34 results about "Germ free condition" patented technology

The present invention provides an ultraviolet light toothbrush sanitizing-box for bacteria prevention and toothbrush dehumidification. The ultraviolet light toothbrush sanitizing-box will sterilize the toothbrush with ultraviolet light and dehumidify the toothbrush storage environment, thereby maintaining the toothbrush in a germ-free condition before each use and prolonging the life-span of the toothbrush.

The invention relates to a disposable product package containing a crimped specimen bag. The disposable product package contains a specimen bag and a sterile packaging system and is sold in a germ-free condition and used by a customer, and the sterile packaging system guarantees that the specimen bag is in the germ-free condition; the specimen bag contains a bag mouth which can be opened and folded, and a closed bag body formed by extending from the bag mouth; the specimen bag also comprises a tunnel surrounding the bag mouth and a stay wire inserted into the tunnel, and the specimen bag contains an unfolded state and a crimp state; in the crimp state, the specimen bag is folded into a long and thin shape or is rolled up into a scroll shape; and the specimen bag also comprises a binding wire ring used for fixing the specimen bag to be in the crimp state and preventing the specimen bag from being automatically changed into the unfolded state from the crimp state.

The invention relates to an upper cover of a plant cultivation box. The upper cover comprises a cover body and a breathable film, the cover body is provided with a gas hole, the breathable film is arranged in the gas hole of the cover body and provided with a filter material and at least one supporting material, and the supporting materials are arranged on one side face of the filter material. The filter material is used for filtering gas passing the gas hole so that external microorganisms, bacteria and the like cannot pass the gas hole, the supporting materials arranged on one side face of the filter material are used for enhancing the structural strength of the filter material, the germ-free condition in a box body can be really maintained when the box body of the plant cultivation box is covered by the upper cover, and growth and development of plant tissues are facilitated.

The invention relates to a novel lithotomy position surgery leg bracket. The technical scheme of the novel lithotomy position surgery leg bracket is that, according to the position characteristic of lithotomy position surgery, a traditional scheme that popliteal space of a leg is supported is changed, popliteal space supporting is replaced by shank supporting, and all untoward effects caused by the traditional popliteal space supporting are solved. A boot-shaped design completely according with the three-dimensional physiological curve of a shank can reduce the press on the popliteal space anda gastrocnemius muscle, and avoid the damage on popliteal space plexus and fibular nerves. Cantilever type leg supporting is adopted for adjusting positions needed in surgery at will, the surgery position is controlled by an adjusting handle, and the leg bracket can stay in a desired position at will. When the position is adjusted, no medical care personnel is needed for lifting and moving the leg of a patient, and even during the surgery, the medical care personnel can still easily adjust multiple angles in a germ free condition of the leg. The work intensity of the medical care personnel isreduced, the efficiency and safety of the surgery are improved, and the surgical results are improved.

The invention discloses a method for biological purification of Mongolian gerbils. The method comprises the following steps of: selecting young Mongolian gerbils which are born through cesarean section under a germ-free condition, using ICR lactating mice as foster mother mice of the young Mongolian gerbils to provide breast milk or manually feeding milk to the young Mongolian gerbils, starting to add mouse feed powder containing rabbit milk to the young Mongolian gerbils which are 17-day-old to 20-day-old, keeping the content of the rabbit milk to be 60-70ml per 100g of mouse feed powder, and safely weaning the young Mongolian gerbils from milk after the body weight of each 25-day-old to 30-day-old young Mongolian gerbil is 16g to obtain weaned young Mongolian gerbils; and conducting detection of microorganisms such as mycoplasma and Tyzzer's organisms on mother Mongolian gerbils and the young Mongolian gerbils, putting acceptable weaned young Mongolian gerbils into a barrier system for separate feeding, tracing and detecting the microorganisms such as mycoplasma and Tyzzer's organisms on two generations of Mongolian gerbils, and using acceptable Mongolian gerbils as clean-grade Mongolian gerbils. By using the method, the microorganism grade of the Mongolian gerbils is improved to a clean grade from a conventional grade.

A method for manufacturing potassiumtetroxalate through fermentation of Aspergillus niger includes the steps of separation and purification of Aspergillus niger as well as the liquid fermentation culture of Aspergillus niger. Specifically, each liter of PDA fluid nutrient medium is added with 5-25g of sucrose and the pH value is adjusted to 4.7-6.4; in germ-free condition, the spore inoculum concentration of Aspergillus niger is 1 percent, the spore consistency is 1*10<4>-10<6>cfu/ml, the culture temperature is 30-40 DEG C, and constant-temperature fermentation culture proceeds for 72-100h; mycelia is filtered, the fermentation liquor is concentrated to one twentieth to one fifteenth of the total volume of culture solution; and finally white powered product of potassiumtetroxalate is obtained after separating out crystals, washing by ultrapure water and drying. By combining the separation and purification of Aspergillus niger with the liquid fermentation culture and using potato and sucrose as basic culture substrates which are safe and free of poison, the method realizes the full-energy environment-friendly production of potassiumtetroxalate during the whole process and reduced the production cost greatly.

The invention discloses a grating filter membrane with a sterilization color-change indicating function, aiming at solving the problem that whether the filter membrane is sterilized can not be recognized and further the germ-free condition of the filter membrane can not be confirmed when microorganisms in liquid and air are separated by adopting a microporous membrane and being capable of conveniently counting colonies on the filter membrane. A grating line (2) on the filter membrane (1) in the invention is a water-based grating line. In order to realize the purpose of the invention, sterilizing color ink is printed on the surface of the filter membrane by adopting methods of silk-screen and the like, the ink and the filter membrane can have the same color and can have different colors, the grating line is changed from the original color into a sterilized color in color after being subjected to a sterilization mode suitable for indication ink and forms a remarkable color difference with the color of the filter membrane, therefore, the germ-free condition of the filter membrane can be confirmed and the microorganisms are conveniently counted. The invention can ensure the result of detecting the microorganisms, and can be widely applied to the detection of the microorganisms in liquid and air.

The invention provides disposable detachable medical scissors. The disposable detachable medical scissors are characterized in that a scissoring part and a holding part detachably connected with the scissoring part are included; the scissoring part is provided with two installation arms, the holding part is provided with two handles corresponding to the installation arms, and each handle is provided with an installation unit of the corresponding installation arm. According to the disposable detachable medical scissors, the holding part is made of degradable high molecular materials instead of heavy alloy materials, only the scissoring part is made of lightweight alloy materials, and therefore the manufacturing cost is greatly lowered; in addition, after the disposable detachable medical scissors adopt plastic sucking packaging, not only can sterilization be conveniently performed by using ethylene oxide or a gamma ray, but also the germ-free condition can be conveniently kept for a long time, and the scissors can be quickly taken to use on the emergent condition.

The present invention discloses a six-dimensional sterile meat obtaining method. The six-dimensional sterile meat obtaining method comprises the following steps: (1) sterile site selection; (2) sterile breed selection; (3) sterile breeding; (4) sterile slaughter; 5) sterile cooking; and (6) sterile eating. The provided six-dimensional sterile meat obtaining method controls the whole process of thesite selection of breeding farms, sanitation in the breeding farms, breed selection and breeding of livestock, feeding, slaughter and decomposition, cooking and eating, etc. to control possibility ofcross-contamination pathogens and bacteria carried by meat and a sterile state, achieves a purpose of safe and secure raw meat eating, improves quality and grade of food, and benefits body health ofpeople.

The invention discloses a spraying type edible fungus culture medium sterilizing box. The structure of the sterilizing box includes an outer box, a regulating board, an inner box, a box door, a handleand an observing window; the external of the outer box is provided with the regulating board, the inner side of the outer box is connected to the inner box; and the box door is arranged at the connecting part of the outer box and the inner box. The beneficial effects of the sterilizing box are as follows: interlayer space formed by liquid absorbing splints can be used for accommodating a sterilizing liquid released by a rotary spraying mechanism in the structure and absorbing the sterilizing liquid when the sterilizing liquid hangs on the surfaces of the liquid absorbing splints; and the brought centrifugal force can throw the sterilizing liquid out at a high speed and spraying the sterilizing liquid in the inner box to perform full coverage sterilization, so that equipment can be guaranteed to be at an aseptic state before being used, and a culture medium can be avoided from being polluted by miscellaneous bacteria.

The invention provides an improved method of rearing a bird of specified germ- free status. Specifically, the present invention is directed to a method for increasing the hatchability and viability of surgicaliy derived eggs of germ-free status when obtained from a parent bird. The method comprises housing a bird as a parent bird, determining the position of a premature egg in the reproductive tract and stage of development of the premature egg in terms of shell formation and calcification, surgically removing an egg in its shell from the parent bird prior to transfer of the egg to the cloaca in the parent bird, incubating the egg and hatching the egg to produce a laying bird. The invention also relates to the production of avian eggs of specified germ-free status and uses thereof.

The invention provides a new energy garbage can with a disinfection function, and relates to the technical field of environment-friendly garbage cans, and the problems that the interior of a conventional garbage can is of a closed barrel-shaped structure, bred bacteria overflow and possibly damage the body health of people when the condition is serious, a high-cleanliness disinfection garbage can needs electronic induction, manufacturing cost of the garbage can is relatively high, and the garbage can is a high-frequency vulnerable object, so that energy waste is very liable to be caused can be solved. The new energy garbage can comprises a garbage can body. A supporting frame is vertically, upwards, longitudinally and fixedly installed in the middle of the upper end of the garbage can body. A herringbone shielding plate is fixedly installed at the upper end of the supporting frame. A disinfectant box is vertically installed in the position, in the middle of the supporting frame, of the garbage can body, and the lower end of the disinfectant box is arranged in an inner cavity of the garbage can body. The inner end of a liquid discharge pipe is located at the concave position of a flow guide bottom plate, so that the liquid discharge pipe performs liquid discharging finally in an independent state, the dry and sterile state of garbage is guaranteed, and the environmental sanitation is improved.

The present invention is the amplification reaction of microbe and its metabolite with magnetically processed water containing mineral nutrients. In the same time, the long time aeration treatment makes the un-decomposed organic matter in completely bacteria-free state to maintain stable quality for long term without being affected by the environment and temperature change. The present invention may be used widely in agriculture, water treatment, stockbreeding and green plantation, etc.

The invention discloses a preparation method of L-lysine sulfate and by-products thereof, and belongs to the technical field of lysine production processes. The preparation method comprises the following steps: adjusting the pH value of a fermentation medium to 7.0-7.1 by using 20% NaOH, then continuously heating the medium by using steam to cause microbial death, inoculating lysine producing bacteria in a sterile state, carrying out fermentation at a temperature of 35-40 DEG C, a pH value of 6.8-7.0 and a DO value of 20-30% for 48-60 hours, after the fermentation is finished, putting the mixture of lysine and the substrate into an isoelectric extraction workshop, adjusting the pH value of the fermentation liquid to 5-6 by using sulfuric acid, filtering the treated fermentation liquid by using ceramic membrane equipment, performing triple-effect concentration on the filtered clear liquid, and performing granulation and drying by using a guniting granulation bed to obtain a finished product. According to the preparation method, the environmental protection problem is solved, the production processes are reduced, the process route is simple, the consumption of raw materials and auxiliary materials is low, the cost is low, and the produced lysine content is high.

The invention relates to the technical field of sealing cover cleaning, and discloses a method for keeping a rotary sealing cover head of a PET product sterile. For solving the problem that the sanitation dead angle of the inner wall of a sealing cover head cannot be thoroughly eliminated in the prior art, a nozzle for washing and disinfecting the sealing cover head is additionally arranged around the sealing cover head on a production line, disinfectant is sprayed out of the nozzle, microorganisms hidden in the sealing cover head are killed, and the inner wall of the sealing cover head is kept sterile in the whole process. The method has the beneficial effects that on the basis of cleaning and disinfection of a conventional filling machine, the nozzle for washing and disinfecting the sealing cover head is additionally arranged, the microorganisms hidden in the sealing cover head can be effectively killed in the production process, and the inner wall of the sealing cover head can be kept in a sterile state in the whole process; according to the method, the needed transformation spare part price and the operation cost are both low, and the part transformation cost does not exceed 400 yuan; and the method can ensure that the disinfectant residue in the product meets a standard requirement.

The invention belongs to the technical field of probiotic powder processing, particularly relates to a probiotic powder preparation process, and aims to perform low-temperature pretreatment on probiotic powder. The process comprises the following steps: step 1, taking out a probiotic strain from a liquid nitrogen box, and transferring an isolate into a fermentation tank for fermentation treatment in a sterile state; 2, sampling detection is conducted every 30-35 min, and a culture solution is added; step 3, concentrating the probiotic strain by 20-30 times by using a ceramic membrane filtration technology, and observing the concentration amount of the bacterial liquid at the bottom of the container; step 4, reducing the moisture content in the sub-packaged concentrated probiotic strains through a freeze-drying pre-treatment device, and finally freeze-drying the concentrated probiotic strains into granules through vacuum drying equipment; step 5; grinding the granular probiotic material into powder, sieving with a 300-mesh sieve, and packaging at low temperature; the freeze-drying pretreatment device comprises a supporting frame, and a freeze-drying treatment tank and a plurality of rotating rollers are rotationally connected to the supporting frame and used for supporting the bottom of the freeze-drying treatment tank.

The invention relates to the field of microorganism experiment instruments, in particular to a pipettor suction nozzle box. The box comprises a box body and a box cover, a bearing part is arranged inthe box body, a plurality of insertion holes are formed in the bearing part, insertion hole covers are arranged at the opening positions of the insertion holes, pipe bodies for containing suction nozzles are arranged in the insertion holes, film holes are formed in the insertion hole covers, and the positions of the film holes are covered with air purification films. According to the product, theinsertion hole covers are arranged at the openings of the pipe bodies by adopting a double-layer locking system, so that the insertion hole covers are effectively prevented from being automatically bounced off during high-pressure steam sterilization, and the cover sealing effect is very reliable. each suction nozzle is provided with an insertion hole cover, and each insertion hole cover is provided with a breathable film, so that the effect of high-pressure steam sterilization is guaranteed, air permeability and moisture permeability are achieved, it can be guaranteed that the suction nozzlesto be used are in a reliable sterile state during operation, and test errors caused by pollution and wetting due to the situation are avoided; and the insertion hole covers can be used repeatedly, sothat the manufacturing cost is reduced.

The invention discloses a lssine hydrockloride powder injection in the form of sterilized powder of lssine hydrockoride and prepared by the steps of, loading the lssine hydrockoride raw material into ampoule under germ-free condition, pluging butyl rubber plug, attaching aluminium cap, rolling the cap, sterilizing, lamp checking, and packaging for the finished product. The advantage of the invention is that, the lssine hydrockloride powder injection can be used for intra-vascular infusion, thus increasing the selectivity for the current available clinic medicament forms.