Anti-backflow sealing structure of vacuum blood collection tube

Abstract

The utility model discloses a kind of vacuum blood collection tube backflow prevention sealing structure, including blood collection tube body, blood collection tube cover and sealing assembly, the upper portion of blood collection tube cover is equipped with sealing groove, the inside of sealing groove is equipped with first blood needle jack, the lower portion of blood collection tube cover is connected with tube cover inner ring shell, the bottom of tube cover inner ring shell is connected with anti-reflux component.This device is first by being provided with anti-reflux component, utilize the sealing column and annular sealing strip in anti-reflux component and insert to the inside of blood collection tube body, and then utilize annular sealing strip and the inner wall of blood collection tube body generate extrusion force, simultaneously and cooperate upper check valve, so that the blood sample after being collected in blood collection tube body can be prevented to appear penetration or flow out etc. Subsequently, sealing assembly sealing rod is inserted into the inside of first blood needle jack and the inside of second blood needle jack, and then first blood needle jack and second blood needle jack are sealed.

Description

Technical Field

[0001] This utility model relates to the field of vacuum blood collection tube technology, and in particular to a vacuum blood collection tube anti-backflow sealing structure. Background Technology

[0002] The principle of vacuum blood collection tubes is to pre-evacuate the blood collection tubes with caps to different degrees of vacuum, and use the negative pressure to automatically and quantitatively collect venous blood samples. One end of the blood collection needle is inserted into the human vein, and the other end is inserted into the rubber stopper of the vacuum blood collection tube. The human venous blood is inside the vacuum blood collection tube, and under the action of negative pressure, it is drawn into the blood sample container through the blood collection needle. Multiple tubes can be collected in one venous puncture without leakage.

[0003] When using the negative pressure of a vacuum blood collection tube in conjunction with a blood collection needle to collect blood from individuals, residual air inside the tube may flow back into the needle after the negative pressure blood collection is completed. Furthermore, some vacuum blood collection tubes have poor sealing, and the loss of negative pressure after blood collection can lead to reduced sealing, causing blood to seep out and ultimately affecting the detection of blood samples inside the vacuum blood collection tube. Therefore, we propose a backflow prevention sealing structure for vacuum blood collection tubes to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a backflow prevention sealing structure for vacuum blood collection tubes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A vacuum blood collection tube anti-backflow sealing structure includes a blood collection tube body, a blood collection tube cap, and a sealing assembly. A sealing groove is provided on the top of the blood collection tube cap, and a first blood collection needle insertion hole is provided inside the sealing groove. An inner ring shell is connected to the bottom of the blood collection tube cap, and an anti-backflow assembly is connected to the bottom of the inner ring shell. A one-way valve is connected to the bottom of the anti-backflow assembly.

[0007] In a further embodiment, the anti-backflow component includes a sealing column, the interior of which has a second blood collection needle insertion hole, and the outer surface of the sealing column is connected to an annular sealing strip.

[0008] In a further embodiment, the sealing assembly includes a sealing cover plate, a sealing rod connected to the lower part of the sealing cover plate, a pull ring connected to the upper surface of the sealing cover plate, and the dimensions of the sealing rod being adapted to the dimensions of the first blood collection needle insertion hole and the second blood collection needle insertion hole, respectively.

[0009] In a further embodiment, the outer surface of the blood collection tube body is provided with external threads, and the inner wall of the blood collection tube cap is connected with internal threads, wherein the external threads are adapted to the internal threads.

[0010] In a further embodiment, the outer surface of the blood collection tube body is provided with a blood sample collection label, and the outer surface of the blood collection tube cap is provided with an anti-slip pattern.

[0011] In a further embodiment, a sample observation groove is formed on the outer surface of the blood collection tube body, and a transparent glass is connected inside the sample observation groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device first incorporates an anti-backflow component. The sealing column and annular sealing strip within this component are inserted into the blood collection tube body. The annular sealing strip then exerts pressure against the inner wall of the blood collection tube body. Simultaneously, a one-way valve is used to prevent blood samples collected inside the blood collection tube body from seeping or leaking during transport. Next, a sealing rod from the sealing component is inserted into the first and second blood collection needle insertion holes to seal them. A sealing cover plate is then used to seal the sealing groove, preventing air from entering the blood collection tube body. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the blood collection tube body in a vacuum blood collection tube anti-backflow sealing structure.

[0015] Figure 2 This is a three-dimensional structural diagram of the blood collection tube cap in a vacuum blood collection tube anti-backflow sealing structure.

[0016] Figure 3 This is a three-dimensional structural diagram of a sealing component in a vacuum blood collection tube anti-backflow sealing structure.

[0017] Figure 4 This is a front sectional view of a vacuum blood collection tube cap with an anti-backflow sealing structure.

[0018] In the diagram: 1. Blood collection tube body; 2. Blood collection tube cap; 3. Anti-backflow component; 301. Sealing column; 302. Second blood collection needle insertion hole; 303. Annular sealing strip; 4. Sealing component; 401. Sealing cover plate; 402. Sealing rod; 403. Pull ring; 5. Sealing groove; 6. First blood collection needle insertion hole; 7. External thread; 8. Internal thread; 9. Blood sample collection label; 10. Sample observation slot; 11. Inner ring of the tube cap; 12. One-way valve. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0022] Please see Figure 1-4This utility model discloses a vacuum blood collection tube anti-backflow sealing structure, comprising a blood collection tube body 1, a blood collection tube cap 2, and a sealing assembly 4. A sealing groove 5 is provided on the top of the blood collection tube cap 2, and a first blood collection needle insertion hole 6 is provided inside the sealing groove 5. An inner ring shell 11 is connected to the bottom of the blood collection tube cap 2, and an anti-backflow assembly 3 is connected to the bottom end of the inner ring shell 11. A one-way valve 12 is connected below the anti-backflow assembly 3. The anti-backflow assembly 3 includes a sealing column 301, and a second blood collection needle insertion hole 302 is provided inside the sealing column 301. An annular sealing strip 303 is connected to the outer surface of the sealing column 301. The sealing assembly 4 includes a sealing cover plate 401, a sealing rod 402 is connected to the bottom of the sealing cover plate 401, and a pull ring 403 is connected to the upper surface of the sealing cover plate 401. The dimensions of the sealing rod 402 are respectively the same as the dimensions of the first blood collection needle insertion hole 6 and the second blood collection needle insertion hole 302. The size of the tube is matched, and the anti-backflow component 3 is inserted into the inside of the blood collection tube body 1. The sealing rod 402 and the sealing cover plate 401 are both made of elastic rubber. In this way, the sealing rod 301 can drive the annular sealing strip 303 to squeeze the inner wall of the blood collection tube body 1, thereby achieving a good anti-backflow effect inside the blood collection tube body 1. At the same time, the one-way valve 12 can achieve a better anti-backflow effect inside the blood collection tube body 1. Then, the sealing cover plate 401 is combined with the sealing groove 5, so that the sealing rod 402 can enter the first blood collection needle insertion hole 6 and the second blood collection needle insertion hole 302 respectively, and the sealing rod 402 can seal the first blood collection needle insertion hole 6 and the second blood collection needle insertion hole 302. This can achieve a good sealing effect inside the blood collection tube body 1, thereby preventing air from entering the inside of the blood collection tube body 1.

[0023] The outer surface of the blood collection tube body 1 is provided with an external thread 7, and the inner wall of the blood collection tube cap 2 is connected with an internal thread 8. The external thread 7 is adapted to the internal thread 8. The outer surface of the blood collection tube body 1 is provided with a blood sample collection label 9, and the outer surface of the blood collection tube cap 2 is provided with an anti-slip pattern. The outer surface of the blood collection tube body 1 is provided with a sample observation slot 10, and the inside of the sample observation slot 10 is connected with transparent glass. By using the torque of the internal thread 8 and the external thread 7, the blood collection tube cap 2 and the blood collection tube body 1 can be tightly screwed together. The blood sample collection label 9 can be used to facilitate the collection personnel to classify each blood collection tube body 1, and the sample observation slot 10 can be used to facilitate the staff to view the blood sample inside the blood collection tube body 1.

[0024] The working principle of this utility model is as follows:

[0025] When using this product, the user first uses the pull ring 403 to pull the sealing cover 401 out from the inside of the sealing groove 5, which in turn pulls the sealing rod 402 out from the inside of the first blood collection needle insertion hole 6 and the second blood collection needle insertion hole 302. After pulling it out, the operator inserts one end of the external blood collection needle into the inside of the first blood collection needle insertion hole 6 and the second blood collection needle insertion hole 302, and then inserts one end of the external blood collection needle into the inside of the human vein. Then, the negative pressure inside the blood collection tube body 1 is used to collect blood. After the blood collection is completed, the operator removes one end of the external blood collection needle. Remove the needle from the first blood collection needle insertion hole 6 and the second blood collection needle insertion hole 302, and insert the sealing cover plate 401 into the sealing groove 5. Then, the sealing rod 402 enters the first blood collection needle insertion hole 6 and the second blood collection needle insertion hole 302, thereby sealing the inside of the blood collection tube body 1. At the same time, the sealing column 301 in the anti-backflow component 3 drives the annular sealing strip 303 to squeeze the inside of the blood collection tube body 1, and with the cooperation of the one-way valve 12, a good anti-backflow effect can be formed inside the blood collection tube body 1. The above is the complete operation process of this product.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A backflow prevention sealing structure for vacuum blood collection tubes, characterized in that: The device includes a blood collection tube body (1), a blood collection tube cap (2), and a sealing assembly (4). A sealing groove (5) is provided on the top of the blood collection tube cap (2), and a first blood collection needle insertion hole (6) is provided inside the sealing groove (5). An inner ring shell (11) is connected to the bottom of the blood collection tube cap (2), and an anti-backflow assembly (3) is connected to the bottom of the inner ring shell (11). A one-way valve (12) is connected to the bottom of the anti-backflow assembly (3).

2. The anti-backflow sealing structure for vacuum blood collection tubes according to claim 1, characterized in that: The anti-backflow component (3) includes a sealing column (301), the interior of which is provided with a second blood collection needle insertion hole (302), and the outer surface of the sealing column (301) is connected with an annular sealing strip (303).

3. The anti-backflow sealing structure for vacuum blood collection tubes according to claim 2, characterized in that: The sealing assembly (4) includes a sealing cover plate (401), a sealing rod (402) is connected to the lower part of the sealing cover plate (401), and a pull ring (403) is connected to the upper surface of the sealing cover plate (401). The size of the sealing rod (402) is adapted to the size of the first blood collection needle insertion hole (6) and the size of the second blood collection needle insertion hole (302).

4. The anti-backflow sealing structure for vacuum blood collection tubes according to claim 1, characterized in that: The outer surface of the blood collection tube body (1) is provided with an external thread (7), and the inner wall of the blood collection tube cap (2) is connected with an internal thread (8). The external thread (7) and the internal thread (8) are adapted to each other.

5. The anti-backflow sealing structure for vacuum blood collection tubes according to claim 1, characterized in that: The outer surface of the blood collection tube body (1) is provided with a blood sample collection label (9), and the outer surface of the blood collection tube cap (2) is provided with an anti-slip pattern.

6. The anti-backflow sealing structure for vacuum blood collection tubes according to claim 1, characterized in that: The outer surface of the blood collection tube body (1) is provided with a sample observation groove (10), and the inside of the sample observation groove (10) is connected with transparent glass.

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