Blood collection and separation device

Abstract

The utility model discloses a blood collecting and separating device which comprises a separating cup, the separating cup comprises a cup body, a cup cover, a static head, an upper cover and a lower cover, a blood inlet and a blood outlet in the top of the static head are both vertically arranged, and the upper cover and the lower cover are connected with the bottom of the static head; the upper end of the lower cover is communicated with the blood inlet to form a blood inflow channel, and a space between the inner walls of the upper cover and the lower cover is communicated with the blood outlet to form a blood outflow channel; the liquid inlet end of the blood inflow channel penetrates through the cup cover along the interior of the lower cover and extends into the bottom of the cup body; the liquid outlet end of the blood outflow channel penetrates through the cup cover to be located at the cup opening along the top of the cup body and enters the gap between the upper cover and the lower cover. By improving the structure of the static head, automatic assembly of the separation cup and a consumable pipeline during use can be facilitated, meanwhile, automatic assembly in the production process of the separation cup can be facilitated by improving the connecting structure between the static head and the upper cover and the connecting structure between the static head and the lower cover, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of blood collection technology, and more specifically, to a blood collection and separation device. Background Technology

[0002] Blood collection and separation cups are commonly used consumables in the blood transfusion industry for collecting blood components and raw plasma, and then separating these components. The cup body, core, and stationary head are key components for achieving blood component separation. Its working principle is as follows: the centrifugal force generated by the high-speed rotation of the separation cup separates blood components, while the stationary head keeps the blood in place, allowing for both inflow and outflow. The stationary head is fixed to the cylinder head of the blood component separator, while the cup body is fixed to the rotating base of the separator, which drives the cup body to rotate at high speed. Currently, the blood inflow and outflow directions of the stationary head are both horizontal, making it inconvenient to connect the blood inlet / outlet to the blood flow tubing at the point of use, hindering automated assembly. Furthermore, with existing technology, the cup capacity is relatively fixed, making it inconvenient to collect different volumes.

[0003] In view of the above, this application is hereby submitted. Utility Model Content

[0004] The technical problem this invention aims to solve is that the blood inlet and blood component outflow directions of the stationary head of the separating cup are both horizontal, which makes it inconvenient to connect and assemble the blood inlet / outlet with the blood flow pipeline of consumables at the separating cup production site, and makes it difficult to achieve automated assembly. The purpose is to provide a blood collection and separation device that, through improvements to the stationary head structure, facilitates the automated assembly of the separating cup and consumable pipeline. At the same time, improvements to the connection structure between the stationary head and the upper and lower covers, as well as changes to the matching methods of elastic elements, fixed seals, and rotating seals, facilitate automated assembly in the separating cup production process and improve production efficiency.

[0005] This utility model is achieved through the following technical solution:

[0006] A blood collection and separation device includes a separation cup, the separation cup comprising a cup body, a cup lid, a stationary head, an upper cover, and a lower cover, characterized in that the blood inlet and blood outlet at the top of the stationary head are both vertically arranged, and the upper cover and the lower cover are connected to the bottom of the stationary head;

[0007] The lower cover is fitted inside the upper cover and its upper end is connected to the blood inlet to form a blood inflow channel. The space between the inner walls of the upper and lower covers is connected to the blood outlet to form a blood outflow channel.

[0008] The inlet of the blood inflow channel enters the lower cover from end A, passes through the cup lid, and extends into the bottom of the cup body;

[0009] The blood outflow channel flows along the top of the cup, through the lid at the mouth of the cup, into the gap between the upper and lower covers, and then out through point B.

[0010] The separation cup of this invention improves the blood inlet and outlet of the stationary head from horizontal to vertical. This allows for easier assembly of consumable tubing by clamping and fixing the stationary head with equipment during the production of the separation cup, and enabling automated assembly using automated equipment, eliminating the need for manual installation of consumable tubing as required by existing separation cups.

[0011] Furthermore, it also includes a fixing clamp, the bottom of which has a slot that matches the shape of the top of the stationary head. The fixing clamp is installed and removed from the stationary head by moving up and down or by flipping the cover. The fixing clamp is an integral part that can be flipped up and down, left and right, or front and back. The outer wall shape of the part where the stationary head mates with the fixing clamp is conical or cylindrical, and the fixing clamp slot and the stationary head are installed through the conical or cylindrical mating.

[0012] Because the blood inlet and outlet of the stationary head of the existing separation cup are horizontal, the fixing clamp of the blood separation equipment is usually composed of two clamps, which move relative to each other in the horizontal direction to clamp and fix the side wall of the stationary head. In this invention, the blood inlet and outlet of the stationary head are changed to be vertical, so the fixing clamp can also be improved into a single structure. The stationary head is clamped and fixed by moving the fixing clamp up and down or by flipping the fixing clamp, which makes the operation more convenient and can quickly fix the stationary head.

[0013] Furthermore, the outer wall of the mating area between the stationary head and the fixing fixture is conical or cylindrical. The fixing fixture slot and the stationary head are fitted together using the conical, cylindrical, or other similar structures. The mating surface is used to fix the stationary head and prevent rotation.

[0014] Furthermore, the lower end face of the stationary head is provided with a circular elastic element, which is sealed to the upper end face of the circular elastic element. The lower end of the elastic element is coaxially connected to a fixed sealing element, which is sealed to the upper end face of the fixed sealing element. The outer edge of the top of the cup lid is fitted with a rotating sealing element, and the lower end face of the fixed sealing element is attached to the upper end face of the rotating sealing element and rotates to seal.

[0015] The existing sealing structure between the stationary head and the cup lid involves pressing an elastic element between the stationary head and the upper cover, and then connecting it with a fixed seal. This invention changes the axial connection between the original elastic element and the fixed seal to an end face fit, which simplifies the sealing structure and facilitates automated assembly.

[0016] Furthermore, a circular slot is provided at the bottom of the stationary head, which is connected to both the blood inlet and the blood outlet; an annular recessed groove is provided on the inner wall of the circular slot along the circumferential direction, and an annular protruding buckle is provided on the upper outer wall of the upper cover along the circumferential direction, and the upper outer wall of the upper cover is connected to the inner wall of the circular slot by a buckle; the end of the blood inlet in the circular slot extends to form a cylindrical assembly hole, and an annular recessed groove is also provided on the inner wall of the assembly hole along the circumferential direction; an annular protruding buckle is provided on the upper outer wall of the lower cover along the circumferential direction, and the upper outer wall of the lower cover is connected to the inner wall of the assembly hole by a buckle.

[0017] This invention improves upon the existing method of connecting the upper cover, lower cover, and stationary head via adhesive or welding by replacing it with a snap-fit ​​connection, which facilitates automated assembly and improves production efficiency.

[0018] Furthermore, the cross-section of the annular convex buckle can be semi-circular, triangular, rectangular, or other shapes, as long as it can fix the stationary head and the upper and lower covers and seal them, making it easier to assemble the upper and lower covers with the stationary head, while also ensuring good connection stability.

[0019] Furthermore, the cup body also includes a cup core, and the lower edge of the cup core that mates with the cup lid is provided with a flow opening. The liquid outlet of the blood outflow channel enters the gap between the upper cover and the lower cover along the flow opening provided along the lower edge of the cup core that mates with the cup lid.

[0020] Furthermore, the cup body also includes a conical cup core, the upper edge of which forms a flow channel with the cup body and the cup lid, and the liquid outlet of the blood outflow channel enters the gap between the upper and lower covers along the flow channel.

[0021] Furthermore, the length of the cup core is less than 1 / 2 of the cup body length, which is used to separate plasma and red blood cells. By reducing the length of the cup core or eliminating the lower half of the cup core, it is easier to automate assembly production and save production costs.

[0022] In existing plasma collection separation cups, the lid and body are usually connected at the neck of the separation cup. However, for separation cups used to collect and separate the white membrane layer (blood components such as platelets, red blood cells, and granulocytes), the cup body is connected to the bottom lid, with the connection point located at the bottom of the separation cup.

[0023] Furthermore, the conical cup core mates with the cup lid and cup body. It is used to separate plasma, the white membrane layer, and red blood cells.

[0024] Furthermore, the connection point between the cup lid and the cup body is located at the upper part of the maximum diameter of the cup body's cylindrical surface. This invention, by positioning the connection point at the upper end of the cup body's maximum diameter, can simultaneously accommodate the collection and separation of various blood components, such as plasma, platelets, red blood cells, and granulocytes. Furthermore, the cup lid and cup body are fixed together by adhesive bonding, welding, or threaded connection.

[0025] Furthermore, the lid and body are fixed together using clamps, and a soft sealing gasket is used to seal the lid and body. The clamps press the lid and body together, thus connecting and fixing them.

[0026] Furthermore, the lower end of the connection between the cup lid and the cup body contacts and positions the upper end of the cylindrical surface that mates with the centrifuge, thus determining the upper and lower positions of the cup body inside the centrifuge.

[0027] Furthermore, the cylindrical surface of the cup body matches the cylindrical surface of the centrifuge, while the conical cup core matches the cup body and the cup lid, used to separate plasma, white membrane layer (platelets, granulocytes, stem cells, etc.), and red blood cells.

[0028] Furthermore, the cylindrical surface of the cup body mates with the cylindrical surface of the centrifuge, while the cup core mates with the cup body and the cup lid, for separating plasma and red blood cells.

[0029] Furthermore, the lower end of the connection between the cup lid and the cup body contacts and positions itself on the upper end of the cylindrical surface of the centrifuge. Adjusting the height of the cup body does not change the installation height of the stationary head and the centrifuge, nor does it change the compression of the annular elastic element, that is, it does not change the clamping force between the fixed seal and the rotating seal, thus ensuring sealing performance.

[0030] Furthermore, the bottom of the cup does not contact the lower plane of the cylindrical surface of the centrifuge device it is paired with, and the height of the cup is variable. By changing the height of the cup and the conical cup core, the capacity of the separation cup can be adjusted to achieve the collection and separation of different blood volumes.

[0031] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0032] 1. The blood collection and separation device provided in this utility model improves the blood inlet and outlet of the stationary head from the horizontal direction to the vertical direction. In this way, when the separation cup is produced, after the stationary head is clamped and fixed by the production equipment, the consumable pipeline can be installed vertically downward from the top of the stationary head, making the assembly more convenient.

[0033] 2. The blood collection and separation device provided in this utility model embodiment improves the fixing clamp into an integral structure. The stationary head is clamped and fixed by the up and down movement of the fixing clamp or the flipping movement of the fixing clamp, which makes the operation more convenient and can quickly fix the stationary head.

[0034] 3. The blood collection and separation device provided in this utility model improves the existing method of connecting the upper cover, lower cover and stationary head by bonding or welding to a snap-fit ​​connection, which facilitates automated assembly and improves production efficiency;

[0035] 4. The blood collection and separation device provided in this utility model embodiment improves the original axial connection between the elastic element and the fixed seal to an end face fit, which simplifies the sealing structure and facilitates automated assembly.

[0036] 5. The blood collection and separation device provided in this embodiment of the utility model can achieve blood collection of different volumes by changing the height of the cup;

[0037] 6. The blood collection and separation device provided in this embodiment of the utility model determines the installation position of the separation cup by matching the lower end face of the connection between the cup body and the cup lid with the upper end face of the centrifuge equipment. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A schematic diagram of the structure of an existing plasma separation cup is provided as a comparative example of this utility model;

[0040] Figure 2 A schematic diagram of the structure of an existing blood component separation cup is provided as a comparative example of this utility model;

[0041] Figure 3 This is a schematic diagram of the plasma separation device provided in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the component blood separation device provided in an embodiment of the present invention;

[0043] Figure 5 This utility model Figure 3 Enlarged structural diagrams of sections I and II;

[0044] Figure 6 This utility model Figure 3 Enlarged structural diagrams of sections I and II.

[0045] The attached diagram shows the markings and corresponding component names:

[0046] 1-Stationary head, 2-Elastic element, 3-Fixed seal, 4-Rotary seal, 5-Cup lid, 6-Cup core, 7-Cup body, 8-Fixed clamp, 9-Centrifuge equipment, 10-Upper cover, 11-Lower cover, 12-Clamp, 13-Soft sealing gasket, 14-Conical cup core, 15-Bottom cover. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0048] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, well-known structures are not specifically described in order to avoid obscuring the present invention.

[0049] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0050] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0051] Comparative Example 1

[0052] like Figure 1As shown, the existing plasma separation equipment's fixing clamp 8 consists of two parts. When these two parts approach each other along directions C and D, they clamp and fix the stationary head 1 of the separation cup. The elastic element 2 is fixed on the stationary head 1 (non-rotating part), and the inner diameter of the elastic element 2 encloses the clamping and fixing seal 3. During use, the stationary head 1, elastic element 2, and fixing seal 3 do not rotate and are fixed by the fixing clamp 8. The rotating seal 4 is fixed to the cup lid 5, the cup lid 5 is fixed to the cup body 7, and the cup body 7 has a cup core fixed inside.

[0053] During operation, the cup body 7 is secured within the centrifuge device 9 of the blood separation equipment. The rotation of the centrifuge device 9 causes the cup body 7 to rotate, which in turn causes the cup core 6, cup lid 5, and rotating seal 4 to rotate. Whole blood enters the separation cup through port A, following the direction of the arrow. The stationary head 1 is fixed by the fixing clamp 8 of the blood separation equipment and cannot rotate or shake. Under the action of centrifugal force, the blood entering the cup body 7 separates into different blood components. As the amount of blood entering the cup body 7 increases, the lighter blood components flow in through the opening on the cup core 6 and continue to flow in the direction of the arrow, exiting from arrow B.

[0054] Comparative Example 2

[0055] like Figure 2 As shown, this is a separation cup used for collecting and separating platelets, red blood cells, granulocytes, etc. The shape of the cup body 7 is slightly different from that of the separation cup for collecting plasma. The connection between the cup body 7 and the bottom cover 15 is at the bottom of the separation cup.

[0056] Example

[0057] like Figure 3 As shown in the figure, a blood collection and separation device provided by this utility model includes a separation cup, which includes a cup body 7, a cup lid 5, a stationary head 1, an upper cover 10, and a lower cover 11. The blood inlet and blood outlet at the top of the stationary head 1 are both vertically arranged. The upper cover 10 and the lower cover 11 are connected to the bottom of the stationary head 1. The lower cover 11 is fitted inside the upper cover 10 and its upper end is connected to the blood inlet to form a blood inflow channel. The space between the inner walls of the upper cover 10 and the lower cover 11 is connected to the blood outlet to form a blood outflow channel. The inlet end of the blood inflow channel enters the interior of the lower cover 11 from end A, passes through the cup lid 5, and extends into the bottom of the cup body 7. The outlet end of the blood outflow channel runs along the top of the cup body, passes through the cup lid 5 at the cup mouth, enters the gap between the upper cover 10 and the lower cover 11, and then flows out through point B.

[0058] The separation cup of this invention improves the blood inlet and outlet direction of the stationary head from horizontal to vertical (e.g., ...). Figure 3(As indicated by arrows A and B), during the production of the separation cup, after the stationary head is clamped and fixed by the production equipment, the consumable tubing can be installed vertically downwards from above the stationary head, making installation more convenient. During production, automated equipment can be used for automatic assembly, eliminating the need for manual installation of consumable tubing as required by existing separation cups.

[0059] Furthermore, it also includes a fixing clamp 8, the bottom of which has a groove that matches the shape of the top of the stationary head. The fixing clamp is installed and removed from the stationary head by moving up and down or by flipping the cover. The fixing clamp 8 is an integral part that can be flipped up and down, left and right, or front and back.

[0060] The outer wall of the mating part between the stationary head 1 and the fixing clamp 8 is conical or cylindrical, and the fixing clamp 8 and the stationary head 1 are installed by the mating of the conical or cylindrical surfaces.

[0061] In existing blood separation cups, because the blood inlet and outlet of the stationary head are horizontal, the fixing clamp of the blood separation equipment usually consists of two clamps, left and right, which move relative to each other horizontally to clamp and fix the side wall of the stationary head. In this improved invention, the blood inlet and outlet of the stationary head are changed to a vertical direction, therefore the fixing clamp can also be improved into a single integral structure. Figure 3 The stationary head is clamped and fixed in the C-direction, making operation more convenient and enabling quick fixation of the stationary head.

[0062] Furthermore, the outer wall of the mating surface between the stationary head and the fixing clamp 8 is conical or cylindrical. The fixing clamp slot and the stationary head are mated and installed through the conical, cylindrical, or other similar structures. The mating surface is used to fix the stationary head 1, preventing rotation.

[0063] Furthermore, a circular elastic element 2 is provided on the lower end face of the stationary head 1, and it is sealed with the upper end face of the circular elastic element 2. A fixed seal 3 is coaxially connected to the lower end of the elastic element 2, and it is sealed with the upper end face of the fixed seal 3. A rotating seal 4 is sleeved on the outer edge of the top of the cup lid 5. The lower end face of the fixed seal 3 is attached to the upper end face of the rotating seal 4 and rotates to seal.

[0064] The existing sealing structure between the stationary head and the cup lid involves pressing an elastic element between the stationary head and the upper cover, and then connecting it with a fixed seal. This invention improves the axial connection between the original elastic element and the fixed seal to an end face fit, which simplifies the sealing structure and facilitates automated assembly.

[0065] Furthermore, a circular slot is provided at the bottom of the stationary head, which is connected to both the blood inlet and the blood outlet; an annular recessed groove is provided on the inner wall of the circular slot along the circumferential direction, and an annular protruding buckle is provided on the upper outer wall of the upper cover along the circumferential direction, and the upper outer wall of the upper cover is connected to the inner wall of the circular slot by a buckle; the end of the blood inlet in the circular slot extends to form a cylindrical assembly hole, and an annular recessed groove is also provided on the inner wall of the assembly hole along the circumferential direction, and an annular protruding buckle is also provided on the upper outer wall of the lower cover along the circumferential direction, and the upper outer wall of the lower cover is connected to the inner wall of the assembly hole by a buckle.

[0066] The existing upper cover, lower cover, and stationary head are connected by adhesive or welding processes, such as... Figure 1 As shown in Figures I and II, this utility model is improved to use a snap-fit ​​connection, as follows: Figure 3 As shown in Figures I and II, this facilitates automated assembly and improves production efficiency.

[0067] Furthermore, such as Figure 5 and Figure 6 As shown, the cross-section of the annular convex buckle is semi-circular or triangular, which makes it easier to assemble the upper cover, lower cover and stationary head, and at the same time provides good connection stability.

[0068] Furthermore, the cup body 7 also includes a cup core 6, and the lower edge of the cup core 6 that mates with the cup lid 5 is provided with a flow opening. The liquid outlet of the blood outflow channel enters the gap between the upper cover 10 and the lower cover 11 along the flow opening provided along the lower edge of the cup core 6 that mates with the cup lid 5.

[0069] Furthermore, such as Figure 4 As shown, the cup body 7 also includes a conical cup core 14. The upper edge of the conical cup core 14 forms a flow channel with the cup body 7 and the cup cover 5. The liquid outlet of the blood flow channel enters the gap between the upper cover 10 and the lower cover 11 along the flow channel. Replacing the cup core 6 with a conical cup core 14 can separate more blood components: plasma collection, platelets, red blood cells, granulocytes, etc.

[0070] Furthermore, the length of the cup core is less than 1 / 2 of the cup body length, which is used to separate plasma and red blood cells. By reducing the length of the cup core or eliminating the lower half of the cup core, it is easier to automate assembly production and save production costs.

[0071] In existing plasma collection separation cups, the lid and body are typically connected at the neck of the cup, such as... Figure 1 As shown in Figure III, the separation cup used to collect and separate blood components such as platelets, red blood cells, and granulocytes has a cup body connected to a bottom cap, with the connection point located at the bottom of the separation cup, as shown in Figure III. Figure 2 As shown in section IV.

[0072] Furthermore, the conical cup core 14 mates with the cup lid 5 and the cup body 7. This is used to separate plasma, the white membrane layer, and red blood cells.

[0073] Furthermore, the connection point between the lid 5 and the cup body 7 is located at the upper part of the maximum diameter of the cylindrical surface of the cup body. This utility model sets the connection point between the lid and the cup body at the upper end of the maximum diameter of the cup body, such as... Figure 3 , Figure 4 As shown in section III, it is applicable to the collection of various blood components, including plasma, platelets, red blood cells, and granulocytes.

[0074] Furthermore, the cup lid 5 and the cup body 7 are fixed together by adhesive bonding, welding, or threaded connection.

[0075] Furthermore, the cup lid 5 and the cup body 7 are fixed together by a clamp, and the cup lid 5 and the cup body 7 are sealed by a soft sealing gasket 13. The clamp 12 presses the cup lid 5 and the cup body 7 together, thus serving as a connection.

[0076] Furthermore, the lower end of the connection between the cup lid 5 and the cup body 7 contacts and positions the upper end of the cylindrical surface of the centrifuge device 9, determining the upper and lower positions of the cup body 7 inside the centrifuge device 9. Furthermore, the cylindrical surface of the cup body 7 mates with the cylindrical surface of the centrifuge device 9, while the conical cup core 14 mates with the cup body 7 and the cup lid 5, for separating plasma, white blood cell platelets, granulocytes, stem cells, and red blood cells.

[0077] Furthermore, the cylindrical surface of the cup body 7 mates with the cylindrical surface of the centrifuge device 9, while the cup core 6 mates with the cup body 7 and the cup lid 5, for separating plasma and red blood cells.

[0078] Furthermore, the lower end of the connection between the cup lid 5 and the cup body 7 contacts and positions itself on the upper end of the cylindrical surface of the centrifuge 9. Adjusting the height of the cup body 7 does not change the installation height of the stationary head and the centrifuge 9, nor does it change the compression of the annular elastic element 2, that is, it does not change the clamping force between the fixed seal 3 and the rotating seal 4, thus ensuring sealing performance.

[0079] Furthermore, the bottom of the cup body 7 does not contact the lower conical or flat surface of the cylindrical surface of the centrifuge device 9 that it cooperates with. The height of the cup body 7 is variable. By changing the height of the cup body 7 and the conical cup core 14, the capacity of the separation cup can be adjusted to achieve the collection and separation of different blood volumes.

[0080] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A blood collection and separation device, comprising a separation cup, said separation cup comprising a cup body (7), a cup lid (5), a stationary head (1), an upper cover (10), and a lower cover (11), characterized in that, The blood inlet and blood outlet at the top of the stationary head (1) are both vertically arranged, and the upper cover (10) and lower cover (11) are connected to the bottom of the stationary head (1); The lower cover (11) is fitted inside the upper cover and its upper end is connected to the blood inlet to form a blood inflow channel. The space between the inner wall of the upper cover (10) and the lower cover is connected to the blood outlet to form a blood outflow channel. The inlet end of the blood inflow channel extends along the inside of the lower cover (11), through the cup lid (5), and into the bottom of the cup body (7); The outlet of the blood outflow channel runs along the top of the cup body, passes through the cup lid (5) at the mouth of the cup, and enters the gap between the upper cover (10) and the lower cover (11).

2. The blood collection and separation device according to claim 1, characterized in that, It also includes a fixing clamp (8), the bottom of which has a slot that matches the shape of the top of the stationary head. The fixing clamp (8) is installed and removed from the stationary head (1) by moving up and down or by flipping the cover. The fixing clamp (8) is an integral part. The outer wall of the mating part between the stationary head (1) and the fixing clamp (8) is conical or cylindrical. The fixing clamp (8) and the stationary head (1) are installed by the mating of the conical or cylindrical surfaces.

3. The blood collection and separation device according to claim 1, characterized in that, The lower end face of the stationary head (1) is provided with a circular elastic element (2), which is sealed with the upper end face of the circular elastic element (2). The lower end of the elastic element (2) is coaxially connected with a fixed seal (3), which is sealed with the upper end face of the fixed seal (3). The outer edge of the top of the cup lid (5) is fitted with a rotating seal (4). The lower end face of the fixed seal (3) is attached to the upper end face of the rotating seal (4) and rotates to seal.

4. The blood collection and separation device according to claim 1, characterized in that, The bottom of the stationary head (1) is provided with a circular slot, which is connected to both the blood inlet and the blood outlet; The inner wall of the circular slot is provided with an annular recessed groove along the circumferential direction, and the upper outer wall of the upper cover (10) is provided with an annular protruding buckle along the circumferential direction. The upper outer wall of the upper cover (10) and the inner wall of the circular slot are connected by a buckle. The end of the blood inlet in the circular slot is extended to form an assembly hole. An annular recessed groove is also provided on the inner wall of the assembly hole along the circumferential direction. The upper outer wall of the lower cover (11) is also an annular convex buckle along the circumferential direction. The upper outer wall of the lower cover (11) is connected to the inner wall of the assembly hole by a buckle. The cross-section of the annular convex buckle is semi-circular or triangular.

5. A blood collection and separation device according to claim 1, characterized in that, The cup body (7) also includes a cup core (6). The lower edge of the cup core (6) that mates with the cup lid (5) is provided with a flow opening. The liquid outlet of the blood flow channel enters the gap between the upper cover (10) and the lower cover (11) along the flow opening provided along the lower edge of the cup core (6) that mates with the cup lid (5). The length of the cup core (6) is less than 1 / 2 of the length of the cup body (7).

6. The blood collection and separation device according to claim 1, characterized in that, The cup body (7) also includes a conical cup core (14). The upper edge of the conical cup core (14) forms a flow channel with the cup body (7) and the cup cover (5). The liquid outlet of the blood outflow channel enters the gap between the upper cover (10) and the lower cover (11) along the flow channel.

7. The blood collection and separation device according to claim 1, characterized in that, The connection point between the cup lid (5) and the cup body (7) is located at the upper part of the maximum diameter of the cylindrical surface of the cup body.

8. A blood collection and separation device according to claim 7, characterized in that, The cup lid (5) and the cup body (7) are fixed by adhesive, welding or threaded connection; or the cup lid (5) and the cup body (7) are fixed by clamp, and the cup lid (5) and the cup body (7) are sealed by soft sealing gasket (13), and the clamp (12) presses the cup lid (5) and the cup body (7) together to play a connecting and fixing role.

9. A blood collection and separation device according to claim 7, characterized in that, The lower end of the connection between the cup lid (5) and the cup body (7) contacts and positions itself on the upper end of the cylindrical surface of the centrifuge (9); The bottom of the cup body (7) does not contact the lower conical or flat surface of the cylindrical surface of the centrifuge device (9) that it is paired with.

10. A blood collection and separation device according to claim 8, characterized in that, The cylindrical surface of the cup body (7) matches the cylindrical surface of the centrifuge (9), while the conical cup core (14) matches the cup body (7) and the cup lid (5).

Images