Pre-assembly component for PRP (platelet rich plasma) extraction

Abstract

The utility model discloses a preassembly component for PRP extraction. The preassembly component comprises an assembly base station, a supporting frame, an assembly frame and a separation component, the assembling base table comprises an assembling base and an assembling rack, and a receding opening is formed in the assembling table face of the assembling rack. The supporting frame assembling frame comprises a supporting seat and a test tube assembling assembly which are in sliding insertion connection with the assembling table top, and the test tube assembling assembly comprises a sample test tube mounting part and two extraction test tube mounting parts located on the two sides; the separation assembly comprises a sample needle tube, an extraction needle tube and a connecting pipe fitting, the sample needle tube is connected with the sample test tube mounting part in an inserted mode, the sample needle tube serves as a centrifugal carrier and is provided with two centrifugal working positions with the tip facing upwards and the tip facing downwards, and the sample needle tube is provided with two extraction working positions located in the receding opening and above the assembly table top correspondingly; and the tip of the sample needle tube is selectively communicated with the tips of the two extraction needle tubes through the connecting pipe fitting. The PRP extraction device solves the technical problem of low assembly efficiency in traditional PRP extraction.

Description

Technical Field

[0001] This utility model relates to the field of medical device auxiliary device technology, and more specifically to a pre-assembled component for PRP extraction. Background Technology

[0002] In the field of PRP (platelet-rich plasma) extraction technology, the centrifugation and extraction of target components from blood samples are the core operational procedures. Under current technology, this process typically relies on dispersed components such as centrifuge tubes, extraction needles, and simple support platforms, and a unified, integrated operational system has not yet been formed. Specifically, existing solutions mostly use separate centrifuge tubes to carry blood samples for centrifugation. After the blood forms a layered structure due to density differences—an anemic platelet-rich plasma layer, a middle white membrane layer, and a bottom layer of red blood cells—the target layer is then extracted using a separate extraction needle. Regarding the support structure, most are basic scaffolds or lack dedicated support, only providing a single function of fixing the centrifuge tubes or needles, and cannot adjust the position and angle according to the operational stage.

[0003] The existing technology has significant shortcomings. First, the centrifugation and extraction processes are disconnected. The centrifuge tubes and extraction needles are independent of each other. After centrifugation, the sample must be manually transferred to the extraction area or the needle position adjusted to fit the centrifuge tube. This process not only increases the number of steps and time costs, but may also expose the sample to the external environment, increasing the risk of contamination. At the same time, the vibration during the transfer or adjustment process can easily disrupt the stable stratification of the blood, causing the target component to mix with other components, directly affecting the purity of PRP extraction.

[0004] Secondly, the components suffer from low positioning accuracy and poor assembly efficiency. The existing support structure lacks a dedicated positioning design for centrifuge tubes and extraction needles. Operators need to manually calibrate the docking position of the needles and centrifuge tubes, which is not only time-consuming and labor-intensive, but also prone to sample loss due to improper needle insertion angle caused by positioning deviation. In addition, each component needs to be assembled one by one on-site, without the basis for pre-assembly, which further prolongs the operation preparation time and reduces the overall operation efficiency.

[0005] Finally, there is a weakness in adaptability and automation integration. Most existing extraction needles are designed with a fixed orientation, which cannot adjust the extraction direction according to the different directions of blood stratification during centrifugation (due to changes in the vertical distribution of stratification caused by differences in centrifugation position). They can only be adapted to a single centrifugation method, limiting their applicability. Furthermore, since there is no unified installation standard and integrated structure for each component, additional structural debugging and position calibration are required when connecting to automated extraction equipment, making rapid integration difficult. This results in low efficiency of automated operations and cannot meet the needs of large-scale, high-efficiency PRP extraction.

[0006] Therefore, how to provide a new pre-assembled component for PRP extraction that can improve component positioning accuracy and assembly efficiency through pre-assembly design, while also adapting to different centrifugal stratification directions to meet the needs of automated extraction operations, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] In view of this, the present invention provides a pre-assembled component for PRP extraction, which aims to solve the technical problems of low positioning accuracy and poor assembly efficiency of the above-mentioned components, as well as insufficient adaptability and difficulty in connecting with automated extraction operations.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A pre-assembled component for PRP extraction, comprising:

[0010] An assembly base includes an assembly base and an assembly frame fixed on the assembly base. The assembly frame has an assembly table surface, which is spaced apart from the bottom of the assembly base. A clearance opening is provided on the assembly table surface.

[0011] An assembly rack includes a support base and a test tube assembly assembly. The support base is slidably inserted into the assembly table surface. The test tube assembly assembly is fixedly connected to the support base and includes a sample test tube mounting part arranged corresponding to the clearance port and two extraction test tube mounting parts located on both sides of the sample test tube mounting part.

[0012] The separation assembly includes a sample needle and an extraction needle. The sample needle is inserted into the sample tube mounting part. As a centrifugal carrier, the sample needle has two centrifugation working positions during centrifugation: one with the tip facing up and the other with the tip facing down. The sample needle has two working positions, one with the tip facing up and the other with the tip facing down, located inside the clearance port and above the assembly table, respectively, and arranged corresponding to its two centrifugation working positions. There are two extraction needles, which are arranged and inserted into the two extraction tube mounting parts, respectively. The tip of the sample needle is selectively connected to the tip of the two extraction needles through a connecting fitting.

[0013] Therefore, the beneficial effects of this utility model are concentrated in the synergistic realization of three aspects: adapting to centrifugation stratification requirements, supporting pre-assembly, and facilitating automated operation. On the one hand, the sample needle is both a centrifugation carrier and has two centrifugation working positions: tip-up and tip-down. Different centrifugation positions will cause blood to stratify in different directions (e.g., when centrifuged with the tip up, blood components may show vertical stratification with lighter components at the top and heavier components at the bottom, while the stratification direction is adapted accordingly when centrifuged with the tip down). The sample needle also has two extraction working positions, one located inside the relief port and the other above the assembly table, corresponding to the two centrifugation working positions. Without transferring samples or changing needles, the corresponding working position can be switched according to the direction of blood stratification after centrifugation, accurately adapting to the extraction requirements under different centrifugation stratification states. This design avoids the layering disorder and extraction deviation problems caused by the separation of centrifuge tubes and extraction devices in traditional methods. On the other hand, the core components of the assembly can be pre-assembled on the assembly stand. The support base of the assembly stand is inserted and fixed to the assembly table. The sample tube installation part (corresponding to the clearance port) and extraction tube installation part of the test tube assembly component are precisely installed with sample needles and extraction needles respectively. The connecting tubes are also pre-tested to selectively connect with the needles, quickly forming a complete extraction module with precise positioning. This pre-assembly design allows the component to complete structural integration and pathway debugging before it is put into use. When connecting to automated extraction operations, there is no need for on-site assembly or adjustment. Continuous extraction can be achieved directly, effectively improving the accuracy of PRP extraction, assembly efficiency and automation adaptability.

[0014] Preferably, the test tube assembly includes connector one, connector two, and connector three. Connector one, connector two, and connector three are all fixedly connected to the support base. Connector one has a mounting hole one. Connector two and connector three are located on both sides of connector one and have mounting holes two and three respectively. Mounting hole one is the sample test tube mounting part, and mounting holes two and three are the extraction test tube mounting parts.

[0015] Preferably, the assembly frame also includes support members, and multiple support members are fixedly connected to the support base and are respectively arranged corresponding to mounting hole one, mounting hole two and mounting hole three.

[0016] Preferably, the connecting fitting includes multiple three-way valves. Each three-way valve has a mating end that connects to the tip of the needle tube, and stud ends and nut ends located on both sides of the mating end. The threads of the nut ends and stud ends are arranged accordingly. The mating end is selectively connected to the stud ends and nut ends. The bottom ends of both the sample needle tube and the extraction needle tube are connected to three-way valves. The three-way valves corresponding to the sample needle tube and the three-way valves corresponding to the two extraction needle tubes are selectively connected through three-way valves. Multiple support members support the three-way valves corresponding to the sample needle tube and the two extraction needle tubes, respectively.

[0017] Preferably, the tip of the sample needle faces downward, the support base includes a base plate and a vertical plate, the base plate is inserted into the assembly table, the vertical plate is fixedly connected to the side wall of the base plate, connector one, connector two and connector three are all fixedly connected to the plate surface of the vertical plate, and the support member is fastened to the upper plate surface of the base plate.

[0018] Preferably, the tip of the sample needle faces upward, and the support base includes a base plate and a vertical plate. The base plate is inserted into the assembly table surface. A U-shaped opening is provided on the base plate, corresponding to the clearance opening. The vertical plate is fixedly connected to the side wall of the base plate. Connector one is fixedly connected to the side wall of the U-shaped opening. Connector two and connector three are located on both sides of connector one and are fixedly connected to the plate surface of the vertical plate. The support members corresponding to mounting holes two and three are fastened to the upper plate surface of the base plate. The support member corresponding to mounting hole one is fixedly connected to the side wall of the U-shaped opening and supports the nut end of the three-way valve one corresponding to the sample needle.

[0019] Preferably, it also includes an adjusting screwdriver, the adjusting end of which has an adjusting groove arranged corresponding to the switch of the three-way valve.

[0020] Preferably, the assembly table includes a horizontal assembly surface and a vertical assembly surface arranged vertically, and the assembly rack is connected to the horizontal assembly surface by a connector.

[0021] Preferably, it also includes support legs, with multiple support legs evenly arranged at the bottom end of the assembly base and fixedly connected to the bottom end of the assembly base.

[0022] Preferably, the number of support legs is four.

[0023] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a pre-assembled component for PRP extraction, which has the following beneficial effects:

[0024] This component provides a stable mounting base through the assembly platform, and the sliding plug-in design of the assembly frame enables rapid positioning. The sample needle in the separation component has two centrifugation working positions with the tip facing up and down, as well as corresponding extraction working positions, eliminating the need to transfer samples or replace needles. It is compatible with different centrifugation processes and avoids stratification disorder and contamination. At the same time, each component can be pre-assembled to improve positioning accuracy and assembly efficiency. The sample needle is selectively connected to two extraction needles through connecting fittings, which can be directly connected to automated equipment to meet the needs of large-scale PRP extraction. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 The attached figure is a structural schematic diagram of a pre-assembled component for PRP extraction provided by this utility model (Example 1);

[0027] Figure 2 The attached figure is a structural schematic diagram of the assembly base provided by this utility model;

[0028] Figure 3 The attached figure is a structural schematic diagram of the assembly frame and the separation component provided by this utility model in the assembly state (Example 1);

[0029] Figure 4 The attached figure is a structural schematic diagram of the assembly rack (Embodiment 1) provided by this utility model;

[0030] Figure 5 The attached figure is an exploded view of the assembly rack (Example 1) provided by this utility model;

[0031] Figure 6 The attached figure is a schematic diagram of the structure of the separation component provided by this utility model;

[0032] Figure 7 The attached figure is a structural schematic diagram of a pre-assembled component for PRP extraction provided by this utility model (Example 2);

[0033] Figure 8 The attached figure is a structural schematic diagram of the assembly frame and the separation component provided by this utility model in the assembly state (Embodiment 2);

[0034] Figure 9 The attached figure is a structural schematic diagram of the assembly rack (Embodiment 2) provided by this utility model;

[0035] Figure 10 The attached figure is a structural schematic diagram of the assembly rack and separation assembly provided by this utility model in the assembly state (Example 1) (two sample needles);

[0036] Figure 11 The attached figure is a structural schematic diagram of the adjusting screwdriver provided by this utility model;

[0037] Figure 12 The attached figure is a structural schematic diagram of the three-way valve (three-way valve one and three-way valve two) provided by this utility model.

[0038] in:

[0039] 1-Assembly base; 2-Assembly rack; 3-Separation component; 4-Adjusting screwdriver; 10-Assembly table; 11-Assembly base; 12-Assembly frame; 13-Support leg; 14-Baffle; 15-Stop block; 16-Plug-in block; 21-Support base; 22-Test tube assembly component; 23-Support block; 24-Connecting frame; 25-Supporting frame; 31-Sample needle; 32-Extraction needle; 33-Connecting fitting; 41-Adjusting groove; 100-Leaving port; 101-Horizontal assembly table; 102 - Vertical assembly platform; 121- Support plate; 211- Base plate; 212- Vertical plate; 221- Connector 1; 222- Connector 2; 223- Connector 3; 331- Three-way valve 1; 332- Three-way valve 2; 2110- U-shaped port; 2111- Insertion groove; 2121- Insertion through hole; 2211- Mounting hole 1; 2212- Insertion hole; 2221- Mounting hole 2; 2231- Mounting hole 3; 3311- Butt joint end; 3312- Stud end; 3313- Nut end. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] See appendix Figure 1 To be continued Figure 6 This utility model discloses a pre-assembled assembly for PRP extraction, including: an assembly base 1, an assembly frame 2, and a separation assembly 3;

[0042] The assembly base 1 includes an assembly base 11 and an assembly frame 12 fixed on the assembly base 11. The assembly frame 12 has an assembly table 10, which is spaced apart from the bottom of the assembly base 11. A clearance opening 100 is provided on the assembly table 10.

[0043] The assembly frame 2 includes a support base 21 and a test tube assembly assembly 22. The support base 21 is slidably inserted into the assembly table 10. The test tube assembly assembly 22 is fixedly connected to the support base 21 and includes a sample test tube mounting part arranged corresponding to the clearance port and two extraction test tube mounting parts located on both sides of the sample test tube mounting part.

[0044] The separation component 3 includes a sample needle 31 and an extraction needle 32. The sample needle 31 is inserted into the sample tube mounting part. As a centrifugal carrier, the sample needle 31 has two centrifugation working positions during centrifugation: one with the tip facing up and the other with the tip facing down. The sample needle 31 has two working positions, one with the tip facing up and the other with the tip facing down, located inside the relief port 100 and above the assembly table 10, respectively, and arranged corresponding to its two centrifugation working positions. There are two extraction needles 32, which are arranged and inserted into two extraction tube mounting parts, respectively. The tip of the sample needle 31 is selectively connected to the tip of the two extraction needles 32 through the connecting tube 33.

[0045] Specifically, the assembly base 1 has a front end and a rear end arranged relative to each other.

[0046] Specifically, the assembly stand 12 includes an assembly stand body and a support plate 121. The assembly stand body is located at the edge of the assembly base 11 and is arranged perpendicularly to and fixedly connected to the upper surface of the assembly base 11. The surface of the support plate 121 is arranged perpendicularly to the height direction of the assembly base 1 and is fixedly connected to the assembly stand body. The two support plates 121 are arranged symmetrically along the center of the assembly base 1 on the side. The gap between the two support plates 121 is a clearance opening 100.

[0047] Specifically, the assembly table 10 includes a horizontal assembly table 101 and a vertical assembly table 102. The upper surfaces of the two support plates 121 constitute the horizontal assembly table 101. The main body of the assembly frame is a long strip, and its length direction is arranged parallel to the height direction of the assembly base 1. The surface of the main body of the assembly frame facing the assembly base 11 is called the first surface. The support plate 121 is fixedly connected to the first surface of the main body of the assembly frame. The position of the first surface of the main body of the assembly frame above the upper surface of the support plate 121 is the vertical assembly table 102.

[0048] More specifically, it also includes a baffle 14, a stop block 15, and a plug block 16. The baffle 14 is a long strip and is fixedly connected to the upper surface of the support plate 121, with its length direction perpendicular to the plate surface. The stop block 15 is a long strip and is fixedly connected to the upper surface of the support plate 121 and is arranged parallel to the baffle 14. The plug block 16 is fixedly connected to the vertical assembly table 102, and a light-emitting plate is installed at the end of the plug block 16 away from the vertical assembly table 102.

[0049] In this embodiment, the test tube assembly 22 includes a first connector 221, a second connector 222, and a third connector 223. The first connector 221, the second connector 222, and the third connector 223 are all fixedly connected to the support base 21. The first connector 221 has a first mounting hole 2211. The second connector 222 and the third connector 223 are located on both sides of the first connector 221, and have a second mounting hole 2221 and a third mounting hole 2231, respectively. The first mounting hole 2211 is the sample test tube mounting part, and the second mounting hole 2221 and the third mounting hole 2231 are the extraction test tube mounting parts.

[0050] In one embodiment, the assembly frame 2 further includes support members, multiple support members being fixedly connected to the support base 21 and respectively arranged corresponding to mounting holes 2211, 2221, and 2231. Thus, the support members of the support frame 2, corresponding to mounting holes 2211, 2221, and 2231, support the sample needle 31, extraction needle 32, and connecting parts, preventing the components from tilting due to vibration or gravity during centrifugation or extraction, avoiding extraction position deviation and sample loss, while also distributing the force on the components, reducing wear, extending component lifespan, and lowering maintenance costs.

[0051] See appendix Figure 12 The connecting fitting 33 includes multiple three-way valves 331. Each three-way valve 331 has a mating end 3311 that connects to the tip of the needle tube, and stud ends 3312 and nut ends 3313 located on both sides of the mating end 3311. The threads of the nut ends 3313 and stud ends 3312 are arranged accordingly. The mating end 3311 is selectively connected to the stud ends 3312 and nut ends 3313. The bottom ends of the sample needle tube 31 and the extraction needle tube 32 are both connected to three-way valves 331. The three-way valves 331 corresponding to the sample needle tube 31 and the three-way valves 331 corresponding to the two extraction needle tubes 32 are selectively connected through three-way valves 332. Multiple support members support the three-way valves 331 corresponding to the sample needle tube 31 and the two extraction needle tubes 32 respectively. Therefore, the three-way valve 331 and the three-way valve 332 of the connecting fitting 33 cooperate to realize multiple combinations of the sample needle tube 31 and the extraction needle tube 32, which can meet the needs of the step-by-step operation of PRP extraction. The threaded connection ensures the sealing of the passage, avoids sample leakage and contamination, and is compatible with subsequent expansion. The support component supports the three-way valve 331 to prevent the valve from shifting or loosening, ensures the stability of the passage, and improves the reliability and flexibility of extraction.

[0052] Specifically, the structure of three-way valve 2 332 is the same as that of three-way valve 1 331.

[0053] Specifically, the tip of the needle is spirally connected to the docking end 3311.

[0054] See appendix Figure 6The nut end 3313 of the three-way valve 331 corresponding to the sample needle 31 is screwed to the docking end 3311 corresponding to the three-way valve 332. The nut end 3313 and the stud end 3312 of the three-way valve 332 are screwed to the stud end 3312 and the nut end 3313 of the three-way valve 331 corresponding to the two extraction needles 32, respectively.

[0055] More specifically, the other end of the connection between the two extraction needle tubes 32 and the three-way valve 331 and the three-way valve 332 respectively is an extension position, which can be equipped with extraction needle tube 32 or sample needle tube 31.

[0056] See appendix Figure 11 It also includes an adjusting screwdriver 4, the adjusting end of which has an adjusting groove 41 arranged corresponding to the switch of the three-way valve 331.

[0057] Specifically, the shape of the adjustment groove 41 is cross-shaped.

[0058] In some specific embodiments, it also includes support legs 13, with multiple support legs 13 evenly arranged at the bottom end of the assembly base 11 and fixedly connected to the bottom end of the assembly base 11.

[0059] In this embodiment, the number of support legs 13 is four.

[0060] Example 1:

[0061] This method is suitable for the red blood cell removal process in PRP extraction. During centrifugation, the sample needle 31 serves as a centrifuge carrier containing the blood to be centrifuged, with the tip pointing downwards.

[0062] See appendix Figure 3 To be continued Figure 5 The tip of the sample needle 31 faces downward. The support base 21 includes a base plate 211 and a vertical plate 212. The base plate 211 is inserted into the assembly table 10. The vertical plate 212 is fixedly connected to the side wall of the base plate 211. Connector 1 221, connector 222 and connector 3 223 are all fixedly connected to the plate surface of the vertical plate 212. The support is fastened to the upper plate surface of the base plate 211.

[0063] Specifically, it also includes a connecting frame 24, which supports the connection between the base plate 211 and the upright plate 212.

[0064] Specifically, the rear end face of the base plate 211 is provided with a through-hole 2111, the through-hole 2111 is arranged and inserted into the stop 15, and the side wall of the base plate 211 is arranged and inserted into the stop 14.

[0065] Specifically, the upright plate 212 is provided with a plug-in through hole 2121 corresponding to the position of the plug-in block 16, the connector 221 is provided with a plug-in hole 2212 corresponding to and plugged into the plug-in block 16 along the front-back direction of the assembly base 1, the light-emitting plate is arranged corresponding to the syringe of the sample needle tube 31, and the support base 21 is plugged into the assembly table 10 along the front-back direction of the assembly base 1.

[0066] Specifically, the support is a support block 23, and the upper surface of the support block 23 has a groove that corresponds to the main body of the three-way valve 331.

[0067] See appendix Figure 10 To improve collection efficiency, in some embodiments, the connector 221 has two mounting holes 2211, and the sample needle tubes 31 are two in number, which are respectively inserted into the two mounting holes 2211. The three-way valves 331 corresponding to the two sample needle tubes 31 are arranged in series.

[0068] The following is a method for using a pre-assembled component for PRP extraction provided in this embodiment:

[0069] 1. Place the assembly base 1 on a horizontal operating surface and ensure the base is stable using the four support legs 13 at the bottom;

[0070] 2. Slide the support base 21 of the assembly frame 2 into the assembly table 10 so that the insertion slot 2111 of the base plate 211 is precisely aligned with the stop block 15 of the assembly table 10, the side wall of the base plate 211 is in contact with the stop plate 14, and at the same time the insertion through hole 2121 of the upright plate 212 is correspondingly inserted into the insertion block 16 of the vertical assembly surface 102.

[0071] 3. Place three-way valve 331 on each of the three support components on the support base 21. The nut end 3313 of the three-way valve 331 corresponding to the sample needle tube 31 is screwed to the docking end 3311 corresponding to the three-way valve 332. The nut end 3313 and stud end 3312 of the three-way valve 332 are screwed to the stud end 3312 and nut end 3313 of the three-way valve 331 corresponding to the two extraction needle tubes 32, respectively.

[0072] 4. At this point, the sample needle tube 31 contains the centrifuged blood and has formed a layered structure of "basal red blood cells near the tip - intermediate white membrane layer - anemic platelet plasma layer". Connect the tip of the sample needle tube 31 to the docking end 3311 of the corresponding three-way valve 331 in the pre-assembled connecting fitting with a screw thread to ensure a tight connection. Then connect the tips of the two extraction needle tubes 32 to the docking ends 3311 of the other two three-way valves 331 in the connecting fitting with a screw thread.

[0073] 5. Take the adjusting screwdriver 4, align the adjusting groove 41 of its adjusting end with the switch of each three-way valve 331, and adjust the connecting pipe in the connecting pipe fitting. This completes the pre-assembly before PRP extraction.

[0074] Example 2:

[0075] See appendix Figure 7 To be continued Figure 9 It is suitable for the plasma removal method in PRP extraction. During centrifugation, the sample needle 31 serves as a centrifugal carrier containing the blood to be centrifuged, with the tip facing upwards.

[0076] The tip of the sample needle tube 31 faces upward. The support base 21 includes a base plate 211 and a vertical plate 212. The base plate 211 is inserted into the assembly table 10. The base plate 211 has a U-shaped opening 2110 arranged corresponding to the clearance opening 100. The vertical plate 212 is fixedly connected to the side wall of the base plate 211. Connector 1 221 is fixedly connected to the side wall of the U-shaped opening 2110. Connector 2 222 and connector 3 223 are located on both sides of connector 1 221 and are fixedly connected to the plate surface of the vertical plate 212. The support members corresponding to mounting holes 2221 and 3231 are fastened to the upper plate surface of the base plate 211. The support member corresponding to mounting hole 1 2211 is fixedly connected to the side wall of the U-shaped opening 2110 and supports the nut end 3313 of the three-way valve 331 corresponding to the sample needle tube 31.

[0077] Specifically, the support component corresponding to mounting hole 1 2211 is a support frame 25, and the support components corresponding to mounting hole 2221 and mounting hole 3 2231 are support blocks 23. The support frame 25 is an upwardly protruding strip structure. Both ends of the support frame 25 are fixedly connected to the side wall of the U-shaped opening 2110. The upwardly protruding part of the support frame 25 is provided with a support groove that corresponds to and contacts the nut end 3313 of the three-way valve 331 corresponding to the sample needle tube 31.

[0078] Specifically, connector 221 includes a ring plate of a C-shaped ring and a connecting plate fixedly connected to the outer ring surface of the ring plate. The two connecting plates are symmetrically arranged on both sides of the ring plate and fixedly connected to the side wall surface of the U-shaped opening 2110.

[0079] The following is a method for using a pre-assembled component for PRP extraction provided in this embodiment:

[0080] 1. Place the assembly base 1 on a horizontal operating surface and ensure the base is stable by using the four support legs 13 at the bottom to avoid component displacement or blood stratification disorder caused by the tilting of the base during subsequent assembly and extraction.

[0081] 2. Slide the support base 21 of the support frame assembly frame 2 into the assembly table 10, so that the edge of the base plate 211 fits with the baffle 14 of the assembly table 10 and the bottom is precisely aligned with the stop block 15. At the same time, ensure that the U-shaped opening 2110 on the base plate 211 corresponds completely to the clearance opening 100 of the assembly table 10, and the insertion through hole 2121 of the upright plate 212 is inserted into the corresponding insertion block 16 of the vertical assembly surface 102 to complete the positioning of the support base 21.

[0082] 3. Place three-way valve 331 on each of the three support components on the support base 21. The nut end 3313 of the three-way valve 331 corresponding to the sample needle tube 31 is screwed to the docking end 3311 corresponding to the three-way valve 332. The nut end 3313 and stud end 3312 of the three-way valve 332 are screwed to the stud end 3312 and nut end 3313 of the three-way valve 331 corresponding to the two extraction needle tubes 32, respectively.

[0083] 4. At this point, the sample needle tube 31 contains the centrifuged blood and has formed a layered structure of "platelet plasma layer near the tip - middle white membrane layer - bottom red blood cell layer". Connect the tip of the sample needle tube 31 upwards to the docking end 3311 of the corresponding three-way valve 331 in the pre-assembled connecting fitting, ensuring a tight connection. Then, connect the tips of the two extraction needle tubes 32 to the docking ends 3311 of the other two three-way valves 331 in the connecting fitting, respectively.

[0084] 5. Take the adjusting screwdriver 4, align the adjusting groove 41 of its adjusting end with the switch of each three-way valve 331, and adjust the connecting pipe in the connecting pipe fitting. This completes the pre-assembly before PRP extraction.

[0085] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0086] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pre-assembled component for PRP extraction, characterized in that, include: Assembly base (1), the assembly base (1) includes an assembly base (11) and an assembly frame (12) fixed on the assembly base (11). The assembly frame (12) has an assembly table (10). The assembly table (10) is arranged at a distance from the bottom end of the assembly base (11). The assembly table (10) has a clearance opening (100). Assembly frame (2), the assembly frame (2) includes a support base (21) and a test tube assembly assembly (22), the support base (21) is slidably inserted into the assembly table (10), the test tube assembly assembly (22) is fixedly connected to the support base (21) and includes a sample test tube mounting part arranged corresponding to the clearance port and two extraction test tube mounting parts located on both sides of the sample test tube mounting part; The separation component (3) includes a sample needle (31) and an extraction needle (32). The sample needle (31) is inserted into the sample tube mounting part. The sample needle (31) serves as a centrifugal carrier and has two centrifugation working positions with the tip facing up and the tip facing down during centrifugation. The sample needle (31) has two working positions with the tip facing up and the tip facing down, respectively located inside the relief port (100) and above the assembly table (10), and are arranged corresponding to its two centrifugation working positions. The number of extraction needles (32) is two, which are arranged and inserted into the two extraction tube mounting parts respectively. The tip of the sample needle (31) is selectively connected to the tip of the two extraction needles (32) through a connecting tube (33).

2. The pre-assembled component for PRP extraction according to claim 1, characterized in that, The test tube assembly (22) includes connector one (221), connector two (222) and connector three (223). Connector one (221), connector two (222) and connector three (223) are all fixedly connected to the support base (21). Connector one (221) has a mounting hole one (2211). Connector two (222) and connector three (223) are located on both sides of connector one (221) and have mounting holes two (2221) and three (2231) respectively. Mounting hole one (2211) is the sample test tube mounting part, and mounting holes two (2221) and three (2231) are the extraction test tube mounting parts.

3. A pre-assembled component for PRP extraction according to claim 2, characterized in that, The assembly frame (2) also includes support members, and multiple support members are fixedly connected to the support base (21) and are respectively arranged corresponding to the mounting hole one (2211), mounting hole two (2221) and mounting hole three (2231).

4. A pre-assembled component for PRP extraction according to claim 3, characterized in that, The connecting fitting (33) includes multiple three-way valves (331). Each three-way valve (331) has a mating end (3311) that connects to the tip of the needle tube, and stud ends (3312) and nut ends (3313) located on both sides of the mating end (3311). The threads of the nut ends (3313) and stud ends (3312) are arranged correspondingly. The mating end (3311) is selected from the stud ends (3312) and the nut ends (3313). Selective connection is provided, with a three-way valve 1 (331) connected to the bottom end of both the sample needle tube (31) and the extraction needle tube (32). The three-way valve 1 (331) corresponding to the sample needle tube (31) and the three-way valve 1 (331) corresponding to the two extraction needle tubes (32) are selectively connected through a three-way valve 2 (332). Multiple support members support the three-way valve 1 (331) corresponding to the sample needle tube (31) and the two extraction needle tubes (32) respectively.

5. A pre-assembled component for PRP extraction according to claim 4, characterized in that, The tip of the sample needle (31) faces downward. The support base (21) includes a base plate (211) and a vertical plate (212). The base plate (211) is inserted into the assembly table (10). The vertical plate (212) is fixedly connected to the side wall of the base plate (211). The first connector (221), the second connector (222), and the third connector (223) are all fixedly connected to the plate surface of the vertical plate (212). The support is fastened to the upper plate surface of the base plate (211).

6. A pre-assembled component for PRP extraction according to claim 4, characterized in that, The tip of the sample needle (31) faces upward. The support base (21) includes a base plate (211) and a vertical plate (212). The base plate (211) is inserted into the assembly table (10). The base plate (211) has a U-shaped opening (2110) corresponding to the clearance opening (100). The vertical plate (212) is fixedly connected to the side wall of the base plate (211). The first connector (221) is fixedly connected to the side wall of the U-shaped opening (2110). The second connector (222) and the connecting... The third connector (223) is located on both sides of the first connector (221) and is fixedly connected to the surface of the upright plate (212). The support corresponding to the second mounting hole (2221) and the third mounting hole (2231) is fastened to the upper surface of the bottom plate (211). The support corresponding to the first mounting hole (2211) is fixedly connected to the side wall of the U-shaped port (2110) and supports the nut end (3313) of the first three-way valve (331) corresponding to the sample needle tube (31).

7. A pre-assembled component for PRP extraction according to claim 4, characterized in that, It also includes an adjusting screwdriver (4), the adjusting end of which has an adjusting groove (41) arranged corresponding to the switch of the three-way valve (331).

8. A pre-assembled component for PRP extraction according to claim 1, characterized in that, The assembly table (10) includes a horizontal assembly surface (101) and a vertical assembly surface (102) arranged vertically. The assembly frame (2) is connected to the horizontal assembly surface (101) by a connector.

9. A pre-assembled component for PRP extraction according to claim 1, characterized in that, It also includes support legs (13), a plurality of the support legs (13) being evenly arranged at the bottom end of the assembly base (11) and fixedly connected to the bottom end of the assembly base (11).

10. A pre-assembled assembly for PRP extraction according to claim 9, characterized in that, The number of the supporting legs (13) is four.

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