Arterial blood gas vacuum collection tube suitable for automatic detection

Abstract

The arterial blood gas vacuum collecting tube suitable for automatic detection is characterized by comprising a collecting tube, a silica gel plug and a tube cap, the silica gel plug is plugged in a tube opening of the collecting tube, the tube cap covers the outer side of the tube opening of the collecting tube and presses the silica gel plug, a center hole is formed in the top of the tube cap, and the silica gel plug is arranged in the center hole. A partition plate is arranged in the collection pipe and used for dividing an inner cavity of the collection pipe into a residual gas collection cavity and a specimen storage cavity, a hydration film pipeline is arranged in the specimen storage cavity and connected to the partition plate from the lower end of the silica gel plug, a collection channel is formed in the hydration film pipeline, and an air inlet communicated with the collection channel is formed in the partition plate. And a reflux valve is arranged at the air inlet. The device has the beneficial effects that the manual operation can be greatly reduced, the working efficiency of a laboratory is improved, the full-automatic detection of arterial blood in the laboratory is facilitated, the influence of air on the arterial blood is reduced, and the accuracy of a blood gas analysis detection result is ensured.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to an arterial blood gas vacuum collection tube suitable for automated detection. Background Technology

[0002] Arterial blood gas analysis, as an important means of clinical diagnosis and treatment, can reflect the body's respiratory and metabolic functions. It is a key indicator in the rescue and monitoring of various acute, critical and severe patients, and the accuracy of its test results directly affects the diagnosis, treatment and rehabilitation process of diseases.

[0003] However, the current clinical method for collecting arterial blood gas analysis is mostly syringe collection tubes. The traditional syringe collection method requires laboratory staff to manually mix the sample, which not only increases the workload, but may also affect the sample quality due to improper operation. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention provides an arterial blood gas vacuum collection tube suitable for automated detection, which enables automatic blood collection and improves the accuracy of blood testing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vacuum arterial blood gas collection tube suitable for automated detection is characterized by comprising a collection tube, a silicone plug, and a cap. The silicone plug blocks the opening of the collection tube, and the cap covers the outside of the opening of the collection tube and presses the silicone plug tightly. The top of the cap has a central hole. A partition is provided inside the collection tube to divide the inner cavity of the collection tube into a residual gas collection chamber and a specimen preservation chamber. The residual gas collection chamber has a preset negative pressure of -10 Pa, and the specimen preservation chamber has a preset negative pressure of -5 Pa. A hydration membrane tube is provided inside the specimen preservation chamber. The hydration membrane tube is connected from the lower end of the silicone plug to the partition. The hydration membrane tube has a collection channel inside, and the partition has an air inlet communicating with the collection channel. A backflow valve is provided at the air inlet.

[0007] Furthermore, the volume ratio of the residual gas collection chamber to the specimen preservation chamber is 1:3.

[0008] Furthermore, the upper end of the hydration membrane conduit is funnel-shaped and sealed to the lower end of the silicone plug.

[0009] Furthermore, the hydration membrane pipeline dissolves and ruptures within 1 second upon contact with water.

[0010] The beneficial effects of this invention include: it can significantly reduce manual operation, improve laboratory work efficiency, facilitate fully automated testing of arterial blood, reduce the influence of air on arterial blood, and ensure the accuracy of blood gas analysis test results. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0013] One such Figure 1 The arterial blood gas vacuum collection tube shown is suitable for automated detection and includes a collection tube 1, a silicone stopper 2, and a cap 3. The silicone stopper 2 plugs the opening of the collection tube 1, and the cap 3 covers the outside of the opening of the collection tube 1 and presses the silicone stopper 2 tightly. The top of the cap 3 has a central hole. This arterial blood gas vacuum collection tube is used with commonly used disposable blood collection needles in clinical practice. Therefore, the silicone stopper 2 is easily punctured by the needle and closes again after the needle is removed, maintaining a vacuum state inside the collection tube.

[0014] The collection tube 1 is equipped with a partition 4 to divide the inner cavity of the collection tube 1 into a residual gas collection chamber 5 and a specimen preservation chamber 6. The residual gas collection chamber 5 is preset to a negative pressure of -10 Pa, the specimen preservation chamber 6 is preset to a negative pressure of -5 Pa, and a heparin anticoagulant with a concentration of 14-22 IU / ml is reserved in the specimen preservation chamber 6.

[0015] The specimen preservation chamber 6 is equipped with a hydration membrane tube 7, which connects to the partition 4 from the lower end of the silicone plug 2. The hydration membrane tube 7 has a collection channel inside, and the partition 4 has an air inlet communicating with the collection channel. A backflow valve 8 is installed at the air inlet. When the initial gas enters the collection tube, it preferentially enters the residual gas collection chamber 5. The volume of the residual gas collection chamber 5 is approximately 1.1 times the internal volume of a typical venous blood collection needle. Therefore, the gas inside the collection needle, as well as a small amount of blood that has come into contact with air at the tip, enters the residual gas collection chamber 5. Due to the presence of the backflow valve 8, the liquid entering the residual gas collection chamber 5 is restricted to flowing in but not out.

[0016] The volume ratio of the residual gas collection chamber 5 to the specimen preservation chamber 6 is 1:3. When blood reaches the hydration membrane tubing and dissolves within approximately one second, the blood then enters the specimen preservation chamber 6. The hydration membrane tubing 7 is readily soluble in water, does not react with blood substances, and does not affect the test results.

[0017] Furthermore, in this embodiment, the upper end of the hydration membrane tube 7 is funnel-shaped and sealed to the lower end of the silicone plug 2. This structure allows the blood collected by the blood collection needle to directly enter the hydration membrane tube 7.

[0018] Furthermore, the collection tube 1 of this invention uses medical-grade reinforced glass or special plastic materials to reduce the risk of test tube breakage and ensure that the inner wall of the test tube is clean and sterile. Biocompatibility testing of the materials is conducted to ensure that they will not react adversely with blood components.

[0019] Furthermore, the material and thickness of the dissolving tubing were adjusted to ensure that it could rupture instantly upon arrival of blood without producing fragments that would contaminate the blood sample.

[0020] Furthermore, this product uses standard interfaces and dimensions for seamless integration with existing automated testing equipment. Identification codes or barcodes can be added to the collection tubes to facilitate sample tracking and information management by automated equipment.

[0021] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An arterial blood gas vacuum collection tube suitable for automated detection, characterized in that: The device includes a collection tube (1), a silicone plug (2), and a cap (3). The silicone plug (2) blocks the opening of the collection tube (1). The cap (3) covers the outside of the opening of the collection tube (1) and presses the silicone plug (2) tightly. The top of the cap (3) has a central hole. A partition (4) is provided inside the collection tube (1) to divide the inner cavity of the collection tube (1) into a residual gas collection chamber (5) and a specimen preservation chamber (6). The residual gas collection chamber (5) has a preset negative pressure of -10 Pa, and the specimen preservation chamber (6) has a preset negative pressure of -5 Pa. A hydration membrane pipeline (7) is provided inside the specimen preservation chamber (6). The hydration membrane pipeline (7) is connected from the lower end of the silicone plug (2) to the partition (4). The hydration membrane pipeline (7) has a collection channel inside. The partition (4) has an air inlet that communicates with the collection channel. A counterflow valve (8) is provided at the air inlet.

2. The arterial blood gas vacuum collection tube suitable for automated detection according to claim 1, characterized in that: The volume ratio of the residual gas collection chamber (5) to the specimen preservation chamber (6) is 1:

3.

3. The arterial blood gas vacuum collection tube suitable for automated detection according to claim 1, characterized in that: The upper end of the hydration membrane pipeline (7) is funnel-shaped and is sealed and bonded to the lower end of the silicone plug (2).

4. The arterial blood gas vacuum collection tube suitable for automated detection according to claim 1, characterized in that: The hydration membrane pipeline (7) dissolves and ruptures within 1 second upon contact with water.

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