Mounting mechanism and blood component separator

Abstract

The application relates to the technical field of medical devices, and discloses a mounting mechanism and a blood component separation machine, which comprise a connecting piece, a hanging needle assembly and a linkage assembly. The connecting piece is provided with a first inclined surface, and the rear side of the first inclined surface is provided with an abutting portion; the linkage assembly comprises a guide piece and a follower, the follower is movably arranged between the guide piece and the connecting piece, the follower is driven to move and has a first stroke and a second stroke, in application, the follower abuts against the first inclined surface and slides along the first inclined surface in the first stroke, so as to limit the front and back positions of the connecting piece, and the follower abuts against the abutting portion when moving backward at the set position of the second stroke, so as to drive the connecting piece to move backward, and the hanging needle assembly moves backward together with the connecting piece. The hanging needle assembly has multiple action requirements of keeping stable abutment, moving backward for adjustment, moving forward for return, can effectively ensure that a blood bag always keeps a suitable hanging state in the separation process, and avoids problems caused by improper positions.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a mounting mechanism and a blood component separator. Background Technology

[0002] Blood component separators are used to separate different components from blood. They typically employ a mounting mechanism to suspend the blood bag (mother bag) containing the components to be separated. A moving extrusion plate squeezes the mother bag, forcing the components to be separated out and transporting them through tubing to other containers (such as other blood bags). In related technologies, the mounting mechanism uses a hanging needle to hold the mother bag, employing a spring-loaded telescopic mechanism to move the needle according to any changes in the mother bag's position. However, this mounting mechanism is not ideal in practical applications. During blood separation, as the spring deforms, the return force increases, leading to increased resistance on the hanging needle. This can easily cause the mother bag to fail to effectively adhere to the extrusion surface, thus affecting the blood separation effect. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a mounting mechanism and a blood component separator including the mounting mechanism.

[0004] In a first aspect, the mounting mechanism of this application embodiment includes a connector, a mounting pin assembly, and a linkage assembly;

[0005] The connector has a first inclined surface on one side, the first inclined surface is forward and downward along the first direction, and the connector has an abutment part on the rear side of the first inclined surface;

[0006] The needle attachment assembly is connected to the connector and extends forward along a first direction for attaching a blood bag;

[0007] The linkage component includes a guide and a follower. The guide is disposed on the side of the connector with the first inclined surface. The follower is movably disposed between the guide and the connector. The follower is driven to move and has a first stroke and a second stroke. The first stroke is located in front of the second stroke. In the first stroke, the follower abuts against the first inclined surface and slides along the first inclined surface to limit the front and rear position of the connector. When the follower moves backward at a set position in the second stroke, it abuts against the abutting part to drive the connector to move backward.

[0008] The mounting mechanism according to the embodiments of this application has at least the following beneficial effects: In application, the follower abuts against the first inclined surface and slides along the first inclined surface during the first stroke to limit the front and rear positions of the connecting member, thus keeping the needle assembly stable in this state. When the follower moves backward at the set position of the second stroke, it abuts against the abutment part to drive the connecting member to move backward, causing the needle assembly to move backward with the connecting member. This realizes the multiple action requirements of the needle assembly to maintain stable contact, adjust backward movement, and return to its original position as the follower moves. When the mounting mechanism is applied to a blood component separator, it can effectively ensure that the blood bag always maintains a suitable suspension state during the separation process, avoiding the problem of reduced separation efficiency or damage to blood components due to improper positioning. It effectively solves the problems of unstable position and inaccurate measurement of blood bag separation parameters caused by adjusting the needle position with a spring in the existing design.

[0009] Optionally, the guide member is provided with a first guide groove and a second guide groove. The first guide groove is in the same direction as the inclination of the first inclined surface, and the second guide groove is connected to the first guide groove and extends backward along the first direction. The follower moves along the first guide groove during the first stroke and moves along the second guide groove during the second stroke.

[0010] Optionally, the upper end of the follower is provided with a second inclined surface, which is parallel to the first inclined surface, and the second inclined surface contacts the first inclined surface during the first stroke.

[0011] Optionally, the follower has a guide portion on the side facing the guide member, and the guide portion can slide or roll along the first guide groove and the second guide groove;

[0012] And / or, the follower has a sliding part on the side opposite to the guide, the sliding part extends in the vertical direction, and the follower can be driven to move in the vertical direction relative to the guide through the sliding part.

[0013] Optionally, the linkage component further includes a position detector connected to the guide member for detecting the origin position of the follower member. When the follower member is at the origin position, the follower member is located at the rear end of the first stroke and abuts against the first inclined surface.

[0014] Optionally, the abutting portion includes a downwardly extending first abutting surface, the lower end of the first abutting surface being lower than the upper end of the first inclined surface, and the follower abutting against the first abutting surface rearward during the second stroke;

[0015] Alternatively, the abutting portion includes an extension portion and a fine-tuning member. The extension portion extends downward, and the fine-tuning member is connected to the extension portion. The position of the front end of the fine-tuning member relative to the extension portion along the first direction is adjustable. The lower side of the fine-tuning member is lower than the upper end of the first inclined surface. The follower abuts against the front end of the fine-tuning member in the second stroke.

[0016] Optionally, the connector further includes a second abutting surface, which extends along a first direction and faces downward. The second abutting surface is connected between the upper end of the first inclined surface and the abutting portion, and the upper end of the follower abuts against the second abutting surface during the second stroke.

[0017] Secondly, the blood component separator of this application includes: a main body, a squeezing mechanism, and a mounting mechanism as described in the first aspect embodiment.

[0018] In the mounting mechanism, the connector is movably connected to the main body along the first direction, and the guide is fixedly connected to the main body;

[0019] The extrusion mechanism includes a movable plate and an extrusion drive assembly. The movable plate is located on the outside of the main body. The follower is movably connected to the extrusion drive assembly in the vertical direction. The extrusion drive assembly is connected to the main body and the movable plate and is used to drive the movable plate to move back and forth in the first direction from the initial position, while driving the follower to move in the first stroke and the second stroke.

[0020] When the moving plate is in the initial position, the upper end of the follower abuts against the first inclined surface; while the moving plate moves in front of the initial position, the follower moves along the first stroke; while the moving plate moves behind the initial position, the follower moves along the second stroke.

[0021] The blood component separator according to the embodiments of this application has at least the following beneficial effects: when the squeezing drive assembly drives the moving plate to move, the follower moves accordingly, driving the needle hanging assembly to achieve the required actions such as stable contact, backward adjustment, and forward return. Therefore, the stroke of the follower can be linked with the movement of the moving plate to ensure that the needle hanging assembly adaptively adjusts its position, ensuring convenient blood bag mounting and accurate blood component separation.

[0022] Optionally, the extrusion mechanism further includes a first fixing plate and a second fixing plate disposed opposite to each other on both sides of the movable plate along the first direction, the first fixing plate and the second fixing plate being connected to the host, and the hanging pin assembly being located above the first fixing plate;

[0023] When the movable plate is in the initial position, the movable plate has a first distance from the second fixed plate, and the movable plate has a second distance from the first fixed plate;

[0024] The length of the first travel along the first direction is not less than the first spacing, and the length of the second travel along the first direction is not less than the second spacing.

[0025] Optionally, the blood component separator further includes at least one sensor, and a plurality of the sensors are arranged vertically at intervals on the first fixed plate; the detection end of the sensor faces the moving plate, and the sensor is used to detect the layering of blood components in the blood bag attached to the needle assembly.

[0026] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a mounting mechanism and a blood component separator according to an embodiment of this application;

[0028] Figure 2 for Figure 1 The diagram shows another perspective of the structure, illustrating the state in which the guide is moved a certain distance away from one side of the follower in order to show the structure of the follower;

[0029] Figure 3 This is a partial structural diagram of a blood component separator according to an embodiment of this application, illustrating the state of the moving plate in its initial position;

[0030] Figure 4 This is a partial structural diagram of a blood component separator according to an embodiment of the present application, showing the state in which the moving plate is located in front of the initial position;

[0031] Figure 5 This is a partial structural diagram of a blood component separator according to an embodiment of the present application, illustrating the state in which the moving plate is located behind the initial position;

[0032] Figure 6 for Figure 2 A magnified view of point I in the diagram;

[0033] Figure 7 This is a schematic diagram of a portion of the structure in a blood component separator according to an embodiment of this application from another perspective;

[0034] Figure 8 This is a front view of a portion of the structure of a blood component separator according to an embodiment of this application.

[0035] Figure label:

[0036] Main body 100;

[0037] Mounting mechanism 200;

[0038] Connector 210; First inclined surface 211; Abutting part 212; First abutting surface 2121; Extension part 2122; Fine-tuning part 2123; Second abutting surface 213;

[0039] 220 pin mounting assembly;

[0040] Linkage component 230; guide component 231; first guide groove 2311; second guide groove 2312; follower component 232; first stroke 232a; second stroke 232b; second inclined surface 2321; guide part 2322; sliding part 2323; position detector 233; light baffle 234;

[0041] Extrusion mechanism 300; moving plate 310; extrusion drive assembly 320; motor 321; synchronous belt mechanism 322; drive shaft 323; drive component 324; first fixed plate 330; second fixed plate 340;

[0042] Sliding component 400; Sensor 500;

[0043] Initial position A; origin position B; mother bag C. Detailed Implementation

[0044] The following will clearly and completely describe the concept and technical effects of this application in conjunction with embodiments, so as to fully understand the purpose, features and effects of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application.

[0045] In the description of the embodiments of this application, if directional descriptions are involved, such as "up", "down", "front", "back", "left", "right" etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] In the description of the embodiments of this application, if a feature is referred to as "setting," "fixing," "connecting," or "installing" on another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of this application, if "several" is involved, it means one or more; if "multiple" is involved, it means two or more; if "greater than," "less than," or "exceeds," it should be understood as excluding the stated number; if "above," "below," or "within," it should be understood as including the stated number. If "first" or "second" is involved, it should be understood as used to distinguish technical features, and not as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0047] refer to Figure 1 and Figure 2 The mounting mechanism 200 of this application embodiment is applied to a blood component separator. The mounting mechanism 200 includes a connector 210, a needle mounting assembly 220, and a linkage assembly 230.

[0048] The connector 210 has a first inclined surface 211 on one side, which is inclined forward and downward in a first direction. The connector 210 has an abutment portion 212 on the rear side of the first inclined surface 211. The needle attachment assembly 220 is connected to the connector 210 and extends forward in the first direction for attaching blood bags (e.g., the mother bag C to be separated).

[0049] The linkage assembly 230 includes a guide member 231 and a follower member 232. The guide member 231 is disposed on the side of the connector 210 having a first inclined surface 211. The follower member 232 is movably disposed between the guide member 231 and the connector 210. For example, the connector 210 has a first side and a second side facing each other. The first side of the connector 210 has a first inclined surface 211, and the guide member 231 is disposed beside the first side of the connector 210. The guide member 231 and the first side can be close to each other or have a certain gap. The follower member 232 is driven to move and has a first stroke 232a and a second stroke 232b. The first stroke 232a is located in front of the second stroke 232b.

[0050] In this configuration, the follower 232 abuts against the first inclined surface 211 and slides along the first inclined surface 211 during the first stroke 232a, thereby limiting the front-to-back position of the connector 210. Therefore, the pin assembly 220 remains stable in this state. When the follower 232 moves backward from the set position during the second stroke 232b, it abuts against the abutment portion 212, causing the connector 210 to move backward, so that the pin assembly 220 moves backward along with the connector 210. Thus, the pin assembly 220 can adaptively adjust its state or position according to the movement of the follower 232, including: the pin assembly 220 can remain in a fixed position as the follower 232 abuts against the first inclined surface 211 during the first stroke 232a; the pin assembly 220 can move backward to adjust its position as the follower 232 moves backward from the set position during the second stroke 232b; and the pin assembly 220 can move forward to adjust its position as the follower 232 moves forward during the second stroke 232b. Therefore, the mounting mechanism 200, when applied to a blood component separator, effectively ensures that the mother bag C maintains a suitable suspension state throughout the separation process, avoiding poor separation results due to improper positioning. It effectively solves problems such as unstable positioning and inaccurate measurement of separation parameters of the mother bag C caused by adjusting the hanging pin position with a spring in existing designs.

[0051] For example, a blood component separator typically includes a main body 100, a moving plate 310, and a compression drive assembly 320. After centrifugation, blood bags can be suspended outside the main body 100. After centrifugation, different blood components inside the blood bag are in a stratified state. The compression drive assembly 320 drives the moving plate 310 to move back and forth to compress the blood bag, thereby squeezing some of the blood components inside the blood bag into other blood bags connected to it, thus achieving component separation. The mounting mechanism 200 is used in the blood component separator. The needle mounting assembly 220 is used to mount the mother bag C containing the blood components to be separated. The connector 210 is connected to the needle mounting assembly 220 and the main body 100. The follower 232 in the linkage assembly 230 is adapted to connect to the compression drive assembly 320 used to drive the moving plate 310 to move. Therefore, while the extrusion drive assembly 320 drives the moving plate 310 to move, it also drives the follower 232 to move along with the moving plate 310. This movement of the follower 232 causes the needle attachment assembly 220 to adaptively achieve the various action requirements mentioned above, such as maintaining a fixed position, adjusting the position backward, and adjusting the position forward. Therefore, when the mounting mechanism 200 of this application is applied to a blood component separator, the first stroke 232a and the second stroke 232b of the follower 232 can be configured according to the movement of the moving plate 310. This ensures that the needle attachment assembly 220 adaptively adjusts to a suitable position as the moving plate 310 is in different positions, thereby ensuring that the mother bag C maintains a suitable suspension state during the separation process and avoiding poor separation results due to improper positioning.

[0052] refer to Figures 3 to 5In some embodiments of the mounting mechanism 200, the guide member 231 may be provided with a guide groove to restrict or guide the movement of the follower member 232. For example, the guide member 231 is provided with a first guide groove 2311 and a second guide groove 2312. The first guide groove 2311 is used to guide the follower member 232 to move in the first stroke 232a, and the second guide groove 2312 is used to guide the follower member 232 to move in the second stroke 232b. The first guide groove 2311 is in the same direction of inclination as the first inclined surface 211, and the second guide groove 2312 connects to the first guide groove 2311 and extends rearward along the first direction. The follower member 232 moves along the first guide groove 2311 in the first stroke 232a and moves along the second guide groove 2312 in the second stroke 232b.

[0053] During operation, when the follower 232 moves along the first guide groove 2311, its trajectory is constrained by the groove shape, ensuring close contact with the first inclined surface 211. When the follower 232 moves along the second guide groove 2312, the groove design allows it to accurately avoid contact with the first inclined surface 211. During its backward movement, it abuts against the contact part 212 at a set position, driving the pin assembly 220 backward. This achieves smooth backward movement of the connector 210 and the pin assembly 220, avoiding interference with the backward movement of the pin assembly 220. Furthermore, during the follower 232's forward movement along the second guide groove 2312 from the rear end, upon re-contacting the first inclined surface 211, it drives the connector 210 and the pin assembly 220 forward back to their original position B. This ensures that the follower 232 accurately abuts against the corresponding parts in both strokes, further optimizing the stability and adjustment accuracy of the pin assembly 220.

[0054] It is understandable that, since the first inclined surface 211 is inclined from back to front and downward, the follower 232 can have forward and upward components of force while abutting against the first inclined surface 211. The connector 210 is movably arranged along the first direction. When the follower 232 is at the origin position B, the front end of the connector 210 abuts against the main body 100. The upward position of the connector 210 is restricted. Therefore, the connector 210 can remain abutting against the main body 100 under the forward component of force of the follower 232. Thus, the connector 210 can maintain a stable position and will not move backward, thereby maintaining the stable position of the pin assembly 220. Therefore, when the follower 232 is at the origin position B and moves in the first stroke 232a, the front end of the connector 210 remains abutting against the main body 100, so that the pin assembly 220 will not move backward due to external force. In practical applications, the bag hanging operation can be performed when the moving plate 310 is in the initial position A. At this time, the follower 232 is in the origin position B, and the position of the hanging needle assembly 220 is restricted, which facilitates the smooth hanging of the mother bag C. During the movement of the moving plate 310 in front of the initial position A, the hanging needle assembly 220 remains in a stable position. During the movement of the moving plate 310 from the rear end to the initial position A, the follower 232 can abut against the first inclined surface 211 to push the rearward-moving hanging needle forward back to the origin position B.

[0055] For example, the upper end of the follower 232 may be provided with a second inclined surface 2321, which is parallel to the first inclined surface 211, thus forming a structure that fits against the first inclined surface 211. During the first stroke 232a, the second inclined surface 2321 contacts the first inclined surface 211, maintaining a close contact. Thus, through the interaction of the parallel inclined surfaces, the follower 232 has a stable forward component force on the contact of the connector 210, improving the positional stability of the pin assembly 220. Optionally, the upper end of the follower 232 can also be set into other suitable structural shapes. For example, the upper end of the follower 232 can also be set into a convex arc surface. When the arc surface contacts the first inclined surface 211, it forms a point contact, which can reduce frictional resistance and is suitable for situations where frictional interference needs to be reduced. The upper structure of the follower 232 can be flexibly adjusted according to specific installation requirements, contact requirements, or processing conditions to meet the needs of different scenarios.

[0056] refer to Figures 2 to 6 , Figure 2The diagram illustrates the state where the guide member 231 has been moved a certain distance away from one side of the follower member to demonstrate the structure of the follower member 232. In some embodiments, the follower member 232 has a guide portion 2322 on the side facing the guide member 231, which can slide or roll along the first guide groove 2311 and the second guide groove 2312. The shape and size design of the guide portion 2322 can ensure matching with the first guide groove 2311 and the second guide groove 2312 to guarantee smooth movement of the follower member 232 in both strokes.

[0057] For example, the guide portion 2322 can be designed as a boss protruding from the follower 232 toward the guide 231, fitting against the inner wall of the guide groove (i.e., the first guide groove 2311 and the second guide groove 2312). The boss can be cylindrical, elliptical cylindrical, or prismatic. Alternatively, the guide portion 2322 can also be designed as a roller that fits into the inner wall of the guide groove. Correspondingly, the follower 232 is provided with a connecting shaft for mounting the roller. The roller rolls in the first guide groove 2311 and the second guide groove 2312, which can reduce frictional resistance, ensure that the follower 232 moves flexibly, and reduce jamming.

[0058] refer to Figures 2 to 6 In some embodiments, the follower 232 has a sliding portion 2323 on the side opposite to the guide 231. The sliding portion 2323 extends in the vertical direction, and the follower 232 can move in the vertical direction relative to the guide 231 through the sliding portion 2323 when driven. Therefore, when the follower 232 moves forward in the first stroke 232a, the top of the follower 232 abuts against the first inclined surface 211, and the first inclined surface 211 exerts a downward reaction force on the follower 232. This reaction force causes the follower 232 to move forward along the first inclined surface 211 while moving downward relative to the guide 231 through the sliding part 2323, thereby ensuring stable contact with the first inclined surface 211. During the process of the follower 232 moving backward in the first stroke 232a, the first guide groove 2311 exerts an upward supporting force on the follower 232, causing the follower 232 to move backward along the first inclined surface 211 while moving upward relative to the guide 231 through the sliding part 2323, ensuring continuous and stable contact with the first inclined surface 211.

[0059] The sliding part 2323 may include a matching slider and slide rail structure, one of which is connected to the follower 232, and the other is adapted to be connected to the extrusion drive assembly 320 for driving the moving plate 310 to move. The slide rail has a track extending in the vertical direction. The slider is closely matched with the slide rail to ensure smooth movement of the sliding part 2323 in the vertical direction. The extrusion drive assembly 320 drives the moving plate 310 and the sliding part 2323 to move in the first direction so that the follower 232 moves together with the moving plate 310.

[0060] Follower 232 moves backward into second stroke 232b in the first stroke 232a and disengages from the first inclined surface 211. Then it continues to move backward until it abuts against the abutment part 212 and moves the abutment part 212 backward together, so that the connector 210 and the hanging pin assembly 220 move backward smoothly. In the second stroke 232b, follower 232 moves along the second guide groove 2312. The second guide groove 2312 limits the movement trajectory of follower 232 to move along the first direction, so that it will not move up and down due to the sliding part 2323, ensuring that follower 232 moves smoothly in the second stroke 232b.

[0061] refer to Figures 3 to 5 In some embodiments, the first inclined surface 211 of the connector 210 is located within the range of the second stroke 232b, that is, the first inclined surface 211 is located above the second guide groove 2312. Alternatively, as the follower 232 moves backward in the second stroke 232b, causing the abutment portion 212 to move backward, it moves a portion of the first inclined surface 211 above the second guide groove 2312. Therefore, after the follower 232 moves forward a certain distance at the rear end of the second stroke 232b, it can re-abut against the first inclined surface 211, thereby pushing the connector 210 and the pin assembly 220 to move smoothly forward in the first direction until they are fully reset. During this reset process, the connector 210 and the pin assembly 220 remain stable.

[0062] Furthermore, during the process of the follower 232 re-applying to the first inclined surface 211 and pushing the connector 210 and the hanging pin assembly 220 to reset, the reaction force of the first inclined surface 211 on the follower 232 and the movement trajectory of the follower 232 in the second guide groove 2312 work together to enable the follower 232 to move and reset smoothly and accurately along the predetermined path.

[0063] refer to Figure 3 and Figure 4 In some embodiments, the abutment portion 212 includes a downwardly extending first abutment surface 2121, the lower end of the first abutment surface 2121 being lower than the upper end of the first inclined surface 211. When the follower 232 moves backward in the second stroke 232b and abuts against the first abutment surface 2121, the first abutment surface 2121 can provide stable support when pushing the connector 210 and the hanging pin assembly 220 backward.

[0064] refer to Figure 5In some embodiments, the mounting mechanism 200 is designed with ease of use and flexibility in mind. For example, the abutment portion 212 may include an extension portion 2122 and a fine-tuning member 2123. The extension portion 2122 extends downward, and the fine-tuning member 2123 is connected to the extension portion 2122. The position of the front end of the fine-tuning member 2123 relative to the extension portion 2122 along a first direction is adjustable. The lower side of the fine-tuning member 2123 is lower than the upper end of the first inclined surface 211. The follower member 232 abuts against the front end of the fine-tuning member 2123 in the second stroke 232b. The position adjustment of the fine-tuning member 2123 can be achieved through a threaded connection or a sliding fit, ensuring a stable connection between the fine-tuning member 2123 and the extension portion 2122 and flexible adjustment, enabling rapid adjustment. By adjusting the position of the fine-tuning member 2123, precise control can be achieved over the abutment position of the follower member 232 against the fine-tuning member 2123 of the abutment portion 212 when it moves backward in the second stroke 232b. For example:

[0065] In the first example, the front end of the fine-tuning member 2123 is flush with the front side of the extension 2122. When the follower 232 is at the origin position B, the distance between the front end of the follower 232 and the fine-tuning member 2123 is D1. The follower 232 moves backward D1 from the origin position B to abut the front end of the fine-tuning member 2123, thereby driving the connector 210 and the pin assembly 220 to move backward. When the follower 232 moves backward to the rear end of the second stroke 232b (such as the rear end of the second guide groove 2312), the position of the extension 2122 at this time is defined as d1. The follower 232 moves forward from the rear end of the second stroke 232b to the origin position B, which can reset the connector 210 and the pin assembly 220.

[0066] In the second example, the fine-tuning member 2123 is adjusted forward so that the front end of the fine-tuning member 2123 protrudes forward by an extension 2122. The protrusion distance can be defined as H1. When the follower 232 is at the origin position B, the distance between the front end of the follower 232 and the fine-tuning member 2123 is D2. Compared with the first example, D2 + H1 = D1. That is, D2 is less than D1 in the first example. The follower 232 can move backward by D2 from the origin position B to abut the front end of the fine-tuning member 2123 and drive the connector 210 and the hanging pin assembly 220 to move backward. Therefore, compared with the previous example, the follower 232 can abut the fine-tuning member 2123 earlier and drive the connector 210 and the hanging pin assembly 220 to move backward. After the follower 232 abuts against the front end of the fine-tuning member 2123, in one case, the follower 232 moves backward to the rear end of the second stroke 232b (such as the rear end of the second guide groove 2312). The position of the extension 2122 at this time is defined as d2. It can be understood that at this time, the extension 2122 is located behind the front end of the fine-tuning member 2123. The distance between the extension 2122 and the follower 232 is equal to the forward protrusion distance H1 of the front end of the fine-tuning member 2123. That is to say, compared with the first example mentioned above, the extension 2122 can move backward a greater distance. Therefore, the connector 210 and the pin assembly 220 can retract a greater distance. The follower 232 moves forward from the rear end of the second stroke 232b to the origin position B, which can reset the connector 210 and the pin assembly 220. In another scenario, when the follower 232 moves backward, causing the connector 210 and the pin assembly 220 to retract by a distance equal to the retraction distance in the first example, the extension 2122 can retract to position d1. In other words, the follower 232 does not need to move to the rear end of the second stroke 232b to retract the connector 210 and the pin assembly 220 to position d1 in the first example, thus shortening the retraction distance of the follower 232. At this point, the follower 232 moves forward from its current position to the origin position B. This allows the connector 210 and the pin assembly 220 to reset, and the reset distance is also shorter. Therefore, in the second example, compared to the first example, the follower 232 needs to move a shorter distance from the origin position B, so that the pin assembly 220 can start to move backward faster. Similarly, the follower 232 needs to move a shorter distance forward to reset the pin assembly 220, so that the pin assembly 220 can reset faster, effectively improving the speed of the pin assembly 220's retraction and reset.

[0067] Therefore, by adjusting the position of the fine-tuning component 2123, the backward distance and reset speed of the connector 210 and the hanging pin assembly 220 can be adjusted to meet the needs of different working conditions, providing operators with more operational options and convenience.

[0068] refer to Figures 3 to 5In some embodiments, the connector 210 may also be provided with a second abutment surface 213, which extends along a first direction and faces downward. The second abutment surface 213 connects the upper end of the first inclined surface 211 and the abutment portion 212. The upper end of the follower 232 abuts against the second abutment surface 213 during the second stroke 232b. The upper end of the follower 232 contacts the second abutment surface 213 to form a stable support and prevent it from swaying up and down during the second stroke 232b.

[0069] refer to Figure 1 and Figure 3 In some embodiments, the linkage component 230 further includes a position detector 233 connected to the guide 231, used to detect the origin position B of the follower 232. When the follower 232 is at the origin position B, the follower 232 is located at the rear end of the first stroke 232a and abuts against the first inclined surface 211. At this time, the position detector 233 is in the first detection state and sends a signal. The controller confirms the position of the follower 232 according to the signal, that is, ensures that the first inclined surface 211 of the connector 210 is in the abutted state and the pin assembly 220 is in the predetermined initial position A.

[0070] For details, please refer to Figure 1 and Figure 3 The position detector 233 can be a photoelectric sensor in conjunction with the light baffle 234. The light baffle 234 can be connected to the extrusion drive assembly 320 for driving the moving plate 310 and the follower 232 to move. The light baffle 234 is provided with a set length along the first direction so that when the follower 232 is at the origin position B, the light baffle 234 keeps blocking the photoelectric sensor and is in the first detection state. When the follower 232 moves away from the origin position B, the position detector 233 switches to the second detection state and sends a signal. The controller confirms that the follower 232 has left the origin position B and is located behind the origin position B, that is, ensures that the first inclined surface 211 of the connector 210 is in a non-aggressive state. When the follower 232 moves forward from the rear of the origin position B to return to the origin position B, the position detector 233 switches from the second detection state to the first detection state and sends a signal. The controller confirms that the follower 232 has returned to the origin position B based on the signal, thus ensuring that the first inclined surface 211 of the connector 210 is in a contact state and the moving plate 310 is in the predetermined initial position A. When the follower 232 moves forward away from the origin position B, the position detector 233 maintains the first detection state, and the controller confirms that the first inclined surface 211 of the connector 210 is in a contact state based on the position detector 233.

[0071] refer to Figures 1 to 3This application also provides a blood component separator, including a main body 100, a squeezing mechanism 300 and a mounting mechanism 200 as described in the foregoing embodiments of this application.

[0072] The connecting member 210 of the mounting mechanism 200 is movably connected to the main body 100 along the first direction, and the guide member 231 is fixedly connected to the main body 100. The extrusion mechanism 300 includes a moving plate 310 and an extrusion drive assembly 320. The moving plate 310 is located on the outside of the main body 100. The follower member 232 is movably connected to the extrusion drive assembly 320 along the vertical direction. The extrusion drive assembly 320 is connected to the main body 100 and the moving plate 310, and is used to drive the moving plate 310 to move back and forth along the first direction from the initial position A, while driving the follower member 232 to move along the first stroke 232a and the second stroke 232b.

[0073] The extrusion drive assembly 320 may include a motor 321, a timing belt mechanism 322, a drive shaft 323, and a drive member 324. The motor 321 drives the drive shaft 323 to rotate through the timing belt mechanism 322, thereby driving the drive member 324 to move. The drive shaft 323 and the drive member 324 can be connected by threads to form a screw drive structure. The moving plate 310 and the follower 232 are connected to the drive member 324 and thus move under drive.

[0074] When the moving plate 310 is in the initial position A, the upper end of the follower 232 abuts against the first inclined surface 211. As the moving plate 310 moves in front of the initial position A, the follower 232 moves along the first stroke 232a; as the moving plate 310 moves behind the initial position A, the follower 232 moves along the second stroke 232b. Thus, the mounting mechanism 200, through the connection between the follower 232 and the extrusion drive assembly 320, enables the follower 232 to move synchronously with the moving plate 310, achieving linkage between the state of the pin mounting assembly 220 and the movement of the moving plate 310.

[0075] refer to Figure 3 and Figure 8 The blood component separator also has a first fixed plate 330 between the moving plate 310 and the main body 100. The hanging needle assembly 220 is located above the first fixed plate 330, so a mother bag C can be hung between the rear side of the moving plate 310 and the first fixed plate 330. The moving plate 310 can move backward from the initial position A to squeeze the mother bag C at that position, thereby separating the layered blood components in the mother bag C. During this process, the separation effect can be ensured by detecting the layering of blood components through the sensor 500.

[0076] refer to Figure 3 and Figure 8In some embodiments of the blood component separator, multiple sensors 500 are vertically spaced on the first fixed plate 330, with the detection ends of the sensors 500 facing the moving plate 310. The sensors 500 are used to detect the layering of blood components in the mother bag C attached to the needle assembly 220. Thus, by precisely controlling the displacement of the moving plate 310 and the real-time monitoring of the sensors 500, the separation process is more efficient and accurate. While the moving plate 310 moves backward from its initial position A to compress the mother bag C, the follower 232 moves backward in the second stroke 232b, pushing the connector 210 and the needle assembly 220 backward. This ensures that the mother bag C and the needle assembly 220 adaptively move backward as the compression proceeds, resulting in uniform force during separation. Furthermore, it keeps the rear side of the mother bag C in contact with the first fixed plate 330 and the sensors 500, ensuring that the sensors 500 accurately detect the layering of blood components, thereby ensuring the continuity and accuracy of the separation process.

[0077] After centrifugation and suspension, the blood in the mother bag C separates into different layers, each with a different color. The location of these layers can be detected using a color sensor or a photoelectric sensor. For example, a color sensor, also known as a color recognition sensor, detects the color of blood components through photoelectric conversion and compares it to a preset reference value to determine the layer location. A photoelectric sensor, on the other hand, utilizes the different light transmittance of different colored blood components to detect the reflected light value, thereby determining the layer location. Taking the mother bag C as an example, which consists of two layers, the upper layer is squeezed out from the connecting tube at the top of the mother bag C during the squeezing process. As the squeezing continues, the internal volume of the mother bag C is compressed, so the separation layers of the lower and upper layers gradually move upward. As a result, some of the multiple sensors 500 arranged at intervals along the vertical direction can be detected. When the separation layers are moved to the position of the sensor 500 corresponding to the top of the inner cavity of the mother bag C or slightly below the top, it can be confirmed that the upper layer has been basically separated. Then the movement of the moving plate 310 can be stopped to stop the squeezing, avoid mixing in the lower layer, and ensure the separation effect. Alternatively, a connecting tube can be connected to the bottom of the mother bag C to draw out the lower layer components during the extrusion process. As the extrusion proceeds, the internal volume of the mother bag C is compressed, and the separation layers of the lower and upper components gradually move downwards. As a result, some of these layers can be detected by multiple sensors 500 spaced apart in the vertical direction. When the separation layers are detected by a sensor 500 located at or slightly above the bottom of the inner cavity of the mother bag C, it can be confirmed that the lower layer components have been basically separated. At this point, the movement of the moving plate 310 can be stopped to stop the extrusion, thus preventing the upper layer components from mixing in and ensuring the separation effect.

[0078] By precisely controlling the displacement of the moving plate 310 and the real-time monitoring of the sensors 500, the separation process is more efficient and accurate. The sensors 500 are spaced vertically to ensure that the movement of the layers is detected in a timely manner, preventing the mixing of lower layer components.

[0079] In some embodiments, the squeezing mechanism 300 further includes a first fixing plate 330 and a second fixing plate 340 disposed opposite to each other on both sides of the movable plate 310 along a first direction. The first fixing plate 330 is located on the rear side of the movable plate 310, and the second fixing plate 340 is located on the front side of the movable plate 310. Both the first fixing plate 330 and the second fixing plate 340 are connected to the main body 100. The hanging needle assembly 220 is located above the first fixing plate 330 and is used to hang the mother bag C after blood centrifugation on the front side of the first fixing plate 330 and to hang the daughter bag on the rear side of the second fixing plate 340. The movable plate 310 can move forward from the initial position A to move toward the daughter bag to squeeze the daughter bag, and the movable plate 310 can move backward from the initial position A to move toward the mother bag C to squeeze the mother bag C, ensuring that blood components are separated as needed. Reference Figure 3 When the moving plate 310 is in the initial position A, the moving plate 310 and the second fixed plate 340 have a first distance L1, and the moving plate 310 and the first fixed plate 330 have a second distance L2. The first stroke 232a of the follower 232 has a length L3 along the first direction that is not less than the first distance L1, and the second stroke 232b has a length L4 along the first direction that is not less than the second distance L2. This ensures that the stroke of the follower 232 can cover the entire stroke of the moving plate 310, and ensures that when the mother bag C or the daughter bag is squeezed, the follower 232 moves synchronously with the moving plate 310 during the squeezing process of the mother bag C or the daughter bag.

[0080] The length L3 of the first stroke 232a of the follower 232 along the first direction is understood as the length of the movable path of the follower 232 along the first direction in the first stroke 232a. For example, if the follower 232 moves along an oblique path intersecting the first direction in the first stroke 232a, the length of the oblique path along the first direction within its movable range is L3. The length L4 of the second stroke 232b of the follower 232 along the first direction is understood as the length of the movable path of the follower 232 along the first direction in the second stroke 232b. If the follower 232 moves along a path parallel to the first direction in the second stroke 232b, the length of the straight path along the first direction within its movable range is L3. In some embodiments, when the follower 232 is at the origin position B, the distance between the front end of the guide portion 2322 and the front end of the first guide groove 2311 along the first direction is the length L3 of the first stroke 232a along the first direction, and the distance between the rear end of the guide portion 2322 and the rear end of the second guide groove 2312 along the first direction is the length L4 of the second stroke 232b along the first direction.

[0081] refer to Figures 3 to 5 The mounting mechanism 200 of this application embodiment realizes adaptive switching between the contact state and position adjustment of the needle assembly 220. Applied to a blood component separator, it significantly improves separation efficiency and operational stability. In some embodiments of the blood component separator, the mounting mechanism 200 of this application embodiment suspends the mother bag C behind the moving plate 310. The mounting mechanism 200 can be linked with the moving plate 310 via the follower 232. The moving plate 310 moves back and forth from its initial position A under the drive of the compression drive assembly 320. The moving plate 310 moves forward to compress the blood bag (e.g., the daughter bag) located in front of the moving plate 310, and moves backward to compress the mother bag C located behind the moving plate 310. The mounting mechanism 200 can be connected to the compression drive assembly 320 via the follower 232, thereby linking with the moving plate 310. The compression drive assembly 320 controls the displacement of the moving plate 310 through preset stroke parameters, thereby synchronously adjusting the position of the follower 232, and thus adjusting the state and position of the needle assembly 220, for example:

[0082] When the moving plate 310 is in the initial position A, the hanging pin assembly 220 is located at the origin position B. At this time, the follower 232 abuts against the first inclined surface 211 of the connector 210, so that the hanging pin assembly 220 maintains a stable position and cannot move backward, which facilitates hanging the mother bag C.

[0083] During the process of the moving plate 310 squeezing the front blood bag forward and returning to the initial position A after squeezing, the follower 232 remains in the first stroke 232a, thus maintaining contact with the first inclined surface 211, and the needle hanging assembly 220 maintains a stable position, so that the mother bag C suspended on the needle hanging assembly 220 maintains a stable position.

[0084] During the process of the moving plate 310 pressing the mother bag C (located behind the moving plate 310) suspended on the needle assembly 220 from the initial position A backward, the follower 232 moves in the second stroke 232b and abuts against the abutting part 212 of the connector 210 at a set position (e.g., when the moving plate 310 starts to move backward or after moving backward a certain distance, which can be set according to the program settings) and drives the connector 210 to move backward, so that the needle assembly 220 adaptively retracts, thereby ensuring that the mother bag C remains close to the abutting surface located behind the mother bag C during the pressing process. The abutting surface is equipped with a sensor for detecting the remaining blood components in the mother bag C. Keeping the mother bag C close to the abutting surface during the pressing process can effectively improve the accuracy of detection, thereby ensuring the separation effect.

[0085] After the moving plate 310 completes the compression of the mother bag C and moves forward to the initial position A, the follower 232 moves forward and abuts against the first inclined surface 211, driving the connector 210 and the hanging needle assembly 220 to move forward back to the original position B. At this time, the follower 232 remains abutting against the first inclined surface 211 to ensure that the hanging needle assembly 220 is in a stable position, which facilitates the removal of the mother bag C or other operations such as weighing.

[0086] Therefore, the mounting mechanism 200 of this application embodiment can not only be used to suspend the mother bag C in the blood component separator, but also can be linked with the moving plate 310 of the blood component separator through the follower 232, and the cooperation between the follower 232 and the connector 210, so that the moving plate 310 can realize the stable mounting and adaptive position adjustment of the hanging needle assembly 220 connected to the connector 210 when performing different operations, effectively improving the efficiency and accuracy of blood component separation.

[0087] refer to Figure 7 In some embodiments, the connector 210 is movably disposed on the main body 100 of the blood component separator along a first direction. The connector 210 can be connected to the main body 100 via a sliding assembly 400. The sliding assembly 400 extends along the first direction so that the connector 210 can move stably along the first direction under the guidance of the sliding assembly 400. The sliding assembly 400 may be a sliding rail and slider cooperation structure. The sliding rail extends along the first direction, and the slider is connected to the connector 210 and slidably cooperates with the sliding rail, thereby realizing the stable movement of the connector 210 along the first direction and ensuring that the connector 210 does not deviate or shake during the movement along the first direction.

[0088] In some embodiments, to further improve the versatility and adaptability of the mounting mechanism 200, the connector 210 is also provided with a mounting part for connecting different hanging pin assemblies 220, so as to adapt to different models or specifications of mother bags C. The mounting part can use a standard interface or connection structure, such as a threaded interface, a snap-fit ​​structure, etc., so as to facilitate the connection of different hanging pin assemblies 220. The hanging pin assembly 220 can be quickly replaced to meet diverse needs.

[0089] The blood component separator employs the aforementioned mounting mechanism 200 and compression mechanism 300, effectively addressing the problem of the hanging needle's effect affecting the weighing of the mother bag C. For instance, in related technologies, the hanging needle of some mounting mechanisms 200 is connected to a weighing sensor. The weight of the separated blood components is confirmed by measuring the weight change of the mother bag C before and after compression. However, when the moving plate 310 compresses the mother bag C backward, the bag is gradually compressed, often resulting in misaligned compression or the mother bag C being pulled at the hanging needle's position, generating a longitudinal force. This force not only affects the structural stability and rebound effect of the hanging needle but also the accuracy of weighing, and may even cause overload damage to the weighing sensor, thus affecting detection accuracy and separation effect.

[0090] In contrast, in some embodiments of this application, the mounting mechanism 200 may further include a weighing module connected to the connector 210, and the hanging needle assembly 220 connected to the weighing module. The weighing module measures the weight of the mother bag C suspended on the hanging needle assembly 220 via a weighing sensor. The weighing module is connected to the data transmission system of the main body 100, thereby assisting in verifying the separation effect and ensuring data accuracy. In use, the weight of the mother bag C before and after compression separation while suspended on the hanging needle assembly 220 can be obtained, and the weight of the separated blood components can be determined based on the weight difference. As the moving plate 310 pushes the mother bag C backward, it drives the follower 232 to push the connector 210 backward, thereby causing the weighing module and the hanging needle assembly 220 to move together with the connector 210. This avoids misaligned compression and longitudinal pulling. After the compression is completed, the moving plate 310 moves forward to the initial position A, driving the follower 232 to push the first inclined surface 211 forward, causing the connector 210 to move forward. This causes the hanging needle assembly 220 and the weighing module to return to their original positions, and the mother bag C returns to its initial suspended state. The weighing sensor is not disturbed, thus enabling accurate weighing, which helps improve data accuracy and optimize the separation effect.

[0091] In some embodiments, the blood component separator may further include a controller, which is communicatively connected to the extrusion drive assembly 320, the position detector 233, and the blood segmentation sensor 500. The controller controls the driving state of the extrusion drive assembly 320 based on the detection signals from the sensor 500 and the position detector 233, thereby monitoring and adjusting the extrusion process and confirming the adaptive contact or movement state of the needle attachment assembly 220. The controller may be implemented using a microcontroller, PLC, or other similar controller, and achieves precise control of the extrusion drive assembly 320 through preset program logic, ensuring that the needle attachment assembly 220 can accurately and stably fulfill various action requirements.

[0092] The mounting mechanism 200 and the blood component separator including such a mounting mechanism 200 in this application embodiment can effectively solve many problems caused by improper needle position or movement in related technologies. For example, the needle position is unstable during the suspension operation of the mother bag C, making it difficult to suspend it properly; the needle position is unreasonable during the squeezing process of the mother bag C, causing the mother bag C to fail to adhere tightly to the sensor 500, and the measurement parameters are prone to deviation. It not only improves the stability and measurement accuracy of the mother bag C squeezing process, but also further optimizes the overall efficiency of blood component separation.

[0093] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A mounting mechanism, used in a blood component separator, characterized in that, The mounting mechanism includes: A connector, wherein a first inclined surface is provided on one side of the connector, the first inclined surface is inclined forward and downward along a first direction, and an abutment portion is provided on the rear side of the first inclined surface; A needle-hanging assembly, connected to the connector and extending forward in a first direction, is used to hang a blood bag; The linkage component includes a guide and a follower. The guide is disposed on the side of the connector with the first inclined surface. The follower is movably disposed between the guide and the connector. The follower is driven to move and has a first stroke and a second stroke. The first stroke is located in front of the second stroke. During the first stroke, the follower abuts against the first inclined surface and slides along the first inclined surface to limit the front and rear position of the connector. When the follower moves backward at a set position during the second stroke, it abuts against the abutting part to drive the connector to move backward.

2. The mounting mechanism according to claim 1, characterized in that, The guide member is provided with a first guide groove and a second guide groove. The first guide groove is in the same direction as the inclination of the first inclined surface. The second guide groove is connected to the first guide groove and extends backward along the first direction. The follower moves along the first guide groove during the first stroke and moves along the second guide groove during the second stroke.

3. The mounting mechanism according to claim 2, characterized in that, The upper end of the follower is provided with a second inclined surface, which is parallel to the first inclined surface, and during the first stroke, the second inclined surface contacts the first inclined surface.

4. The mounting mechanism according to claim 2, characterized in that, The follower is provided with a guide portion on the side facing the guide member, and the guide portion can slide or roll along the first guide groove and the second guide groove; And / or, the follower has a sliding part on the side opposite to the guide, the sliding part extends in the vertical direction, and the follower can be driven to move in the vertical direction relative to the guide through the sliding part.

5. The mounting mechanism according to claim 1, characterized in that, The linkage component further includes a position detector connected to the guide member, used to detect the origin position of the follower member. When the follower member is at the origin position, the follower member is located at the rear end of the first stroke and abuts against the first inclined surface.

6. The mounting mechanism according to claim 1, characterized in that, The abutting portion includes a downwardly extending first abutting surface, the lower end of which is lower than the upper end of the first inclined surface, and the follower abuts against the first abutting surface in the second stroke. Alternatively, the abutting portion includes an extension portion and a fine-tuning member. The extension portion extends downward, and the fine-tuning member is connected to the extension portion. The position of the front end of the fine-tuning member relative to the extension portion along the first direction is adjustable. The lower side of the fine-tuning member is lower than the upper end of the first inclined surface. The follower abuts against the front end of the fine-tuning member in the second stroke.

7. The mounting mechanism according to claim 1, characterized in that, The connector is further provided with a second abutting surface, which extends along the first direction and faces downward. The second abutting surface is connected between the upper end of the first inclined surface and the abutting portion. The upper end of the follower abuts against the second abutting surface during the second stroke.

8. A blood component separator, characterized in that, include: Main body; The mounting mechanism as described in any one of claims 1 to 7, wherein the connector is movably connected to the main body along the first direction, and the guide is fixedly connected to the main body; The extrusion mechanism includes a movable plate and an extrusion drive assembly. The movable plate is located on the outside of the main body. The follower is movably connected to the extrusion drive assembly in the vertical direction. The extrusion drive assembly is connected to the main body and the movable plate and is used to drive the movable plate to move back and forth in the first direction from the initial position, while driving the follower to move in the first stroke and the second stroke. When the moving plate is in the initial position, the upper end of the follower abuts against the first inclined surface; While the moving plate moves in front of the initial position, the follower moves along the first stroke; while the moving plate moves behind the initial position, the follower moves along the second stroke.

9. The blood component separator according to claim 8, characterized in that, The extrusion mechanism further includes a first fixed plate and a second fixed plate disposed opposite to each other on both sides of the movable plate along the first direction. Both the first fixed plate and the second fixed plate are connected to the host, and the hanging pin assembly is located above the first fixed plate. When the movable plate is in the initial position, the movable plate has a first distance from the second fixed plate, and the movable plate has a second distance from the first fixed plate; The length of the first travel along the first direction is not less than the first spacing, and the length of the second travel along the first direction is not less than the second spacing.

10. The blood component separator according to claim 9, characterized in that, The blood component separator also includes at least one sensor, and a plurality of the sensors are arranged vertically at intervals on the first fixed plate; the detection end of the sensor faces the moving plate, and the sensor is used to detect the layering of blood components in the blood bag attached to the needle assembly.

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