Blood separator

Abstract

The utility model provides a blood separator which comprises a separator body and a valve. The interior of the separator body is hollow and is provided with a sealed cavity, and the cavity comprises an upper separation cavity and a lower separation cavity which are sequentially arranged from top to bottom; a blood injection hole and an exhaust hole are respectively formed in the upper separation cavity; the separator body is also connected with a connecting neck part between the upper separation cavity and the lower separation cavity, and the valve is arranged on the connecting neck part; when the valve is opened, the upper separation cavity and the lower separation cavity are communicated through the connecting neck part, and when the valve is closed, the upper separation cavity and the lower separation cavity are blocked and separated by the valve. The device is simple in structure, reasonable and effective in design and low in production cost, blood can be effectively separated by the aid of a centrifugal machine, PRP is conveniently and upwards regulated after first centrifugation, and PRP is conveniently and quickly extracted.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a blood separator. Background Technology

[0002] Blood is composed of plasma and blood cells. Blood cells include three types of cells: red blood cells, white blood cells, and platelets. When processing whole blood, exfoliating agents can be used to separate different blood components based on their varying densities, viscosities, and other properties. Currently, after centrifugation, the blood consists of, from top to bottom, a PPP layer, PRP, and RBCs. PPP is platelet-rich plasma, autologous serum, and is pale yellow. PRP is platelet-rich plasma, a milky white thin layer. RBCs are red blood cells, dark red. PRP is rich in platelets, white blood cells, and fibronectin. Platelets, after activation, can form many cytokines; white blood cells have anti-infective effects; and fibronectin acts as a scaffold for human cells. In medical treatment and cosmetic surgery, PRP is extracted, processed, and injected into specific areas of the body.

[0003] Therefore, effectively extracting PRP is a crucial step in blood separation. Existing PRP extraction structures, such as the blood separation device disclosed in CN104010672A, allow for two centrifugal separations of blood without exposure to air. However, this blood separation device has a complex design, numerous components, difficult assembly, high production costs, and a complex centrifugation process. Summary of the Invention

[0004] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a blood separator that can effectively separate blood using a centrifuge. At the same time, the structure is simple, reasonable and effective, the production cost is low and the centrifugal extraction of PRP is convenient and quick.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a blood separator, including a separator body and a valve; the separator body has a hollow, sealed chamber inside, the chamber including an upper separation chamber and a lower separation chamber arranged sequentially from top to bottom; the upper separation chamber is provided with a blood injection hole and an exhaust hole respectively; the separator body is also provided with a connecting neck corresponding to the upper separation chamber and the lower separation chamber, and the valve is provided on the connecting neck; when the valve is open, the upper separation chamber and the lower separation chamber are connected through the connecting neck, and when the valve is closed, the upper separation chamber and the lower separation chamber are blocked and separated by the valve.

[0006] In the above scheme, a separator body with an upper and lower separation chamber is used, and the upper and lower separation chambers are connected by a connecting neck. The two separation chambers are controlled by opening and closing a valve. After the first centrifugation, RBCs sink into the lower separation chamber. After closing the valve, a second centrifugation is performed, which completes the separation of PPP and RBCs in the upper separation chamber. After extracting PPP, RBCs can be extracted, completing the collection and processing of RBCs. This blood separator structure is simpler and allows for RBC extraction without exposure to air, and the extraction operation is effective and reliable.

[0007] Furthermore, the lower bottom of the separator body and the circumferential outer wall of the separator body are separate structures, that is, the lower bottom of the lower separation cavity is a separate structure relative to the circumferential inner wall of the lower separation cavity, and the outer circumferential surface of the lower bottom of the lower separation cavity is sealed to the circumferential inner wall of the lower separation cavity.

[0008] Furthermore, a piston handle protrudes from the lower end face of the separator body. Under external force, the piston handle causes the lower bottom of the separator body to move vertically relative to the circumferential inner wall of the lower separation chamber. By using the piston handle, after the first centrifugation, the lower bottom of the separator body can be moved upwards, allowing the PRP that fell into the lower separation chamber during centrifugation to be adjusted upwards and pass through the valve, placing it above the valve. This ensures that only RBCs remain in the lower separation chamber below the valve, completing the first separation operation.

[0009] Preferably, the upper separation chamber has a funnel-shaped structure, which includes a straight pipe section and a conical section. The straight pipe section is a circular pipe with the same diameter, and the conical section is a conical structure with a reduced diameter. The lower separation chamber has an inverted funnel-shaped structure.

[0010] Furthermore, in order to more clearly display the content of layered blood, the separator body is provided with several liquid level lines from top to bottom on the outer circumferential wall of the upper separation chamber. Below the lowest liquid level line is a separation mark, which is located at the junction of the straight pipe section and the conical section in the funnel-shaped structure of the upper separation chamber.

[0011] Furthermore, the separator body is made of medical-grade silicone rubber, and the separator body can be pierced with a syringe at the separation mark. After the second centrifugation, keeping the blood separator upright, the syringe can be inserted at the mark to extract the PPP from the top. After the PPP is extracted, the remaining material in the upper separation chamber is PRP, thus completing the PRP separation. A new syringe can then be used to extract the PRP from within.

[0012] Preferably, both the injection port and the vent are located on the top surface of the upper separation chamber, which is also made of medical-grade silicone rubber. Medical-grade silicone rubber is elastic, allowing the syringe needle to puncture and perform injection and subsequent extraction. After the syringe needle is withdrawn, the needle hole automatically resets, ensuring that the centrifugation operation does not affect the injection port and vent, and that plasma does not leak through these openings during centrifugation.

[0013] The beneficial effects of this utility model are that the blood separator provided by this utility model has a reasonable structural design, can effectively separate blood by centrifuging twice, and the PRP can be easily adjusted upward after the first centrifugation, making it convenient and quick to extract PRP. Moreover, the parts have a simple structure and low production cost. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the preferred embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the preferred embodiment of the present invention after the bottom is pushed upward.

[0017] In the diagram: 1. Blood injection port; 2. Vent hole; 3. Liquid level line; 4. Upper separation chamber; 5. Separation mark; 6. Connecting neck; 7. Valve; 8. Lower separation chamber; 9. Bottom; 10. Piston handle. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0019] like Figure 1 and Figure 2 The blood separator shown is the preferred embodiment of this utility model. The blood separator includes a separator body and a valve 7.

[0020] The separator body has a hollow, sealed chamber, which includes an upper separation chamber 4 and a lower separation chamber 8 arranged sequentially from top to bottom. A connecting neck 6 is provided between the separation chamber and the lower separation chamber 8, and a valve 7 is provided on the connecting neck 6. When the valve 7 is open, the upper separation chamber 4 and the lower separation chamber 8 are connected through the connecting neck 6. When the valve 7 is closed, the upper separation chamber 4 and the lower separation chamber 8 are blocked and separated by the valve 7.

[0021] In the actual design, the upper separation chamber 4 has a funnel-shaped structure, which includes a straight pipe section and a conical section. The straight pipe section has a circular pipe structure with the same diameter, and the conical section has a conical structure with a reduced diameter. The lower separation chamber 8 has an inverted funnel-shaped structure.

[0022] To effectively manage the PRP that falls into the lower separation chamber 8 after the first separation, the lower bottom 9 of the separator body is a separate structure from its circumferential outer wall. Specifically, the lower bottom 9 of the lower separation chamber 8 is a separate structure relative to its circumferential inner wall, and the outer circumferential surface of the lower bottom 9 is sealed to the circumferential inner wall. A piston handle 10 protrudes from the lower end face of the lower bottom 9. Under external force, the piston handle 10 causes the lower bottom 9 to move vertically relative to the circumferential inner wall of the lower separation chamber 8. Through the coordinated arrangement of the piston handle 10, the lower bottom 9, and the circumferential inner wall of the lower separation chamber 8, the lower bottom 9 forms a piston-like structure relative to the lower separation chamber 8. Driving the piston handle 10 with external force pushes the lower bottom 9 upwards, simultaneously propelling the centrifuged plasma above it.

[0023] like Figure 2 As shown, after the first centrifugation, the bottom 9 of the separator body is moved upward, so that the PRP that fell into the lower separation chamber 8 during centrifugation can be adjusted upward through the valve 7 and placed above the valve 7. This causes the PRP to be adjusted upward into the upper separation chamber 4 above the valve 7, and the lower separation chamber 8 below the valve 7 contains only RBC, thus completing the first separation operation.

[0024] In this embodiment, the separator body has several liquid level lines 3 arranged sequentially from top to bottom on the outer wall of the upper separation chamber 4. Below the lowest liquid level line 3 is a separation mark 5, located at the junction of the straight and conical sections in the funnel-shaped structure of the upper separation chamber 4. The separator body is made of medical-grade silicone rubber, and the location of the separator body corresponding to the separation mark 5 can be punctured by a syringe. Since the contents of PPP, PRP, and RBC in plasma are roughly determined, the volume of the three strata can be roughly predicted when quantitatively extracting plasma for separation. Therefore, the separation mark 5 can be pre-positioned based on this data, and the liquid level line 3 can be drawn above it.

[0025] During manufacturing, the separator body is preferably made of medical-grade silicone rubber. Based on this, an injection port 1 and a vent port 2 are provided on the upper surface of the upper separation chamber 4. The medical-grade silicone rubber is elastic, allowing the syringe needle to puncture and perform injection and subsequent extraction. After the syringe needle is withdrawn, the needle hole automatically resets, ensuring a basic seal within the separator chamber and preventing centrifugation from affecting the injection port 1 and vent port 2. During centrifugation, plasma will not leak out through the injection port 1 and vent port 2.

[0026] Using the blood separator described above, the specific operation for separating and extracting PRP is as follows: 1. Inject plasma through injection port 1. During injection, vent port 2 effectively vents air to balance the pressure inside and outside the separator. After injection, the blood separator is centrifuged for the first time. 2. After the first centrifugation, external force pushes piston handle 10, causing the bottom 9 of the separator body to move upward, simultaneously pushing RBC and PRP upward. At this time, valve 7 opens. When the PRP compartment is positioned above valve 7, valve 7 is closed. At this time, the dividing line between PRP and PPP is at the marked position. 3. Place the separator in the centrifuge for a second centrifugation. 4. After the second centrifugation, keep the separator upright, pierce the separation mark 5 with the syringe needle, and begin to extract the PPP supernatant above the separation mark 5. 5. After extracting the PPP supernatant, only PRP remains in the upper separation chamber 4. Replace with another syringe and extract PRP from the upper chamber. This completes the separation and extraction of PRP.

[0027] It should be noted that in step 5, when extracting PRP, the PRP still needs to be mixed evenly before extraction.

[0028] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A blood separator, characterized in that: Includes the separator body and valves (7); The separator body has a hollow, sealed chamber inside, which includes an upper separation chamber (4) and a lower separation chamber (8) arranged sequentially from top to bottom. The upper separation chamber (4) is provided with a blood injection port (1) and an exhaust port respectively; The separator body is also provided with a connecting neck (6) between the upper separation chamber (4) and the lower separation chamber (8), and the valve (7) is provided on the connecting neck (6); when the valve (7) is open, the upper separation chamber (4) and the lower separation chamber (8) are connected through the connecting neck (6), and when the valve (7) is closed, the upper separation chamber (4) and the lower separation chamber (8) are blocked and separated by the valve (7).

2. The blood separator as described in claim 1, characterized in that: The lower bottom (9) of the separator body and the circumferential outer wall of the separator body are separate structures, that is, the lower bottom (9) of the lower separation cavity (8) is a separate structure relative to the circumferential inner wall of the lower separation cavity (8), and the outer circumferential surface of the lower bottom (9) of the lower separation cavity (8) is sealed to the circumferential inner wall of the lower separation cavity (8).

3. The blood separator as described in claim 1, characterized in that: The lower end face of the lower bottom (9) of the separator body also has a piston handle (10) protruding out. Under the action of external force, the piston handle (10) drives the lower bottom (9) of the separator body to move vertically relative to the circumferential inner wall of the lower separation chamber (8).

4. The blood separator as described in claim 1, characterized in that: The upper separation chamber (4) has a funnel-shaped structure, which includes a straight pipe section and a conical section. The straight pipe section has a circular pipe structure with the same diameter, and the conical section has a conical structure with a reduced diameter. The lower separation chamber (8) has an inverted funnel-shaped structure.

5. The blood separator as described in claim 1, characterized in that: The separator body has several liquid level lines (3) arranged sequentially from top to bottom on the outer circumferential wall of the upper separation chamber (4). Below the lowest liquid level line (3) is a separation mark (5). The separation mark (5) is located at the junction of the straight pipe section and the conical section in the funnel-shaped structure of the upper separation chamber (4).

6. The blood separator as described in claim 5, characterized in that: The separator body is made of medical silicone rubber, and the separator body can be punctured by a syringe at the position corresponding to the separation mark (5).

7. The blood separator as described in claim 6, characterized in that: The blood injection hole (1) and the vent hole (2) are both located on the top surface of the upper separation cavity (4), and the top surface of the upper separation cavity (4) is also made of medical silicone rubber.

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