Novel sampler

Abstract

The utility model relates to a novel sampler, which effectively solves the problems of inaccurate sample size, inaccurate result and the like caused by the fact that blood directly rushes to the top end of a sampling cap and detection personnel cannot clearly see a sampled liquid level line. Comprising a sampler inserted in a buffer tube, a sampling cap is clamped to the top of the sampler, the sampler comprises a detection part and a handheld part, the handheld part is located above the detection part and is coaxially arranged with the detection part, the detection part comprises a sampling needle, a side plate is fixed to the sampling needle, and the handheld part comprises a handheld cylinder with an opening in the upper end; the blood sampling cap is ingenious in structure and convenient to use, through the arrangement of the buffer groove, the baffle and the like, when blood passes through the buffer groove, impact force carried by the blood is partially released, the buffer groove is matched with the baffle, the purpose of pressure relief can be achieved, and the problems that the blood directly rushes to the top end of the sampling cap, and detection personnel cannot see a liquid level line clearly are solved; and in cooperation with the arrangement of a fence, the pollution problem of blood splashing is avoided.

Description

Technical Field

[0001] This utility model relates to the field of liquid sampler technology, and in particular to a novel sampler. Background Technology

[0002] With the development of the in vitro diagnostics and medical industry, in vitro diagnostic technology is constantly advancing, and the blood volume required for in vitro diagnostic reagent testing is decreasing. Many products are now compatible with capillary blood samples. To keep pace with the development of in vitro diagnostic reagents and meet the needs of clinical departments, various micro-samplers have appeared on the market. However, these micro-samplers have various defects, posing risks of contamination and causing various inconveniences for laboratory medical staff. Problems with marketed micro-samplers include:

[0003] 1. During the process of inserting the sampler into the sample buffer tube, due to the pressure difference between the inside of the tube and the outside, blood may rush directly to the top of the sampling cap, making it difficult for the testing personnel to see the liquid level line of the sample, thus causing problems such as inaccurate sample volume and inaccurate results.

[0004] 2. Blood splattering occurred during the insertion of the sampler into the sample buffer tube, causing contamination and inconvenience to the operator. Utility Model Content

[0005] To address the above problems, this invention provides a novel sampler that solves issues such as sampler detection accuracy.

[0006] The technical solution is as follows: This utility model includes a sampler inserted into a buffer tube, a sampling cap snapped onto the top of the sampler, the sampler including a detection part and a handheld part, the handheld part being located above the detection part and coaxially arranged with it, the detection part including a sampling needle, a side plate fixed on the sampling needle, the handheld part including a handheld tube with an opening at the top, an annular strip coaxially fixed on the handheld tube, the sampling cap being coaxially arranged with the handheld tube and one end of the sampling cap contacting the annular strip, a guide tube coaxially fixed inside the handheld tube, and the guide tube communicating with the sampling needle;

[0007] The sampling needle and side plate are equipped with a buffer structure to reduce the pressure of liquid entering the sampling cap.

[0008] The buffer structure includes a side plate and a buffer groove on the sampling needle. A baffle is fixed inside the buffer groove, and a through hole is opened in the baffle. The diameter of the through hole is the same as the inner diameter of the sampling needle.

[0009] The bottom of the handheld part is coaxially fixed with a baffle, which is funnel-shaped and its lower edge is located above the sampling needle.

[0010] The buffer structure includes a sampling needle and an arc-shaped tube fixed on the side plate. A cavity is formed inside the arc-shaped tube, and a buffer block is fixed inside the cavity.

[0011] The cross-section of the buffer block is elliptical, semi-elliptical, or conical.

[0012] The bottom of the buffer block has an inlet hole along its axial direction, and the buffer block has a plurality of circumferentially distributed distributing holes radially distributed on it. The diameter of the inlet hole is larger than the diameter of the distributing holes, and the plurality of distributing holes are connected to the inlet hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. With the addition of buffer tanks and baffles, the impact force carried by blood is partially released when it passes through the buffer tank. The buffer tank, together with the baffle, can achieve the purpose of depressurization, preventing blood from rushing directly to the top of the sampling cap and causing the testing personnel to not be able to see the liquid level line. With the addition of the enclosure, there will be no problem of blood splashing and contamination.

[0015] 2. Through the design of the arc-shaped tube, cavity and buffer block, when blood enters the cavity, it will first come into contact with the buffer block, and the impact force it carries will be offset. When the blood comes out from the guide tube, it will slowly fill the sampling cap.

[0016] 3. With the inlet hole and multiple outlet holes, when blood enters the cavity, some blood enters directly into the inlet hole and is discharged through the outlet holes, while the other part of the blood flows along the outer surface of the buffer block. At this time, the blood discharged from the outlet holes collides with this part of the blood, further improving the buffering effect. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is a schematic diagram of the buffer groove and baffle in this utility model.

[0019] Figure 3 This is a cross-sectional view of the baffle in this utility model.

[0020] Figure 4 This is a schematic diagram of the arc-shaped tube in this utility model.

[0021] Figure 5 This is a schematic diagram of the arc-shaped tube and connector in this utility model.

[0022] Figure 6 This is a schematic diagram of the liquid inlet and liquid distribution hole in this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Sampling cap; 2. Detection section; 3. Sampling needle; 4. Side plate; 5. Handheld tube; 6. Annular strip; 7. Lead tube; 8. Buffer tank; 9. Baffle; 10. Through hole; 11. Enclosure; 12. Arc tube; 13. Buffer block; 14. Liquid inlet; 15. Dispensing hole; 16. Buffer tube. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Depend on Figures 1 to 3 Provided is a sampler inserted into a buffer tube 16, with a sampling cap 1 snapped onto the top of the sampler. The sampling cap 1, sampler, and the main body of the buffer tube 16 are all made of plastic and are disposable. A sealing paper is provided at the top of the buffer tube 16, and the internal pressure is greater than the external atmospheric pressure. In use, the testing personnel simply insert the sampler directly into the buffer tube 16. During insertion, the liquid inside the buffer tube 16 passes through the sampler and enters the sampling cap 1. The sampler includes a detection part 2 and a handle. The handle is located above and coaxially with the detection part 2. The detection part 2 includes a sampling needle 3, which may be a straight tube or... The sampler has a sharp, needle-like tip. In this embodiment, it is a straight tube. A side plate 4 is fixed on the sampling needle 3. When the sampler is inserted into the buffer tube 16, the side plate 4 is also inserted into the buffer tube 16. Its main function is to improve the stability of the sampler. The handheld part includes a handheld tube 5 with an open top. An annular strip 6 is coaxially fixed on the handheld tube 5. The sampling cap 1 is coaxially arranged with the handheld tube 5 and one end of the sampling cap 1 contacts the annular strip 6. An arc-shaped surface is formed on the outer wall of the handheld tube 5, so that the testing personnel can directly hold it in the area of ​​the arc-shaped surface. A guide tube 7 is coaxially fixed inside the handheld tube 5. The guide tube 7 is connected to the sampling needle 3 and has a conical structure.

[0027] Considering that during the process of inserting the sampler into the sample buffer tube, due to the pressure difference between the inside of the tube and the outside, blood may rush directly to the top of the sampling cap 1, making it difficult for the testing personnel to see the liquid level line, thus causing inaccurate sample volume and results, the sampling needle 3 and the side plate 4 are equipped with a buffer structure to reduce the pressure of liquid entering the sampling cap 1.

[0028] Example 1:

[0029] refer to Figure 2 and Figure 3 As shown, to further supplement the buffer structure, the buffer structure includes a buffer groove 8 opened on the side plate 4 and the sampling needle 3. The buffer groove 8 forms a pressure relief area. A baffle 9 is fixed in the buffer groove 8. A through hole 10 is opened in the baffle 9. The diameter of the through hole 10 is the same as the inner diameter of the sampling needle 3. With the buffer groove 8 and the baffle 9, when blood passes through the buffer groove 8, the impact force it carries is partially released. The buffer groove 8, together with the baffle 9, can achieve the purpose of pressure relief, avoiding the problem that blood directly rushes to the top of the sampling cap 1, causing the testing personnel to not be able to see the liquid level line.

[0030] refer to Figure 1 As shown, considering that when the blood is depressurized, the blood will splash outward when it hits the baffle 9, which may cause contamination, a baffle 11 is coaxially fixed at the bottom of the handheld part. The baffle 11 is funnel-shaped and its lower edge is located above the sampling needle 3. With the setting of the baffle 11, the splashed blood will be blocked by the baffle 11 and there will be no problem of blood splashing contamination.

[0031] Example 2:

[0032] refer to Figures 4 to 5 As shown, considering the use of a buffer groove 8, baffle 9 and enclosure 11, the enclosure 11 will affect the insertion process of the sampler and make it inconvenient to use. The buffer structure includes a sampling needle 3 and an arc-shaped tube 12 fixed on the side plate 4. A cavity is formed inside the arc-shaped tube 12. The sampling needle 3 and the lead tube 7 are both connected to the cavity. A buffer block 13 is fixed inside the cavity. With the arc-shaped tube 12, the cavity and the buffer block 13, when blood enters the cavity, it will first come into contact with the buffer block 13, and the impact force it carries will be offset. When the blood comes out from the lead tube 7, it will slowly fill the sampling cap 1.

[0033] To further elaborate on the shape of the buffer block 13, the cross-section of the buffer block 13 is elliptical, semi-elliptical, or conical. In this embodiment, the buffer block 13 adopts an elliptical structure.

[0034] refer to Figure 6As shown, in order to achieve a better impact offset effect, the bottom of the buffer block 13 is provided with a liquid inlet hole 14 along its axial direction, and a plurality of circumferentially distributed liquid distribution holes 15 are provided radially on the buffer block 13. The diameter of the liquid inlet hole 14 is larger than the diameter of the liquid distribution hole 15, and the plurality of liquid distribution holes 15 are all connected to the liquid inlet hole 14. Through the arrangement of the liquid inlet hole 14 and the plurality of liquid distribution holes 15, when blood enters the cavity, part of the blood directly enters into the liquid inlet hole 14 and is discharged from the liquid distribution hole 15, while the other part of the blood flows along the outer surface of the buffer block 13. At this time, the blood discharged from the liquid distribution hole 15 collides with this part of the blood, further improving the buffering effect.

[0035] When using this utility model:

[0036] First, during use, the testing personnel directly insert the sampler into the buffer tube 16. During the insertion process, the liquid in the buffer tube 16 passes through the sampler and enters the sampling cap 1.

[0037] Then, according to the structure of Embodiment 1, when the blood passes through the buffer tank 8, the impact force it carries is partially released. The buffer tank 8, together with the baffle 9, can achieve the purpose of depressurization, preventing the blood from rushing directly to the top of the sampling cap 1. The splashed blood is blocked by the enclosure 11, so there will be no problem of blood splashing and contamination.

[0038] Finally, according to the structure of Embodiment 2, when blood enters the cavity, it first comes into contact with the buffer block 13, and the impact force it carries is offset. When the blood comes out from the inlet tube 7, it begins to slowly fill the sampling cap 1.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel sampler, comprising a sampler inserted into a buffer tube (16), characterized in that: The top of the sampler is fitted with a sampling cap (1). The sampler includes a detection part (2) and a handheld part. The handheld part is located above the detection part (2) and is coaxially arranged with it. The detection part (2) includes a sampling needle (3). A side plate (4) is fixed on the sampling needle (3). The handheld part includes a handheld tube (5) with an opening at the top. An annular strip (6) is coaxially fixed on the handheld tube (5). The sampling cap (1) is coaxially arranged with the handheld tube (5) and one end of the sampling cap (1) is in contact with the annular strip (6). A guide tube (7) is coaxially fixed inside the handheld tube (5). The guide tube (7) is connected to the sampling needle (3). The sampling needle (3) and the side plate (4) are provided with a buffer structure to reduce the pressure of liquid entering the sampling cap (1).

2. The novel sampler according to claim 1, characterized in that: The buffer structure includes a side plate (4) and a buffer groove (8) on the sampling needle (3). A baffle (9) is fixed in the buffer groove (8). A through hole (10) is provided in the baffle (9). The diameter of the through hole (10) is the same as the inner diameter of the sampling needle (3).

3. The novel sampler according to claim 2, characterized in that: The bottom of the handheld part is coaxially fixed with a baffle (11), which is funnel-shaped and its lower edge is located above the sampling needle (3).

4. The novel sampler according to claim 1, characterized in that: The buffer structure includes a sampling needle (3) and an arc-shaped tube (12) fixed on the side plate (4). A cavity is formed inside the arc-shaped tube (12), and a buffer block (13) is fixed inside the cavity.

5. A novel sampler according to claim 4, characterized in that: The cross-section of the buffer block (13) is elliptical, semi-elliptical or conical.

6. A novel sampler according to claim 5, characterized in that: The bottom of the buffer block (13) is provided with a liquid inlet hole (14) along its axial direction, and a plurality of circumferentially distributed liquid distribution holes (15) are provided on the buffer block (13) radially. The diameter of the liquid inlet hole (14) is larger than the diameter of the liquid distribution hole (15), and the plurality of liquid distribution holes (15) are all connected to the liquid inlet hole (14).

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