Disposable arteriovenous blood taking needle

Abstract

The utility model relates to the technical field of medical instruments, and discloses a disposable arteriovenous blood taking needle which comprises a medical three-way plug valve, the left end of the medical three-way plug valve is fixedly communicated with a first connecting pipe, and the upper end and the lower end of the medical three-way plug valve are fixedly communicated with second connecting pipes. A first hose is attached to the inner wall of the first connecting tube, a second hose is attached to the inner wall of the second connecting tube, a blood sampling needle is adhered to the inner wall of the first hose, and a test tube needle is adhered to the inner wall of the second hose. Through the medical three-way plug valve, the first connecting tube, the second connecting tube, the first hose, the second hose, the blood sampling needle head and the test tube needle head, after the blood sampling needle head penetrates into the artery of a patient, the blood sampling needle head can be used for sampling the artery of the patient through the matching of the medical three-way plug valve, the first connecting tube, the second connecting tube, the first hose, the second hose and the test tube needle head; medical staff can directly collect two blood samples, so that the puncture frequency of the blood taking needle is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a disposable arteriovenous blood collection needle. Background Art

[0002] Arterial blood sampling is mainly for blood gas analysis to understand the body's oxygen supply and acid-base balance. It is one of the important indicators for rescuing critically ill patients. However, at present, disposable blood collection needles can only provide single sampling and cannot meet the needs of collecting other blood samples at the same time. Therefore, when taking multiple samples from patients, the patient needs to be punctured multiple times, which increases the pain of the patient. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings existing in the prior art, such as: at present, the disposable blood collection needle can only provide single sampling and cannot meet other blood sample collection needs at the same time. Furthermore, when multiple samples are taken from the patient, the patient needs to be punctured multiple times, which increases the pain of the puncture for the patient. The disposable arteriovenous blood collection needle is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A disposable arteriovenous blood collection needle comprises a medical three-way stopcock, the left end of which is fixedly connected to a first connecting tube, the right end of which and the bottom end of which are fixedly connected to a second connecting tube, the inner wall of the first connecting tube being fitted with a first hose, the inner wall of the second connecting tube being fitted with a second hose, a blood collection needle being bonded to the inner wall of the first hose, a test tube needle being bonded to the inner wall of the second hose, annular grooves being provided on the surfaces of the first connecting tube and the second connecting tube, a locking mechanism being bonded to the surfaces of the first hose and the second hose, the surface of the locking mechanism being in contact with the inner wall of the annular groove.

[0006] Preferably, the locking mechanism includes a first hollow block, the surface of the first hose and the surface of the second hose are both bonded to the inner wall of the first hollow block, the surface of the first hollow block is fixedly connected to a square column, the surface of the square column is sleeved with a square tube, the front and rear sides of the square tube are fixedly connected to the second hollow block, the inner wall of the second hollow block is fixedly connected to an elastic metal sheet, the side of the elastic metal sheet close to the first hollow block is fixedly connected to an L-shaped column, the surface of the L-shaped column is in contact with the inner wall of the annular groove, the surface of the square tube is sleeved with a spring, and the spring is located between the first hollow block and the second hollow block.

[0007] Preferably, the length of the first hose and the length of the second hose are both 10 cm.

[0008] Preferably, rubber rings are bonded to the surface of the first hose, the surface of the second hose and the side of the first hollow block close to the medical three-way stopcock, and the side of the first connecting tube away from the medical three-way stopcock and the side of the second connecting tube away from the medical three-way stopcock are in contact with the side of the rubber ring.

[0009] Preferably, a connecting column is fixedly connected to the back of the medical three-way stopcock, a baffle is fixedly connected to the back of the connecting column, a slide groove is provided inside the baffle, a slider is fitted on the inner wall of the slide groove, and the front side of the slider is fixedly connected to the back side of the first hollow block.

[0010] Preferably, the elastic force of the spring is greater than the sum of the gravity of the square tube, the second hollow block, the elastic metal sheet and the L-shaped column.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model comprises a medical three-way stopcock, a first connecting tube, a second connecting tube, a first hose, a second hose, a blood collection needle and a test tube needle. When the blood collection needle is inserted into the patient's artery, the medical three-way stopcock, the first connecting tube, the second connecting tube, the first hose, the second hose and the test tube needle cooperate to enable medical staff to directly collect two blood samples, thereby effectively reducing the number of punctures of the blood collection needle. At the same time, the locking mechanism and the annular groove cooperate to make the connection between the first connecting tube and the first hose and between the second connecting tube and the second hose more firmly connected, so that the first hose and the second hose will not fall off during the blood collection process.

[0013] (2) The utility model provides a connecting column, a baffle, a slide groove and a slider. When the slider contacts the slide groove, the first connecting pipe is aligned with the first hose or the second connecting pipe is aligned with the second hose through the cooperation of the slider and the slide groove. Then, the second hose and the second hose are more convenient to install through the cooperation of the connecting column, the baffle, the slide groove and the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the locking mechanism of the utility model;

[0016] Figure 3 It is a front view of the baffle of the utility model.

[0017] In the figure: 1. medical three-way stopcock; 2. first connecting pipe; 3. second connecting pipe; 4. first hose; 5. second hose; 6. blood collection needle; 7. test tube needle; 8. annular groove; 9. locking mechanism; 91. first hollow block; 92. square column; 93. square cylinder; 94. second hollow block; 95. elastic metal sheet; 96. L-shaped column; 97. spring; 10. rubber ring; 11. connecting column; 12. baffle; 13. slide groove; 14. slider. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0020] Embodiment 1:

[0021] Reference Figure 1-2 A disposable arteriovenous blood collection needle comprises a medical three-way stopcock 1, the left end of the medical three-way stopcock 1 is fixedly connected with a first connecting tube 2, the right end of the medical three-way stopcock 1 and the bottom end of the medical three-way stopcock 1 are fixedly connected with a second connecting tube 3, the inner wall of the first connecting tube 2 is fitted with a first hose 4, the inner wall of the second connecting tube 3 is fitted with a second hose 5, the length of the first hose 4 and the length of the second hose 5 are both 10 cm, a blood collection needle 6 is bonded to the inner wall of the first hose 4, a test tube needle 7 is bonded to the inner wall of the second hose 5, an annular groove 8 is provided on the surface of the first connecting tube 2 and the surface of the second connecting tube 3, a locking mechanism 9 is bonded to the surface of the first hose 4 and the surface of the second hose 5, and the surface of the locking mechanism 9 contacts the inner wall of the annular groove 8.

[0022] The locking mechanism 9 includes a first hollow block 91, the surface of the first hose 4 and the surface of the second hose 5 are both bonded to the inner wall of the first hollow block 91, a square column 92 is fixedly connected to the surface of the first hollow block 91, a square tube 93 is sleeved on the surface of the square column 92, and a second hollow block 94 is fixedly connected to the front and rear sides of the square tube 93, and an elastic metal sheet 95 is fixedly connected to the inner wall of the second hollow block 94, and an L-shaped column 96 is fixedly connected to the side of the elastic metal sheet 95 close to the first hollow block 91, and the surface of the L-shaped column 96 is connected to the annular groove. 8, a spring 97 is sleeved on the surface of the square tube 93, and the spring 97 is located between the first hollow block 91 and the second hollow block 94. The elastic force of the spring 97 is greater than the sum of the gravity of the square tube 93, the second hollow block 94, the elastic metal sheet 95 and the L-shaped column 96. Through the thrust of the spring 97 on the second hollow block 94, the L-shaped column 96 is in close contact with the annular groove 8, and through the cooperation of the L-shaped column 96 and the annular groove 8, the connection between the first connecting pipe 2 and the first hose 4 and between the second connecting pipe 3 and the second hose 5 is more firmly connected.

[0023] Embodiment 2:

[0024] Reference Figure 1 The surface of the first hose 4, the surface of the second hose 5 and the side of the first hollow block 91 close to the medical three-way stopcock 1 are all bonded with rubber rings 10, and the side of the first connecting tube 2 away from the medical three-way stopcock 1 and the side of the second connecting tube 3 away from the medical three-way stopcock 1 are in contact with the side of the rubber ring 10, and the connection between the first connecting tube 2 and the first hose 4 and between the second connecting tube 3 and the second hose 5 is sealed by the rubber ring 10.

[0025] Embodiment three:

[0026] Reference Figure 1-3 The back of the medical three-way stopcock 1 is fixedly connected with a connecting column 11, and the back of the connecting column 11 is fixedly connected with a baffle 12. A slide groove 13 is provided inside the baffle 12, and a slider 14 is provided on the inner wall of the slide groove 13. The front of the slider 14 is fixedly connected to the back of the first hollow block 91. By setting the connecting column 11, the baffle 12, the slide groove 13 and the slider 14, when the slider 14 contacts the slide groove 13, the first connecting pipe 2 and the first hose 4 or the second connecting pipe 3 and the second hose 5 are aligned through the cooperation of the slider 14 and the slide groove 13, and then the second hose 5 and the second hose 5 are more convenient to install through the cooperation of the connecting column 11, the baffle 12, the slide groove 13 and the slider 14.

[0027] In the present invention, when using the disposable arteriovenous blood collection needle, the medical staff first inserts the first hose 4 into the first connecting tube 2, and inserts the L-shaped column 96 into the annular groove 8 on the first connecting tube 2. At this time, the spring 97 pushes the second hollow block 94 to make the L-shaped column 96 and the annular groove 8 closely contact each other, and the first hose 4 is fixed in the first connecting tube 2 through the cooperation of the L-shaped column 96 and the annular groove 8. Then, the second hose 5 is inserted into the second connecting tube 3, and the L-shaped column 96 is inserted into the annular groove 8. To the annular groove 8 on the second connecting tube 3. At this time, the spring 97 pushes the second hollow block 94 to make the L-shaped column 96 and the annular groove 8 in close contact, and the second hose 5 is fixed in the second connecting tube 3 through the cooperation of the L-shaped column 96 and the annular groove 8. Then, the blood collection needle 6 is pierced into the patient's blood, and the test tube needle 7 is inserted into the blood collection test tube. The blood sample enters the two blood collection test tubes by controlling the medical three-way stopcock 1. After the blood collection is completed, the blood collection needle 6 is pulled out from the patient.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A disposable arteriovenous blood collection needle, comprising a medical three-way stopcock (1), characterized in that: The left end of the medical three-way stopcock (1) is fixedly connected to a first connecting pipe (2), the right end of the medical three-way stopcock (1) and the bottom end of the medical three-way stopcock (1) are both fixedly connected to a second connecting pipe (3), the inner wall of the first connecting pipe (2) is fitted with a first hose (4), the inner wall of the second connecting pipe (3) is fitted with a second hose (5), the inner wall of the first hose (4) is bonded with a blood collection needle (6), the inner wall of the second hose (5) is bonded with a test tube needle (7), the surface of the first connecting pipe (2) and the surface of the second connecting pipe (3) are both provided with an annular groove (8), the surface of the first hose (4) and the surface of the second hose (5) are both bonded with a locking mechanism (9), and the surface of the locking mechanism (9) is in contact with the inner wall of the annular groove (8).

2. The disposable arteriovenous blood collection needle according to claim 1, characterized in that: The locking mechanism (9) comprises a first hollow block (91), the surface of the first hose (4) and the surface of the second hose (5) are both bonded to the inner wall of the first hollow block (91), a square column (92) is fixedly connected to the surface of the first hollow block (91), a square tube (93) is sleeved on the surface of the square column (92), a second hollow block (94) is fixedly connected to the front and rear sides of the square tube (93), an elastic metal sheet (95) is fixedly connected to the inner wall of the second hollow block (94), a side of the elastic metal sheet (95) close to the first hollow block (91) is fixedly connected to an L-shaped column (96), the surface of the L-shaped column (96) contacts the inner wall of the annular groove (8), a spring (97) is sleeved on the surface of the square tube (93), and the spring (97) is located between the first hollow block (91) and the second hollow block (94).

3. The disposable arteriovenous blood collection needle according to claim 1, characterized in that: The length of the first hose (4) and the length of the second hose (5) are both 10 cm.

4. The disposable arteriovenous blood collection needle according to claim 2, characterized in that: The surface of the first hose (4), the surface of the second hose (5) and the side of the first hollow block (91) close to the medical three-way stopcock (1) are all bonded with a rubber ring (10), and the side of the first connecting tube (2) away from the medical three-way stopcock (1) and the side of the second connecting tube (3) away from the medical three-way stopcock (1) are in contact with the side of the rubber ring (10).

5. The disposable arteriovenous blood collection needle according to claim 1, characterized in that: The back of the medical three-way stopcock (1) is fixedly connected to a connecting column (11), the back of the connecting column (11) is fixedly connected to a baffle (12), a slide groove (13) is provided inside the baffle (12), a slider (14) is fitted on the inner wall of the slide groove (13), and the front of the slider (14) is fixedly connected to the back of the first hollow block (91).

6. The disposable arteriovenous blood collection needle according to claim 2, characterized in that: The elastic force of the spring (97) is greater than the sum of the gravity of the square tube (93), the second hollow block (94), the elastic metal sheet (95) and the L-shaped column (96).

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