Blood centrifugal rotating device capable of adjusting balance force symmetry

Abstract

According to the blood centrifugal rotating device capable of achieving balance force symmetry adjustment, the swing angle synchronizer is arranged between the outer sides of the adjacent supporting frames, the swing angle synchronizer connects the ends of the two rotating transverse rods on the outer sides of the supporting frames, and therefore the swing angles of the adjacent containers can be synchronized through the swing angle synchronizer after the adjacent containers rotate along with the rotating body; through the multiple swing angle synchronizers, the swing angles of all the containers are the same after the containers rotate along with the rotating body, the containers are located on the same conical surface during rotation, centrifugal force generated by different containers is transmitted and balanced mutually after being connected through the swing angle synchronizers, and therefore the influence of unbalanced centrifugal force loading to the rotating shaft during rotation can be reduced; the rotating shaft is protected to a certain degree, the service life of the centrifugal machine is prolonged, and the safety of the centrifugal operation process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of blood testing, and in particular to a blood centrifugal rotating device with balanced force symmetry adjustment, which is used for stratified separation after blood sampling. Background Art

[0002] Blood centrifugation is a technique commonly used in medical testing to separate different components of blood. This technique is based on the difference in density of the various components in the blood, and separates them through centrifugal force.

[0003] The basic steps of blood centrifugation are: 1. Collect a blood sample and place it in a centrifuge tube containing an anticoagulant. 2. Place the centrifuge tube in the centrifuge and set the appropriate centrifugation speed and time. 3. After centrifugation, the blood will separate into layers, usually plasma or serum on the top, white blood cells in the middle, and red blood cells at the bottom.

[0004] The blood centrifuge generates centrifugal force through the rotation of the internal rotor to stratify the collected blood samples. When placing sampling tubes or centrifuge tubes on the rotor, they are placed as evenly as possible on the rotor, so that the overall center of gravity of the rotor is as close to or as close to the shaft as possible after placement, so as to reduce the damage to the shaft and vibration noise caused by the asymmetric centrifugal force during high-speed rotation. Therefore, the containers for placing sampling tubes or centrifuge tubes on the centrifuge are symmetrical in even numbers to meet the requirement of uniform distribution when placed. When centrifuging an odd number of sampling tubes or centrifuge tubes, the inspector will add a counterweight tube in the symmetrical vacant position to adjust the balance. Water is basically added to the counterweight tube. The amount of water added is based on the amount of blood contained in the sampling tubes or centrifuge tubes in the symmetrical position, and is based on the subjective judgment of the experimenter. It can achieve rough balance, but there is no weighing confirmation for the consistency of the weights of the sampling tubes or centrifuge tubes and blood samples that are centrifuged at the same time. During the rotation process, on the one hand, the centrifugal force is unbalanced due to the inconsistent weight of the sampling tubes or centrifuge tubes themselves, which causes certain damage to the rotating shaft; on the other hand, due to the different weights of the materials in each sampling tube or centrifuge tube, the center of gravity is different. After the containers for placing the sampling tubes or centrifuge tubes rotate with the turntable, the center of gravity of the blood sampling tubes or centrifuge tubes for blood stratification will further change as the rotation occurs. If the counterweight tube is filled with water, its center of gravity will not change, which further causes different heights of the center of gravity in different blood sampling tubes or centrifuge tubes. When rotating, the angles between the center lines of each blood sampling tube or centrifuge tube and the axis of the rotating shaft are different, which further aggravates the problem of imbalance during rotation.

[0005] The inventor believes that it is necessary to analyze and study this problem, reduce the factors causing imbalance as much as possible, improve the balance and symmetry of the centrifuge during rotation, thereby reducing the damage of centrifugal force to the shaft, extending the service life of the centrifuge, and ensuring the stability and safety of each centrifugation process. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems and to provide a blood centrifugal rotating device with symmetrical adjustment of the balance force.

[0007] The technical scheme of the present invention is: a blood centrifugal rotating device with symmetrical adjustment of balance force, comprising a rotating shaft, a rotating body mounted on the rotating shaft, 2N groups of support frames are evenly distributed on the rotating body, N≥2, and a tube container is mounted on each support frame, and the characteristic is: the support frame comprises two side vertical plates fixedly mounted on the rotating body, and a rotating mounting hole is arranged at the upper end of the side vertical plates, and the tube container is located in the middle of the two side vertical plates, and rotating cross bars are coaxially extended laterally on both sides of the upper part of the tube container, and the two rotating cross bars respectively pass through the rotating mounting holes to the outside of the supporting frame, and the rotating cross bars and the rotating mounting holes form a rotating pair; when the rotating body rotates, the tube container loaded with the blood sample will produce a deflection relative to the axis of the rotating shaft due to the action of centrifugal force, and the rotating cross bar will produce a certain angle of rotation in the rotating mounting hole, A swing angle synchronizer is arranged between the outer sides of adjacent support frames, and the swing angle synchronizer connects the ends of two rotating cross bars on the outer sides of the support frames, so that the outer swing angles of adjacent tube containers are consistent during rotation.

[0008] Preferably, the swing angle synchronizer is a coupling.

[0009] Preferably, the coupling is a universal joint. Any coupling that can achieve torque transmission on different axes can also be used.

[0010] Preferably, the swing angle synchronizer is a bendable flexible component. Plastic or rubber hose is used as the swing angle synchronizer for connection, which has a simple structure, is easy to install, and has a lower cost than a universal joint, thereby reducing the cost.

[0011] Preferably, the rotating body is a disc, the lower end of the side plate of the support frame is fixedly connected to the upper surface of the disc, and the shaft is fixedly connected to the middle of the disc. The moving shaft is connected to a driving unit, such as a motor, to rotate the shaft and the rotating body.

[0012] Preferably, the tube container comprises an outer sleeve and an inner sleeve, the outer circumferential surface of the inner sleeve and the inner circumferential surface of the outer sleeve form an axial sliding pair, an elastic component is provided between the inner sleeve and the outer sleeve, a transparent observation window is provided on the side of the outer sleeve, and a marking ring is provided on the outer circumferential surface of the inner sleeve.

[0013] Preferably, the upper end of the inner sleeve is provided with an annular step body protruding outward, and the outer circumferential surface of the annular step body and the inner circumferential surface of the outer sleeve form the sliding pair; the elastic component is provided on the lower surface of the annular step body and the bottom surface of the outer sleeve, and the elastic component is a coil spring, and the upper half of the coil spring is sleeved on the outside of the inner sleeve. In this way, the length of the spring is as long as possible, which is equivalent to the internal length of the outer sleeve. At the same time, the spring is sleeved on the outside of the inner sleeve, so that the diameter of the spring is as large as possible, which is conducive to the production of the spring and also conducive to reducing the elastic coefficient of the spring, so as to achieve the sensitivity of the test tube weight detection.

[0014] Preferably, the outer end surface of the lower end of the inner sleeve is a spherical surface, and the inner surface of the observation window and the inner surface of the outer sleeve are located on the same cylindrical surface.

[0015] Preferably, the observation window is provided with a scale, which is combined with a marking ring to facilitate quantification and accurate weight judgment.

[0016] Preferably, the observation window is located between the two side plates on the side of the inner sleeve facing the outer circle or the center of the disk. The side plates of the support frame are triangular, and a recessed area is provided on one side of the outer side. The side plates are in the shape of a right triangle, and the hypotenuse is used to support the inclined load generated by the tube container during rotation. The recessed area on the hypotenuse can not only meet the supporting strength of the side plates, but also reduce the space occupied by the side plates, making it easier to observe the scale changes of the internal marking ring.

[0017] The blood centrifuge rotating device with symmetrical adjustment of the balance force of the present invention is provided with a swing angle synchronizer between the outer sides of adjacent support frames, and the swing angle synchronizer connects the ends of two rotating cross bars on the outer sides of the support frames, so that the swing angles of adjacent containers after rotating with the rotating body can be synchronized by the swing angle synchronizer. Through multiple swing angle synchronizers, the swing angles of all containers after rotating with the rotating body are the same, and they are on the same conical surface during rotation. The centrifugal forces generated by different containers are connected through the angle synchronizer for mutual transmission and balance, so that the influence of the unbalanced loading of the centrifugal force on the rotating shaft during rotation can be reduced, a certain protection effect is formed on the rotating shaft, the service life of the centrifuge is extended, and the process safety of the centrifugal operation is guaranteed.

[0018] The swing angle synchronizer can be connected by a coupling or a bendable flexible connector to achieve the connection of the ends of the swing cross bars of different axes to transmit torque and balance different centrifugal forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A top view of the blood centrifugal rotating device with symmetry adjustment of the balance force in the first embodiment; Figure 2 for Figure 1AA cross-sectional structural diagram; Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure; Figure 4 for Figure 3 Schematic diagram of loading into sampling tube or centrifuge tube; Figure 5 It is a schematic diagram of the three-dimensional structure of the blood centrifugal rotating device with symmetry adjustment of the balance force in the second embodiment; Figure 6 for Figure 5 Schematic diagram of loading into sampling tube or centrifuge tube; Figure 7 This is a schematic diagram of the main structure of the tube container in Example 4; Figure 8 for Figure 7 AA cross-sectional structural diagram; Fig. 9 for Figure 7 Schematic diagram of the three-dimensional structure; Fig.10 It is a schematic diagram of the three-dimensional structure of the blood centrifugal rotating device with symmetry adjustment of the balance force in the fourth embodiment; Fig.11 It is a schematic diagram of the three-dimensional structure of the blood centrifugal rotating device with symmetry adjustment of the balance force in the fifth embodiment; In the figure, 1. rotating body, 2. side plate, 3. tube container, 4. universal joint, 5. rotating shaft, 6. plastic or rubber hose, 7. sampling tube or centrifuge tube, 21. rotating mounting hole, 31. rotating cross bar, 32. observation window, 33. outer sleeve, 34. bottom mounting cap, 35. spring, 36. inner sleeve, 361. step, 362. marking ring. DETAILED DESCRIPTION

[0020] Example 1: See Figure 1-Figure 3 A blood centrifugal rotating device with symmetrical adjustment of balance force comprises a rotating shaft 5 and a rotating body 1 mounted on the rotating shaft 5. 2N groups of support frames are evenly distributed on the rotating body 1, N≥2, and in this embodiment, N=3, with a total of six groups of support frames, each of which is equipped with a tube container 3. The support frame comprises two side plates 2 fixedly mounted on the rotating body 1, and a rotating mounting hole 21 is provided at the upper end of the side plates 2. The tube container 3 is located in the middle of the two side plates 2, and rotating cross bars 31 coaxially extend laterally from both sides of the upper part of the tube container 3. The two rotating cross bars 31 respectively pass through the rotating mounting holes 21 to the outside of the supporting frame, and the rotating cross bars 31 and the rotating mounting holes 21 form a rotating pair; when the rotating body 1 rotates, the tube container 3 loaded with the blood sample will produce a deflection relative to the axis of the rotating shaft 5 due to the action of centrifugal force, and the rotating cross bar 31 will produce a certain angle of rotation in the rotating mounting hole 21. A swing angle synchronizer is provided between the outer sides of adjacent support frames, and the swing angle synchronizer connects the ends of two rotating cross bars 31 on the outer sides of the support frames. The swing angle synchronizer connects the rotating cross bars of multiple tube containers 3 in sequence, and finally connects them into a circle, so that the deflection angles of different tube containers 3 can be synchronized. At the same time, the swing angle synchronizer is used to achieve the balance and transmission of different centrifugal forces of different tube containers 3, so as to reduce the influence caused by the different weights of the materials of each tube container 3 and the different heights of the center of gravity mentioned in the background technology, and minimize the damage of the unbalanced centrifugal force to the rotating shaft 5.

[0021] The swing angle synchronizer is a coupling. The coupling is a universal joint 4. The universal joint 4 is the preferred technical means of this embodiment, and other couplings can also be used as long as they can achieve torque transmission of different axes.

[0022] The rotating body 1 is a disc, the lower end of the side plate 2 of the support frame is fixedly connected to the upper surface of the disc, and the shaft 5 is fixedly connected to the middle of the disc. The shaft is connected to a driving unit, such as a motor, to rotate the shaft 5 and the rotating body 1.

[0023] The centrifugal rotation process of the device is as follows: the motor drives the rotating body 1, that is, the disc, to rotate, and the disc drives the tube container 3 to rotate around the rotating shaft 5 through the side stand 2 fixed on it. Figure 4 As shown, Figure 4 for Figure 3 Schematic diagram of the tube container 3 being loaded with a sampling tube or a centrifuge tube; due to the presence of the coupling, the swing angles of all the tube containers 3 relative to the center line of the rotating shaft 5 during centrifugation are the same. The coupling balances the centrifugal forces generated on different tube containers 3 by rotating the horizontal bar, thereby achieving overall structural symmetry of all the tube containers 3 and minimizing the inconsistency of the swing angles caused by different center of gravity heights, which further exacerbates the problem of imbalance.

[0024] Example 2: See Figure 5-6 , Embodiment 2 is basically the same as Embodiment 1, and the similarities are not repeated. The difference is that the swing angle synchronizer in Embodiment 2 is a bendable flexible component, which is a plastic or rubber hose 6 in this embodiment. Through the connection of the plastic or rubber hose 6, the structure is relatively simple, it is easy to install, and the cost is lower than that of the universal joint, which can reduce the cost.

[0025] Embodiment 3: Although not shown in the accompanying drawings, Embodiment 3 is basically the same as Embodiment 2, and the similarities are not repeated. The difference is that a coil spring 35 is used in Embodiment 3 to replace the plastic or rubber hose 6 in Embodiment 2, and angular transmission of different axes can also be achieved.

[0026] The rotation process of the second and third embodiments is basically the same as that of the first embodiment, and will not be described in detail.

[0027] Example 4: See Figure 7-10 Embodiment 4 is an improvement and optimization on Embodiment 1. In the prior art centrifugal device, the weight of water added is determined based on the experience of the inspector, and whether it can be consistent with the weight of the sampling tubes in symmetrical positions is also inaccurate.

[0028] The fourth embodiment is basically the same as the first embodiment, and the similarities are not repeated. The difference is that the tube container 3 described in the fourth embodiment includes an outer sleeve and an inner sleeve, the outer circumferential surface of the inner sleeve and the inner circumferential surface of the outer sleeve form a sliding pair along the axial direction, an elastic component is provided between the inner sleeve and the outer sleeve, a transparent observation window 32 is provided on the side of the outer sleeve, and a marking ring 362 is provided on the outer circumferential surface of the inner sleeve. After a certain weight of blood sample is loaded into the inner sleeve, due to the increase in weight, the compression spring 35 is deformed, and the inner sleeve moves downward relative to the outer sleeve. The weight of the internal blood sample can be judged by observing the moving distance of the marking ring 362 through the observation window 32. At the same time, the same weight of water (when the number of sampling tubes to be centrifuged is an odd number) or blood sample (when the number of sampling tubes to be centrifuged is an even number) can be balanced at a symmetrical position. With the measurement of weight, a quantitative basis is achieved, and the accuracy of balancing can be greatly improved.

[0029] The upper end of the inner sleeve is provided with an annular step 361 body protruding outward, and the outer circumferential surface of the annular step 361 body and the inner circumferential surface of the outer sleeve form the sliding pair; the elastic component is provided on the lower surface of the annular step 361 body and the bottom surface of the outer sleeve, and the elastic component is a coil spring 35, and the upper half of the coil spring 35 is sleeved on the outside of the inner sleeve; in this way, the length of the spring 35 is as long as possible, which is equivalent to the internal length of the outer sleeve. At the same time, the spring 35 is sleeved on the outside of the inner sleeve, so that the diameter of the spring 35 is as large as possible, which is conducive to the production of the spring 35, and it reacts sensitively to small weight changes, which is conducive to compression deformation and weight observation.

[0030] The outer end surface of the lower end of the inner sleeve is a spherical surface, and the inner surface of the observation window 32 and the inner surface of the outer sleeve 33 are located on the same cylindrical surface. The spherical surface will not get stuck with the gap of the spring 35, which is conducive to the flexible downward movement of the inner sleeve. The inner surface of the observation window 32 is flush with the inner surface of the outer sleeve 33, and will not hinder the expansion and contraction of the spring 35.

[0031] The observation window 32 is provided with a scale, which is combined with a marking ring 362 to facilitate quantification and accurate weight judgment.

[0032] The balancing process of the fourth embodiment during use is as follows: first, a sampling tube or a centrifuge tube 7 is loaded into the tube container 3. By observing the change in the scale of the marking ring 362 in the tube container 3, the weight of the sampling tube or the centrifuge tube 7 can be known. A counterweight tube is loaded at a symmetrical position, and the weight of the counterweight tube is observed. By adjusting the amount of water in the counterweight tube, the same weight can be achieved on both sides, thereby reducing the influence of the centrifugal force on the rotating shaft 5.

[0033] Example 5: See Fig.11 , Embodiment 5 is basically the same as Embodiment 4, and the similarities are not repeated. The difference is that the swing angle synchronizer in Embodiment 5 is a bendable flexible component, which is a plastic or rubber hose 6 in this embodiment.

[0034] The balancing process of the fifth embodiment when in use is the same as that of the fourth embodiment, and will not be described in detail.

[0035] For the fourth and fifth embodiments, further adding additional technical means can form more embodiments.

[0036] For example, the observation window 32 is located between the two side vertical plates 2, facing the side of the inner sleeve of the outer circle or the center of the disk. This can avoid the vertical plates 2 on both sides from blocking, making it convenient for the operator to observe the scale changes of the marking ring 362.

[0037] For another example, the side plate 2 of the support frame is set to be a triangle, and a recessed area is provided on one side of the outer side. The side plate 2 is in the shape of a right triangle, and the hypotenuse is used to support the inclined load generated by the tube container 3 during rotation. The recessed area on the hypotenuse can meet the support strength of the side plate 2 while reducing the space occupied by the side plate 2, making it easier to observe the scale changes of the internal marking ring 362.

[0038] The invention provides a technical solution for the rotating part of a blood centrifuge consisting of a rotor 1 and a tube container 3 installed thereon, which can be combined with various driving parts, casings and upper covers of related blood centrifuges in the prior art to form a centrifuge. The process of combining to form a centrifuge will not be repeated.

Claims

1. A blood centrifugal rotating device with symmetrically adjusted balance force, comprising a rotating shaft and a rotating body mounted on the rotating shaft, wherein 2N groups of supporting frames are evenly distributed on the rotating body, N≥2, and each supporting frame is mounted with a tube container, wherein: The support frame includes two side vertical plates fixedly mounted on the rotating body, and a rotating mounting hole is provided at the upper end of the side vertical plates. The tube container is located in the middle of the two side vertical plates, and rotating cross bars extend laterally from both sides of the upper part of the tube container. The two rotating cross bars respectively pass through the rotating mounting holes to the outside of the support frame, and the rotating cross bars and the rotating mounting holes form a rotating pair; A swing angle synchronizer is arranged between the outer sides of adjacent support frames, and the swing angle synchronizer connects the ends of two rotating cross bars on the outer sides of the support frames.

2. The blood centrifugal rotating device with symmetrical adjustment of balance force according to claim 1, characterized in that: The swing angle synchronizer is a coupling.

3. The blood centrifugal rotating device with symmetrical adjustment of balance force according to claim 2, characterized in that: The coupling is a universal joint.

4. The blood centrifugal rotating device with symmetrical adjustment of balance force according to claim 1, characterized in that: The swing angle synchronizer is a bendable flexible component.

5. The blood centrifugal rotating device with balanced force symmetry adjustment according to claim 1, characterized in that: The rotating body is a disc body, the lower end of the side plate of the supporting frame is fixedly connected to the upper surface of the disc, and the rotating shaft is fixedly connected to the middle part of the disc body.

6. The blood centrifugal rotating device with balanced force symmetry adjustment according to claim 1, characterized in that: The tube container comprises an outer sleeve and an inner sleeve, the outer circumference of the inner sleeve and the inner circumference of the outer sleeve form an axial sliding pair, an elastic component is provided between the inner sleeve and the outer sleeve, a transparent observation window is provided on the side of the outer sleeve, and a marking ring is provided on the outer circumference of the inner sleeve.

7. The blood centrifugal rotating device with symmetrical adjustment of balance force according to claim 6, characterized in that: The upper end of the inner sleeve is provided with an annular step body protruding outward, and the outer circumferential surface of the annular step body and the inner circumferential surface of the outer sleeve form the sliding pair; the elastic component is provided on the lower surface of the annular step body and the bottom surface of the outer sleeve, and the elastic component is a coil spring, and the upper half of the coil spring is sleeved on the outside of the inner sleeve.

8. The blood centrifugal rotating device with symmetrical adjustment of balance force according to claim 7, characterized in that: The outer end surface of the lower end of the inner sleeve is a spherical surface, and the inner surface of the observation window and the inner surface of the outer sleeve are located on the same cylindrical surface.

9. The blood centrifugal rotating device with balanced force symmetry adjustment according to claim 6, characterized in that: The observation window is provided with scales.

10. The blood centrifugal rotating device with balanced force symmetry adjustment according to claim 9, characterized in that: The observation window is located between two side plates on the side of the inner sleeve facing the outer circle or the center of the disk. The side plates of the support frame are triangular in shape and have a recessed area on one side of the outer side.

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