102results about How to "Easy and economical to make" patented technology

The invention relates to an electrosurgical instrument for coagulating and/or cutting biological tissue, which can be manufactured easily and economically, wherein a surgical intervention is to be carried out easily and reliably with the instrument. For this purpose, the instrument comprises the following:

• • two linked branches which can be moved toward one another,
  • gripping devices at a proximal region of the branches or of the instrument for bringing the branches together,
  • electrode parts at a distal region of the branches or of the instrument for grasping tissue and for conducting an HF current through the tissue,
  • current feed devices for feeding the HF current to the electrode parts from an HF generator,
  • a switching device for activating the HF current with the branches brought together,
  • at least one spacing element to form a defined minimum spacing between the electrode parts,
  • at least one elastically deformable element, which is arranged at one of the branches or the gripping devices such that, on closing the branches and reaching the minimum spacing, at least one region of the gripping devices can be moved further in the proximal region for actuating the switching device.

The instrument can also be carried out as a shaft instrument, wherein at least one electrode part is movable through a shaft in its extension direction.

A bifurcated graft having a trunk portion and two limb portions, each defined by a docking end and a non-docking end, that is assembled in-situ. The trunk and limb portions are supported by a combination of full and partial stent structures that are connected by longitudinal stent struts to form a continuous stent lattice. The diameters of the docking sections may be standardized such that any limb portion may be inserted into any trunk portion, providing the same degree of mechanical interference for trunk and limb portions having non-docking ends of various diameters.

A process for preparing high-capacity microreticular agarose gel medium includes such steps as dispersing the granular calcium carbonate as hole-forming agent in the aqueous solution of agarose to obtain suspension, adding it to salad oil, adding emulsifier Span80, emulsifying while stirring, quick cooling for sphericizing, adding epoxy chloropropane, cross linking, reducing with sodium borohydride, and using diluted hydrochloric acid to remove granular calcium carbonate.

An ion-exchanging chitosan microsphere, especially a chitosan microsphere cross-linked with sulfuric acid, the preparation method and a medicinal carrier of the chitosan microsphere cross-linked withsulfuric acid. The method relates to preparing chitosan microspheres by phase separation, comprises: first adding the chitosan solution into a nontoxic oil phase, then adding an emulsifying agent anda dispersing agent, adding sulfuric acid solution for cross-linking, after reaction, washing the resultant product, drying by vacuum and getting chitosan microsphere cross-linked with sulfuric acid. The microspheres of the invention are smooth, have the sphere configuration, could be used for a medicinal controllable carrier.

The present invention provides one kind of soil repairing solid compound microbe microball and its preparation process. The soil repairing solid compound microbe microball is prepared with calcium alginate as embedding material and solid calcium carbonate as solid pore-creating agent to embed petroleum hydrocarbon degrading fungi, bacteria and nutritive matter, and the preparation process includes suspension preparation, microball formation, eliminating pore-creating agent and other steps. The present invention has the advantages of solid carrier maintained, has super large pores for reinforced mass transfer and embedded fungi, bacteria and nutritive matter, and thus possesses the advantages of high mass transferring speed, protection, nourishing, high activity and stability, etc. This kind of solid compound microbe microball may find its wide application in the biological repair of petroleum polluted soil.

A semiconductor laser device includes an edge-emitting laser monolithically integrated with a diffractive lens formed on the chip surface to emit a focalized or collimated beam in a direction perpendicular to the surface. An upper reflective surface and an angled reflective surface are formed in the chip upper surface. A lower reflective surface is formed in the chip lower surface. The laser, angled reflective surface, upper reflective surface, lower reflective surface and diffractive lens are oriented in relation to one another so that a first portion of the light emitted by the laser impinges directly upon the upper reflective surface, which reflects it onto the angled reflective surface, while a second portion of the light emitted by the laser impinges directly upon the angled reflective surface. The angled reflective surface reflects the light portions onto the lower reflective surface, which in turn reflects them through the diffractive lens.

The invention relates to LH microbes and their preparation method and use. The LH microbes are novel microbes which can effective treat sewage and reduce a discharge amount of sludge. The invention provides the preparation method and the use of the LH microbes. The LH microbes are combined multi-bacterium microbes. The combined multi-bacterium microbes comprise bacillus natto, bifidobacteria, bacilli, actinomycetes, photosynthetic bacteria, acetic acid bacteria, saccharomycetes, lactic acid bacteria and nitrifying bacteria.

The invention relates to fine-particulate zirconium titanates or lead zirconium titanates and a method for production thereof by reaction of titanium dioxide particles with a zirconium compound or a lead and zirconium compound. The titanium dioxide particles have a BET surface of more than 50 m²/g. The lead zirconium titanates can be used for the production of microelectronic components.

The invention belongs to the filed of polymer, particularly relates to a method for preparing agarose cross-linked gel microspheres and provides microspheres which are good in mechanical property, high in heat resistance and pressure resistance and uniform in particle size. An agarose solution serves as an aqueous phase, methylbenzene serves as an oil phase, epoxy chloropropane is adopted for performing cross-linking in the forming process of agarose microspheres, and the agarose gel microspheres good in mechanical property are prepared. The invention further aims at providing the convenient and simple preparation method of the agarose cross-linked gel microspheres.

The invention relates to a preparation method for oily and oil soluble drug nanocapsules, and aims at solving the problem that the existing nanocapsules prepared by the existing method have low packing efficiency and are large in grain size. The preparation method comprises the following steps of 1. preparing gelatin solution and chitosan solution; 2. preparing O/W emulsion with grain size of nanoscale; 3. adding the chitosan solution into the O/W emulsion with grain size of nanoscale so as to obtain mixed liquor; and 4. regulating pH value of the mixed liquor so as to obtain compound condensate, diluting the compound condensate and adding a curing agent, and then drying so as to complete the preparation of oily and oil soluble drug nanocapsules. The preparation method for oily and oil soluble drug nanocapsules is applicable to the technical field of medicines.

The invention belongs to the field of chitosan, in particular a process for preparing microcapsule by cross bonding vanillic aldehyde (microcapsule) and chitosan, and the use of the chitosan microcapsule in protein, polypeptide macromolecular medicament and common medicament colon targeting medicine administration, the microcapsule is prepared from vanillic aldehyde cross bonding chitosan.

The invention relates to a petroleum-degrading bactericide and also relates to a preparation method of the petroleum-degrading bactericide. The preparation method of the petroleum-degrading bactericide comprises the following steps: (1) performing enlage cultivation on such bacteria as caulobacter segnis, candida parapsilosis, brachybacterium phenoliresistens, arthrobacter globiformis and sporidiobolus salmonicolor till the concentration of the bacteria is 10<9>-10<10> cfu/g, and uniformly mixing according to the mass ratio of 3: 2: 2: 1: 1 to obtain a mixed culture; (2) fermenting the mixed culture in a liquid fermentation culture medium for 48-60 h; (3) carrying out centrifugal separation to obtain thick strain cells; (4) uniformly mixing the thick strain cells with a 0.9% NaCl solution and a sea mud leachate; (5) adding nutrient substances, and then preserving at 4 DEG C in a sealed manner. The petroleum-degrading bactericide is high in petroleum degradation rate.

The invention relates to a preparation method for a nanometer magnesium oxide ozone catalyst and an advanced treatment method for catalytically oxidizing wastewater of coal chemical industry by using the catalyst. The invention belongs to the technical field of wastewater treatment and environmental catalysis and specifically relates to the preparation method for the nanometer magnesium oxide ozone catalyst and the advanced treatment method for catalytically oxidizing wastewater of coal chemical industry by using the catalyst. The invention aims to solve the problems of the traditional preparation method for magnesium oxide that the active components are easy to lose, the oxidizing rate and the mineralization rate are both low when the ozone is singly used for removing the pollutants, the homogeneous catalyst cannot be reused, the secondary pollution is introduced and the catalytic effect of the metallic oxide catalyst is unstable. The preparation method for the catalyst comprises the following steps: 1) preparing MgCl2 solution; 2) adding a dispersing agent; 3) dropping NaOH solution for ageing; 4) washing; and 5) drying. The water treatment method comprises the following steps: 1) adding the nanometer magnesium oxide ozone catalyst; and 2) introducing the ozone for performing catalytic oxidation reaction, thereby completing the advanced treatment for the wastewater of coal chemical industry.

The invention relates to a servobrake for motor vehicles, the control valve (12) of which can be actuated by means of an electromagnet (20), independently of an actuating rod (7) that displaces a valve piston (9), said electromagnet actuating a third seal seat (24) that permits the ventilation of the working chamber (4). The third seal seat (24) is configured on a sleeve (32) that cooperates with the electromagnet (20). An annular element (36), that is arranged so that it can be displaced in relation to the third seal seat (24), is supported on the sleeve (32) by means of an elastic or compressible element (37). According to the invention, in order to improve the noise behaviour of the servobrake, the annular element (36) comprises means for guiding an air flow (L) produced during normal braking in the direction of the working chamber (4).

The apparatus for transferring loose material from an unloading station located at a first, upper level to a receiving station located at a second, lower level, comprises a flexible pipe for the passage of the loose material, the pipe having an axis of extension and a first end connected to the unloading station and a second end connected to the receiving station.

The invention provides a method for preparing a film agent by using chitosan and Arabic gum as matrix, and relates to a preparation method of the film agent. With the adoption of the method for preparing the film agent by using the chitosan and the Arabic gum as the matrix, the problem that the conventional film agent is poor in absorption effect, or has high drug-release incomplete residual amount, or has irritation in long-term use can be solved. The preparation method provided by the invention comprises the steps of I, preparing a chitosan solution; II, preparing an Arabic gum solution; and III, mixing the chitosan solution prepared by the step I with the Arabic gum solution prepared by the step II, so as to obtain a mixed solution; heating the mixed solution; stirring after adding drugs, a plasticizer and an absorption promoter, so as to obtain a mixture; and then preparing the film agent by using the mixture through a film coating machine. The film agent is a film agent using the chitosan and the Arabic gum as the matrix. The film agent prepared by the invention has the advantages of low drug residual amount and slight irritation; the biological use rate is improved; the simple preparation process and the temperate conditions can be realized; and the desired raw auxiliary materials are cheap and easy to get. The method for preparing the film agent by using the chitosan and the Arabic gum as the matrix provided by the invention is applied to the field of preparing a pharmaceutical preparation.

A brewable beverage making cup adaptor for cartridge type coffee making machines of the type having an inlet spout for supplying pressurized hot water, includes a cup body defining a chamber for holding a brewable material; a lower closure closing a lower end of the cup body, and including a small discharge opening through which a brewed liquid is discharged; an upper cover closing an upper end of the cup body, and including an inlet opening adapted to be positioned below the inlet spout for the supply of pressurized water to the cup body, and an offset valve opening for fluidly connecting the chamber with ambient atmosphere; and a valve for closing the valve opening when the chamber is filled at least at a predetermined level with the pressurized water and for opening the valve opening when the pressurized water in the chamber falls below the predetermined level.

The invention discloses an intelligent ballast, which comprises a case, wherein a space for placing a moving detection instrument is arranged in the case, a moving detection instrument used for detecting moving signals and sending the moving signals to a signal receiving device is placed in the space for placing the moving detection instrument, and a layer of stress film is pasted on the surface of the case. The intelligent ballast has the advantages that the structure is reasonable, the appearance is the same as that of an ordinary intelligent ballast, and the intelligent ballast can be enabled to realize the same moving characteristics as other ballasts; the collected data can almost meet all practice and research requirements; the manufacturing is simple and economic, a 3D (three-dimensional) printer can be utilized for realizing the large-scale manufacturing, the wireless communication can realize the matching with an intelligent mobile phone, and the convenience degree of data transmission and collection is greatly improved, so the efficiency is greatly improved.

The invention discloses a sheet-shaped heating-type electronic cigarette. The electronic cigarette comprises an appliance and a cigarette body. The appliance comprises a shell, a power supply part, aheating part and a clamping part; the heating part comprises a sheet-shaped insertion supporting part and heating elements; the cigarette body comprises a liquid storage part, a suction nozzle part and a cigarette body packaging part; the liquid storage part comprises a medium which can adsorb tobacco tar and the tobacco tar which is adsorbed by the medium; the clamping part can contain and support the cigarette body, and the appliance is matched with the cigarette body in the mode that the insertion supporting part is inserted into the liquid storage part. During suction, the liquid storage part which contains the tobacco tar is inserted into the appliance and is heated, so that smoke is generate and sensed by a smoker; after suction, a next round of suction can be conducted by replacingthe cigarette body. The heating elements can be arranged on a single surface or double surfaces of the insertion supporting part, so that the atomizing capacity of the sheet-shaped heating-type electronic cigarette for the tobacco tar is greatly improved. The sheet-shaped heating-type electronic cigarette is simple in structure, is sucked hygienically, and is good in simulation sense, convenient to use and environmentally friendly, the cigarette body is replaced rapidly, the risks of oxidative deterioration and tar leakage of the tobacco tar are greatly lowered, and the sheet-shaped heating-type electronic cigarette has broad application prospects.

The present invention relates to a biodegradable ceramic fiber composition for high-temperature heat insulating material having good solubility in artificial body fluid, more specifically, a biodegradable ceramic fiber composition for high-temperature heat insulating material comprising network former oxide (SiO2) as a main component, modifier oxides (CaO, MgO, Na2O and K2O) and intermediate oxides (ZrO2 and Al2O3) with appropriate ratios, the composition having good solubility in body fluid; good high- temperature properties; good solubility in body fluid even in high- viscosity range of high SiO2 content through controlling the content of R2O wherein R is alkali metal; and good heat resistance, good compressive strength and good restoration when used at high temperature through controlling the content of CaO + MgO; and from which the fiber can be produced easily and economically by using conventional equipments with high production yield.

The invention discloses a calcium aluminate cement preparing method. According to the method, raw materials including calcium carbonate, aluminum oxide and aluminite powder are dosed firstly; the weighed raw materials are mixed; the evenly mixed raw materials are formed; the formed materials are placed in a self-propagating high-temperature furnace for reaction; a sample is taken out after temperature is reduced to be indoor temperature, and the sample is ground to generate calcium aluminate cement. The calcium aluminate cement prepared with the method contains 68-74% of CaO.Al2O3, 18-25% of CaO.2Al2O3, and the balance 12CaO.7Al2O3 and trace impurities. The phase composition of the calcium aluminate cement prepared with the method is similar to that of current calcium aluminate cement. The calcium aluminate cement prepared with the method has the advantages that the technology is simple, energy consumption is low and cost is low and can be widely applied to multiple industries including metallurgy and building materials.