Improved closed vacuum blood sampling device for hemodialysis

Abstract

The utility model discloses a kind of improved closed vacuum blood sampling devices for hemodialysis, it is related to medical instrument technical field, including joint mechanism, the inside of joint mechanism is provided with connecting mechanism.The utility model passes through joint mechanism and connecting mechanism, both cooperation, can simplify the complicated blood sampling step process, directly save blood sampling time, reduce the occurrence of needle stick injury, improve the work efficiency of nurse, when needing to use, only need to insert the end of disposable blood sampling needle tube into slot, then rotate anti -skid layer, make rotating block with anti -skid layer fixed connection drive rotating pipe rotate in the hole of connecting hole, and then make the protruding thread of the end of disposable blood sampling needle tube and internal thread groove thread connection, form closed vacuum environment, simultaneously connect pipe head inserts into vacuum blood sampling test tube simultaneously form closed vacuum environment, then the vacuum negative pressure of blood sampling test tube, automatic negative pressure suction blood sampling, can effectively avoid needle stick injury in blood sampling.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a modified closed-loop vacuum blood collection device for hemodialysis. Background Technology

[0002] In the medical field, maintenance hemodialysis is an important renal replacement therapy for patients with end-stage renal disease. These patients require long-term treatment and regular blood sampling to monitor various indicators. However, traditional blood sampling methods have the following drawbacks:

[0003] 1. Needlestick injuries are likely to occur during the procedure, posing a threat to the safety of medical staff;

[0004] 2. Large blood volumes and repeated blood draws can easily cause blood to overflow, which not only wastes blood but may also pose a risk of iatrogenic contamination.

[0005] 3. Collected blood samples are easily contaminated, and the sample volume is difficult to control, which directly affects the test results and may lead to a second blood draw; the blood collection procedure is complicated, the workload of nurses is heavy, and the efficiency is low. Utility Model Content

[0006] The purpose of this invention is to provide an improved closed-loop vacuum blood collection device for hemodialysis to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A modified closed vacuum blood collection device for hemodialysis includes a connector mechanism, wherein a connecting mechanism is provided inside the connector mechanism.

[0009] The connector mechanism includes a connector, and a protective gasket is fixedly connected to the bottom outer wall of the connector.

[0010] A further improvement of this utility model is that: a connection hole is provided at the top of the connector, and the connection hole is connected to the interior of the connector.

[0011] A further improvement of the present invention is that the connecting mechanism includes a rotating tube, which is disposed inside the connecting hole, and a connecting tube is fixedly connected inside the rotating tube.

[0012] A further improvement of this utility model is that a connecting tube head is fixedly connected to the bottom surface of the connecting tube, the connecting tube head is connected to the connecting tube, and the connecting tube head is compatible with vacuum blood collection tubes on the market.

[0013] A further improvement of this utility model is that: a through hole is provided on the bottom surface of the connecting pipe head, the through hole is connected to the connecting pipe head, and a rotating block is fixedly connected to the top surface of the rotating pipe.

[0014] A further improvement of this utility model is that: an anti-slip layer is fixedly connected to the outer wall of the rotating block, and a groove is opened inside the rotating block.

[0015] A further improvement of this utility model is that the inner wall of the slot is provided with an internal thread groove, which can be adapted to blood-drawing needles available on the market.

[0016] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0017] This invention provides an improved closed-loop vacuum blood collection device for hemodialysis. By combining a connector mechanism consisting of a connector, protective gasket, and connecting hole, and a connecting mechanism consisting of a connecting tube head, through hole, rotating tube, connecting tube, rotating block, slot, anti-slip layer, and internal threaded groove, these two mechanisms work together to simplify the complex blood collection process, directly saving time, reducing needlestick injuries, and improving nurses' efficiency. When needed, simply insert the end of the disposable blood collection needle into the slot, then rotate the anti-slip layer to engage the rotating block, which is fixedly connected to the anti-slip layer. The moving block drives the rotating tube to rotate within the connecting hole, thereby connecting the raised thread at the end of the disposable blood collection needle tube with the internal thread groove, forming a sealed vacuum environment. At the same time, the connecting tube head is inserted into the vacuum blood collection test tube, forming a sealed vacuum environment. Then, the vacuum negative pressure of the blood collection test tube automatically draws blood, which can effectively avoid the technical problems of easy needle pricks, blood overflow when drawing large amounts of blood repeatedly, easy contamination of blood samples, and difficulty in controlling the sample volume, which directly affects the test results. It also avoids the complex blood collection procedures and heavy workload of nurses, while having a lower cost. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 For the present utility model in Figure 1 A schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Connector mechanism; 11. Connector; 12. Protective washer; 13. Connecting hole; 2. Connecting mechanism; 21. Connecting pipe head; 22. Through hole; 23. Rotating pipe; 24. Connecting pipe; 25. Rotating block; 26. Groove; 27. Anti-slip layer; 28. Internal thread groove. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to embodiments:

[0023] Example 1

[0024] like Figures 1-3 As shown, this utility model provides an improved closed-loop vacuum blood collection device for hemodialysis, including a connector mechanism 1. A connecting mechanism 2 is provided inside the connector mechanism 1. The connector mechanism 1 includes a connector 11, with a protective gasket 12 fixedly connected to the outer wall of the bottom end of the connector 11. A connecting hole 13 is provided at the top end of the connector 11, communicating with the interior of the connector 11. The connecting mechanism 2 includes a rotating tube 23, which is disposed within the hole of the connecting hole 13. A connecting tube 24 is fixedly connected inside the rotating tube 23. The bottom surface of tube 4 is fixedly connected to a connecting tube head 21, which is connected to the connecting tube 24. The connecting tube head 21 is compatible with vacuum blood collection tubes on the market. The bottom surface of the connecting tube head 21 has a through hole 22, which is connected to the connecting tube head 21. The top surface of the rotating tube 23 is fixedly connected to a rotating block 25. The outer wall of the rotating block 25 is fixedly connected to an anti-slip layer 27. The inside of the rotating block 25 has a slot 26, and the inner wall of the slot 26 has an internal thread groove 28, which is compatible with blood collection needles on the market.

[0025] In this embodiment, by setting up a connector mechanism consisting of a connector, a protective washer, and a connecting hole, and a connecting mechanism consisting of a connecting tube head, a through hole, a rotating tube, a connecting tube, a rotating block, a slot, an anti-slip layer, and an internal threaded groove, the two work together to simplify the complicated blood collection process, directly save blood collection time, reduce the occurrence of needlestick injuries, and improve the efficiency of nurses. When needed, simply insert the end of the disposable blood collection needle into the slot, and then rotate the anti-slip layer, causing the rotating block, which is fixedly connected to the anti-slip layer, to drive the rotating tube in the connecting... The needle rotates within the hole, causing the raised thread at the end of the disposable blood collection needle to connect with the internal thread groove, forming a sealed vacuum environment. Simultaneously, the connecting tube head is inserted into the vacuum blood collection tube, creating a sealed vacuum environment. Then, the vacuum negative pressure of the blood collection tube automatically draws blood, effectively avoiding the technical problems of needlestick injuries, blood overflow during repeated blood collection when the blood volume is large, easy contamination of blood samples, difficulty in controlling the sample volume which directly affects the test results, complex blood collection procedures, and heavy workload for nurses. At the same time, the cost is relatively low.

[0026] The working principle of this modified closed-loop vacuum blood collection device for hemodialysis will be explained in detail below.

[0027] like Figures 1-3As shown, in use, first simply insert the end of the disposable blood collection needle into the slot, then rotate the anti-slip layer, causing the rotating block fixedly connected to the anti-slip layer to drive the rotating tube to rotate in the hole of the connection hole, thereby making the protruding thread at the end of the disposable blood collection needle threadedly connected to the internal thread groove, forming a sealed vacuum environment. At the same time, the connecting tube head is inserted into the vacuum blood collection test tube, forming a sealed vacuum environment. Then, the vacuum negative pressure of the blood collection test tube automatically draws blood.

[0028] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A modified closed-loop vacuum blood collection device for hemodialysis, comprising a connector mechanism (1), characterized in that: The connector mechanism (1) is internally provided with a connecting mechanism (2); The connector mechanism (1) includes a connector (11), and a protective gasket (12) is fixedly connected to the bottom outer wall of the connector (11).

2. The improved closed-loop vacuum blood collection device for hemodialysis according to claim 1, characterized in that: The top end of the connector (11) is provided with a connection hole (13), which is connected to the interior of the connector (11).

3. The improved closed-loop vacuum blood collection device for hemodialysis according to claim 2, characterized in that: The connecting mechanism (2) includes a rotating tube (23), which is disposed inside the hole of the connecting hole (13), and a connecting tube (24) is fixedly connected inside the rotating tube (23).

4. The improved closed-loop vacuum blood collection device for hemodialysis according to claim 3, characterized in that: The bottom surface of the connecting tube (24) is fixedly connected to a connecting tube head (21), the connecting tube head (21) is connected to the connecting tube (24), and the connecting tube head (21) is compatible with vacuum blood collection tubes on the market.

5. A modified closed-loop vacuum blood collection device for hemodialysis according to claim 4, characterized in that: The bottom surface of the connecting pipe head (21) is provided with a through hole (22), which is connected to the connecting pipe head (21). The top surface of the rotating pipe (23) is fixedly connected with a rotating block (25).

6. A modified closed-loop vacuum blood collection device for hemodialysis according to claim 5, characterized in that: The outer wall of the rotating block (25) is fixedly connected with an anti-slip layer (27), and the interior of the rotating block (25) is provided with a groove (26).

7. A modified closed-loop vacuum blood collection device for hemodialysis according to claim 6, characterized in that: The inner wall of the slot (26) is provided with an internal thread groove (28), which can be adapted to blood drawing needles available on the market.

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