Blood drawing tube

Abstract

The utility model discloses a blood drawing tube, and relates to the technical field of blood collection tubes, the blood drawing tube comprises a blood drawing mechanism, the blood drawing mechanism comprises a blood collection tube, the outer surface of the blood collection tube is fixedly connected with a fixing cover, the inner wall of the fixing cover and the inner wall of the blood collection tube are jointly and fixedly connected with a rubber plug, and the top end of the blood collection tube is provided with the blood drawing tube. One end of the blood drawing tube is fixedly communicated with a connecting shell, a butt joint shell is clamped in the connecting shell, the bottom end of the butt joint shell is fixedly communicated with a bottle plug puncture needle, and a puncture mechanism is arranged at the top end of the blood collection tube. Meanwhile, the connecting shell and the butt joint shell cannot be broken due to excessive stress, the plugging convenience between the blood drawing tube and the blood collection tube is effectively improved, and the problem that excessive blood of a patient in the blood drawing tube leaks outwards to cause infection due to the fact that the connecting shell and the butt joint shell are broken due to stress is solved.

Description

Technical Field

[0001] This invention relates to the field of blood vessel extraction technology, specifically to a blood vessel extraction method. Background Technology

[0002] A blood collection tube, also known as a disposable blood collection needle, consists of a puncture needle, a needle holder, a rubber tubing, and a stopper needle. It is mainly used in conjunction with vacuum blood collection tubes. Vacuum blood collection tubes are disposable, negative pressure vacuum glass tubes that enable quantitative blood collection. The principle of vacuum blood collection tubes is to pre-evacuate the capped blood collection tube to different degrees of vacuum. The negative pressure is used to automatically and quantitatively collect venous blood samples. After the puncture needle of the blood collection tube is inserted into the human vein, the other end of the tube, the stopper needle, is inserted into the rubber stopper of the vacuum blood collection tube. The venous blood is drawn into the blood sample container through the blood collection tube and the stopper needle under the action of negative pressure inside the vacuum blood collection tube. Multiple tubes can be collected in a single venous puncture without leakage.

[0003] When using existing blood collection tubes, medical staff need to remove the vacuum blood collection tube from the stopper needle at the end of the tube and store it after blood collection. Then, they need to remove the needle from the patient. During this process, medical staff need to hold the connection between the tube and the stopper needle. However, because the connection between the stopper needle and the vacuum blood collection tube is quite tight, the stopper needle is not easy to pull out without force. If too much force is used, the plastic shell at the connection point can easily break, exposing excess blood from the patient. This makes inserting and removing the vacuum blood collection tube time-consuming and laborious, affecting the convenience and safety of blood collection. In addition, to better locate the patient's veins, most medical staff need to draw blood with bare hands. During the removal of the vacuum blood collection tube, the rough connection between the tube and the stopper needle can easily rub against the medical staff's skin, causing skin damage. If excess blood leaks out at this time, it can increase the risk of infection.

[0004] Combining the above issues, we find that existing blood collection tubes are difficult to avoid simultaneously when in use. Even if they can be solved, they require external tools, thus failing to achieve the desired effect. Therefore, we propose a blood collection method. Summary of the Invention

[0005] The purpose of this invention is to provide a blood collection tube to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a blood collection tube, comprising a blood collection mechanism, the blood collection mechanism comprising a blood collection tube, a fixing cover fixedly connected to the outer surface of the blood collection tube, a rubber stopper fixedly connected to the inner wall of the fixing cover and the inner wall of the blood collection tube, a blood collection tube disposed at the top end of the blood collection tube, a connecting shell fixedly connected to one end of the blood collection tube, a docking shell snapped into the inside of the connecting shell, a bottle stopper puncture needle fixedly connected to the bottom end of the docking shell, and a puncture mechanism disposed at the top end of the blood collection tube;

[0007] The puncture mechanism includes a convenient insertion and removal unit, which is disposed outside the docking shell and is used to increase the ease of insertion and removal of the bottle stopper puncture needle.

[0008] The puncture mechanism also includes a puncture positioning unit, which is located outside the convenient insertion and removal unit. The puncture positioning unit is used to position the bottle stopper puncture needle after puncturing the rubber stopper.

[0009] The convenient insertion and removal unit is equipped with a sealing mechanism inside. The sealing mechanism is used in conjunction with the puncture mechanism to prevent excessive twisting of the aspiration tube.

[0010] Preferably, the convenient plug-in unit includes a docking cover, the inner wall of which contacts the outer surface of the fixing cover, the outer surface of the docking shell being fixedly connected to the inner wall of the docking cover, two torsion blocks being fixedly connected to the outer surface of the docking cover, a connecting spring being fixedly connected to the inner top wall of the docking cover, a moving ring being fixedly connected to the other end of the connecting spring, two arc-shaped grooves being formed on the inner wall of the docking cover, two positioning grooves being formed on the bottom surface of the docking cover, the top ends of the two positioning grooves being respectively connected to the bottom ends of the two arc-shaped grooves, and a through groove being formed at the top ends of the two arc-shaped grooves, and a sliding column being rotatably connected inside the fixing cover, with the two sliding columns being slidably connected inside the two positioning grooves respectively.

[0011] Preferably, the other end of the blood collection tube is fixedly connected to a needle holder, and the right end of the needle holder is fixedly connected to a blood collection needle.

[0012] Preferably, anti-detachment rings are fixedly connected to the outer surfaces of both sliding columns, and both anti-detachment rings are slidably connected inside the fixed cover.

[0013] Preferably, the bottom surface of the moving ring has several slots, and each of the slots is rotatably connected to a roller.

[0014] Preferably, the puncture positioning unit includes two arc-shaped plates, both of which are disposed outside the docking cover. A pressing plate is fixedly connected to the outer surface of each of the two arc-shaped plates. A positioning post is fixedly connected to the inner wall of each of the two arc-shaped plates. The two positioning posts are slidably connected inside the docking cover. A return spring is sleeved on the outer surface of each positioning post. One end of each return spring is fixedly connected to the inner wall of the two arc-shaped plates, and the other end of each return spring is fixedly connected to the outer surface of the docking cover. Two fixing brackets are fixedly connected to the outer surface of the docking cover, and the inner walls of each fixing bracket are fixedly connected to... Compression springs, with locking blocks fixedly connected to the other ends of both compression springs. One side of each locking block is inclined. The two locking blocks are slidably connected inside two through slots. Limiting slots are formed on the other side of each locking block. Two push frames are fixedly connected to the opposite sides of each locking block. The inner wall of each push frame is inclined. One end of each of the two arc-shaped plates is fixedly connected to a fixing plate. Two push blocks are fixedly connected to the other side of each fixing plate. One side of each push block is inclined. The inclined surface of each push block is in contact with the inclined surface of the push frame.

[0015] Preferably, the inner walls of both arc-shaped plates are fixedly connected to stabilizing columns, and both stabilizing columns are slidably connected inside the docking cover.

[0016] Preferably, the other end of each of the two positioning posts is fixedly connected to a fixing ring, and the outer surface of each fixing ring is in contact with the inner wall of the docking cover.

[0017] Preferably, the sealing mechanism includes a sealing ring, the outer surface of which is fixedly connected to the inner wall of the connecting shell, a sliding groove is provided on the outer surface of the docking shell, the sealing ring is rotatably connected inside the sliding groove, a limiting seat is fixedly connected to the top of the docking shell, and a plurality of balls are slidably connected inside the limiting seat, and both the limiting seat and the plurality of balls are slidably connected inside the connecting shell.

[0018] Preferably, a sealing ring is fixedly connected to the inner wall of the fixing cover, and the outer surface of the sealing ring is fixedly connected to the inner wall of the rubber plug.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention, by incorporating a convenient insertion and removal unit, increases the ease with which the stopper puncture needle passes through the rubber stopper and enters the blood collection tube. Furthermore, the elasticity provided by the connecting spring helps the stopper puncture needle to be pulled out of the blood collection tube more easily, eliminating the need for medical personnel to pinch the connecting shell and docking shell to insert or remove the needle. This not only prevents abrasion to the medical personnel's hands when removing the blood collection tube, but also prevents the connecting shell and docking shell from breaking due to excessive force. This effectively increases the ease of insertion and removal between the blood collection and aspiration tubes, and prevents the leakage of excess blood from the patient during blood collection, which could lead to infection, due to the connecting shell and docking shell breaking under stress.

[0021] 2. By setting a puncture positioning unit, this invention can position the puncture needle that passes through the rubber stopper and enters the blood collection tube, preventing the puncture needle from becoming loose after being inserted into the blood collection tube. This increases the ease of inserting and removing the puncture needle while ensuring its stability, allowing blood collection to proceed normally.

[0022] 3. By setting up a sealing mechanism, the present invention enables relative rotation between the docking shell and the connecting shell while ensuring a seal, thereby preventing excessive twisting of the blood collection tube when the docking cover rotates, and ensuring the normal operation of the blood collection work. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the blood vessel used in this invention;

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of the blood collection tube of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the torsion block of the present invention;

[0027] Figure 5 This is a schematic diagram of the moving ring structure of the present invention viewed from below;

[0028] Figure 6 This is a schematic diagram of the structure of the docking cover of the present invention after being unfolded.

[0029] Figure 7 This is a schematic diagram of the structure of the docking cover and the arc-shaped plate of the present invention;

[0030] Figure 8 This is a schematic diagram of the arc-shaped plate of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the push block and push frame of the present invention;

[0032] Figure 10 This is a cross-sectional structural diagram of the connecting shell of the present invention.

[0033] In the diagram: 1. Blood collection mechanism; 11. Blood collection tube; 12. Fixing cover; 13. Rubber stopper; 14. Blood collection tube; 15. Connecting shell; 16. Docking shell; 17. Bottle stopper puncture needle; 2. Puncture mechanism; 21. Convenient insertion and removal unit; 2101. Docking cover; 2102. Torsion block; 2103. Connecting spring; 2104. Moving ring; 2105. Roller; 2106. Arc groove; 2107. Positioning groove; 2108. Through groove; 2109. Sliding column; 2110. Needle holder; 2111. Blood collection needle; 2112. Anti-dislodgement device 2113. Ring; 22. Groove; 22. Puncture positioning unit; 2201. Arc plate; 2202. Press plate; 2203. Positioning post; 2204. Return spring; 2205. Fixing frame; 2206. Compression spring; 2207. Snap block; 2208. Limiting groove; 2209. Pushing frame; 2210. Fixing plate; 2211. Pushing block; 2212. Stabilizing post; 2213. Fixing ring; 3. Closing mechanism; 311. Closing ring; 312. Sliding groove; 313. Sealing ring; 314. Limiting seat; 315. Ball bearing. Detailed Implementation

[0034] 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.

[0035] Example 1: Please refer to Figures 1-6 This invention provides a technical solution: a blood collection tube, including a blood collection mechanism 1, which includes a blood collection tube 11, also called a disposable vacuum blood collection tube 11. The principle of the disposable vacuum blood collection tube 11 is to pre-draw the blood collection tube 11 with a cap to different vacuum degrees, and then seal it with a rubber stopper to keep the inside under negative pressure. Then, the negative pressure is used to automatically and quantitatively collect venous blood samples. A fixing cover 12 is fixedly connected to the outer surface of the blood collection tube 11. A rubber stopper 13 is fixedly connected to the inner wall of the fixing cover 12 and the inner wall of the blood collection tube 11. A blood collection tube 14 is provided at the top of the blood collection tube 11. A connecting shell 15 is fixedly connected to one end of the blood collection tube 14. A docking shell 16 is snapped into the inside of the connecting shell 15. A bottle stopper puncture needle 17 is fixedly connected to the bottom end of the docking shell 16. A puncture mechanism 2 is provided at the top of the blood collection tube 11.

[0036] The puncture mechanism 2 includes a convenient insertion and removal unit 21, which is located on the outside of the docking shell 16. The convenient insertion and removal unit 21 is used to increase the ease of insertion and removal of the bottle stopper puncture needle 17.

[0037] As a further limitation of the puncture mechanism 2 of the present invention, the convenient insertion and removal unit 21 includes a docking cover 2101. The inner wall of the docking cover 2101 is in contact with the outer surface of the fixing cover 12. The outer surface of the docking shell 16 is fixedly connected to the inner wall of the docking cover 2101. Two torsion blocks 2102 are fixedly connected to the outer surface of the docking cover 2101. A connecting spring 2103 is fixedly connected to the inner top wall of the docking cover 2101. A moving ring 2104 is fixedly connected to the other end of the connecting spring 2103. Two arc-shaped grooves 2106 are formed on the inner wall of the docking cover 2101. Two positioning grooves 2107 are formed on the bottom surface of the docking cover 2101. The top ends of the two positioning grooves 2107 are respectively connected to the bottom ends of the two arc-shaped grooves 2106. A through groove 2108 is formed at the top end of each of the two arc-shaped grooves 2106. A sliding column 2109 is rotatably connected inside the fixing cover 12. The two sliding columns 2109 are rotatably connected to the inner surface of the fixing cover 12. 109 is slidably connected to the inside of the two positioning slots 2107. By setting the convenient insertion and removal unit 21, the convenience of the bottle stopper puncture needle 17 passing through the rubber stopper 13 into the blood collection tube 11 can be increased. Moreover, the elasticity provided by the connecting spring 2103 can also help the bottle stopper puncture needle 17 to be pulled out of the blood collection tube 11 more easily. Medical staff do not need to pinch the connecting shell 15 and the docking shell 16 to insert and remove the bottle stopper puncture needle 17. This not only prevents the connecting shell 15 and the docking shell 16 from causing abrasion to the skin of medical staff's hands when removing the blood collection tube 11, but also prevents the connecting shell 15 and the docking shell 16 from breaking due to excessive force. This effectively increases the convenience of insertion and removal between the blood collection tube 14 and the blood collection tube 11, and prevents the leakage of excess blood from the patient in the blood collection tube 14 and the problem of infection caused by the breaking of the connecting shell 15 and the docking shell 16 due to force.

[0038] The other end of the blood collection tube 14 is fixedly connected to the needle holder 2110, and the right end of the needle holder 2110 is fixedly connected to the blood collection needle 2111. The needle holder 2110 allows medical staff to hold the blood collection needle 2111 by hand, and then the blood collection needle 2111 can be inserted into the patient's vein to ensure the normal progress of blood collection.

[0039] Anti-detachment rings 2112 are fixedly connected to the outer surfaces of the two sliding columns 2109. The two anti-detachment rings 2112 are slidably connected inside the fixed cover 12. The anti-detachment rings 2112 can limit the position of the sliding column 2109 inside the fixed cover 12 without affecting the normal rotation of the sliding column 2109, thus ensuring the reliability of the sliding column 2109.

[0040] The bottom surface of the moving ring 2104 has several slots 2113, and each slot 2113 is rotatably connected to a roller 2105. By using the slots 2113 in conjunction with the rolling of the rollers 2105, the friction between the moving ring 2104 and the fixed cover 12 can be reduced, ensuring the smooth rotation of the docking cover 2101.

[0041] The specific implementation method of this embodiment is as follows: When it is necessary to draw blood from a patient, the medical staff first uses the needle holder 2110 to insert the blood collection needle 2111 into the patient's vein, and uses medical tape or other tools to fix the position of the blood collection needle 2111. Then, the sliding column 2109 is aligned with the positioning groove 2107, so that the blood collection tube 11 is inserted into the docking cover 2101 until the sliding column 2109 slides to the position where the positioning groove 2107 and the arc groove 2106 are connected. At this time, the medical staff only needs to hold the blood collection tube 11 firmly with one hand, and then use the other hand to rotate the docking cover clockwise through the twisting block 2102. 2101, allowing the sliding column 2109 to slide into the through groove 2108 through the arc groove 2106 under the limiting position of the anti-detachment ring 2112. At this time, the blood collection tube 11 will also enter the interior of the docking cover 2101, and when the blood collection tube 11 enters the interior of the docking cover 2101, it will contact the roller shaft 2105. Then, the moving ring 2104 forces the connecting spring 2103 to contract. By utilizing the rotation of the roller shaft 2105 and the rotational connection between the sliding column 2109 and the fixed cover 12, the smoothness of the blood collection tube 11 entering the interior of the docking cover 2101 can be further ensured. The shortened distance between the two forces the stopper puncture needle 17 through the rubber stopper 13 and into the blood collection tube 11. At this point, blood can be drawn into the blood collection tube 11 through the blood collection needle 2111, the aspiration tube 14, the connecting shell 15, the docking shell 16, and the stopper puncture needle 17, in conjunction with the vacuum negative pressure inside the blood collection tube 11, for blood sampling. Since medical personnel do not need to pinch the connecting shell 15 and the docking shell 16 to insert or remove the stopper puncture needle 17, it not only prevents the connecting shell 15 and the docking shell 16 from causing abrasion to the medical personnel's hands when removing the blood collection tube 11, but also allows the connecting shell 15 and the docking shell 16 to... The docking shell 16 will not break due to excessive force, and the bottle stopper puncture needle 17 does not require medical personnel to forcefully insert it into the blood collection tube 11. It can be completed by simply rotating it, which is less strenuous. This effectively increases the convenience of inserting the bottle stopper puncture needle 17 into the blood collection tube 11. When the blood collection is completed and the bottle stopper puncture needle 17 needs to be removed, the counterclockwise rotation of the docking cover 2101, combined with the elastic force provided by the connecting spring 2103, allows the sliding column 2109 to quickly slide from the arc groove 2106 into the positioning groove 2107, so that the bottle stopper puncture needle 17 can be quickly pulled out of the blood collection tube 11.

[0042] Example 2: Please refer to Figures 6-9The present invention provides a technical solution: a blood collection tube. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The puncture mechanism 2 also includes a puncture positioning unit 22. The puncture positioning unit 22 is disposed outside the convenient insertion and removal unit 21. The puncture positioning unit 22 is used to position the bottle stopper puncture needle 17 after puncturing the rubber stopper 13.

[0043] As a further definition of the puncture mechanism 2 of the present invention, the puncture positioning unit 22 includes two arc-shaped plates 2201, both of which are disposed outside the docking cover 2101. A pressing plate 2202 is fixedly connected to the outer surface of each of the two arc-shaped plates 2201, and a positioning post 2203 is fixedly connected to the inner wall of each of the two arc-shaped plates 2201. Both positioning posts 2203 are slidably connected inside the docking cover 2101, and a return spring 22 is sleeved on the outer surface of each positioning post 2203. 04. One end of each of the two return springs 2204 is fixedly connected to the inner wall of each of the two arc-shaped plates 2201. The other end of each of the two return springs 2204 is fixedly connected to the outer surface of the docking cover 2101. Two fixing brackets 2205 are fixedly connected to the outer surface of the docking cover 2101. Compression springs 2206 are fixedly connected to the inner wall of each of the two fixing brackets 2205. A locking block 2207 is fixedly connected to the other end of each of the two compression springs 2206. One side of each locking block 2207 is inclined. The two locking blocks 2207 are slidably connected to the inside of each of the two through slots 2108. A limit groove 2208 is provided on the other side of each of the two locking blocks 2207. Two pushers 2209 are fixedly connected to the opposite sides of each of the two locking blocks 2207. The inner wall of each pusher 2209 is inclined. One end of each of the two arc-shaped plates 2201 is fixedly connected to a fixing plate 2210. Two pushers 2211 are fixedly connected to the other side of each of the two fixing plates 2210. One side of each push block 2211 is a slope, and the slope of each push block 2211 is in contact with the slope of the push frame 2209. By setting the puncture positioning unit 22, the position of the bottle stopper puncture needle 17 that passes through the rubber stopper 13 and enters the blood collection tube 11 can be positioned to prevent the bottle stopper puncture needle 17 from coming loose after being inserted into the blood collection tube 11. This increases the ease of insertion and removal of the bottle stopper puncture needle 17 while ensuring the stability of the bottle stopper puncture needle 17, so that blood collection can be carried out normally.

[0044] The inner walls of the two arc-shaped plates 2201 are fixedly connected with stabilizing columns 2212. The two stabilizing columns 2212 are slidably connected inside the docking cover 2101. The stabilizing columns 2212 can increase the stability of the arc-shaped plates 2201 when they move, making it less likely for the arc-shaped plates 2201 to deviate when they move, thus increasing the reliability of the arc-shaped plates 2201.

[0045] The other end of each of the two positioning posts 2203 is fixedly connected to a fixing ring 2213. The outer surface of each fixing ring 2213 is in contact with the inner wall of the docking cover 2101. The fixing ring 2213 can fix the position between the positioning post 2203 and the docking cover 2101, prevent the positioning post 2203 from separating from the docking cover 2101, and ensure the stability of the positioning post 2203 in use.

[0046] The specific implementation of this embodiment is as follows: When the sliding post 2109 slides into the through groove 2108, the inclined surface of the locking block 2207 forces the locking block 2207 to slide inside the through groove 2108, causing the compression spring 2206 to contract. Until the sliding post 2109 is completely slid into the through groove 2108 and parallel to the limiting groove 2208, the elastic force provided by the compression spring 2206, in conjunction with the fixing bracket 2205, can push the locking block 2207 to reset, causing the sliding post 2109 to engage in the limiting groove 2208. At this time, the locking block 2207... 7. The limiting groove 2208 can restrict the position of the sliding column 2109, preventing the sliding column 2109 from moving. This ensures that the bottle stopper puncture needle 17, which passes through the rubber stopper 13 and enters the blood collection tube 11, can be positioned, preventing the bottle stopper puncture needle 17 from loosening after being inserted into the blood collection tube 11. This ensures the stability of the bottle stopper puncture needle 17 during use, allowing the blood collection work to proceed stably. When the blood collection is complete and the blood collection tube 11 needs to be separated from the docking cap 2101, the medical staff only needs to hold the blood collection tube 11 firmly with one hand, and use the index finger and thumb of the other hand... When the actuating plate 2202 is pressed, the arc-shaped plate 2201 approaches the docking cover 2101 under the limitation of the positioning post 2203 and the stabilizing post 2212. At this time, the return spring 2204 retracts, and the arc-shaped plate 2201, in conjunction with the fixing plate 2210, moves the pushing block 2211. Since the inclined surface of the pushing block 2211 contacts the inclined surface of the pushing frame 2209, the movement of the pushing block 2211, in conjunction with the pushing frame 2209, drives the locking block 2207 to slide inside the through groove 2108, causing the locking block 2207 to retract into the fixing frame 2205, thus locking the connection. As block 2207 retracts into the fixing frame 2205, the locking block 2207 gradually moves away from the sliding post 2109, allowing the sliding post 2109 to disengage from the limiting groove 2208. Then, the medical staff holds the pressing plate 2202 and rotates it counterclockwise. Since the positioning post 2203 is located inside the docking cover 2101, it can drive the positioning post 2203 and the docking cover 2101 to rotate counterclockwise, allowing the sliding post 2109 to slide into the arc groove 2106, ensuring the normal separation of the bottle stopper puncture needle 17 from the blood collection tube 11 and the rubber stopper 13.

[0047] Example 3: Please refer to Figure 10The present invention provides a technical solution: a blood collection tube. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The convenient insertion and removal unit 21 is provided with a sealing mechanism 3 inside. The sealing mechanism 3 is used in conjunction with the puncture mechanism 2. The sealing mechanism 3 is used to prevent the blood collection tube 14 from being excessively twisted.

[0048] As a further definition of the sealing mechanism 3 of the present invention, the sealing mechanism 3 includes a sealing ring 313. The outer surface of the sealing ring 313 is fixedly connected to the inner wall of the connecting shell 15. A sliding groove 312 is provided on the outer surface of the docking shell 16. The sealing ring 313 is rotatably connected inside the sliding groove 312. A limiting seat 314 is fixedly connected to the top of the docking shell 16. A plurality of balls 315 are slidably connected inside the limiting seat 314. The limiting seat 314 and the plurality of balls 315 are all slidably connected inside the connecting shell 15. By setting the sealing mechanism 3, the tube 14 can be prevented from being excessively twisted when the docking cover 2101 rotates.

[0049] A sealing ring 311 is fixedly connected to the inner wall of the fixing cover 12. The outer surface of the sealing ring 311 is fixedly connected to the inner wall of the rubber plug 13. The sealing ring 311 can further seal the gap between the fixing cover 12 and the rubber plug 13, prevent gas from leaking through the gap, and ensure the tight fit between the fixing cover 12 and the rubber plug 13.

[0050] The specific implementation of this embodiment is as follows: the sealing ring 313 slides inside the sliding groove 312, and the limiting seat 314 and the ball bearing 315 slide inside the connecting shell 15. This ensures the sealing of the connection between the docking shell 16 and the connecting shell 15, while allowing relative rotation between the docking shell 16 and the connecting shell 15. This prevents the blood collection tube 14 from being excessively twisted when the docking cover 2101 rotates, thus ensuring the normal operation of the blood collection work of the blood collection tube 14.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blood collection tube, comprising a blood collection mechanism (1), characterized in that: The blood collection mechanism (1) includes a blood collection tube (11), a fixing cover (12) is fixedly connected to the outer surface of the blood collection tube (11), a rubber stopper (13) is fixedly connected to the inner wall of the fixing cover (12) and the inner wall of the blood collection tube (11), a suction tube (14) is provided at the top of the blood collection tube (11), a connecting shell (15) is fixedly connected to one end of the suction tube (14), a docking shell (16) is snapped into the inside of the connecting shell (15), a bottle stopper puncture needle (17) is fixedly connected to the bottom end of the docking shell (16), and a puncture mechanism (2) is provided at the top of the blood collection tube (11). The puncture mechanism (2) includes a convenient insertion and removal unit (21), which is located outside the docking shell (16). The convenient insertion and removal unit (21) is used to increase the ease of insertion and removal of the bottle stopper puncture needle (17). The puncture mechanism (2) further includes a puncture positioning unit (22), which is located outside the convenient insertion and removal unit (21). The puncture positioning unit (22) is used to position the bottle stopper puncture needle (17) after puncturing the rubber stopper (13). The convenient insertion and removal unit (21) is provided with a sealing mechanism (3) inside. The sealing mechanism (3) is used in conjunction with the puncture mechanism (2). The sealing mechanism (3) is used to prevent the aspiration tube (14) from being excessively twisted.

2. The blood collection tube according to claim 1, characterized in that: The convenient plug-in unit (21) includes a docking cover (2101), the inner wall of which contacts the outer surface of the fixing cover (12), the outer surface of the docking shell (16) being fixedly connected to the inner wall of the docking cover (2101), two torsion blocks (2102) being fixedly connected to the outer surface of the docking cover (2101), a connecting spring (2103) being fixedly connected to the inner top wall of the docking cover (2101), and a moving ring (2104) being fixedly connected to the other end of the connecting spring (2103). The inner wall of the connecting cover (2101) has two arc-shaped grooves (2106), and the bottom surface of the connecting cover (2101) has two positioning grooves (2107). The top ends of the two positioning grooves (2107) are respectively connected to the bottom ends of the two arc-shaped grooves (2106). The top ends of the two arc-shaped grooves (2106) are each provided with a through groove (2108). The interior of the fixed cover (12) is rotatably connected with a sliding column (2109), and the two sliding columns (2109) are respectively slidably connected inside the two positioning grooves (2107).

3. A blood collection tube according to claim 1, characterized in that: The other end of the blood collection tube (14) is fixedly connected to a needle holder (2110), and the right end of the needle holder (2110) is fixedly connected to a blood collection needle (2111).

4. A blood collection tube according to claim 2, characterized in that: The outer surfaces of the two sliding columns (2109) are fixedly connected with anti-detachment rings (2112), and the two anti-detachment rings (2112) are slidably connected inside the fixed cover (12).

5. A blood collection tube according to claim 2, characterized in that: The bottom surface of the moving ring (2104) is provided with a plurality of slots (2113), and each of the slots (2113) is rotatably connected to a roller (2105).

6. A blood collection tube according to claim 2, characterized in that: The puncture positioning unit (22) includes two arc-shaped plates (2201), both of which are disposed outside the docking cover (2101). A pressing plate (2202) is fixedly connected to the outer surface of each of the two arc-shaped plates (2201). A positioning post (2203) is fixedly connected to the inner wall of each of the two arc-shaped plates (2201). Both positioning posts (2203) are slidably connected inside the docking cover (2101). A return spring (2204) is sleeved on the outer surface of each positioning post (2203). One end of each return spring (2204) is fixedly connected to the inner wall of the two arc-shaped plates (2201), and the other end is fixedly connected to the outer surface of the docking cover (2101). Two fixing brackets (2205) are fixedly connected to the outer surface of the docking cover (2101). The inner walls of each fixing bracket (2205) are fixedly connected to... Compression springs (2206), with locking blocks (2207) fixedly connected to the other ends of both compression springs (2206). One side of each locking block (2207) is inclined. The two locking blocks (2207) are slidably connected inside the two through slots (2108). Limiting slots (2208) are provided on the other side of each locking block (2207). Two pushers (2209) are fixedly connected to the opposite sides of each locking block (2207). The inner wall of each pusher (2209) is inclined. One end of each of the two arc plates (2201) is fixedly connected to a fixing plate (2210). Two push blocks (2211) are fixedly connected to the other side of each fixing plate (2210). One side of each push block (2211) is inclined. The inclined surface of each push block (2211) is in contact with the inclined surface of the pusher (2209).

7. A blood collection tube according to claim 6, characterized in that: The inner walls of the two arc-shaped plates (2201) are fixedly connected with stabilizing columns (2212), and the two stabilizing columns (2212) are slidably connected inside the docking cover (2101).

8. A blood collection tube according to claim 6, characterized in that: The other end of each of the two positioning posts (2203) is fixedly connected to a fixing ring (2213), and the outer surface of each of the two fixing rings (2213) is in contact with the inner wall of the docking cover (2101).

9. A blood collection tube according to claim 2, characterized in that: The closing mechanism (3) includes a sealing ring (313), the outer surface of which is fixedly connected to the inner wall of the connecting shell (15). The outer surface of the docking shell (16) is provided with a sliding groove (312), and the sealing ring (313) is rotatably connected inside the sliding groove (312). The top end of the docking shell (16) is fixedly connected to a limiting seat (314), and a plurality of balls (315) are slidably connected inside the limiting seat (314). The limiting seat (314) and the plurality of balls (315) are slidably connected inside the connecting shell (15).

10. A blood collection tube according to claim 1, characterized in that: The inner wall of the fixed cover (12) is fixedly connected to a closing ring (311), and the outer surface of the closing ring (311) is fixedly connected to the inner wall of the rubber plug (13).

Images