172results about How to "No infection" patented technology

A safety type intravenous transfusion retention needle with wings is provided, which comprises puncture assembly, retention cannla assembly, a needle protection cap and a safety casing. The puncture assembly consists of puncture needle wings and puncture needle tubing. The retention assembly comprises a three-way rest, a soft tube, a joint, a sealing member and a retention cannula. The protection casing is a tubular casing, with a lock groove for positioning the root of the puncture wings is provided on the rear end of the casing, in addition, a guiding groove is cut along with the said safety casing length direction from the front end of the locking groove. The front end of the safety casing is connected with the first interface of said three-way rest and the root of the puncture needle wings is set inside of said guiding groove of the protection casing. The present invention can heal the needle in the safety protection casing in the needle tubling pulling out process, which enables the medical care personnel away from the infection of contagious disease due to the puncture accident. The invention has simple and compact structure and low cost.

The invention discloses a long-acting sustained-release wound dressing containing levofloxacin sustained-release microspheres. According to the preparation method of the wound dressing, levofloxacin sustained-release microspheres with grain diameter between 10 and 20mu m are fixed in a composite medical non-woven fabric which mainly comprises chitosan fiber, alginate fiber, viscose fiber, and hydrophobic ethylene propylene fiber; and the long-acting sustained-release wound dressing is prepared by taking the levofloxacin sustained-release microspheres as a medicinal component. In a use process, the medicament quickly release levofloxacin after contacting the blood, tissues and surrounding skin of the wound, and can continuously release levofloxacin for a long time, and the effective release of levofloxacin accumulatively reaches 168h. The long-acting sustained-release wound dressing is applied to treatment of bacterium infection of burnt and scalded skin, and the microsphere state medicament can remarkably improve the bioavailability of effective components of the medicament; and the long-acting sustained-release wound dressing has excellent moisture penetrability, hygroscopicity, mechanical tensile property and biocompatibility, the frequency of dressing change can be reduced, and the curative effect and administration safety cam be enhanced.

The present invention is applicable to the field of computer security, and provides a BIOS update protection method, device and system. The method includes: when the device is in the power-on self-test POST stage, after the programmable logic device is started, there is only one output The control signal controls the write protection pin of the ROM chip storing the BIOS to be in the write protection invalid state or the write protection effective state; when the BIOS update is not required and the write protection pin of the ROM chip is in the write protection effective state, the device enters operation The system prohibits BIOS updates through hardware protection. The write protection state of the ROM chip of the present invention can only be modified once in the power-on self-check state, and when the BIOS update is not needed, the BIOS program is protected from virus infection through hardware, effectively improving the safety of equipment operation.

The invention provides a method for executing three-dimensional cardiac ultrasound virtual endoscopy. The method comprises the following steps of: acquiring an ultrasound sectional image on a complete cardiac cycle of a patient heart from data acquisition equipment; acquiring a three-dimensional data set which comprises two-dimensional image information of an overall heat by using the ultrasound sectional image; performing three-dimensional reconstruction according to the data set; setting a moveable and controllable virtual endoscopic viewpoint in a three-dimensional visual image; and controlling the virtual endoscopic viewpoint to move in a three-dimensionally displayed cardiac chamber so as to generate a plurality of frames of magnified images that a structural target in an observed heart is close to an observer continuously in a corresponding cardiac cycle. Due to the adoption of the method, the virtual viewpoint observation position can be converted at any time according to the requirement of the observer; and the observer can observe a movement change situation of a structure in the heart in the complete cardiac cycle.

The invention relates to a division propagation method of anthurium. The method is characterized by comprising the following steps of: selecting strong-growth-vigor anthurium plants with lateral buds for division propagation and drenching potting soil with clear water with a pH value of 5.5-5.8 one day before plant division; cutting the strong-growth-vigor plant with the lateral buds with a sharp knife along the growth direction of an underground rootstalk and soaking the cut with a solution in the concentration 800 times of 50% wettable sanmate powder for a day; then, dipping an aqueous solution containing 0.2-0.4 g of ABT rooting powder No.1 and 1-1.2 g of potassium permanganate for every liter of water; combining two same-size strong-growth-vigor plants with the lateral buds into one to be planted in potting soil; and keeping the moisture of 75-85% in the daytime and 85-90% at night and the illumination of 10000-15000 lux and controlling the temperature to be 25-28 DEG C in the daytime and 20-23 DEG C at night.

The invention relates to a feed for promoting Gaoyou ducks to lay double-yolked eggs. The feed is prepared with the following materials: corn flour, soya bean protein powder, egg shell powder, collagen, cuttlebone powder, vitamin D, vitamin C, vitamin E, glutamine, lysine, methionine and glycyrrhiza flavonoids.

The present invention relates to a Chinese medicine ointment preparation for external application for effectively curing burn and scald. It is made up by using Chinese medicinal materials of borneol, glauberite, talcum powder, phellodendron bark and sesame oil through a certain preparation process.

The invention is suitable for the technical field of detection of novel coronavirus SARS-CoV-2, provides a primer and probe for normal-temperature and isothermal rapid detection of novel coronavirus SARS-CoV-2, and also provides a reagent, method and kit for normal-temperature and isotherma rapid detection of novel coronavirus SARS-CoV-2. The novel coronavirus SARS-CoV-2 can be detected rapidly and specifically in real time under the normal-temperature and isothermal conditions. Under the combined action of the specific primer, specific probe, five engineering enzymes and other chemical components, rapid detection of the target is achieved through nucleic acid colloidal gold test strips. No large-scale equipment is needed, a short detection time, convenient operation and high accuracy areachieved, result interpretation is simple and intuitive, and the primer, probe, reagent, method and kit are especially suitable for on-site detection.

The invention belongs to the technical field of medicine and particularly relates to a biodegradable compound powder-style hemostasis material composed of cross-linked porous corn starch and chitosan / alginic acid compound microballoon. The chitosan adopted by the hitosan / alginic acid compound microballoon can be carboxymethyl chitosan or a compound of a plurality of chitosan with different degrees of deacetylation and different molecular weights, or can be multiaperture chitosan microballoon or other derivatives of chitosan. The cross-linked porous corn starch can be prepared by one or at least two types of the following materials: sweet potate starch, potato starch, cassava starch, corn starch, rice starch, long-shaped rice starch, sago starch, mung bean starch, wheat starch, water caltrop starch, lotus-root starch, sorghum starch and radix puerariae starch, or can be prepared by etherified modified starch or etherified and cross-linked compound modified starch. The biodegradable compound powder-style hemostasis material provided by the invention has simple and convenient preparation process, low cost, quick hemostasis effect and good performance.

The invention provides a preparation method of a hydrogel scaffold for amplifying human iPS (induced pluripotent stem) cells without differentiating. The prepared hydrogel cell scaffold takes synthetic polymer hydrogel as a cell culture scaffold under conditions of not modifying any protein extracted from an animal body or relating to any trophocyte, and is an ideal biological material for safelyculturing human pluripotent stem cells with the advantages of definite chemical structure of synthetic polymer hydrogel, stable physicochemical performance, easiness in regulation and control, no foreign body infection, easiness in sterilization and low price. Therefore, a soft material culture system, which can safely, simply and conveniently amplify human iPS cells without differentiating, can be established.

The invention relates to pure plant lipstick type rouge which comprises the components, by weight, of 100 parts of olive oil, 20-25 parts of beewax, 0.25-0.5 part of wheatgerm oil, 0.25-0.5 part of coconut oil, 0.2-0.4 part of shea butter, 0.05-0.1 part of essential oil, 0.07-0.14 part of honey, 10-15 parts of lithospermum and 0.3-0.4 part of carrot liquid. Plant components are used and have the effects of moistening, moisture preserving, exfoliating scrub, transverse striation removing and lip spot desalting, the beewax, the wheatgerm oil and the essential oil have the effect of natural antibiosis antisepsis, extra corrosion removers do not need to be added, and the pure plant lipstick type rouge is used for preventing and treating the Fordyce disease.

A method for pickling sour vegetable includes such steps as providing Chinese cabbage, cabbage, radish, etc, immersing in boiling water, immersing in cold water, immersing in lactics liquid, loading bag, holding the temp while souring, water washing, sealing in containers, low-temp souring, and water washing. Its advantages are good taste, low content of nitrite.

The invention provides a novel efficient fire and burn injuries plaster agent and its preparation method, it achieves the purpose of the treatment of burns using the action of nitrogen agent storing drug layer(4) prepared by nitrite and acid agent storing drug layer(2) prepared by reductant.Pharmacological experiments confirmed that the new efficient fire and burn injuries plaster agent based nitric oxide in the invention can treat 1 and 2 degree fire and burn injuries and accelerate skin healing.

The invention discloses a multihole titanium-magnesium alloy artificial bone capable of promoting bone growth and a preparation method thereof. The artificial bone is prepared from titanium-magnesiumalloy powder. The titanium-magnesium alloy powder is prepared from the following components (in percentage by weight): 0.3 to 9.5 percent of molybdenum, 1.5 to 6.5 percent of nickel, 2.5 to 14.5 percent of cobalt, 1.5 to 3.5 percent of yttrium, 1.5 to 5.5 percent of niobium, 2 to 3.0 percent of magnesium and the balance of titanium and unavoidable impurities, wherein the total percentage of all the components is 100 percent. Compared with the prior art, the multihole titanium-magnesium alloy artificial bone has the advantages that due to the addition of a molybdenum element, the intensity of the artificial bone is enhanced, and the low-temperature characteristic of the artificial bone is improved; meanwhile, according to an improved formula and an improved process, the density, the elasticity modulus, the compressive yield strength and the fracture toughness of the titanium-magnesium alloy artificial bone are closer to corresponding values of a human bone; furthermore, the artificial bone can achieve a mechanical property matched with a bone tissue by adjusting the porosity, so that a stress shielding phenomenon between the titanium-magnesium alloy artificial bone and the bone tissue is relieved.

The invention provides yeast-expressed coxsackie A6 virus-like particles and an application thereof. Specifically, the method provides a method for preparing the coxsackie A6 virus-like particles. According to the method, through expression of coxsackie A6 virus P1 protein and 3CD protein coding sequences, which are optimized by codon, in yeast cells, VLP (the virus-like particles) can be formed by automatic-assembling, and the VLP is high in expression amount and easy to purify; and the purified VLP is relatively strong in immunogenicity.

The present invention proposes one kind of inactivated vaccine for preventing and treating type-I paramyxovirus disease of pigeon and its preparation process. The inactivated vaccine for preventing and treating type-I paramyxovirus disease of pigeon is prepared through screening out type-I paramyxovirus PA / PMV-I spawn GDP199902 CCTCC V200605 with powerful immunogenicity and high protecting rate against epidemic strain, inoculating un-immunized chick embryo, extracting PA / PMV-I antigen from dead chick embryo fluid, inactivating PA / PMV-I antigen, and adding adjuvant. The vaccine is used for preventing and treating PA / PMV-I disease of pigeon, and is specific, safe and effective.

The invention relates to chalaza protection parts of circumcision anastomats. The chalaza protection parts comprise a chalaza protection part of an upper anastomat and a chalaza protection part of a lower anastomat, wherein the chalaza protection part of the upper anastomat is formed by connecting a left semicircular-ring-shaped part and a right semicircular-ring-shaped part together through a connecting part, and the chalaza protection part of the upper anastomat and the chalaza protection part of the lower anastomat are connected into a whole through a fastening adjusting part; the chalaza protection part is arranged on a circumcision single-cutter or double-cutter of the upper anastomat, and triangular-radian V-shaped bulges of which the chalaza directions are outward, downward or forward are arranged on a cutting surface of the protection part and a cutting surface of a main body on the same horizontal plane; or the triangular-radian V-shaped bulges of which the chalaza directions are outward, downward or forward are arranged on the cutting surface of the protection part and the cutting surface of the main body on different horizontal planes, and are parallel to the lower anastomat. By adopting the chalaza protection parts of the circumcision anastomats, a beautiful appearance after circumcision can be ensured, and the aim of effectively protecting the chalaza can be really achieved, so that the chalaza protection parts of the circumcision anastomats are suitable for performing circumcision on patients of different ages or patients with short chalazae.

The invention belongs to the technical field of plant cultivation. A method for dividing and cultivating Calathea veitchiana comprises the following steps: selecting a plant of which the number of the blades is between 15 and 18, and completely watering pot soil with water one day before dividing; falling the stock plant out of a pot in dividing, removing original soil, dividing the thick growing plant by a knife along the growing direction of underground rhizomes; taking 5 to 6 pieces of blades as an individual plant, applying 1-1.5g / L of chlorothalonil aqueous solution to the wound; dipping the plant in 2-2.5g / L of rooting powder aqueous solution; planting the plant in the pot soil, completely watering the whole pot soil with water; not applying fertilizer in one month, watering the plant by water with pH value of between 5.5 and 6.0, maintaining the humidity to be over 90 percent, and illumination of between 7,000 and 9,000lux; and illuminating the plant for 7 to 8 hours per day, and covering in three weeks after planting.

The invention relates to a cortex ulmis burn ointment for curing burns, which is composed of the following raw materials: frankincense, sanguisorba officinalis, myrrh, red flowers, sinkiang arnebia roots, rhizoma corydalis, dragon's blood, elephant hide, coptis chinensis, golden cypress, musk, rhizoma bletillae, compounds of glaubersalt and liquorice and sesame oil. The cortex ulmis burn ointment has the functions of detoxication, pain relief, infection prevention, ulcer prevention and curement, hemostasis and astringency. Effective rate is 100%, recovery rate is 95%, the cortex ulmis burn ointment has good drug efficacy, skin grafting is not needed, and patients don't have to suffer from pains of skin grafts and have no scars after recovery.

The invention discloses a culture medium for agrocybe cylindracea. The culture medium comprises the following components in parts by weight: 30-50 parts of cottonseed hulls, 80-120 parts of modified straws, 20-30 parts of bran, 35-45 parts of furfural residues, 50-70 parts of cake fertilizer, 15-25 parts of compound fertilizer, 1-2 parts of growth regulator and 0.3-0.5 part of antifungal agent. The compound fertilizer is prepared by mixing monopotassium phosphate, polypeptide urea and calcium superphosphate according to the weight ratio of 1:(0.5-0.7):(3-4). A preparation process of the culture medium for agrocybe cylindracea is as follows: pretreating the straws for 15-25h by using clarified lime water, regulating the pH value to 5.8-6.4, carrying out aerobic fermentation for 16-20d, then, mixing the straws with raw materials including the furfural residues, the cake fertilizer, the growth regulator and the antifungal agent, and carrying out irradiation sterilization by using Co60-gamma rays. Cellulose and lignin are converted into monosaccharide or disaccharide, so that the actual utilization ratio of the culture medium is increased, and the produced culture medium contains abundant extracelluar enzymes and is capable of promoting the fission and differentiation of the agrocybe cylindracea, shortening the growth period, inhibiting pathogenic infection and improving the yieldand quality.

The invention discloses a method for preparing a bovine cortical bone grafting material, comprising the following steps: degreasing and decalcifying a cleaned bovine cortical bone block, immersing the bovine cortical bone block in an inhibitor of a bone morphogenetic protein degrading enzyme, then performing deproteinization, and finally obtaining the bovine cortical bone grafting material by freezing and drying. The preparation method has the advantages of simple steps, wide material source, low cost, low antigenicity of the obtained bone grafting material, strong bone formation inducibility, high biomechanical strength.

The invention discloses a medicinal composition for treating burn and scald. The medicinal composition comprises the following bulk drugs in percentage by weight: 13 percent of garden burnet, 10 percent of rhizoma bletillae, 10 percent of callicarpa undiflora, 27 percent of rhubarb, 15 percent of giant knotweed, 10 percent of barbed skullcap herb and 15 percent of gromwell root, wherein the medicaments are settled and crushed into fine powder and then uniformly mixed to obtain a mixture; the mixture is immersed in sesame oil in a ratio of 1:(6-8) to obtain a second mixture; and the second mixture is sieved to filter off residues and is bottled for later use. The medicinal composition has the advantages of powerful anti-infection, pain relieving and impervious functions, no irritation to a wound surface, capability of promoting repairing and healing of the wound surface of a cut, locally flat healed wound surface, no scar on the healed wound surface of the first, second and third degree burns and scalds, short treatment period, no irritation phenomenon, no toxic or side effect, low treatment cost, convenience in operation, easiness in change of a medical prescription and convenience in nursing. The medicinal composition can be used for reducing and treating hypertrophic scar of deep second degree burn and superficial third degree burn, promoting the healing of the wound surface and is an external pure traditional Chinese medicine for treating the burn and scald without being limit by medical conditions during operation and implementation.

The invention belongs to the technical field of biological engineering, and particularly relates to construction of a gene-deleted attenuated African swine fever virus strain [delta]20 / 40 and application of the gene-deleted attenuated African swine fever virus strain delta[20 / 40] as a vaccine. The functions of an MGF-110-9L gene and an MGF-360-9L gene encoding protein are jointly deleted in the African swine fever parent strain ASFVCN / GS / 2018 by adopting a genetic engineering means, so that the toxicity of the parent strain is reduced, and the attenuated African swine fever candidate vaccine strain with high safety is obtained; and the attenuated African swine fever candidate vaccine strain is completely attenuated after immunizing a pig, the immunized pig is healthy, 100% immune protection can be provided for attacking (100HAD50 dosage) of ASFV CN / GS / 2018 virulent strain, and the attenuated African swine fever candidate vaccine strain can be used as a safe and effective candidate vaccine for preventing and controlling the African swine fever epidemic situation and has great social value.

The invention belongs to the technical field of bioengineering, and particularly relates to an attenuated African swine fever virus strain without twelve genes and application of the attenuated African swine fever virus strain as a vaccine. According to the attenuated African swine fever vaccine strain, G-ACD-00190, MGF 110-9L, G-ACD-00210, MGF 360 (9L, 10L, 11L, 12L, 13L and 14L) and MGF 505 (1R, 2R and 3R) genes are deleted in an ASFV CN / GS 2018 virus in a combined manner, so that the toxicity of a parent strain is reduced, and the attenuated African swine fever vaccine strain is obtained; after the attenuated African swine fever vaccine strain is used for immunizing pigs, the pigs are completely attenuated, the immunized pigs are healthy, viruses cannot be detected in the blood of the pigs after immunization, 100% immune protection can be provided for attack of ASFVCN / GS / 2018 virulent strains, and the attenuated African swine fever vaccine strain can be used as a safe and effective candidate vaccine for preventing and controlling the African swine fever epidemic situation and has great social value.

The invention discloses a trichosanthes tuber seedling culturing technology. The trichosanthes tuber seedling culturing technology comprises the following steps: taking a new trichosanthes tuber which grows for 2 or 3 years, cutting into sections, disinfecting cuts, soaking the cut tubers in a bucket with an aqueous potassium permanganate solution, airing at an indoor ventilated place till the cuts are dry and starts to shrink, dipping the healed tubers into rooting powder; fermenting and composting cottonseed hulls, cleaning river sand, spreading the cottonseed hulls and the river sand into a seedbed according to a certain volume ratio, disinfecting by spraying the aqueous potassium permanganate solution, and pouring enough bottom water after half a day; in late March and early April of each year, covering with a film and arranging a shed for preserving heat to keep a certain temperature, mulching the ground, externally arranging a plastic greenhouse with a shed film, horizontally putting the tubers in step 1 in parallel into matrix prepared in step 2, loosening the shed and uncovering the film after 10 days, keeping the soil matrix moist, removing the shed after another 10 days, and completing seedling culture till buds and root systems are strong. The trichosanthes tuber seedling culturing technology has the benefits that trichosanthes seedling with strong buds and root systems and free of bacterial infection can be obtained within one month.

The present invention relates to dressing for wound, and aims at providing dressing with the sterilizing functions, high elasticity and good air penetration. The dressing is one three-layer structure with non-woven fabric layer of polymer material, high viscosity fiber layer and porous funnel-type curtain coated film layer. Its middle layer has superfine powder of Chinese medicine dittany bark, alum, borneol, etc. for sterilizing and diminishing inflammation. The dressing of the present invention has excellent effects of sterilizing, diminishing inflammation, stopping bleeding and relieving pain, high elasticity of no limiting to the motion of joint, good air penetration to avoid skin ulcer, and no adhesion to skin.

The invention discloses a medical sponge which comprises a chitosan application cushion layer, a water absorption layer and an anti-bacteria surface layer; the chitosan application cushion layer is composed of a chitosan film layer and gelatin microspheres composited into the chitosan film layer and loaded with fibroblast growth factors, and the anti-bacteria surface layer is a modified activatedcarbon fiber layer; the chitosan application cushion layer has the good histocompatibility and degradability, the fibroblast growth factors can be slowly released, and tissue growth and wound healingare promoted; the water absorption layer has the high absorptivity, percolate of a wound can be rapidly absorbed, and wound surface inflammations are reduced; the anti-bacteria surface layer can adsorb peculiar smell of medicine and the wound, the good anti-bacteria effect is achieved, the phenomenon that the wound is affected by bacteria in the external environment can be avoided, and wound healing is further protected. The medical sponge is convenient to use, medicine does not need to be replaced frequently, no stimulation or toxic or side effect is caused to skin, the wound can be protectedagainst infection, and the wound inflammations can be reduced.

A circumcision anastomat comprises an upper anastomat, a lower anastomat and a fastening adjusting component which are connected with one another by connecting devices. The lower circumcision anastomat is in the shape of an irregular ring, a prepuce cutting groove is arranged on the outer wall of the circular lower anastomat, a latex pad is arranged in the prepuce cutting groove, prepuce antislip bumps are arranged at the upper edge of the outer wall of the circular lower anastomat, a prepuce antislip strip is arranged at the lower edge of the outer wall of the circular lower anastomat, a frenulum protecting portion is arranged at one end of an edge notch of the outer wall of the circular lower anastomat, a frenulum positioning bump is arranged on an edge notch, which corresponds to the outer wall of the lower anastomat, of the frenulum protecting portion, and a cutting surface with the frenulum protecting portion and a cutting surface of a main body are not positioned on the same horizontal plane. The circumcision anastomat can be applied to patients with long or short penis frenula under a synergistic effect of the lower anastomat, the upper anastomat, the fastening adjusting device and the connecting devices, suffering of the patients during circumcision can be thoroughly prevented, doctors can operate the circumcision anastomat easily, post-operation infection and side effects are avoided, and the circumcision anastomat is applicable to circumcision in various levels of hospitals.

The invention relates to an externally-used medicament for treating trauma which is prepared from the following medicinal herbs (by weight ratio): sulfamethoxazole 30-40 parts, berberine 5-15 parts, calcined gypsum 15-30 parts, zinc oxide powder 15-20 parts.

The invention discloses a preparation method of a biological amniotic membrane easy to preserve and belongs to the field of biological amniotic membrane preparation. The preparation method comprises the steps that an amniotic membrane undergoes cleaning and enzymolysis, glycerol is added for soaking after filtering, flushing is performed with physiological saline to obtain a coarse biological amniotic membrane, then chitosan and sterile water are taken and mixed, a phosphoric acid solution, tea polyphenol, casein and ammonium persulfate are added, re-mixing and heating are performed, chitin is added to obtain a mixed solution, and then the coarse biological amniotic membrane is socked in the mixed solution, undergoes microwave reaction, flushing and filtration and then is put in a sterile purification room for natural air drying so as to obtain the biological amniotic membrane easy to preserve. Examples prove that the preparation method is simple and convenient and does not need special equipment, and the defects of smaller thickness, poor mechanical strength and easy tear of an existing amniotic membrane material are overcome. In addition, the prepared biological amniotic membrane is free of biological toxicity, has better tissue compatibility, can be preserved at room temperature for a long period of time, is convenient to use and can be produced in a large-scale mode, and the preservation time is prolonged to be 3-5 years.