Portable blood biochemical detection device

CN122893944APending Publication Date: 2026-10-13延安市人民医院
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Patent Information

Application Number
CN202511233999.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-01
Publication Date
2026-10-13

AI Technical Summary

Technical Problem

[0005]本发明的目的在于提供一种便携式血生化检测装置,以解决上述背景技术提出的目前市场上的血生化检测装置由于常用的全自动生化分析仪体积较大、重量较重,一般固定安装在医院的实验科室中,需要患者频繁前往医院进行检测,极不方便;检测仪器较为复杂,操作门槛较高,只能有专业人员才能进行操作;仪器检测程序一般为固定设定,对程序进行更改需要多方权限配合,导致检测的灵活性不够;检测结果需要经过长时间等待,难以满足即时检测的需求,增加了患者等待的时间和经济成本,也不利于患者对自身健康状况的实时了解和管理的问题

Benefits of technology

[0018]与现有技术相比,本发明的有益效果是:该种便携式血生化检测装置,结构小巧紧凑,方便随身携带,无需频繁前往医院,增加了检测的便捷性;操作简便,非专业人员也能轻松操作,减少了对专业人员的依赖;能够进行针对性的某一项或某几项的生化指标检测,增加了血生化检测的灵活性与准确性;检测结果即时显示在显示屏上,从而节约了患者进行血生化检测的等待时间成本,有利于患者对自身健康状况的实时了解和管理,具体内容如下:1、方便携带:此装置的结构小巧紧凑,方便随身携带,使得患者无需频繁前往医院,增加了检测的便捷性。

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Abstract

The application discloses a portable blood biochemical detection device and belongs to the technical field of blood biochemical detection. The device comprises a shell body. The inside of the shell body is divided into four medicament storage cavities by a partition plate. A push rod, a receiving assembly and an embedded needle cylinder are sequentially sleeved and slid on the inner side of the shell body. A limiting assembly is further arranged on the top of the shell body. A display screen is arranged on the outer end wall of the shell body. The device is small in structure, compact in size and convenient to carry. The device does not need to frequently go to a hospital, and the convenience of detection is increased. The device is easy to operate, and non-professionals can easily operate the device, and the dependence on professionals is reduced. The device can detect one or several biochemical indexes, and the flexibility and accuracy of blood biochemical detection are increased. The detection result is displayed on the display screen in real time, the time and economic cost of patients for detection waiting are saved, and the real-time understanding and management of the health status of the patients are facilitated.
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Description

Technical Field

[0001] This invention relates to the field of blood biochemistry detection technology, specifically a portable blood biochemistry detection device. Background Technology

[0002] Blood biochemistry testing is an important medical testing method in clinical diagnosis and health assessment. It reflects the functional status, metabolic status and any abnormal pathological changes of the internal organs by qualitatively and quantitatively analyzing various biochemical substances in the blood. It plays a vital role in clinical diagnosis, disease monitoring and health management. Blood biochemistry testing devices are required when performing blood biochemistry tests.

[0003] Existing blood biochemistry testing devices have the following drawbacks: Commonly used fully automated biochemistry analyzers are large and heavy, typically installed in hospital laboratories, requiring patients to frequently visit the hospital for testing, which is extremely inconvenient; the instruments are complex, with a high operational threshold, requiring only qualified personnel to operate them; the instrument programs are generally set to detect four or six fixed biochemical indicators, such as blood glucose, blood lipids, liver function, and kidney function, and modifications require multi-party authorization, resulting in insufficient testing flexibility; the test results need to be summarized, organized, and categorized by the instrument terminal before being printed out for patients to view, leading to long testing times, failing to meet the demand for immediate testing, increasing patients' waiting time and economic costs, and hindering patients' real-time understanding and management of their health status.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on existing equipment. Therefore, we have proposed a portable blood biochemistry testing device that can effectively solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a portable blood biochemistry testing device to address the problems mentioned in the background art. Currently available blood biochemistry testing devices are characterized by their large size and weight of commonly used fully automated biochemistry analyzers, which are typically fixed in hospital laboratories, requiring patients to frequently visit the hospital for testing, causing significant inconvenience. Furthermore, the instruments are complex, have high operational barriers, and can only be operated by qualified professionals. The instrument testing programs are generally fixed, and modifications require multiple parties to coordinate, resulting in insufficient testing flexibility. Additionally, test results require long waiting times, failing to meet the demand for immediate testing, increasing patient waiting time and economic costs, and hindering patients' real-time understanding and management of their health status.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable blood biochemistry testing device, comprising: an outer shell, wherein the bottom of the outer shell is provided with an opening, and the bottom end of the outer shell is divided into four reagent storage chambers by four partitions, a push rod is slidably sleeved on the middle of the inner side of the outer shell, and a sterile cotton is snapped into the bottom of the inner side of the outer shell.

[0007] A built-in syringe is slidably sleeved on the inner middle of the push rod. A suction rod is slidably connected to the top inner side of the built-in syringe, and a needle is fixedly connected to the bottom end of the built-in syringe. The built-in syringe is held at a certain height inside the push rod by a receiving component. A limiting component is also provided on the top of the outer shell to limit the downward push rod and the built-in syringe to a certain height.

[0008] The built-in syringe, push rod, and drug storage cavity have four first through holes, second through holes, and third through holes axially distributed on their bottom side walls, respectively. The four sets of first through holes, second through holes, and third through holes correspond to four drug storage cavities, and their opening heights decrease sequentially. The third through hole is sealed by a sealing component.

[0009] The outer wall of the drug storage cavity is embedded with a detection and analysis module, and the outer end wall of the outer shell is equipped with a display screen for displaying the detection results.

[0010] Preferably, the bottom opening of the outer casing has a downwardly narrowing structure, and the bottom end of the push rod is formed with a truncated cone structure, the slope of which matches the narrowing slope of the bottom opening of the outer casing.

[0011] Preferably, the outer wall of the built-in syringe and the inner wall of the push rod, as well as the outer wall of the top of the push rod and the inner wall of the top of the outer shell, are respectively formed with matching protrusions and grooves.

[0012] Preferably, the receiving component includes a first spring fixedly connected to the inner wall of the bottom end of the push rod, and a load-bearing plate fixedly connected to the top end of the first spring. The built-in syringe is supported above the load-bearing plate. A round hole is formed in the middle of the load-bearing plate, and the needle passes through the round hole, the middle of the first spring, and the bottom end of the push rod in sequence, and is suspended above the sterile cotton.

[0013] Preferably, the limiting component includes two sliding cavities symmetrically opened on the top of the outer shell. A sliding rod is slidably connected inside the sliding cavity, and a second spring is fixedly connected between the end wall of the sliding rod and the inner wall of the sliding cavity. The top two side walls of the push rod are symmetrically provided with limiting holes adapted to the sliding rod. A toggle part is fixedly connected to the top of the sliding rod, and the toggle part protrudes from the top of the outer shell.

[0014] Preferably, the sealing assembly includes a sealing rod that slides through the outer wall of the bottom end of each drug storage cavity, with the end of the sealing rod located inside the drug storage cavity being inserted and sealed inside the corresponding third through hole, and the other end of the sealing rod located outside the drug storage cavity being fixedly connected to a pull-stop block. A third spring is fixedly connected between the sealing rod and the inner wall of the drug storage cavity, and a protective sleeve is provided on the outside of the third spring. The protective sleeve consists of a sliding inner sleeve that is fixedly connected to the outer wall of the sealing rod and a fixed outer sleeve that is fixedly connected to the inner wall of the drug storage cavity.

[0015] Preferably, each of the drug storage cavities has an opening on the bottom outer wall for draining waste liquid or replenishing the drug, and the opening is sealed with a sealing plug.

[0016] Preferably, a charging module is installed on the inner end wall of the outer casing, and the charging port of the charging module is located on the outer end wall of the outer casing for connecting an external charging data cable to charge and power the display screen and the detection and analysis module embedded in the drug storage cavity.

[0017] Preferably, a top cover and a bottom cover are threadedly connected to the outer sides of the top and bottom ends of the outer shell, respectively. The top cover is used to protect the push rod and suction rod exposed at the top of the outer shell and to prevent them from shifting at will. The bottom cover is used to receive and protect the disinfectant cotton and to prevent it from falling out of the bottom opening of the outer shell or being contaminated.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: This portable blood biochemistry testing device has a small and compact structure, is easy to carry, and eliminates the need for frequent hospital visits, thus increasing the convenience of testing; it is easy to operate, even for non-professionals, reducing reliance on professionals; it can perform targeted testing of one or several biochemical indicators, increasing the flexibility and accuracy of blood biochemistry testing; the test results are displayed on the screen in real time, thereby saving patients the waiting time cost of blood biochemistry testing, which is beneficial for patients to understand and manage their own health status in real time. Specifically: 1. Easy to carry: The device has a small and compact structure, is easy to carry, and eliminates the need for frequent hospital visits, thus increasing the convenience of testing.

[0019] 2. Easy to operate: Simply rotate to remove the top and bottom covers for use. Disinfection, blood drawing, and testing are all very easy to perform, lowering the barrier to entry and allowing even non-professionals to operate with ease, thus reducing reliance on professionals.

[0020] 3. Flexible testing: By independently setting each group of drug storage chambers, through holes and sealing components, targeted testing of one or several biochemical indicators, such as blood glucose, blood lipids, liver function, kidney function, etc., can be performed, thereby increasing the flexibility and accuracy of the device's blood biochemical testing.

[0021] 4. Instant detection: The test results are displayed on the screen immediately, without the need for a long wait, meeting the need for instant detection and saving patients the waiting time cost of blood biochemistry tests. This is beneficial for patients to understand and manage their own health status in real time. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention with the outer cover removed; Figure 3 This is a frontal sectional view of the present invention. Figure 4 This is a top-view cross-sectional structural diagram of the present invention; Figure 5 This is a schematic diagram of the internal cross-sectional structure of the outer shell of the present invention; Figure 6 This is a schematic diagram of the push rod and the built-in syringe of the present invention; Figure 7 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 8 For the present invention Figure 3 Enlarged structural diagram at point B.

[0023] In the diagram: 1. Outer shell; 2. Partition; 3. Medicine storage cavity; 4. Push rod; 5. Sterilizing cotton; 6. Internal syringe; 7. Needle; 8. Suction rod; 9. First spring; 10. Load-bearing plate; 11. Sliding cavity; 12. Sliding insertion rod; 13. Second spring; 14. Limiting insertion hole; 15. Actuating part; 16. First through hole; 17. Second through hole; 18. Third through hole; 19. Sealing rod; 20. Pulling block; 21. Third spring; 22. Protective sleeve; 23. Sealing plug; 24. Display screen; 25. Charging module; 26. Top cover; 27. Bottom cover. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figures 1-4 as well as Figure 6As shown, existing blood biochemistry testing devices on the market are inconvenient because commonly used fully automated biochemistry analyzers are large and heavy, and are generally fixed in hospital laboratories, requiring patients to frequently visit the hospital for testing. The instruments are also complex, with high operational barriers, requiring only professional personnel to operate them. Furthermore, the instrument testing programs are generally fixed, and modifying them requires multiple parties with varying permissions, resulting in insufficient testing flexibility. Test results require long waiting times, failing to meet the demand for immediate testing, increasing patient waiting time and economic costs, and hindering patients' real-time understanding and management of their health. To address these technical problems, this embodiment discloses the following technical content: a portable blood biochemistry testing device, including a housing 1 with an opening at the bottom, and the interior of the bottom of the housing 1 is divided into four reagent storage chambers 3 by four partitions 2, for holding four different testing reagents (including anticoagulants, reagents that promote chemical reactions, etc.).

[0026] A push rod 4 is slidably fitted into the middle of the inner side of the outer shell 1, and a disinfectant cotton 5 is snapped into the bottom of the inner side of the outer shell 1. The bottom opening of the outer shell 1 has a downward narrowing structure, and the bottom end of the push rod 4 is formed into a truncated cone structure, and its slope matches the narrowing slope of the bottom opening of the outer shell 1. This structure can limit the distance of the push rod 4's up and down movement to prevent it from detaching from the outer shell 1.

[0027] Furthermore, a built-in syringe 6 is slidably sleeved on the inner middle of the push rod 4, and a suction rod 8 is slidably connected to the top inner side of the built-in syringe 6. A needle 7 is fixedly connected to the bottom end of the built-in syringe 6. Four first through holes 16, second through holes 17 and third through holes 18 are respectively opened on the bottom side wall of the built-in syringe 6, the push rod 4 and the drug storage cavity 3. The four sets of first through holes 16, second through holes 17 and third through holes 18 correspond to the four drug storage cavities 3 respectively, and the opening height decreases sequentially. The third through hole 18 is sealed by a sealing component.

[0028] Specifically, the sealing assembly includes a sealing rod 19 that slides through the bottom outer wall of each drug storage cavity 3. The end of the sealing rod 19 located inside the drug storage cavity 3 is inserted and sealed inside the corresponding third through hole 18. The other end of the sealing rod 19 located outside the drug storage cavity 3 is fixedly connected to a pull-stop block 20. A third spring 21 is fixedly connected between the sealing rod 19 and the inner wall of the drug storage cavity 3. By tightly inserting the sealing rod 19 into the third through hole 18, blood can be prevented from overflowing into the inside of the drug storage cavity 3 through the three through holes during the blood drawing process.

[0029] Furthermore, a protective sleeve 22 is provided on the outer side of the third spring 21. The protective sleeve 22 consists of a sliding inner sleeve that is fixedly connected to the outer wall of the sealing rod 19 and a fixed outer sleeve that is fixedly connected to the inner wall of the drug storage cavity 3. By setting the protective sleeve 22, the third spring 21 can be sealed and protected, separating it from the drug contained in the drug storage cavity 3. This prevents the third spring 21 from being corroded and rusted by the drug, which would reduce its elasticity and affect the tightness of the insertion of the sealing rod 19 into the third through hole 18, or the drug solution from being contaminated and affecting the accuracy of the blood test results.

[0030] The outer wall of the built-in syringe 6 and the inner wall of the push rod 4, as well as the outer wall of the top of the push rod 4 and the inner wall of the top of the outer shell 1, are respectively formed with matching protrusions and grooves. These are used to axially limit the relative sliding of the built-in syringe 6 and the push rod 4, and the push rod 4 and the outer shell 1, so that each set of first through holes 16, second through holes 17 and third through holes 18 can always be kept on the same vertical line and can overlap after sliding down through the push rod 4 and the built-in syringe 6, thereby allowing blood to flow into each drug storage cavity 3 and mix with the drug for detection.

[0031] Meanwhile, a detection and analysis module is embedded in the outer wall of the drug storage cavity 3, and a display screen 24 for displaying test results is installed on the outer end wall of the outer shell 1. A charging module 25 is also installed on the inner end wall of the outer shell 1, and the charging port of the charging module 25 is located on the outer end wall of the outer shell 1 for connecting an external charging data cable to charge and power the display screen 24 and the detection and analysis module embedded in the drug storage cavity 3, so as to maintain normal operation when the device is carried out. The control terminal of the display screen 24 can store the test data within one month, so that patients can retrieve the data at any time. It can also perform coarse calculations on the data to summarize the health status of the corresponding organs and parts of the data, so as to help patients understand their own condition.

[0032] When using it, first press down the push rod 4 to push the disinfectant cotton 5 down until it is exposed at the bottom opening of the outer shell 1 and locked in place. At this time, the patient can use the disinfectant cotton 5 to wipe the skin of the area to be drawn for disinfection. Then, continue to press down the push rod 4 to push the disinfectant cotton 5 out of the outer shell 1 and discard it.

[0033] After the disinfectant cotton 5 is squeezed out and discarded, press down on the suction rod 8 to move the built-in syringe 6 downward, so that the needle 7 moves down to the bottom opening of the outer shell 1. At this time, the patient can insert the needle 7 into the disinfected skin and pull the suction rod 8 upward to make the blood flow into the built-in syringe 6, thus completing the blood drawing operation.

[0034] After blood is drawn, simply pull the plug 20 outward to dislodge the sealing rod 19 from the third through hole 18. The blood in the built-in syringe 6 can then enter the drug storage chamber 3 through the first through hole 16, the second through hole 17, and the third through hole 18 in sequence and mix with the drug solution. Then, the detection and analysis module embedded in the drug storage chamber 3 analyzes the composition of the mixed liquid after the reaction and transmits the analysis results to the display screen 24 in real time for the patient to view and read, so as to understand their own health status.

[0035] In addition, the independent setup of each group of drug storage chambers 3, through holes and sealing components allows for targeted detection of one or more biochemical indicators, such as blood glucose, blood lipids, liver function, kidney function, etc., to increase the flexibility and accuracy of the device's blood biochemical detection. The number of the above components can also be adjusted accordingly to achieve the detection of more biochemical indicators according to usage needs.

[0036] Example 2: The technical content disclosed in this example is a further improvement based on Example 1 described above, such as... Figure 3 , Figure 5 and Figure 7 As shown, this embodiment discloses the following technical content: the built-in syringe 6 is held at a certain height inside the push rod 4 by a receiving component. The receiving component includes a first spring 9 fixedly connected to the inner wall of the bottom end of the push rod 4, and a load-bearing plate 10 is fixedly connected to the top of the first spring 9. The built-in syringe 6 is supported above the load-bearing plate 10. A round hole is formed in the middle of the load-bearing plate 10, and the needle 7 passes through the round hole, the middle of the first spring 9, and the bottom end of the push rod 4 in sequence.

[0037] The combination of the first spring 9 and the load-bearing plate 10 keeps the built-in syringe 6 at a certain height, thereby suspending the needle 7 above the sterile cotton 5. This prevents the patient from being accidentally pricked by the needle 7 when wiping the skin with the sterile cotton 5. This structure also allows the built-in syringe 6, needle 7, and suction rod 8 to be easily removed from the top opening of the push rod 4, facilitating the cleaning, disinfection, and drying of the inside of the push rod 4. Then, a new built-in syringe 6, needle 7, and suction rod 8 are inserted from the top of the push rod 4, and a new sterile cotton 5 is inserted from the bottom opening of the outer shell 1 to prepare for the next blood drawing operation, ensuring the hygiene and cleanliness of the testing process and preventing cross-infection.

[0038] Furthermore, a limiting component is provided on the top of the outer shell 1 to limit the downward-pressing push rod 4 and the built-in syringe 6 to a certain height. Specifically, the limiting component includes two sliding cavities 11 symmetrically opened on the top of the outer shell 1. A sliding insert rod 12 is slidably connected inside the sliding cavity 11, and a second spring 13 is fixedly connected between the end wall of the sliding insert rod 12 and the inner wall of the sliding cavity 11. The top two side walls of the push rod 4 are symmetrically opened with limiting insertion holes 14 that are adapted to the sliding insert rod 12. A toggle part 15 is fixedly connected to the top of the sliding insert rod 12, and the toggle part 15 protrudes from the top of the outer shell 1.

[0039] When the push rod 4 is pressed down to expel the sterile cotton 5, the limiting insertion holes 14 on both sides move synchronously to overlap with the sliding insertion rod 12, and the second through hole 17 moves synchronously to overlap with the third through hole 18. The sliding insertion rod 12 will then be pushed outward by the rebound of the second spring 13 and inserted into the inner side of the limiting insertion hole 14 to fix the height of the push rod 4. When the built-in syringe 6 is pressed down to the point where the needle tip 7 protrudes from the bottom opening of the outer shell 1, the top of the built-in syringe 6 moves synchronously to below the sliding insertion rod 12, and the first through hole 16 moves synchronously to overlap with the second through hole. When the first through hole 16, the second through hole 17, and the third through hole 18 overlap simultaneously, the two sliding rods 12 will continue to move closer and be locked at the top of the built-in syringe 6 under the push of the second spring 13, thus limiting the upward movement of the built-in syringe 6. This allows the patient to smoothly pull up the suction rod 8 to perform the blood draw operation. After the test is completed, simply push the two actuating parts 15 outward to move the two sliding rods 12 synchronously into the sliding cavity 11, thereby releasing the limiting effect on the built-in syringe 6 and the push rod 4.

[0040] Furthermore, each reagent storage chamber 3 has an opening on its bottom outer wall for draining waste liquid or replenishing reagent, and a sealing plug 23 is sealed inside the opening to prevent leakage of the reagent liquid. After the test is completed, the sealing plug 23 is pulled out to expose the opening, the waste liquid is poured out, and the inside of the reagent storage chamber 3 is rinsed clean, disinfected and dried. Then the outer shell 1 is inverted and new reagent liquid is added to each reagent storage chamber 3 through the opening to prepare for the next test.

[0041] In addition, a top cover 26 and a bottom cover 27 are threaded onto the top and bottom outer sides of the outer casing 1, respectively. The top cover 26 is used to protect the push rod 4 and suction rod 8 exposed at the top of the outer casing 1 and to prevent them from shifting at will. The bottom cover 27 is used to receive and protect the disinfectant cotton 5, preventing it from falling out of the bottom opening of the outer casing 1 or being contaminated. This structure is small and compact, convenient to carry, and does not require frequent visits to the hospital. It can be used simply by rotating and removing the top cover 26 and the bottom cover 27, which is very simple to operate and lowers the threshold of operation. Even non-professionals can operate it easily, reducing the reliance on professionals. At the same time, the test results are displayed on the display screen 24 in real time without long waiting time, meeting the need for immediate testing. This saves patients time and economic costs of waiting for blood biochemistry tests and helps patients understand and manage their health status in real time.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable blood biochemistry testing device, comprising an outer casing (1), characterized in that, The bottom of the outer shell (1) is divided into four medicine storage cavities (3) by four partitions (2). The inner side of the outer shell (1) is fitted with a push rod (4), and the bottom of the outer shell (1) is fitted with a disinfectant cotton (5). The inner side of the push rod (4) is fitted with a built-in syringe (6) and a needle (7). The top of the built-in syringe (6) is slidably connected to a suction rod (8). The built-in syringe (6) is held at a certain height inside the push rod (4) by a receiving component. The top of the outer shell (1) is also provided with a limiting component to limit the downward push rod (4) and the built-in syringe (6) to a certain height. The built-in syringe (6), push rod (4) and drug storage cavity (3) are respectively provided with four first through holes (16), second through holes (17) and third through holes (18), and the four through holes correspond to the four drug storage cavities (3). The third through hole (18) is sealed by a sealing component. The outer wall of the drug storage cavity (3) is embedded with a detection and analysis module, and the outer end wall of the outer shell (1) is equipped with a display screen (24) for displaying the detection results.

2. The portable blood biochemistry detection device according to claim 1, characterized in that: The bottom opening of the outer shell (1) is a downward narrowing structure, and the bottom end of the push rod (4) is formed with a frustum structure, and its slope matches the narrowing slope of the bottom opening of the outer shell (1).

3. A portable blood biochemistry detection device according to claim 2, characterized in that: The outer wall of the built-in syringe (6) and the inner wall of the push rod (4), as well as the outer wall of the top of the push rod (4) and the inner wall of the top of the outer shell (1), are respectively formed with matching protrusions and grooves.

4. A portable blood biochemistry detection device according to claim 3, characterized in that: The receiving component includes a first spring (9) fixedly connected to the inner wall of the bottom end of the push rod (4), and a load-bearing plate (10) fixedly connected to the top end of the first spring (9), and a built-in syringe (6) supported above the load-bearing plate (10). A round hole is formed in the middle of the load-bearing plate (10), and the needle (7) passes through the round hole, the middle of the first spring (9) and the bottom end of the push rod (4) in sequence.

5. A portable blood biochemistry detection device according to claim 4, characterized in that: The limiting component includes two sliding cavities (11) symmetrically opened on the top of the outer shell (1). A sliding rod (12) is slidably connected inside the sliding cavity (11), and a second spring (13) is fixedly connected between the end wall of the sliding rod (12) and the inner wall of the sliding cavity (11). The top two sides of the push rod (4) are symmetrically provided with limiting holes (14) adapted to the sliding rod (12). The top of the sliding rod (12) is fixedly connected with a toggle part (15), and the toggle part (15) protrudes from the top of the outer shell (1).

6. A portable blood biochemistry detection device according to claim 1, characterized in that: The sealing assembly includes a sealing rod (19) that slides through the bottom outer wall of each drug storage cavity (3), and the end of the sealing rod (19) is inserted into and sealed inside the corresponding third through hole (18), and the other end of the sealing rod (19) is fixedly connected to a pull block (20). A third spring (21) is fixedly connected between the sealing rod (19) and the inner wall of the drug storage cavity (3), and a protective sleeve (22) is provided on the outside of the third spring (21), and the protective sleeve (22) is composed of a sliding inner sleeve and a fixed outer sleeve that are relatively sealed together.

7. A portable blood biochemistry detection device according to claim 6, characterized in that: Each of the drug storage cavities (3) has an opening on the bottom outer wall for draining waste liquid or replenishing drugs, and the opening is sealed with a sealing plug (23).

8. A portable blood biochemistry detection device according to claim 5, characterized in that: A charging module (25) is installed on the inner end wall of the outer shell (1), and the charging port of the charging module (25) is located on the outer end wall of the outer shell (1) for connecting an external charging data cable.

9. A portable blood biochemistry detection device according to claim 8, characterized in that: The top and bottom sides of the outer shell (1) are respectively threaded with a top cover (26) and a bottom cover (27). The top cover (26) is used to protect the push rod (4) and suction rod (8) exposed at the top of the outer shell (1), and the bottom cover (27) is used to receive and protect the disinfectant cotton (5).