Specimen sampling device based on medical detection

Abstract

The invention discloses a specimen sampling device based on medical detection, and relates to the technical field of blood sampling, the specimen sampling device comprises a vacuum blood collection tube, a blood collection needle and a fixator, the vacuum blood collection tube comprises a bottle tube and a bottle cap, the fixator comprises a positioning frame, a sliding block, a puncture needle, a first spring, a second spring and a buckle, and a mounting groove is formed in the upper end face of the positioning frame; the vacuum blood collection tube is detachably installed in the installation groove, the sliding block is installed in the installation groove and is in elastic sliding connection with the positioning frame through a first spring, the puncture needle is installed in the sliding block and is in elastic sliding connection with the positioning frame through a second spring, and a hose is arranged between the blood collection needle and the puncture needle. The blood sampling device has the advantages of being convenient to operate and capable of automatically mixing the anticoagulant, and the problems that according to existing blood sampling equipment, medical staff need to operate with two hands, the blood sampling part of a patient is fixed with one hand, operation is complex, misoperation is prone to occurring, and the process of manually replacing a blood sampling bottle and shaking and mixing the anticoagulant is long in time consumption and low in efficiency are solved.

Description

Technical Field

[0001] The invention relates to the technical field of blood sampling, in particular to a specimen sampling device for medical detection. Background Art

[0002] Blood collection is one of the most common operations in medical testing and is widely used in clinical diagnosis, disease screening, health examinations and other fields. Traditional blood collection methods mainly rely on manual operations by medical staff, including the insertion of blood collection needles, replacement of blood collection bottles and sample processing after blood collection. However, these manual operations have the following problems.

[0003] When a patient needs to undergo multiple tests, multiple samples need to be taken from the patient. Medical staff need to use both hands when taking samples. One hand fixes the patient's blood collection site, and the other hand needs to replace the vacuum blood collection tube. The operation is relatively complicated and prone to misoperation. Manual operation increases the risk of accidental movement or detachment of the blood collection needle, which may cause injury to the patient or infection to the medical staff. The process of manually replacing the blood collection bottle and shaking to mix the anticoagulant is time-consuming, especially in large-scale blood collection, which is inefficient. The effect of manually shaking the mixed anticoagulant is inconsistent, which can easily cause blood sample coagulation and affect subsequent test results. Therefore, a specimen sampling device based on medical testing is needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a specimen sampling device for medical testing, which has the advantages of easy operation and automatic mixing of anticoagulants. It solves the problem that medical staff of existing blood collection equipment need to use both hands to operate, one hand fixes the patient's blood collection site, and the other hand replaces and adjusts the blood collection bottle. The operation is relatively complicated and prone to misoperation. The process of manually replacing the blood collection bottle and shaking to mix the anticoagulant is time-consuming, especially in large-scale blood collection, which leads to low efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a specimen sampling device for medical testing, comprising a vacuum blood collection tube, a blood collection needle and a fixer, the vacuum blood collection tube comprising a bottle tube and a bottle cap, the fixer comprising a positioning frame, a slider, a puncture needle, a first spring, a second spring and a buckle, the upper end surface of the positioning frame is provided with a mounting groove, the vacuum blood collection tube is detachably installed in the mounting groove, the slider is installed in the mounting groove and is elastically slidably connected to the positioning frame through a first spring, the puncture needle is installed in the slider and is elastically slidably connected to the positioning frame through a second spring, the blood collection needle is detachably installed on the fixer, and a hose is provided between the blood collection needle and the puncture needle.

[0006] As a preferred specimen sampling device for medical testing according to the present invention, the vacuum blood collection tube also includes an agitator, a turntable and a torsion spring. The turntable is installed in the bottle cap through the torsion spring and is elastically rotatably connected thereto. The agitator is installed in the bottle tube and is rotatably connected thereto. A ratchet is provided on the turntable. A ratchet strip cooperating with the ratchet is provided on the edge of the inner end surface of the bottle cap. A center tube is provided on the lower end surface of the bottle cap. The turntable is sleeved on the center tube and is slidably and rotatably connected thereto. The surface of the turntable is frosted.

[0007] As a preferred specimen sampling device for medical testing of the present invention, the lower end face of the turntable is provided with a first toothed disc, the front end of the agitator is provided with a second toothed disc cooperating with the first toothed disc, and the lower end face of the second toothed disc is provided with a stirring blade.

[0008] As a preferred specimen sampling device for medical testing based on the present invention, the upper end surface of the slider is an arc structure, the side end surface of the slider is provided with a sliding hole, the puncture needle is installed in the sliding hole and is slidably connected to the slider, a limiting rod is provided at the bottom of the sliding hole, and a first limiting claw is provided at the bottom of the puncture needle.

[0009] As a preferred specimen sampling device for medical testing based on the present invention, a second rotating shaft is arranged at the center of the limit rod, the limit rod is slidably connected to the slider through the second rotating shaft, a hidden groove is arranged at the bottom of the mounting groove, a rotatably connected pressure rod is arranged in the hidden groove, a traction rope fixed to the bottom of the limit rod is arranged at the bottom of the pressure rod, a fourth spring is arranged between the limit rod and the side wall of the slider, the lower end face of the first limit claw is an inclined structure, the top of the limit rod is an inclined structure with the same inclination angle as the bottom face of the first limit claw, and the angle between the pressure rod and the horizontal plane is 45-60°.

[0010] As a preferred specimen sampling device for medical testing based on the present invention, the puncture needle is a hollow structure, the side wall of the puncture needle is provided with a blood discharge hole, a contraction section is provided inside the puncture needle, the side wall of the contraction section is provided with a drug suction hole, an anticoagulant chamber is provided inside the bottle cap, a first rubber membrane is provided at the upper and lower ends of the anticoagulant chamber, and an expansion portion is provided at the tail of the puncture needle.

[0011] As a preferred specimen sampling device for medical testing based on the present invention, the diameter of the bottle cap is larger than the diameter of the bottle tube, the side wall of the mounting groove is provided with a buckle, the center of the buckle is provided with a first rotating shaft, the buckle is rotatably connected to the positioning frame via the rotating shaft, one end of the buckle is provided with a second limiting claw cooperating with the bottle cap, and the end of the buckle away from the second limiting claw is provided with a third spring.

[0012] As a preferred specimen sampling device for medical testing of the present invention, a needle hole is provided at the center of the turntable, and a second rubber membrane is provided at the bottom of the needle hole.

[0013] As a preferred specimen sampling device for medical testing of the present invention, the upper end surface of the positioning frame is provided with a blocking rod and a limiting plate, and the bottom of the positioning frame is provided with a taking-out groove.

[0014] As a preferred specimen sampling device for medical testing of the present invention, the side wall of the bottle tube is provided with a piston hole, a fifth spring and a piston rod are provided in the piston hole, a push plate is provided on the outer side of the piston rod, and the push plate is elastically slidably connected to the bottle tube through a spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention cooperates with the positioning frame, the slider, the puncture needle, the first spring, the second spring and the buckle, so that the vacuum blood collection tube can be loaded into the positioning frame by pressing with one hand. After installation, the puncture needle automatically punctures the vacuum blood collection tube to collect blood. After the blood collection is completed, the buckle can be pressed to quickly pop out the vacuum blood collection tube, allowing medical staff to use one hand to stabilize the patient's blood collection site while using the other hand to quickly and accurately complete the installation and removal of the blood collection bottle, which greatly simplifies the operation process and saves time. On the one hand, it reduces the risk of accidental movement or falling off of the blood collection needle due to improper operation of both hands. On the other hand, the installation and removal of the blood collection bottle are designed with a special locking and release mechanism to ensure the stability of the operation and avoid injuries or contamination caused by accidental falling off of the blood collection bottle during operation. In addition, one-handed operation also allows medical staff to better focus on the patient's condition and improves the overall safety of the operation. 2. The present invention sets an anticoagulant chamber in the blood collection bottle and designs specific drug suction holes and blood discharge holes to ensure that the anticoagulant can be accurately added to the blood at the same time as the blood enters the blood collection bottle, thereby avoiding the problem of blood sample coagulation caused by uneven mixing. The agitator design cleverly utilizes the mechanical structure inside the blood collection bottle. When the blood collection needle pierces the blood collection bottle, the internal stirring mechanism is triggered, so that the anticoagulant can be quickly and evenly mixed with the blood. This automated mixing method is more efficient and uniform than traditional manual shaking, ensuring the quality and consistency of each blood sample. Anticoagulants play an important role in preventing blood coagulation, especially in large-scale blood collection. If the anticoagulant and blood cannot be fully mixed in time, it is easy to cause partial coagulation of the blood, affecting subsequent test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 Middle AA section; Figure 4 An exploded view of the vacuum blood collection tube of the present invention; Figure 5 For the present invention Figure 2 Enlarged view of point C in the middle; Figure 6 For the present invention Figure 2 BB cross-section of a medium vacuum blood collection tube; Figure 7 It is a schematic diagram of the front cross-sectional structure of the vacuum blood collection tube of the present invention; Figure 8 It is a schematic diagram of the structure of the turntable of the present invention; Fig. 9 It is a schematic diagram of the sealing cover structure of the present invention; Fig.10 It is a schematic diagram of the structure of the agitator of the present invention; Fig.11 is a front cross-sectional view of the puncture needle of the present invention; Fig.12 This is a front view of the bottle tube and bottle cap of the present invention in a matching state; Fig.13 It is a top cross-sectional view of the bottle tube of the present invention.

[0017] In the figure: 1. vacuum blood collection tube; 101. bottle tube; 1011. push plate; 1012. piston rod; 1013. fifth spring; 1014. piston hole; 102. bottle cap; 1021. ratchet strip; 1022. center tube; 1023. anticoagulant chamber; 1024. first rubber membrane; 103. stirrer; 1031. stirring blade; 1032. second toothed disc; 104. turntable; 1041. ratchet; 1042. needle hole; 1043. second rubber membrane; 1044. first toothed disc; 105. torsion spring; 2. blood collection needle; 3. fixer; 301. positioning frame; 3011. joint; 3012. dark groove ; 3013, pressure rod; 3014, installation groove; 3015, blocking rod; 3016, limiting plate; 3017, removal groove; 3018, traction rope; 302, slider; 3021, sliding hole; 3022, limiting rod; 30221, second rotating shaft; 3023, fourth spring; 303, puncture needle; 3031, hose; 3032, blood discharge hole; 3033, contraction section; 3034, drug suction hole; 3035, first limiting claw; 3036, expansion part; 304, first spring; 305, second spring; 306, buckle; 3061, second limiting claw; 3062, first rotating shaft; 3063, third spring. DETAILED DESCRIPTION

[0018] See also Figure 1-Figure 11A specimen sampling device for medical testing includes a vacuum blood collection tube 1, a blood collection needle 2 and a fixture 3. The vacuum blood collection tube 1 includes a bottle tube 101 and a bottle cap 102. The fixture 3 includes a positioning frame 301, a slider 302, a puncture needle 303, a first spring 304, a second spring 305 and a buckle 306. The upper end surface of the positioning frame 301 is provided with a mounting groove 3014. The vacuum blood collection tube 1 is detachably installed in the mounting groove 3014. The slider 302 is installed in the mounting groove 3014 and is elastically slidably connected to the positioning frame 301 through the first spring 304. The puncture needle 303 is installed in the slider 302 and is elastically slidably connected to the positioning frame 301 through the second spring 305. The blood collection needle 2 is detachably installed on the fixture 3. A hose 3031 is provided between the blood collection needle 2 and the puncture needle 303.

[0019] Furthermore, the vacuum blood collection tube 1 also includes an agitator 103, a turntable 104 and a torsion spring 105. The turntable 104 is installed in the bottle cap 102 through the torsion spring 105 and is elastically rotatably connected thereto. The agitator 103 is installed in the bottle tube 101 and is rotatably connected thereto. A ratchet 1041 is provided on the turntable 104. A ratchet strip 1021 cooperating with the ratchet 1041 is provided on the inner end surface edge of the bottle cap 102. A center tube 1022 is provided on the lower end surface of the bottle cap 102. The turntable 104 is sleeved on the center tube 1022 and is slidably and rotatably connected thereto. The surface of the turntable 104 is frosted.

[0020] Furthermore, the turntable 104 can only rotate in one direction under the cooperation of the ratchet 1041 and the pawl bar 1021, so that the turntable 104 rotates elastically to store energy. When the turntable 104 slides downward under the action of the puncture needle 303, the pawl bar 1021 loses its restricting effect on the ratchet 1041, so that the turntable 104 can rotate under the resetting action of the torsion spring 105, and the surface of the central axis is frosted, which increases the friction resistance between the central axis and the turntable 104 and limits the rotation speed of the turntable 104.

[0021] Furthermore, a first toothed disc 1044 is disposed on the lower end surface of the rotating disc 104 , a second toothed disc 1032 cooperating with the first toothed disc 1044 is disposed on the front end of the agitator 103 , and a stirring blade 1031 is disposed on the lower end surface of the second toothed disc 1032 .

[0022] When the turntable 104 moves toward the agitator 103 under the action of the puncture needle 303, the first toothed disc 1044 and the second toothed disc 1032 engage, so that the turntable 104 drives the agitator 103 to rotate, and the agitator 103 stirs the blood in the blood collection tube to fully mix the plasma and the anticoagulant, thereby eliminating the need for manual shaking by medical staff, thereby improving the blood collection time and avoiding the situation where a large amount of blood is collected and the blood is left standing for too long, the plasma is not mixed with the anticoagulant in time, causing the plasma to coagulate and affecting blood analysis.

[0023] Furthermore, the upper end surface of the slider 302 is an arc structure, and the side end surface of the slider 302 is provided with a sliding hole 3021. The puncture needle 303 is installed in the sliding hole 3021 and is slidably connected to the slider 302. A limiting rod 3022 is provided at the bottom of the sliding hole 3021, and a first limiting claw 3035 is provided at the bottom of the puncture needle 303.

[0024] When the bottle cap 102 of the vacuum blood collection tube 1 presses down the slider 302, the slider 302 is subjected to a horizontal force component, squeezing the first spring 304 to slide inwards, and at the same time, the limiting rod 3022 and the first limiting claw 3035 cooperate to drive the puncture needle 303 to slide inwards, so that the first puncture needle 303 squeezes the second spring 305 to store energy.

[0025] Furthermore, a second rotating shaft 30221 is arranged at the center of the limiting rod 3022, and the limiting rod 3022 is slidably connected to the slider 302 through the second rotating shaft 30221, a hidden groove 3012 is arranged at the bottom of the mounting groove 3014, a rotatably connected pressure rod 3013 is arranged in the hidden groove 3012, a traction rope 3018 fixed to the bottom of the limiting rod 3022 is arranged at the bottom of the pressure rod 3013, a fourth spring 3023 is arranged between the limiting rod 3022 and the side wall of the slider 302, the lower end face of the first limiting claw 3035 is a slope structure, the top of the limiting rod 3022 is a slope structure with the same inclination angle as the bottom face of the first limiting claw 3035, and the angle between the pressure rod 3013 and the horizontal plane is 45-60°.

[0026] When the vacuum blood collection tube 1 is installed in place, the bottom of the bottle tube 101 presses down the pressure rod 3013, so that the pressure rod 3013 pulls the traction rope 3018 under the action of the lever, thereby rotating the limit rod 3022. The limit rod 3022 is reduced in height during rotation, and the limiting effect on the first limit claw 3035 is lost, so that the puncture needle 303 is quickly inserted into the vacuum blood collection tube 1 under the resetting action of the second spring 305, so that the vacuum blood collection tube 1 can be installed with one hand. At the same time, the first rubber membrane 1024 and the second rubber membrane 1043 will push the turntable 104 to slide toward the end of the agitator 103 before puncturing the second rubber membrane 1043, so that the ratchet 1041 is separated from the ratchet bar 1021.

[0027] Furthermore, the puncture needle 303 is a hollow structure, and a blood discharge hole 3032 is provided on the side wall of the puncture needle 303. A contraction section 3033 is provided inside the puncture needle 303, and a drug suction hole 3034 is provided on the side wall of the contraction section 3033. An anticoagulant chamber 1023 is provided inside the bottle cap 102, and a first rubber membrane 1024 is provided at the upper and lower ends of the anticoagulant chamber 1023. An expansion portion 3036 is provided at the tail of the puncture needle 303.

[0028] When the puncture needle 303 is inserted into the vacuum blood collection tube 1 under the elastic force of the second spring 305, the drug suction part just stays in the anticoagulant chamber due to the action of the expansion part 3036, and blood is drawn into the bottle under the negative pressure of the vacuum blood collection tube 1. The blood enters the vacuum blood collection tube 1 through the blood collection needle 2, the hose 3031 and the puncture needle 303. When the blood flows through the contraction section 3033, the diameter suddenly decreases and the flow rate increases, thereby forming a negative pressure in the drug suction hole 3034, and the anticoagulant in the anticoagulant chamber 1023 is sucked into the vacuum blood collection tube 1. Since the anticoagulant flows with the blood, it is added to the blood in equal proportion, and the mixing effect is better.

[0029] Furthermore, the diameter of the bottle cap 102 is larger than the diameter of the bottle tube 101, and a buckle 306 is provided on the side wall of the mounting groove 3014. A first rotating shaft 3062 is provided at the center of the buckle 306. The buckle 306 is rotatably connected to the positioning frame 301 through the rotating shaft, and a second limiting claw 3061 cooperating with the bottle cap 102 is provided at one end of the buckle 306, and a third spring 3063 is provided at the end of the buckle 306 away from the second limiting claw 3061.

[0030] When the vacuum blood collection tube 1 is pressed into the installation groove 3014, the second limiting claw 3061 on the buckle 306 clamps the lower end of the bottle cap 102 to prevent the vacuum sampling bottle from being pushed by the slider 302, causing the puncture needle 303 to be unable to accurately pierce the vacuum blood collection tube 1. The buckle 306 structure of the elastic rotation connection allows the buckle 306 to be pressed near the third spring 3063 end after the blood collection is completed, so that the restriction on the vacuum blood collection tube 1 can be released, and the slider 302 pushes the vacuum blood collection tube 1 to slide toward the removal groove 3017 under the resetting action of the first spring 304, completing the separation of the puncture needle 303 and the vacuum blood collection tube 1, so that the removal of the vacuum blood collection tube 1 can be operated with one hand.

[0031] Furthermore, a needle hole 1042 is provided at the center of the rotating disk 104 , and a second rubber film 1043 is provided at the bottom of the needle hole 1042 .

[0032] When the puncture needle 303 passes through the first rubber membrane 1024, the second rubber membrane 1043 provides a certain resistance for the puncture needle 303, so that the puncture needle 303 drives the turntable 104 to slide downward. When the turntable 104 slides to fit with the agitator 103, the puncture needle 303 pierces the second rubber membrane 1043 and enters the vacuum blood collection tube 1.

[0033] Furthermore, a stopper rod 3015 and a limit plate 3016 are provided on the upper end surface of the positioning frame 301 , and a removal groove 3017 is provided on the bottom of the positioning frame 301 .

[0034] The stopper bar 3015 facilitates quick positioning of the vacuum blood collection tube 1 during installation. When the vacuum blood collection tube 1 is in contact with the stopper bar 3015, the top of the vacuum blood collection tube 1 is pressed, and its bottle cap 102 automatically catches the front end of the buckle 306. The limiting plate 3016 limits the ejection distance of the vacuum blood collection tube 1 to prevent it from being directly ejected after sampling. The design of the removal groove 3017 allows medical staff to lightly press the bottom of the vacuum blood collection tube 1 from top to bottom with their thumb to push it out of the removal groove 3017, and the palm of the hand just supports the bottom, which improves the convenience of removal.

[0035] When the device is used, the bottle cap 102 of the vacuum blood collection tube 1 is aligned with the mounting groove 3014 on the positioning frame 301, so that the bottom of the vacuum blood collection tube 1 fits with the blocking rod 3015, and then the blood collection needle 2 is inserted into the patient's arm. After the blood collection needle 2 is fixed, the bottle cap 102 end of the vacuum blood collection tube 1 is pressed to enter the mounting groove 3014, and then the bottom of the vacuum blood collection tube 1 is pressed to completely enter the mounting groove 3014. When the vacuum blood collection tube 1 is pressed into the mounting groove 3014, After the vacuum blood collection tube 101 is installed in place, the bottom of the bottle tube 101 presses down the pressing rod 3013, so that the pressing rod 3013 pulls the traction rope 3018 under the action of the lever, thereby causing the limiting rod 3022 to rotate. When the limiting rod 3022 rotates, the height is reduced, and the limiting effect on the first limiting claw 3035 is lost, so that the puncture needle 3022 is Under the reset action of the second spring 305, the puncture needle 303 is quickly inserted into the vacuum blood collection tube 1. When the puncture needle 303 passes through the first rubber membrane 1024, the second rubber membrane 1043 provides a certain resistance for the puncture needle 303, so that the puncture needle 303 drives the rotating disk 104 to slide downward. When the rotating disk 104 slides to fit with the agitator 103, the puncture needle 303 pierces the second rubber membrane 1043 and enters the vacuum blood collection tube 1, so that the rotating disk 104 drives the agitator 103 to rotate under the action of the torsion spring 105, so that the agitator 103 stirs the blood in the blood collection tube to fully mix the plasma and the anticoagulant. After the blood collection is completed, the end of the buckle 306 close to the third spring 3063 is pressed to release the restriction on the vacuum blood collection tube 1, so that the slider 302 pushes the vacuum blood collection tube 1 to slide toward the removal groove 3017 under the reset action of the first spring 304, and the puncture needle 303 is separated from the vacuum blood collection tube 1, so that the removal of the vacuum blood collection tube 1 can be operated with one hand.

[0036] See also Figure 1-Figure 13A specimen sampling device for medical testing includes a vacuum blood collection tube 1, a blood collection needle 2 and a fixture 3. The vacuum blood collection tube 1 includes a bottle tube 101 and a bottle cap 102. The fixture 3 includes a positioning frame 301, a slider 302, a puncture needle 303, a first spring 304, a second spring 305 and a buckle 306. The upper end surface of the positioning frame 301 is provided with a mounting groove 3014. The vacuum blood collection tube 1 is detachably installed in the mounting groove 3014. The slider 302 is installed in the mounting groove 3014 and is elastically slidably connected to the positioning frame 301 through the first spring 304. The puncture needle 303 is installed in the slider 302 and is elastically slidably connected to the positioning frame 301 through the second spring 305. The blood collection needle 2 is detachably installed on the fixture 3. A hose 3031 is provided between the blood collection needle 2 and the puncture needle 303.

[0037] Furthermore, a piston hole 1014 is provided on the side wall of the bottle tube 101, a fifth spring 1013 and a piston rod 1012 are provided in the piston hole 1014, a push plate 1011 is provided on the outer side of the piston rod 1012, and the push plate 1011 is elastically slidably connected to the bottle tube 101 through a spring.

[0038] After the vacuum blood collection tube 1 is evacuated, the piston slides into the piston hole 1014 under the action of air pressure to squeeze the fifth spring 1013. As sampling proceeds, the vacuum degree gradually decreases, and the piston rod 1012 pops out under the resetting action of the spring, causing the push plate 1011 to slide outward, thereby squeezing the buckle 306. When the vacuum degree of the vacuum blood collection tube 1 is insufficient, that is, when the blood collection reaches the calibration scale, the vacuum blood collection tube 1 automatically pops out without the need for the nurse to observe it all the time.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A specimen sampling device for medical testing, comprising a vacuum blood collection tube (1), a blood collection needle (2) and a fixer (3), characterized in that: The vacuum blood collection tube (1) comprises a bottle tube (101) and a bottle cap (102); the holder (3) comprises a positioning frame (301), a slider (302), a puncture needle (303), a first spring (304), a second spring (305) and a buckle (306); the upper end surface of the positioning frame (301) is provided with a mounting groove (3014); the vacuum blood collection tube (1) is detachably mounted in the mounting groove (3014); the slider (302) is mounted in the mounting groove (3014) and is elastically slidably connected to the positioning frame (301) via the first spring (304); the puncture needle (303) is mounted in the slider (302) and is elastically slidably connected to the positioning frame (301) via the second spring (305); the blood collection needle (2) is detachably mounted on the holder (3); and a hose (3031) is provided between the blood collection needle (2) and the puncture needle (303).

2. A specimen sampling device for medical testing according to claim 1, characterized in that: The vacuum blood collection tube (1) further comprises a stirrer (103), a turntable (104) and a torsion spring (105); the turntable (104) is mounted in the bottle cap (102) via the torsion spring (105) and is elastically rotatably connected thereto; the stirrer (103) is mounted in the bottle tube (101) and is rotatably connected thereto; the turntable (104) is provided with ratchet teeth (1041); the inner end surface edge of the bottle cap (102) is provided with a ratchet bar (1021) that cooperates with the ratchet teeth (1041); the lower end surface of the bottle cap (102) is provided with a central tube (1022); the turntable (104) is sleeved on the central tube (1022) and is slidably and rotatably connected thereto; the surface of the turntable (104) is frosted.

3. A specimen sampling device for medical testing according to claim 2, characterized in that: The lower end surface of the rotating disk (104) is provided with a first toothed disk (1044), the front end of the stirrer (103) is provided with a second toothed disk (1032) that cooperates with the first toothed disk (1044), and the lower end surface of the second toothed disk (1032) is provided with a stirring blade (1031).

4. A specimen sampling device for medical testing according to claim 1, characterized in that: The upper end surface of the slider (302) is an arc structure, the side end surface of the slider (302) is provided with a sliding hole (3021), the puncture needle (303) is installed in the sliding hole (3021) and is slidably connected to the slider (302), a limiting rod (3022) is provided at the bottom of the sliding hole (3021), and a first limiting claw (3035) is provided at the bottom of the puncture needle (303).

5. A specimen sampling device for medical testing according to claim 4, characterized in that: A second rotating shaft (30221) is arranged at the center of the limiting rod (3022), and the limiting rod (3022) is slidably connected to the slider (302) via the second rotating shaft (30221); a hidden groove (3012) is arranged at the bottom of the installation groove (3014), a rotatably connected pressure rod (3013) is arranged in the hidden groove (3012), a traction rope (3018) fixed to the bottom of the limiting rod (3022) is arranged at the bottom of the pressure rod (3013), and a fourth spring (3023) is arranged between the limiting rod (3022) and the side wall of the slider (302).

6. A specimen sampling device for medical testing according to claim 1, characterized in that: The puncture needle (303) is a hollow structure, a side wall of the puncture needle (303) is provided with a blood discharge hole (3032), a contraction section (3033) is provided inside the puncture needle (303), a side wall of the contraction section (3033) is provided with a drug suction hole (3034), an anticoagulant chamber (1023) is provided inside the bottle cap (102), a first rubber membrane (1024) is provided at the upper and lower ends of the anticoagulant chamber (1023), and an expansion section (3036) is provided at the tail of the puncture needle (303).

7. A specimen sampling device for medical testing according to claim 1, characterized in that: The diameter of the bottle cap (102) is greater than the diameter of the bottle tube (101); a buckle (306) is provided on the side wall of the mounting groove (3014); a first rotating shaft (3062) is provided at the center of the buckle (306); the buckle (306) is rotatably connected to the positioning frame (301) via the rotating shaft; a second limiting claw (3061) cooperating with the bottle cap (102) is provided at one end of the buckle (306); and a third spring (3063) is provided at the end of the buckle (306) away from the second limiting claw (3061).

8. The specimen sampling device for medical testing according to claim 1, characterized in that: A needle hole (1042) is provided at the center of the rotating disk (104), and a second rubber membrane (1043) is provided at the bottom of the needle hole (1042).

9. A specimen sampling device for medical testing according to claim 1, characterized in that: The upper end surface of the positioning frame (301) is provided with a blocking rod (3015) and a limiting plate (3016), and the bottom of the positioning frame (301) is provided with a taking-out groove (3017).

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