Blood sampling and puncture integrated arterial indwelling needle

Abstract

The utility model relates to a blood sampling and puncture integrated artery indwelling needle, including hose, needle handle, one end of needle handle is connected with hose, the other end is equipped with the joint for with pressure measuring pipeline intercommunication, be equipped with puncture needle head in the hose, the puncture end of puncture needle head is worn out one end of hose, the other end extends to the joint, the connecting end of joint is sleeved with puncture needle handle, puncture needle handle and puncture needle head corresponding one end intercommunication, the lateral wall of needle handle is equipped with through -hole near the hose, and the through -hole is sealed and is equipped with blood sampling and puncture part, in the blood sampling and puncture part of this structure blood sampling, only heparin in the hose enters the blood sampling needle, effectively avoided heparin in the pressure measuring pipeline, only need to discard the blood of 2-3 times of hose capacity, compared with blood sampling from transducer, the blood amount of discarding is reduced significantly.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an integrated arterial indwelling needle for blood collection and puncture. Background Technology

[0002] Clinically, some patients require invasive arterial catheters due to hemodynamic instability. These catheters are connected to a transducer via a pressure-measuring tubing to monitor the patient's blood pressure. When blood needs to be drawn, it is usually drawn from the transducer. However, to prevent blood clotting within the pressure-measuring tubing, anticoagulant heparin is injected into the tubing before drawing blood from the transducer. To avoid heparin interfering with blood test results, 2-3 times the volume of blood in the pressure-measuring tubing needs to be removed to effectively reduce heparin interference. This can lead to excessive blood loss and adverse effects on the patient. Utility Model Content

[0003] The purpose of this invention is to provide an integrated arterial indwelling needle for blood collection and puncture, thereby solving the aforementioned problems in the prior art.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] An integrated arterial catheter for blood collection and puncture includes a flexible tube and a needle handle. One end of the needle handle is connected to the flexible tube, and the other end is provided with a connector for connecting to a pressure measuring line. A puncture needle is provided inside the flexible tube. The puncture end of the puncture needle extends out of one end of the flexible tube, and the other end extends into the connector. The connecting end of the connector is fitted with the puncture needle handle. The puncture needle handle is connected to the corresponding end of the puncture needle. A through hole is provided on the side wall of the needle handle near the flexible tube, and a blood collection puncture part is sealed inside the through hole.

[0006] The beneficial effects of this utility model are as follows: when the puncture needle is inserted into the patient's artery, keep the puncture needle in place, slowly push the tubing into the artery along the puncture needle, and when the tubing is completely inserted into the artery, gently pull the puncture needle out of the tubing through the puncture needle handle, and at the same time connect the pressure measuring tubing to the connector.

[0007] When blood needs to be drawn, the lancet is inserted through the puncture site to draw blood. After the blood is drawn, the lancet is withdrawn, and the puncture site elastically returns to its original position to seal the puncture site. The blood that may affect the test results is discarded, and a new lancet is used to draw qualified blood for testing. Studies have shown that to avoid heparin affecting blood test results, 2-3 times the volume of blood in the pressure measuring tubing needs to be removed to effectively reduce heparin interference. However, when blood is drawn at this site, only the heparin in the tubing enters the lancet, effectively avoiding heparin in the pressure measuring tubing. Only 2-3 times the volume of blood in the tubing needs to be discarded, which significantly reduces the amount of blood discarded compared to blood drawn from the transducer.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the blood collection puncture site is plugged with silicone.

[0010] Furthermore, a hemispherical depression is provided in the middle of the blood collection puncture site.

[0011] Furthermore, a cover is provided at the blood collection puncture site.

[0012] Furthermore, a support portion is provided on the outer wall of the needle handle. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is an exploded view of the present invention;

[0015] Figure 3 This is a schematic diagram of the utility model in use.

[0016] The attached diagram lists the components represented by each number as follows:

[0017] 1. Tube, 2. Needle handle, 21. Connector, 22. Through hole, 23. Blood collection puncture site, 231. Hemispherical depression, 24. Cover, 25. Support, 3. Pressure measuring line, 4. Puncture needle, 41. Puncture needle handle, 5. Transducer. Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0019] Example 1

[0020] like Figures 1 to 3 As shown, an integrated arterial indwelling needle for blood collection and puncture includes a flexible tube 1 and a needle handle 2. One end of the needle handle 2 is connected to the flexible tube 1, and the other end is provided with a connector 21 for connecting to a pressure measuring line 3. A puncture needle 4 is provided inside the flexible tube 1. The puncture end of the puncture needle 4 extends out of one end of the flexible tube 1, and the other end extends into the connector 21. The connecting end of the connector 21 is sleeved with a puncture needle handle 41. The puncture needle handle 41 is connected to the corresponding end of the puncture needle 4. A through hole 22 is provided on the side wall of the needle handle 2 near the flexible tube 1. A blood collection puncture part 23 is sealed inside the through hole 22.

[0021] When the puncture needle 4 is inserted into the patient's artery, keep the puncture needle 4 in place and slowly push the tubing 1 into the artery along the puncture needle 4. When the tubing 1 is completely inserted into the artery, gently pull the puncture needle 4 out of the tubing 1 through the puncture needle handle 41, and at the same time connect the pressure measuring tubing 3 to the connector 21.

[0022] When blood collection is required, the lancet is inserted through the lancet 23 to draw blood. After collection, the lancet is withdrawn, and the lancet 23 elastically returns to its original position to seal the puncture site. Any blood that may affect the test results is discarded, and a new lancet is used to draw qualified blood for testing. Research has shown that to avoid heparin affecting blood test results, 2-3 times the volume of blood in the pressure measuring tubing needs to be removed to effectively reduce heparin interference. However, with this method, only the heparin in the tubing 1 enters the lancet, effectively avoiding heparin in the pressure measuring tubing 3. Only 2-3 times the volume of blood in the tubing 1 needs to be discarded, significantly reducing the amount of blood discarded compared to collecting blood from the transducer. In practice, after the lancet 4 is withdrawn, the connector 21 is connected to one end of the pressure measuring tubing 3, and the other end of the pressure measuring tubing 3 is connected to the transducer 5.

[0023] Example 2

[0024] This embodiment is a further improvement on embodiment 1, as detailed below:

[0025] The blood collection puncture part 23 is a silicone plug; the silicone plug has good sealing performance and good resilience, allowing for repeated punctures. A hemispherical recess 231 is provided in the middle of the blood collection puncture part 23; each time blood is collected, the blood collection needle is inserted through the hemispherical recess 231, which effectively reduces the number of puncture holes on the blood collection puncture part 23 and further improves the sealing performance. A cover 24 is provided correspondingly to the blood collection puncture part 23; after blood collection, covering it with the cover effectively prevents dust from sticking to the blood collection puncture part 23. In specific implementation, the cover 24 is hinged to the outer wall of the through hole 22.

[0026] Example 3

[0027] This embodiment is a further improvement on embodiment 1, as detailed below:

[0028] The outer wall of the needle handle 2 is provided with a support part 25; the support part 25 realizes the stable fixation of the arterial indwelling needle, which is conducive to the blood collection operation of the blood collection puncture part 23.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated blood sampling and arterial indwelling needle, characterized by comprising: The device includes a flexible tube (1) and a needle handle (2). One end of the needle handle (2) is connected to the flexible tube (1), and the other end is provided with a connector (21) for connecting to a pressure measuring line (3). A puncture needle (4) is provided inside the flexible tube (1). The puncture end of the puncture needle (4) extends out of one end of the flexible tube (1), and the other end extends into the connector (21). The connecting end of the connector (21) is fitted with a puncture needle handle (41). The puncture needle handle (41) is connected to the end of the puncture needle (4). A through hole (22) is provided on the side wall of the needle handle (2) near the flexible tube (1). A blood collection puncture part (23) is sealed inside the through hole (22).

2. The integrated arterial indwelling needle for blood collection and puncture according to claim 1, characterized in that, The blood collection puncture site (23) is a silicone plug.

3. The integrated arterial indwelling needle for blood collection and puncture according to claim 1, characterized in that, The blood collection puncture site (23) has a hemispherical depression (231) in the middle.

4. The integrated arterial indwelling needle for blood collection and puncture according to claim 1, characterized in that, A cover (24) is provided at the blood collection puncture site (23).

5. The integrated arterial indwelling needle for blood collection and puncture according to any one of claims 1 to 4, characterized in that, The outer wall of the needle handle (2) is provided with a support (25).

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