Vibration damping mounting base, centrifuge observation plate assembly, and apheresis blood component separation equipment

Abstract

The technical problem to be solved by this invention is to provide a vibration damping mounting base, a centrifuge observation plate assembly, and a single-pass blood component separation device. The centrifuge observation plate assembly and single-pass blood component separation device using this vibration damping mounting base can maintain axial positioning rigidity while effectively attenuating vibration, providing uniform clamping in the radial direction, and structurally eliminating rigid acoustic bridges, exhibiting high bonding strength. The vibration damping mounting base includes two symmetrically arranged bases, each comprising an irregularly shaped inner ring and an outer ring. The inner ring has a positioning groove, a semi-circular through hole, and an irregularly shaped groove. The gap between the outer ring and the inner ring, as well as the irregularly shaped groove, are filled with elastic damping bodies in a single, integral structure. The inner wall of the elastic damping body located within the irregularly shaped groove is provided with two semi-circular elastic clamping strips. The elastic damping body completely cuts off the metal vibration path, eliminating any metal contact between the inner and outer rings, ensuring no delamination or loosening during long-term operation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a shock-absorbing fixing base, a centrifuge observation plate assembly, and a blood component separation device for apheresis. Background Technology

[0002] The core component of apheresis blood component separation equipment is the centrifuge rotor. A typical structure consists of: a motor-driven cup holder containing a disposable centrifuge cup; a sleeve surrounding the cup holder, with a hinged observation plate at the top of the sleeve; and a mounting bracket on the observation plate to hold the stationary head of the centrifuge cup. The equipment rotates at a high speed of 5500 rpm to 7500 rpm, using centrifugal force to separate whole blood into components such as red blood cells, platelets, and plasma.

[0003] In practical use, disposable centrifuge cups exhibit significant imbalances in their rotor system due to tolerances in the blow molding and injection molding processes (uneven mass distribution, geometric deviations) and the dynamic distribution of blood during separation (e.g., the free surface passing through the geometric transition zone of the cup body when the liquid level is 120-150ml). This imbalance generates periodic vibrations under high-speed rotation. These vibrations are transmitted to the stationary head of the centrifuge cup, then amplified by the sleeve observation plate, causing noticeable noise and severely impacting user experience and separation efficiency. The existing technology has the following defects: 1. Rigid vibration transmission of the fixed seat: Traditional fixed seats are mostly made of a single metal material (such as aluminum alloy) and are machined as a whole. They are only in contact with the stationary head of the centrifuge cup through a few local point rubber columns. The overall structure lacks an effective vibration isolation layer; 2. Hard contact of the axial end face leads to direct transmission of vibration and slapping effect: Although the traditional fixed seat has 4 circumferentially distributed rubber columns on the clamping inner diameter (such as 16mm inner diameter) for radial clamping, the bottom and top ends of this diameter (i.e., the axial end faces of the fixed seat inner diameter) are in hard contact with the stationary head of the centrifuge cup, which is metal and plastic. The upper and lower bottom surfaces of the fixed seat are directly and rigidly abutted against the corresponding end faces of the stationary head of the centrifuge cup. This hard-contact structure presents a dual hazard: First, vibration energy is directly transmitted from the stationary head of the centrifuge cup to the fixed seat through the rigid end face contact, bypassing the limited damping of the radial clamping point. Second, and more seriously, when the centrifuge cup undergoes slight axial movement due to imbalance during high-speed rotation, repeated impacts and separations occur between the hard contact surfaces, resulting in a "slapping" effect. This slapping not only generates additional impact noise but also exacerbates the wear of the clamping rubber columns, potentially leading to jamming or loosening. Since the peak impact force generated by this slapping is much greater than the steady-state vibration amplitude, it poses a serious threat to the fatigue life of the equipment. 3. Point-like clamping stress concentration: The existing design with four point-like rubber columns creates localized stress concentration at the clamping points during high-speed rotation of the centrifuge cup. Long-term use easily leads to fatigue wear of the rubber columns, and the uneven distribution of clamping force affects the positioning accuracy of the centrifuge cup. 4. Rigid transmission of vibration by the observation plate: In existing technology, the fixed seat is typically locked from the bottom of the observation plate upwards with screws, which are directly screwed into the metal body of the fixed seat. Vibration energy is still directly transmitted to the observation plate through the metal screws. Even with PTFE support columns at the bottom of the observation plate, the rigid connection path between the fixed seat and the observation plate cannot be blocked, severely weakening the overall vibration isolation effect; 5. Limited function of PTFE support columns at the bottom of the observation plate: The two PTFE support columns at the bottom of the existing observation plate can only buffer the vibration between the observation plate and the sleeve, and cannot reduce the vibration energy transmitted from the fixed seat to the observation plate. It is a passive end-stage damping with limited effect; 6. Low efficiency of multi-point assembly: The traditional solution requires the separate fabrication and bonding of 4 rubber columns, increasing the assembly process and cost, and consistency is difficult to guarantee. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a shock-absorbing fixing seat, a centrifuge observation plate assembly, and a single-donor blood component separation device. The centrifuge observation plate assembly and single-donor blood component separation device using the shock-absorbing fixing seat can maintain axial positioning rigidity, effectively attenuate vibration, provide uniform clamping in the radial direction, completely cut off rigid acoustic bridges in structure, and have high bonding strength.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: the shock-absorbing fixing seat is applied to the centrifuge cup of the blood component separation equipment, including two symmetrically arranged bases, and the two bases form a ring structure;

[0006] The base includes an inner ring seat and an outer ring seat, wherein the outer ring seat is fitted on the outside of the inner ring seat and there is a gap between the two at any point.

[0007] The upper middle part of the inner ring seat is provided with a positioning groove for accommodating the stationary head positioning plate for accommodating the centrifuge cup;

[0008] The inner ring seat is provided with a semi-circular through hole for the stationary head of the centrifuge cup to pass through and is connected to the positioning groove.

[0009] The inner wall of the inner ring seat is provided with an irregular groove that communicates with a semi-circular through hole.

[0010] The gap between the outer ring seat and the inner ring seat, as well as the irregular groove, are all filled with elastic damping bodies by injection molding and are an integral structure. The inner wall of the elastic damping body located in the irregular groove coincides with the inner wall of the semi-circular through hole.

[0011] The inner wall of the elastic damper located in the irregular groove is provided with two semi-circular elastic clamping strips in the height direction. When the two bases form a ring structure, the upper end of the centrifuge cup is squeezed and fixed by the two elastic clamping strips on both sides.

[0012] Furthermore, the inner ring seat includes a first semicircular plate, a second semicircular plate, a third semicircular plate, and a fourth semicircular plate that are stacked on top of each other, and the central axes of the four plates coincide.

[0013] The diameters of the second semicircular plate, the fourth semicircular plate, the first semicircular plate, and the third semicircular plate decrease sequentially.

[0014] The positioning groove is disposed on the upper surface of the first semicircular plate and one side of its sidewall coincides with the sidewall where the diameter of the first semicircular plate is located. The bottom of the positioning groove extends to the lower middle part of the second semicircular plate.

[0015] The semi-circular through hole is located at the bottom of the positioning groove and completely penetrates the second semi-circular plate, the third semi-circular plate and the fourth semi-circular plate.

[0016] The lower surface of the third semicircular plate is provided with a first semicircular groove, and the bottom of the first semicircular groove is provided with a second semicircular groove with a diameter smaller than that of the first semicircular groove.

[0017] The upper surface of the fourth semicircular plate is provided with a third semicircular groove and its diameter is equal to the diameter of the first semicircular groove.

[0018] The two end faces of the third semi-circular plate are provided with relief grooves, which are used to connect the elastic damping body between the outer ring seat and the inner ring seat with the elastic damping body in the irregular groove.

[0019] The first semi-circular groove, the second semi-circular groove, and the third semi-circular groove together form an irregular groove;

[0020] The two semi-circular elastic clamping strips are located at the positions corresponding to the second semi-circular groove and the third semi-circular groove, respectively.

[0021] Furthermore, multiple rectangular openings are evenly distributed along the circumferential direction at the edge of the fourth semi-circular plate, and a portion of each of the rectangular openings is connected to the first semi-circular groove.

[0022] Multiple rectangular openings are injection-molded and filled with elastic damping bodies, which are integrated with the elastic damping bodies in the irregular groove.

[0023] Furthermore, the outer ring seat includes a first semi-annular plate, a second semi-annular plate, and a semi-annular side plate, with the first semi-annular plate and the second semi-annular plate respectively disposed at the upper and lower ends of the semi-annular side plate.

[0024] The inner diameter of the first semi-circular plate is greater than the diameter of the first semi-circular plate and less than the diameter of the second semi-circular plate. The inner diameter of the second semi-circular plate is greater than the diameter of the third semi-circular plate and less than the diameter of the fourth semi-circular plate.

[0025] When the outer ring seat is fitted outside the inner ring seat, the first semi-annular plate is located outside the first semi-circular plate and their upper surfaces are flush, and the second semi-annular plate is located outside the third semi-circular plate.

[0026] Furthermore, a plurality of first limiting holes are evenly distributed along the circumferential direction on the second semi-annular plate;

[0027] The second semi-circular plate is provided with a plurality of second limiting holes evenly distributed along its circumferential direction;

[0028] The bottom of the positioning groove is provided with a third limiting hole, which is connected to the semi-circular through hole and the first semi-circular groove respectively.

[0029] The third limiting hole, the multiple first limiting holes, and the multiple second limiting holes are all injection-molded and filled with elastic damping bodies, and are integrated with the elastic damping bodies between the outer ring seat and the inner ring seat.

[0030] Furthermore, both the inner and outer ring seats are made of aluminum alloy; the elastic damping body is made of TPU material with a Shore hardness of 60A-80A and a damping coefficient tanδ≥0.1.

[0031] Furthermore, the bonding surfaces of the inner ring seat and the outer ring seat undergo surface pretreatment, and the surface pretreatment is selected from at least one of the following methods;

[0032] Method 1: Perform sandblasting roughening followed by silane coupling agent treatment sequentially;

[0033] Method 2: Perform sandblasting roughening, anodizing, and silane coupling agent treatment in sequence.

[0034] The present invention also provides a centrifuge observation plate assembly, including an observation plate and the shock-absorbing fixing base described in any of the above claims;

[0035] The observation plate includes a first semicircular dividing plate and a second semicircular dividing plate arranged symmetrically.

[0036] The blood component separation device has two semi-annular observation plate outer rings symmetrically arranged above the sleeve via a hinge structure, and at least one PTFE support column is provided between the bottom of the observation plate outer ring and the sleeve.

[0037] The first and second semicircular dividing plates are detachably connected to the outer rings of the two semi-annular observation plates, and the upper surfaces of the four plates are flush.

[0038] Both the first and second semicircular plates are provided with semicircular stepped holes that are adapted to the bases, and the two bases are respectively installed in the two semicircular stepped holes by screws.

[0039] Furthermore, at least two screw holes are provided at the bottom of the first or second semicircular partition plate;

[0040] At least two threaded blind holes are provided at the bottom edge of the outer ring seat and correspond to the screw through holes. The upper end of the screw passes through the corresponding screw through hole and extends into the threaded blind hole.

[0041] The present invention also provides a blood component separation device for apheresis, characterized in that it includes the centrifuge observation plate assembly described in the above two items.

[0042] The beneficial effects of this invention are as follows:

[0043] 1. Completely cut off the metal vibration path: There is no metal contact between the inner and outer rings. Vibration must pass through the elastic damping body to be transmitted from the inner ring to the outer ring, thus completely eliminating the rigid sound bridge.

[0044] 2. Improved axial pressure bearing capacity: The continuous axial pressure borne by the inner ring is evenly transmitted to the outer ring through a large area of ​​elastic damping body, avoiding local stress concentration. At the same time, the elasticity of the elastic damping body ensures the buffering effect and solves the problem of creep under pressure of a simple elastic body.

[0045] 3. Uniform radial clamping: Two semi-circular elastic clamping strips form a clamping ring to replace discrete point-like silicone pillars, resulting in uniform pressure distribution without stress concentration.

[0046] 4. Integrated manufacturing, long-term reliability: The elastic damper is injection molded in one piece without secondary assembly, which simplifies the process, improves consistency, and has a bonding strength of ≥20MPa. It will not delaminate or loosen during long-term operation. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of the shock-absorbing fixing seat described in this invention;

[0048] Figure 2 This is a schematic diagram of the combined structure of the shock-absorbing fixing seat and the centrifugal cup stationary head described in this invention;

[0049] Figure 3 This is an exploded view of the base and the stationary head of the centrifuge cup described in this invention;

[0050] Figure 4 This is a schematic diagram of the structure of the base described in this invention;

[0051] Figure 5 This is an exploded view of the base described in this invention;

[0052] Figure 6 This is a schematic diagram of the outer ring seat described in this invention;

[0053] Figure 7 This is a schematic diagram of the structure of the elastic damper described in this invention;

[0054] Figure 8 This is a schematic diagram of the inner ring seat described in this invention;

[0055] Figure 9 This is a side view of the inner ring seat described in this invention;

[0056] Figure 10 This is a bottom view of the inner ring seat described in this invention;

[0057] Figure 11 This is a structural schematic diagram of the inner ring seat from another perspective of the present invention;

[0058] Figure 12 This is a schematic diagram of the centrifuge observation plate assembly described in this invention;

[0059] Figure 13 This is a side view of the combined structure of the observation plate outer ring, PTFE support column and base described in this invention;

[0060] Figure 14 This is a schematic diagram of the combined structure of the observation plate and the shock-absorbing fixing seat described in this invention;

[0061] Figure 15 This is a schematic diagram of the structure of the first semi-circular plate described in this invention;

[0062] Figure 16 This is an exploded view of the first semicircular dividing plate and the outer ring seat described in this invention;

[0063] Figure 17 This is a schematic diagram of the structure of a single-donor blood component separation device according to the present invention;

[0064] The markings in the diagram are as follows: Base 1, Inner ring seat 101, Outer ring seat 102, Positioning groove 2, Semi-circular through hole 3, Elastic damping body 4, Elastic clamping strip 5, First limiting hole 6, Second limiting hole 7, Third limiting hole 8, Observation plate 9, First semi-circular dividing plate 901, Second semi-circular dividing plate 902, PTFE support column 10, Semi-circular stepped hole 11, Protrusion 12, Screw 13, Screw through hole 14, Threaded blind hole 15, Stationary head 16, Positioning plate 17, Outer ring of observation plate 18, Sleeve 19;

[0065] Inner ring seat 101: First semi-circular plate 1011, second semi-circular plate 1012, third semi-circular plate 1013, fourth semi-circular plate 1014, first semi-circular groove 1015, second semi-circular groove 1016, third semi-circular groove 1017, clearance groove 1018, rectangular opening 1019;

[0066] Outer ring seat 102: First semi-annular plate 1021, second semi-annular plate 1022, semi-annular side plate 1023. Detailed Implementation

[0067] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0068] It should be noted that all directional indicator terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" in the embodiments of this application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. They are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0069] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0070] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0071] like Figure 1-11 As shown, the shock-absorbing fixing seat is used in the centrifuge cup of a blood component separation device. It includes two symmetrically arranged bases 1, which form a ring structure that can clamp and fix the stationary head 16 of the centrifuge cup.

[0072] The base 1 includes an inner ring seat 101 and an outer ring seat 102. The outer ring seat 102 is sleeved on the outside of the inner ring seat 101 and there is a gap between them at any part. Preferably, the gap between the outer ring seat 102 and the inner ring seat 101 is uniform and between 1.5-2.5mm.

[0073] The upper middle part of the inner ring seat 101 is provided with a positioning groove 2 for accommodating the positioning plate 17 on the stationary head 16 of the centrifuge cup;

[0074] The inner ring seat 101 is provided with a semi-circular through hole 3 for the stationary head 16 of the centrifuge cup to pass through and is connected to the positioning groove 2.

[0075] The inner wall of the inner ring seat 101 is provided with an irregular groove that communicates with the semi-circular through hole 3.

[0076] The gap between the outer ring seat 102 and the inner ring seat 101 and the irregular groove are both filled with elastic damping bodies 4 and are an integral structure. The elastic damping bodies 4 are filled in the irregular groove structure to form a mechanical lock to prevent the inner ring and the outer ring from axially separating. They do not delaminate or loosen during long-term operation. The bonding area is increased by more than 50% compared with the planar structure, and the bonding strength is ≥20MPa, which is much higher than the conventional level. Preferably, the gap between the outer ring seat 102 and the inner ring seat 101 is 2mm, that is, the thickness of the elastic damping body 4 filled in the gap between the outer ring seat 102 and the inner ring seat 101 is 2mm. The inner sidewall of the elastic damping body 4 located in the irregular groove coincides with the inner sidewall of the semi-circular through hole 3.

[0077] The inner wall of the elastic damper 4 located in the irregular groove has two semi-circular elastic clamping strips 5 in the height direction. When the two bases 1 form a ring structure, the stationary head 16 of the centrifuge cup is squeezed and fixed by the two elastic clamping strips 5 on both sides. That is, the two elastic clamping strips 5 on both sides form two upper and lower clamping rings to clamp and fix the stationary head 16 of the centrifuge cup, while playing a shock absorption role.

[0078] like Figure 3-5 , Figure 8-11 As shown, in this embodiment, preferably, the inner ring seat 101 includes a first semicircular plate 1011, a second semicircular plate 1012, a third semicircular plate 1013, and a fourth semicircular plate 1014 that are stacked and arranged in a coinciding manner, and the central axes of the four plates coincide. The end faces of the diameters of the first semicircular plate 1011, the second semicircular plate 1012, the third semicircular plate 1013, and the fourth semicircular plate 1014 are flush.

[0079] The diameters of the second semicircular plate 1012, the fourth semicircular plate 1014, the first semicircular plate 1011, and the third semicircular plate 1013 decrease sequentially, forming a stepped irregular structure.

[0080] The positioning groove 2 is provided on the upper surface of the first semi-circular plate 1011 and one side wall of the groove coincides with the side wall where the diameter of the first semi-circular plate 1011 is located. The bottom of the positioning groove 2 extends to the lower middle part of the second semi-circular plate 1012. The positioning groove 2 is used to place the positioning plate 17 of the stationary head 16 of the centrifuge cup, so as to achieve positioning and support.

[0081] The semi-circular through hole 3 is located at the bottom of the positioning groove 2 and completely penetrates the second semi-circular plate 1012, the third semi-circular plate 1013 and the fourth semi-circular plate 1014.

[0082] The lower surface of the third semi-circular plate 1013 is provided with a first semi-circular groove 1015, and the bottom of the first semi-circular groove 1015 is provided with a second semi-circular groove 1016 with a diameter smaller than that of the first semi-circular groove 1015.

[0083] The upper surface of the fourth semi-circular plate 1014 is provided with a third semi-circular groove 1017 and its diameter is equal to the diameter of the first semi-circular groove 1015.

[0084] The two end faces of the third semi-circular plate 1013 are provided with relief grooves 1018. The relief grooves 1018 are used to connect the elastic damping body 4 between the outer ring seat 102 and the inner ring seat 101 and the elastic damping body 4 in the irregular groove into one piece. At the same time, it can ensure that the broken end face of the elastic damping body 4 is flush with the end face of the first semi-circular plate 1011 and will not protrude and cause unnecessary impact.

[0085] The first semi-circular groove 1015, the second semi-circular groove 1016, and the third semi-circular groove 1017 together form an irregular groove. The design of the irregular groove makes the elastic shock absorber 4 more stable.

[0086] The two semi-circular elastic clamping strips 5 are located at the positions corresponding to the second semi-circular groove 1016 and the third semi-circular groove 1017, respectively. The two semi-circular elastic clamping strips 5 on both sides form two clamping rings to replace the discrete point-like silicone pillars. The two clamping rings formed can clamp and fix the area of ​​the stationary head 16 of the centrifuge cup. Since it is a ring structure, the pressure distribution is uniform and there is no stress concentration.

[0087] like Figure 10 , Figure 11 As shown, in this embodiment, in order to further improve the stability of the elastic damper 4, a plurality of rectangular openings 1019 are evenly distributed along the circumferential direction at the edge of the fourth semi-circular plate 1014, and a portion of the plurality of rectangular openings 1019 are connected to the first semi-circular groove 1015.

[0088] Multiple rectangular openings 1019 are injection-molded and filled with elastic damping bodies 4, which are integrated with the elastic damping bodies 4 in the irregular groove. The interlocking of the inner and outer parts and the partial opening provide double locking, further preventing the elastic damping bodies 4 from coming out and effectively improving stability.

[0089] like Figure 6 As shown, in this embodiment, preferably, the outer ring seat 102 includes a first semi-annular plate 1021, a second semi-annular plate 1022, and a semi-annular side plate 1023, with the first semi-annular plate 1021 and the second semi-annular plate 1022 respectively disposed at the upper and lower ends of the semi-annular side plate 1023.

[0090] The inner diameter of the first semi-circular plate 1021 is greater than the diameter of the first semi-circular plate 1011 and less than the diameter of the second semi-circular plate 1012. The inner diameter of the second semi-circular plate 1022 is greater than the diameter of the third semi-circular plate 1013 and less than the diameter of the fourth semi-circular plate 1014.

[0091] When the outer ring seat 102 is fitted on the outside of the inner ring seat 101, the first semi-annular plate 1021 is located outside the first semi-circular plate 1011 and the upper surfaces of the two are flush. The second semi-annular plate 1022 is located outside the third semi-circular plate 1013. Through this staggered fit, rigid contact between the outer ring seat 102 and the inner ring seat 101 can be avoided. That is, there is no metal contact between the outer ring seat 102 and the inner ring seat 101. Vibration transmitted from the inner ring seat 101 to the outer ring seat 102 must pass through the elastic damping body 4, thereby completely eliminating the rigid sound bridge.

[0092] like Figure 6 , Figure 7 , Figure 8 As shown, in this embodiment, in order to prevent the elastic damper 4 from rotating, a plurality of first limiting holes 6 are evenly distributed on the second semi-annular plate 1022 along its circumferential direction.

[0093] The second semi-circular plate 1012 is provided with a plurality of second limiting holes 7 evenly distributed along its circumferential direction;

[0094] The bottom of the positioning groove 2 is provided with a third limiting hole 8, which is connected to the semi-circular through hole 3 and the first semi-circular groove 1015 respectively.

[0095] The third limiting hole 8, the multiple first limiting holes 6, and the multiple second limiting holes 7 are all injection-molded with elastic damping bodies 4 and are integrated with the elastic damping bodies 4 between the outer ring seat 102 and the inner ring seat 101. The elastic damping bodies 4 can be limited by squeezing the injection-molded elastic damping bodies 4 through the third limiting hole 8, the multiple first limiting holes 6, and the multiple second limiting holes 7, so as to prevent the elastic damping bodies 4 from rotating as a whole.

[0096] In this embodiment, preferably, both the inner ring seat 101 and the outer ring seat 102 are made of aluminum alloy, or stainless steel, and are integrally milled and formed by T-slot milling cutter or turning. The elastic damping body 4 is made of TPU material with a Shore hardness of 60A-80A and a damping coefficient tanδ≥0.1. The TPU material can also be replaced with LSR liquid silicone, which requires the use of a silicone-specific primer and injection molding equipment.

[0097] like Figure 1 , Figure 2 , Figure 4 As shown, in this embodiment, in order to facilitate the processing of the inner ring seat 101 and the outer ring seat 102 and to protect the stationary head 16 of the centrifuge cup, the upper surface of the first semi-circular plate 1011 is provided with an L-shaped protrusion 12 located at the edge of the positioning groove 2. The L-shaped protrusion 12 plays a positioning role in the mold and plays a foolproof role in the centrifuge observation plate 9 assembly.

[0098] In this embodiment, preferably, the bonding surfaces of the inner ring seat 101 and the outer ring seat 102 are subjected to surface pretreatment, and the surface pretreatment is selected from at least one of the following methods;

[0099] Method 1: Perform sandblasting roughening and silane coupling agent treatment in sequence. Specifically, all bonding surfaces of the inner ring seat 101 and outer ring seat 102 are sandblasted with 80-mesh white corundum (Ra 1.6-3.2μm), ultrasonically degreased and cleaned, and treated with KH-560 silane coupling agent for double self-assembly; injection molding is completed within 60 minutes.

[0100] Method 2: Sequentially perform sandblasting roughening, anodizing, and silane coupling agent treatment; specifically, perform 80-mesh white corundum sandblasting (Ra≈2.4μm) on all bonding surfaces of the inner ring seat 101 and outer ring seat 102; immerse the sandblasted aluminum alloy parts in a phosphoric acid anodizing bath (phosphoric acid concentration 80-100g / L), voltage 15-20V, temperature 20±2℃, for 30-45 minutes to form an oxide film layer with nanopores on the surface. After anodizing, wash with deionized water, and strictly prohibit any sealing treatment; similar to Method 1, KH-560 double self-assembly; injection molding completed within 60 minutes;

[0101] Injection molding is performed in-mold injection. Specifically, the pre-treated inner ring seat 101 and outer ring seat 102 are fixed in the injection mold at their interlocking positions, maintaining all gaps between the inner ring seat 101 and outer ring seat 102 at 2.0mm; the mold is preheated to 70℃, and the metal insert is preheated to 110℃; the TPU material (hardness 70A) is injected at 210℃, with an injection pressure of 10MPa and a holding pressure of 12 seconds; the TPU melt is fully filled: all gaps between the inner ring seat 101 and outer ring seat 102 are opened up, forming a continuous TPU elastomer in one step, while simultaneously forming two semi-circular elastic clamping strips 5. It should be noted that the elastic clamping strips 5 are formed by the mold.

[0102] like Figure 12-16 As shown, the present invention also provides a centrifuge observation plate assembly, including an observation plate 9 and the shock-absorbing fixing seat described in any of the above claims;

[0103] The observation plate 9 includes a first semicircular dividing plate 901 and a second semicircular dividing plate 902 arranged symmetrically;

[0104] The blood component separation device has two semi-annular observation plate outer rings 18 symmetrically arranged above the sleeve 19 via a hinged structure. One end of each semi-annular observation plate outer ring 18 has a hinged structure, allowing one end to be opened; the other end has a locking structure, preventing them from separating arbitrarily. At least one PTFE support column 10 is provided between the bottom of each observation plate outer ring 18 and the sleeve 19, near the locking structure. This PTFE support column, in conjunction with the existing PTFE support column at the bottom of the observation plate 9, forms a complete vibration isolation link, achieving three levels of vibration isolation: the first level (flexible...) Clamping: The clamping ring formed by the two semi-circular elastic clamping strips 5 inside the inner ring seat 101 is interference-fitted with the outer wall of the centrifuge cup stationary head 16, elastically absorbing radial impact; Second stage (complete vibration isolation of inner and outer ring seats 102): A 2.0mm uniform TPU layer between the inner and outer ring seats 102 forces all vibration energy to pass through the high-damping TPU elasticity when transmitted from the inner ring seat 101 to the outer ring seat 102, ensuring a buffering effect; Third stage (end buffering): The PTFE support column 10 at the bottom of the outer ring 18 of the observation plate buffers the residual vibration between the outer ring 18 of the observation plate and the sleeve 19; The three-stage vibration isolation significantly improves the overall NVH (noise and vibration) performance of the machine.

[0105] The first semicircular dividing plate 901 and the second semicircular dividing plate 902 are detachably connected to the outer rings 18 of the two semi-annular observation plates, and the upper surfaces of the four are flush. Matching mating grooves are provided at the upper edge of the outer end of the semicircular dividing plate and the lower edge of the inner end of the outer ring 18 of the observation plate, and then connected by screws 13.

[0106] The first semicircular dividing plate 901 and the second semicircular dividing plate 902 are each provided with a semicircular stepped hole 11 that matches the base 1. The two bases 1 are respectively set in the two semicircular stepped holes 11 by screws 13. The outer ring 18 of the observation plate, the corresponding first semicircular dividing plate 901 and the corresponding base 1 can be opened by the hinge structure. The centrifuge cup is placed in the cup holder of the blood component separation device. The outer ring 18 of the observation plate, the corresponding first semicircular dividing plate 901 and the corresponding base 1 on both sides are brought close to each other until they are closed and then locked, so that the stationary head 16 of the centrifuge cup can be clamped and fixed.

[0107] like Figure 12-16 As shown, in this embodiment, preferably, the bottom of the first semicircular dividing plate 901 or the second semicircular dividing plate 902 is provided with at least two screw holes 14.

[0108] At least two threaded blind holes 15 are provided at the bottom edge of the outer ring seat 102 and correspond to the screw through holes 14. That is, the threaded blind holes 15 are provided on the lower end face of the semi-annular side plate 1023. The upper end of the screw 13 passes through the corresponding screw through hole 14 and extends into the threaded blind hole 15, effectively avoiding the influence of the screw 13 on the elastic damping body 4.

[0109] like Figure 17 As shown, the present invention also provides a single-donor blood component separation device, characterized in that it includes a centrifuge observation plate assembly as described in any one of the above two items.

[0110] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A shock-absorbing mounting base, used for centrifuge cups in blood component separation equipment, characterized in that: It includes two symmetrically arranged bases (1), and the two bases (1) form a ring structure; The base (1) includes an inner ring seat (101) and an outer ring seat (102), wherein the outer ring seat (102) is fitted on the outside of the inner ring seat (101) and there is a gap between them at any part; The upper middle part of the inner ring seat (101) is provided with a positioning groove (2) for accommodating the positioning plate (17) on the stationary head (16) of the centrifuge cup. The inner ring seat (101) is provided with a semi-circular through hole (3) through which the stationary head (16) of the centrifuge cup passes and is connected to the positioning groove (2); The inner wall of the inner ring seat (101) is provided with a shaped groove and is connected to the semi-circular through hole (3); The gap between the outer ring seat (102) and the inner ring seat (101) and the irregular groove are filled with elastic damping bodies (4) and are an integral structure. The inner wall of the elastic damping body (4) located in the irregular groove coincides with the inner wall of the semi-circular through hole (3). The inner wall of the elastic damper (4) located in the irregular groove has two semi-circular elastic clamping strips (5) in the height direction. When the two bases (1) form a ring structure, the stationary head (16) of the centrifugal cup is squeezed and fixed by the two elastic clamping strips (5) on both sides.

2. The shock-absorbing fixing base according to claim 1, characterized in that: The inner ring seat (101) includes a first semicircular plate (1011), a second semicircular plate (1012), a third semicircular plate (1013), and a fourth semicircular plate (1014) that are arranged in an overlapping manner, and the central axes of the four plates coincide. The diameters of the second semicircular plate (1012), the fourth semicircular plate (1014), the first semicircular plate (1011), and the third semicircular plate (1013) decrease sequentially. The positioning groove (2) is provided on the upper surface of the first semi-circular plate (1011) and one side wall of the groove coincides with the side wall where the diameter of the first semi-circular plate (1011) is located. The bottom of the positioning groove (2) extends to the lower middle part of the second semi-circular plate (1012). The semi-circular through hole (3) is set at the bottom of the positioning groove (2) and completely penetrates the second semi-circular plate (1012), the third semi-circular plate (1013) and the fourth semi-circular plate (1014). The lower surface of the third semi-circular plate (1013) is provided with a first semi-circular groove (1015), and the bottom of the first semi-circular groove (1015) is provided with a second semi-circular groove (1016) and its diameter is smaller than the diameter of the first semi-circular groove (1015). The upper surface of the fourth semicircular plate (1014) is provided with a third semicircular groove (1017) and its diameter is equal to the diameter of the first semicircular groove (1015); The two end faces of the third semi-circular plate (1013) are provided with relief grooves (1018), which are used to connect the elastic damping body (4) between the outer ring seat (102) and the inner ring seat (101) and the elastic damping body (4) in the irregular groove into one piece. The first semi-circular groove (1015), the second semi-circular groove (1016), and the third semi-circular groove (1017) together form an irregular groove; The two semi-circular elastic clamping strips (5) are located at the positions corresponding to the second semi-circular groove (1016) and the third semi-circular groove (1017), respectively.

3. The shock-absorbing fixing base according to claim 2, characterized in that: The fourth semi-circular plate (1014) has multiple rectangular openings (1019) evenly distributed along its circumferential direction at its edge, and a portion of each of the multiple rectangular openings (1019) is connected to the first semi-circular groove (1015). Multiple rectangular openings (1019) are injection-molded and filled with elastic damping bodies (4) and are integrated with the elastic damping bodies (4) in the irregular groove.

4. The shock-absorbing fixing base according to claim 3, characterized in that: The outer ring seat (102) includes a first semi-annular plate (1021), a second semi-annular plate (1022), and a semi-annular side plate (1023). The first semi-annular plate (1021) and the second semi-annular plate (1022) are respectively disposed at the upper and lower ends of the semi-annular side plate (1023). The inner diameter of the first semi-circular plate (1021) is greater than the diameter of the first semi-circular plate (1011) and less than the diameter of the second semi-circular plate (1012). The inner diameter of the second semi-circular plate (1022) is greater than the diameter of the third semi-circular plate (1013) and less than the diameter of the fourth semi-circular plate (1014). When the outer ring seat (102) is fitted on the outside of the inner ring seat (101), the first semi-annular plate (1021) is located outside the first semi-circular plate (1011) and their upper surfaces are flush, and the second semi-annular plate (1022) is located outside the third semi-circular plate (1013).

5. The shock-absorbing fixing base according to claim 4, characterized in that: The second semi-annular plate (1022) is provided with a plurality of first limiting holes (6) evenly distributed along its circumferential direction; The second semi-circular plate (1012) is provided with a plurality of second limiting holes (7) evenly distributed along its circumferential direction; The bottom of the positioning groove (2) is provided with a third limiting hole (8) and is connected to the semi-circular through hole (3) and the first semi-circular groove (1015) respectively; The third limiting hole (8), multiple first limiting holes (6), and multiple second limiting holes (7) are all injection-molded with elastic damping bodies (4) and are integrated with the elastic damping bodies (4) between the outer ring seat (102) and the inner ring seat (101).

6. The shock-absorbing fixing base according to claim 5, characterized in that: The inner ring seat (101) and the outer ring seat (102) are both made of aluminum alloy; the elastic damping body (4) is made of TPU material with a Shore hardness of 60A-80A and a damping coefficient tanδ≥0.

1.

7. The shock-absorbing fixing base according to claim 6, characterized in that: The bonding surfaces of the inner ring seat (101) and the outer ring seat (102) are subjected to surface pretreatment, the surface pretreatment being selected from at least one of the following methods; Method 1: Perform sandblasting roughening followed by silane coupling agent treatment sequentially; Method 2: Perform sandblasting roughening, anodizing, and silane coupling agent treatment in sequence.

8. A centrifuge observation plate assembly, characterized in that, Includes an observation plate (9) and a shock-absorbing mounting base as described in any one of claims 1 to 7; The observation plate (9) includes a first semicircular plate (901) and a second semicircular plate (902) arranged symmetrically. The upper part of the sleeve (19) of the blood component separation device is symmetrically provided with two semi-annular observation plate outer rings (18) through a hinge structure, and at least one PTFE support column (10) is provided between the bottom of the observation plate outer ring (18) and the sleeve (19). The first semicircular dividing plate (901) and the second semicircular dividing plate (902) are detachably connected to the outer ring (18) of the two semi-annular observation plates, and the upper surfaces of the four are flush. The first semicircular partition plate (901) and the second semicircular partition plate (902) are each provided with a semicircular stepped hole (11) that is compatible with the base (1). The two bases (1) are respectively set in the two semicircular stepped holes (11) by screws (13).

9. The centrifuge observation plate (9) assembly according to claim 8, characterized in that: The bottom of the first semicircular plate (901) or the second semicircular plate (902) is provided with at least two screw holes (14). At least two threaded blind holes (15) are provided at the bottom edge of the outer ring seat (102) and correspond to the screw through hole (14). The upper end of the screw (13) passes through the corresponding screw through hole (14) and extends into the threaded blind hole (15).

10. A single-donor blood component separation device, characterized in that: Includes the centrifuge observation plate assembly as described in claim 8 or 9.

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