31results about How to "Prevent cross-contamination" patented technology

A protective sheet loader may comprise a first roller, a second roller, a sheet of material spanning between the first and second rollers, and a loading mechanism. A portion of the sheet of material may be loaded into the crimping chamber of an apparatus for reducing the size of a medical device. A medical device may be placed within the crimping chamber such that the sheet of material forms a barrier between the walls of the crimping chamber and the medical device and prevents cross-contamination between the medical device and the crimping device. After a crimping step is completed, the medical device and the contaminated portion of the sheet of material may be removed from the crimping chamber, and a clean portion of the sheet of material may be loaded into the crimping chamber.

A method and apparatus are provided for administering micro-ingredient feed additives to animal feed rations. The apparatus may be referred to as a system which includes a number of discrete components which cooperate together to ultimately deliver micro-ingredients to a desired location, such as a feed mixer containing a feed ration. Structure is provided for storing, measuring, dispensing, and pneumatically conveying the micro-ingredients. Measuring of the micro-ingredients may be achieved by loss in weight, gain in weight, or volumetric metering methods. Pneumatic transport may be achieved either by a single transport line, or a plurality of transport lines. The system is operated by a control unit which controls components of the system to achieve delivery of specified amounts and types of micro-ingredients to the feed ration.

An insulated cooler with two (2) separate independent storage compartments and lids allowing for compartmentalized transportation and storage of items is herein disclosed. The separate compartments eliminate possible cross-contamination as well as provide different thermal conditioning of the contents. The compartments are completely independent of each other having an interior divider wall extending completely through the body of the cooler and continuing into a lid area, thereby sealing independent compartments. Additionally, each compartment is also provided with a draining means.

An endoscope apparatus includes a head portion for capturing images, a flexible connecting member made of optical fibers, and a body. The connecting member is used to transmit image data and control signals. A lens is provided in the head portion and adjustable to obtain sharp and clear images. The images are converted into image files and transmitted to an external data processor for data analysis. The optical fibers are flexible, such that the connecting member can be rolled and received in the body when it is not in use. A carrying member is provided on the body to allow a user to conveniently carry the endoscope apparatus. A disposable cover is used to cover the head portion and part of the connecting member that are to be in contact with an internal body cavity of a human, and a clamping member is provided to fix the cover in place.

A single-use, delivery vehicle for the treatment of warts, consisting of a solution of cantharidin, acetone, and flexible collodion packaged in a crushable ampoule with an absorbent, applicator tip. A method of delivering wart-removing compositions to the skin, consisting of the steps of crushing an ampoule containing the wart-removing composition and pressing the absorbent tip against the wart.

Substrates and arrays that can be used for biological analysis with particle beam instruments are provided. In one embodiment, a substrate for an array is constructed and arranged to be used for imaging samples with a particle beam instrument such as a transmission electron microscope. The substrate can include one or more ligands (e.g., nucleic acids, polypeptides, oligosaccharides, and synthetic polymers) which may form an array. Corresponding changes in labeling chemistry can allow for ligands, binding partners and other relevant materials to be identifiable, quantitatable, and even sequenceable via modified forms of electron microscopy. In certain embodiments, the array dimensions are on the order of nanometers per functional region rather than micrometers as in certain conventional arrays. With these dimensions, smaller amounts of sample material can be used and more accurate genetic analyses performed. These smaller substrate dimensions may also give rise to dramatically reduced production costs, amongst other advantages. The transparency of the substrate, due to thinness, material type and other factors, may provide a suitable contrast ratio of the labeled molecules against the substrate that result in higher quality readings and lower cost analysis than some conventional techniques.

A device is provided to separate magnetic or magnetizable particles from a liquid by using a magnetic field. The device includes two limbs made of a soft-magnetic material. An air gap is provided between be two poles of the limbs. The air gap can receive one or more liquid containers. A head piece is arranged in a fixed or detachable manner on one of the two poles. One or more magnetizable bars are disposed in a fixed or movable manner on the head piece, in the vertical direction. One or more permanent magnets are arranged in a movable manner on at least one point of the device, such that a magnetic field can be produced between the two poles and the magnetic field can be activated or deactivated by moving the magnet(s). The region of the device where the movable magnet(s) are arranged is at least partially surrounded by a material that screens the magnetic field.

A multi-well plate (1) has an upper part (2) with a multiplicity of wells (3), a lower part (4) with a multiplicity of wells (5) that communicate with the wells (3) of the upper part (2), and at least one filter medium (6) that can be fixed between the upper and lower parts (2, 4). Sides (8, 9) of the upper and lower parts (2, 4), facing toward the filter medium (6), have seals (7a, 7b) extending around the wells. The filter medium (6) can be fixed along the upper and lower sides in each case by pairs of the seals (7b) of the upper part (2) and the seals (7a) of the lower part (4). The multi-well plate prevents cross-contamination between adjacent wells due to radial cross-diffusion of analytes. A method for characterization of filter media using the multi-well plate (1) also is provided.

The invention discloses automatic nucleic acid sampling and detecting equipment. The equipment comprises a detection cabin, and a sampling device, a detection device and a control system which are arranged in the detection cabin, wherein the detection cabin comprises a cabin body and a solar power generation system, and an entrance is formed in one side of the cabin body and provided with an intelligent door for opening or closing the entrance; the sampling device comprises a jaw bracket, a multi-degree-of-freedom mechanical arm and an image collector; and the detection device comprises a test tube conveying belt, a sorting mechanical arm, a constant-temperature box, a medicine injector and a color recognizer, wherein the sorting mechanical arm sorts nucleic acid test tubes into the constant-temperature box and sorts the nucleic acid test tubes to the position below the color recognizer for color recognition, and the color recognizer transmits detection information to the control system. The whole nucleic acid detection process does not need the operation of nurses, and the operations from nucleic acid detection, to appointment auditing, automatic sampling of pharyngeal specimens and finally nucleic acid detection result sending, are completed by corresponding devices, so that cross infection during manual detection is avoided.

The invention discloses fiber cloth with color protection and adsorption functions as well as a preparation method and application thereof. The preparation method comprises: weighing a certain amount of water-soluble high molecular polymer and dissolving into de-ionized water to obtain a high molecular polymer water solution; adding a pH (Potential of Hydrogen) regulator, a surfactant and an auxiliary agent into the high molecular polymer water solution; stirring until the components are completely dissolved; putting viscose fibers, polyester fibers and functional fibers into a water solution after stirring and dissolving; reacting at 50 DEG C to 80 DEG C for 15 minutes to 60 minutes; carrying out filtering and drying treatment on the reacted solution to obtain cross-color-proof fibers; laying the dried cross-color-proof fibers to form a net; furthermore, fixing the net into cloth; carrying out hot pressing operation to form the fiber cloth with the color protection and adsorption functions. The fiber cloth prepared by the preparation method provided by the invention can strongly adsorb an active dye, dust scale and mites in a water solution; a dark color caused by the fact that colorful ions and stains are mixed is effectively prevented, and the color of clothes keeps more bright and lasting.

A closed cover for intravenous therapy equipment ports', used for the prevention of cross contamination, made by the collection of airborne particles that collect on the surface openings of rubber ports. Ports are direct openings on Intravenous therapy equipments that supply a direct access to patients' circulatory system. Keeping intravenous therapy equipments' rubber ports surface covered when not in use, reduces the risk of cross contamination by foreign particles which carries microorganisms that cause disease.

An automatic sampler including a rinsing unit for rinsing a needle 2 by immersing the needle 2 into a rinsing solution in a rinsing chamber 1 and a gas injecting unit for injecting gas towards an outer surface of the needle 2 when the needle 2 is raised from the rinsing solution. According to this configuration, it is possible to wipe out a contaminated rinsing solution remaining on the outer surface of the needle 2 by airflow in a non-contact manner.

The invention provides a full-automatic Ames experiment instrument. The full-automatic Ames experiment instrument comprises a culture dish storing and transferring system, a test tube transferring system and a sample adding system, wherein the culture dish storing and transferring system is configured in a manner that culture dishes are withdrawn one by one, so that a culture dish cover and a culture dish body of each withdrawn culture dish are separated, the culture dish bodies are transported to stations of the culture dishes, the separated culture dish bodies are covered by the culture dish covers, and the reintegrated culture dishes are placed in an accommodating cavity; the test tube transferring system is configured in a manner that test tubes are respectively moved to each scheduled test tube station, and substances in the test tubes are separately poured in each culture dish body in a corresponding dumping station; and the sample adding system has a plurality of storage containers, and is configured in a manner that the substances in the storage containers are transported to each test tube, so that each test tube receives at least two substances. Through the adoption of the full-automatic Ames experiment instrument disclosed by the invention, the culture dishes can be automatically transported to the scheduled positions, and the test tubes and the substances are automatically selected; and the reagents are added to the test tubes, and the mixed reagents are transported to the culture dishes, so that the Ames experiment is automatic, the experiment efficiency and the experiment precision are improved.

A pneumatic tube system, including at least one system control module for controlling delivery of a pneumatic carrier through pneumatic tubing. The system includes at least one pneumatic tube station having a sealer, the sealer includes a heating pad and a sealing strip, where the sealer automatically grips the open end within the heating pad and the sealing strip upon insertion of the bag into the system. In one example, the sealer creates a vacuum to extract air from an interior space of the bag. The sealer applies heat to the open end to seal the bag. The system includes at least one pneumatic tube station configured for sending at least one carrier, the at least one sending pneumatic tube station being in signal communication with the at least one system control module, where the at least one carrier is sent through the system by pneumatic tubing.

The problems associated with the traditional methods and devices in the field of cell cloning have been solved by the multi-compartment device and method in the present invention. The device combines the advantages of a traditional petri-dish and a traditional microplate. The multi-compartment device in the present invention comprises sidewalls, which are taller than openings of the multi-compartments. The cells in the suspension flow across the multi-compartments and seed inside the compartments during a plating process. The multi-compartment device in the present invention allows easier plating process, changing conditioned medium, and cell colony detachment and transfer. The multi-compartment device also minimizes the risk of cross-contamination during cloning process and during cell colony transfer. The invention also provides an exemplary method of using the multi-compartment device for cell cloning. In one aspect of the method, the multi-compartment device may be tilted before or after adding the cell suspension during plating process.

An apparatus (100) configured to simultaneously sample a plurality of seeds is provided. The apparatus (100) may include a grinder (110) configured to grind each of the seeds of a first plurality of seeds to produce a powder comprising a plurality of seed particles. A sample container (142) may be configured to receive the powder. Further, a cleaning device may be configured to introduce a neutral media to the grinder (110) to substantially prevent cross-contamination with a second plurality of seeds, which may be ground thereafter. The apparatus (100) may further comprise a mixing device (150) configured to mix the powder. Thereby a sample portion of the powder may be tested for the presence of a genetically modified organism, or other tests may be conducted thereon. A related method for high throughput simultaneous sampling of a plurality of seeds is also provided.

The invention discloses a vehicle-mounted hypochlorous acid water sterilizer. According to the technical scheme, the vehicle-mounted hypochlorous acid water sterilizer is characterized by comprising ashell, wherein a water tank is installed in the shell; an electrolysis box is placed in the water tank; a water absorption rod is inserted into the water tank; an ultrasonic fogging piece is arrangedat the upper end of the water absorption rod; a centrifugal fan for blowing air upwards is arranged at the bottom of the shell; an opening is formed in the upper end face of the electrolysis box; theelectrolysis box is provided with an anion exchange membrane for covering the opening; a positive-electrode electrolysis piece is arranged at the upper end of the anion exchange membrane; a negative-electrode electrolysis piece is arranged at the lower end of the anion exchange membrane; and the negative-electrode electrolysis piece is arranged in the electrolysis box. The negative influence of adisinfectant on the body health of people can be reduced while the interior of the vehicle is effectively disinfected.

A semi-conducting device has at least one layer doped with a doping agent and a layer of another type deposited on the doped layer in a single reaction chamber. An operation for avoiding the contamination of the other layer by the doping agent separates the steps of depositing each of the layers.

The present solution includes a 3D printer designed to meet clean room requirements. The printer can be configured for 3D bioprinting. The printer can be used to create cellular scaffolds, tissue grafts, and organs. The printer can include a sterile (or clean room-like) environment for the printing of items. The printer can include an enclosure that isolates the manufacturing processes from the external environment and that can be sterilized between printing runs. The solution also includes a printing kit that can be independently sterilized and passed into the system's enclosure.

An analytical sample collector for collecting animal urine includes a container for containing urine and a collection device for collecting urine. The collection device includes a receiver for receiving urine and a channelling element for channelling urine to the container. An attractant composition emits an odor that attracts animals to urinate on the receiver. Kits and methods obtain an analytical sample of animal urine, and collect and analyze an analytical sample of urine from an animal.

The invention provides a clinical jet type medicine applying device suitable for the obstetrics and gynecology department, and relates to the technical field of medical instruments. A liquid inlet bent pipe and a liquid drainage straight pipe are arranged outside the syringe shell, the syringe shell is connected with the disposable medicine applying spray head through the liquid drainage straight pipe, and a locking block is connected to the outside of the liquid drainage straight pipe; the push rod is connected to the interior of the injector shell, and one end of the push rod is connected with the rubber sealing plug. The disposable medicine applying nozzle and the syringe shell are connected together in a clamping mode, the disposable medicine applying nozzle is easier and more convenient to replace, the cross infection condition is prevented, other parts can be repeatedly cleaned and used, and the single-time medicine applying cost of an affected part is reduced. The problems that in order to prevent the occurrence of cross infection, a disposable medicine applying tool is generally and directly discarded, so that the medicine applying cost of a single affected part is high, and the requirement of low-cost treatment is difficult to meet are solved.

The invention discloses an anti-needling safety device for an injection device. The anti-needling safety device comprises an injection needle cylinder, an injection piston rod, an auxiliary positioning assembly, a front end nipple, an injection pintle, an injection needle, two sets of mounting assemblies, a contraction assembly and a limiting assembly. A rotating lantern ring is rotated, a linkage rod is driven to move in a following mode, the linkage rod slides in a limiting cavity and compresses a limiting spring, movement of the linkage rod drives a positioning baffle to move, so that the positioning baffle and a positioning check block are dislocated and separated, under reset driving of an extension spring, a linkage injection needle crumples towards the interior of the injection needle cylinder, the injection needle is stored, and the situation that after injection is completed, the injection needle is exposed, accidental puncture occurs and cross infection occurs is avoided; and under the cooperation of the auxiliary positioning assembly, the linkage rod pushes the sliding lantern ring to correspondingly slide on the outer surface of the injection needle cylinder, auxiliary positioning of the injection piston rod is achieved, and the condition of incomplete injection caused by incorrect force application points of workers is avoided.

The invention relates to the technical field of sputum aspirators, in particular to a special sputum aspirator with a self-disinfection suction tube for tuberculosis patients, which comprises a base, and universal wheels are arranged at four corners of the bottom surface of the base; according to the special sputum aspirator with a self-disinfection suction tube for tuberculosis patients, through the arrangement of the disinfectant preparation mechanism, the cleaning and disinfection mechanism and the waste water containing box, the sputum aspiration pipe can be disinfected in time after sputum is sucked, the defect that an existing sputum aspirator does not have the disinfection function is overcome, and the condition of cross infection caused by germs on the sputum suction tube can be effectively avoided; according to the special sputum aspirator with a self-disinfection suction tube for tuberculosis patients, through the arrangement of the sputum suction tank bearing mechanism, the sputum suction tanks, the negative pressure mechanism and the sputum suction mechanism, the number of the sputum suction tanks carried by the sputum aspirator is increased, sputum of different patients can be sucked conveniently, sampling and testing of the sputum in the later period are facilitated, and meanwhile, the workload of medical staff can be relieved.

Embodiments provide a redox flow battery, an ion exchange membrane for use in the redox flow battery and a method for producing the ion exchanger membrane. The ion exchange membrane includes a base layer, a first hydrophobic layer, and a second hydrophobic layer. The base layer includes sulfonated poly(ether ether ketone). The base layer has a first surface and a second surface. The first hydrophobic layer includes a polydimethylsiloxane elastomer. The first hydrophobic layer is positioned on the first surface of the base layer. The second hydrophobic layer includes the polydimethylsiloxane elastomer. The second hydrophobic layer is positioned on the second surface of the base layer. The ion exchange membrane is configured to prevent cross contamination of the first electrolyte and the second electrolyte. The redox flow battery includes a first half-cell, a second half-cell, and the ion exchange membrane. The first half-cell includes a first electrolyte. The second half-cell includes a second electrolyte. The first half-cell and the second half-cell are configured to undergo a redox reaction to discharge and charge the redox flow battery.

An automatic electrophoresis apparatus includes: a transfer film supply unit configured to supply a transfer film; a sample transfer unit configured to transfer a sample separated by electrophoresis to the transfer film; a post-processing unit configured to perform processing of the transfer film, to which the sample has been transferred, to obtain a transfer image thereof; and a transporting unit configured to transfer the transfer film along a transporting direction between each of units. The transfer film is provided with guide members that are configured to guide and support along the transporting direction.

The invention discloses a chip carrier for single sperm or extremely small amount of sperms, comprising a chip carrier, an X indicator axis, a Y indicator axis, and microarrays; the chip carrier is composed of a coating layer, a polymeric material layer and specific antibodies adsorbed on the coating layer; the polymeric material layer is located at the bottom of the chip carrier; the upper surface of the polymeric material layer is attached to the lower surface of the coating layer; the coating layer is provided with several microarrays. Single sperm or extremely small amount of sperms can be stored which realizes the effective storage of single sperm or extremely small amount of sperms, to avoid cross-contamination; in addition, precise access to sperm can be realized, and the maneuverability is very strong, which can solve the requirement of cryopreservation of sperm in patients with very few sperms.

Cutting board system with bowl / container attachment ring is a cutting board or butcher block with a free floating rigid bowl / container attachment ring around the perimeter of the cutting board or butcher block that is used to reversibly attach a special bowl or container thereto. The rigid free floating bowl / container attachment ring is a strong and sturdy support member that will not bend, twist, or deflect under the pressure of rigorous use of the cutting board or butcher block. Rigid free floating bowl / container attachment ring works in tandem with an L-shaped flange or rib on a bowl or container wherein the L-shaped flange or rib on a bowl or container is reversibly attachable to the rigid free floating bowl / container attachment ring. It is an optional aspect of cutting board system with bowl / container attachment ring to include a series of interchangeable multicolored cutting surfaces that may be placed on top of cutting board wherein certain colored cutting surfaces are used solely or specifically with certain foods or food groups in order to prevent cross contamination of the cutting board or butcher block between foods or food groups.