55results about How to "Avoid repeated use" patented technology

Provided is a disposable endoscope that enables simple treatment by capturing an image inside a body as a moving picture or photo, and in particular, that enables replacement of a probe portion inserted into the body and that preemptively prevents infection in patients due to repeated usage. The disposable endoscope includes: a main body that is connected to a monitor, and in front of which a light emitting portion and a light receiving portion are arranged in parallel; a light emitting fiber that guides light from the light emitting portion toward an object to be examined; a light receiving fiber that guides light reflected from the object to be examined toward the light receiving portion; and a light adjustment unit that is placed within the protective tube that is adjacent to ends of the light emitting fiber and the light receiving fiber and that adjusts a position of light toward the object to be examined or light reflected from the object to be examined, wherein the light receiving fiber guides light that is reflected from the object to be examined through the light adjustment unit toward the light receiving portion. A probe portion inserted into a body of a patient or a user is used only once so that cross-contamination caused by repeated usage can be prevented in advance. A structure of the disposable endoscope is simple so that costs can be reduced due to reduction in a unit cost of production. A portion in which photographing of a moving picture or photo is substantially performed can be precisely controlled so that a precise diagnosis can be carried out. Photographing of a moving picture or photo with high resolution can be performed using a plurality of mirrors and lenses so that the quality of a patient's treatment or therapy can be improved.

The invention discloses a manufacturing method for a hard micro-fluid chip. The manufacturing method comprises the following steps: preparing an upper chip and chemically bonding and packaging the upper chip under a semi-cured state with a substrate, thereby acquiring the hard micro-fluid chip. The upper chip can be prepared from epoxy resin or amino resin; when the upper chip is prepared, the heating curing temperature is 45-85 DEG C and the time is 15 minutes to 8 hours; a thermal polymerized epoxy resin material is used after the two materials of prepolymer and curing agent are mixed, the viscosity thereof after mixing is low (approximate to mineral oil viscosity), the rolling printing for a tiny structure at micron scale and even nanometer scale is convenient and the rolling precision is high; the mixture can be solidified within 40min under the temperature of 80 DEG C, the preparation time of the micro-fluid chip is shortened, the period is short, the consumption of a reagent is less and the batch production is convenient; the hard micro-fluid chip can be flexibly packaged and combined with various substrates; the packaging is independent of external high temperature and high pressure environments; and the packaging strength is high and the speed is high.

The invention relates to the field of optics, and provides an optical storage anti-fake element. The optical storage anti-fake element at least comprises a pattern layer, the pattern layer is provided with azo polymers, the azo polymers at least comprises one kind of azobenzene chromophore, the upper surface of the pattern layer is provided with a continuous or discontinuous concave-convex structure, and optical information which is erasable, capable of being read, written and changed, and capable of being read and identified by machines is written in the concave-convex structure. The optical storage anti-fake element has high anti-fake reliability.

The invention discloses an intelligent indoor cleaning device with air purification and disinfection functions. The device comprises a device body, a cleaning system, a mopping system, a fumigation system, a diffusion system, an intelligent controller and a charging battery. The device body is provided with a roller on the bottom surface and an ultrasonic sensor in the front portion. The cleaningsystem includes side brushes, a cleaning brush, a dust suction opening, a dust collector and a dust box. The mopping system includes a mopping rod and a mopping mechanism. The fumigation system includes a medicine liquid cartridge for accommodating a sterilizing liquid, an atomizer, and an atomizing nozzle. The diffusion system includes a fan, ventilation openings and ventilation pipes. The intelligent controller includes a control terminal and a motor connected to the control terminal, the control terminal is connected to the ultrasonic sensor, and the motor drives the motions of the roller,a brush rod, the cleaning brush, the dust collector, the mopping rod, a guide roller, a rotating shaft, the atomizer and the fan respectively. The charging battery provides power for the intelligent controller. The device achieves an integrated set of ground cleaning and sterilization, not only meets the family's cleaning requirements, but also achieves the purpose of purifying air, and ensures the health and safety of a family's living environment.

The invention discloses a polarized laser-acupuncture and moxibustion needle, which is composed of a shell, an inner cylinder, a cylinder-lens component and a suction cup. The cylinder-lens component is driven by rotating the shell to move up and down in order to change the space of the convex-concave lens, so that the incidence depth of focus can be controlled. At the same time, a phase-modulation component of the cylinder-lens component, by carrying out intensity modelation and a plurality of polarization modulation to the laser emitted by collimator, combining the position where the suction cup is fixed has the polarized laser irradiated into the acupuncture point of the human body. The polarized laser has the advantages of small scattering loss and strong penetration ability. Meanwhile, as the skin is not contacted by the laser needle, no physical damage can be caused to the skin tissue. In addition, as only the suction cup contacts with the skin directly, the cleaning and sterilization become easy, so that the cross infection can be avoided and the needle can be used repeatedly. Thereby, the invention is a safe medical device with highly curative effect.

The invention provides a method for extracting purified Tth DNA polymerases. The method comprises the following steps: taking engineering bacteria of Tth DNA polymerases for activation, and adding IPTG for inducible expression; adding DTT and tween-20 after the engineering bacteria are treated with lysozyme at room temperature, treating for a period of time on ice and then centrifuging to obtain crude protein; slowing adding silicon dioxide particles in the crude protein, stirring in a magnetic stirring apparatus, centrifuging to remove precipitates; allowing supernatant to flow through an Ni<2+>-chelated Ni-NTA column after the supernatant is supplemented with NaCl, then washing sequentially with washing buffer solutions which have 5 times of bed volume, and at last, eluting the target protein with an eluent, and receiving the eluent containing the target protein; desalting to obtain the purified Tth DNA polymerases; adding glycerol in the obtained purified Tth DNA polymerases, so that the volume fraction is 50%, and saving at -20 DEG C. The method is simple, small in enzyme activity loss, and high in purity and recovery capacity of the recovered protein.

The invention relates to the field of medical apparatus and instruments and discloses a self-destruction type filtering injector. The self-destruction type filtering injector is characterized in that: a needle cylinder is in an irregular shape and comprises a front part, a back part and a connection surface; the internal diameter of the front part is more than the internal diameter of the back part; a filtering device is arranged at the front top part of the needle cylinder; a resilience sheet is connected with the back of the filtering device; and a piston is in a self-destruction structure and is connected with a push rod. When liquid is injected by the self-destruction type filtering injector, the push rod is pulled so that the filtering device is moved backwards and the liquid enters due to a negative pressure; by stopping pulling the push rod, the filtering device is returned back through the resilient sheet; and positive pressure is formed by pushing the pull rod so that the liquid is discharged through the filtering device. After the liquid is discharged, the piston enters into a 'clamping position' so that the piston is separated and destructed by itself by pulling the push rod back. According to the self-destruction type filtering injector disclosed by the invention, the damage to the human body caused by insoluble particles is avoided or reduced by filtering the insoluble particles in the liquid, and the self-destruction type filtering injector is destructed by itself after being used, thereby preventing the injector from being repeatedly used and avoiding the transmission of hematogenous diseases.

The invention relates to the technical field of medical instruments, in particular to a medical instrument cleaning device capable of preventing aerogel infection. The medical instrument cleaning device capable of preventing the aerogel infection comprises a table body, a cover door is arranged on one side of a cover body, a high-pressure water gun is further arranged on the cover body, the cover body is arranged at the top end of the table body, at least two openings are formed in the front side of the cover body, gloves are arranged on the openings, a ventilation pipe is further arranged on a top plate of the cover body and is connected with air draft equipment, and an ultraviolet lamp sterilization device is further arranged in the cover body and is used for irradiating the interior of the cover body. According to the medical instrument cleaning device, the cleaning effect of instrument cleaning is improved, in addition, air in the cover body is sterilized and disinfected, the content of pollutants and germs in pumped air is decreased, and therefore the risk of outdoor pollution and infection is reduced.

The invention discloses a mascara brush and relates to the field of cosmetic tools. The mascara brush comprises a bottle, an end cover, a mascara brush rod and a brush body, wherein the end cover covers an opening of the bottle, the mascara brush rod is fixed to the end cover, and the brush body is fixed to one end of the mascara brush rod; the brush body comprises a brush head and a plurality ofbrush bristles fixed to the outer side of the brush head, a storage cavity is formed in the brush head, and the brush bristles are hollow and are provided with suction holes for being communicated with the storage cavity. The mascara brush rod is of a hollow structure and is communicated with the storage cavity, a suction driving piece is inserted into the end, away from the brush body, of the mascara brush rod, and the suction driving piece and the mascara brush rod form a piston device. According to the provided mascara brush, a user does not need to repeatedly take mascara for use, convenience is provided for the user to control the usage amount of the mascara, and therefore the make-up operation convenience for the user can be greatly improved. Moreover, the mascara brush can indirectly ensure the make-up effect of the user.

The invention provides a method for extracting and purifying an M-MLV reverse transcriptase. The method comprises the steps of: activation and expression of engineering bacterium: activating M-MLV reverse transcriptase engineering bacteria, and adding IPTG for induced expression to obtain expressed engineering bacteria; treating the bacteria with lysozyme at room temperature, adding DTT and Twain-20, treating on ice for a period of time, and centrifuging to obtain a crude protein; slowly adding silica particles into the crude protein, stirring by a magnetic mixer, and centrifuging to remove sediment and obtain a supernatant; transferring the supernatant water to a water bath preheated to 60 DEG C, incubating, centrifuging, and removing precipitate to obtain the supernatant; passing the supernatant through a Ni-NTA column with Ni<2+> chelated, then desalinating to obtain purified M-MLV reverse transcriptase; and preserving the obtained M-MLV reverse transcriptase by adding glycerol to reach the volume fraction of 50% at -20 DEG. The invention has the advanategs of small enzyme activity loss, and high purity, high activity and high recovery amount of recovered protein.

The present invention provides a jet-frying cooking method. The cooking method comprises the following steps: 1, pickling foods to be cooked for 2 hours or more; 2, placing the pickled foods on a support part of a below cooking cavity, and conducting cooking, wherein the cooking cavity comprises a top plate with an upper heater, a bottom plate with a lower heater, and a back wall plate with a convection fan, and jets are arranged in the cooking cavity, and heated oil is jetted to the foods to be cooked on the support part through the jets so as to process the foods; and 3, adding seasonings tothe cooking foods in a cooking process, and keeping cooking for 10-20 minutes. According to the cooking method, when the foods are fried and processed, the amount of edible oil can be controlled without causing any waste. The frying cooking method also avoids the drawbacks of repeatedly heating edible oil in traditional frying cooking methods, reduces the generation of harmful substances, and manufactures healthier foods.

The invention relates to a synthesis method of Daclatasvir. The method comprises the following steps: step 1, performing a bromination reaction on 4.4-diacetyl biphenyl which serves as a raw material so as to obtain an intermediate 1; step 2, performing a substitution reaction on the intermediate 1 so as to obtain an intermediate 2; step 3, performing a cyclization reaction on the intermediate 2 so as to finally obtain the Daclatasvir. Compared with reported synthesis routes, a synthesis route of the method has the following advantages that the route is short, and the yield is high; general means such as suction filtration, extraction and concentration are adopted for aftertreatment, and aftertreatment is simple and convenient; severe-pollution and high-toxicity reagents such as bromine are avoided, and a process of repeatedly using an acetic acid washing reaction system is avoided.

The method involves encrypting an identification code (1) of an immobilization lock using a private key (10) to obtain an encrypted identification code (20) that characterizes a predefined state of the lock. The encrypted identification code of the lock is decrypted to generate an identification code (5) with a public key. The predefined state of the lock is recognized in case of coincidence between the codes (1, 5). Independent claims are also included for the following: (A) an encrypting device to install an immobilization lock of a device (B) a device to recognize a predefined state of an immobilization lock.

The invention discloses a hammer for percussion, which includes a hammer head and a hammer shaft. One end of the hammer head is provided with a rubber head, and the other end of the hammer head is provided with several rubber needles. The hammer shaft and the hammer head are fixedly connected. A connecting rod is provided, and the connecting rod is fixedly connected with the hammer rod. Metal pins can be plugged and connected on the rubber pillow. The connection position between the connecting rod and the hammer rod is provided with a positioning knob, which is threadedly connected between the positioning knob and the connecting rod. The tail end is provided with a detection pin, and the detection pin and the connecting rod are integrally formed during manufacture. The inventor has the advantages of simple structure, convenient use and reduced work complexity.

A special medical device for blood drawing comprises a treatment towel containing cavity, a treatment towel storage cavity, a tourniquet containing cavity, a first rotatable drum, a second rotatable drum and a rocking handle. The tourniquet containing cavity is formed between the treatment towel containing cavity and the treatment towel storage cavity, and a blood drawing pillow panel is arranged on the outer wall of the tourniquet containing cavity; the first rotatable drum is arranged in the treatment towel containing cavity, and the second rotatable drum is arranged in the treatment towel storage cavity; the rocking handle penetrates through the wall of the treatment towel storage cavity to be connected with one end of the second rotatable drum and can drive the second rotatable drum to rotate in the treatment towel storage cavity; the first rotatable drum is sleeved with reel-shaped treatment towels, and the treatment towels are fixed to the second rotatable drum through the blood drawing pillow panel; tourniquets are contained in the tourniquet containing cavity. The special medical device for blood drawing has the advantages that the treatment towels are continuously and rapidly supplied, so that each patient has one towel in the blood drawing process, and cross infection is avoided.

The invention discloses a cooking method of deep-fried twisted dough sticks, and belongs to the technical field of food processing. The cooking method comprises the following steps of firstly, heatingand steaming the made materials of the deep-fried twisted dough sticks, and then spraying high-pressure hot oil fog which is formed after heating, pressurizing and atomizing onto the steamed materials of the deep-fried twisted dough sticks; or firstly, spraying the high-pressure hot oil fog which is formed after the heating, the pressurizing and the atomizing onto the materials of the deep-friedtwisted dough sticks, and then heating and steaming the materials of the deep-fried twisted dough sticks, onto which the high-pressure hot oil fog is spayed. The invention further discloses cooking equipment of the deep-fried twisted dough sticks. The shortening equipment comprises a steam chamber, an oil spraying chamber, a deep-fried twisted dough stick material conveying device and a high-pressure hot oil fog spraying device, wherein the deep-fried twisted dough stick material conveying device penetrates through the oil spraying chamber from the steam chamber, or penetrates through the steam chamber from the oil spraying chamber. Through the adoption of the cooking method disclosed by the invention, original flavor of the deep-fried twisted dough sticks is maintained, and the danger ofrepeated deep-frying is also avoid, so that health is facilitated, consumption of edible oil can be saved, the making cost is reduced, and the condition that after the oil is deteriorated, waste is caused, can be avoided.

The invention relates to a method for realizing irreversible pressure induced SP3 hybridization increase of graphene based on transition metal catalysis. The method mainly comprises the following steps: preparation of transition metal / Gr, cleaning a patterned substrate, assembling the transition metal substrate / Gr and the patterned substrate, performing pressurizing and unloading, and representing Gr sp3 hybridization increase. Compared with an existing preparation method, by utilizing the patterned substrate with the pressure head pattern as a pressure applying device and combining the catalytic action of the transition metal substrate, the method can realize quick, large-area, uniform, low-cost and single-layer Gr inreversible pressesure induced sp3 hybridization increase.

A veterinary drug antibiotic residue detection device comprises a main body box, a containing space is arranged in the main body box, and a strip-shaped opening is formed at the upper portion of the main body box; a sample placer is installed in the containing space and extends out of the opening, a fixing hole is formed in the sample placer, and a test tube containing a detection sample is placed in the fixing hole. A cover is mounted above the sample placer, is hinged to the edge of the sample placer and is fixed to the upper end of the sample placer through a fixing buckle, a groove corresponding to the fixing hole is formed in the cover, and after the sample placer is covered by the cover, the groove presses at the upper end of the test tube to prevent the test tube from shaking, and a base is connected in the bottom surface of the sample placer. According to the detection device designed by the invention, after a sample is cut into a solution, oscillation, centrifugation, concentration and other treatments are carried out, the detection sample can be rapidly prepared and detected through the device, the repeated use of multiple instruments is avoided, the operation process is simplified, and the working efficiency is greatly improved.

The invention relates to a method for preparing a graphene nanonet by using patterned substrate imprinting. The method mainly comprises the steps of substrate / Gr preparation, patterned substrate cleaning, substrate / Gr and patterned substrate assembling, imprinting, demolding and GNM characterization. Compared with the existing GNM preparation method, the preparation method has the advantages that the Gr is penetrated by convex patterns in a patterned substrate in the imprinting process, and rapid, large-area, uniform, low-cost, high-porosity and low-defect GNM preparation can be realized. According to the selection of the patterned substrate, the preparation of GNMs with various patterns and sizes can be realized. In addition, the method adopted by the invention is high in universality, and can be migrated to preparation of nanonets of other two-dimensional materials except Gr, such as MoS2 and BN.

The invention discloses a manufacturing method for a hard micro-fluid chip. The manufacturing method comprises the following steps: preparing an upper chip and chemically bonding and packaging the upper chip under a semi-cured state with a substrate, thereby acquiring the hard micro-fluid chip. The upper chip can be prepared from epoxy resin or amino resin; when the upper chip is prepared, the heating curing temperature is 45-85 DEG C and the time is 15 minutes to 8 hours; a thermal polymerized epoxy resin material is used after the two materials of prepolymer and curing agent are mixed, the viscosity thereof after mixing is low (approximate to mineral oil viscosity), the rolling printing for a tiny structure at micron scale and even nanometer scale is convenient and the rolling precision is high; the mixture can be solidified within 40min under the temperature of 80 DEG C, the preparation time of the micro-fluid chip is shortened, the period is short, the consumption of a reagent is less and the batch production is convenient; the hard micro-fluid chip can be flexibly packaged and combined with various substrates; the packaging is independent of external high temperature and high pressure environments; and the packaging strength is high and the speed is high.