layer by adopting centrifugal load technology.

The invention relates to a bioactive artificial joint capable of slowly releasing trace element selenium. The artificial joint consists of a pure titanium or titanium alloy artificial joint matrix and a microporous sodium titanate surface layer loaded with trace sodium selenite and bone morphogenetic protein (BMP), wherein the sodium titanate bioactive layer with microporous structures is combined with the surface of the metal matrix and formed by mutually and alternately stacking the sodium titanate microporous structures generated by carrying out a hydrothermal reaction on the surface of the titanium or titanium alloy matrix and a sodium hydroxide solution, and the trace sodium selenite and the BMP are compounded in the microporous structures through centrifugal force and the effect of capillaries. A preparation method of the bioactive artificial joint comprises the following steps of: firstly, selecting a processed pure titanium or titanium alloy artificial joint; then obtaining the sodium titanate layer with the microporous structures on the surface of the titanium artificial joint by adopting an alkali liquor hydrothermal synthesis technology; and finally, loading the sodium selenite and the BMP in the microporous sodium titanate layer by adopting a centrifugal loading technology.

The invention provides a trachea cannula core and a preparation method thereof. The trachea cannula has the advantages that the operation is simple, the safety is realized, and the efficiency is high. The trachea cannula core comprises a guide tip end and a moulding cannula core, wherein the guide tip end extends outwards from one end of the moulding cannula core; the guide tip end is connected with the moulding cannula core; the outer diameter of the trachea cannula core of a trachea cannula is smaller than the inner diameter of the trachea cannula; the trachea cannula core is arranged in the trachea cannula; the length of the trachea cannula is smaller than the length of the trachea cannula core. The trachea cannula core has the advantages that the guide tip end can replace the trachea cannula, the front end is thinner in the intubation process, and the guide tip end is easily inserted into a trachea; the traditional intubation type is changed, the thinner guide tip end is firstly inserted, and then the trachea cannula is pushed, so that the safety is realized, and the efficiency is high; by combining the moulding cannula core and the guide tip end, while the guide function is guaranteed, the moulding is maintained, the injury to the human body by metal is avoided, more safety is realized, the operation is easy, the price is low, and the manufacturing is convenient.

The invention relates to a trace element selenium slow-release type artificial tooth root based on a nanometer tube array surface. A layer of sodium titanate nanometer tube array layer is formed on the surface of a metallic titanium base body of the artificial tooth root, and a trace amount of sodium selenite and bone morphogenetic protein are loaded in the sodium titanate nanometer tube array layer. A preparation method of the trace element selenium slow-release type artificial tooth root based on the nanometer tube array surface comprises the following steps: adopting pure titanium or titanium alloy for processing the artificial tooth root; then, adopting the two-step anodic oxidation technology for obtaining a titanium dioxide nanometer tube array layer with the tubular structure on the surface of the pure titanium or titanium alloy artificial tooth root; next, converting the titanium dioxide nanometer tube array layer into the sodium titanate nanometer tube array layer through an alkaline solution hydrothermal synthesis technology; and finally, loading a trace amount of sodium selenite and bone morphogenetic protein into the sodium titanate nanometer tube array layer on the surface of the artificial tooth root by a centrifugal load technology.

The invention discloses a preparation method and device of an indium arsenide thin film material and belongs to the technical field of semiconductor manufacturing. The method comprises the steps of ultrasonically cleaning a single-side polished mono-crystalline Si substrate and drying, and then feeding the dried mono-crystalline Si substrate into a vacuum chamber for heating and dehydrogenation; heating an arsenic simple substance for volatilization, and driving As air to flow through the surface of the mono-crystalline Si substrate to form an Si-As bond; activating the surface of the mono-crystalline Si substrate, and then growing a buffer layer at a low temperature; growing an indium arsenide thin film on the surface of the mono-crystalline Si substrate; and carrying out furnace cooling to a room temperature, thereby obtaining the indium arsenide thin film material. The method is low in demands on instrument and equipment, low in cost, easy to operate and relatively good in repeatability; and the obtained indium arsenide thin film is uniform and smooth in appearance and surface, preferential growth along (111) orientation is achieved, the thickness is 4.83 microns and the crystal quality is good.

The invention relates to a functional artificial tooth root with trace element selenium slow release and a preparation method thereof. The artificial tooth root is composed of a pure titanium or titanium alloy artificial tooth root base and a micro-sodium selenite and bone morphogenetic protein (BMP)-loaded artificial tooth root. The composition of the microporous sodium titanate surface layer. The bioactive coating of the sodium titanate layer with the microporous structure mentioned above is combined with the surface of the metal substrate, and the microporous structures of sodium titanate generated by the hydrothermal reaction between the surface of the titanium or titanium alloy substrate and the sodium hydroxide solution are alternately stacked and formed. In this way, trace amounts of sodium selenite and BMP are compounded in the microporous structure by centrifugal force and capillary action. The preparation method is as follows: firstly select pure titanium or titanium alloy to process the artificial tooth root; then use the alkaline solution hydrothermal synthesis technology to obtain a sodium titanate layer with a microporous structure on the surface of the titanium artificial tooth root; Sodium selenite and bone morphogenetic protein are loaded in the sodium layer.