Disposable tube-seal liquid type venous blood taking needle

Abstract

The utility model provides a disposable tube sealing liquid type venous blood taking needle, including syringe, a proper amount of sodium chloride injection is pre -injected in the syringe, still include the connecting head, be provided with first passageway mouth, second passageway mouth and third passageway mouth on the connecting head, and the top of connecting head is equipped with adjusting handle, the first passageway mouth is detachably fixed with tube plug puncture needle, the second passageway mouth is detachably connected with syringe, and the third passageway mouth is connected with venous blood taking needle venous blood taking needle including connecting hose, one end of connecting hose is connected on the third passageway mouth of connecting head, and the other end of connecting hose is connected with needle holder, and needle holder is equipped with the needle head of communication with connecting hose. The utility model discloses simple structure, convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of medical consumables technology, and in particular relates to a disposable intravenous blood collection needle with a sealing tube. Background Technology

[0002] On the day of the intensive blood collection for the clinical trial, an indwelling venous catheter was inserted into the elbow vein of the study participant's forearm. During blood collection, a disposable venous blood collection needle was connected to the heparin cap of the indwelling venous catheter, and a blood collection tube was connected. The negative pressure inside the blood collection tube was used to make the blood flow out. After the required blood volume was collected, the blood collection tube and blood collection needle were removed. Then, a 3-5 ml antiseptic solution (0.9% sodium chloride injection) was pre-drawn into a 10 ml disposable syringe and connected to the heparin cap. The antiseptic solution was sealed in a pulsatile manner. The purpose was to flush out the blood in the indwelling venous catheter to prevent blood clotting and blockage, so that it could be used for the next blood collection. However, repeated punctures of the heparin cap caused the rubber stopper of the heparin cap to fall off and enter the blood vessel, affecting the health of the study participant. The frequent aspiration of the antiseptic solution also led to the rubber stopper of the 0.9% sodium chloride injection bag falling off, contamination of the antiseptic solution, puncture injuries, and wasted time. Utility Model Content

[0003] This invention addresses the technical problems of existing venous blood collection methods that require multiple insertions of the heparin cap onto the indwelling venous catheter, leading to contamination of the sealing solution, puncture injuries, and wasted time. It provides a disposable venous blood collection needle with pre-filled sealing solution, comprising a syringe pre-filled with an appropriate amount of sealing solution. The syringe is pre-filled with 3-5 ml of 0.9% sodium chloride injection or heparin sodium sealing solution. The purpose of the sealing solution is to flush the blood from the venous blood collection needle and the indwelling catheter, reducing blood waste and preventing catheter blockage, facilitating reuse for subsequent blood collections. It also includes a connector with a first, second, and third channel opening, and an adjustment handle at the top. When the adjustment handle is facing the second channel opening, the first and third channels are opened, and the second channel opening is blocked. One end of the venous blood collection needle is inserted into the heparin cap of the indwelling needle (or into a human vein), and the tube plug is inserted into the blood collection tube plug for blood collection. When it is necessary to flush the connecting tubing on the venous blood collection needle and the blood in the needle, the adjustment handle is turned counterclockwise by 90 degrees. At this time, the first channel opening is closed, and the second and third channels are opened. The sealing fluid in the syringe is pushed into the connecting tubing through the syringe to flush the connecting tubing, the needle, and the blood in the indwelling needle. A detachable tube plug puncture needle is fixed to the first channel port, a syringe is detachably connected to the second channel port, and a venous blood collection needle is connected to the third channel port. The venous blood collection needle includes a connecting tube, one end of which is connected to the third channel port of the connector, and the other end of which is connected to a needle hub. The needle hub is provided with a needle that communicates with the connecting tube.

[0004] Preferably, the needle hub is provided with a needle handle that facilitates pushing the needle to pierce the vein, and a needle cap that can be detachably provided on the outside of the needle for protection.

[0005] Preferably, the syringe contains a syringe piston, one end of which is fixed with a piston handle, and the piston handle extends out of the syringe. A push plate is fixed to the end of the piston handle.

[0006] Preferably, an appropriate amount and type of sealing fluid are added to the syringe as needed.

[0007] The above-mentioned approach has the following advantages: The connector is designed so that the opening and closing of the first, second, and third channels can be controlled by rotating the adjustment handle on the connector. Compared with the existing technology, this reduces the number of times the heparin cap on the indwelling needle needs to be repeatedly inserted and removed, improves blood collection efficiency, and reduces needle prick injuries and contamination of the sealing fluid. The needle handle makes it easy to push the needle to puncture the vein. The needle cap protects the needle. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] Reference numerals: 1. Syringe; 2. Connector; 3. Tube plug puncture needle; 4. Blood collection tube; 5. Venous blood collection needle; 12. Syringe piston; 13. Piston handle; 14. Push plate; 21. First channel port; 22. Second channel port; 23. Third channel port; 24. Adjusting handle; 41. Blood collection tube plug; 51. Connecting tubing; 52. Needle hub; 53. Needle tip; 54. Needle handle; 55. Needle cap. Detailed Implementation

[0010] like Figure 1As shown, the disposable intravenous blood collection needle with pre-filled sealing solution includes a syringe 1. The syringe 1 is pre-filled with an appropriate amount of sealing solution. The pre-filled sealing solution in the syringe 1 can be 0.9% sodium chloride injection, heparin sealing solution, or other types of sealing solution, generally 3-5 ml. The purpose of the sealing solution is to flush the blood in the intravenous blood collection needle 5, reduce blood waste, prevent blockage of the indwelling needle catheter, and facilitate continued use for the next blood collection. It also includes a connector 2, which has a first channel port 21, a second channel port 22, and a third channel port 23. The top of the connector 2 is equipped with an adjustment handle 24. When the adjustment handle 24 is facing the syringe 1, the first channel port 21 and the third channel port 23 are opened, and the second channel port 22 is blocked. One end of the needle 53 of the venous blood collection needle 5 is inserted into the heparin cap of the indwelling needle (or the human vein). The tube plug puncture needle 3 is inserted into the blood collection tube plug 41 of the blood collection tube 4 to collect blood. When it is necessary to flush the connecting tube 51, the needle 53, and the blood in the indwelling needle of the venous blood collection needle 5, the adjustment handle 24 is turned counterclockwise by 90 degrees. At this time, the first channel port 21 is closed, and the second channel port 22 and the third channel port 23 are opened. The sealing fluid in the syringe 1 is pushed into the connecting tube 51 through the syringe 1 to flush the connecting tube 51, the needle 53, and the blood in the indwelling needle. A tube plug puncture needle 3 is detachably fixed on the first channel port 21, a syringe 1 is detachably connected to the second channel port 22, and a venous blood collection needle 5 is connected to the third channel port 23. The venous blood collection needle 5 includes a connecting tube 51. One end of the connecting tube 51 is connected to the third channel port 23 of the connector 2, and the other end of the connecting tube 51 is connected to a needle seat 52. The needle seat 52 is provided with a needle 53 that communicates with the connecting tube 51.

[0011] Preferably, the needle hub 52 is provided with a needle handle 54 to facilitate pushing the needle 53 to puncture the vein, and a needle cap 55 for protection is detachably provided on the outside of the needle 53.

[0012] Preferably, the syringe 1 is provided with a syringe piston 12, one end of the syringe piston 12 is fixed with a piston handle 13, and the piston handle 13 extends out of the syringe 1, and a push plate 14 is fixed at the end of the piston handle 13.

[0013] When this invention is in use, if blood needs to be drawn from a person, when the adjusting handle 24 is oriented towards the syringe 1, the first channel port 21 and the third channel port 23 are opened, the second channel port 22 is blocked, the tube plug puncture needle 3 is inserted into the blood collection tube plug 41 of the blood collection tube 4, and one end of the needle 53 of the venous blood collection needle 5 is inserted into the heparin cap of the indwelling needle (or the human vein) to collect blood. If it is necessary to flush the blood in the connecting tubing 51 on the venous blood collection needle 5 and the needle 53, the adjusting handle 24 is rotated 90 degrees counterclockwise. At this time, the first channel port 21 is closed, and the second channel port 22 and the third channel port 23 are opened. The sealing fluid in the syringe 1 is pushed into the connecting tubing 51 through the syringe 1 to flush the blood in the connecting tubing 51, the needle 53 and the indwelling needle.

[0014] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A disposable intravenous blood collection needle with sealing solution, comprising a syringe pre-filled with an appropriate amount of sodium chloride injection solution, characterized in that: It also includes a connector with a first channel, a second channel and a third channel, and an adjustment handle at the top of the connector. A tube plug puncture needle is detachably fixed to the first channel, a syringe is detachably connected to the second channel, and a venous blood collection needle is connected to the third channel.

2. The disposable intravenous blood collection needle with sealing tube according to claim 1, characterized in that: The venous blood collection needle includes a connecting tube, one end of which is connected to the third channel port of the connector, and the other end of which is connected to a needle hub. The needle hub is equipped with a needle that communicates with the connecting tube.

3. The disposable intravenous blood collection needle with sealing solution according to claim 2, characterized in that: The needle hub is equipped with a needle handle that facilitates pushing the needle to pierce the vein, and a detachable needle cap is provided on the outside of the needle for protection.

4. The disposable intravenous blood collection needle with sealing tubing according to claim 1, characterized in that: The syringe should be pre-filled with 3-5 ml of sealing solution as needed.

5. The disposable intravenous blood collection needle with sealing solution according to claim 4, characterized in that: The syringe contains a syringe piston, one end of which is fixed with a piston handle that extends out of the syringe. A push plate is fixed to the end of the piston handle.

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