Artery hemostix

Abstract

The utility model belongs to the technical field of medical instruments, and provides an artery hemostix, which comprises a barrel provided with a blood storage cavity, a tube sample port communicated with the blood storage cavity is arranged at the bottom of the barrel, and an anticoagulation part and a one-way valve are sequentially arranged in the tube sample port from top to bottom; an embedding opening and an exhaust hole stone fixedly embedded in the embedding opening are arranged at the top of the cylinder body, the embedding opening is arranged close to the side wall of the cylinder body, and an inclined part extending into the blood storage cavity is arranged at the bottom of the exhaust hole stone; the blood sampling head is connected to the periphery of the tube sample opening in a sleeving mode and communicated with the blood storage cavity. According to the artery hemostix, a collected blood sample can be subjected to full anticoagulation, blockage caused by formation of microthrombus in the blood sample and influence on follow-up detection and analysis are avoided, residual gas in the hemostix can be effectively reduced, the accuracy of follow-up detection and analysis results is guaranteed, and the artery hemostix is reasonable in structure, convenient to use, low in manufacturing cost and high in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to an arterial blood sampler. Background Art

[0002] At present, the structure of the arterial blood sampler on the market is basically similar to that of a conventional medical syringe. It usually has a sealed piston that can automatically exhaust air. An exhaust hole stone is embedded in the piston, and the inner wall of the tube is pre-coated with anticoagulant evenly. However, the existing blood samplers have the following problems:

[0003] 1. During the puncture blood sampling process, the needle often needs to be inserted obliquely, and the arterial pressure is generally high, resulting in the phenomenon of blood gushing out. When the blood contacts the piston with the hole stone structure, it will cause the premature closure of the exhaust hole stone structure, and the gas cannot be completely discharged, resulting in the residual retention of some air, affecting the accuracy of subsequent test results;

[0004] 2. The anticoagulant only exists on the inner wall of the tube wall. The operator needs to push and pull the piston in advance to mix the anticoagulant. However, there is still the phenomenon of insufficient anticoagulation of the blood sample, resulting in the formation of microthrombi in the blood sample, causing blockage of the sampling equipment and testing equipment;

[0005] 3. The design of the piston exhaust hole stone structure is unreasonable. Since the blood sampler is in an inclined state during the puncture blood sampling process, the exhaust hole stone at the bottom usually contacts the blood and closes quickly in this state, resulting in the ineffective utilization of some exhaust hole stones, and the overall piston is provided with a hole stone structure, resulting in a high manufacturing cost and being not conducive to popularization and use.

[0006] Therefore, it is necessary to design an arterial blood sampler that can effectively solve the above problems and defects. Summary of the Invention

[0007] In order to solve the above technical problems, the utility model provides an arterial blood sampler, which can fully anticoagulate the collected blood sample, avoid the blockage caused by the formation of microthrombi inside the blood sample and affect subsequent test analysis, and can effectively reduce the residual gas in the blood sampler, ensure the accuracy of subsequent test analysis results, with reasonable structure, convenient use, low manufacturing cost and strong practicability.

[0008] The technical solution of the utility model is as follows:

[0009] The utility model provides an arterial blood sampler, comprising:

[0010] A cylinder body, the cylinder body is provided with a blood storage cavity, the bottom of the cylinder body is provided with a tube-like opening communicated with the blood storage cavity, and an anticoagulant part and a one-way valve are arranged in the tube-like opening in sequence from top to bottom;

[0011] A mounting opening is provided at the top of the cylinder body, and an exhaust hole stone fixedly embedded in the mounting opening. The mounting opening is arranged close to the side wall of the cylinder body. An inclined portion extending into the blood storage cavity is provided at the bottom of the exhaust hole stone;

[0012] A blood collection head, the blood collection head is sleeved on the outer periphery of the tube-like opening and is communicated with the blood storage cavity.

[0013] Preferably, the anticoagulant portion includes a wrapping film with an anticoagulant agent inside, and the wrapping film is fixedly connected to the inner wall of the tube-like opening;

[0014] The one-way valve is a medical silicone valve.

[0015] Preferably, the blood collection head includes a main body portion sleeved on the outer periphery of the tube-like opening, a puncturing portion that can extend into the tube-like opening, and a blood collection portion communicated with the puncturing portion;

[0016] The main body portion is detachably connected to the tube-like opening, and the puncturing portion and the blood collection portion are fixedly connected to the main body portion.

[0017] Preferably, an inclined cut is provided at the top of the puncturing portion to puncture and penetrate the wrapping film to communicate the blood collection portion and the blood storage cavity.

[0018] Preferably, the blood collection portion is a puncture needle for puncturing blood collection, or the blood collection portion is a catheter connector for connecting to a catheter for blood collection.

[0019] Preferably, the included angle between the inclined portion and the axis of the cylinder body is 30° to 60°, and the side close to the axis of the cylinder body is the top end of the inclined portion, and the side far from the axis of the cylinder body is the bottom end of the inclined portion.

[0020] Preferably, the cross-section of the mounting opening and the exhaust hole stone is a polygon with at least one side tangent to the inner wall of the side wall of the cylinder body.

[0021] Preferably, the arterial blood collection device provided by the present invention further includes a cap detachably connected to the tube-like opening, and the cap is provided with a socket groove adapted to the tube-like opening.

[0022] Preferably, a connecting portion adapted to the socket groove is further provided at the top of the cylinder body, and the cap is detachably connected to the connecting portion.

[0023] The present invention has the following advantages and effects compared with the prior art:

[0024] (1)Adopt a tubular opening provided with an anticoagulant part and a one-way valve. The collected blood sample flows through the anticoagulant part and comes into full contact and mixing with the anticoagulant in the anticoagulant part, ensuring full anticoagulation inside the blood sample, improving the anticoagulation effect, avoiding the equipment blockage phenomenon caused by the formation of microthrombi inside the blood sample, and the one-way valve can effectively prevent the backflow of the blood sample after sampling ends;

[0025] (2)Adopt exhaust hole stones arranged close to the side wall of the cylinder body, and an inclined part is arranged at the bottom of the exhaust hole stones. The structural design is reasonable and matches the inclined needle insertion during puncture blood collection. During use, place the part where the exhaust hole stones are located above, effectively preventing the incoming blood sample from contacting the exhaust hole stones, facilitating the evacuation of the gas inside the blood storage cavity of the cylinder body, reducing air residue, ensuring the accuracy of subsequent test results, and at the same time minimizing the volume of the exhaust hole stones to the greatest extent, thereby reducing the cost and improving the practicability and easy popularization;

[0026] (3)Adopt a blood collection head provided with a puncture needle and a catheter connector, and arterial puncture blood collection or arterial catheterization blood collection can be adopted according to actual needs, meeting different arterial blood collection usage requirements, with strong practicability and wide application range. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the arterial blood collector in the embodiment of the present utility model;

[0028] Figure 2 It is a schematic internal structural diagram of the cylinder body in the arterial blood collector in the embodiment of the present utility model;

[0029] Figure 3 It is a schematic structural diagram of the cover in the arterial blood collector in the embodiment of the present utility model;

[0030] Figure 4 It is a schematic structural diagram of the blood collection head in the arterial blood collector in the embodiment of the present utility model;

[0031] Figure 5 It is another schematic structural diagram of the blood collection head in the arterial blood collector in the embodiment of the present utility model.

[0032] Reference Signs: 1. Cylinder body; 11. Tubular opening; 12. Anticoagulant part; 13. One-way valve; 14. Fitting opening; 15. Exhaust hole stone; 16. Connecting part; 2. Blood collection head; 21. Main body part; 22. Scratching part; 23. Puncture needle; 24. Catheter connector; 3. Cover; 31. Socket groove. Detailed Embodiments

[0033] In order to enable those skilled in the art to better understand the present utility model, the present utility model will be further described in detail below in conjunction with specific embodiments.

[0034] Embodiment:

[0035] As Figures 1 to 5 shown, the present utility model provides an arterial blood sampler, which includes a cylinder body 1 with an internal blood storage cavity, and a blood collection head 2 and a sealing cover 3 detachably connected to the cylinder body 1.

[0036] Combined with Figure 1 、 Figure 2 shown, the cylinder body 1 is provided with a blood storage cavity for storing blood samples. A connecting portion 16 is provided at the top of the cylinder body 1, and an external thread is provided on the connecting portion 16 so that the sealing cover 3 can be detachably arranged on the connecting portion 16, which is convenient for the operator to grip during the blood collection process; a pipe-like opening 11 communicating with the blood storage cavity is provided at the bottom of the cylinder body 1, and an external thread is provided on the outer wall of the pipe-like opening 11 so that it can be detachably connected to the blood collection head 2. After sampling, the sealing cover 3 can be connected to the pipe-like opening 11 to realize the sealing of the pipe-like opening 11; referring to Figure 2 shown, an anticoagulant portion 12 and a one-way valve 13 are arranged in sequence from top to bottom inside the pipe-like opening 11. The anticoagulant portion 12 includes a wrapping film containing anticoagulant, and the wrapping film is fixedly connected to the inner wall of the pipe-like opening 11. The one-way valve 13 is a medical silica gel valve, so that the blood sample flows into the blood storage cavity unidirectionally. During use, after the blood collection head 2 penetrates through the one-way valve 13 and pierces the wrapping film, the blood sample flows through the anticoagulant portion 12 and is fully contacted and mixed with the anticoagulant to achieve a sufficient and effective anticoagulation effect.

[0037] An embedding opening 14 and an exhaust hole stone 15 fixedly embedded in the embedding opening 14 are provided at the top of the cylinder body 1. The embedding opening 14 is arranged close to the side wall of the cylinder body 1. The cross-sections of the embedding opening 14 and the exhaust hole stone 15 are polygons with at least one side tangent to the inner wall of the side wall of the cylinder body 1. Further, one side of the exhaust hole stone 15 is arranged in contact with the inner wall of the side wall of the cylinder body 1. An inclined portion extending into the blood storage cavity is provided at the bottom of the exhaust hole stone 15. The inclined portion forms an angle of 30° - 60° with the axis of the cylinder body 1, and the side close to the axis of the cylinder body 1 is the top end of the inclined portion, and the side far from the axis of the cylinder body 1 is the bottom end of the inclined portion. During use, the cylinder body 1 needs to be rotated to a position where the embedding opening 14 and the exhaust hole stone 15 are located above. Since the needle needs to be inserted obliquely during the puncture blood collection process, the cylinder body 1 is in an inclined state at this time. Refer to Figure 1 shown for the inclined state. The blood sample is preferentially collected and converged at the bottom, and the air in the cylinder body 1 is discharged through the exhaust hole stone 15 located at the topmost. As the blood sample gradually fills the blood storage cavity, the air in the cylinder body 1 is gradually discharged until the blood sample contacts the exhaust hole stone 15 to cause liquid sealing and closing, completing the arterial blood sampling. It should be noted that the exhaust hole stone 15 is a hole stone structure that only allows gas to flow through. It will be liquid-sealed when contacting the blood sample to achieve sealing. This is a mature prior art in this field and will not be elaborated in detail here.

[0038] As Figure 3As shown, the cap 3 is provided with a socket groove 31 adapted to the tube sample port 11. The inner wall of the socket groove 31 is provided with internal threads. After blood sampling is completed, the blood collection head 2 can be removed, and the cap 3 can be sleeved on the tube sample port 11 for sealing, so as to facilitate long-distance inspection and prevent the overflow of blood samples. The connecting portion 16 at the top of the cylinder 1 is adapted to the socket groove 31, and the connecting portion 16 is provided with external threads, so that the cap 3 is detachably connected to the connecting portion 16 at the top of the cylinder 1.

[0039] Combined with Figure 2 、 Figure 4 、 Figure 5 As shown, the blood collection head 2 includes a main body portion 21 sleeved on the outer periphery of the tube sample port 11, a puncturing portion 22 that can extend into the tube sample port 11, and a blood collection portion communicating with the puncturing portion 22. The puncturing portion 22 and the blood collection portion are both fixedly connected to the main body portion 21. The inner wall of the main body portion 21 is provided with internal threads to make it detachably connected to the tube sample port 11.

[0040] The top of the puncturing portion 22 is provided with an inclined cut, and the inclined cut can completely pierce the wrapping film of the anticoagulant portion 12. During the process of rotating and sleeving the main body portion 21 of the blood collection head 2 on the tube sample port 11, the inclined cut of the puncturing portion 22 passes through the one-way valve 13, then contacts the wrapping film of the anticoagulant portion 12, and completely cuts and penetrates the wrapping film during the rotation process, so that the blood collection portion is communicated with the blood storage cavity. The blood sample in the blood collection portion flows through the anticoagulant portion 12 and contacts the anticoagulant for mixing and anticoagulation, and then enters the blood storage cavity to complete the collection. Further, the length of the inclined cut along the axis direction of the cylinder 1 is greater than the thickness of the anticoagulant portion 12, and in the state where the main body portion 21 is completely sleeved on the tube sample port 11, the lowest end of the inclined cut is not higher than the uppermost wrapping film of the anticoagulant portion 12, so as to avoid the blood sample entering the blood storage cavity directly under the entrainment of the inner cavity of the puncturing portion 22 without flowing through the anticoagulant portion 12 for anticoagulation.

[0041] It should be noted that the rotation angle of the puncturing portion 22 from contacting the wrapping film to completely cutting the wrapping film is less than 360°, so as to avoid completely cutting the wrapping film and causing part of the wrapping film to fall off into the collected blood sample. The preferred rotation angle is 270°, which can effectively ensure the penetration and circulation of the blood sample collection volume, thereby improving the blood sample collection efficiency.

[0042] Refer to Figure 4 、 Figure 5 As shown, the blood collection portion can be a puncture needle 23 or a catheter connector 24. The puncture needle 23 can be used for arterial puncture blood sampling, and the catheter connector 24 can be used for connecting arterial catheter blood sampling. The appropriate blood sampling method can be selected according to actual needs, effectively improving the practicability and expanding the scope of application.

[0043] In summary, the arterial blood sampler provided by the present utility model can fully anticoagulate the collected blood sample, avoid blockage caused by the formation of microthrombi inside the blood sample, and affect subsequent detection and analysis. Moreover, it can effectively reduce the residual gas in the blood sampler, ensure the accuracy of subsequent detection and analysis results, has a reasonable structure, is convenient to use, has a low manufacturing cost, and strong practicability.

[0044] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent changes and modifications made according to the scope of the present utility model should still fall within the scope covered by the present utility model.

Claims

1. An arterial blood sampling device, characterized in that: include: A cylinder (1), the cylinder (1) being provided with a blood storage cavity, a tube-like port (11) being provided at the bottom of the cylinder (1) and being communicated with the blood storage cavity, an anticoagulation portion (12) and a one-way valve (13) being arranged in sequence from top to bottom inside the tube-like port (11); The top of the cylinder (1) is provided with an embedding opening (14) and a venting hole stone (15) fixedly embedded in the embedding opening (14), the embedding opening (14) is arranged close to the side wall of the cylinder (1), and the bottom of the venting hole stone (15) is provided with an inclined portion extending into the blood storage cavity; A blood sampling head (2), the blood sampling head (2) is sleeved on the outer periphery of the tube sample port (11), and is communicated with the blood storage cavity.

2. The arterial blood sampling device according to claim 1, characterized in that: The anticoagulation part (12) comprises a wrapping film with a built-in anticoagulant, and the wrapping film is fixedly connected to the inner wall of the tube sample port (11); The one-way valve (13) is a medical silicone valve.

3. The arterial blood sampling device according to claim 2, characterized in that: The blood collection head (2) comprises a main body (21) sleeved on the outer periphery of the tube sample port (11), a puncturing portion (22) capable of extending into the interior of the tube sample port (11), and a blood collection portion connected to the puncturing portion (22); The main body (21) is detachably connected to the tube sample port (11), and the puncturing portion (22) and the blood sampling portion are fixedly connected to the main body (21).

4. The arterial blood sampling device according to claim 3, characterized in that: The top of the puncturing portion (22) is provided with an oblique cut so as to puncture through the wrapping film to connect the blood collection portion and the blood storage cavity.

5. The arterial blood sampling device according to claim 3, characterized in that: The blood sampling part is a puncture needle (23) used for puncturing and blood sampling, or the blood sampling part is a tube insertion connector (24) used for connecting a tube for blood sampling.

6. The arterial blood sampling device according to claim 1, characterized in that: The inclined portion and the axis of the cylinder (1) form an angle of 30° to 60°, and the side of the inclined portion close to the axis of the cylinder (1) is its top end, and the side away from the axis of the cylinder (1) is its bottom end.

7. The arterial blood sampling device according to claim 1, characterized in that: The cross-sections of the mounting opening (14) and the exhaust hole stone (15) are polygonal in shape, at least one side of which is tangent to the inner wall of the side wall of the cylinder (1).

8. The arterial blood sampling device according to claim 1, characterized in that: It also comprises a sealing cover (3) detachably connected to the tube-like opening (11), wherein the sealing cover (3) is provided with a sleeve groove (31) adapted to the tube-like opening (11).

9. The arterial blood sampling device according to claim 8, characterized in that: The top of the cylinder (1) is also provided with a connecting portion (16) adapted to the sleeve groove (31), and the sealing cover (3) is detachably connected to the connecting portion (16).

Images