Blood sampling device for anemia patient

By designing suitable storage and delivery components, the problem of blood sample deterioration risk during storage was solved, enabling rapid and safe sample storage, reducing the risk of deterioration and improving storage efficiency.

CN121359986APending Publication Date: 2026-01-20成都市双流区第一人民医院
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Patent Information

Application Number
CN202411978109.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2026-01-20

AI Technical Summary

Technical Problem

In existing technologies, blood samples are at increased risk of deterioration during the process from collection to storage in a specific temperature environment due to prolonged exposure to room temperature.

Method used

A blood sampling device for patients with anemia has been designed, including a storage chamber and a storage component. The storage component consists of a storage tray and a limiting ring. The limiting ring is composed of rigid and flexible ring segments. Combined with the delivery chain and drive component of the sample delivery component, the blood sample can be stored quickly and safely.

Benefits of technology

By rapidly transferring and storing at appropriate temperatures, the time blood samples spend in the external environment is reduced, decreasing the risk of sample deterioration and improving storage efficiency and safety.

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Abstract

The invention particularly relates to a blood sampling device for anemia patients, and belongs to the technical field of sample storage equipment. The blood sampling device for the anemia patient comprises a storage chamber and a storage part. The storage chamber is provided with an inlet and an outlet. The storage component is contained in the storage chamber and comprises a storage disc and a plurality of limiting rings, the storage disc is rotationally connected to the storage chamber, the multiple limiting rings are arranged on the storage disc at intervals in the circumferential direction of the storage disc, each limiting ring is of a circular ring shape with a notch and comprises a rigid ring section and two flexible ring sections, the rigid ring sections are connected to the storage disc, and the flexible ring sections are connected to the storage disc. The two flexible ring sections are connected to the two sides of the rigid ring section. The storage chamber is used for providing an environment suitable for storing the blood samples, for example, a temperature adjusting device can be arranged in the storage chamber to adjust the temperature in the storage chamber, and the risk that the blood samples go bad is reduced.
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Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sample storage devices, and particularly relates to a blood sampling device for an anemia patient. BACKGROUND

[0002] Blood sampling and blood analysis is a common way to determine the physical condition of a patient. For example, blood sampling is performed on an anemia patient to determine the amount of hemoglobin and the concentration of hemoglobin, thereby determining the type of anemia.

[0003] Generally, blood samples need to be stored in an environment at a specific temperature. The current processing method is to insert multiple sample tubes into a tray, and then place the tray in a storage room. The disadvantage of this processing method is that the medical staff often fills all the slots on a tray before placing the tray in the storage room, which increases the time of the first sample in the room temperature environment and increases the risk of quality change. SUMMARY

[0004] The purpose of the application is to provide a blood sampling device for an anemia patient, which can temporarily store blood samples and reduce the risk of quality change of blood samples.

[0005] To achieve the above-mentioned purpose of the application, the technical solution adopted by the application is that the application provides a blood sampling device for an anemia patient, which comprises a storage room and a storage component. The storage room is provided with an inlet and an outlet. The storage component is accommodated in the storage room, and the storage component comprises a storage disc and a plurality of limiting rings. The storage disc is rotationally connected to the storage room, and the plurality of limiting rings are arranged at intervals around the circumference of the storage disc. The limiting ring is in the form of a ring with a notch, and the limiting ring comprises a rigid ring segment and two flexible ring segments. The rigid ring segment is connected to the storage disc, and the two flexible ring segments are connected to the two sides of the rigid ring segment.

[0006] In some embodiments, the two sides of the rigid ring segment are provided with a slot, and the flexible ring segment is inserted into the slot.

[0007] In some embodiments, the sample sending component further comprises a conveying chain, a containing part and a limiting part. The conveying chain comprises a plurality of chain links connected in sequence. First rotation shafts and second rotation shafts are arranged between the chain links in the moving direction of the conveying chain. The first rotation shafts are in front and the second rotation shafts are in back. The shafts of the first rotation shafts and the second rotation shafts are parallel. The containing part comprises a bottom plate and a side wall. The bottom plate is rotationally connected to the first rotation shafts. The side wall is connected to the bottom plate. In the moving direction of the conveying chain, one side of the side wall facing forward is provided with an arc-shaped inner recess. The axial direction of the arc-shaped inner recess is parallel to the axial direction of the limiting ring. When the side wall faces the limiting ring, the two flexible ring segments are contained inside the arc-shaped inner recess. The limiting part is rotationally connected to the second rotation shafts. The limiting part is provided with a limiting hole. The axial direction of the limiting hole is perpendicular to the axial direction of the second rotation shafts. The containing part is movably provided with a latch part. The latch part is inserted into the limiting hole.

[0008] In some embodiments, the latch part is partially arranged inside the arc-shaped inner recess. The peripheral wall of the latch part is oppositely provided with two notch parts corresponding to the two flexible ring segments. The notch parts and the peripheral wall of the latch part are connected by an arc surface. When the two flexible ring segments are folded under the action of the arc-shaped inner recess, the flexible ring segments abut against the arc surface to push the latch part out of the limiting hole.

[0009] In some embodiments, the latch part is attached to the inner wall of the arc-shaped inner recess. The inner part of the arc-shaped inner recess is provided with a flexible wrapping part surrounding the peripheral wall of the latch part.

[0010] In some embodiments, the flexible wrapping part is provided with an adhesive layer or a plurality of suction cups.

[0011] In some embodiments, the conveying chain is arranged in two. The two ends of the first rotation shafts and the second rotation shafts are connected to the two conveying chains respectively.

[0012] In some embodiments, the conveying direction of the conveying chain is inclined upward.

[0013] In some embodiments, the driving component is arranged outside the storage chamber. The rotating end of the driving component is arranged inside the storage chamber and connected to the storage disc.

[0014] In some embodiments, the entrance and the exit of the storage chamber are respectively provided with a curtain.

[0015] The present application has the following advantages:

[0016] 1. The storage chamber is used to provide a suitable environment for storing blood samples. For example, a temperature adjusting device can be arranged in the storage chamber to adjust the temperature in the storage chamber, thereby reducing the risk of deterioration of the blood samples.

[0017] 2、The limiting ring opposite the entrance and exit of the storage chamber can be adjusted when the storage disc rotates, facilitating the blood samples to be placed in the limiting ring from the entrance of the storage chamber in sequence, and then facilitating the blood samples to be taken out from the storage chamber from the exit of the storage chamber in sequence. When the medical staff performs the blood sampling operation, the blood samples can be sent into the storage chamber one by one, thereby reducing the time of the blood samples in the external environment and reducing the risk of deterioration of the blood samples.

[0018] 3、The rigid ring segment and the flexible ring segment cooperate to form the limiting ring with the notch, the gap between the two flexible ring segments forms the notch, and the test tube for storing the blood sample can be clamped into the limiting ring from the notch, so that the test tube can be arranged in the limiting ring, and the risk of the test tube being taken out of the limiting ring is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the blood sampling device for anemic patients of the application;

[0020] Figure 2 It is a structural schematic view of the storage component of the application;

[0021] Figure 3 It is an enlarged view of A of Figure 2

[0022] Figure 4 It is a structural schematic view of the sample feeding component of the application;

[0023] Figure 5 It is a cooperation schematic view of the sample feeding component and the storage component of the application;

[0024] Figure 6 It is a structural schematic view of the latch part of the application;

[0025] Figure 7 It is a structural schematic view of the conveying chain of the application;

[0026] Figure 8 It is a structural schematic view of the test tube of the application.

[0027] The reference signs are as follows: 1, storage chamber; 2, storage disc; 3, limiting ring; 4, driving component; 5, conveying chain; 6, containing part; 7, limiting part; 8, rigid ring segment; 9, flexible ring segment; 10, first rotating shaft; 11, second rotating shaft; 12, bottom plate; 13, side wall; 14, latch part; 15, flexible wrapping part; 16, arc-shaped inner recess; 17, arc surface; 18, notch part; 19, limiting boss; 20, test tube. DETAILED DESCRIPTION

[0028] ​The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. If not specifically indicated, the technical means used in the embodiments are conventional means familiar to those skilled in the art.

[0029] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0030] Referring to Figure 1 and Figure 2 , the present application provides a blood sampling device for anemic patients, comprising a storage chamber 1 and a storage component. The storage chamber 1 is provided with an inlet and an outlet. The storage component is contained in the storage chamber 1, and the storage component comprises a storage disc 2 and a plurality of limiting rings 3. The storage disc 2 is rotationally connected to the storage chamber 1, and the plurality of limiting rings 3 are arranged at intervals around the circumference of the storage disc 2. The limiting ring 3 is in the form of a notched circular ring, and the limiting ring 3 comprises a rigid ring segment 8 and two flexible ring segments 9. The rigid ring segment 8 is connected to the storage disc 2, and the two flexible ring segments 9 are connected to the two sides of the rigid ring segment 8.

[0031] The storage chamber 1 is used to provide an environment suitable for storing blood samples. For example, a temperature adjusting device can be provided in the storage chamber 1 to adjust the temperature in the storage chamber 1, thereby reducing the risk of deterioration of the blood samples.

[0032] The inlet and outlet of the storage chamber 1 are respectively used for placing blood samples and taking out blood samples.

[0033] When the storage disc 2 rotates, the limiting ring 3 opposite the inlet and outlet of the storage chamber 1 can be adjusted, so that the blood samples can be placed in the limiting ring 3 from the inlet of the storage chamber 1 in turn, and then the blood samples can be taken out from the storage chamber 1 from the outlet of the storage chamber 1 in turn. When the medical staff performs blood sampling, the blood samples can be sent into the storage chamber 1 one by one, thereby reducing the time of the blood samples in the external environment, and further reducing the risk of deterioration of the blood samples.

[0034] The flexible ring segment 9 is made of a material capable of elastic deformation.

[0035] Referring to Figure 7, the rigid ring segment 8 and the flexible ring segment 9 cooperate to form the notched limiting ring 3, the gap between the two flexible ring segments 9 forms the notch, and the test tube 20 storing the blood sample can be clamped into the limiting ring 3 from the notch, so that the test tube 20 can be arranged in the limiting ring 3. In order to prevent the test tube 20 from being axially separated from the limiting ring 3, the peripheral wall of the test tube 20 can be provided with a limiting boss 19, and the limiting boss 19 abuts against the limiting ring 3, so that the test tube 20 cannot fall from the limiting ring 3.

[0036] The flexible structure of the flexible ring segment 9 enables the test tube 20 to be clamped into the limiting ring 3 when the notch is small, thereby improving the fixing reliability.

[0037] Referring to Figure 3 In some embodiments, the rigid ring segment 8 is provided with a slot on both sides, and the flexible ring segment 9 is inserted into the slot.

[0038] Under the action of the slot, the flexible ring segment 9 can be detachably connected to the rigid ring segment 8, thereby facilitating subsequent replacement of the flexible ring segment 9.

[0039] Referring to Figure 1 、 Figure 4 and Figure 5 In some embodiments, the sample sending component further includes a conveying chain 5, a containing part 6, and a limiting part 7. The conveying chain 5 includes a plurality of chain links connected in sequence, and a first rotating shaft 10 and a second rotating shaft 11 are arranged at intervals between the chain links in the moving direction of the conveying chain 5, the first rotating shaft 10 is in front, the second rotating shaft 11 is in back, and the shafts of the first rotating shaft 10 and the second rotating shaft 11 are parallel. The containing part 6 includes a bottom plate 12 and a side wall 13, the bottom plate 12 is rotatably connected to the first rotating shaft 10, and the side wall 13 is connected to the bottom plate 12. In the moving direction of the conveying chain 5, one side of the side wall 13 facing forward is provided with an arc-shaped inner recess 16, the axial direction of the arc-shaped inner recess 16 is parallel to the axial direction of the limiting ring 3, and the limiting ring 3 is configured to be arranged with the side wall 13 facing the limiting ring 3, so that the two flexible ring segments 9 are contained inside the arc-shaped inner recess 16. The limiting part 7 is rotatably connected to the second rotating shaft 11, and the limiting part 7 is provided with a limiting hole, the axial direction of the limiting hole is perpendicular to the axial direction of the second rotating shaft 11, and the containing part 6 is movably provided with a latch part 14, and the latch part 14 is inserted into the limiting hole.

[0040] The driving structure of the conveying chain 5 can be selected from existing structures, which will not be described here.

[0041] The bottom plate 12 can be provided with a shaft hole, and the first rotating shaft 10 can be inserted into the shaft hole of the bottom plate 12. Similarly, the limiting part 7 can also be provided with a shaft hole, and the second rotating shaft 11 can be inserted into the shaft hole of the limiting part 7.

[0042] When the test tube 20 is placed in the accommodating part 6, the bottom plate 12 is used to support the test tube 20, and the arc-shaped inner recess 16 is used to limit the test tube 20, so as to prevent the test tube 20 from toppling over.

[0043] By reasonably setting the position of the conveying end of the conveying chain 5 relative to the entrance of the storage room 1, when the accommodating part 6 moves to the designated position along with the conveying chain 5, the gap of the limiting ring 3 is opposite to the arc-shaped inner recess 16, and along with the further movement of the conveying chain 5, the limiting ring 3 moves into the arc-shaped inner recess 16, the test tube 20 is clamped into the limiting ring 3, and the inner wall surface of the arc-shaped inner recess 16 causes the two flexible ring segments 9 to close, thereby reducing the risk of the test tube 20 falling out.

[0044] The limiting part 7 is used to limit the accommodating part 6, that is, when the plug-in part 14 is inserted into the limiting hole of the limiting part 7, at this time, the accommodating part 6 cannot rotate relative to the first rotating shaft 10, and after the test tube 20 is clamped into the limiting ring 3, the plug-in part 14 is pulled out of the limiting hole, at this time, the limiting part 7 and the accommodating part 6 are disconnected, and the limiting part 7 and the accommodating part 6 can rotate to the side away from the storage room 1, by reasonably setting the position of the conveying chain 5 relative to the storage room 1 and the shape of the entrance, the conveying chain 5 can continue to move after the limiting part 7 and the accommodating part 6 rotate to the side away from the storage room 1, the limiting part 7 and the accommodating part 6 can pass through the storage room 1, and the new accommodating part 6 can be moved to the position facing the entrance of the storage room 1.

[0045] The accommodating part 6 can be provided with a driving structure to drive the plug-in part 14 to move after the test tube 20 is sent into the limiting ring 3.

[0046] When the medical staff takes blood, first, the test tube 20 for taking blood is placed in the accommodating part 6 closest to the entrance of the storage room 1, then the conveying chain 5 rotates to send the test tube 20 into the limiting ring 3 opposite to the entrance, the plug-in part 14 is moved, so that the accommodating part 6 can pass through the storage room 1. Then the storage disc 2 rotates to make a new limiting ring 3 opposite to the entrance, the conveying chain 5 rotates to make a new accommodating part 6 opposite to the entrance, and the cycle continues until all the limiting rings 3 of the storage disc 2 are provided with the test tubes 20. The sample sending component saves the process of placing the blood sample into the storage room 1 and placing the test tube 20 into the limiting ring 3, and improves the storage efficiency. When all the limiting rings 3 are provided with the test tubes 20, the test tubes 20 can be taken out one by one and placed into a special blood storage device.

[0047] A spring can be arranged between the accommodating part 6 and the plug-in part 14, and the spring is used to provide a restoring force for moving the plug-in part 14 into the limiting hole.

[0048] In the embodiment of the application, the specific connection structure of the plug-in part 14 and the accommodating part 6 can rotate in the existing structure.

[0049] The current technical solution of the embodiment has the following defects: after all the test tubes 20 in the accommodating portions 6 on the conveying chain 5 are transferred, manual resetting is required, and this defect can be solved by setting multiple accommodating portions 6 and further developing a resetting structure to improve work efficiency.

[0050] Referring to Figure 4 , Figure 5 and Figure 6 In some embodiments, the latch portion 14 is partially arranged inside the arc-shaped inner recess 16, and the peripheral wall of the latch portion 14 is oppositely provided with two notch portions 18 corresponding to the two flexible ring segments 9. The notch portion 18 is connected to the peripheral wall of the latch portion 14 through an arc surface 17. When the two flexible ring segments 9 are folded under the action of the arc-shaped inner recess 16, the flexible ring segments 9 abut against the arc surface 17 to push the latch portion 14 out of the limiting hole.

[0051] The two notch portions 18 enable the two flexible ring segments 9 to be as close as possible when they are folded, thereby reducing the risk of the test tube 20 falling out during the transfer of the test tube 20, and the two flexible ring segments 9 jointly push the latch portion 14 to move, thereby improving the stability of the movement of the latch portion 14.

[0052] When the two flexible ring segments 9 are folded, the flexible ring segments 9 first abut against the arc surface 17 of the notch portion 18, and under the action of the arc, the flexible ring segments 9 can push the latch portion 14 to move, and then the latch portion 14 can move out of the limiting hole, and the accommodating portion 6 can rotate towards the side away from the storage chamber 1.

[0053] It should be noted that, in order to ensure that the flexible ring segments 9 can normally cooperate with the notch portion 18, the latch portion 14 needs to be configured to only move relative to the accommodating portion 6, but cannot rotate relative to the accommodating portion 6.

[0054] Referring to Figure 4 and Figure 5 In some embodiments, the latch portion 14 is attached to the inner wall of the arc-shaped inner recess 16, and the inner portion of the arc-shaped inner recess 16 is provided with a flexible wrapping portion 15 surrounding the peripheral wall of the latch portion 14.

[0055] The flexible wrapping portion 15 can be a hollow air bag structure.

[0056] When the two flexible ring segments 9 abut against the inner wall of the arc-shaped inner recess 16 and are folded under the action of the inner wall of the arc-shaped inner recess 16, the two flexible ring segments 9 abut against the flexible wrapping portion 15.

[0057] The flexible wrapping part 15 can protect the latch part 14, reducing the risk of the latch part 14 being moved by mistake. On the other hand, the flexible wrapping part 15 can push the test tube 20 to move, facilitating the transfer of the test tube 20. Specifically, when the limiting ring 3 moves into the arc-shaped inner recess 16, the test tube 20 is first partially clamped into the gap of the limiting ring 3, and then the flexible ring segment 9 abuts against the flexible wrapping part 15 and gradually closes, and the flexible wrapping part 15 gradually moves away from the inner wall of the arc-shaped inner recess 16, pushing the test tube 20 to move towards the inside of the limiting ring 3. On the other hand, the flexible wrapping part 15 can protect the test tube 20. If the test tube 20 is made of glass, the test tube 20 may collide with the side wall 13 during the movement of the conveying chain 5, and at this time, the flexible wrapping part 15 can reduce the risk of the test tube 20 being broken.

[0058] In some embodiments, the flexible wrapping part 15 is provided with an adhesive layer or a plurality of suction cups.

[0059] The adhesive layer and the suction cups are used to connect the test tube 20 to the flexible wrapping part 15 when the test tube 20 is placed in the accommodating part 6, improving the stability of the test tube 20.

[0060] The adhesive layer or the suction cups can be arranged in the region of the flexible wrapping part 15 opposite the two gap parts 18 of the peripheral wall of the latch part 14.

[0061] In the initial state, the contact area between the flexible wrapping part 15 and the test tube 20 is large, ensuring the protection effect on the test tube 20. When the two flexible ring segments 9 close, the flexible wrapping part 15 expands, reducing the contact area between the flexible wrapping part 15 and the test tube 20, facilitating the separation of the test tube 20 and the adhesive layer or the suction cups of the flexible wrapping part 15.

[0062] Referring to Figure 7 In some embodiments, two conveying chains 5 are arranged at intervals, and the two ends of the first rotating shaft 10 and the second rotating shaft 11 are respectively connected to the two conveying chains 5.

[0063] The two conveying chains 5 improve the stability of the conveying chain 5 driving the movement of the accommodating part 6, and further improve the stability of the movement of the test tube 20.

[0064] Referring to Figure 1 In some embodiments, the conveying direction of the conveying chain 5 is configured to be inclined upward.

[0065] The conveying chain 5 can be arranged such that the side away from the entrance of the storage room 1 is below, and the side close to the entrance of the storage room 1 is above.

[0066] The inclined arrangement of the conveying chain 5 enables the accommodating part 6 to rotate in the direction away from the entrance of the storage room 1 under the action of gravity after the latch part 14 is separated from the limiting hole of the limiting part 7.

[0067] Referring to Figure 1 In some embodiments, the storage device further comprises a driving component 4, the driving component 4 is arranged outside the storage chamber 1, and a rotating end of the driving component 4 is arranged inside the storage chamber 1 and connected to the storage disc 2.

[0068] The driving component 4 can be a motor or a combination of a motor and a speed reducer.

[0069] The output end of the motor or the speed reducer is the rotating end, which is connected to the storage disc 2, so that the driving component 4 can drive the storage disc 2 to rotate. The driving component 4 is arranged outside the storage chamber 1, which reduces the risk of interference of the temperature generated by the driving component 4 during operation with the temperature inside the storage chamber 1.

[0070] In some embodiments, the entrance and the exit of the storage chamber 1 are respectively provided with a curtain.

[0071] The curtain can be a magnetic curtain in the prior art. The curtain neither hinders the taking and placing of blood samples nor reduces the interference of the external environment with the storage chamber 1.

[0072] The above embodiments only describe the preferred modes of the present application and do not limit the scope of the present application. Any modification, variation, modification, and replacement of the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope determined by the claims of the present application.

Claims

1. A blood sampling device for use in an anemic patient, characterized in that, The utility model relates to a sample storage device, including: The storage chamber (1) is provided with the entrance and the exit; The storage part is contained in the storage chamber (1), and the storage part includes the storage tray (2) and a plurality of limiting rings (3), the storage tray (2) is rotatably connected to the storage chamber (1), a plurality of limiting rings (3) are arranged at intervals around the circumference of the storage tray (2), the limiting ring (3) is in the form of a notched circular ring, the limiting ring (3) includes a rigid ring segment (8) and two flexible ring segments (9), the rigid ring segment (8) is connected to the storage tray (2), and the two flexible ring segments (9) are connected to the two sides of the rigid ring segment (8).

2. The blood sampling device for an anemic patient according to claim 1, wherein The two sides of the rigid ring segment (8) are provided with a slot, and the flexible ring segment (9) is inserted into the slot.

3. The blood sampling device for an anemic patient according to claim 1, wherein It also includes a sample delivery component, which includes: The conveying chain (5) includes a plurality of chain links connected in sequence, and along the moving direction of the conveying chain (5), the chain links are provided with a first rotating shaft (10) and a second rotating shaft (11) at intervals, the first rotating shaft (10) is in front, the second rotating shaft (11) is in back, and the shaft centers of the first rotating shaft (10) and the second rotating shaft (11) are parallel; The containing part (6) includes a bottom plate (12) and a side wall (13), the bottom plate (12) is rotatably connected to the first rotating shaft (10), the side wall (13) is connected to the bottom plate (12), and along the moving direction of the conveying chain (5), the side wall (13) is provided with an arc-shaped recess (16) on the side facing forward, the axial direction of the arc-shaped recess (16) is parallel to the axial direction of the limiting ring (3), and the limiting ring (3) is configured to accommodate the two flexible ring segments (9) inside the arc-shaped recess (16) when the side wall (13) faces the limiting ring (3); The limiting part (7) is rotatably connected to the second rotating shaft (11), the limiting part (7) is provided with a limiting hole, the axial direction of the limiting hole is perpendicular to the axial direction of the second rotating shaft (11), and the containing part (6) is movably provided with a latch part (14), the latch part (14) is inserted into the limiting hole.

4. The blood sampling device for an anemic patient according to claim 3, wherein The latch part (14) is partially arranged inside the arc-shaped recess (16), the peripheral wall of the latch part (14) is relatively provided with two notch parts (18), the two notch parts (18) correspond to the two flexible ring segments (9), the notch part (18) is connected to the peripheral wall of the latch part (14) through an arc surface (17), and the arc surface (17) is configured to abut against the arc surface (17) to push the latch part (14) out of the limiting hole when the two flexible ring segments (9) are closed under the action of the arc-shaped recess (16).

5. The blood sampling device for an anemic patient according to claim 4, wherein The latch part (14) is attached to the inner wall of the arc-shaped recess (16), and the inner part of the arc-shaped recess (16) is provided with a flexible wrapping part (15) arranged around the peripheral wall of the latch part (14).

6. The blood sampling device for an anemic patient according to claim 5, wherein The flexible wrapping part (15) is provided with an adhesive layer or a plurality of suction cups.

7. The blood sampling device for an anemic patient according to claim 3, wherein The two conveying chains (5) are arranged at intervals, and the two ends of the first rotating shaft (10) and the second rotating shaft (11) are connected to the two conveying chains (5) respectively.

8. The blood sampling device for an anemic patient according to claim 3, wherein The conveying direction of the conveying chain (5) is configured to be inclined upward.

9. The blood sampling device for an anemic patient according to claim 1, wherein The drive component (4) is arranged outside the storage room (1), and the rotating end of the drive component (4) is arranged in the storage room (1) and connected to the storage disc (2).

10. The blood sampling device for an anemic patient according to claim 1, wherein The entrance and the exit of the storage room (1) are respectively provided with a curtain.