145 results about "Vacutainer" patented technology

The utility model provides a blood sampling device, which comprises a vacuum blood sampling assembly, a blood sampling assembly and a blood sampling assembly, the vacuum blood sampling assembly comprises a vacuum blood sampling tube and a piston, one end of the vacuum blood sampling tube is provided with a blood sampling opening part, the piston is positioned in the blood sampling opening part, the piston is hermetically connected with the inner wall of the vacuum blood sampling tube, and the piston can move in the vacuum blood sampling tube; the transfer assembly comprises a boosting tube and a driving needle, the driving needle is located in the boosting tube, one end of the driving needle is provided with a needle head, the other end of the driving needle is provided with a connector, the needle head is communicated with the connector, and the needle head can penetrate through the piston and then is communicated with the interior of the vacuum blood collection tube. Due to the fact that the blood collecting device is provided with the vacuum blood collecting assembly and the transferring assembly, after the vacuum blood collecting assembly is used for collecting blood, the blood collected by the vacuum blood collecting assembly can be transferred into other containers through the transferring assembly, a piston in the vacuum blood collecting tube does not need to be opened in the transferring process, blood leakage is avoided, and the blood collecting efficiency is improved. And the risk that blood is polluted is reduced.

A blood collection device comprising a coupler having a protrusion configured to engage a catheter, the coupler positioned at the distal end of a handle. An extension port is positioned adjacent to the distal end of the handle, the extension port configured to couple to a vacutainer assembly. A slider with a body disposed within an interior of the handle and an arm extending through an axial slot extending along a length of the handle, the slider body having a lumen extending through from a distal end of the slider body to a flow path opening along a length of the slider body, the slider configured to move axially along a length of the handle. A cannula extending from a distal end of the slider body. The cannula can comprise a lumen extending from a distal end into the slider body. Also a movable seal coupled to slider body, the movable seal configured to seal the slider lumen against the handle interior.

The invention belongs to the technical field of medical instruments, and relates to a high-speed sorting machine, which comprises a tube sorting unit for sorting scattered blood collection tubes to enable the blood collection tubes to be arranged in sequence; the sorting unit is used for sorting the blood collection tubes entering the tube sorting unit; the blood collection tubes sorted out of the sorting unit enter the sorting track; the at least one mechanical arm unit is used for clamping and placing the blood collection tubes on the sorting track to a preset position; the blood collection tubes on the sorting track are inserted into the tube inserting unit through the mechanical arm unit. After the structure is adopted, the device has the beneficial effects that the vacuum blood collection tubes can be continuously and quickly distributed to a plurality of sorting tracks after being rotated by a certain angle from a single tube sorting track. The functions of pre-sorting of the blood collection tubes in the sorting system and the buffer are achieved, and it is ensured that the problem of secondary sorting does not exist in the follow-up process; and the continuity of high-speed sorting is also ensured.

The invention discloses a specimen sampling device based on medical detection, and relates to the technical field of blood sampling, the specimen sampling device comprises a vacuum blood collection tube, a blood collection needle and a fixator, the vacuum blood collection tube comprises a bottle tube and a bottle cap, the fixator comprises a positioning frame, a sliding block, a puncture needle, a first spring, a second spring and a buckle, and a mounting groove is formed in the upper end face of the positioning frame; the vacuum blood collection tube is detachably installed in the installation groove, the sliding block is installed in the installation groove and is in elastic sliding connection with the positioning frame through a first spring, the puncture needle is installed in the sliding block and is in elastic sliding connection with the positioning frame through a second spring, and a hose is arranged between the blood collection needle and the puncture needle. The blood sampling device has the advantages of being convenient to operate and capable of automatically mixing the anticoagulant, and the problems that according to existing blood sampling equipment, medical staff need to operate with two hands, the blood sampling part of a patient is fixed with one hand, operation is complex, misoperation is prone to occurring, and the process of manually replacing a blood sampling bottle and shaking and mixing the anticoagulant is long in time consumption and low in efficiency are solved.

The invention discloses a device for preparing platelet-rich fibrin and an extraction method. The device comprises a vacuum blood collection tube. The device has the beneficial effects that when the gel is extracted after the injectable PRF gel is prepared, the rubber plug is firstly opened, and then the piston is moved downwards through the needle-free injector, so that the piston is in contact with the injectable PRF gel, and the injectable PRF gel can be conveniently extracted under the condition that the injectable PRF gel is not exposed; the injectable PRF gel is used for extracting the injectable PRF gel, pollution to the external environment during extraction of the injectable PRF gel is avoided, meanwhile, when the liquid injectable PRF gel is extracted, a piston is also directly moved downwards through a corresponding needle-free injector, so that the separated liquid injectable PRF gel is extracted, and the extraction efficiency is improved. The injectable PRF gel and the liquid substance are extracted by adopting a needle-free injector, so that the risk that a worker is accidentally punctured when the injectable PRF gel and the liquid substance are extracted can be avoided, and the extraction process of the injectable PRF is safer and more reliable.

The invention relates to the technical field of medical treatment, in particular to vacuumizing equipment for medical vacuum blood collection tubes, which comprises a rack, a driving motor is fixedly connected to the outer side of the rack, a lead screw is fixedly connected to the output end of the driving motor, and the two ends of the lead screw are rotatably connected to the outer side of the rack; the outer side of the bearing device is fixedly connected with the inner side of the rack; according to the device, after vacuumizing is finished, a telescopic air cylinder shrinks to drive a sliding plate to reset, at the moment, a cushion block slides upwards along with a sliding rod, a blood collection tube in a fixing cylinder is ejected out, an operator can take the blood collection tube more conveniently and rapidly, the operation is convenient, the labor intensity of the operator is reduced, and the labor intensity of the operator is reduced. And the vacuumizing needle does not need to be manually taken out from the fixing cylinder with great effort, the working efficiency is improved, and the vacuumizing needle is protected in an initial state by arranging the protective sleeve, so that the vacuumizing needle is prevented from being externally collided or damaged.

The multi-layer structure platelet-rich plasma preparation tube comprises a vacuum blood collection tube body, a rubber plug is installed at the top end of the vacuum blood collection tube body, and a calcium gluconate solution layer is arranged at the bottom in the vacuum blood collection tube body. A separation gel layer II is arranged on the upper side of the calcium gluconate solution layer in the vacuum blood collection tube body, and a vitamin C solution layer is arranged on the upper side of the separation gel layer II in the vacuum blood collection tube body. The invention has the beneficial effects that through the design of the separation gel layer I and the separation gel layer II, the effective isolation of the vitamin C solution layer and the calcium gluconate solution layer from the ACDA solution layer before centrifugal separation is realized, chemical reaction or degradation is avoided, and a mixture of vitamin C and PRP is conveniently and quickly obtained through centrifugal operation after blood drawing, so that the blood drawing efficiency is improved. The method is used for tissue repair, regeneration and whitening, the operation process is simplified, and the product quality and safety are improved.

The invention discloses coagulation-promoting freeze-dried microspheres, a preparation method thereof and application of the coagulation-promoting freeze-dried microspheres in a vacuum blood collection tube, and belongs to the technical field of medical instruments. The coagulation-promoting freeze-dried microspheres comprise kaolin, coagulation-promoting powder, bovine serum albumin, a dispersing agent and an adhesive, the preparation method comprises the steps of raw material suspension preparation, liquid nitrogen drop bead freezing forming, vacuum freeze drying and microsphere screening. According to the preparation method, the coagulation accelerator is prepared into the form of the freeze-dried microspheres, so that the production process is simplified, the energy consumption is reduced, the biological activity of coagulation accelerating components is effectively protected, the coagulation accelerating effect is quicker, more stable and more uniform, and the product quality of the vacuum blood collection tube and the reliability of clinical examination results are remarkably improved.

The invention discloses a vacuum blood collection tube defect detection system based on machine vision, which comprises a blanking module, a conveying module, a sorting module, a visual identification module and a control module, and is characterized in that the blanking module, the sorting module and the visual identification module are sequentially arranged along the conveying direction of the conveying module; the vacuum blood collection tubes fall into the conveying module through the blanking module, the conveying module conveys the vacuum blood collection tubes to the visual identification module for defect identification and sends a sorting instruction to the sorting module, the sorting module sorts out the defective vacuum blood collection tubes according to the sorting instruction, and intelligent defect detection and sorting of the vacuum blood collection tubes are achieved. According to the invention, a plurality of defects of the vacuum blood collection tube can be detected, such as tube body smudginess, cap plug and label defects of the vacuum blood collection tube, and the detection precision is higher after a large number of defect detection.

The application relates to the field of medical auxiliary devices, and discloses a blood drawing device. The blood drawing device comprises a bottom plate, a lifting assembly, a stand, a driving piece and a plurality of feeding assemblies. The stand is vertically arranged on the bottom plate. The lifting assembly comprises a lifting disc, a sleeve and a rotating block. The sleeve is sleeved on the stand and can slide along the axial direction of the stand. The driving piece drives the sleeve to rotate. The rotating block is fixedly connected with the sleeve and is in threaded connection with the stand. The lifting disc is fixed with the sleeve. A plurality of fixing sleeves are circumferentially arranged on the lifting disc. The plurality of feeding assemblies are circumferentially arranged on the outer periphery of the lifting disc, and the feeding assemblies are in one-to-one correspondence with the fixing sleeves. The feeding assembly comprises a storage box and a feeding push rod. The storage box is provided with a discharge port opposite to the fixing sleeve. The feeding push rod is aligned with the discharge port and can penetrate through the discharge port. The blood drawing device solves the problem that the discharge of the vacuum blood collection tube is slow when a large number of vacuum blood collection tubes are needed.

The utility model relates to the technical field of detection tools, and discloses a cattle early pregnancy protein detection card which comprises a detection bag and further comprises a detection pen, a test tube, a dropper and a needle bag, the detection pen, the test tube, the dropper and the needle bag are placed in the detection bag, two semicircular notches are formed in the side face of the detection bag, the detection pen comprises a pen shell and test paper, and the test paper is arranged in the pen shell. Two holes are formed in the side face of the pen shell, a hole is formed in the top end of the pen shell, a plurality of pieces of test paper are placed in the pen shell, the side faces of the test tubes are fixedly connected with the inner wall of the sealing gasket, the dropper is made of a soft plastic material, the needle bag comprises a packaging bag and a blood taking needle, the blood taking needle is placed in the packaging bag, and the sealing gasket is made of a plastic material. One end of the blood taking needle is movably connected with the needle sleeve in a sleeved mode, by arranging the detection pen loaded with a plurality of test cards, the economic burden of a small farm or a farmer is reduced, by arranging the vacuum blood taking tube, quantitative and automatic blood taking can be achieved, the difficulty of manual blood drawing is reduced, and operation is easy.

The negative pressure structure comprises a blood collecting needle and a vacuum bag, the blood collecting needle comprises a needle handle, a needle tube, a sleeve and the vacuum bag, the sleeve is made of a flexible film material, the needle tube is arranged in the sleeve, and the needle tube and the sleeve are fixed to the end face of the needle handle. A fixing part A and a fixing part B are arranged at the two ends of the vacuum bag respectively and are made of hard materials, the fixing part A is provided with a bag inlet, the bag inlet is provided with an inner film, the fixing part B is provided with a bag outlet, and the bag outlet is provided with an outer film. The lower end of the sleeve is fixed to the fixing piece A. The needle tube, the bag inlet and the bag outlet are located on the same vertical line. The tip end of the needle tube can pierce the inner membrane to enter the cavity of the vacuum bag, air in the blood taking needle is emptied through the vacuum bag, it is ensured that an existing vacuum blood taking tube can be filled with 2 ml of blood, and waste caused by discarding of the first blood taking tube which is not filled with blood is avoided.

The utility model relates to the technical field of medical instruments, in particular to a double-tube drop-resistant one-time vacuum blood collection tube. According to the technical scheme, the blood collection tube comprises a cylindrical blood collection tube main tube body structure, two separated blood collection tube matched containing spaces are formed in the blood collection tube main tube body structure, and two protective safe and stable columns which are distributed in a bilateral symmetry mode are arranged on the outer cylindrical face of the blood collection tube main tube body structure. The protection safety stabilizing columns are connected in a sleeving combination mode, the left side and the right side of the blood collection tube main tube body structure are each provided with a main body sealing matching cover, and the main body sealing matching covers are matched with a containing space in the blood collection tube main tube body structure through internal sealing structures. The multifunctional blood sampling device has the advantages that simultaneous detection of different directions and different functions of one device can be realized while detection is performed after blood sampling, space waste of blood sampling tubes can be reduced during blood sampling, and the multifunctional blood sampling device is higher in overall use convenience and more convenient to operate during detection.

The utility model discloses a transparent container laser headspace measuring device, which comprises a measuring device lower cavity and a measuring device upper cavity, the measuring device lower cavity supports the measuring device upper cavity, a vertical lifting motor subsystem is arranged on the measuring device lower cavity, a support frame cavity is arranged in the measuring device lower cavity, a measuring tool is arranged above the support frame cavity, and the vertical lifting motor subsystem is arranged on the measuring device lower cavity. The vacuum blood collection tube is arranged on the measuring tool, a strip-shaped through hole is formed in the side wall of the lower cavity of the measuring device, the vertical lifting motor subsystem penetrates through the strip-shaped through hole and is connected with the supporting frame cavity, and the vertical lifting motor subsystem controls the supporting frame cavity to move up and down. An optical adjusting frame platform and a photoelectric detector are respectively fixed on the opposite sides of the measuring device upper cavity, an optical adjusting frame is connected to the optical adjusting frame platform through bolts, an optical fiber collimator is arranged in the optical adjusting frame, and a light through hole is formed in the supporting frame cavity. By arranging the measuring tool, penicillin bottles / ampoule bottles / blood collection tubes of different sizes and specifications can be replaced.

The utility model discloses an anti-drop vacuum blood collection tube which comprises a blood collection tube body, an external thread rubber plug sheath is arranged above the blood collection tube body, an internal thread connecting groove is formed in the upper surface of the blood collection tube body, and an annular sliding groove is formed in the outer surface of the external thread rubber plug sheath. The inner wall of the annular sliding groove is slidably connected with two U-shaped fixing frames. According to the device, the internal thread connecting groove and the external thread rubber plug sheath are arranged, the internal thread connecting groove is in threaded connection with the external thread rubber plug sheath, vacuum sealing can be conveniently conducted on the blood sampling tube body, the annular sliding groove is in sliding connection with the U-shaped fixing frame in a matched mode, and an anti-disengaging assembly can be conveniently moved; in addition, by combining the resilience force of the telescopic spring, the sliding connection between the connecting seat and the T-shaped connecting rod, the sliding connection between the positioning seat and the T-shaped connecting rod, and the matching between the limiting rod and the limiting clamping seat, the external thread rubber plug sheath can be conveniently pulled and limited, and the situation that the external thread rubber plug sheath is loosened and falls off due to vibration is avoided.

The invention provides a hypertension blood sample protective agent, a vacuum blood collection tube for hypertension blood sample detection and application, and belongs to the technical field of medical instruments, the hypertension blood sample protective agent is characterized by being prepared from the following raw materials in parts by weight: enapremarate, an anticoagulant and a complexing agent; the vacuum blood collection tube for hypertension blood sample detection contains the hypertension blood sample protective agent. According to the application, the vacuum blood collection tube for hypertension blood sample detection is adopted for directly storing blood. By adopting the vacuum blood collection tube for hypertension blood sample detection, the tedious steps of reagent preparation and on-site reagent addition can be reduced, so that the detection efficiency and the accuracy of a detection result are improved.

The present invention discloses an intelligent automatic production line for vacuum blood collection tubes, comprising a peripheral frame body 1, wherein the peripheral frame body 1 is composed of a blood collection tube loader 9, a material transfer and labeling device 10, a flip dust removal device 11, a spray and visual inspection device 12, a drug drying device 13, a cap loader 14, a cap conveying and assembly device 15, a vacuum processing cap pressing device 16, a foam box automatic box filling device 17 and a packaging machine 18. Through an automatic control system and a robot control technology, the formed blood collection tubes are subjected to a full process of material transfer, labeling, spraying, dripping, visual inspection, drug drying, capping, vacuum processing, cap pressing, box filling and packaging, thereby greatly improving the quality and efficiency of blood collection tube production.

The utility model provides an anti-stabbing multichannel blood taking needle which comprises a hose and further comprises a blood taking needle head arranged at one end of the hose and a three-way connector arranged at the other end of the hose, two outlets of the three-way connector are respectively provided with a connecting plug, and the connecting plugs are respectively inserted into a vacuum blood taking tube in a separable mode. One end of the inner cylinder is connected with the hose, the needle core is connected with the other end of the inner cylinder, the telescopic assembly is used for protecting the needle core, the telescopic assembly is arranged on the outer side of the inner cylinder in a sliding mode, a protective cylinder is arranged on the outer side of one end of the inner cylinder, the protective cylinder and the inner cylinder form a containing cavity for containing the telescopic assembly, and the telescopic assembly is detachably connected with the protective cylinder. According to the anti-stabbing multichannel blood taking needle, the needle core is protected through the arrangement of the telescopic assembly, medical workers are prevented from being accidentally injured by the needle core in the operation process, meanwhile, pollution to the needle core is avoided, and the blood taking needle is safer and more reliable to use.

The invention relates to the technical field of blood collection tubes, in particular to a vacuum blood collection tube nitrogen charging device and a nitrogen charging method thereof.The vacuum blood collection tube nitrogen charging device comprises a lifting table, a loading frame used for containing the blood collection tubes is arranged below the lifting table, and a connecting base and a gas tank are arranged between the lifting table and the loading frame; the multiple gas tanks are linearly and evenly arranged on the surface of the connecting base, a moving assembly and a positioning mechanism are arranged on the lifting table, multiple rows of blood collection tubes are placed on the loading frame, the moving assembly is used for driving the gas tanks to inflate nitrogen to the blood collection tubes at different positions, and the positioning mechanism is used for accurately fixing the positions of the gas tanks. The positioning mechanism comprises a hydraulic cylinder, a connecting plate, an inserting rod, an inserting hole, an L-shaped frame, an elastic assembly, a positioning rod and a buffering assembly, the hydraulic cylinder is installed above the lifting table through the L-shaped frame, and the blood collection tube is limited through the arranged positioning mechanism, so that the blood collection tube can directly face the inflation needle.

This invention discloses a vacuum blood collection tube signing device and equipment. The device includes a motor-driven conveyor belt for transporting vacuum blood collection tubes. A viewing window is positioned above one end of the conveyor belt in the direction of its movement. Vacuum blood collection tubes and a barcode scanner are located on opposite sides of the viewing window. The rotating conveyor belt and the viewing window form an angle, and the vacuum blood collection tubes rotate within this angle. The barcode scanner scans and reads barcode information in various directions around the circumference of the rotating vacuum blood collection tube through the viewing window. The equipment includes a frame and a support frame, which are rotatably connected via a support shaft mechanism. The device is placed on the support frame. The barcode scanner is fixedly mounted on the support frame via a connector. The bottom surface of the support frame's base plate rotates and oscillates around the support shaft mechanism via a crank-rocker mechanism. This invention achieves automated scanning of vacuum blood collection tube information, improving work efficiency and reducing the error rate.

The utility model discloses a needle holder, which relates to the technical field of medical instruments and comprises a connector, a catheter and a tail needle, the connector comprises a puncture needle and a needle holding portion, the needle holding portion is made of transparent medical plastic materials, is cylindrical and is provided with a U-shaped through opening, the puncture needle is arranged inside the needle holding portion, the tail of the connector is connected with the catheter, and the tail of the connector is connected with the catheter. And the other end of the catheter is connected with a tail needle for puncturing the vacuum blood collection tube. The connector is connected with the blood sampling window of the peripheral arterial duct, the puncture portion is wrapped by the needle holding portion arranged outside the puncture needle, the puncture needle can be isolated, hands of medical staff can be protected, pricking risks are reduced, meanwhile, the U-shaped opening can be used for clamping the ducts at the two ends of the blood sampling window, the connector is fixed to the blood sampling window, and the puncture needle is convenient to use. The tail needle is connected with different vacuum blood collection tubes to collect arterial blood samples of a patient for many times, the number of times of puncture is reduced, and errhysis caused by the fact that the rubber plug in the blood collection window loses barrier capacity due to multiple times of puncture is prevented.

The utility model discloses a vacuum blood collection tube feeding device which comprises a feeding bin, a feeding mechanism and a material pushing correction mechanism, and the feeding bin is used for collecting vacuum blood collection tubes with blood samples; the feeding mechanism is arranged in the feeding bin, conveys the vacuum blood collection tubes in the feeding bin upwards and comprises a feeding plate assembly arranged in the feeding bin in a liftable mode and a lifting assembly connected with the feeding plate assembly and driving the feeding plate assembly to ascend and descend. The material pushing correction mechanism is arranged in the feeding bin and located above the feeding plate assembly, so that only one vacuum blood collection tube can be stacked at the upper end of the feeding plate assembly; comprising a material pushing plate rotationally arranged at the upper end of the feeding bin, two rotating blocks oppositely arranged on the two sides of the material pushing plate and connected with the feeding bin, and two push rods oppositely arranged at the upper end of the feeding plate assembly and opposite to the rotating blocks. The pushing correction mechanism is limited above the feeding plate assembly, so that only one vacuum blood collection tube is transversely stacked at the upper end of the feeding plate assembly, and the posture of the vacuum blood collection tube is fixed and controllable.

The utility model provides a sterile vacuum blood collection tube, which relates to the technical field of vacuum blood collection tubes and comprises a tube body and a tube cover, the inner surface of the tube cover is in threaded connection with the outer surface of the tube body, a first rubber plug is arranged on the inner surface of the tube body close to the top, and a second rubber plug is arranged on the inner surface of the tube cover close to the top. And first supporting seats are symmetrically and fixedly connected to the positions, close to the lower side of the second rubber plug, of the inner surface of the pipe cover, first springs are symmetrically and fixedly connected to the outer surfaces of the first supporting seats, and a first clamping block is fixedly connected between the end faces of the two first springs. According to the blood collection tube, the needle head is sterilized and cleaned in the sealed environment of the tube cover, and then the first rubber plug is inserted into the tube body, so that the problem that in the prior art, after a blood collection needle is directly exposed in air and inserted into the blood collection tube, the sterile environment in the blood collection tube can be damaged, and certain risks exist is solved.

The invention provides a protective disease source blood sample collection device, and relates to the technical field of blood collection. The device comprises a blood taking needle assembly used for establishing a blood taking channel through venipuncture; the bottom assembly is used for providing an autorotation power source with a precise angle and a control function; the placing assembly is arranged at the upper part of the bottom assembly, is used for placing a vacuum blood collection tube and is driven by an autorotation power source of the bottom assembly to autorotate; the inserting and pulling assembly is arranged in the center of the placing assembly and used for inserting and pulling one end, inserted into the vacuum blood collection tube, of the blood collection needle assembly in a reciprocating mode; and the locking assembly is arranged between the bottom assembly and the placing assembly and used for locking the placing assembly. Through the arrangement of the placing assembly, the bottom assembly, the inserting and pulling assembly, the locking assembly and the blood taking needle assembly, vertical and accurate inserting and pulling of the tail needle are achieved, the safety of sample collection is improved, and good protection performance is achieved.

The utility model discloses an auxiliary sample liquid transfer device for erythrocyte sedimentation rate detection. Comprising a main machine body, a tube body inlet, a tube body operation cavity, a tube body carrying table, a loading table and a sample liquid transfer tube, wherein the tube body inlet and the tube body operation cavity are communicated with the main machine body; the tube body carrying table is arranged in the tube body operation cavity; the loading table is arranged below the front side of the main machine body and is used for placing a vacuum blood collection tube and a glass tube; the pumping driving unit acts on the sample liquid transfer pipe to generate directional negative pressure to realize sample liquid transfer, and the pipe body recycling unit is used for transferring and discarding the used sample liquid transfer pipe; by designing the flexible sample liquid transfer tube and integrating the pumping driving unit and the tube body recovery unit acting on the sample liquid transfer tube, accurate quantitative transfer of the sample liquid is realized, manual operation is replaced, the blood transfer working efficiency and quality are improved, and the sample liquid transfer tube is designed as a disposable consumable and can be automatically recovered after being used, so that the blood transfer efficiency is improved. And the use convenience and safety of the system are greatly improved.

The invention provides a separating medium, a kit and a method for separating microorganisms in positive blood. The method for separating the microorganisms in the positive blood comprises the following steps: firstly, centrifuging a positive blood culture by adopting a vacuum blood collection tube containing separation gel, and collecting a first separation sample containing the microorganisms to be separated; and then, carrying out centrifugal treatment on the first separation sample by using different separation liquids, and carrying out collection and subsequent identification analysis on the microorganisms in the positive blood according to different densities of the microorganisms to be separated. The traditional culture technology is long in time consumption; in the prior art, microorganisms in a positive blood culture bottle cannot be rapidly and efficiently enriched and purified by pretreatment methods reported in literatures, and especially for gram-positive bacteria, the identification rates of the multiple pretreatment methods combined with mass spectrometry are low, and universality does not exist. The invention provides a rapid purification method which is simple and convenient to operate and high in identification rate and does not influence the bacterial activity, so that the inspection turnover time is shortened, and the clinical diagnosis and treatment efficiency is improved.

The utility model discloses a miniature environment-friendly teaching device for chemical gas production and property inspection, which comprises a vacuum blood collection tube, a vein blood collection needle, a medical three-way valve, a first injector, a second injector, a third injector and a standby injector, the vacuum blood collection tube consists of a tube body and a rubber plug, and an opening is arranged at the top of the tube body. When the chemical experiment device is used for carrying out a conventional gas-placing chemical experiment, the vacuum blood collection tube is used as a reaction device, the vein blood collection needle is used for conveying gas, related property experiments are carried out in the first injector and the second injector through connection and conversion of the medical three-way valve, and the spiral connector of the vein blood collection needle is perfectly matched with the medical three-way valve; good air tightness is guaranteed, required instruments are miniature, simple and environment-friendly, the reagent dosage is small, the experiment phenomenon is obvious, an airflow channel can be controlled, the process is simple, the effect is high, and when experiments of toxic gas preparation and property inspection are conducted, safety is high, and students can conduct manual operation by themselves.

The invention discloses a blood routine microsphere, a preparation method thereof and application of the blood routine microsphere in a vacuum blood collection tube, and belongs to the technical field of medical instruments. The blood routine microsphere is composed of ethylenediamine tetraacetic acid salt and an excipient, all the components are dissolved in deionized water to form a solution, the solution is rapidly frozen in liquid nitrogen through a bead dropping machine to form a microsphere precursor, and then the freeze-dried microsphere with the diameter of 2.0-6.0 mm is prepared through a vacuum freeze-drying process. The microspheres have the characteristics of uniform particle size, rapid dissolution and stable anticoagulation effect. The microspheres are applied to a vacuum blood collection tube. According to the invention, the production process of the traditional vacuum blood collection tube is simplified, the defects that the liquid anticoagulant is not uniformly sprayed and blood coagulation is easily caused are overcome, the product quality and the production efficiency are improved, and the production cost is reduced.

A blood collection system (10) may include a needle assembly (14), which may include a needle (16) configured to receive a vacuum blood collection tube. The blood collection system (10) may include a tube, which may include a distal end and a proximal end. The proximal end may be coupled to the needle assembly (14). The tube may include a first flow channel (66) and a second flow channel (68). The first flow channel (66) may be configured to collapse at a lower pressure differential than the second flow channel (68).

The invention discloses a coated high-barrier vacuum blood collection tube and a preparation method thereof, and relates to the technical field of plastic tubes, the coated high-barrier vacuum blood collection tube comprises a first tube body, and the inner wall of the first tube body is sequentially covered with a modified layer and an inorganic barrier layer; the first pipe body is made of a plastic material, the modified layer is made of a solid compound material containing a C-O-Si chemical bond, and the inorganic barrier layer is made of a solid oxide material. The modified layer of the solid compound containing the C-O-Si chemical bond is additionally arranged between the inorganic barrier layer and the first pipe body, the adhesive force between the inorganic barrier layer and the first pipe body is improved, meanwhile, gas and water vapor are blocked through the compactness of an inorganic material of the inorganic barrier layer, migration of various additives in a plastic material is inhibited, and the service life of the plastic pipe is prolonged. The vacuum holding time of the blood collection tube is prolonged, the water loss and water absorption of the first tube body are reduced, and meanwhile the safety of stored objects is improved.