65results about How to "Solve cross-contamination" patented technology

The invention relates to a fully automatic molecular electrophoresis gel imaging analyzer, which comprises a hardware system and a software system. At the same time, the all-in-one machine also adopts double-screen individual display technique and a timing power-off function. The problem of environmental cross contamination prevalent in apparatus of the type is effectively solved by integrating software and hardware systems of a computer and the gel imaging analyzer and by adopting integral design; convenience degree of experiment operation is improved through the double-screen individual display technique; energy waste is avoided by setting a timing switch; operation convenience and analysis accuracy are greatly improved through a special gel tapping device; and operational safety of the system is improved through leakproof design on a leakproof object carrying table.

The invention relates to a micro-scale sampling pump art sphere for transferring microliter liquid as using in medical devices and laboratory automatic devices, which is a gas replacing type and with an auto-removing suction nozzle device and comprises a pump body, a linear motor, a driving guide screw, a piston, a sliding sleeve, a cylinder, a gun end and a suction nozzle removing sleeve, wherein the sliding sleeve, the cylinder and the gun end are connected together one by one, and the suction nozzle removing sleeve is fixed on the pump where is close to the gun end. The one-time suction nozzle of the invention is used as the air replacing type micro-scale sampling pump for transferring liquid medium, which resolves the questions of the requirement of complicated washing pipe and cross contamination, and also can acutely detect height of the liquor and the suction nozzle fitting tightly or not and being caught or not. Compared with the expensive huge-scale liquid working stations abroad, the invention has the superiority in cost and avoids the cross contamination between specimens.

The invention relates to a zinc-manganese flow battery. The battery comprises a battery module, an electrolyte storage tank, a circulating pump and a circulation pipeline, wherein the battery module is formed by connecting a single battery or more than two single batteries in series, the single battery comprises a positive electrode and a negative electrode, the positive electrode and the negative electrode are oppositely arranged, a gap is reserved between the positive electrode and the negative electrode, and an electrolyte is an acidic aqueous solution containing divalent zinc ions and divalent manganese ions. In the battery, solid-liquid phase conversion is adopted during the reaction of the positive electrode and the negative electrode, a diaphragm is not needed, only one electrolyte loop is needed, the problem of cross contamination of the traditional flow battery is solved, and the zinc-manganese flow battery has the characteristics of long cycle lifetime, low cost and simplicity in structure and manufacturing process.

The invention discloses a medical assisted robot for instrument nurses. The medical assisted robot comprises a movable supporting mechanism, a multifunctional storage device, a composite smart mechanical arm, an end effector and an ultrasonic drying and cleaning device, wherein the composite smart mechanical arm is of a structure combining a multi-degree-of-freedom rigid mechanical arm and a flexible mechanical arm; the end effector adopts a composite absorption scheme, and pickup and recycling are designed to be mutually perpendicular and separated, so that cross contamination of instrumentscan be effectively avoided; the multifunctional storage device is provided with corresponding storage boxes according to different types and models of surgical instruments; The medical assisted robotfor the instrument nurses can flexibly move under the cooperative work of a chassis moving module, a chassis damping braking module and a distance measuring module; and the ultrasonic drying and cleaning device can effectively clean and dry the end effector. The medical assisted robot has the advantages of being compact in structure, flexible in control, convenient in use, intelligent in storage and accurate in pickup, and can be widely applied to medical assistance for surgical operations and the like.

The invention discloses a tubular plasma circulating nucleic acid extraction method and a system thereof. The extraction system comprises a sample adding cavity, a pressing mechanism, one or more washing liquid storage cavity, an elution liquid storage cavity and touched liquid leaking mechanisms, wherein the sample adding cavity is capable of containing mixed and cracked samples; an adsorption mechanism is arranged in the sample adding cavity and can be combined with circulating nucleic acid in the mixed and cracked samples; the pressing mechanism is capable of moving down in the sample adding cavity; the washing liquid storage cavity is capable of containing washing buffer liquid; the elution liquid storage cavity is capable of containing elution liquid and is arranged under the washingliquid storage cavity; the touched liquid leaking mechanisms are distributed in set positions combined the sample adding cavity with the washing liquid storage cavity or the elution liquid storage cavity and is used for enabling the washing liquid storage cavity or the elution liquid storage cavity to be communicated with the sample adding cavity when the touched liquid leaking mechanisms are touched by a touch structure of the pressing mechanism. The extraction system is ingenious in structural design, combines reagents with devices and can completely avoid the possibility of cross contamination.

The invention relates to a dispense interface (500, 600) comprising a body (502, 602) comprising at least a first channel structure (504, 608) and a second channel structure (506), wherein each of the at least two channel structures (504, 506, 608) comprises at least a first inlet channel (508, 512, 610) comprising a first inlet opening (516, 614) and a second inlet channel (510, 514, 612) comprising a second inlet opening (518, 522, 616), wherein each of the at least two inlet openings (510, 514, 518, 522, 612, 616) of one channel structure (504, 506, 608) is configured for fluid communication with a respective reservoir (90, 100) of at least two reservoirs (90, 100) and wherein at least one connecting channel (534, 622) configured for a fluid communication between at least one outlet opening (536, 624) and one of the at least two channel structures (504, 06, 608) is provided.

The invention relates to a total-manganese flow battery. The battery comprises a battery module, an electrolyte storage tank, a circulating pump and a circulation pipeline, wherein the battery module is formed by connecting a single battery or more than two single batteries in series, the single battery comprises a positive electrode and a negative electrode, the positive electrode and the negative electrode are oppositely arranged, a gap is reserved between the positive electrode and the negative electrode, an electrolyte is an acidic aqueous solution containing divalent manganese ions, the positive electrode and the negative electrode share the same electrolyte, and the electrolyte is supplied in a circulation flow way by the circulating pump. In the battery, deposition-dissolution reaction is adopted by the reaction of the positive electrode and the negative electrode, a diaphragm is not needed, only one electrolyte loop is needed, the problem of cross contamination of the traditional flow battery is solved, and the total-manganese flow battery has the characteristics of long cycle lifetime, low cost and simplicity in structure and manufacturing process.

The invention relates to a self-sweeping blending machine which comprises a frame and a mixing chamber, wherein a rotating shaft is arranged at the center of the mixing chamber; a rotating driving device is connected with the rotating shaft; a stirring blade is connected with the rotating shaft; the rotating driving device is fixedly connected with a connecting plate; a lifting driving mechanism which is along vertical direction is connected with the connecting plate; two rows of paddles are arranged on the two sides of the rotating shaft along the circumferential direction at 180-degree interval; gaps are arranged between radial external ends of the paddles and the inner wall of the mixing chamber; an aperture, through which the paddles can pass, is arranged on an upper cover of the mixing chamber; when the rotating shaft is lifted under the driving of the lifting driving mechanism, the paddles pass through the aperture; a sensor is arranged above the rotating shaft on the upper part of the mixing chamber; a sensing switch which is matched with the sensor is arranged on the frame. The self-sweeping blending machine can effectively solve the problem of cross contamination of the material samples at present.

The invention discloses an ultrasonic vibration cleaning tank and a cleaning method utilizing the same. The cleaning tank comprises a cleaning tank body and an ultrasonic vibrator. The cleaning tank body is used for accommodating to-be-cleaned needle sets. The ultrasonic vibrator is fixed in an ultrasonic vibrating room, and the side wall of the ultrasonic vibrating room is mounted on a bottom groove of the cleaning tank. The cleaning tank has the advantage of simple structure and good cleaning effect.

The invention discloses a mike nipple medicated bath health care protection which comprise a support, a medical washer and spray-wash device.; the support comprises a floorstand and a side support connected to the floorstand; the medical washer a operation handle connected to the side support , the end of the operation handle is provided with the medicated bath vessel in which a convex body upward; the spray-wash device comprises a nozzle which is set on the convex body, the nozzle is connected to a reservoir through a infusion tube, the reservoir is filled with the soutuin, the solution of the infusion tube is pressure transition liquid when the cow nipple is sterilized, the whole disinfection of cow nipple is completed, the speed is high, the efficiency is high, the time from the cowing complacency to disinfection is shortened, in the condition that the negative pressure doesn't vanish completely, the disinfection can be finished, the end of the nipple can be sterilized, the problem of cross contamination caused by disinfection of existing disinfection cups is solved, the cow from the nipple is squeezed out, the health result of the cow breast is good.

The invention provides a deposition device. In the deposition device, a hollow shell is used as a reaction cavity. The deposition device comprises a supply unit communicating with the reaction cavity,wherein the supply unit comprises a reactant conveying module which is detachably connected to a reaction unit. Atomic layer deposition equipment comprises a rack and the deposition device and can beused for preparing powder surface coating layers. The atomic layer deposition equipment can effectively solve the problems of cross contamination and incomplete ALD (atomic layer deposition) particlecoating layers occurring when different thin film materials are deposited.

The invention provides an aromatic lead-free solder paste to aim at solving the problem that leaded solder paste and lead-free solder paste are difficult to distinguish in use and simultaneously improve the air quality in the environment of work sites; the aromatic lead-free solder paste consists of alloy solder powder and soldering flux paste; the soldering flux paste includes solvent, activating agent, film forming agent, tackifier, wetting agent and thixotropic agent, the soldering flux paste also contains high boiling point alcohol compounds with aromatic odor, and the weight of the high boiling point alcohol compounds with aromatic odor accounts for 0.01-50% of the total weight of the soldering flux paste. The aromatic lead-free solder paste of the invention can improve the performance of soldering flux paste, increase the identity of the product, prevent leaded solder paste and lead-free solder paste from being mixed up and strengthen fragrant stimulation to the sense organs of operators who can be exited when smelling aromatic odor; furthermore, the aromatic lead-free solder paste can create a comfortable environment and the surrounding of a production line can give off faint scent.

Provided are nucleic acid extraction apparatuses and operation methods thereof. The apparatus may include at least one cyclically moveable annular structure, at least one pipetting mechanism, at least one injection mechanism and a driving mechanism. The annular structure may be provided with a plurality of cuvette positions and a plurality of operation positions. The pipetting mechanism and the injection operation may be arranged along the annular structure. The driving mechanism may drive the annular structure to move cyclically.

The invention belongs to the technical field of marine environment investigation, and particularly relates to an in-situ extraction, enrichment and sampling device and an in-situ extraction, enrichment and sampling method applied to organic pollutants in seawater. The in-situ extraction, enrichment and sampling device for organic pollutants in seawater comprises a sample extraction and enrichmentunit, a sample feeding unit, a drainage unit, a pressure balance unit, a sample elution unit, a sample transfer unit and a control circuit board assembly, wherein the sample feeding unit, the drainageunit, the pressure balance unit, the sample elution unit and the sample transfer unit are all connected with the sample extraction and enrichment unit, and all the units complete sample feeding, extraction and enrichment of the organic pollutants in seawater under the control of the control circuit board assembly. According to the device and the method, multiple times of sample feeding are adopted, so that the enrichment multiple of the target pollutants is increased. After each time of sample feeding, nanoparticles are fully contacted and mixed with a seawater sample through stirring, so that the extraction efficiency is improved, and the underwater in-situ extraction, enrichment and sampling of the organic pollutants are realized.

The invention provides a heating device of a micro-fluidic chip. The heating device comprises a heating body which is separated for a predetermined distance from a heating area of themicro-fluidic chip and a focusing device which is used for focusing heat emitted by the heating body to the heating area. On the basis, the invention further provides a heating, temperature detection and optical detection device and method for the micro-fluidic chip and a micro-fluidic chip system. According to the invention, the problems of cross contamination and chip structure damage of the micro-fluidic chip during heating are solved.

The invention relates to the technical field of bacterial gene detection, in particular to primers, shown as sequences 1-6 in the sequence table, for LAMP (loop-mediated isothermal amplification) of a multi-drug resistant gene oqxAB, a detection kit used for detecting the multi-drug resistant gene oqxAB with LAMP and containing the primers shown as the sequences 1-6 in the sequence table, as well as a detection method for detecting the multi-drug resistant gene oqxAB with LAMP. With adoption of the LAMP technology, the specificity is high, the sensitivity is higher than that with a PCR detection method, and the defects of long time, high workload, cross contamination, complicated operation and the like in the prior art are overcome; LAMP is rapid, low in cost and applicable to field rapid detection, and an operation method is simpler.

The invention relates to a method and a device for treating and storing substances such as protein in biological fluid, a multifunctional post-treatment device and a membrane adapter membrane lifting device are arranged along one side edge of a workbench, a filter screen rack recovery table is arranged on the membrane adapter membrane lifting device, a mechanical arm is arranged on the workbench, and the mechanical arm is connected with the membrane adapter membrane lifting device. The mechanical arm can horizontally move on an X axis and a Y axis, a mechanical claw is arranged on the mechanical arm, a pipette and a grabber are arranged at the front end of the mechanical claw, a sample frame is arranged in the middle of the workbench, a scanning device and a suction filtration system are arranged on one side of the sample frame, and a suction filtration device is arranged on the other side of the sample frame. The suction filtration system is used for allowing sample body fluid in a sample test tube to flow into the membrane adapter through rotation, the suction filtration system corresponds to the rotary workbench in position, and a feeding and discharging station, a suction filtration station, a first drying station and a second drying station are sequentially arranged on the upper circumference of the rotary workbench. Meanwhile, multiple steps are operated at the same time, the working efficiency is improved, and the problem of cross contamination is solved.

The invention relates to a simple and environment-friendly tissue RNA extraction device. The device comprises a bottom plate, a protective cover, a grinding mechanism, a cleaning mechanism and a liquid feeding mechanism, the protective cover is arranged on the bottom plate, the grinding mechanism is arranged on one side of the top of the protective cover, the cleaning mechanism is arranged on thelower part of the grinding mechanism and on the bottom plate, and the liquid feeding mechanism is arranged on the other side of the top of the protective cover. The device has the advantages of scientific and reasonable design, simple and convenient structure, simple operation and flexible movement, effectively saves operation time and space, reduces labor cost, electrically adds liquid, accurately adjusts the adding amount of a reagent, reduces the contact frequency of operators and harmful reagents, delivers scientific research personnel from complicated experimental operation, effectively reduces the harm of toxic experimental reagents to human bodies, and ensures the personal safety of experimental operators. The device reduces artificial errors, simultaneously solves the problem of reagent cross pollution caused by repeated liquid addition, carries out the whole operation process in a low-temperature environment, effectively avoids the RNA degradation, and ensures that high-quality RNA is extracted.

The invention relates to the technical field of cuvette cleaning, and particularly relates to a cuvette group cleaning device. The cuvette group cleaning device comprises a machine box, a sewage box,a water purifying box, a cleaning box, a controller, an operation panel and a cleaning mechanism, wherein a groove with a fan-shaped horizontal projection surface is formed in the upper surface of themachine box, and a plurality of through holes are formed in the groove; the sewage box is arranged below the groove, the operation panel is arranged at the upper end of the machine box, and the sewage box, the water purifying box, the cleaning box and the controller are arranged in the machine box; and the cleaning mechanism comprises a plurality of sliding frames, a plurality of sliding blocks,a plurality of hoses, a main pipeline, a plurality of electric control valves, a plurality of nozzles, a water purifying pump and a cleaning pump. According to the cuvette group cleaning device, in the process of cleaning cuvettes, the cuvettes do not need to be moved, the cuvette group cleaning device can be suitable for cleaning most cuvette groups used by analyzers, the universality is high, the cuvettes on the cuvette groups do not need to be taken down during cleaning, the operation is simple and convenient, the cleaning effect is good, and the sewage discharging effect is good.

The invention discloses a non-contact air flotation claw device, and belongs to the technical field of air flotation transportation. The non-contact air flotation claw device comprises a negative pressure shell, a positive pressure shell and an air flotation suction disc adapter, wherein the negative pressure shell is connected with a negative pressure air pipe, a negative pressure air cavity is formed in the negative pressure shell, and the negative pressure air cavity communicates with the negative pressure air pipe; the positive pressure shell is connected with a positive pressure air pipe,a positive pressure air cavity is formed in the positive pressure shell, the positive pressure air cavity communicates with the positive pressure air pipe, a plurality of negative pressure air holesand a plurality of positive pressure air holes are formed in the lower end surface of the positive pressure shell, the positive pressure air holes communicate with the positive pressure air cavity, and the negative pressure air holes communicate with the negative pressure air cavity; or a plurality of negative pressure air holes and positive pressure micropore breathable composite materials are arranged at the lower end surface of the positive pressure shell; and the air flotation suction disc adapter is arranged on the upper end surface of the negative pressure shell. The non-contact air flotation claw device is simple in structure, environment-friendly and clean, and solves the problems of pollution and scratch caused by a glass substrate in the conveying process.

The invention discloses a water quality analysis system and method. The water quality analysis system comprises a plunger pump, a reaction unit, a chemical storage unit and a multi-channel valve, wherein the plunger pump controls chemicals in the chemical storage unit and a to-be-tested water sample to enter the reaction unit through the multi-channel valve, the reaction unit detects and analyzesreacted chemicals and to-be-tested water sample, the chemicals and the to-be-tested water sample are isolated by air and pure water in a feeding process, cross contamination between the chemicals is avoided, and water quality analysis precision is improved.

The invention relates to an intelligent atmosphere corrosion detector. The intelligent atmosphere corrosion detector comprises a chassis, a corrosion sensor, a temperature / humidity sensor, a main controller module, a wireless communication module, a storage module, a corrosion current acquisition module, a power supply module, a solar panel and a storage battery, wherein a corrosion current signalacquired by the corrosion sensor and a temperature / humidity signal acquired by the temperature / humidity sensor are transmitted to the storage module; and the solar panel and the storage battery supply DC power to various modules in the intelligent atmosphere corrosion detector by virtue of the power supply module, the main controller module is separately connected with the storage module and thewireless communication module and calculates the signal acquired by the sensor to obtain an corrosion amount of an anode material of the corrosion sensor at the moment, and the corrosion amount is stored and uploaded to a background main machine so as to determine the local atmosphere corrosion grade.

The invention discloses a gas interval-type droplet evaporation-resistant micro fluidic chip apparatus. The micro fluidic chip apparatus comprises a control probe; a liquid drop plate used for bearing the micro liquid drop; an evaporation-resistant cover plate with an enclosed hood covered on a liquid drop bearing surface of the liquid drop plate, wherein a through hole structure used for avoiding a control probe when the liquid drop is generated is arranged on the position of the evaporation-resistant cover plate facing to a liquid drop zone; an enclosed space is formed between the evaporation-resistant cover plate and the liquid drop plate, wherein the enclosed space is filled with gas; after the micro liquid drop is generated, an isolation gap is generated between an evaporation-resistant phase and the micro liquid drop; and the evaporation-resistant phase is sealed in the through hole structure or the end face of the through hole structure. The evaporation-resistant phase does not directly contact with the micro liquid drop, by using a method for using gas to space the evaporation-resistant phase and the micro liquid drop in a formed local enclosed space, the cross contamination problem between the micro liquid drop and the evaporation-resistant phase as well as the micro liquid drop and the micro liquid drop can be completely avoided, and the evaporation-resistant and interval problems of the micro liquid drop can be solved.

The invention discloses an efficient pollution-free casting melt homogenous refinement treatment device and method and belongs to the technical field of metal material heat processing. The device is composed of a wire feeding / returning mechanism, an additive wire material or bar material, a disturbance driving mechanism, a heater, a wire material or bar material end head and a melt containing cavity. The additive wire material or bar material is located on the center line of the melt containing cavity. The disturbance driving mechanism is located between the wire feeding / returning mechanism and the wire material or bar material end head. The heater is located between the disturbance driving mechanism and a melt liquid level. The wire material or bar material end head is quantitatively immersed below the melt liquid level. Homogenous refinement treatment is conducted on casting melt through the device, and two melt processing processes, namely additive adding conducted in real time and stirring, are combined into one ingeniously, so that the problem that a stirrer and the melt are interactively polluted is solved; and meanwhile, adding speed of additives is greatly increased. The efficient pollution-free casting melt homogenous refinement treatment device and method have the beneficial effects that self-melting is achieved; zero pollution is achieved; and cleaning is not needed.

The freeze dried oldenlandia powder for injection consists of oldenlandia extract as main material 20-140 weight portions, supplementary material including mannitol 80-200 weight portions, Tween-80 20-100 weight portions and sodium bisulfite 1-6 weight portions, and proper amount of water for injection. The preparation process includes mixing the materials in the weight proportion via stirring todissolve, adding active carbon for injection in 0.1-1 wt%, regulating pH to 6.0-7.0, filtering with 0.4 and 0.22 micron microporous filtering membrane, packing, and freeze drying at 5-10 Pa inside the freeze drying case. The freeze dried oldenlandia powder for injection is used in treating various kinds of inflammation, post-operational infection, etc. as well as the assisting treatment of cancer.

The invention provides a consumable for extracting bioactive substances, and an automation device and method. The consumable comprises a sample reaction component and a plurality of tubular componentshermetically preloaded with reagents, the sample reaction component comprises a sealed chamber in which various reactions occur, a first hole for injecting a sample, a plurality of second holes for receiving the tubular components, a third hole for discharging waste liquid and a fourth hole for collecting the bioactive substances, the first hole, the second holes, the third hole and the fourth hole all communicate with the sealed chamber and are all sealed, one end of each of the plurality of tubular components is provided with a piston that is hermetically jointed with an inner wall of the tubular component and can slide therein, the other end is provided with a reagent outlet, and at least one of the preloaded reagents in the plurality of tubular components contain magnetic particles therein. When the consumable and the device provided by the invention are used for extracting the bioactive substances, the even mixing of the liquid is achieved by rotating and oscillating the sealed chamber containing the liquid, thereby avoiding the splashing of the liquid and the formation of aerosol, and eliminating the possibility of cross contamination.

The invention discloses a multi-barrel rocking and impacting washing device and belongs to the technical field of washing. The problems that in the prior art, water consumed for washing is large in amount, and cleaning dead corners exist in washed clothes are solved, and more importantly, the problem that in large-scale washing, the clothes cannot be separately washed, namely, cross contamination of the clothes is generated is solved. Meanwhile, a multi-barrel impacting washing method is utilized for washing the clothes more deeply. The multi-barrel rocking and impacting washing device mainly comprises a big frame, a power device, a converting mechanism, a combined washing device and the like, and washing barrels rock back and forth in a forcible mode to make the washed clothes impact back and forth and clean the washed clothes thoroughly. Through rocking washing of the multiple barrels, the clothes are separately loaded into the washing barrels to be treated, different types of clothes can be washed separately, and personal clothes are washed in a single barrel. The problem that in large-scale washing, the clothes cannot be separately washed is solved, washing and dehydrating are integrated, at each time of multi-barrel rocking and impacting washing, the barrels can work at the same time, and washing efficiency is improved.

The invention relates to a cleaning and clean keeping device for a human body electron detection mirror and an application method. The cleaning and clean keeping device specifically at least comprisesan equipment body, an infection preventing cylinder and a sterilization device. The infection preventing cylinder is specially used by special people. The sterilization device is arranged at the bottom of the equipment body. The infection preventing cylinder is assembled in the space in the infection preventing equipment body. The infection preventing cylinder is arranged on the bottom end face of the sterilization device. The shape of the part of the contact face of the upper end face of the sterilization device and the bottom of the infection preventing cylinder is a protruding block in anygeometrical shape. The contact part of the bottom of the infection preventing cylinder and the upper end face of the sterilization device is a groove with a corresponding shape. The outer end face ofthe base of the infection preventing cylinder and the upper end face of the bottom end face of the sterilization device are arranged in a convex-concave sleeving manner so that the infection preventing cylinder specially used by special people can be conveniently sleeved and replaced. According to the cleaning and clean keeping device for the human body electron detection mirror and the application method, the problem of repeated multi-time contact with a contaminated electron mirror and cross infection does not exist, and the cleaning and clean keeping device is high in practicability and has wide purposes particularly in the fields of medical treatment, hospitals and the like.