49 results about "Blood gas analyzer" patented technology

The invention discloses a calculation method for arterial oxygen saturation by using the characteristic quantity of a dual-wavelength photoelectric volume pulse wave. The calculation method comprises the following steps of synchronously acquiring pulse oximeter signals with different wavelengths under sources during a period of time and taking the logarithm to obtain a logarithmic under two wavelengths; extracting characteristic quantities of dual wavelengths by using an extraction method for direct current characteristic quantity and alternating current characteristic quantity of the dual wavelengths in a time domain or a frequency domain; removing the direct current characteristic quantity and the alternating current characteristic quantity which have gross errors according to the 3sigma criterion, and taking a mean value of the direct current characteristic quantity and the alternating current characteristic quantity of which coarse noises are removed as a final characteristic quantities of dual-wavelength photoelectric volume pulse wave; extracting a certain quantity of characteristic quantity samples of the photoelectric volume pulse wave, measuring a truth value of the arterial oxygen saturation by using a blood-gas analyzer, and establishing a correction model of the truth value of the arterial oxygen saturation and the characteristic quantity of the photoelectric volume pulse wave; extracting the characteristic quantity of the photoelectric volume pulse wave of a detected object, and calculating the arterial oxygen saturation by using the correction model.

The invention discloses an extracorporeal life support control device and method. The control device comprises an ECMO control system, a blood-gas analyzer, a biochemical analyzer, an ACT detector, anair-oxygen mixer and an injection pump, and the ECMO control system is separately connected with the various instruments. Intelligence of ECMO equipment is improved, and the ECMO equipment can be automatically adjusted along with conditions of a patient in the aspect of certain treatment means. Prompt response ability of a system to change of the conditions of the patient is improved. By two adjusters with key functions, a target value can be adjusted finely, and the circumstance that the rotating speed is changed due to shaking and misoperation is avoided.

The application discloses a liquid sampling device, a blood cell analyzer and medical equipment. The liquid sampling device comprises a rack (9) and a sampling component mounted on the rack (9), wherein the sampling component comprises a swab (4) and a sampling needle (5) contained inside the swab (4); the liquid sampling device has a test tube placement position; the sampling component has a sampling position located above the tube placement position; the liquid sampling device further comprises a shielding component which comprises a bracket (8) and a baffle ring (7); the bracket (8) is fixed on the rack (9) and extends to the position between the sampling position and the test tube placement position; the baffle ring (7) is movably assembled on the bracket and has a floating gap (81) is reserved between the baffle ring (7) and the bracket (8); a guide hole (7a) through which the sampling needle (5) can penetrate is formed in the baffle ring (7), and the guide hole (7a) is shrunk from upside to downside. According to the liquid sampling device, the sampling needle can suck liquid successfully from a test tube, and blood-carrying bubbles in the test tube are prevented from entering the guide hole to pollute the swab.

The invention discloses a production method of quality control products of a blood gas analyzer, which comprises the following steps of: preparing a quality control liquid which includes an HEPES buffer solution with concentration of 30 to 50mmol / L; preparing an equilibrium gas which is a mixed gas of CO2, O2 and nitrogen gas; connecting the prepared quality control liquid and equilibrium gas into the corresponding pipelines respectively, meanwhile filling the liquid and gas into an ampoule bottle; and drawing out the pipelines from the ampoule after the volume of quality control liquid filled into the ampoule bottle reach the required level, meanwhile using high temperature flames to seal the bottle. The method is to fill the mixed gas of O2, CO2 and N2 by a predetermined ratio to the ampoule bottle, add the prepared quality control liquid while filling gas, and seal the bottle in the meanwhile. Therefore, the produced quality control substances will not change the predicted gas concentration level due to bottle sealing to a great extent, so the quality of the produced quality control products is reliable.

The invention relates to a blood-gas reaction monitor and control device which belongs to the technical field of fluid detection and comprises a gas supply system, a gas mixing tank, a gas-liquid reaction tank and a data acquisition and control device, wherein the gas supply system comprises a steel bottle cabinet and a steel bottle arranged in the steel bottle cabinet; through respective pipeline, the steel bottle and electromagnetic valves arranged on the pipelines are respectively connected with the gas mixing tank and the gas-liquid reaction tank which are communicated; the gas mixing tank is mutually communicated with the gas-liquid reaction tank; the gas mixing tank is internally provided with a pressure sensor, and the gas-liquid reaction tank is internally provided with a liquid-level detector, a pressure sensor, a pH electrode and a dissolved oxygen sensor; a plurality of gas concentration sensors are fixed on the lateral wall above the gas-liquid reaction tank; and the data acquisition and control device is used for controlling the electromagnetic valves connected to the pipelines and acquiring the measured data from the pressure sensor, the pH electrode, the dissolved oxygen sensor and the gas concentration sensors. The invention is suitable for the detection of aqueous solution and non aqueous solution, can detect gases such as oxygen, nitrogen, carbon monoxide, carbon dioxide, nitrogen oxide, nitrogen dioxide, and the like, is also suitable for the carrier gas performance analysis of natural blood including human and animals, and also has all functions of a blood gas analyzer.

The invention relates to a linkage control device. The linkage control device comprises a power unit and a rotating component provided with bosses, wherein the power unit generates power to drive the rotating component to rotate. The linkage control device also comprises valve components, a signal control unit, sensing switches and sensing pins, wherein the valve components are matched with the bosses of the rotating component in a pushing manner; the signal control unit controls the start or stop of the power unit; the sensing switches are connected with the signal control unit via signals; and the sensing pins are arranged together with the sensing switches in pairs and are arranged on the rotating component. The linkage control device can realize accurate control of time sequences of various liquid and gas switches, avoid disorders caused by mutual influence in the process, minimize the cost and achieve the best control effect. Besides, the linkage control device has simple structure, lower cost and stable and accurate linkage guarantees.

The invention discloses a blood gas analyzer which comprises a needle valve arranged in a sampling frame, a sample box connected with the needle valve, a first pump body connected with the sample box, a waste liquid bag connected with the first pump body, a liquid detector connected with the needle valve and the second pump body, a third electromagnetic valve connected with the liquid detector, a first electromagnetic valve connected with the second pump body and a third pump body connected with the needle valve and the waste liquid bag, wherein in the sample box, one end of a front detector is connected with the needle valve, while the other end of the front detector is sequentially connected with a detection membrane pipe and a rear detector, and the rear detector is connected with the first pump body; the above parts are connected through flow pipes; a memory is connected with the detection membrane pipe through an electrode; and the first electromagnetic valve and the second electromagnetic valve are both provided with air inlets. According to the invention, a gas-liquid mixed calibration method in the prior art is replaced by liquid calibration, so that the method is more convenient for use, and faults caused by that liquid enters an air path are avoided, the fault probability is reduced, and the reliability of the analyzer is improved.

The invention relates to a blood-gas analyzer. The blood-gas analyzer comprises a test card assembly and a reagent pack assembly, wherein the test card assembly at least comprises a test card main body provided with a calibration solution port; the reagent pack assembly at least comprises a rotary switch assembly, a solution storage device, a gas inlet device and a sampling device provided with a feeding needle, the rotary switch assembly comprises a first orifice communicated with the solution storage device, a second orifice communicated with the sampling device, a fixed valve body of a third orifice communicated with the gas inlet device as well as a rotary main body provided with a communicating tube, two ends of the feeding needle are communicated with the second orifice and the calibration solution port respectively, and the rotary main body is arranged in the fixed valve body and can rotate relative to the fixed valve body so as to realize communication between the first orifice and the second orifice, communication between the second orifice and the third orifice or closing of the second orifice. The blood-gas analyzer realizes on-off control of different tubes by the aid of the rotary switch assembly, does not need actions of compressing and releasing a rubber tube, avoids the hidden danger of tube blockage and prevents the calibration solution from leaking.

Disclosed are a linkage control device and a blood gas analyzer adopting the linkage control device. The linkage control device comprises a power unit and a rotating component (4) provided with bosses (41, 42). The power unit generates power to drive the rotating component (4) to rotate. The linkage control device further comprises valve components (5, 6, 7, 8), a signal control unit, sensing switches, and sensing pins (43, 44, 45, 46). The valve components (5, 6, 7, 8) are matched with the bosses (41, 42) of the rotating component (4) in a pushing manner. The signal control unit controls the start or stop of the power unit. The sensing switches are connected to the signal control unit via signals. The sensing pins (43, 44, 45, 46) are arranged in pair with the sensing switches and are arranged on the rotating component (4).

The invention discloses a blood-gas analyzer and a detection method thereof. The blood-gas analyzer comprises a blood sample introduction device, a reagent blank introduction device, a cleaning reagent introduction device, a waste liquid recovery device, an electrochemical detection device, an optical detection device, a three-way rotary valve and a double-way rotary valve. Through the three-way rotary valve and the double-way rotary valve, electrochemical detection and optical detection are skillfully combined. A whole blood sample to be detected is subjected to pH and ion determination and simultaneously, the optical detection method determines oxidized hemoglobin and reduced hemoglobin. The blood-gas analyzer saves time, simplifies operation and reduces a patient seek treatment cost. The apparatus detection process is completely automatic so that the detection is convenient and fast and human influence is small.

A medical tested object auto-ejection structure comprises a detection instrument and a tested object (1). An insertion port is formed in the detection instrument. When the tested object (1) is inserted in the instrument through the insertion port, the bottom end of the tested object (1) presses a bulge (21) used for rebounding, and a raised step (11) arranged on the surface of one side of the tested object (1) is locked on a clamping buckle (31) arranged at a position corresponding to the step on the instrument simultaneously, and after a test is finished, the instrument releases the locking of the clamping buckle (31) for the tested object (1) by a transmission device, and the tested object (1) is ejected from the instrument in time under the action of the bulge (21) used for rebounding, thus solving the problem of forgetting to pull the tested object out or inability to pull it out in time, and improving the reliability of the product.

The invention relates to a blood gas analyzer and a blood gas biochemical test card. The blood gas biochemical test card at least includes a test card main body equipped with a sample introduction port, an air extraction port and a liquid pipeline, and an electrode circuit board arranged on the test card main body; the liquid pipeline includes a waste liquid chamber, a test liquid pipeline having one end communicating with the sample introduction port, and an electrode pipeline having two ends respectively communicating with the waste liquid chamber and the test liquid pipeline; the electrode pipeline is connected with the electrode circuit board; the waste liquid chamber at least includes a first waste liquid chamber and a second waste liquid chamber arranged side by side, and a liquid discharge port communicating with the first waste liquid chamber and the second waste liquid chamber; the first waste liquid chamber is equipped with a liquid inlet communicating with the electrode pipeline; the second waste liquid chamber is equipped with a liquid outlet communicating with the air extraction port; the liquid outlet is located above the liquid inlet; the liquid discharge port is located at one side close to the liquid outlet. The air extraction port has no need of arrangement of a seal plug, an external device directly communicates with the air extraction port, the problem of debris generation due to piercing of the sealing plug does not exist, and the hidden danger of test scrapping caused because debris pollutes an electrode is eliminated.

The invention relates to a blood gas analyzer and a blood gas biochemical test card thereof. The blood gas biochemical test card at least comprises an abutting and pressing element, a test card main body, a liquid pipeline and an elastic element, wherein the liquid pipeline is arranged on the test card main body; the elastic element is connected with the test card main body and seals the liquid pipeline; a groove is formed in the surface, opposite to the elastic element, of the liquid pipeline; the elastic element is positioned between the groove and the abutting and pressing element; the abutting and pressing element is provided with a press head matched with the shape of the groove. The groove is formed in the liquid pipeline and forms a whole with the liquid pipeline; no excessive cavity is formed; no bubble is remained; meanwhile, the test liquid consumption is reduced; the test accuracy is improved; the arrangement of an on-off switch rubber plug and a sealing film used for covering a passage switch rubber plug on the test card main body is not needed; the air leakage problem is avoided; the part number is reduced; the production is convenient; the product rejection rate is reduced.

The invention discloses a blood gas analysis instrument which comprises a detection analysis main board for detecting and analyzing a blood sample and further comprises a bearing seat provided with a limiting sliding groove for enabling a test card to directionally slide, and a pressurizing assembly, a top heating limiting assembly, a bottom heating limiting assembly, a pushing assembly and a driving assembly arranged on the bearing seat. The pressurizing assembly and the top heating limiting assembly are located above the limiting sliding groove, and the bottom heating limiting assembly and the pushing assembly are located below the limiting sliding groove; the pressurizing assembly, the top heating limiting assembly, the pushing assembly and the bottom heating limiting assembly are sequentially arranged from top to bottom; the pressurizing assembly is used for extruding a gas storage area of the test card; the top heating limiting assembly is used for limiting and heating the top of the test card; and the bottom heating limiting assembly is used for limiting and heating the bottom of the test card. The blood gas analyzer is mainly used for detecting and analyzing a blood sample, and has the advantages of good detection effect and high accuracy.

The invention discloses a blood gas analyzer, which is characterized by comprising a buzzer, a liquid crystal display screen, a control panel, a control button, an ARM processor, a digital analog converter, an amplifier, a blood gas detecting zone, a protecting outer shell, a universal wheel, a damping spring, a supporting bracket, a conveyer and a printing outlet. The blood gas analyzer is simplein structure, convenient to dismount, high in detecting precision, scientific and reasonable in structure, convenient and high-efficient to use. Through the blood gas detecting zone, the pH value, partial pressure of carbon dioxide, oxygen partial pressure and other information in patient's artery can be detected, and the information is fed back to the liquid crystal display screen; both sides ofthe gas blood detecting silo are provided with coolant, thus internal temperature of the gas blood detecting silo is maintained under a low-temperature constant state, the accuracy of the blood gas detection is improved; the universal wheel is convenient to move, the supporting bracket design can guarantee the stability of the blood gas analyzer; the conveyer realizes the automatic loading, reduces the labor intensity of a medical staff and improves the gas blood detecting efficiency.

The invention provides a blood gas biochemical analyzer, and belongs to the technical field of medical instruments. The blood gas biochemical analyzer comprises a blood gas analyzer body and a test card, wherein the test card is matched with the blood gas biochemical analyzer body for use; the blood gas biochemical analyzer body comprises a shell, a test card base assembly, a signal acquisition assembly, a heat dissipation system assembly, a movement assembly and a main control board. A decorative cover and a main control board are arranged on the shell; the test card base assembly is installed in the shell, a base is arranged on the test card base assembly, and a test card hand feeling assembly and a card insertion in-place judgment assembly are arranged on the base; the signal acquisition assembly is mounted on the test card base assembly, a signal board PCBA is arranged on the signal acquisition assembly, and a probe is welded on the signal board PCBA. The operation assembly is mounted above the signal acquisition assembly; the heat dissipation system assembly is installed in the shell. According to the invention, the temperature is accurately controlled, and signal acquisition and related electric signals are fully protected and shielded, so that the test accuracy is higher.

A gas tension balancing device for calibration tests of a blood-gas analyzer is disclosed. The structure of the device is mainly composed of a three-stage injector and a heater. The three-stage injector has three constitutional units: an injector first-stage tube unit, an injector second-stage unit and an injector third-stage tube unit. The heater has two constitutional parts: a heating furnace and a temperature controller. Further, the three-stage injector is directly inserted into a three-stage injector heating trough of the heating furnace, and is heated by an external heating sheet and aninternal heating rod of the heating furnace. The invention aims to provide a method and a device which meet relevant requirements prescribed by the national metrological verification regulations of the People's Republic of China JJG 553-1988 ''Testing Regulations for Blood Gas Acid and Alkali Analyzers'' and are used for transferring uncontaminated tension-balanced gas-liquid samples to use places.

The invention discloses an intelligent blood gas analysis system and method in wireless transmission. The system comprises a blood gas analyzer, multiple auditing ends and printing equipment, whereinthe blood gas analyzer comprises a processor and a blood gas detection module; the blood gas analysis module is used for detecting a blood sample, and transmitting a blood gas detection result to theprocessor; the processor comprises a blood gas analysis module for performing analysis according to a blood gas detection result returned by the blood gas detection module, and giving an initial bloodgas analysis result; a wireless transmission module for sending the blood gas detection result to each auditing end and receiving indication information returned by the auditing end, and sending theindication information returned by the auditing end to the printing equipment; and the printing equipment is used for printing an auditing end returning result received by the processor. Through real-time data transmission, the problem that the blood gas analysis on the patient cannot be processed by a doctor in real time due to long distance is solved.

The invention discloses a process control system of a blood gas analyzer based on one master and multiple slaves. The process control system comprises a main board and a sample injecting needle control board, a turnplate control board, a suction pump control board, a printing control board, a keyboard control board and a signal conditioning and converting board which are connected with the main board, wherein the signal conditioning and converting board is connected with an output end of a signal acquiring electrode on a sample tank; the signal conditioning and converting board receives an output signal of the signal acquiring electrode, processes and converts the signals, and sends the signal to the main board; and the main board calculates a PO2 (oxygen partial pressure) value according to the received signal. According to specific subtasks in the system, microcontrollers with different performance are selected as the slaves to manage individual components, and a high-performance microcontroller is selected as a master to manage the multiple slaves so as to form the one-master and multi-slave system, thereby playing the performance of the microcontrollers, improving the performance and the flexibility of the blood gas analyzer and reducing the cost.

The invention belongs to the technical field of medical blood gas biochemical detection equipment, and relates to a blood gas analyzer micro-fluidic chip and a matching device thereof, the blood gas analyzer micro-fluidic chip comprises a sampling needle, an operation handle, a micro-fluidic chip assembly, a peristaltic pump rotating wheel, a pump pipe and a transfusion interface, and a liquid path system for sample transmission, measurement, calibration and flushing of an analyzer can be formed; wherein the micro-fluidic chip assembly consists of a micro-fluidic module shell, a micro-fluidic module liquid circuit board, a micro-fluidic sensor board, a micro-fluidic circuit board and an output signal interface component of the micro-fluidic circuit board; the maximum outer contour lengths and widths of the rear three components are the same, and the three components are respectively and tightly mounted in the micro-fluidic module shell in sequence; electronic signals transmitted from each sensor on the microfluidic sensor plate are transmitted to special analog electronic equipment in the analyzer through an output signal connector; the device can be applied to a blood gas analyzer, so that the device is smaller and lighter, and sample and reagent introduction and transmission and detection steps are minimized and simplified.

A medical tested object auto-ejection structure comprises a detection instrument and a tested object (1). An insertion port is formed in the detection instrument. When the tested object (1) is inserted in the instrument through the insertion port, the bottom end of the tested object (1) presses a bulge (21) used for rebounding, and a raised step (11) arranged on the surface of one side of the tested object (1) is locked on a clamping buckle (31) arranged at a position corresponding to the step on the instrument simultaneously, and after a test is finished, the instrument releases the locking of the clamping buckle (31) for the tested object (1) by a transmission device, and the tested object (1) is ejected from the instrument in time under the action of the bulge (21) used for rebounding, thus solving the problem of forgetting to pull the tested object out or inability to pull it out in time, and improving the reliability of the product.

The invention discloses a production method of a multi-level quality control substance. The production method comprises the following steps: 1, emulsifying one of perfluorotributylamine, perfluorotripropylamine and perfluorodecalin as a matrix; 2, putting a prepared horizontal quality control liquid into a proper amount of fluorocarbon emulsion matrix to obtain a quality control liquid; 3, sealing the quality control liquid, placing the sealed quality control liquid in a water bath kettle at 30-39 DEG C for 10-30 min, and carrying out ventilation replacement through a steel gas cylinder with a fixed proportion; and 4, bottling and sealing the quality control liquid. The invention further discloses a traceability calibration method of the blood gas analyzer. According to the invention, the fluorocarbon emulsion is used as the matrix, so that the interference of a detection liquid path on oxygen partial pressure and carbon dioxide partial pressure is effectively avoided; horizontal quality control gas-liquid phase balance is thorough, and measurement errors are avoided; and reference calibration data of the hematocrit specific volume can be effectively simulated, and the accuracy and effectiveness of the traceability calibration method can be realized.

Disclosed is a blood gas analyzer, comprising a needle valve (101) situated in a sampling frame, a sample box (2) connected to the needle valve, a first pump body (4) connected to the sample box, a waste liquid bag (7) connected to the first pump body, a liquid detector (18) connected to the needle valve and a second pump body (5), a third electromagnetic valve (11) connected to the liquid detector, a first electromagnetic valve (8) connected to the second pump body, and a third pump body (6) connected to the needle valve and the waste liquid bag, wherein in the sample box, one end of a front detector (201) is connected to the needle valve and the other end is successively connected to a detection membrane tube (202) and a rear detector (203), and the rear detector is connected to the first pump body; the preceding components are connected to each other through flow tubes (3); a memory device (205) is connected to the detection membrane tube via electrodes (204); and both the first electromagnetic valve (8) and a second electromagnetic valve (9) are provided with air inlets. By means of the calibration of a liquid instead of the prior art method of mixed calibration of a gas and liquid, faults caused by the liquid entering an air path can be avoided, and the reliability of the instrument is improved.

The invention discloses a multi-doctor terminal intelligent blood gas analysis method and system. The method and system can comprise a blood gas analyzer used for sending a blood gas analysis result to a plurality of doctor terminals; a plurality of doctors receive the blood gas analysis result from corresponding doctor terminals, wherein one of the doctors starts processing while the doctor terminals of other doctors automatically mark the blood gas treatment result to be completed, and wait for receiving a next blood gas analysis result; after the doctor starts processing, the doctor terminal returns the processing suggestion to the blood gas analyzer; the blood gas analyzer is used for carrying out automatic printing on the received processing suggestion; and a nurse is used for carrying out medication according to the printed processing suggestion. By means of the multi-terminal combined blood gas analyzer, diseases of patients can be rapidly and timely handled, so that lives of the patients are rescued within the shortest time.

Point-of-care medical analyzers, such as blood-gas analyzers, indicate a wide range of medical conditions and such analyses have, thus, found widespread use in medical practice. However, such point-of-care medical analyzers require frequent reagent replenishment. Organising for the replacement of reagents may be difficult, and is often undesirable to store large amount of reagent at a particular point-of-care. Accordingly, the present application describes an apparatus for generating predicted consumable state data of a point-of-care medical analyzer, comprising an input unit and a processingunit. The input unit is configured to receive initial consumable state data of a point-of-care medical analyzer defining an initial amount of a point-of-care medical analyzer consumable present in thepoint-of-care medical analyzer, and an analyzer identifier at a first time index. The input unit is configured to receive a second time index. The processing unit is configured to generate predictedconsumable state data defining an amount of the point-of-care medical analyzer consumable predicted to be present in the point-of-care medical analyzer at the second time index using a predicted consumable depletion model selected using at least the analyzer identifier and the initial consumable state data. The predicted consumable depletion model comprises (i) a consumable model of the point-of-care medical analyzer defining a consumable depletion rate of the point-of-care medical analyzer consumable in the point-of-care medical analyzer for a test, and (ii) a point-of-care medical analyzer use model defining an occurrence rate of the test. The predicted consumable state data is generated by the processing unit based on an aggregation of the initial amount of a point-of-care medical analyzer consumable present in the point-of-care medical analyzer, and the outputs of at least the consumable model and the point-of-care medical analyzer use model between the first time index and the second time index.

The invention discloses a standardized measurement method for blood physiological indexes of shellfish. By collecting blood of shellfish with a syringe and using a blood gas analyzer, the blood physiological indexes of shellfish are analyzed efficiently, quickly, with high throughput and with wide indexes. , It only takes about 3 to 5 minutes to measure each sample. And according to this method, by measuring a large number of scallops from different sources, different strains, and different shellfish ages, a standard reference value of blood physiological indicators of scallops can be provided, which can provide a basis for evaluating the physiological health status of shellfish. The invention quickly detects the blood physiological indexes of the shellfish blood, and judges the growth and life state and physiological activity of the shellfish through various indexes, and provides a feasible solution for fast, rapid and high-throughput sample measurement.

The invention discloses a disposable blood collection tube for blood gas analysis. The disposable blood collection tube comprises a sample storage device, a core rod, a needle head, a hollow needle sleeve, a sealant pouring needle sleeve, and a dual-purpose cap cover, wherein an additive is arranged in the sample storage device, a needle head fixing tube is arranged at the initial end of the sample storage device, and a handle is arranged at the tail end of the sample storage device; the core rod is arranged in an inner cavity of the sample storage device, a piston is arranged at the initial end of the core rod and is sheathed into the inner cavity of the sample storage device, and a press handle is arranged at the tail end of the core rod; the hollow needle sleeve and the sealant pouring needle sleeve are sheathed onto the needle head, and an inert glue is arranged in the sealant pouring needle sleeve; the dual-purpose cap cover is sheathed onto the initial end of the sample storage device, and can also be sheathed onto the press handle; a plug is arranged at the bottom end of the inner cavity of the dual-purpose cap cover and corresponds to the end port of the needle head fixing tube. The disposable blood collection tube has the advantages that the blood collection tube is simultaneously suitable for collecting blood of arteries and veins; the cost of a patient is reduced; the sealing property is strong, and the accuracy of detection result is higher; the operability is good, and the operation time is shortened; the one-time puncturing success rate is high.