16results about How to "Avoid external pollution" patented technology

The invention discloses a micro-fluidic chip for separating platelet-rich plasma and a use method of the micro-fluidic chip. The micro-fluidic chip comprises a sample injection chamber, a red blood cell storage chamber, a red blood cell collection chamber, a PRP collection chamber, a PPP collection chamber, a boundary layer detection channel, a red blood cell extraction channel, a PRP extraction channel and a PPP extraction channel, the red blood cell collection chamber, the PRP collection chamber and the PPP collection chamber are provided with corresponding negative pressure output channels and negative pressure interfaces. By adopting the micro-fluidic chip disclosed by the invention, platelet-rich plasma can be separated in a closed chip in the whole process, and external pollution is avoided. The operations of centrifugal layering, red blood cell extraction, plasma extraction, PRP enrichment and the like in the PRP preparation process are all continuously carried out, so that the PRP preparation time can be effectively shortened.

The utility model discloses a water quality monitoring device for ultrapure water. The water quality monitoring device comprises a base, a detection frame and an equipment frame, the detection frame is connected between the base and the equipment frame, a detector is fixed to the inner wall of the detection frame through bolts, a power source and a controller matched with the detector are arranged in the equipment frame, and a display screen is arranged on the outer wall of the equipment frame. After one side of the base is opened and covered by the cover plate, after the detection pipe is stored in the cavity of the base through the winding mechanism, one end of the detection pipe is detachably connected with the detector, the other end of the detection pipe is connected with a sampling pump, and the sampling pump is connected with a sample by opening the cover plate. Compared with the prior art, the utility model has the advantages that: through the winding mechanism and the modular layout, the space occupation of equipment is obviously reduced, the portability is enhanced, the detection tube is accommodated in the base, the external pollution is avoided, and the accuracy of the detection result is ensured.

The utility model belongs to the field of box bodies, particularly relates to an air cushion powder box made of a degradable high polymer material based on a button type structure, and aims to solve the problems that although an existing air cushion powder box can be used for containing air cushion powder cakes, the air cushion powder box does not have additional sealing and waterproof effects, a buckle structure is mainly adopted, a user needs to make strength to buckle the air cushion powder box, and sometimes, the force is too large. In order to solve the problem that a traditional powder puff box is not stably held and is easy to fall off from a hand, the following scheme is provided: the powder puff box comprises a box body, the top of the box body is provided with a top cover, the top cover can be used for sealing the top of the box body, the top of the box body is provided with a powder puff box, the powder puff box is positioned in the top cover and the box body, the box body is covered with the powder puff box, and a powder puff can be placed on the top of the powder puff box; according to the utility model, the powder box is more layered, the powder is more stable through the connection of the buckle assembly, and the sealing structure can tightly seal the powder box to prevent cosmetics from being polluted and dried by the outside.

The invention discloses a test system for an electric vehicle over-charging gun line liquid cooling device, and the system comprises an oil tank which is used for storing oil and carrying out the operation and liquid charging of a tested cooling unit; the offline filtering unit is connected with the oil tank; the liquid filling unit is respectively connected with the tested cooling unit and the oil tank; the test unit is connected with the tested cooling unit; the testing unit is controlled by the testing platform electric control unit, and the electrical wiring of the tested cooling unit is connected with the testing platform electric control unit through the electrical interface, so that electrification and high efficiency of a testing process are realized, a result is automatically judged by logic in the testing process, human errors are avoided, and liquid filling is automatically completed; test records are automatically generated and archived, the product test digitization is improved, the test system is integrally closed, a filter device is arranged, external pollution is avoided, and the product cleanliness is improved.

This utility model proposes a preheating and modification device for polymer materials used in the rotational molding of sports equipment. The device includes a mixing drum, with a hopper fixedly connected to the upper surface of the mixing drum. An electric injection valve is fixedly connected to the outer surface of the bottom of the hopper. A feeding component is located above the hopper, and a mixing component is located outside the mixing drum. An annular electric heating cover is fixedly connected to the outer surface of the hopper. This invention relates to the field of rotational molding of sports equipment. This utility model, through the combination of the annular electric heating cover and the arc-shaped electric heating wire, forms a dual preheating assembly. Furthermore, the stable feeding by the feeding component and the efficient mixing by the mixing component ensure uniform preheating of the material. Additionally, a centrifugal pump extracts modifier from the modifier storage tank via a suction pipe and sprays it evenly onto the surface of the high-temperature material through a nozzle, enabling modification during preheating. Thus, preheating and modification can be quickly completed within a single device, improving production efficiency.

The embodiment of the present invention provides a negative pressure blood sampling and storage integrated device, which relates to the field of medical devices, and specifically includes a straw, a mounting tube and a blood sampling puncture assembly. A straw is mounted on one end of the mounting tube, a suction cup is mounted on the other end, and a support is arranged in the mounting tube; a presser is arranged in the middle of the suction cup, the blood sampling puncture assembly is arranged between the presser and the support, a first elastic member is arranged between the blood sampling puncture assembly and the support, a second elastic member is arranged between the blood sampling puncture assembly and the presser, a perforation is arranged in the middle of the presser, and a fixed structure is also arranged in the mounting tube. The negative pressure blood sampling and storage integrated device in the embodiment of the present application combines a straw, a suction cup and a blood sampling puncture assembly to achieve the purpose of puncture, blood sampling and storage integration, making fingertip blood sampling more convenient and quick, and can be completed by self-service. In addition, the amount of blood collected from the fingertips is increased by forming a negative pressure environment, and a sealing effect is produced by the suction cup to prevent external contamination during the blood sampling process.

The utility model relates to the technical field of cups, and discloses a disposable cup which comprises a cup body and further comprises a cup edge arranged on the top of the cup body. The filter cone is movably mounted at the top opening of the cup body; the sealing cover is used for sealing the filter cone. According to the disposable cup, the cup body of the annular folding corrugated structure is adopted, storage and carrying are convenient, and the storage space is reduced; through the filter cone, solid-liquid separation can be conveniently carried out when drinks such as coffee, tea leaves and medicine granules are brewed, and the taste of the drinks is improved.

The utility model discloses a sterile anti-pollution blood transfusion apparatus, which belongs to the technical field of blood transfusion apparatuses and comprises a blood transfusion apparatus main body, the blood transfusion apparatus main body comprises an upper blood transfusion tube, the top end of the upper blood transfusion tube is communicated and provided with an upper needle head seat, and the outer surface of the upper blood transfusion tube is movably provided with a flow stopping clip. An upper blood bag needle head is installed on the inner wall of the upper needle head base in a sliding mode, a dropper is arranged at the bottom end of the upper blood transfusion tube and comprises an upper tube body and a lower tube body, and the upper tube body and the lower tube body are used in a threaded fit mode; the upper protective cover and the lower protective cover are arranged to isolate and protect the upper blood bag needle head and the lower blood transfusion needle head, external pollution is avoided, accidental puncturing can be avoided, meanwhile, the length of the upper blood bag needle head extending out of the upper needle head base can be adjusted in a sliding mode, and the position is locked through the positioning pin; the blood bag plug can be adaptively adjusted and used according to the thicknesses of blood bag plugs of different specifications, popularization and practicability are improved, and the blood bag plug is not limited to nurses with too hard professional skills.

The utility model discloses a hand -control press formula water sample quick collection and storage integration device, including water sample storage bag, the top of water sample storage bag one end is provided with the water inlet pipe, and the water inlet pipe is seted up with the water inlet, the bottom of water sample storage bag is provided with the drain, and the outside of drain is provided with control valve, install the cone -shaped cylinder in the water inlet pipe, and the bottom end of cone -shaped cylinder stretches into water sample storage bag inside, the outside of cone -shaped cylinder is provided with screen, and the bottom of cone -shaped cylinder is provided with sterile filter membrane layer, the top of inside water inlet pipe is installed with check valve, and check valve is located below water inlet, the utility model has the beneficial effects: the utility model can complete the filtration work in the sampling site instantaneously, can greatly shorten the time of sample processing simultaneously, can reduce the risk of microbial change, reduce the operation difficulty, improve the work efficiency, realize water quality analysis in the precision and timely development of sampling point, guarantee the real -time nature and reliability of data.

The utility model discloses a kind of feeding bottle cleaning disinfecting drying integrated machine including base unit, washing drying unit, spraying assembly, lower layer shelf, upper layer shelf, water supply unit and waste water collection unit, washing drying unit, water supply unit and waste water collection unit are located on base unit, spraying assembly and upper layer shelf are all located in washing drying unit, spraying assembly is detachably fixed connection with base unit, upper layer shelf is detachably fixed connection with washing drying unit, lower layer shelf is sleeved on spraying assembly, compared with prior art, the equipment has the remarkable advantages of high integration, cleaning thoroughly, convenient to use and sanitary safety etc.

The invention discloses a cell sample treatment method, device and system and a medium. The method comprises the following steps: enabling a cell sample to flow into a centrifugal container; performing centrifugal treatment on the cell sample in the centrifugal container to obtain initial cell sap; performing antigen binding and magnetic separation on the initial cell sap to separate out enriched cell sap; activating the enriched cell sap by inputting a regulator to obtain activated cell sap; performing genetic modification on the activated cell sap to obtain target cell sap; and sub-packaging the target cell sap into a plurality of preparation bags. According to the full-closed cell sample treatment device, a full-closed full-flow cell sample treatment process integrating cell sorting, cell magnetic sorting, cell activation, cell genetic modification and a cell preparation is realized, the requirement of working in a sterile environment is met, and external pollution of the cell sample in the treatment process can be avoided. Furthermore, high-efficiency, standardized and large-scale production and preparation of the target cell sap are realized.

The utility model provides a Luer multi-channel connector with a forced mixing assisting function and a mixing suite. The Luer multi-channel connector with the forced mixing assisting function comprises a forced mixing assembly, and at least two Luer connectors are arranged outside the forced mixing assembly for connection; the forced mixing assembly comprises an I-shaped hollow cavity, a Y-shaped hollow cavity, an L-shaped hollow cavity, a V-shaped hollow cavity or an X-shaped hollow cavity and a built-in mixing assisting part, and the mixing suite comprises a Luer multi-channel connector with a forced mixing assisting function, at least one injector pre-filled with liquid and at least one injector pre-filled with solid-phase powder which are combined to form a closed forced mixing system. By alternately pushing the plunger rods of the at least two injectors, liquid and solid powder or another liquid are alternately forced in a reciprocating manner in the plurality of injectors through the mixing suite for multiple times to obtain homogeneous solid-liquid or liquid-liquid mixture. According to the utility model, the solid phase and the liquid phase which are pre-filled in the injector can be conveniently and quickly forced to be mixed, bubbles can be reduced, external pollution and material waste are avoided, and the operation preparation time is shortened.

The utility model discloses a kind of quick samplers, it is related to agricultural product detection technical field.The sampler includes outer sleeve, the upper connecting pipe of activity connection in its upper end, the replaceable pipe of being penetrated through outer sleeve, and the adjusting rod cover of being penetrated through outer sleeve, upper connecting pipe and replaceable pipe in proper order.Adjusting rod cover is equipped with pull-out rod, its lower end is equipped with sealing piston and is sealed with replaceable pipe inner wall cooperation;Replaceable pipe lower end detachably connects multiple types of sampling head, and different sample form is adapted.Outer sleeve side is equipped with finger sleeve ring and clamping device, the latter realizes the quick locking and release of pipe by lever mechanism.By the cooperation of double sealing structure and stroke adjusting mechanism, the purity of sample and sampling quantity precision control are effectively guaranteed, the problems, such as traditional sampling operation cumbersome, poor versatility and sample easy to be contaminated, are solved, and sampling efficiency and reliability are significantly improved.

According to the focusing and leveling system and the photoetching machine provided by the invention, at least one of the projection module and the detection module is configured as the integrated cavity, so that external pollution is prevented, and chromatic aberration caused by arrangement of transmission-type optical window elements in the projection module and the detection module is avoided; therefore, the problem that the measurement precision is influenced by the residual chromatic aberration carried by a transmission-type optical window element in the focusing and leveling system can be solved, and the measurement precision of the focusing and leveling system is improved. In other words, the use of transmissive elements can be reduced to suppress chromatic aberration while preventing external contamination from intruding into the system without a diaphragm.

The application relates to a driving mechanism and a surgical robot, which comprises multiple independently controlled multi-stage telescopic slides, each of which is provided with a power box, and a telescopic shell is further arranged on the multi-stage telescopic slide, the telescopic shell is used for protecting the outer side of the multi-stage telescopic slide, the telescopic space of the telescopic shell and the working space of the power box do not interfere with each other; in linear motion, the multi-stage telescopic slide has an extended state and a contracted state, the multi-stage telescopic slide comprises multiple-stage linked slides, in the contracted state, the multiple-stage linked slides are completely folded, and the telescopic shell is folded together to coat the multi-stage telescopic slide. The telescopic space of the telescopic shell and the working space of the power box do not interfere with each other, that is, the structural design of the telescopic shell needs to meet the requirement that the telescopic space after extension or contraction does not affect the operation of the power box, so that stable power output of the power box is ensured.