An auxiliary sampling device for fat centrifugation

Abstract

The utility model relates to centrifugal separation equipment technical field, and to the existing fat centrifugal separation processing, the problem that the fat mixed with upper clear liquid in the fat extraction is easy to appear when extracting lower layer fat, specifically discloses a kind of auxiliary sampling device for fat centrifugation, including centrifugal tube and the auxiliary sampling tube that can be erected in the inner side wall of the centrifugal tube, the bottom of the auxiliary sampling tube is inserted into the inner bottom of the centrifugal tube, and the bottom of the auxiliary sampling tube is equipped with detachable connection's partition sheet;The inner diameter of the auxiliary sampling tube can accommodate extraction needle tube, and the extraction needle tube can pass through the auxiliary sampling tube and be inserted into the inner bottom of the centrifugal tube.Before centrifugation, first install auxiliary sampling tube in centrifugal tube, and partition sheet can separate the inner cavity of auxiliary sampling tube and sample liquid, after centrifugation, again, sampling needle tube passes through partition sheet, and the bottom fat is extracted, which can avoid mixing upper clear liquid in fat during extraction.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal separation equipment technology, and more specifically, to an auxiliary sampling device for fat centrifugation. Background Technology

[0002] In clinical medical procedures or biological experiments such as fat grafting surgery, adipose tissue undergoes stratification after centrifugation. The upper layer is typically a clear liquid containing oil and water, known as the supernatant, while the lower layer is a concentrated layer of fat cells, known as the lower fat layer. A relatively clear interface exists between the two layers. The lower fat layer, rich in active fat cells, is a key target for clinical transplantation or experimental analysis and must be extracted.

[0003] Currently, existing technologies for extracting the lower layer of fat after centrifugation mainly rely on manual syringe operation: the operator holds the syringe, inserts the needle into the top of the centrifuge tube, judges the insertion depth based on experience to align with the fat layer, and then obtains the fat through aspiration. Furthermore, existing technologies provide further tools for this extraction operation. For example, patent CN106000500A provides a centrifuge tube that facilitates liquid collection. By pre-setting suction tubes of different lengths within the tube, sampling of the layered liquid after centrifugation can be achieved. Using fixed-length suction tubes to locate different liquid layers simplifies the sampling operation to some extent.

[0004] However, existing extraction procedures for fat after centrifugation, as described above, have the following technical problems:

[0005] (1) Insufficient precision of manual extraction: The interface between the fat layer and the clear fluid layer is easily disturbed by needle insertion, changes in aspiration pressure, etc., which can lead to mixing. Operators rely solely on experience to judge the insertion depth, making it difficult to accurately control the needle to remain within the fat layer. This can easily result in the upper clear fluid being aspirated, reducing the purity of the fat and affecting the accuracy of subsequent clinical applications or experimental results.

[0006] (2) Poor adaptability of existing auxiliary devices: Although the centrifuge tubes proposed in the above-mentioned existing technologies use fixed-length suction tubes to position the liquid layer, the layer thickness after fat centrifugation is greatly affected by individual sample differences and centrifugation parameters. Fixed-length suction tubes cannot adapt to changes in fat layer thickness under different scenarios, and there are still obvious problems of suction end crossing the interface and mixing in clear liquid.

[0007] (3) The extraction operation is prone to secondary mixing: the negative pressure generated when inserting the needle into the lower layer of fat or when aspirating will disturb the interface, causing the originally clear separation of layers to become blurred, that is, secondary mixing occurs, which further increases the difficulty of fat extraction after separation.

[0008] Based on the above situation, there is an urgent need for a fat centrifugation separation and sampling device that can fully maintain the purity of fat samples. Utility Model Content

[0009] The purpose of this invention is to solve the problem that, after existing fat centrifugation processes, the extracted fat often contains supernatant. This application provides an auxiliary sampling device for fat centrifugation, which, through an auxiliary sampling tube and a separator at the bottom of the auxiliary sampling tube, pre-forms an aspiration channel for the extraction needle before the separation is completed, and ensures that the aspiration channel remains free of supernatant.

[0010] This utility model is achieved through the following technical solution:

[0011] This utility model provides an auxiliary sampling device for fat centrifugation, including a centrifuge tube and an auxiliary sampling tube that can be mounted on the inner wall of the centrifuge tube. The bottom of the auxiliary sampling tube extends into the inner bottom of the centrifuge tube, and a detachable partition is provided at the bottom of the auxiliary sampling tube. The inner diameter of the auxiliary sampling tube can accommodate an extraction needle, and the extraction needle can pass through the auxiliary sampling tube and extend into the inner bottom of the centrifuge tube.

[0012] Preferably, the centrifuge tube has a groove ring at its top open end, the outer wall of the groove ring is closely attached to the inner wall of the centrifuge tube, and the outer wall of the auxiliary sampling tube can abut against the inner ring wall of the groove ring.

[0013] Preferably, the centrifuge tube is equipped with a cap, and the cap is connected to the centrifuge tube by a connecting strap, the two ends of which are respectively connected to an outer side wall of the top of the centrifuge tube and a side wall of the cap.

[0014] Preferably, the slot ring is located on the side of the centrifuge tube away from the connecting strip.

[0015] Preferably, the separator includes a substrate and a snap-fit ​​block disposed on the surface of the substrate, the snap-fit ​​block being detachably snapped into the port of the auxiliary sampling tube.

[0016] Preferably, the film can cover the open end of the auxiliary sampling tube, and the snap-fit ​​block can abut against the inner wall of the opening of the auxiliary sampling tube.

[0017] Preferably, the separator is a thin film, and the outer periphery of the separator can be sealed to the outer wall of the port of the auxiliary sampling tube.

[0018] The technical solution of this utility model has the following beneficial effects:

[0019] This utility model discloses an auxiliary sampling device for fat centrifugation. Before centrifugation, an auxiliary sampling tube is installed inside the centrifuge tube, and a separator separates the inner cavity of the auxiliary sampling tube from the sample liquid, forming a temporarily independent space to ensure that the inner cavity of the auxiliary sampling tube is always free of supernatant. After centrifugation, the sampling needle is passed through the separator to extract the fat from the bottom. This achieves the pre-formation of the suction channel for the extraction needle before the separation is completed, and keeps the suction channel free of supernatant, thus avoiding the presence of supernatant in the fat during extraction. The operation is simple and convenient, and the extracted fat is of high purity. Attached Figure Description

[0020] Figure 1 This is a partial cross-sectional view of the auxiliary sampling device for fat centrifugation in this utility model.

[0021] Figure 2 for Figure 1 A magnified structural diagram of part A in the diagram;

[0022] Figure 3 This is a top view of the centrifuge tube in this utility model.

[0023] Figure 4 for Figure 1 A magnified schematic diagram of part A in the diagram (the separator is a thin film).

[0024] Reference numerals: 1-centrifuge tube, 11-slot ring, 12-connecting strap, 2-auxiliary sampling tube, 3-segmenter, 31-base plate, 32-clamping block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below. Where specific conditions are not specified in the embodiments, they are performed under conventional conditions or conditions recommended by the manufacturer; where the manufacturers of instruments, equipment, reagents, or raw materials are not specified, they are all conventional products that can be purchased commercially.

[0026] The following is a detailed embodiment with reference to the accompanying drawings.

[0027] like Figures 1 to 3 As shown, this utility model provides an auxiliary sampling device for fat centrifugation, including a centrifuge tube 1 and an auxiliary sampling tube 2 that can be mounted on the inner wall of the centrifuge tube 1. The bottom of the auxiliary sampling tube 2 extends into the inner bottom of the centrifuge tube 1, and a detachable separator 3 is provided at the bottom of the auxiliary sampling tube 2. The inner diameter of the auxiliary sampling tube 2 can accommodate an extraction needle, and the extraction needle can pass through the auxiliary sampling tube 2 and extend into the inner bottom of the centrifuge tube 1.

[0028] In this embodiment, a groove ring 11 is provided at the top open end of the centrifuge tube 1. The outer side wall of the groove ring 11 is closely attached to the inner side wall of the centrifuge tube 1, and the outer side wall of the auxiliary sampling tube 2 can abut against the inner ring wall of the groove ring 11.

[0029] In this embodiment, the centrifuge tube 1 is equipped with a tube cap, and the tube cap is connected to the centrifuge tube 1 by a connecting strap 12. The two ends of the connecting strap 12 are respectively connected to an outer side wall of the top of the centrifuge tube 1 and a side wall of the tube cap; the slot ring 11 is located on the side of the centrifuge tube 1 away from the connecting strap 12.

[0030] In this embodiment, the separator 3 includes a base sheet 31 and a snap-fit ​​block 32 disposed on the surface of the base sheet 31. The base sheet 31 and the snap-fit ​​block 32 are integrally formed. The snap-fit ​​block 32 is detachably snapped into the opening of the auxiliary sampling tube 2. Specifically, the base sheet 31 can cover the open end of the auxiliary sampling tube 2, and the snap-fit ​​block 32 can abut against the inner wall of the opening of the auxiliary sampling tube 2. In addition, those skilled in the art can also choose to set the separator 3 as a film made of medical materials (such as...). Figure 4 As shown in the figure, the outer periphery of the separator 3 can be sealed to the outer wall of the port of the auxiliary sampling tube 2.

[0031] When using the auxiliary sampling device for fat centrifugation in this embodiment for centrifugation and sampling, before centrifugation, the auxiliary sampling tube 2 is installed inside the centrifuge tube 1, and the separator 3 can separate the inner cavity of the auxiliary sampling tube 2 from the sample liquid, forming a temporarily independent space to ensure that the inner cavity of the auxiliary sampling tube 2 is always free of supernatant liquid; after centrifugation, the sampling needle is passed through the separator 3 to extract the fat at the bottom, so as to pre-form the suction channel of the extraction needle before the separation is completed, and keep the suction channel free of supernatant liquid, thus avoiding the presence of supernatant liquid in the fat during extraction, and the operation is simple and convenient, and the purity of the extracted fat is high.

[0032] If the separator 3 consists of a substrate 31 and a snap-fit ​​block 32, it is best to inject the sample solution into the centrifuge tube 1 first, and then insert the auxiliary sampling tube 2. This ensures that the separator 3 maintains its sealing effect on the auxiliary sampling tube 2 under the water pressure of the sample solution. If the separator 3 is a membrane, it is best to insert the auxiliary sampling tube 2 first, and then inject the sample solution to avoid potential membrane damage due to the water pressure of the sample solution. Of course, those skilled in the art can also choose other structures or materials that can achieve initial sealing of the auxiliary sampling tube 2 and allow the extraction needle to pass through as the separator 3, to achieve the same effect.

[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An auxiliary sampling device for fat centrifugation, characterized in that, It includes a centrifuge tube (1) and an auxiliary sampling tube (2) that can be mounted on the inner wall of the centrifuge tube (1). The bottom of the auxiliary sampling tube (2) extends into the inner bottom of the centrifuge tube (1), and the bottom of the auxiliary sampling tube (2) is provided with a detachable partition (3). The inner diameter of the auxiliary sampling tube (2) can accommodate the extraction needle, and the extraction needle can pass through the auxiliary sampling tube (2) and extend into the bottom of the centrifuge tube (1).

2. The auxiliary sampling device for fat centrifugation according to claim 1, characterized in that, The centrifuge tube (1) has a slotted ring (11) at its top open end. The outer side wall of the slotted ring (11) is closely attached to the inner side wall of the centrifuge tube (1), and the outer side wall of the auxiliary sampling tube (2) can abut against the inner ring wall of the slotted ring (11).

3. The auxiliary sampling device for fat centrifugation according to claim 2, characterized in that, The centrifuge tube (1) is equipped with a tube cap, and the tube cap is connected to the centrifuge tube (1) by a connecting strap (12). The two ends of the connecting strap (12) are respectively connected to an outer side wall of the top of the centrifuge tube (1) and a side wall of the tube cap.

4. The auxiliary sampling device for fat centrifugation according to claim 3, characterized in that, The slot ring (11) is located on the side of the centrifuge tube (1) away from the connecting strip (12).

5. The auxiliary sampling device for fat centrifugation according to any one of claims 1 to 4, characterized in that, The separator (3) includes a substrate (31) and a snap-fit ​​block (32) disposed on the surface of the substrate (31). The snap-fit ​​block (32) is detachably snapped into the port of the auxiliary sampling tube (2).

6. The auxiliary sampling device for fat centrifugation according to claim 5, characterized in that, The substrate (31) can cover the open end of the auxiliary sampling tube (2), and the snap-fit ​​block (32) can abut against the inner wall of the opening of the auxiliary sampling tube (2).

7. The auxiliary sampling device for fat centrifugation according to any one of claims 1 to 4, characterized in that, The separator (3) is a thin film, and the outer periphery of the separator (3) can be sealed to the outer wall of the port of the auxiliary sampling tube (2).

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