A new type of buoy suspension type platelet-rich plasma separation and extraction device

Abstract

The utility model provides a novel buoy suspension type platelet rich plasma separation and extraction device, including separation test tube, the upper portion detachable installation of separation test tube has the pipe cover, the inside fixed mounting of pipe cover has the air pipe and the liquid suction pipe, every air pipe's upper end all fixed mounting has the gas valve, every liquid suction pipe's upper end all has the pipe plug, the inside installation of separation test tube has buoy assembly. The utility model discloses the body, air bag, catheter, limit strip, connecting joint, extraction pipe, connecting pipe, first gas pipe, second gas pipe, the third gas pipe's setting is favorable to avoid the situation of the extraction to contain red blood cell plasma due to the sway of buoy body or the skew of separation test tube.

Description

Technical Field

[0001] This invention belongs to the field of blood sampling technology, and in particular relates to a novel buoy-suspended platelet-rich plasma separation and extraction device. Background Technology

[0002] The buoy-suspended platelet-rich plasma (PRP) separation and extraction device is used to extract PRP from blood. Currently available buoy-suspended PRP separation and extraction devices include a top cover, a tube, a suction tube, a first buoy, a second buoy, and a buoy conduit. Two buoys of different densities are installed inside the tube. After centrifugation, the plasma separates into three layers by the two buoys, with PRP located between the two buoys. The PRP can be extracted to the outside of the tube through the buoy conduit and the suction tube. However, the buoys in this device are located inside the tube but have gaps or connecting holes. This means that if the buoys shake or the separation tube is tilted after stratification, it is easy to extract PRP containing red blood cells. Furthermore, because the upper buoy can rotate, the suction tube is prone to twisting during centrifugation, potentially leading to its rupture. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a novel buoy-suspended platelet-rich plasma separation and extraction device, which avoids the extraction of red blood cell-containing plasma due to buoy shaking or tilting of the separation test tube, and also avoids damage to the internal pipeline.

[0004] This utility model is achieved through the following technical solution: A novel buoy-suspended platelet-rich plasma separation and extraction device includes a separation test tube with a detachable cap at the top. An air extraction tube and a liquid extraction tube are fixedly installed inside the cap. Each air extraction tube has an air valve fixedly installed at its upper end, and each liquid extraction tube has a plug at its upper end. A buoy assembly is installed inside the separation test tube. The buoy assembly includes two buoy bodies, one above the other, with an airbag fixedly installed on the outside of each buoy body. A conduit is fixedly installed at the upper end of the lower buoy body, with limit strips integrated on both sides of the conduit. The upper buoy body is slidably disposed outside the conduit body, with a connecting connector fixedly installed at its upper end. An extraction tube is fixedly installed between the connecting connector and the lower end of one of the liquid extraction tubes. A connecting tube is fixedly installed inside the upper buoy body.

[0005] Preferably, two air extraction pipes are provided.

[0006] Preferably, the liquid extraction tube is provided with at least three tubes.

[0007] Preferably, a first air tube is fixedly installed at the lower end of the connecting tube and at the inflation / deflation port of the airbag located on the lower side.

[0008] Preferably, a third air pipe is fixedly installed between the upper end of the connecting pipe and the lower end of one of the air extraction pipes.

[0009] Preferably, a second air pipe is fixedly installed between the inflation / deflation port of the airbag on the upper side and the other air extraction pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In this utility model, the arrangement of the buoy body, air bladder, conduit, limiting strip, connecting joint, extraction tube, connecting tube, first air tube, second air tube, and third air tube helps to avoid the situation where blood plasma containing red blood cells is extracted due to the shaking of the buoy body or the tilting of the separation test tube.

[0011] 2. In this utility model, the design of the air extraction pipe and the air valve is beneficial for sealing the airbag. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of the buoy assembly of this utility model.

[0014] In the picture: 1. Separation tube; 2. Tube cap; 21. Air extraction tube; 22. Liquid extraction tube; 23. Air valve; 24. Tube plug; 3. Buoy assembly; 31. Buoy body; 32. Air bladder; 33. Guide tube; 34. Limiting strip; 35. Connecting joint; 36. Extraction tube; 37. Connecting tube; 38. First air tube; 39. Second air tube; 310. Third air tube. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings. As shown in Figure 1, a novel buoy-suspended platelet-rich plasma separation and extraction device includes a separation test tube 1. A cap 2 is detachably installed on the upper part of the separation test tube 1. The detachable installation method is threaded installation or plug installation. An air extraction tube 21 and a liquid extraction tube 22 are fixedly installed through the inside of the cap 2. An air valve 23 is fixedly installed at the upper end of each air extraction tube 21. A tube plug 24 is plugged into the upper end of each liquid extraction tube 22. A buoy assembly 3 is installed inside the separation test tube 1.

[0016] In this implementation plan, in conjunction with the appendix Figure 2As shown, the buoy assembly 3 includes two buoy bodies 31 arranged vertically. Airbags 32 are fixedly installed on the exterior of both buoy bodies 31. A conduit 33 is fixedly installed at the upper end of the lower buoy body 31. Limiting strips 34 are integrally provided on both sides of the conduit 33. The upper buoy body 31 is slidably disposed outside the conduit 33. A connecting connector 35 is fixedly installed at the upper end of the conduit 33. An extraction tube 36 is fixedly installed between the connecting connector 35 and the lower end of one of the extraction tubes 22. A connecting tube 37 is fixedly installed through the interior of the upper buoy body 31. After centrifugation and stratification, the buoy body 31 separates the stratified blood. At this time, the user opens the tube plug 24. The lower and upper airbags 32 are inflated sequentially through an external inflation device. The first air tube 38, the second air tube 39, and the third air tube 310 connect the air passages. After the airbags 32 are inflated, the float 31 is fixed to the separation tube 1, thereby separating the stratified blood and preventing the extraction of blood plasma containing red blood cells due to the shaking of the float 31 or the tilting of the separation tube 1. In addition, the limiting strip 34 limits the upper float 31, so that the upper float 31 can only move up and down during centrifugation and will not rotate, thus avoiding damage to the extraction tube 36, the second air tube 39, and the third air tube 310 caused by rotation.

[0017] In this embodiment, specifically, two extraction pipes 21 are provided.

[0018] In this embodiment, specifically, at least three liquid extraction tubes 22 are provided.

[0019] In this embodiment, specifically, a first air tube 38 is fixedly installed at the lower end of the connecting tube 37 and at the inflation / deflation port of the airbag 32 located on the lower side.

[0020] In this embodiment, specifically, a third air pipe 310 is fixedly installed between the upper end of the connecting pipe 37 and the lower end of one of the air extraction pipes 21.

[0021] In this embodiment, specifically, a second air pipe 39 is fixedly installed between the inflation / deflation port of the upper airbag 32 and the other air extraction pipe 21.

[0022] In this embodiment, specifically, the extraction tube 36, the first air tube 38, the second air tube 39, and the third air tube 310 are all telescopic tubes.

[0023] In this embodiment, specifically, the buoy body 31 and the airbag set on the lower side are located between platelet-rich plasma and red blood cell-containing plasma after centrifugation and stratification, and the buoy body 31 and the airbag set on the lower side are located between platelet-anemic plasma and platelet-rich plasma after centrifugation and stratification, thereby selecting suitable materials and densities for the buoy body 31 and the airbag 32. The lower end of the catheter 33 is provided with a through hole for extracting platelet-rich plasma.

[0024] Working principle

[0025] In this invention, before use, the user puts the blood to be processed into the separation test tube 1 and then covers it with the tube cap 2 and the tube stopper 24. The separation test tube 1 is then placed in an external centrifuge for centrifugation, causing the blood to separate into layers. After separation, the user uses an external needle to extract platelet-rich plasma through the liquid extraction tube 22 and the air extraction tube 36.

[0026] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution of this utility model, falls within the protection scope of this utility model.

Claims

1. A novel buoy-suspended platelet-rich plasma separation and extraction device, characterized in that, The novel buoy-suspended platelet-rich plasma separation and extraction device includes a separation test tube (1), with a detachable cap (2) installed on the upper part of the separation test tube (1). An air extraction tube (21) and a liquid extraction tube (22) are fixedly installed inside the cap (2). An air valve (23) is fixedly installed at the upper end of each air extraction tube (21), and a plug (24) is inserted at the upper end of each liquid extraction tube (22). A buoy assembly (3) is installed inside the separation test tube (1). The buoy assembly (3) includes two buoy bodies (31) arranged vertically. (31) is fixedly installed with airbags (32) on the outside. The upper end of the buoy body (31) on the lower side is fixedly installed with a conduit (33). Limiting strips (34) are integrated on both sides of the conduit (33). The buoy body (31) on the upper side is slidably installed outside the conduit (33). The upper end of the conduit (33) is fixedly installed with a connecting joint (35). A suction tube (36) is fixedly installed between the connecting joint (35) and the lower end of one of the suction tubes (22). A connecting tube (37) is fixedly installed through the interior of the buoy body (31) on the upper side.

2. The novel buoy-suspended platelet-rich plasma separation and extraction device as described in claim 1, characterized in that, There are two exhaust pipes (21).

3. The novel buoy-suspended platelet-rich plasma separation and extraction device as described in claim 1, characterized in that, The described liquid extraction tube (22) is provided with at least three.

4. The novel buoy-suspended platelet-rich plasma separation and extraction device as described in claim 1, characterized in that, The lower end of the connecting tube (37) is fixedly installed with the inflation / deflation port of the airbag (32) provided on the lower side, and a first air tube (38) is fixedly installed thereon.

5. The novel buoy-suspended platelet-rich plasma separation and extraction device as described in claim 1, characterized in that, A third air pipe (310) is fixedly installed between the upper end of the connecting pipe (37) and the lower end of one of the air extraction pipes (21).

6. The novel buoy-suspended platelet-rich plasma separation and extraction device as described in claim 1, characterized in that, A second air pipe (39) is fixedly installed between the inflation / deflation port of the airbag (32) on the upper side and another air extraction pipe (21).

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