Serum separation device

Abstract

The utility model discloses a serum separating device, which belongs to the field of separating devices and comprises a shell with an opening at the upper end, a separating cylinder is coaxially arranged in the shell and comprises an upper disc and a lower disc, the upper disc and the lower disc are connected through a threaded rod which is arranged in the lower disc in a sliding manner along the vertical direction, and the top end of the threaded rod and the lower end face of the lower disc are coaxially arranged. A locking mechanism is arranged on the threaded rod and used for driving the threaded rod to move up and down in the lower disc and achieving locking of the threaded rod relative to any position of the lower disc. Through the arrangement of the upper disc and the lower disc, the distance between the upper disc and the lower disc can be adjusted, and adaptive rotation is generated through the upper fixing device and the lower fixing device which are respectively arranged in the through holes of the upper disc and the lower disc, so that the inclination of the test tubes which are fixed in the upper fixing device and the lower fixing device and contain blood is changed; the purpose of the initial state of the test tube is achieved, and the blood separation effect is improved.

Description

Technical Field

[0001] The utility model relates to a separation device, in particular to a serum separation device. Background Art

[0002] The blood separator achieves the purpose of blood separation by gravity centrifugation. It generally includes a rotatable separation cylinder. The upper end surface of the separation cylinder is evenly provided with a number of holes along the circumferential direction. The tops of the holes are inclined toward the center of the separation cylinder. When in use, the test tube containing blood is inserted into the hole, and the separation cylinder is rotated to separate the blood. The upper part of the separated blood is translucent serum.

[0003] After searching, the patent number is CN218340043U, which provides a blood centrifugal separation device, including a centrifuge housing, a rotating shaft is arranged inside the centrifuge housing along its axis, a carrier plate is fixedly installed on the upper surface of the rotating shaft, the surface array of the carrier plate is provided with mounting holes, the bottom array of the carrier plate is provided with a rubber sleeve, the rubber sleeve is arranged at the bottom opening of the mounting hole, the inner diameter of the rubber sleeve gradually decreases from top to bottom, the top of the carrier plate is clamped with a cover plate, the center of the cover plate is provided with an avoidance hole adapted to the rotating shaft, and the bottom array of the cover plate is provided with a spacer ring. By inserting the blood collection tube into the inside of the mounting hole, the blood collection tube pushes the rubber sleeve outward, the blood collection tube is fixed by the elasticity of the rubber sleeve, and then the cover plate is inserted from the top of the rotating shaft, so that the blood collection tube is clamped between the cover plate and the support plate, so as to achieve a good effect of fixing the blood collection tube.

[0004] The insertion hole of the separation cylinder in the prior art is arranged to be tilted, and a test tube containing blood is inserted into the insertion hole and maintained in a tilted state. The separation cylinder rotates to separate the blood in the test tube. Since the inclination of the insertion hole is fixed, the inclination of the test tube is also fixed, and the inclination of the test tube in operation is also fixed. The inclination of the test tube cannot be adjusted according to the needs of blood separation, and the separation effect is poor. Utility Model Content

[0005] The utility model aims to provide a serum separation device, which can adjust the inclination of the test tube according to the length of the test tube to increase the effect of blood separation.

[0006] The utility model adopts the following technical scheme: a serum separation device comprises a shell with an upper end opening, a separation cylinder is coaxially arranged inside the shell, the separation cylinder comprises an upper plate and a lower plate, the upper plate and the lower plate are connected by a threaded rod slidably arranged in the lower plate along the up and down directions, the top end of the threaded rod is coaxially arranged with the lower end surface of the lower plate, a locking mechanism is arranged on the threaded rod, the locking mechanism is used to drive the threaded rod to move up and down in the lower plate, and realize the locking of the threaded rod relative to any position of the lower plate, a plurality of through holes are arranged in the circumferential direction inside the upper plate and the lower plate, an upper fixing device is hinged in the through hole of the upper plate, a lower fixing device is hinged in the through hole of the lower plate, and the upper fixing device and the lower fixing device are arranged correspondingly; the locking mechanism drives the upper plate to move up and down through the threaded rod, and changes the initial posture of the test tube containing blood under the cooperation of the upper fixing device and the lower fixing device.

[0007] Furthermore, a driving device is arranged at the bottom of the shell, and an output end of the driving device is arranged coaxially with the lower end surface of the lower plate.

[0008] Furthermore, the locking mechanism includes a sleeve rotatably connected to the upper end surface of the lower plate, an adjusting nut is fixedly provided on the upper end surface of the sleeve, the adjusting nut is threadedly connected to the threaded rod, and the sleeve and the threaded rod are sleeved.

[0009] Furthermore, the upper fixing device comprises an upper fixing ring hinged in the through hole of the upper plate.

[0010] Furthermore, the lower fixing device comprises a lower fixing ring hinged in the through hole of the lower plate, and a bottom plate is fixedly arranged below the lower fixing ring via a connecting column.

[0011] Furthermore, the lower fixing ring is hinged in the through hole of the lower plate by means of hinge shafts arranged on the front and rear sides, and an arc groove is opened on the inner wall of the through hole of the lower plate at a position corresponding to the hinge shaft, and the end of the hinge shaft away from the lower fixing ring is located in the arc groove and is slidably arranged, and the center of the arc groove is located on the rotation axis of the upper fixing ring hinged in the through hole corresponding to the upper plate, and a spring is arranged in the arc groove, the right end of the spring is connected to the inner side wall of the outer end of the arc groove, and the left end of the spring is fixed to the corresponding hinge shaft, and the spring drives the hinge shaft to always move toward the inner side wall of the inner end of the arc groove.

[0012] Furthermore, the driving device includes a motor arranged at the bottom of the shell, the output shaft of the motor is fixedly arranged with a vertical shaft arranged in the shell along the up-down direction, and the vertical shaft is coaxially fixedly arranged with the lower plate.

[0013] Furthermore, a circular hole is coaxially opened on the upper end surface of the vertical shaft along the up-down direction, and the threaded rod is sleeved with the vertical shaft through the circular hole.

[0014] Furthermore, a partition is coaxially fixedly arranged inside the shell, and the partition is rotatably connected to the vertical shaft.

[0015] Furthermore, a cover plate is provided at the upper end of the shell.

[0016] The utility model can adjust the distance between the upper plate and the lower plate by arranging the upper plate and the lower plate, and produce adaptive rotation by the upper fixing device and the lower fixing device respectively arranged in the through holes of the upper plate and the lower plate, so that the inclination of the test tube containing blood fixed in the upper fixing device and the lower fixing device is changed, thereby achieving the purpose of the initial state of the test tube and increasing the blood separation effect.

[0017] Furthermore, by providing an arc groove on the inner side wall of the through hole of the lower plate and the hinge axis of the lower fixing ring, and the center of the arc groove coincides with the rotation axis of the upper fixing ring in the through hole corresponding to the upper plate, the bottom end of the test tube fixed in the upper fixing ring and the corresponding lower fixing ring can swing upward, so that the hinge axis of the lower fixing ring slides upward in the arc groove, and the bottom end of the test tube swings upward under the action of centrifugation during separation, thereby further increasing the inclination of the test tube and improving the separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the shell in the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure inside the shell of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the housing in the utility model;

[0022] Figure 5 It is a schematic diagram of the internal three-dimensional structure of the upper plate and the lower plate of the utility model;

[0023] Figure 6 It is a schematic diagram of the internal structure of the upper plate and the lower plate in the utility model;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the lower fixing ring in the utility model;

[0025] Figure 8 It is a schematic diagram of the internal structure of the neutral shaft of the utility model.

[0026] In the figure, 1, shell; 2, upper plate; 3, lower plate; 4, threaded rod; 5, through hole; 6, sleeve; 7, adjusting nut; 8, locking nut; 9, upper fixing ring; 10, lower fixing ring; 11, connecting column; 12, bottom plate; 13, hinge shaft; 14, arc groove; 15, spring; 16, motor; 17, vertical shaft; 18, round hole; 19, partition; 20, cover plate. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0028] The serum separation device of the utility model comprises a shell 1 with an upper end opening, a separation cylinder is coaxially arranged inside the shell 1, and the separation cylinder comprises an upper plate 2 and a lower plate 3, the upper plate 2 and the lower plate 3 are connected by a threaded rod 4 slidably arranged in the lower plate 3 along the up-down direction, the top end of the threaded rod 4 is coaxially arranged with the lower end surface of the lower plate 3, and a locking mechanism is arranged on the threaded rod 4, the locking mechanism is used to drive the threaded rod 4 to move up and down in the lower plate 3, and realize the locking of the threaded rod 4 relative to any position of the lower plate 3, the inner part of the upper plate 2 and the lower plate 3 A plurality of through holes 5 are arranged along the circumferential direction of the shell 1, an upper fixing device is hinged in the through holes 5 of the upper plate 2, and a lower fixing device is hinged in the through holes 5 of the lower plate 3. The upper fixing device and the lower fixing device rotate in the same direction, and the upper fixing device and the lower fixing device are arranged correspondingly; the locking mechanism drives the upper plate 2 to move up and down through the threaded rod 4, and with the cooperation of the upper fixing device and the lower fixing device, the initial posture of the test tube containing blood is changed. A driving device is arranged at the bottom of the shell 1, and the output end of the driving device is coaxially arranged with the lower end face of the lower plate 3.

[0029] When in use, a test tube containing blood is inserted into the upper fixing device and the corresponding lower fixing device, and the driving device drives the lower plate 3 to rotate. The threaded rod 4 can only slide up and down relative to the lower plate 3 but cannot rotate. The lower plate 3 drives the upper plate 2 to rotate synchronously through the threaded rod 4. The synchronous rotation of the upper plate 2 and the lower plate 3 drives the upper fixing device and the lower fixing device to rotate, so that the test tube containing blood rotates. Under the high-speed rotation of the upper plate 2 and the lower plate 3, the blood in the test tube is separated, and the translucent or light red part on the upper part is the serum; when in use, the threaded rod 4 can be driven up and down by the locking mechanism, thereby driving the upper plate 2 to move up and down, changing the fixed posture of the test tube in the upper fixing device and the corresponding lower fixing device, and increasing the separation effect.

[0030] In this embodiment, the locking mechanism includes a sleeve 6 rotatably connected to the upper end surface of the lower plate 3, and an adjusting nut 7 is fixedly provided on the upper end surface of the sleeve 6. The adjusting nut 7 is threadedly connected to the threaded rod 4, and the sleeve 6 and the threaded rod 4 are sleeved; when it is necessary to adjust the relative position of the upper plate 2 with respect to the lower plate 3, the threaded rod 4 is driven to move up and down in the lower plate 3 by rotating the adjusting nut 7, and then the threaded rod 4 drives the upper plate 2 to move up and down. After the position of the upper plate 2 is adjusted, the adjusting nut 7 also locks the position of the upper plate 2 through the threaded rod 4.

[0031] During use, the adjusting nut 7 is prone to rotate, thereby changing the upper and lower positions of the upper plate 2. In order to solve this problem, in this embodiment, a locking nut 8 is threadedly connected to the threaded rod 4 located above the adjusting nut 7. When the position of the upper plate 2 is adjusted, the locking nut 8 is rotated to move the locking nut 8 downward and conflict with the adjusting nut 7 to prevent the adjusting nut 7 from rotating.

[0032] In this embodiment, the upper fixing device includes an upper fixing ring 9 hinged in the through hole 5 of the upper plate 2.

[0033] In this embodiment, the lower fixing device includes a lower fixing ring 10 hinged in the through hole 5 of the lower plate 3, and a bottom plate 12 is fixedly arranged below the lower fixing ring 10 through a connecting column 11, and the rotation directions of the lower plate 3 and the upper plate 2 are consistent; when in use, the test tube is passed through the upper fixing ring 9 and inserted into the corresponding lower fixing ring 10, so that the upper fixing ring 9 and the corresponding lower fixing ring 10 fix the test tube at the same time, and the bottom plate 12 prevents the test tube from continuing to move downward, and the driving device drives the lower plate 3 and the upper plate 2 to rotate synchronously to separate the blood in the test tube. If it is necessary to change the initial fixed posture of the test tube, it is achieved by adjusting the upper and lower positions of the upper plate 2 by rotating the adjusting nut 7. When the upper and lower positions of the upper plate 2 change, the upper fixing ring 9 and the lower fixing ring 10 cooperate to produce adaptive rotation, thereby changing the initial posture of the test tube, so that the initial posture of the test tube is inclined at a larger angle toward the center of the upper plate 2, thereby increasing the separation effect.

[0034] In order to further increase the blood separation effect, in this embodiment, the lower fixing ring 10 is hinged in the through hole 5 of the lower plate 3 by means of hinge shafts 13 arranged on the front and rear sides, and an arc groove 14 is provided on the inner side wall of the through hole 5 of the lower plate 3 at a position corresponding to the hinge shaft 13, and the center of the arc groove 14 is located on the rotation axis of the upper fixing ring 9 hinged in the through hole 5 corresponding to the upper plate 2, and a spring 15 is provided in the arc groove 14, and the right end of the spring 15 is connected to the inner side wall of the outer end of the arc groove 14, and the left end of the spring 15 is fixedly arranged with the corresponding hinge shaft 13. The spring 15 drives the hinge shaft 13 to always move toward the inner side wall of the inner end of the arc groove 14; when the upper plate 2 and the lower plate 3 stop rotating, the spring 15 pushes the hinge shaft 13 to be located at the inner end position of the arc groove 14; when the upper plate 2 and the lower plate 3 rotate, under the action of centrifugal force, the bottom end of the test tube located in the upper fixing ring 9 and the corresponding lower fixing ring 10 swings upward, driving the hinge shaft 13 of the lower fixing ring 10 to compress the spring 15 and slide outward in the arc groove 14, further changing the tilting posture of the test tube during blood separation and increasing the effect of blood separation.

[0035] In this embodiment, the driving device includes a motor 16 arranged at the bottom of the shell 1, the output shaft of the motor 16 is fixed to a vertical shaft 17 arranged in the shell 1 along the up and down direction, the vertical shaft 17 is coaxially fixed with the lower plate 3, and a circular hole 18 is coaxially opened on the upper end surface of the vertical shaft 17 along the up and down direction, and the threaded rod 4 is sleeved with the vertical shaft 17 through the circular hole 18; when in use, the motor 16 drives the lower plate 3 to rotate through the vertical shaft 17, and then drives the upper plate 2 to rotate synchronously.

[0036] In this embodiment, a partition plate 19 is coaxially fixedly disposed inside the housing 1 , and the partition plate 19 is rotatably connected to the vertical shaft 17 .

[0037] In this embodiment, a cover plate 20 is provided at the upper end of the shell 1; when in use, the cover plate 20 is buckled on the upper end of the shell 1, and then the upper plate 2 and the lower plate 3 are driven to rotate by the motor 16 to achieve separation of blood in the test tube.

[0038] The working principle of the utility model is as follows: a test tube containing blood is inserted into an upper fixing ring 9 and a corresponding lower fixing ring 10, and the bottom end of the test tube contacts the bottom plate 12 of the lower fixing ring 10. When separating blood, the number of test tubes needs to be an even number. If only the blood in one test tube needs to be separated, a liquid of the same mass as the blood can be contained in another test tube, and then the test tube containing the liquid and the test tube containing the blood are symmetrically fixed to keep the balance of the upper plate 2 and the lower plate 3; then the motor 16 is started, and the motor 16 drives the lower plate 3 to rotate through the vertical shaft 17, and the lower plate 3 drives the upper plate 2 to rotate through the threaded rod 4, so that the upper plate 2 and the lower plate 3 rotate synchronously to separate the blood in the test tube; when the initial posture of the test tube needs to be adjusted, the locking nut 8 is first loosened, and then the adjusting nut 7 is rotated to drive the screw The threaded rod 4 moves downward, and the bottom end of the threaded rod 4 moves downward in the circular hole 18 of the vertical shaft 17. The threaded rod 4 drives the upper plate 2 to move downward, and the position of the upper plate 2 is adjusted into place. The upper fixing ring 9 and the lower fixing ring 10 produce adaptive rotation, so that the initial posture of the test tube is tilted toward the center of the circle of the upper plate 2, and the locking nut 8 is rotated so that the locking nut 8 moves downward and conflicts with the adjusting nut 7 to prevent the adjusting nut 7 from rotating. Then the motor 16 drives the upper plate 2 and the lower plate 3 to rotate synchronously to separate the blood in the test tube. During separation, the bottom end of the test tube swings upward under the action of centrifugal force, driving the hinge shaft 13 to move outward in the arc groove 14 to compress the spring 15, so that the posture of the test tube during separation is further tilted toward the center of the circle of the upper plate 2, thereby increasing the blood separation effect.

Claims

1. A serum separation device, characterized in that: The invention comprises a shell (1) with an opening at the upper end, a separation cylinder being coaxially arranged inside the shell (1), the separation cylinder comprising an upper plate (2) and a lower plate (3), the upper plate (2) and the lower plate (3) being connected via a threaded rod (4) slidably arranged inside the lower plate (3) in an up-down direction, the top end of the threaded rod (4) being coaxially arranged with the lower end surface of the lower plate (3), the threaded rod (4) being provided with a locking mechanism, the locking mechanism being used to drive the threaded rod (4) to move up and down inside the lower plate (3) and to lock the position of the threaded rod (4) relative to the lower plate (3), the inner surfaces of the upper plate (2) and the lower plate (3) being locked. A plurality of through holes (5) are provided along the circumferential direction of the upper plate (2), an upper fixing device is hingedly connected in the through hole (5) of the upper plate (2), and a lower fixing device is hingedly connected in the through hole (5) of the lower plate (3), the upper fixing device and the lower fixing device have the same rotation direction, and the upper fixing device and the lower fixing device are arranged correspondingly; the locking mechanism drives the upper plate (2) to move up and down through the threaded rod (4), and the initial posture of the test tube containing blood is changed under the cooperation of the upper fixing device and the lower fixing device; a driving device is provided at the bottom of the housing (1), and the output end of the driving device is coaxially arranged with the lower end surface of the lower plate (3).

2. The serum separation device according to claim 1, characterized in that: The locking mechanism comprises a sleeve (6) rotatably connected to the upper end surface of the lower plate (3); an adjusting nut (7) is fixedly provided on the upper end surface of the sleeve (6); the adjusting nut (7) is threadedly connected to the threaded rod (4); and the sleeve (6) and the threaded rod (4) are sleeved.

3. The serum separation device according to claim 2, characterized in that: A locking nut (8) is threadedly connected to the threaded rod (4) located above the adjusting nut (7).

4. The serum separation device according to claim 2, characterized in that: The upper fixing device comprises an upper fixing ring (9) hinged in a through hole (5) of the upper plate (2).

5. The serum separation device according to claim 4, characterized in that: The lower fixing device comprises a lower fixing ring (10) hinged in a through hole (5) of the lower plate (3), and a bottom plate (12) is fixedly arranged below the lower fixing ring (10) via a connecting column (11).

6. The serum separation device according to claim 5, characterized in that: The lower fixing ring (10) is hinged in the through hole (5) of the lower plate (3) via hinge shafts (13) arranged at the front and rear sides. An arc groove (14) is provided on the inner wall of the through hole (5) of the lower plate (3) at a position corresponding to the hinge shaft (13). One end of the hinge shaft (13) away from the lower fixing ring (10) is located in the arc groove (14) and is slidably arranged. The center of the arc groove (14) is located on the rotation axis of the upper fixing ring (9) hinged in the through hole (5) corresponding to the upper plate (2). A spring (15) is arranged in the arc groove (14). The right end of the spring (15) is connected to the inner wall of the outer end of the arc groove (14). The left end of the spring (15) is fixedly arranged with the corresponding hinge shaft (13). The spring (15) drives the hinge shaft (13) to always move toward the inner wall of the inner end of the arc groove (14).

7. The serum separation device according to claim 1, characterized in that: The driving device comprises a motor (16) arranged at the bottom of the housing (1), the output shaft of the motor (16) being fixedly arranged on a vertical shaft (17) arranged in the housing (1) along the up-down direction, and the vertical shaft (17) being coaxially fixedly arranged on the lower plate (3).

8. The serum separation device according to claim 7, characterized in that: A circular hole (18) is coaxially provided on the upper end surface of the vertical shaft (17) along the up-down direction, and the threaded rod (4) is sleeved with the vertical shaft (17) through the circular hole (18).

9. The serum separation device according to claim 7, characterized in that: A partition plate (19) is coaxially fixedly arranged inside the shell (1), and the partition plate (19) is rotatably connected to the vertical shaft (17).

10. The serum separation device according to claim 1, characterized in that: A cover plate (20) is provided at the upper end of the shell (1).

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