Blood centrifugal separation and extraction device

Abstract

The utility model relates to the technical field of medical instruments, and discloses a blood centrifugal separation and extraction device. The blood centrifugal separation and extraction device comprises a centrifugal tube, a rotating head and a pipeline, the centrifugal tube is connected with one end of the rotating head through a connecting pipeline, the other end of the rotating head is connected with a liquid extraction device through a connecting pipeline, the centrifugal tube comprises a tube body, liquid collection parts, a connecting part and a ventilation part, and the liquid collection parts are arranged at the two ends of the tube body; the connecting part is arranged at the inlet and outlet end of the liquid collecting part, the ventilation part is arranged in the middle of the pipe body, and the pipe body, the liquid collecting part, the connecting part and the ventilation part form a single-cavity structure. The blood centrifugal separation and extraction device is simple in structure and convenient to install; by arranging the rotating head to connect the centrifugal tube and the liquid extraction device, the liquid extraction device is kept still in the rotating and centrifuging process of the centrifugal tube, the structure of the connecting pipeline is simplified, the risk that the connecting pipeline is wound in the rotating process is reduced, and installation is convenient.

Description

[0001] This application claims priority to patent application number 202311256424.X (the filing date of the prior application is September 27, 2023, and the utility model name is A blood centrifugation and extraction device). Technical Field

[0002] The utility model relates to the technical field of medical devices, in particular to a blood centrifugal separation and extraction device for separating whole blood to obtain platelet-rich plasma or other blood components of required concentration. Background Art

[0003] The existing horizontal centrifuge container products of the same type have a relatively complex structure, usually consisting of two centrifugal chambers, an intermediate partition block, main / branch pipes and a tee. The intermediate block also needs to have an exhaust valve connecting the two centrifugal chambers and a guide channel for the main pipe to pass through. During installation, it is necessary to first pass the main pipe through the reversing holes on the rotating base and the chuck, then install the centrifuge container on the chuck of the rotating base, install the pipes in other parts into the corresponding locks, and then connect the syringe to the tubular connector and finally install it on the drive device. During the centrifugation process, the centrifuge container and the pipeline need to form a differential rotation to remove the torsional torque caused by the rotation of the pipeline, so as to achieve the centrifugal function of continuous rotation. In actual use, the existing product only provides two syringes for aspirating blood. During use, the large-capacity syringe is used to inject whole blood and aspirate the PPP / red blood cell layer, and the small-capacity syringe is used to aspirate and inject PRP.

[0004] The horizontal container structure of the blood centrifugal separation and extraction device in the prior art is relatively complex; due to the rotation principle, the installation process of the centrifugal component is relatively complicated; there are only two syringes for aspirating blood, which does not meet the requirements of multi-component separation.

[0005] Therefore, there is an urgent need for a blood centrifugal separation and extraction device to solve the above problems. Utility Model Content

[0006] Based on the above, the purpose of the present invention is to provide a blood centrifugal separation and extraction device with a simple structure, easy installation, and capable of multi-component separation.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A blood centrifuge separation and extraction device includes a centrifuge tube, a rotating head and a pipeline. The centrifuge tube is connected to one end of the rotating head through a connecting pipeline, and the other end of the rotating head is connected to a liquid extraction device through a connecting pipeline. The centrifuge tube includes a tube body, a liquid collecting part, a connecting part and a vent. The liquid collecting part is arranged at both ends of the tube body, the connecting part is arranged at the inlet and outlet ends of the liquid collecting part, and the vent is arranged on the tube body. The tube body, liquid collecting part, connecting part and vent constitute a single cavity structure.

[0009] As a preferred solution of the blood centrifugal separation and extraction device, the tube body is an integrated structure, the liquid collection part includes a left liquid collection part and a right liquid collection part, and the left liquid collection part and the right liquid collection part are respectively arranged at the two ends of the tube body, the connecting part includes a left connecting part and a right connecting part, and the left connecting part and the right connecting part are respectively arranged at the inlet and outlet ends of the left liquid collection part and the right liquid collection part, the left connecting part is connected to one end of the first tee through a pipeline, the right connecting part is connected to the other end of the first tee through a pipeline, the third end of the first tee is connected to the other end of the rotating head, the vent is arranged in the middle of the tube body, preferably, the vent is arranged at the upper end of the tube body.

[0010] As a preferred solution of the blood centrifugation and extraction device, the tube body includes a left tube body and a right tube body, the liquid collection part includes a left liquid collection part and a right liquid collection part, the left liquid collection part is arranged on the left side of the left tube body, and the right liquid collection part is arranged on the right side of the right tube body, the connecting part includes a left connecting part and a right connecting part, the left connecting part and the right connecting part are respectively arranged at the inlet and outlet ends of the left liquid collection part and the right liquid collection part, the left connecting part is connected to one end of the first tee through a pipeline, the right connecting part is connected to the other end of the first tee through a pipeline, the third end of the first tee is connected to the other end of the rotating head, the vent is arranged in the middle of the tube body, and the vent is preferably arranged at the upper end of the tube body.

[0011] As a preferred solution of the blood centrifugal separation and extraction device, the centrifuge tube further includes a fixing portion, which is arranged in the middle of the tube body, and a baffle structure can be optionally provided inside the fixing portion.

[0012] As a preferred solution of the blood centrifugal separation and extraction device, the liquid collection part is entirely or partially an inner cavity structure with diameters from large to small, and the connecting part is fixedly connected to the small diameter end of the liquid collection part and is provided with an inner hole communicating therewith.

[0013] As a preferred solution of the blood centrifugal separation and extraction device, the inner hole rotation axis of the connecting part is preferably coaxial with or parallel to the rotation axis of the tube body.

[0014] As a preferred solution of the blood centrifugal separation and extraction device, the rotation axis of the inner hole of the connecting portion is preferably perpendicular to the rotation axis of the tube body or is arranged at other angles.

[0015] As a preferred embodiment of the blood centrifugal separation and extraction device, the rotating head includes an upper shell, a lower shell, a slider, a rotating tube, a spring and a bearing. The slider, rotating tube, spring and bearing are installed in a sealed cavity formed by the upper shell and the lower shell. One end of the spring abuts against the inner wall of the upper shell, the other end of the spring abuts against one end of the slider, and the other end of the slider abuts against one end of the rotating tube. One end of the rotating head can rotate freely relative to the other end of the rotating head.

[0016] As a preferred solution of the blood centrifugal separation and extraction device, a groove is provided on the lower shell for accommodating a first sealing ring, and the upper shell and the lower shell are sealed and connected via the first sealing ring.

[0017] As a preferred solution of the blood centrifugal separation and extraction device, the outer wall of the slider is provided with at least one groove for accommodating a second sealing ring, and the slider is sealedly connected to the inner wall of the upper shell through the second sealing ring. The upper end of the rotating tube is provided with at least one groove for accommodating a third sealing ring, and the rotating tube is connected to the inner wall of the lower shell through the third sealing ring.

[0018] As a preferred solution of the blood centrifugal separation and extraction device, the other end of the rotating tube is serially connected to at least two tees, and one end or both ends of the tees are connected to the liquid extraction device through a joint.

[0019] As a preferred solution of the blood centrifugal separation and extraction device, the rotating head includes an upper shell, a lower shell and a rotating tube. The rotating tube is rotatably installed in a sealed cavity formed by the upper shell and the lower shell. The upper shell is provided with a first channel, and the first channel is connected to a second tee. The rotating tube is provided with a second channel, and one end of the second channel is connected to the first channel, and the other end is connected to the first tee.

[0020] As a preferred solution of the blood centrifugal separation and extraction device, a first boss is provided in the upper shell, and a second boss is provided in the lower shell. The second boss can cooperate with the first boss to connect the upper shell and the lower shell.

[0021] As a preferred solution of the blood centrifugal separation and extraction device, the rotating head also includes a first bearing and a second bearing, and the lower shell is provided with a first groove for accommodating the first bearing and a second groove for accommodating the second bearing, and the inner rings of the first bearing and the second bearing are both matched with the rotating tube.

[0022] As a preferred embodiment of the blood centrifugal separation and extraction device, a third sealing ring is provided between the upper shell and the lower shell, and the lower shell is provided with a third groove for accommodating the third sealing ring, and / or a fifth sealing ring is provided between the lower shell and the rotating tube, and the rotating tube is provided with a fifth groove for accommodating the fifth sealing ring.

[0023] As a preferred solution of the blood centrifugal separation and extraction device, the rotating head further includes a retaining ring, the rotating tube is provided with a fourth groove for accommodating the retaining ring, and the retaining ring can abut against the inner ring end of the first bearing.

[0024] The beneficial effects of the utility model are:

[0025] 1. The centrifuge tube in the blood centrifugal separation and extraction device of the utility model is an integrated structure with simple structure, easy assembly and low production cost;

[0026] 2. In the blood centrifugal separation and extraction device of the utility model, the centrifuge tube and the liquid extraction device are connected by a rotating head. During the centrifugal process of the centrifuge tube, the liquid extraction device remains stationary, which greatly simplifies the structure of the centrifuge tube and the connecting pipeline. During installation, it is only necessary to snap the rotating tube, centrifuge tube, and liquid extraction device into the corresponding positions respectively, without the need for perforation and other steps;

[0027] 3. The blood centrifugal separation and extraction device of the present invention can be provided with at least three pipelines connected to the liquid extraction device to achieve classified storage of at least three blood components. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0029] Figure 1 This is a perspective view of a centrifugal separation and extraction device in one embodiment of the present invention;

[0030] Figure 2 This is a front view of a centrifugal separation and extraction device in one embodiment of the present invention;

[0031] Figure 3 A side view of a centrifugal separation and extraction device in one embodiment of the present invention;

[0032] Figure 4 for Figure 3 AA section view;

[0033] Figure 5 for Figure 4 A magnified view of part A in FIG;

[0034] Figure 6 is a perspective view of a centrifugal separation and extraction device in another embodiment of the present invention;

[0035] Figure 7 A side view of a centrifugal separation and extraction device in another embodiment of the present invention;

[0036] Figure 8 for Figure 7 BB cross-sectional view;

[0037] Figure 9 It is a cross-sectional view of another structure of the fixing portion of the centrifugal separation and extraction device in one embodiment of the present invention;

[0038] Figure 10 is a cross-sectional view of a centrifugal separation and extraction device in another embodiment of the present invention;

[0039] Figure 11 for Figure 10 Enlarged view of part C in ;

[0040] Figure 12 is a cross-sectional view of an upper shell of a centrifugal separation and extraction device in another embodiment of the present invention;

[0041] Figure 13 is a cross-sectional view of a rotating tube of a centrifugal separation and extraction device in another embodiment of the present invention;

[0042] Figure 14 This is a cross-sectional view of the lower shell of the centrifugal separation and extraction device in another embodiment of the present invention.

[0043] In the picture:

[0044] 1-centrifuge tube, 11-tube body, 111-left tube body, 112-right tube body, 12-liquid collecting part, 121-left liquid collecting part, 122-right liquid collecting part, 13-connecting part, 131-left connecting part, 132-right connecting part, 14-fixing part, 15-ventilation part, 16-bacteria barrier, 2-rotating head, 141-baffle, 21-upper shell, 211-first boss, 212-first channel, 22-lower shell, 221-second boss, 222-first groove, 223-second groove, 224-third groove, 23-first sealing ring, 24-spring, 25-slider, 26-second sealing ring, 27-rotating tube, 271-second channel, 272-fourth groove, 273-fifth groove, 274-third boss, 28-third sealing ring, 29-bearing, 291-first bearing, 292-second bearing, 31-first tee, 32-second tee, 33-third tee, 41-first joint, 42-second joint, 43-third joint, 44-fourth sealing ring, 45-fifth sealing ring, 46-circlip. DETAILED DESCRIPTION

[0045] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0047] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or removable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0048] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0049] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0050] Example 1

[0051] like Figure 1 As shown, a blood centrifugal separation and extraction device in a specific embodiment of the present invention includes a centrifuge tube 1, a rotating head 2 and a connecting pipeline. The inlet and outlet ends of the centrifuge tube 1 are connected to one end of the rotating head 2 through a connecting pipeline, and the other end of the rotating head 2 is connected to a liquid extraction device (not shown in the figure) through a connecting pipeline. In the present invention, the other end of the rotating head 2 is fixedly connected to the liquid extraction device, and one end of the rotating head 2 can rotate freely relative to the other end of the rotating head 2.

[0052] like Figure 2-Figure 4 As shown, the centrifuge tube 1 in this embodiment includes a tube body 11, a liquid collecting part 12, a connecting part 13, a fixing part 14 and a vent 15; specifically, the tube body 11 is an integrated structure, the liquid collecting part 12 includes a left liquid collecting part 121 and a right liquid collecting part 122, and the left liquid collecting part 121 and the right liquid collecting part 122 are respectively arranged at the two ends of the tube body 11, the connecting part 13 includes a left connecting part 131 and a right connecting part 132, and the left connecting part 131 and the right connecting part 132 are respectively arranged at the inlet and outlet ends of the left liquid collecting part 121 and the right liquid collecting part 122, the fixing part 14 is arranged in the middle of the tube body 11, and the vent 15 is arranged on the tube body 11; the left connecting part 131 is connected to one end of the first tee 31 through a connecting pipeline, the right connecting part 132 is connected to the other end of the first tee 31 through a connecting pipeline, and the third end of the first tee 31 is connected to the other end of the rotating head 2. The tube body 11 of the present invention may also include a left tube body 111 and a right tube body 112. Accordingly, the left liquid collection portion 121 is disposed on the left side of the left tube body 11, and the right liquid collection portion 122 is disposed on the right side of the right tube body. The tube body 11, liquid collection portion 12, connecting portion 13, fixing portion 14, and venting portion 15 of the centrifuge tube 1 in this embodiment form a single-chamber structure, which is simple in structure, has good sealing performance, and is easy to assemble and produce.

[0053] Specifically, the inner diameter of the tube body 11 in this embodiment is constant. The inner diameter of the tube body 11 in the present invention may also be gradually enlarged from the middle to both sides (e.g. Figure 9 The cross section of the tube body 11 in this embodiment is circular, and the cross section of the tube body 11 in the present invention may also be elliptical or polygonal.

[0054] Specifically, the vent portion 15 in this embodiment is provided in the middle of the tube body 11. Preferably, the vent portion 15 is provided at the upper end of the tube body 11. The fixing portion 14 is provided in the middle of the tube body 11. The present invention can also provide a baffle 141 (such as Figure 9 shown).

[0055] Specifically, a bacteria-blocking member 16 is further provided on the vent portion 15 of the centrifuge tube 1 in this embodiment, for preventing bacteria from entering the interior of the tube body 11 while ventilating.

[0056] Specifically, the liquid collecting portion 12 in this embodiment is entirely or partially an inner cavity structure with diameters decreasing from large to small, and the connecting portion 13 is fixedly connected to the small-diameter end of the liquid collecting portion 12 and is provided with an inner hole communicating therewith.

[0057] Specifically, the inner hole rotation axis of the connecting portion 13 in this embodiment is coaxial with or parallel to the rotation axis of the tube body 11. The inner hole rotation axis of the connecting portion 13 in the present invention can also be perpendicular to the rotation axis of the tube body 11 or be set at other angles.

[0058] like Figure 5 As shown, the rotary head 2 in this embodiment includes an upper shell 21 and a lower shell 22, and the upper shell 21 and the lower shell 22 are connected by a connecting hole. Specifically, a groove is further provided on the lower shell 22 of this embodiment for accommodating a first sealing ring 23, and the upper shell 21 and the lower shell 22 are sealed by the first sealing ring 23.

[0059] The rotating head 2 in this embodiment further includes a spring 24, a slider 25, and a rotating tube 27, wherein the spring 24, slider 25, and rotating tube 27 are installed in a sealed cavity formed by the upper shell 21 and the lower shell 22. In this embodiment, one end of the upper shell 21 is provided with a connecting channel connected to the connecting pipeline, and the other end of the upper shell 21 is provided with a first cavity for accommodating the slider 25 and the spring 24. One end of the spring 24 abuts against the inner wall of the upper shell 21, and the other end of the spring 24 abuts against one end of the slider 25. The other end of the slider 25 is abutted and connected via one end of the rotating tube 27, allowing the slider 25 to slide up and down and rotate along the inner wall of the first cavity.

[0060] Specifically, the outer wall of the slider 25 in this embodiment is provided with at least one groove for accommodating the second sealing ring 26. The slider 25 is sealed to the inner wall of the upper shell 21 via the second sealing ring 26. In this embodiment, the slider 25 is provided with two grooves for accommodating two second sealing rings 26. The slider 25 in the present invention may also be provided with one groove, three grooves, or more grooves, correspondingly matching one second sealing ring, three second sealing rings, or more sealing rings.

[0061] Specifically, the lower shell 22 in this embodiment is provided with a second cavity for accommodating the other end of the upper shell 21 and a third cavity for accommodating the rotating tube 27. The rotating tube 27 is restricted to rotate freely inside the sealing slider 25 by a bearing 29 and a retaining spring.

[0062] Specifically, the upper end of the rotating tube 27 in this embodiment is provided with at least one groove for accommodating the third sealing ring 28. The rotating tube 27 is sealedly connected to the inner wall of the third cavity of the lower shell 22 via the third sealing ring 28. The rotating tube 27 in the present invention may also be provided with one groove, three grooves, or more grooves, correspondingly matching one second sealing ring, three second sealing rings, or more sealing rings.

[0063] Specifically, the lower end of the lower shell 22 is further provided with a fixed end 221 of a polygonal structure. When in use, the fixed end 221 of the rotating head 2 is fixedly mounted on the centrifugal device. Due to the existence of the rotating head 2, the centrifuge tube 1 connected to one end of the rotating head 2 is connected to the pipeline for rotational centrifugation, and the other end of the rotating head 2 is connected to the liquid extraction device and remains stationary, which plays a role in connection and diversion while realizing that the pipelines at both ends can rotate relative to each other, meeting the needs of rotational centrifugation. Therefore, the structure of the centrifuge tube and each pipeline is greatly simplified. Therefore, during installation, it is only necessary to snap the rotating head 2 and the upper and lower connecting parts into the corresponding positions respectively, and no further steps such as perforation are required.

[0064] One end of the rotating head 2 in this embodiment is connected to one end of the second tee 32, the other end of the second tee 32 is connected to the first joint 41 and the first liquid extraction device through a connecting pipe, the third end of the second tee 32 is connected to one end of the third tee 33 through a connecting pipe, the other end of the third tee 33 is connected to the second joint 42 and the second liquid extraction device through a connecting pipe, and the third end of the third tee 33 is connected to the third joint 43 and the third liquid extraction device through a connecting pipe; according to actual application needs, the utility model can also be connected in series with a fourth tee, a fifth tee, or even more tees to connect a fourth liquid extraction device, a fifth liquid extraction device, or even more liquid extraction devices to achieve classified storage of at least three blood components.

[0065] Specifically, the liquid extraction device in the present invention is a medical syringe, and the first connector 41, the second connector 42 and the third connector 43 in the present invention are standard Luer connectors.

[0066] Example 2

[0067] like Figure 6 As shown, a blood centrifugal separation and extraction device in a specific embodiment of the present invention includes a centrifuge tube 1, a rotating head 2 and a connecting pipeline. The inlet and outlet ends of the centrifuge tube 1 are connected to one end of the rotating head 2 through a connecting pipeline, and the other end of the rotating head 2 is connected to a liquid extraction device (not shown in the figure) through a connecting pipeline. In the present invention, the other end of the rotating head 2 is fixedly connected to the liquid extraction device, and one end of the rotating head 2 can rotate freely relative to the other end of the rotating head 2.

[0068] like Figure 7-8 As shown, the centrifuge tube 1 in this embodiment includes a tube body 11, a liquid collecting portion 12, a connecting portion 13, a fixing portion 14 and a vent 15. The tube body 11 includes a left tube body 111 and a right tube body 112. The liquid collecting portion 12 includes a left liquid collecting portion 121 and a right liquid collecting portion 122. The left liquid collecting portion 121 and the right liquid collecting portion 122 are respectively arranged at both ends of the tube body 11. The connecting portion 13 includes a left connecting portion 131 and a right connecting portion 132. The left connecting portion 131 and the right connecting portion 132 are respectively arranged at the inlet and outlet ends of the left liquid collecting portion 121 and the right liquid collecting portion 122. The fixing portion 14 is arranged in the middle of the tube body 11. A vent 15 is respectively arranged on the left tube body 111 and the right tube body 112. The left connection part 131 is connected to one end of the first tee 31 through a connecting pipe, the right connection part 132 is connected to the other end of the first tee 31 through a connecting pipe, and the third end of the first tee 31 is connected to the other end of the rotary head 2.

[0069] Specifically, the left tube body 111 and the right tube body 112 in this embodiment are fixedly connected, and the fixed connection method can be bonding, welding or locking connection.

[0070] Specifically, in this embodiment, the left tube body 111 and the right tube body 112 have the same structure, the left liquid collecting portion 121 and the right liquid collecting portion 122 have the same structure, and the left connecting portion 131 and the right connecting portion 132 have the same structure.

[0071] Specifically, a bacteria-blocking member 16 is further provided on the vent portion 15 of the centrifuge tube 1 in this embodiment, for preventing bacteria from entering the tube body 11 while ventilating.

[0072] Specifically, the liquid collecting portion 12 in this embodiment is entirely or partially an inner cavity structure with diameters decreasing from large to small, and the connecting portion 13 is fixedly connected to the small-diameter end of the liquid collecting portion 12 and is provided with an inner hole communicating therewith.

[0073] Specifically, the inner hole rotation axis of the connecting portion 13 in this embodiment is preferably coaxial with or parallel to the rotation axis of the tube body 11. The inner hole rotation axis of the connecting portion 13 in this embodiment can also be perpendicular to the rotation axis of the tube body 11 or set at other angles.

[0074] The structure of the rotating head 2 in this embodiment is the same as that in the first embodiment, and the connection method of the centrifuge tube 1, the rotating head 2 and the liquid extraction device is also the same.

[0075] Example 3

[0076] The blood centrifugal separation and extraction device in a specific embodiment of the present invention includes a centrifuge tube 1, a rotating head 2 and a connecting pipeline, wherein the structure of the centrifuge tube 1 can be the same as that of embodiment 1 or embodiment 2, and the rotating head 2 is different from that of embodiment 1. Figure 10-14 As shown, the rotating head 2 includes an upper shell 21, a lower shell 22 and a rotating tube 27. The rotating tube 27 is rotatably installed in a sealed cavity formed by the upper shell 21 and the lower shell 22. The upper shell 21 is provided with a first channel 212, and the first channel 212 is connected to the second tee 32. The rotating tube 27 is provided with a second channel 271. One end of the second channel 271 is connected to the first channel 212, and the other end is connected to the first tee 31. The first channel 212 and the second channel 271 are used for the circulation of liquid.

[0077] The lower end of the upper shell 21 is provided with a cavity for accommodating the upper end of the lower shell 22. In order to realize the connection between the upper shell 21 and the lower shell 22, the inner wall of the lower end of the upper shell 21 is provided with a first boss 211, and the outer wall of the lower shell 22 is provided with a second boss 221. The second boss 221 can cooperate with the first boss 211 so that the upper end of the lower shell 22 is connected to the cavity at the lower end of the upper shell 21.

[0078] Furthermore, in order to achieve the connection between the rotating head 2 and the upper shell 21 and the lower shell 22, the rotating head 2 also includes a retaining spring 46, and the rotating tube 27 is provided with a fourth groove 272 for accommodating the retaining spring 46. When the upper shell 21 is connected to the lower shell 22, the retaining spring 46 can simultaneously abut against the inner ring of the first bearing 291.

[0079] The rotating head 2 also includes a first bearing 291 and a second bearing 292, which are used to ensure smooth rotation between the rotating tube 27 and the lower shell 22. The lower shell 22 is provided with a first groove 222 for accommodating the first bearing 291 and a second groove 223 for accommodating the second bearing 292. The inner rings of the first bearing 291 and the second bearing 292 are both engaged with the rotating tube 27. The first bearing 291 is located close to the upper shell 21, while the second bearing 292 is located away from the upper shell 21. The rotating tube 27 is also provided with a third boss 274 to assist in the installation of the second bearing 292.

[0080] A fourth sealing ring 44 is provided between the upper shell 21 and the lower shell 22 to achieve a seal between the upper shell 21 and the lower shell 22. The lower shell 22 is provided with a third groove 224 for accommodating the fourth sealing ring 44. Alternatively, a fifth sealing ring 45 is provided between the lower shell 22 and the rotating tube 27 to achieve a seal between the lower shell 22 and the rotating tube 27. The rotating tube 27 is provided with a fifth groove 273 for accommodating the fifth sealing ring 45. Preferably, the fifth sealing ring 45 is provided between the first bearing 291 and the second bearing 292.

[0081] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A blood centrifugal separation and extraction device, characterized in that: It includes a centrifuge tube, a rotating head and a pipeline. The centrifuge tube is connected to one end of the rotating head through a connecting pipeline, and the other end of the rotating head is connected to a liquid extraction device through a connecting pipeline. The centrifuge tube includes a tube body, a liquid collecting part, a connecting part and a vent. The liquid collecting part is arranged at both ends of the tube body, the connecting part is arranged at the inlet and outlet ends of the liquid collecting part, and the vent is arranged on the tube body. The tube body, liquid collecting part, connecting part and vent constitute a single cavity structure.

2. The blood centrifugal separation and extraction device according to claim 1, characterized in that: The tube body is an integrated structure, the liquid collecting part includes a left liquid collecting part and a right liquid collecting part, and the left liquid collecting part and the right liquid collecting part are respectively arranged at both ends of the tube body, the connecting part includes a left connecting part and a right connecting part, and the left connecting part and the right connecting part are respectively arranged at the inlet and outlet ends of the left liquid collecting part and the right liquid collecting part, the left connecting part is connected to one end of the first tee through a pipeline, the right connecting part is connected to the other end of the first tee through a pipeline, the third end of the first tee is connected to the other end of the rotating head, the vent is arranged in the middle of the tube body, and the vent is arranged at the upper end of the tube body.

3. The blood centrifugal separation and extraction device according to claim 1, characterized in that: The tube body includes a left tube body and a right tube body, the liquid collecting part includes a left liquid collecting part and a right liquid collecting part, the left liquid collecting part is arranged on the left side of the left tube body, and the right liquid collecting part is arranged on the right side of the right tube body, the connecting part includes a left connecting part and a right connecting part, the left connecting part and the right connecting part are respectively arranged at the inlet and outlet ends of the left liquid collecting part and the right liquid collecting part, the left connecting part is connected to one end of the first tee through a pipeline, the right connecting part is connected to the other end of the first tee through a pipeline, the third end of the first tee is connected to the other end of the rotating head, the vent is arranged in the middle of the tube body, and the vent is arranged at the upper end of the tube body.

4. The blood centrifugal separation and extraction device according to claim 2 or 3, characterized in that: The centrifuge tube further includes a fixing portion, which is arranged in the middle of the tube body. A baffle structure can be optionally arranged inside the fixing portion.

5. The blood centrifugal separation and extraction device according to claim 1, characterized in that: The liquid collecting part is entirely or partially an inner cavity structure with diameters ranging from large to small, and the connecting part is fixedly connected to the small-diameter end of the liquid collecting part and is provided with an inner hole communicating with the liquid collecting part.

6. The blood centrifugal separation and extraction device according to claim 1, characterized in that: The inner hole rotation axis of the connecting portion is coaxial with or parallel to the rotation axis of the tube body.

7. The blood centrifugal separation and extraction device according to claim 1, characterized in that: The inner hole rotation axis of the connecting portion is perpendicular to the rotation axis of the tube body or is arranged at other angles.

8. The blood centrifugal separation and extraction device according to claim 1, characterized in that: The rotating head includes an upper shell, a lower shell, a slider, a rotating tube, a spring and a bearing. The slider, rotating tube, spring and bearing are installed in a sealed cavity formed by the upper shell and the lower shell. One end of the spring abuts against the inner wall of the upper shell, the other end of the spring abuts against one end of the slider, and the other end of the slider abuts against one end of the rotating tube. One end of the rotating head can rotate freely relative to the other end of the rotating head.

9. The blood centrifugal separation and extraction device according to claim 8, characterized in that: The lower shell is provided with a groove for accommodating a first sealing ring, and the upper shell and the lower shell are sealedly connected through the first sealing ring. The outer wall of the slider is provided with at least one groove for accommodating a second sealing ring, and the slider is sealedly connected to the inner wall of the upper shell through the second sealing ring. The upper end of the rotating tube is provided with at least one groove for accommodating a third sealing ring, and the rotating tube is connected to the inner wall of the lower shell through the third sealing ring.

10. The blood centrifugal separation and extraction device according to claim 9, characterized in that: The other end of the rotating tube is connected in series with at least two tees, and one end or both ends of the tees are connected to the liquid extraction device through a joint.

11. The blood centrifugal separation and extraction device according to claim 1, characterized in that: The rotating head includes an upper shell, a lower shell and a rotating tube. The rotating tube is rotatably installed in a sealed cavity formed by the upper shell and the lower shell. The upper shell is provided with a first channel, which is connected to a second tee. The rotating tube is provided with a second channel, one end of the second channel is connected to the first channel, and the other end is connected to the first tee.

12. The blood centrifugal separation and extraction device according to claim 11, characterized in that: A first boss is provided in the upper shell, and a second boss is provided in the lower shell. The second boss can cooperate with the first boss to connect the upper shell and the lower shell.

13. The blood centrifugal separation and extraction device according to claim 11, characterized in that: The rotating head further includes a first bearing and a second bearing. The lower shell is provided with a first groove for accommodating the first bearing and a second groove for accommodating the second bearing. The inner rings of the first bearing and the second bearing are both matched with the rotating tube.

14. The blood centrifugal separation and extraction device according to claim 11, characterized in that: A fourth sealing ring is provided between the upper shell and the lower shell, and the lower shell is provided with a third groove for accommodating the fourth sealing ring, and / or a fifth sealing ring is provided between the lower shell and the rotating tube, and the rotating tube is provided with a fifth groove for accommodating the fifth sealing ring.

15. The blood centrifugal separation and extraction device according to claim 13, characterized in that: The rotating head further includes a clamping spring, and the rotating tube is provided with a fourth groove for accommodating the clamping spring. The clamping spring can abut against the inner ring end of the first bearing.

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