Blood sampling and analyzing device

Abstract

The invention provides a blood sampling and analyzing device, and relates to the technical field of blood sampling. Comprising a puncture needle, a first pipeline and a vacuum blood sampling test tube, the puncture needle is arranged at the first end of the first pipeline, and the vacuum blood sampling test tube is arranged at the second end of the first pipeline; the first end of the second pipeline is arranged at the position, close to the second end, of the first pipeline, and the first pipeline is communicated with the interior of the second pipeline; the air extracting device is arranged at the second end of the second pipeline and used for extracting air from the second pipeline; the first flow limiting valve is arranged on the first pipeline and is positioned between the vacuum blood sampling test tube and the second pipeline; and the second flow limiting valve is arranged on the second pipeline. According to the vacuum blood sampling test tube, bacteria and viruses in the air can be prevented from entering the vacuum blood sampling test tube to cause pollution in the use process to a great extent, and the accuracy of subsequent blood analysis is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of blood sampling, and in particular to a blood sampling and analysis device. Background Art

[0002] Blood sampling is a commonly used operation technique in clinical diagnosis, and plays an important role in medical diagnosis, disease monitoring, health assessment, etc. Usually, a puncture needle is used to pierce the patient's skin, and the puncture needle is connected to the vacuum blood collection tube at the rear end through a pipeline. Under the negative pressure of the vacuum blood collection tube, the patient's blood is sucked into the vacuum blood collection tube to complete the blood sampling.

[0003] However, during the use of traditional blood sampling and analysis devices, their pipes and puncture needles will be exposed to the air, especially in scenarios where bacteria and viruses are highly concentrated, such as centralized blood collection stations in hospitals. Bacteria and viruses will be absorbed into the vacuum blood collection tube along with the air before blood, contaminating the blood and causing inaccurate blood analysis.

[0004] Based on this, how to design a blood sampling and analysis device that can avoid contamination during use is one of the problems that need to be solved urgently. Summary of the invention

[0005] The present application provides a blood sampling and analysis device to at least solve the above technical problems existing in the prior art.

[0006] According to a first aspect of the present application, a blood sampling and analysis device is provided, comprising a puncture needle, a first pipe and a vacuum blood collection tube, wherein the puncture needle is arranged at a first end of the first pipe, and the vacuum blood collection tube is arranged at a second end of the first pipe; and further comprising: A second pipe, wherein the first end of the second pipe is disposed on the first pipe near the second end, and the first pipe is connected to the inside of the second pipe; An air extraction device, disposed at the second end of the second pipeline, for extracting air from the second pipeline; A first flow limiting valve is arranged on the first pipeline and is located between the vacuum blood sampling tube and the second pipeline; A second flow limiting valve is arranged on the second pipeline; The blood sampling and analysis device includes a first working state and a second working state; In the first working state, the first flow limiting valve is closed to isolate the vacuum blood collection tube from the puncture needle; at the same time, the second flow limiting valve is opened to connect the puncture needle to the air extraction device and to extract air; In the second working state, the first flow limiting valve is opened to connect the vacuum blood collection tube with the puncture needle; and the second flow limiting valve is closed to isolate the puncture needle from the air extraction device.

[0007] In certain embodiments of the first aspect of the present application, a first connection portion for connecting a vacuum blood collection tube is provided at the second end of the first pipeline. The first connection portion includes a first sleeve sleeved on the vacuum blood collection tube. A puncture portion is provided inside the first sleeve. An infusion channel is axially provided inside the puncture portion, and the infusion channel is communicated with the inside of the first pipeline; When the first sleeve is sleeved on the end of the vacuum blood collection tube, the puncture portion pierces into the vacuum blood collection tube.

[0008] In certain embodiments of the first aspect of the present application, an arc-shaped transition connection portion is provided at the connection between the infusion channel and the first pipeline.

[0009] In certain embodiments of the first aspect of the present application, a needle wing is provided at a position near the puncture needle at the first end of the first pipeline.

[0010] In certain embodiments of the first aspect of the present application, the air extraction device includes: An air extraction sleeve, the head of the air extraction sleeve is connected to the second end of the second pipeline and is communicated with the inside of the second pipeline; A piston, disposed inside the air extraction sleeve and hermetically slidably connected to the air extraction sleeve; An air extraction rod, fixedly connected to the piston, and the air extraction rod extends along the axial direction of the air extraction sleeve until it extends beyond the tail of the air extraction sleeve.

[0011] In certain embodiments of the first aspect of the present application, a second connection portion for connecting the head of the air extraction sleeve is provided at the second end of the second pipeline. The second connection portion includes a second sleeve sleeved on the head of the air extraction sleeve, and the second sleeve is communicated with the inside of the second pipeline.

[0012] In certain embodiments of the first aspect of the present application, a plurality of annular sealing rings are provided on the inner side wall of the second sleeve. When the second sleeve is sleeved on the head of the air extraction sleeve, the annular sealing rings are in contact with the outer side of the head of the air extraction sleeve to form a seal.

[0013] In certain embodiments of the first aspect of the present application, a liquid storage cavity is further provided between the second end of the second pipeline and the second sleeve. The top of the liquid storage cavity is communicated with the second end of the second pipeline. The second sleeve is disposed in the upper middle part of the liquid storage cavity, and the second sleeve is communicated with the inside of the liquid storage cavity.

[0014] In certain embodiments of the first aspect of the present application, the first end of the second pipeline is disposed on the first pipeline at a position 2-5 cm away from the second end.

[0015] Compared with the prior art, the present application has the following beneficial effects: On the first pipeline connecting the puncture needle and the vacuum blood collection tube of the present application, a second pipeline is provided, as well as an air extraction device for extracting air from the second pipeline; in addition, a first flow-limiting valve and a second flow-limiting valve are respectively provided on the first pipeline and the second pipeline. Through the on-off control of the first flow-limiting valve and the second flow-limiting valve, two working states of the blood sampling analysis device can be realized. In the first working state, the first pipeline and the second pipeline are first extracted by the air extraction device to discharge most of the air inside; then in the second working state, blood sampling is carried out, which can largely avoid bacteria and viruses in the air from entering the vacuum blood collection tube during use and causing contamination, ensuring the accuracy of subsequent blood analysis.

[0016] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By referring to the accompanying drawings and reading the following detailed description, the above and other objects, features and advantages of the exemplary embodiments of the present application will become readily understood. In the drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, wherein: In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0018] Figure 1 The overall structural schematic diagram of the first embodiment of the present application is shown.

[0019] Figure 2 The overall structural schematic diagram of the second embodiment of the present application is shown.

[0020] Figure 3 The schematic diagram before the vacuum blood collection tube of the second embodiment of the present application is connected to the end of the first pipeline is shown.

[0021] Figure 4 The schematic diagram after the vacuum blood collection tube of the second embodiment of the present application is connected to the end of the first pipeline is shown.

[0022] Figure 5 The schematic diagram of the structure of the second connection part of the second embodiment of the present application is shown.

[0023] Figure 6 The schematic diagram of the structure of the air extraction device of the second embodiment of the present application is shown.

[0024] Figure 7 The overall structural schematic diagram of the third embodiment of the present application is shown.

[0025] Figure 8 The schematic diagram of the connection relationship of the liquid storage cavity of the third embodiment of the present application is shown.

[0026] Description of Reference Numerals Detailed Embodiment To make the objectives, features, and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0027] Embodiment 1 This embodiment provides a blood sampling and analysis device. Please refer to Figure 1 , which includes a puncture needle 1, a first tube 2, and a vacuum blood collection tube 3. The puncture needle 1 is disposed at the first end of the first tube 2, and the vacuum blood collection tube 3 is disposed at the second end of the first tube 2.

[0028] During use, the puncture needle 1 is punctured into the blood vessel of the patient. Under the negative pressure of the vacuum blood collection tube 3, blood is sucked into the vacuum blood collection tube 3 through the first tube 2.

[0029] It is worth mentioning that in order to facilitate the grasping of the puncture needle 1, a needle wing 11 is provided at a position of the first end of the first tube 2 close to the puncture needle 1.

[0030] Embodiment 2 During the use of the blood sampling and analysis device in Embodiment 1 above, air in the environment will enter the first tube 2 and be sucked into the vacuum blood collection tube 3 along the first tube 2. Especially in scenarios where a large number of patients gather, such as in a centralized blood collection station in a hospital, there are more bacteria and viruses in the air, and it is very easy to cause contamination of the blood in the vacuum blood collection tube 3.

[0031] To reduce the risk of blood contamination in the vacuum blood collection tube 3, the present application is improved based on Embodiment 1. Specifically, please refer to Figure 2 , based on the blood sampling and analysis device in Embodiment 1, Embodiment 2 further includes the following structure.

[0032] A second tube 4, the first end of the second tube 4 is disposed at a position on the first tube 2 as close as possible to the second end, and the first tube 2 and the second tube 4 are internally connected to form a three-way pipe structure. Preferably, the first end of the second tube 4 is disposed on the first tube 2 at a position 2 - 5 cm close to the second end.

[0033] An air extraction device 5 is provided at the second end of the second pipe 4 for extracting air from the second pipe 4. It is worth mentioning that while the air extraction device 5 extracts air, it can also extract air from the first pipe 2 connected to the second pipe 4.

[0034] A first flow limiting valve 6 is provided on the first pipe 2 and is located between the vacuum blood collection tube 3 and the second pipe 4.

[0035] A second flow limiting valve 7 is provided on the second pipe 4.

[0036] The blood sampling and analysis device includes a first working state and a second working state; In the first working state, the first flow limiting valve 6 is closed to isolate the vacuum blood collection tube 3 from the puncture needle 1; at the same time, the second flow limiting valve 7 is opened to connect the puncture needle 1 to the air extraction device 5 and extract air. Specifically, after the puncture needle 1 punctures the patient's blood vessel, through the air extraction of the air extraction device 5, the air in the second pipe 4 and the area of the first pipe 2 near the puncture needle 1 with the first flow limiting valve 6 as the boundary is extracted, and the blood then enters the first pipe 2 and the second pipe 4.

[0037] In the second working state, the first flow limiting valve 6 is opened to connect the vacuum blood collection tube 3 to the puncture needle 1; at the same time, the second flow limiting valve 7 is closed to isolate the puncture needle 1 from the air extraction device 5. After the blood enters the second pipe 4, the first flow limiting valve 6 and the second flow limiting valve 7 can be controlled to switch from the first working state to the second working state. At this time, most of the air in the first pipe 2 has been emptied. Under the negative pressure of the vacuum blood collection tube 3, the blood is sucked into the vacuum blood collection tube 3 through the first pipe 2, which can greatly reduce the risk of blood contamination.

[0038] A detachable connection can be used between the vacuum blood collection tube 3 and the first pipe 2. Specifically, please refer to Figure 3 , a first connection portion 21 for connecting the vacuum blood collection tube is provided at the second end of the first pipe 2.

[0039] The first connection portion 21 includes a first sleeve 211 sleeved on the vacuum blood collection tube 3. A puncture portion 212 is provided inside the first sleeve 211. An infusion channel 213 is axially provided inside the puncture portion 212, and the infusion channel 213 is connected to the inside of the first pipe 2.

[0040] Please refer to Figure 4 , when the first sleeve 211 is sleeved on the end of the vacuum blood collection tube 3, the puncture portion 212 pierces into the vacuum blood collection tube 3, so that the vacuum blood collection tube 3 is connected to the first pipe 2.

[0041] Meanwhile, in order to further enhance the smoothness of blood circulation between the infusion channel 213 and the first pipeline 2, an arc-shaped transition connecting portion 214 is provided at the connection between the infusion channel 213 and the first pipeline 2.

[0042] To achieve a high-performance air extraction effect, please refer to Figure 6 , the air extraction device 5 includes: An air extraction sleeve 51, the head of the air extraction sleeve 51 is connected to the second end of the second pipeline 4 and is in communication with the inside of the second pipeline 4; A piston 52, disposed inside the air extraction sleeve 51 and in sealed sliding connection with the air extraction sleeve 51; An air extraction rod 53, fixedly connected to the piston 52, the air extraction rod 53 extends along the axial direction of the air extraction sleeve 51 until it extends beyond the tail of the air extraction sleeve 51.

[0043] By driving the piston 52 to slide outwards through the air extraction rod 53, a negative pressure can be formed inside the second pipeline 4, thereby forming an efficient air extraction effect.

[0044] Meanwhile, a detachable connection can also be adopted between the air extraction device 5 and the second pipeline 4. Specifically, please refer to Figure 5 and Figure 6 , a second connection portion 8 for connecting the head of the air extraction sleeve 51 is provided at the second end of the second pipeline 4, the second connection portion 8 includes a second sleeve 81 sleeved on the head of the air extraction sleeve 51, and the second sleeve 81 is in communication with the inside of the second pipeline 4.

[0045] To enhance the sealing performance between the second sleeve 81 and the air extraction sleeve 51, a plurality of annular sealing rings 82 are provided on the inner side wall of the second sleeve 81. When the second sleeve 81 is sleeved on the head of the air extraction sleeve 51, the annular sealing rings 82 are in contact with the outer side of the head of the air extraction sleeve to form a seal.

[0046] Embodiment Three: In the solution of the above Embodiment Two, although a detachable connection is adopted between the air extraction device 5 and the second pipeline 4, during the use process, blood is likely to enter the air extraction device 5, specifically into the air extraction sleeve 51. At this time, the air extraction device 5 can only be recycled.

[0047] If the reuse of the air extraction device 5 is to be achieved, this solution needs to be further improved to prevent blood from entering the air extraction device 5.

[0048] Please refer to Figure 7 and Figure 8, on the basis of the second embodiment, in this third embodiment, a liquid storage cavity 9 is further provided between the second end of the second pipeline 4 and the second sleeve 81. The top of the liquid storage cavity 9 is communicated with the second end of the second pipeline 4. The second sleeve 81 is arranged in the upper middle part of the liquid storage cavity 9 and is communicated with the inside of the liquid storage cavity 9.

[0049] During the air extraction process of this solution, even if blood flows out through the second pipeline 4, it will only enter the liquid storage cavity 9 and will not directly enter the air extraction device 5, thus realizing the reuse of the air extraction device 5 and improving the overall economic performance of the device.

[0050] It should be understood that various forms of the processes shown above can be used, reordering, adding, or deleting steps. For example, the steps described in this application can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of this application can be achieved. This is not limited herein.

[0051] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means two or more unless otherwise specifically defined.

[0052] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A blood sampling and analysis device, comprising a puncture needle, a first tube, and a vacuum blood collection tube, wherein the puncture needle is disposed at a first end of the first tube, and the vacuum blood collection tube is disposed at a second end of the first tube; characterized in that, Further included are: A second pipeline, the first end of the second pipeline is arranged at a position on the first pipeline close to the second end, and the inside of the first pipeline is communicated with the inside of the second pipeline; An air extraction device, arranged at the second end of the second pipeline for extracting air from the second pipeline; A first flow limiting valve, arranged on the first pipeline and located between the vacuum blood collection tube and the second pipeline; A second flow limiting valve, arranged on the second pipeline; The blood sampling and analysis device includes a first working state and a second working state; In the first working state, the first flow limiting valve is closed to isolate the vacuum blood collection tube from the puncture needle; at the same time, the second flow limiting valve is opened to connect the puncture needle with the air extraction device and extract air; In the second working state, the first flow limiting valve is opened to connect the vacuum blood collection tube with the puncture needle; at the same time, the second flow limiting valve is closed to isolate the puncture needle from the air extraction device.

2. The blood sampling and analysis device according to claim 1, characterized in that, The second end of the first pipeline is provided with a first connection part for connecting the vacuum blood collection tube. The first connection part includes a first sleeve sleeved on the vacuum blood collection tube. A puncture part is arranged inside the first sleeve. An infusion channel is arranged axially inside the puncture part, and the infusion channel is communicated with the inside of the first pipeline; When the first sleeve is sleeved on the end of the vacuum blood collection tube, the puncture part pierces into the vacuum blood collection tube.

3. The blood sampling and analysis device according to claim 2, wherein An arc-shaped transition connection part is arranged at the connection part between the infusion channel and the first pipeline.

4. The blood sampling and analysis device according to claim 1, characterized in that, A needle wing is arranged at a position on the first end of the first pipeline close to the puncture needle.

5. The blood sampling and analysis device according to claim 1, characterized in that, The air extraction device includes: An air extraction sleeve, the head of the air extraction sleeve is connected to the second end of the second pipeline and is communicated with the inside of the second pipeline; A piston, arranged inside the air extraction sleeve and in sealed sliding connection with the air extraction sleeve; An air extraction rod, fixedly connected to the piston, and the air extraction rod extends along the axial direction of the air extraction sleeve until it extends beyond the tail of the air extraction sleeve.

6. The blood sampling and analysis device according to claim 5, characterized in that, The second end of the second pipeline is provided with a second connection part for connecting the head of the air extraction sleeve. The second connection part includes a second sleeve sleeved on the head of the air extraction sleeve, and the second sleeve is communicated with the inside of the second pipeline.

7. The blood sampling and analysis device according to claim 6, characterized in that, A plurality of annular sealing rings are arranged on the inner side wall of the second sleeve. When the second sleeve is sleeved on the head of the air extraction sleeve, the annular sealing rings are in contact with the outer side of the head of the air extraction sleeve to form a seal.

8. The blood sampling and analysis device according to claim 5, characterized in that, A liquid storage cavity is further arranged between the second end of the second pipeline and the second sleeve. The top of the liquid storage cavity is communicated with the second end of the second pipeline. The second sleeve is arranged in the upper middle part of the liquid storage cavity, and the second sleeve is communicated with the inside of the liquid storage cavity.

9. The blood sampling and analysis device according to claim 1, characterized in that, The first end of the second pipeline is arranged on the first pipeline at a position 2 - 5 cm close to the second end.

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