Compact centrifuge rotating frame

Abstract

The utility model discloses a compact centrifuge rotating frame which comprises a support, a main shaft, a carrying frame, clamping rings and hanging baskets, the upper surfaces of the two clamping rings are provided with positioning protrusions which can be distinguished from each other, and the lower surfaces of backing rings of the two hanging baskets are correspondingly provided with corresponding positioning holes. By means of the design, it is ensured that the centrifugal tube can be correctly assembled in the specified clamping ring, mistaken placement of an operator is avoided, and therefore the operation accuracy is improved. According to the centrifugal machine, the structures of the clamping ring and the hanging basket are optimized to reduce the height, the compact design is beneficial to centrifugal operation in a limited space, the structure is simplified, and the size of the centrifugal machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of blood separation equipment, and particularly relates to a compact centrifuge rotating frame. Background Art

[0002] A PRP centrifuge is a device for preparing PRP from whole blood and belongs to a kind of medical device, which is widely used in the medical field. Its main structure is to set a rotating rotor frame in a relatively closed cavity. The rotor frame is evenly distributed with paired suspension devices in the circumferential direction for placing centrifuge tubes, and the centrifuge tubes and balancing tubes are respectively placed in the matching tubes of the suspension devices. At present, the centrifuge on the market has high requirements for personnel operation skills and does not realize the whole-process aseptic closed automation extraction. If one-stop closed aseptic automation extraction functions such as centrifugation, positioning, puncture, adjusting the liquid level height, controlling the extraction speed, and accurately extracting the amount are to be realized, it is necessary to design the suspension device separately to avoid misplacement by the operator; it is also necessary for the centrifuge tube to be automatically corrected to the specified position to avoid misoperation caused by the centrifuge tube staying in the wrong position.

[0003] The applicant's previously applied patent (application number 202320686979.7, application date March 31, 2023) discloses a centrifuge rotor frame structure, which has two groups of suspension devices composed of a first snap ring and a first matching tube, and a second snap ring and a second matching tube, and has an assembly structure that can be distinguished from each other, so that after the centrifuge tube is placed in the specified matching tube, it can be accurately assembled in the corresponding snap ring, thereby ensuring that the centrifuge tube can stay at the specified aspiration position after centrifugation, which is beneficial to realizing one-stop closed aseptic automation extraction functions such as centrifugation, positioning, puncture, adjusting the liquid level height, controlling the extraction speed, and accurately extracting the amount. In the above structure, an assembly structure is provided between the snap ring and the matching tube, and a special assembly structure is also required between the matching tube and the centrifuge tube. Therefore, the rotating frame structure is relatively bulky, which also results in a relatively large height of the centrifuge, bringing inconvenience to operation. Summary of the Utility Model

[0004] In order to simplify the structure of the centrifuge rotating frame and reduce the overall volume of the equipment, the utility model provides a compact centrifuge rotating frame.

[0005] The technical solution adopted by the present utility model is as follows: A compact centrifuge rotating rack, comprising: a bracket disposed inside the centrifuge; a main shaft rotatably mounted on the bracket; a motor for driving the main shaft to rotate; a carrier horizontally and symmetrically mounted at the upper end of the main shaft; two snap rings respectively hinged at both ends of the carrier and rotatable along an axis perpendicular to the center line of the carrier; two hanging baskets, including a tube body and a retaining ring on the outer peripheral wall of the tube body, the upper end of the tube body being open and the lower end being provided with an adjustment hole, the tube body being inserted into the snap ring, and the snap ring being supported below the retaining ring; positioning protrusions that can be distinguished from each other are provided on the upper surfaces of the two snap rings, and positioning holes that can be distinguished from each other are correspondingly provided on the lower surfaces of the two retaining rings.

[0006] Preferably, the upper surfaces of the two snap rings are provided with positioning protrusions having different numbers, and the lower surfaces of the two retaining rings are provided with positioning holes corresponding to the numbers.

[0007] Preferably, the upper surfaces of the two snap rings are provided with positioning protrusions having different diameters, and the lower surfaces of the two retaining rings are provided with positioning holes corresponding to the diameters.

[0008] Preferably, X-shaped cantilevers are respectively formed at both ends of the carrier, hooks are formed at the outer ends of the cantilevers, and the two snap rings are assembled in the hooks.

[0009] Preferably, the hook is equipped with a cover plate having an X-shaped structure consistent with the shape of the cantilever, and a closed hole for preventing the snap ring from coming out is formed after the cover plate and the cantilever are assembled.

[0010] Preferably, the snap ring includes a ring body and suspension shafts on both sides, and the suspension shafts are installed in the hooks.

[0011] Preferably, after the suspension shafts are installed in the hooks, the axis height of the suspension shafts remains within the height range of the cantilever.

[0012] Preferably, the aperture of the adjustment hole is smaller than the outer diameter of the centrifuge tube consumable.

[0013] Preferably, a plurality of observation holes are formed in the circumferential wall of the tube body.

[0014] Preferably, a stop bar consistent with the direction of the carrier is fixed on the main shaft, and the end of the stop bar is used to abut against the lower end of the hanging basket.

[0015] The utility model has the following beneficial effects: The upper surfaces of the two snap rings of the utility model are provided with distinguishable positioning protrusions, and the lower surfaces of the retaining rings of the two hanging baskets are correspondingly provided with corresponding positioning holes. This design ensures that the centrifuge tube consumables can be correctly assembled in the designated snap rings, avoiding misplacement by operators, thereby improving the operation accuracy; The structures of the snap rings and the hanging baskets are optimized to reduce the height. This compact design helps to realize centrifugation operations in a limited space, simplifies the structure, and reduces the volume of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of the carrier in an embodiment of the utility model.

[0018] Figure 3 It is an assembly schematic diagram of the snap ring and the hanging basket in an embodiment of the utility model.

[0019] Figure 4 It is a state schematic diagram of the hanging basket during centrifugation work in an embodiment of the utility model.

[0020] Figure 5 It is a cross-sectional schematic diagram of the centrifuge tube consumables in an embodiment of the utility model.

[0021] Bracket 1; Main shaft 2; Motor 3; Carrier 4, cantilever 401, hook 402, cover plate 403; Snap ring 5, positioning protrusion 501, ring body 502, suspension shaft 503; Hanging basket 6, tube body 601, retaining ring 602, adjustment hole 603, positioning hole 604, observation hole 605; Stop bar 7; Centrifuge tube consumable 8, outer shell 801, central tube 802, adjustment piston 803. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the present utility model in conjunction with the embodiments and the drawings.

[0023] In the embodiment, as Figures 1 to 4As shown in the figure, it is a compact centrifuge rotating frame, including: a bracket 1, arranged inside the centrifuge; a main shaft 2, rotatably installed on the bracket 1; a motor 3, used to drive the main shaft 2 to rotate; a carrier 4, horizontally and symmetrically installed at the upper end of the main shaft 2; two snap rings 5, respectively hinged at both ends of the carrier 4, and can rotate along the axis perpendicular to the center line of the carrier 4; two hanging baskets 6, including a tube body 601 and a retaining ring 602 on the outer peripheral wall of the tube body 601, the upper end of the tube body 601 is open, and the lower end is provided with an adjustment hole 603, the tube body 601 is inserted into the snap ring 5, and the snap ring 5 supports below the retaining ring 602; the upper surfaces of the two snap rings 5 are provided with distinguishable positioning protrusions 501, and the lower surfaces of the two retaining rings 602 are correspondingly provided with distinguishable positioning holes 604. The above structure is an anti-mistake design, which can assemble the two snap rings 5 and the two hanging baskets 6 in one-to-one correspondence, avoiding misplacement by the operator, thus improving the operation accuracy, ensuring that the centrifuge tube consumable 8 can stay at the designated suction position after centrifugation, and facilitating the realization of one-stop closed aseptic automated extraction functions such as centrifugation, positioning, puncture, adjusting the liquid level height, controlling the extraction speed, and precise extraction volume. To achieve the above functions, in this embodiment, it can be distinguished according to the number of the positioning protrusions 501 and the positioning holes 604, such as Figure 1 As shown, the number of the positioning protrusions 501 and the positioning holes 604 on the left side is one group, and the number of the positioning protrusions 501 and the positioning holes 604 on the right side is two groups; it can also be distinguished according to the diameters of the positioning protrusions 501 and the positioning holes 604, that is, the diameters of the positioning protrusions 501 and the positioning holes 604 on one side are large, and the diameters of the positioning protrusions 501 and the positioning holes 604 on the other side are small. On this basis, the snap rings 5 and the hanging baskets 6 can also be color-matched, for example, the snap rings 5 and the hanging baskets 6 matching the centrifuge tube consumable 8 are painted orange-red to further remind the operator. Compared with the structure in the patent document (application number 202320686979.7, application date March 31, 2023), the structures of the snap rings 5 and the hanging baskets 6 are optimized, and the height is reduced. This compact design helps to realize centrifugation operations in a limited space, simplifies the structure, and reduces the equipment volume.

[0024] In the embodiment, such as Figures 1 to 2 As shown, X-shaped structures of cantilevers 401 are respectively formed at both ends of the carrier 4, hooks 402 are formed at the outer ends of the cantilevers 401, and the snap ring 5 includes a ring body 502 and suspension shafts 503 on both sides, and the suspension shafts 503 are installed in the hooks 402. This structure enables the two snap rings 5 to be stably installed at both ends of the carrier 4, with uniform left and right forces and stable rotation at high speeds.

[0025] In the embodiment, such as Figures 1 to 2As shown, the hook 402 is equipped with a cover plate 403 of an X-shaped structure consistent with the shape of the cantilever 401. After the cover plate 403 and the cantilever 401 are assembled, a closed hole is formed to prevent the snap ring 5 from coming out. The cover plate 403 of this embodiment has a limiting effect on the two snap rings 5, preventing the operator from manually changing the positions of the two snap rings 5, thereby ensuring the accurate and reliable position of the centrifuge tube consumable 8. The cover plate 403 is fixed to the cantilever 401 as a whole by bolts, and can also play a role in improving the strength of the carrier 4 and increasing the overall rigidity.

[0026] In the embodiment, Figure 4 As shown, after the suspension shaft 503 is installed in the hook 402, the axis height of the suspension shaft 503 is maintained within the height range of the cantilever 401. This structure ensures that the centrifugal force generated can act more evenly on the cantilever 401 under high-speed centrifugal conditions, improves the reliability of the equipment, and can also reduce the cross-sectional size of the cantilever 401.

[0027] In the embodiment, Figure 3 As shown, the diameter of the adjustment hole 603 is smaller than the outer diameter of the centrifuge tube consumable 8. The centrifuge tube consumable 8 used in this embodiment is as follows Figure 5 As shown, the position of the PRP liquid level in the outer shell 801 is changed by adjusting the axial movement of the piston 803. Therefore, the function of the adjustment hole 603 is to facilitate the passage of the ejector pin and directly push the adjustment piston 803. In addition, the adjustment hole 603 acts as a bottom support for the centrifuge tube consumable 8, further simplifying the positioning and assembly structure between the hanging basket and the centrifuge tube consumable 8.

[0028] In the embodiment, Figure 3 As shown, a plurality of observation holes 605 are provided on the circumferential wall of the tube body 601. Under the premise of ensuring the strength of the tube body 601, this embodiment provides a large number of observation holes 605 of larger size to ensure that the visual recognition device can accurately identify the PRP liquid level, thereby ensuring the accuracy of control.

[0029] In the embodiment, Figure 1 As shown, a baffle 7 is fixed on the main shaft 2 in the same direction as the carrier 4, and the end of the baffle 7 is used to abut the lower end of the hanging basket 6. The baffle 7 is made of metal plate, with bent parts at both ends, and has a certain elasticity, which is used to isolate the carrier 4 from the main shaft 2, to prevent the hanging baskets 6 at both ends of the carrier 4 from colliding with the main shaft 2 under the action of the swing inertia, and to ensure the safety of the equipment.

[0030] Obviously, the above embodiments of the present invention are only examples for explaining the present invention, and are not intended to limit the implementation methods of the present invention. Other obvious changes or modifications derived from the essence of the present invention still fall within the protection scope of the present invention.

Claims

1. A compact centrifuge rotating frame, comprising: A support (1) is arranged in the centrifuge; A main shaft (2) rotatably mounted on the bracket (1); A motor (3) for driving the main shaft (2) to rotate; A carrier (4) is horizontally and symmetrically mounted on the upper end of the main shaft (2); Two clamping rings (5) are respectively hinged on two ends of the carrier (4) and can rotate along an axis perpendicular to the center line of the carrier (4); Two hanging baskets (6), comprising a pipe body (601) and a support ring (602) on the outer peripheral wall of the pipe body (601), the pipe body (601) having an open upper end and an adjustment hole (603) at the lower end, the pipe body (601) being plugged into the clamping ring (5), and the clamping ring (5) being supported below the support ring (602); It is characterized in that The upper surfaces of the two clamping rings (5) are provided with mutually distinguishable positioning protrusions (501), and the lower surfaces of the two support rings (602) are correspondingly provided with mutually distinguishable positioning holes (604).

2. The compact centrifuge rotating frame according to claim 1, characterized in that: The upper surfaces of the two clamping rings (5) are provided with different numbers of positioning protrusions (501), and the lower surfaces of the two support rings (602) are provided with a corresponding number of positioning holes (604).

3. The compact centrifuge rotating frame according to claim 1, characterized in that: The upper surfaces of the two clamping rings (5) are provided with positioning protrusions (501) of different diameters, and the lower surfaces of the two support rings (602) are provided with positioning holes (604) of corresponding diameters.

4. The compact centrifuge rotating frame according to claim 1, characterized in that: Both ends of the carrier (4) respectively form cantilevers (401) of an X-shaped structure, the outer ends of the cantilevers (401) form hooks (402), and the two clamping rings (5) are assembled in the hooks (402).

5. The compact centrifuge rotating frame according to claim 4, characterized in that: The hook (402) is provided with a cover plate (403) of an X-shaped structure that is consistent with the shape of the cantilever (401); after the cover plate (403) and the cantilever (401) are assembled, a closed hole is formed to prevent the snap ring (5) from falling out.

6. The compact centrifuge rotating frame according to claim 4, characterized in that: The clamping ring (5) comprises a ring body (502) and suspension shafts (503) on both sides, and the suspension shafts (503) are installed in the hook (402).

7. The compact centrifuge rotating frame according to claim 6, characterized in that: After the suspension shaft (503) is installed in the hook (402), the axis height of the suspension shaft (503) is maintained within the height range of the cantilever (401).

8. The compact centrifuge rotating frame according to claim 1, characterized in that: The diameter of the adjustment hole (603) is smaller than the outer diameter of the centrifuge tube consumable (8).

9. The compact centrifuge rotating frame according to claim 1, characterized in that: The circumferential wall of the tube body (601) is provided with a plurality of observation holes (605).

10. The compact centrifuge rotating frame according to claim 1, characterized in that: A baffle (7) in the same direction as the carrier (4) is fixed on the main shaft (2), and the end of the baffle (7) is used to abut against the lower end of the hanging basket (6).

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