Peripheral blood sample collection device

Abstract

The utility model provides a tip blood sample collecting device which comprises a sampling tube, the sampling tube comprises a tube body and a capillary tube, one end of the tube body is closed, the other end of the tube body is open, the capillary tube penetrates through the closed end of the tube body and is inserted into a cavity of the tube body, the sampling tube further comprises a boosting part, and a piston part of the boosting part is arranged in the cavity of the tube body. The peripheral side of the piston part is peripherally attached to the inner wall surface of the cavity of the tube body and is arranged in a sliding manner; a through hole is formed in the boosting piece in the axis direction of the capillary tube, the inner diameter of the through hole is larger than the outer diameter of the capillary tube, and the through hole and the capillary tube are oppositely arranged. The boosting piece is arranged on the sampling tube, the boosting piece moves towards the capillary tube by pressing the boosting piece, the space of the tube body is compressed, a blood sample sucked in the capillary tube can completely flow out, the sampling tube is combined with a matched sampling box for use, and the blood sample can be accurately dropped in the center of a blood sample collection card in a positioned mode. Therefore, errors of sample dropping at different positions are reduced, and the accuracy of blood sample collection is ensured.

Description

Technical Field

[0001] The utility model relates to a peripheral blood sample collecting device. Background Art

[0002] Dried Blood Spot (DBS) refers to dropping blood from the fingertips or heels of subjects on relevant sample collection cards, which are naturally dried at room temperature to form blood spots. Its application in the fields of medicine and health sciences has simplified the traditional blood collection and analysis process. In 1911, Ivar Bang, the father of modern clinical microchemistry, introduced a method of absorbing blood onto filter paper to form dried blood spots for the determination of glucose concentration. Guthrie and Susi reported the DBS analysis method for neonatal phenylketonuria in 1963, and the DBS method has since become popular in biological analysis. Venipuncture, as a traditional blood collection technique, is highly invasive, has high traumatic pain and a high risk of pathogen infection. In the process of collecting samples for clinical trials, its volunteer recruitment rate is low. Unlike the shortcomings of venipuncture, DBS blood collection technology is minimally invasive. Blood drops are collected on DBS card paper, and after drying and transportation, dried blood spots are extracted and analyzed in the laboratory. Since the DBS loaded with whole blood has been dried, it is less harmful to organisms. The proteins, pathogens and enzymes contained in the blood are inactivated on the card, and bacterial growth can be effectively prevented. The blood collected and dried on the DBS filter paper can be stored for at least 1 month, and its complement fixation ability has hardly deteriorated. The advantages of dried blood spot technology are low invasiveness and low blood sample requirements, making it a very useful sampling method for subjects. Compared with traditional blood collection technology, dried blood spot technology reduces the steps before sample detection and analysis (such as cold chain transportation, storage and centrifugation process), reduces transportation and storage costs, and improves detection and analysis efficiency.

[0003] Dried blood spot technology has many advantages: (1) less blood is required (the minimally invasive nature is especially important for children, women, the elderly, etc.); (2) the blood collection material supply is simple and low-cost; (3) the risk of sample contamination or hemolysis can be reduced; (4) the sample can be stored for a long time with almost no deterioration; (5) the sampling method is convenient and can be performed independently by medical staff or the subjects in strict accordance with the instructions.

[0004] In the prior art, during the collection of peripheral blood or fingertip blood, the blood sample in the capillary tube often fails to drip out completely or the blood sample in the capillary tube agglutinates for too long, resulting in the internal blood sample being unable to drip onto the blood sample collection card, thus affecting the accuracy of blood sample collection. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art and provide a peripheral blood sample collection device.

[0006] The utility model solves the above technical problems through the following technical solutions:

[0007] A peripheral blood sample collection device comprises a sampling tube, wherein the sampling tube comprises a tube body and a capillary tube, wherein one end of the tube body is closed and the other end is open, and the capillary tube passes through the closed end of the tube body and is inserted into the cavity of the tube body. The sampling tube also comprises a booster, wherein a piston portion of the booster is arranged in the cavity of the tube body, and the outer peripheral side of the piston portion is circumferentially fitted with the inner wall surface of the cavity of the tube body and can be slidably arranged; the booster is provided with a through hole arranged along the axial direction of the capillary tube, the inner diameter of the through hole is larger than the outer diameter of the capillary tube, and the through hole is arranged opposite to the capillary tube.

[0008] In the present solution, a booster is provided on the sampling tube, and the through hole of the booster can be blocked with a finger during operation so that the space where the capillary extends into the tube body becomes a relatively sealed environment. The booster is pressed to move the booster toward the capillary, and the space of the tube body where the capillary is located is compressed, so that the blood sample absorbed in the capillary can flow out completely. On the one hand, it can ensure that there is a sufficiently clear and quantitative blood sample on the blood sample collection card, and on the other hand, it can prevent the blood sample collected in the capillary from agglutinating and failing to drip out normally. When used in combination with a sampling box, the blood sample can be accurately positioned and dropped in the center of the blood sample collection card to reduce the error of dropping samples at different positions, thereby effectively ensuring the accuracy of blood sample collection.

[0009] Preferably, the peripheral blood sample collection device also includes a sampling box and a blood sample collection card, the sampling box is provided with a accommodating chamber and at least one placement chamber, the placement chamber is used to place the sampling tube; the accommodating chamber is located below the placement chamber and is connected to the placement chamber, the accommodating chamber is used to place the blood sample collection card, the blood sample collection card is provided with at least one sample adsorption area, and the sample adsorption area is arranged corresponding to the placement chamber.

[0010] In this solution, the above structure is adopted, and by setting up a matching sampling box and blood sample collection card, the blood sample in the blood collection tube can be quickly and accurately dripped onto the blood sample collection card, completing the blood sample collection work and improving the sampling efficiency.

[0011] Preferably, the side of the sampling box is provided with a groove extending inwardly in the horizontal direction, the groove forms the accommodating cavity, and the width of the accommodating cavity matches the width of the blood sample collection card;

[0012] And / or, the inner circumference of the placement cavity matches the outer shape of the tube body.

[0013] The above structure facilitates the insertion and removal of the blood sample collection card. The width of the accommodating cavity matches the width of the blood sample collection card so that the sample adsorption area of ​​the blood sample collection card and the capillary titration position of the sampling tube can quickly correspond to each other, thereby improving the blood sampling efficiency.

[0014] Preferably, there are a plurality of the placement cavities, and the plurality of placement cavities are spaced apart along the width direction of the sampling box.

[0015] In this solution, multiple placement cavities are set up, so that multiple blood samples can be collected from the same sampling object at the same time, avoiding the situation where a single blood sample sampling result is unqualified, which affects the accuracy of the final result detection and judgment or requires re-sampling. It can also avoid using multiple blood sample collection cards for a single sampling object, which may cause confusion with blood sample collection cards of other sampling objects.

[0016] Preferably, the placement cavity is arranged at an end away from the opening of the accommodating cavity.

[0017] The above structure can prevent medical personnel from accidentally touching the sample adsorption area of ​​the blood sample collection card when inserting the blood sample collection card, thereby causing the blood sample to be contaminated and affecting the test results.

[0018] Preferably, a positioning hole is provided at the bottom of the placement cavity, and the placement cavity is connected with the accommodating cavity through the positioning hole;

[0019] A positioning block is provided outside the cavity of the sampling tube at the outer peripheral side of the capillary tube, and the outer peripheral side of the positioning block matches the positioning hole.

[0020] In this solution, by setting a positioning hole at the bottom of the placement cavity and a positioning block on the sampling tube, when the sampling tube is placed in the placement cavity, the capillary can correspond to the sample adsorption area of ​​the blood sample collection card, so that the blood sample can be dripped into the predetermined area, thereby ensuring the effectiveness of the sampling.

[0021] Preferably, the capillary is arranged in the middle of the tube body, and when the blood sample collection card is arranged in the accommodating cavity, the capillary is facing the central part of the sample adsorption area. At present, in the process of collecting blood samples from peripheral blood or fingertip blood, since the users are not all professional medical staff, there are differences in operation, resulting in inaccurate drop position, which will bring great difficulty to the sampling of dry blood spots, introduce sampling errors, and have a great impact on the accuracy of the final test results.

[0022] Therefore, by dropping the blood sample accurately on the central part of the sample adsorption area of ​​the blood sample collection card sampling area through the capillary facing the central part of the sample adsorption area, the error caused by different personnel operations can be reduced, the accuracy can be improved, and the quantitative and accurate dropping operation of the peripheral blood sample collection device can be realized.

[0023] Preferably, the booster member includes a push rod and a piston, one end of the push rod is connected to the piston, and the other end of the push rod extends out of the tube body; the through hole is coaxially provided on the push rod and the piston.

[0024] In this solution, the above structure is adopted, and through holes are coaxially arranged on the push rod and the piston, so that the capillary can be normally connected with the outside world, ensuring that the capillary can siphon normally and realize the absorption of blood samples.

[0025] Preferably, the end portion of the push rod extending out of one end of the tube body has a pressing plane.

[0026] Preferably, the inner diameter of the through hole is in the range of 2.0-3.0 mm, the outer diameter of the capillary is 1.5 mm, and the inner diameter of the capillary is 1.15 mm.

[0027] The positive and progressive effect of the utility model is that the peripheral blood sample collection device of the utility model is provided with a booster on the sampling tube, and the through hole of the booster can be blocked by a finger during operation so that the space where the capillary extends into the tube body becomes a relatively sealed environment, and the booster is pressed to move the booster toward the capillary, and the space of the tube body where the capillary is located is compressed, so that the blood sample absorbed in the capillary can flow out completely, which can ensure that there are enough clear and quantitative blood samples on the blood sample collection card, and can avoid the blood sample collected in the capillary from agglutinating and being unable to drip out normally. And more importantly, by using the sampling tube in combination with the matching sampling box, the blood sample can be accurately positioned and dripped on the central part of the blood sample collection card to reduce the error of dripping samples at different positions, and effectively ensure the accuracy of blood sample collection. The peripheral blood sample collection device can provide quantitative collection of blood samples through capillaries, and accurately drip blood samples on the central part of the blood sample, which can simultaneously realize quantitative and positioning detection of blood samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the sampling tube in the embodiment of the utility model.

[0029] Figure 2 yes Figure 1 sectional view of .

[0030] Figure 3 It is a schematic diagram of the structure of the sampling box in the embodiment of the utility model.

[0031] Figure 4 yes Figure 3 Cross-sectional view of the sampling box along the width direction of the sampling box at the placement cavity

[0032] Figure 5 It is a schematic diagram of the cooperation between the sampling tube and the sampling box in the embodiment of the utility model.

[0033] Figure 6 It is a cross-sectional view of the sampling tube and the sampling box in the embodiment of the utility model when they are matched.

[0034] Figure 7 Schematic diagram of blood sample collection card for dropping samples at the central part and non-central part.

[0035] Figure 8 For Figure 7 Schematic diagram of the test results of sample 1 when the droplet degree test is carried out on the four sample adsorption areas in the two blood sample collection cards.

[0036] Fig. 9 For Figure 7 Schematic diagram of the test results of sample 2 when the droplet degree test was carried out on the four sample adsorption areas in the two blood sample collection cards.

[0037] Fig.10 For Figure 7 Schematic diagram of the test results of sample 3 when the droplet degree test of the four sample adsorption areas in the two blood sample collection cards is carried out.

[0038] Fig.11 For Figure 7 Schematic diagram of the test results of sample 4 when the droplet degree test of the four sample adsorption areas in the two blood sample collection cards is carried out.

[0039] Description of reference numerals:

[0040] Sampling tube 100

[0041] Tube body 110

[0042] Capillary 120

[0043] Capillary first end 120a

[0044] Capillary second end 120b

[0045] Booster 130

[0046] Piston 131

[0047] Push rod 132

[0048] Pressing plane 1321

[0049] Through hole 133

[0050] Positioning block 140

[0051] Sampling box 200

[0052] Placement cavity 210

[0053] Positioning hole 211

[0054] Accommodating chamber 220

[0055] Blood sample collection card 300 DETAILED DESCRIPTION

[0056] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0057] like Figure 1-2 As shown, a peripheral blood sample collection device of this embodiment includes a sampling tube 100, which includes a tube body 110 and a capillary tube 120. One end of the tube body 110 is closed, and the other end is open. The capillary tube 120 passes through the closed end of the tube body 110 and is inserted into the cavity of the tube body 110. The sampling tube 100 also includes a booster 130. The piston portion of the booster 130 is arranged in the cavity of the tube body 110. The outer peripheral side of the piston portion is circumferentially attached to the inner wall surface of the cavity of the tube body 110 and can be slidably arranged. The booster 130 is provided with a through hole 133 arranged along the axial direction of the capillary tube 120. The inner diameter of the through hole 133 is larger than the outer diameter of the capillary tube 120. The through hole 133 is arranged opposite to the capillary tube 120. By arranging the booster 130 on the sampling tube 100, the through hole 133 of the booster 130 can be blocked with a finger during operation so that the space where the capillary 120 extends into the tube body 110 becomes a relatively sealed environment. By pressing the booster 130 to move it toward the capillary 120, the space in the tube body 110 where the capillary 120 is located is compressed, thereby allowing the blood sample absorbed in the capillary 120 to flow out completely. On the one hand, it can ensure that there is a sufficiently clear and quantitative blood sample on the blood sample collection card, and on the other hand, it can prevent the blood sample collected in the capillary 120 from agglutinating and failing to drip out normally.

[0058] In this embodiment, the booster 130 includes a push rod 132 and a piston 131, one end of the push rod 132 is connected to the piston 131, and the other end of the push rod 132 extends out of the tube body 110. A through hole 133 is coaxially provided on the push rod 132 and the piston 131. The through hole 133 is coaxially provided on the push rod 132 and the piston 131, so that the capillary 120 can be normally connected with the outside world, ensuring that the capillary 120 can normally siphon and achieve the absorption of the blood sample.

[0059] The end of the push rod 132 extending out of the tube body 110 has a pressing flat surface. When blood is sucked through the sampling tube 100, first ensure that the through hole 133 is not blocked, put the second end 120b of the capillary into the blood to be sucked, and suck the blood through the siphon effect of the capillary 120. When the capillary 120 sucks too much blood, the blood seeps out from the first end 120a of the capillary and flows into the cavity of the tube body 110. When the collected blood is dripped onto the blood sample collection card, the thumb can be used to press the pressing flat surface 1321 of the push rod 132, and the thumb will block the through hole 133.

[0060] When designing the sampling tube 100 of the peripheral blood sample collection device of the present invention, the inner diameter range of the through hole 133 on the booster 130 is set to 2.0-3.0 mm. The outer diameter of the capillary 120 is 1.5 mm, and the inner diameter of the capillary 120 is 1.15 mm. The length of the capillary 120 can be set according to the sampling volume. For example, a length of 20 mm of the capillary 120 corresponds to a sampling volume of 20 μL. If a sampling volume of 40 μL is required, a capillary 120 of 40 mm in length is required.

[0061] Compared with the traditional syringe, the sampling tube 100 of the peripheral blood sample collection device of the utility model is designed to be hollow in the push rod 132 part of the booster 130 and connected to the cavity. The purpose of the hollow design is to accommodate the capillary 120 at the lower end to prevent the capillary 120 from being damaged. At the same time, the siphon effect of the capillary needs to be connected to the atmosphere, and both of them need to be hollow. With this design, the user directly uses the siphon effect of the capillary to take samples during use, and then puts the sampling tube into the groove of the sampling box to accommodate the sampling tube, and uses the finger to block the air hole at the upper end of the booster 130 and press down, and the sampled blood can be dripped into the central part of the predetermined circle of the blood sample collection card. The dripping position is accurate, the method is convenient, the time is short, and the speed is fast, which effectively avoids the blockage of the wall tube caused by blood coagulation due to too long residence time.

[0062] like Figure 3-6 As shown, the blood sample collection device also includes a sampling box 200 and a blood sample collection card 300. The sampling box 200 is provided with a receiving chamber 220 and at least one placement chamber 210. The placement chamber 210 is used to place the sampling tube 100. The receiving chamber 220 is located below the placement chamber 210 and is connected to the placement chamber 210. The receiving chamber 220 is used to place the blood sample collection card 300. The blood sample collection card 300 is provided with at least one sample adsorption area, and the sample adsorption area is arranged corresponding to the placement chamber 210. With the above structure, by setting the matching sampling box 200 and blood sample collection card 300, the blood sample in the blood sample collection tube can be quickly and accurately dripped onto the blood sample collection card 300, completing the blood sample collection work and improving the sampling efficiency. Among them, the blood sample collection card 300 can use Whatman No.903 filter paper.

[0063] like Figure 3-4 As shown, in this embodiment, the side of the sampling box 200 is provided with a groove extending inward in the horizontal direction, and the groove forms a receiving chamber 220, and the width of the receiving chamber 220 matches the width of the blood sample collection card 300. By adopting the above structure, it is convenient to put in and take out the blood sample collection card 300, and the width of the receiving chamber 220 matches the width of the blood sample collection card 300 so that the sample adsorption area of ​​the blood sample collection card 300 and the titration position of the capillary 120 of the sampling tube 100 can quickly correspond, thereby improving the sampling efficiency of blood.

[0064] There are multiple placement cavities 210, and the multiple placement cavities 210 are arranged at intervals along the width direction of the sampling box 200. By setting multiple placement cavities 210, multiple blood samples can be collected from the same sampling object at the same time, avoiding the occurrence of unqualified sampling results of a single blood sample, which affects the accuracy of the final result detection and judgment or requires re-sampling, and also avoiding the use of multiple blood sample collection cards 300 for a single sampling object, which leads to confusion with blood sample collection cards 300 of other sampling objects. In this embodiment, there are 4 placement cavities 210, and a maximum of 4 blood samples can be collected at one time. The number of placement cavities 210 can be set according to demand when producing the sampling box 200.

[0065] like Figure 3 As shown, the placement cavity 210 is disposed at one end away from the opening of the accommodating cavity 220. This prevents medical personnel from accidentally touching the sample adsorption area of ​​the blood sample collection card 300 when inserting the blood sample collection card 300, thereby contaminating the blood sample and affecting the test results.

[0066] like Figure 4 As shown, in this embodiment, a positioning hole 211 is provided at the bottom of the placement cavity 210, and the placement cavity 210 is connected with the accommodating cavity 220 through the positioning hole 211; a positioning block 140 is provided outside the cavity of the sampling tube 100 at the outer peripheral side of the capillary tube 120, and the outer peripheral side of the positioning block 140 matches the positioning hole 211. By providing the positioning hole 211 at the bottom of the placement cavity 210 and the positioning block 140 on the sampling tube 100, when the sampling tube 100 is placed in the placement cavity 210, the positioning block 140 of the sampling tube 100 is just positioned in the positioning hole 211, so that the capillary tube 120 can correspond to the sample adsorption area of ​​the blood sample collection card 300, and the blood sample can be dripped in the predetermined area, thereby ensuring the accuracy and effectiveness of the sampling.

[0067] The capillary 120 is arranged in the middle of the tube body 110. When the blood sample collection card 300 is arranged in the accommodating chamber 220, the capillary 120 is directly opposite to the central part of the sample adsorption area. At present, in the process of collecting blood samples from peripheral blood or fingertip blood, since the users are not all professional medical staff, there are differences in operation, resulting in inaccurate sample drop position, which will bring great difficulty to the sampling of dry blood spots, introduce sampling errors, and have a great impact on the accuracy of the final test results. Therefore, by having the capillary 120 directly facing the central part of the sample adsorption area, the blood sample is accurately dropped in the central part of the sample adsorption area of ​​the blood sample collection card 300 sampling area, which can reduce the errors caused by different personnel operations, improve accuracy, and realize the quantitative and accurate sample drop operation of the peripheral blood sample collection device. By using the sampling tube 100 in combination with the matching sampling box 200, the blood sample can be accurately positioned and dropped in the central part of the blood sample collection card 300 to reduce the errors of dropping samples at different positions, effectively ensuring the accuracy of blood sample collection.

[0068] See also Figure 7 and Figure 8-11 ,in Figure 7 Schematic diagram of blood sample collection card for dripping samples at the central part and dripping samples at the non-central part. Figure 8-11 For Figure 7 Schematic diagram of dripping degree detection for dripping test in four sample adsorption areas of two blood sample collection cards (wherein: A represents the dripping of the central part; B represents the repeated test of the dripping of the central part; C represents the dripping of the non-central part). By using the existing peripheral blood sample collection device to titrate different markers, the average bias of the dripping degree of each marker is shown in Table 1 below:

[0069] Table 1 Average bias of each marker drop sample

[0070] Markers Central part drop sample retest deviation (%) Non-central drop deviation (%) TM4SF1 4.5％ 17.3％ p53 6.2％ 19.0％ pGP9.5 2.3％ 16.1％ SOX2 4.5％ 19.5％ BMI1 1.9％ 16.8％ FXR1 3.1％ 21.1％ MAGE A4 3.8％ 15.5％ ESO-1 4.2％ 17.8％ ZNF573 4.4％ 18.0％ BRAF 4.5％ 16.3％ Mean 3.9％ 17.7％

[0071] Combining the above table and Figure 7 and Figure 8-11 It can be seen that when the dried blood spot sample is dripped on the center of the filter paper with the established tooth mark circle, the retest result has a smaller deviation, averaging 3.9%, which is significantly different from the 17.7% of the sample dripped on the non-central part. Therefore, each inaccurate dripping may introduce a large error, causing great uncertainty in the final diagnosis result, further illustrating the necessity of accurate dripping, ensuring that each drop is in the center of the established tooth mark circle. At the same time, blood drips onto the dried blood spot filter paper card, and under the action of surface tension and adsorption force, it diffuses in all directions. Although grooves are provided to limit the range of diffusion, when the amount of blood reaches a certain amount, a considerable amount of overflow is still inevitable, so it is necessary to ensure that the dripping position is accurate.

[0072] In order to reduce or avoid such errors, it is necessary to improve the method of dripping samples to achieve accurate and quick results. The peripheral blood sample collection device of the utility model can accurately drip blood samples into the center of a predetermined filter paper circle at a fixed position, without the need to manually determine the position before dripping the sample, thereby ensuring the accuracy of the dripping position. The operator only needs to block the air hole of the booster with his finger and press down to complete the dripping of the sample. This process is quick and convenient.

[0073] In this embodiment, the inner circumference of the placement cavity 210 matches the outer shape of the tube body 110 , so as to prevent the sampling tube 100 from shaking in the placement cavity 210 .

[0074] In some other embodiments, the sampling box 200 can be formed by folding cardboard, and the upper surface of the sampling box 200 and the upper surface of the accommodating cavity 220 are both formed by cardboard. The cardboard forming the upper surface of the sampling box 200 has a through hole 133 for the tube body 110 of the sampling tube 100 to pass through, and the upper surface cardboard forming the accommodating cavity 220 is provided with a positioning hole 211, that is, the circumference of the placement cavity 210 is not a closed structure, but a space between two layers of cardboard.

[0075] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A peripheral blood sample collection device, comprising a sampling tube, wherein the sampling tube comprises a tube body and a capillary tube, wherein one end of the tube body is closed and the other end is open, and the capillary tube passes through the closed end of the tube body and is inserted into the cavity of the tube body, wherein: The sampling tube further comprises a booster, wherein the piston portion of the booster is disposed in the cavity of the tube body, and the outer peripheral side of the piston portion is circumferentially fitted with the inner wall surface of the cavity of the tube body and is slidably disposed; The booster is provided with a through hole arranged along the axial direction of the capillary tube, the inner diameter of the through hole is larger than the outer diameter of the capillary tube, and the through hole is arranged opposite to the capillary tube.

2. The peripheral blood sampling device according to claim 1, characterized in that: The peripheral blood sample collection device also includes a sampling box and a blood sample collection card. The sampling box is provided with a receiving cavity and at least one placement cavity, and the placement cavity is used to place the sampling tube; The accommodating cavity is located below the placement cavity and communicated with the placement cavity. The accommodating cavity is used to place the blood sample collection card. The blood sample collection card is provided with at least one sample adsorption area, and the sample adsorption area is arranged corresponding to the placement cavity.

3. The peripheral blood sampling device according to claim 2, characterized in that: The side of the sampling box is provided with a groove extending inwardly in the horizontal direction, the groove forms the accommodating cavity, and the width of the accommodating cavity matches the width of the blood sample collection card; And / or, the inner circumference of the placement cavity matches the outer shape of the tube body.

4. The peripheral blood sampling device according to claim 3, characterized in that: There are multiple placement cavities, and the multiple placement cavities are arranged at intervals along the width direction of the sampling box.

5. The peripheral blood sampling device according to claim 4, characterized in that: The placement cavity is arranged at one end away from the opening of the accommodating cavity.

6. The peripheral blood sampling device according to claim 2, characterized in that: A positioning hole is provided at the bottom of the placement cavity, and the placement cavity is connected with the accommodating cavity through the positioning hole; A positioning block is provided outside the cavity of the sampling tube at the outer peripheral side of the capillary tube, and the outer peripheral side of the positioning block matches the positioning hole.

7. The peripheral blood sampling device according to claim 6, characterized in that: The capillary is arranged in the middle of the tube body. When the blood sample collection card is arranged in the containing cavity, the capillary is directly opposite to the central part of the sample adsorption area.

8. The peripheral blood sampling device according to claim 1, characterized in that: The booster comprises a push rod and a piston, one end of the push rod is connected to the piston, and the other end of the push rod extends out of the tube body; The through hole is coaxially arranged on the push rod and the piston.

9. The peripheral blood sampling device according to claim 8, characterized in that: The end of the push rod extending out of one end of the tube body has a pressing plane.

10. The peripheral blood sampling device according to any one of claims 1 to 9, characterized in that: The inner diameter of the through hole is in the range of 2.0-3.0 mm, the outer diameter of the capillary is 1.5 mm, and the inner diameter of the capillary is 1.15 mm.

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