Sampling device for blood detection and sampling method thereof

Abstract

The invention discloses a sampling device for blood detection and a sampling method thereof, and belongs to the technical field of blood detection. A sampling device for blood detection comprises a box body and further comprises a rotating disc rotationally arranged in the box body, a plurality of sets of rotating grooves are evenly formed in the rotating disc, sleeves are rotationally arranged in the multiple sets of rotating grooves, and liquid storage cavities are formed in the sleeves; the heating assembly is arranged in the box body, a heating pipe of a spiral structure is arranged in the sleeve, one end of the heating pipe is communicated with the output end of the heating assembly, and the other end of the heating pipe is communicated with the interior of the box body; quantitative liquid is input into the liquid storage cavity through the metering pump, so that the weight of the blood collection tube in the sleeve at the current position is kept consistent with the weight of the blood collection tube in the sleeve at the relative position as much as possible, self weight balancing is achieved, and the detection efficiency is improved; the blood collection tube placed in the sleeve can be heated, heat isolation of the sleeve is reduced, and the heating efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of blood testing, and in particular to a sampling device for blood testing and a sampling method thereof. Background Art

[0002] In the blood testing sampling technology, whole blood centrifugation is an important experimental technique, which uses centrifugal force to separate whole blood into different components of plasma, red blood cells and white blood cells. The steps of whole blood centrifugation include collecting whole blood samples, anticoagulation treatment, centrifugation, separating plasma, collecting red blood cells and separating white blood cells. The principle of whole blood centrifugation is to use centrifugal force to separate different components in the blood. Centrifugal force is the rotational force generated by the centrifuge, which can make substances of different weights and densities precipitate or float in the centrifuge tube. Since the density of plasma is lower, it will float to the top layer of the centrifuge tube during the centrifugation process, while red blood cells will settle to the bottom of the centrifuge tube due to their higher density.

[0003] When using an existing centrifuge, the blood collection tube placed in the casing is usually counterweighted manually to make the centrifugal force on the centrifuge turntable relatively balanced. The centrifuge itself is difficult to counterweight autonomously, which affects the user experience. Moreover, when the ambient temperature is low, the centrifuge has a poor heating effect on the blood collection tube placed in the casing. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that centrifuges are difficult to configure independently and have poor heating effects on blood collection tubes, and to propose a blood testing sampling device and a sampling method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A sampling device for blood testing comprises a box body, and also includes: a turntable rotatably arranged in the box body, a plurality of groups of rotating grooves are evenly arranged on the turntable, sleeves are rotatably arranged in the plurality of rotating grooves, a liquid storage cavity is arranged in the sleeve, and a liquid supply part for supplying liquid to the liquid storage cavity is arranged in the box body; a heating component is arranged in the box body, a heating tube with a spiral structure is arranged in the sleeve, one end of the heating tube is connected to the output end of the heating component, and the other end of the heating tube is connected to the box body.

[0006] In order to facilitate the driving of the turntable to rotate for centrifugal separation, preferably, a separation chamber is provided in the casing, the turntable is rotatably arranged in the separation chamber, a driving chamber is provided at the bottom of the casing, a rotating shaft is fixedly provided at the bottom of the turntable, a first gear is fixedly provided on one end of the rotating shaft extending into the driving chamber, and a motor is fixedly provided in the driving chamber, and a second gear meshing with the first gear is fixedly provided at the output end of the motor.

[0007] In order to facilitate the delivery of liquid to the liquid storage chamber, the liquid supply part further includes a water tank fixedly arranged in the driving chamber, a metering pump is fixedly arranged in the driving chamber, one end of the metering pump is connected to the water tank, and a liquid inlet pipe is opened in the sleeve, one end of the liquid inlet pipe is connected to the bottom of the liquid storage chamber, and the other end of the metering pump is connected to the other end of the liquid inlet pipe through a distributor.

[0008] In order to transport liquid during the rotation of the rotating shaft, the distributor further includes an oil separation shaft fixedly arranged in the driving bin, a plurality of second pipes are provided in the oil separation shaft, a plurality of branch pipes with valves are fixedly arranged at the other end of the metering pump, and the branch pipes are respectively connected with the corresponding second pipes, an oil separation hole is provided in the rotating shaft, one end of the oil separation shaft is rotatably arranged in the oil separation hole, and a plurality of first annular grooves are provided on the inner wall of the oil separation hole, a first sealing ring is fixedly provided on the top and bottom of the plurality of first annular grooves, a plurality of second pipes are respectively connected with the corresponding first annular grooves, a plurality of first pipes are provided in the rotating shaft, one end of the first pipe is connected with the first annular groove, and the other end of the first pipe is connected with the liquid inlet pipe.

[0009] Furthermore, a negative pressure groove is opened in the box body, an annular seat is rotatably arranged in the negative pressure groove, the inner wall of the annular seat is fixedly connected to the rotating shaft, and a plurality of groups of wind blades are fixedly arranged on the outer wall of the annular seat, an air inlet groove is opened on the inner wall of the separation bin, and one end of the negative pressure groove is connected to the air inlet groove through an air inlet pipe.

[0010] Furthermore, the heating assembly includes a first grinding block in an annular structure, which is fixedly arranged at the bottom of the negative pressure groove, and a second grinding block is fixedly arranged at the bottom of the wind blade, the first grinding block and the second grinding block are abutted against each other, and an exhaust hood connected to the other end of the negative pressure groove is provided in the box body, a second annular groove is provided in the rotating shaft, the exhaust hood is connected to the second annular groove, a second sealing ring is fixedly arranged at the bottom and top of the second annular groove, and an exhaust pipe is provided in the rotating shaft, and the exhaust pipe is connected to one end of the heating pipe.

[0011] Furthermore, a diversion chamber is provided in the turntable, and one end of the exhaust pipe away from the second annular groove is connected to the diversion chamber. A rotating shaft is fixedly arranged on the sleeve, and the rotating shaft is rotatably arranged in the rotating groove. A third pipe is provided in the rotating shaft, and one end of the third pipe is connected to one end of the heating pipe. A plurality of groups of diversion pipes are fixedly arranged in the diversion chamber, and the plurality of groups of diversion pipes are respectively connected to the other end of the third pipe.

[0012] Furthermore, an adjusting column is fixedly provided on the top of the turntable, a receiving groove is provided in the adjusting column, a slider is lifted and lowered in the receiving groove, a plurality of sets of rotating seats are fixedly provided on the outer wall of the slider, and a plurality of sets of sliding grooves connected with the receiving grooves are provided on the adjusting column, the plurality of sets of rotating seats are slidably provided in the sliding grooves respectively, a rotating plate is fixedly provided on the outer wall of the sleeve, the rotating plate is rotatably connected with the rotating seat through a connecting rod, and a lifting part for driving the slider to lift and lower is provided in the turntable.

[0013] Furthermore, the lifting part includes a second piston fixedly arranged in the turntable, the output end of the second piston is fixedly connected to the bottom of the slider, a groove body is opened in the wind blade, a thermal bimetallic strip with an arc-shaped structure is fixedly arranged in the groove body, both ends of the thermal bimetallic strip are fixedly connected to the second grinding block, a first piston is fixedly arranged in the wind blade, the output end of the first piston is connected to the input end of the second piston through a fourth pipe, and a push plate is fixedly arranged on one end of the first piston input end extending into the groove body, and the bottom of the push plate is against the thermal bimetallic strip.

[0014] A sampling method for a blood testing sampling device further comprises the following steps: Step 1: First, you need to collect a whole blood sample and use the corresponding blood collection tube according to different test items; Step 2: Place the blood collection tube in the cannula and set the centrifugal temperature and centrifugal angle; Step 3: After centrifugation, use a pipette or sterile syringe to carefully transfer the upper layer of plasma or serum to a clean test tube.

[0015] Compared with the prior art, the present invention provides a blood testing sampling device and a sampling method thereof, which have the following beneficial effects: 1. The blood sampling device for testing inputs a fixed amount of liquid into the liquid storage chamber through a fixed amount pump, so that the weight of the blood collection tube in the cannula at the current position is kept consistent with the weight of the blood collection tube in the cannula at the relative position as much as possible, so as to achieve self-weighting and improve the testing efficiency; 2. The blood sampling device for testing has a spiral heating tube in the sleeve. When hot air is introduced into the heating tube, the blood collection tube placed in the sleeve can be heated, thereby improving the heating effect, reducing the heat insulation of the sleeve, and improving the heating efficiency; 3. When the sampling device for blood testing rotates in the negative pressure tank with the annular seat and the wind blades through the rotating shaft, the gas in the separation chamber will enter the air inlet groove, then enter the negative pressure tank through the air inlet pipe, and finally return to the separation chamber through the exhaust hood, thereby realizing the circulation of gas in the separation chamber, which helps to improve the heating effect and the uniformity of heating.

[0016] The parts not involved in the device are the same as the prior art or can be implemented by using the prior art. The present invention inputs a certain amount of liquid into the liquid storage chamber through a quantitative pump, so that the weight of the blood collection tube in the sleeve at the current position is kept consistent with the weight of the blood collection tube in the sleeve at the relative position as much as possible, thereby achieving self-weighting and improving detection efficiency. A heating tube with a spiral structure is provided in the sleeve, which can heat the blood collection tube placed in the sleeve, reduce the sleeve's insulation against heat, and improve heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a blood testing sampling device proposed by the present invention; Figure 2 A cross-sectional view of a blood testing sampling device proposed by the present invention; Figure 3 This is a schematic diagram of the structure of an adjusting column of a sampling device for blood testing proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a wind blade of a blood testing sampling device proposed by the present invention; Figure 5 A blood testing sampling device proposed by the present invention Figure 4 A magnified view of part A; Figure 6 This is a schematic diagram of the structure of a turntable of a blood testing sampling device proposed by the present invention; Figure 7 This is a schematic structural diagram of a cannula of a blood testing sampling device proposed by the present invention.

[0018] In the figure: 1, box body; 101, separation chamber; 102, drive chamber; 103, negative pressure groove; 104, air intake pipe; 105, exhaust hood; 106, air intake groove; 2, turntable; 201, rotating shaft; 202, first gear; 203, rotating groove; 204, annular seat; 205, wind blade; 206, first pipeline; 207, first annular groove; 3, oil distribution shaft; 301, water tank; 302, quantitative pump; 303, branch pipe; 304, second pipeline; 4, sleeve; 401, rotating shaft; 402, placement hole; 403, liquid storage cavity; 404, heating pipe; 405, Liquid inlet pipe; 406, rotating plate; 407, third pipeline; 408, exhaust pipe; 5, adjusting column; 501, containing groove; 502, slide groove; 503, slider; 504, rotating seat; 505, connecting rod; 6, first grinding block; 601, second grinding block; 602, groove body; 603, thermal bimetallic strip; 604, first piston; 605, push plate; 606, fourth pipeline; 607, second piston; 7, box cover; 701, transparent plate; 8, diversion chamber; 801, exhaust pipe; 802, second annular groove; 9, air bag; 901, fifth pipeline; 10, pressure sensor. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0021] Reference Figure 1-Figure 7A sampling device for blood testing includes a box body 1, a box cover 7 is arranged on the top of the box body 1, one end of the box cover 7 is rotatably arranged on the box body 1 through a hinge, and the other end of the box cover 7 is fixed to the box body 1 through a buckle, and a sealing gasket is fixedly arranged in the box cover 7, and the end of the sealing gasket away from the box cover 7 is abutted against the top of the box body 1. When in use, the influence of the external environment temperature on the box body 1 can be reduced, and the use effect can be improved. In addition, a transparent plate 701 is fixedly arranged on the box cover 7 to facilitate the observation of the separation situation in the box body 1. The invention also includes: a turntable 2 is rotatably arranged in the housing 1, a plurality of groups of rotating grooves 203 are evenly arranged on the turntable 2, two to twelve groups of rotating grooves 203 are arranged, and here, we prefer six groups, sleeves 4 are rotatably arranged in the six groups of rotating grooves 203, a liquid storage cavity 403 is arranged in the sleeve 4, a liquid supply part for supplying liquid to the liquid storage cavity 403 is arranged in the housing 1, a pressure sensor 10 is fixedly arranged on the top end face of the sleeve 4, a tube cover is arranged on the top of the blood collection tube, the bottom end face of the tube cover is abutted against the top end face of the pressure sensor 10, a placement hole 402 for placing the blood collection tube is arranged in the sleeve 4, and when in use, the blood collection tube is placed in the placement hole 402. 2, the pressure sensor 10 can detect the weight of the blood collection tube, and then input a certain amount of liquid into the liquid storage chamber 403 through the quantitative pump 302, so that the weight in the sleeve 4 at the current position is kept consistent with the weight in the sleeve 4 at the relative position as much as possible, to achieve self-weighting and improve the detection efficiency; here, the staff can also weigh the blood collection tube, and then input its weight into the centrifuge through the control panel in sequence according to the placement position, and then the centrifuge analyzes the input weight and starts the quantitative pump 302 to transport liquid to the sleeve 4 with a lighter weight, so that the weight of the sleeve 4 at the relative position is kept consistent as much as possible, to improve the use effect of the turntable 2, and it can also be configured by itself. A heating component is provided in the box body 1. In winter or when the outside temperature is low, or when heating is required, the blood collection tube placed in the box body 1 can be appropriately heated by the heating component. A heating tube 404 with a spiral structure is provided in the sleeve 4. One end of the heating tube 404 is connected to the output end of the heating component, and the other end of the heating tube 404 is connected to the box body 1. When in use, the blood collection tube placed in the sleeve 4 can be heated by introducing hot air into the heating tube 404 through the heating tube 404 with a spiral structure provided in the sleeve 4, thereby improving the heating effect, reducing the insulation of the sleeve 4 to heat, and improving the heating efficiency.

[0022] Reference Figure 2A separation chamber 101 is provided in the casing 1, and the turntable 2 is rotatably arranged in the separation chamber 101. A driving chamber 102 is provided at the bottom of the casing 1, and a rotating shaft 201 is fixedly provided at the bottom of the turntable 2. A first gear 202 is fixedly provided at one end of the rotating shaft 201 extending into the driving chamber 102, and a motor is fixedly provided in the driving chamber 102, and a second gear meshing with the first gear 202 is fixedly provided at the output end of the motor. When in use, the motor is started to rotate the second gear, and the second gear is meshed with the first gear 202, so as to drive the rotating shaft 201 and the turntable 2 to rotate, thereby achieving a centrifugal separation effect.

[0023] Reference Figure 2 and Figure 3 Here, we prefer the liquid supply part as follows: a water tank 301 is fixedly arranged in the driving chamber 102, and pure water or salt water, etc., preferably pure water, can be placed in the water tank 301; a metering pump 302 is fixedly arranged in the driving chamber 102, one end of the metering pump 302 is connected to the water tank 301, and a liquid inlet pipe 405 is opened in the sleeve 4, one end of the liquid inlet pipe 405 is connected to the bottom of the liquid storage chamber 403, and the other end of the metering pump 302 is connected to the other end of the liquid inlet pipe 405 through a distributor. When in use, by starting the metering pump 302 , the liquid in the water tank 301 can be pumped out, and then the liquid is quantitatively transported to the corresponding liquid inlet pipe 405 through the distributor, so that the liquid enters the liquid storage chamber 403, increasing the weight of the current sleeve 4. After use, the quantitative pump 302 is started to rotate in the opposite direction, and the liquid in the liquid storage chamber 403 can be pumped out through the liquid inlet pipe 405 and transported to the water tank 301, thereby improving the use effect and making the initial weight of all sleeves 4 consistent, that is, the weight of all sleeves 4 when no blood collection tubes are placed is the same, which helps to reduce the number of adjustments and improve the detection efficiency.

[0024] Reference Figure 2-Figure 4Here, we design the distributor as follows: an oil distribution shaft 3 is fixedly arranged in the driving bin 102, a plurality of groups of second pipes 304 are provided in the oil distribution shaft 3, two to twelve groups of the second pipes 304 are provided, preferably six groups, a plurality of groups of branch pipes 303 with valves are fixedly arranged at the other end of the metering pump 302, the valves are preferably solenoid valves, the branch pipes 303 are also preferably six groups, one end of the branch pipes 303 away from the metering pump 302 is respectively connected to the corresponding second pipes 304, an oil distribution hole is provided in the rotating shaft 201, one end of the oil distribution shaft 3 is rotatably arranged in the oil distribution hole, and a plurality of groups of first annular grooves 207 are provided on the inner wall of the oil distribution hole, two to twelve groups of the first annular grooves 207 are provided, preferably six groups, and the six groups of first annular grooves 207 are arranged along the rotating shaft 201 The axes are evenly spaced up and down, and first sealing rings are fixedly arranged at the top and bottom of the six groups of first annular grooves 207, and the six groups of second pipes 304 away from the branch pipes 303 are respectively connected to the corresponding first annular grooves 207. A plurality of groups of first pipes 206 are opened in the rotating shaft 201. The first pipes 206 are also preferably six groups, corresponding to the six groups of first annular grooves 207 one by one, and one end of the six groups of first pipes 206 is connected to the corresponding first annular grooves 207, and the other ends of the six groups of first pipes 206 are respectively connected to the corresponding liquid inlet pipes 405. When in use, the metering pump 302 is respectively connected to the liquid storage chamber 403 through the distributor, so that liquid can be transported into the liquid storage chamber 403 even when the turntable 2 is rotating, thereby improving the use effect.

[0025] Reference Figure 2-Figure 4 A negative pressure groove 103 is provided in the box body 1, and an annular seat 204 is rotatably provided in the negative pressure groove 103. The inner wall of the annular seat 204 is fixedly connected to the rotating shaft 201, and a plurality of groups of wind blades 205 are fixedly provided on the outer wall of the annular seat 204. The wind blades 205 are provided in two to ten groups, preferably five groups, and are evenly distributed on the outer wall of the annular seat 204. An air inlet groove 106 is provided on the inner wall of the separation chamber 101, and one end of the negative pressure groove 103 is connected to the air inlet groove 106 through the air inlet groove 106. The tube 104 is connected with the air inlet groove 106. When in use, when the rotating shaft 201 carries the annular seat 204 and the wind blades 205 to rotate in the negative pressure groove 103, the gas in the separation chamber 101 will enter the air inlet groove 106, and then enter the negative pressure groove 103 through the air inlet pipe 104, and finally return to the separation chamber 101 through the exhaust hood 105, thereby realizing the circulation of gas in the separation chamber 101, which helps to improve the heating effect and improve the uniformity of heating.

[0026] Reference Figure 4 and Figure 5The heating component can use a heating wire to heat the gas in the negative pressure groove 103. Here, the heating component is preferably a first grinding block 6 with an annular structure, which is fixedly arranged at the inner bottom of the negative pressure groove 103. A second grinding block 601 is fixedly arranged at the bottom of the multiple groups of wind blades 205, and the first grinding block 6 is abutted against the second grinding block 601. An exhaust hood 105 connected to the other end of the negative pressure groove 103 is opened in the box body 1, a second annular groove 802 is opened in the rotating shaft 201, and the exhaust hood 105 is connected to the second annular groove 802. A second sealing ring is fixedly arranged at the bottom and top of the second annular groove 802, and an exhaust pipe 801 is opened in the rotating shaft 201. The exhaust pipe 801 is connected to the heating element 103. One end of the heat pipe 404 is connected. When in use, the wind blade 205 can cause the second grinding block 601 to generate friction with the first grinding block 6 during rotation, and then generate heat in the negative pressure groove 103. When the gas flows in the negative pressure groove 103, the gas can be properly heated and heated. Then, the heated gas passes through the exhaust hood 105 and enters the heating pipe 404. It flows in the spiral heating pipe 404. In this process, the heating effect of the blood collection tube in the sleeve 4 can be improved, and the insulation of the sleeve 4 to heat when heating from the outside can be reduced, thereby improving the heating effect. Finally, it flows out of the heating pipe 404 and enters the separation chamber 101. Driven by the wind blade 205, the gas circulates and flows, further improving the heating effect.

[0027] Reference Figure 3 and Figure 7 A diverter chamber 8 is provided in the turntable 2, and one end of the exhaust pipe 801 away from the second annular groove 802 is connected to the diverter chamber 8. Rotating shafts 401 are fixedly provided on both sides of the sleeve 4, and the rotating shaft 401 is rotatably provided in the rotating groove 203, and a third pipe 407 is provided in the rotating shaft 401 on one side, and one end of the third pipe 407 is connected to one end of the heating pipe 404. A plurality of groups of diverter tubes are fixedly provided in the diverter chamber 8, and the diverter tubes are provided with two to twelve groups, preferably six groups, and the six groups of diverter tubes are respectively connected to the other ends of the six groups of third pipes 407. When in use, the diverter chamber 8 is provided in the turntable 2, so that heat can flow to the six groups of sleeves 4 through the diverter tubes respectively, so as to achieve synchronous heating of the six groups of sleeves 4 as much as possible, keep their temperatures consistent, and improve the use effect.

[0028] Reference Figure 2-Figure 6An adjusting column 5 is fixedly arranged on the top of the turntable 2, and a receiving groove 501 is opened in the adjusting column 5. A slider 503 is lifted and lowered in the receiving groove 501. A plurality of rotating seats 504 are fixedly arranged on the outer wall of the slider 503. The rotating seats 504 are arranged in two to twelve groups, preferably six groups, and a plurality of sliding grooves 502 connected to the receiving grooves 501 are opened on the adjusting column 5. The sliding grooves 502 are also preferably six groups, corresponding to the rotating seats 504 one by one, and the sliding grooves 502 are evenly distributed on the circumference of the adjusting column 5. The six rotating seats 504 are arranged on the outer wall of the slider 503. The movable seats 504 are slidably arranged in the corresponding slide grooves 502 respectively, and a rotating plate 406 is fixedly arranged on the outer walls of the six groups of sleeves 4. The rotating plate 406 is rotatably connected to the corresponding rotating seat 504 through a connecting rod 505, and a lifting part for driving the slider 503 to rise and fall is arranged in the turntable 2. When in use, the slider 503 is driven to rise along the accommodating groove 501 through the lifting part, and the sleeve 4 can be rotated around the rotating shaft 401 at a certain angle through the connecting rod 505, so as to adjust the angle of the sleeve 4 when it is centrifugal, thereby improving the use effect. An exhaust pipe 408 connected to the placement hole 402 is provided in the sleeve 4, and an air bag 9 is provided in the slide groove 502. The two ends of the air bag 9 are fixedly connected to the inner bottom of the slide groove 502 and the bottom of the rotating seat 504 respectively, and a fifth pipe 901 is fixedly provided on the air bag 9, and the fifth pipe 901 is connected to the exhaust pipe 408. When the rotating seat 504 rises to adjust the angle of the sleeve 4, the air bag 9 can be pulled through the fifth pipe 901 and the exhaust pipe 408 to exhaust air from the placement hole 402, so that a certain negative pressure effect is generated in the placement hole 402, which can improve the stability of the blood collection tube placed in the placement hole 402.

[0029] Reference Figure 2-Figure 5The lifting part can be driven by a cylinder, a hydraulic cylinder or an electric telescopic cylinder to lift the slider 503. Here, we design the lifting part as follows: a second piston 607 is fixedly arranged in the turntable 2, and the output end of the second piston 607 is fixedly connected to the bottom of the slider 503. A slot 602 is provided in the wind blade 205, and a thermal bimetallic strip 603 with an arc structure is fixedly arranged in the slot 602. The thermal bimetallic strip 603 is made of a composite material and deforms with temperature changes. The principle is that due to the different thermal expansion coefficients of the component layers, when the temperature changes, the active layer (made of manganese-nickel-copper alloy, nickel-chromium-iron alloy, nickel-manganese-iron alloy and nickel, etc.) deforms. It has a higher expansion coefficient than the passivation layer (made of nickel-iron alloy, etc.). It has a lower expansion coefficient, so that the entire bimetallic strip will bend toward the passive layer side, and the curvature of the composite material will change to produce deformation. Both ends of the thermal bimetallic strip 603 are fixedly connected to the second grinding block 601, and a first piston 604 is fixedly arranged in the wind blade 205, and the output end of the first piston 604 is connected to the input end of the second piston 607 through the fourth pipe 606, and a push plate 605 is fixedly arranged on one end extending from the input end of the first piston 604 to the inside of the groove body 602, and the bottom of the push plate 605 is pressed against the thermal bimetallic strip 603. When in use, heat is generated during the friction process between the first grinding block 6 and the second grinding block 601, and then the middle position of the thermal bimetallic strip 603 is deformed, which can push the push plate 605 to move into the first piston 604, and then the gas or liquid in the first piston 604 enters the second piston 607 through the fourth pipe 606, and then the second piston 607 can lift the slider 503, so that the angle of the sleeve 4 can be flexibly adjusted as the temperature rises, thereby improving the separation effect.

[0030] A sampling method for a blood testing sampling device further comprises the following steps: Step 1: First, you need to collect a whole blood sample and use the corresponding blood collection tube according to different test items; According to the test items, choose the appropriate blood collection tube, such as adding anticoagulants (such as EDTA, sodium citrate, etc.) or no anticoagulants (for serum separation) to the blood collection tube, and then collect blood samples from the patient's arm or finger aseptically. After the collection is completed, for samples that require anticoagulation, gently invert the blood collection tube to ensure that the blood and anticoagulant are fully mixed. For samples that require serum, leave it for a period of time (usually 15-30 minutes) to allow the blood to coagulate naturally.

[0031] Step 2: Place the blood collection tube in the sleeve 4, and set the centrifugal temperature and centrifugal angle as well as the speed and rotation time of the turntable 2; After the blood collection tube is weighed or placed directly in the sleeve 4, it is weighed by the pressure sensor 10. The quantitative pump 302 can quantitatively transport liquid to the corresponding liquid storage chamber 403 according to the weight of the blood collection tube in the sleeve 4 on the opposite side of the turntable 2, so that the weight on the opposite side is kept consistent as much as possible. Then the rotation speed and rotation time of the turntable 2 are set to perform separation.

[0032] Step 3: After centrifugation, use a pipette or sterile syringe to carefully transfer the upper layer of plasma or serum to a clean test tube.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A blood testing sampling device, comprising a housing (1), characterized in that: Also includes: A rotating disk (2) is rotatably arranged in the housing (1), a plurality of groups of rotating grooves (203) are evenly arranged on the rotating disk (2), sleeves (4) are rotatably arranged in the plurality of groups of rotating grooves (203), a liquid storage cavity (403) is arranged in the sleeves (4), and a liquid supply portion for supplying liquid to the liquid storage cavity (403) is arranged in the housing (1); A heating component is arranged in the box (1), and a heating tube (404) with a spiral structure is provided in the sleeve (4), one end of the heating tube (404) is connected to the output end of the heating component, and the other end of the heating tube (404) is connected to the inside of the box (1).

2. A blood testing sampling device according to claim 1, characterized in that: A separation chamber (101) is provided in the housing (1), the rotating disc (2) is rotatably arranged in the separation chamber (101), a driving chamber (102) is provided at the bottom of the housing (1), a rotating shaft (201) is fixedly arranged at the bottom of the rotating disc (2), a first gear (202) is fixedly arranged on one end of the rotating shaft (201) extending into the driving chamber (102), a motor is fixedly arranged in the driving chamber (102), and a second gear meshing with the first gear (202) is fixedly arranged at the output end of the motor.

3. A blood testing sampling device according to claim 2, characterized in that: The liquid supply unit comprises a water tank (301) fixedly arranged in the driving chamber (102), a metering pump (302) fixedly arranged in the driving chamber (102), one end of the metering pump (302) being connected to the water tank (301), and a liquid inlet pipe (405) being provided in the sleeve (4), one end of the liquid inlet pipe (405) being connected to the bottom of the liquid storage chamber (403), and the other end of the metering pump (302) being connected to the other end of the liquid inlet pipe (405) via a distributor.

4. A blood testing sampling device according to claim 3, characterized in that: The distributor comprises an oil distribution shaft (3) fixedly arranged in the driving chamber (102), wherein the oil distribution shaft (3) is provided with a plurality of second pipes (304), wherein the other end of the metering pump (302) is fixedly provided with a plurality of branch pipes (303) with valves, wherein the branch pipes (303) are respectively connected to the corresponding second pipes (304), wherein the rotating shaft (201) is provided with an oil distribution hole, wherein one end of the oil distribution shaft (3) is rotatably arranged in the oil distribution hole, wherein the inner wall of the oil distribution hole is provided with a plurality of first annular grooves (207), wherein the top and bottom of the plurality of first annular grooves (207) are fixedly provided with first sealing rings, wherein the plurality of second pipes (304) are respectively connected to the corresponding first annular grooves (207), wherein the rotating shaft (201) is provided with a plurality of first pipes (206), wherein one end of the first pipes (206) is connected to the first annular groove (207), and the other end of the first pipes (206) is connected to the liquid inlet pipe (405).

5. A blood testing sampling device according to claim 4, characterized in that: A negative pressure groove (103) is provided in the box body (1), an annular seat (204) is rotatably arranged in the negative pressure groove (103), an inner wall of the annular seat (204) is fixedly connected to the rotating shaft (201), and a plurality of groups of wind blades (205) are fixedly arranged on the outer wall of the annular seat (204), an air inlet groove (106) is provided on the inner wall of the separation chamber (101), and one end of the negative pressure groove (103) is connected to the air inlet groove (106) via an air inlet pipe (104).

6. A blood testing sampling device according to claim 5, characterized in that: The heating assembly comprises a first grinding block (6) with an annular structure, which is fixedly arranged at the bottom of the negative pressure groove (103); a second grinding block (601) is fixedly arranged at the bottom of the wind blade (205); the first grinding block (6) and the second grinding block (601) are abutted against each other; an exhaust hood (105) connected to the other end of the negative pressure groove (103) is provided in the box body (1); a second annular groove (802) is provided in the rotating shaft (201); the exhaust hood (105) is connected to the second annular groove (802); a second sealing ring is fixedly arranged at the bottom and top of the second annular groove (802); an exhaust pipe (801) is provided in the rotating shaft (201); the exhaust pipe (801) is connected to one end of the heating pipe (404).

7. A blood testing sampling device according to claim 6, characterized in that: A flow diversion chamber (8) is provided in the rotating disk (2); one end of the exhaust pipe (801) away from the second annular groove (802) is connected to the flow diversion chamber (8); a rotating shaft (401) is fixedly provided on the sleeve (4); the rotating shaft (401) is rotatably provided in the rotating groove (203); a third pipe (407) is provided in the rotating shaft (401); one end of the third pipe (407) is connected to one end of the heating pipe (404); a plurality of groups of flow diversion pipes are fixedly provided in the flow diversion chamber (8); the plurality of groups of flow diversion pipes are respectively connected to the other end of the third pipe (407).

8. A blood testing sampling device according to claim 7, characterized in that: An adjusting column (5) is fixedly arranged on the top of the turntable (2), a receiving groove (501) is provided in the adjusting column (5), a sliding block (503) is lifted and lowered in the receiving groove (501), a plurality of groups of rotating seats (504) are fixedly arranged on the outer wall of the sliding block (503), and a plurality of groups of sliding grooves (502) connected to the receiving groove (501) are provided on the adjusting column (5), and the plurality of groups of rotating seats (504) are respectively slidably arranged in the sliding grooves (502), a rotating plate (406) is fixedly arranged on the outer wall of the sleeve (4), and the rotating plate (406) is rotatably connected to the rotating seat (504) via a connecting rod (505), and a lifting part for driving the sliding block (503) to rise and fall is provided in the turntable (2).

9. A blood testing sampling device according to claim 8, characterized in that: The lifting part comprises a second piston (607) fixedly arranged in the rotating disk (2), the output end of the second piston (607) being fixedly connected to the bottom of the slider (503), a slot body (602) being provided in the wind blade (205), a thermal bimetallic strip (603) having an arc-shaped structure being fixedly arranged in the slot body (602), both ends of the thermal bimetallic strip (603) being fixedly connected to the second grinding block (601), a first piston (604) being fixedly arranged in the wind blade (205), the output end of the first piston (604) being connected to the input end of the second piston (607) via a fourth pipe (606), a push plate (605) being fixedly arranged on one end of the input end of the first piston (604) extending into the slot body (602), the bottom of the push plate (605) being against the thermal bimetallic strip (603).

10. A sampling method comprising the blood testing sampling device according to any one of claims 1 to 9, characterized in that: The following steps are also included: Step 1: First, you need to collect a whole blood sample and use the corresponding blood collection tube according to different test items; Step 2: placing the blood collection tube in the casing (4), and setting the centrifugal temperature and centrifugal angle; Step 3: After centrifugation, use a pipette or sterile syringe to carefully transfer the upper layer of plasma or serum to a clean test tube.

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