Retractable venipuncture needle with secondary holder

Abstract

The utility model relates to blood taking needle technical field, concretely is a kind of retraction type intravenous blood taking needle with auxiliary fixator, including needle tube retraction type intravenous blood taking needle, the one side outer wall of needle tube retraction type intravenous blood taking needle is provided with needle handle, further include: fixed mechanism, the fixed mechanism is set to needle handle outside;The fixed mechanism includes the support sleeve of sliding connection in the outer wall of needle handle, the one side outer wall of the support sleeve is opened in limit hole, the inner wall of limit hole is connected with locking knob by screw thread, the bottom end outer wall of support sleeve is opened in sliding slot, the both sides outer wall of sliding slot is slidingly connected with damping slider, the bottom end outer wall of damping slider is fixedly connected with support leg;The utility model solves the problem that patient can move arm or body due to nervous, pain, discomfort or consciousness is not clear and so on, causes blood taking needle to pierce blood vessel or from blood vessel and come out, causes blood taking to break off, improves the blood taking efficiency of retraction type intravenous blood taking needle.

Description

Technical Field

[0001] This utility model relates to the field of blood collection needle technology, specifically a retractable venous blood collection needle with an auxiliary fixator. Background Technology

[0002] When drawing blood from a vein, the puncture needle part of the blood collection needle is made of steel. Usually, after a successful puncture, the steel needle may puncture the blood vessel due to the patient's lack of cooperation during the blood collection process.

[0003] A search of Chinese patent CN206995274U reveals a venous blood collection device. In practice, a negative pressure suction tube is connected to the negative pressure interface. After successful puncture of the indwelling needle, the tubing is left inside the blood vessel, and the steel needle retracts into the cannula of the indwelling needle. This avoids puncturing the patient's blood vessel, ensuring safe and continuous blood collection. The device forms an integrated structure with a fixed needle holder, a rubber-stopped puncture needle, and a retractable venous indwelling needle. The structure is simple and easy to use, improving blood collection success rates, saving time, and increasing work efficiency. It is particularly suitable for psychiatric patients and critically ill patients. The rubber-stopped puncture needle can be removed from the heparin cap interface, and a heparin cap can be installed for intravenous infusion.

[0004] Based on the above search and existing technology, it was found that the above patent has certain defects. Without an auxiliary fixation structure, the patient may move their arm or body due to tension, pain, discomfort or loss of consciousness, which may cause the blood collection needle to puncture the blood vessel or fall out of the blood vessel, resulting in interruption of blood collection and reducing the blood collection efficiency of the retractable venous blood collection needle. Utility Model Content

[0005] The purpose of this invention is to provide a retractable venous blood collection needle with an auxiliary fixator to solve the problems mentioned in the background art.

[0006] The technical solution of this utility model is: a retractable venous blood collection needle with an auxiliary fixator, comprising a needle tube retractable venous blood collection needle, wherein a needle handle is provided on one outer wall of the needle tube retractable venous blood collection needle, and further comprising:

[0007] A fixing mechanism is provided on the outside of the needle handle;

[0008] The fixing mechanism includes a support sleeve slidably connected to the outer wall of the needle handle. A limiting hole is formed on one side of the outer wall of the support sleeve. A locking knob is threadedly connected to the inner wall of the limiting hole. A sliding groove is formed on the bottom outer wall of the support sleeve. Damping sliders are slidably connected to the outer walls of both sides of the sliding groove. A support foot is fixedly connected to the bottom outer wall of the damping slider. A limiting frame is fixedly connected to the other side outer wall of the support sleeve. A limiting groove is formed on one side of the outer wall of the limiting frame. A branch tube is provided on one side of the outer wall of the needle tube retractable venous blood collection needle. A connecting hose is provided on one side of the outer wall of the branch tube.

[0009] Preferably, the connecting hose is adapted to the size of the limiting groove, and a needle holder is sleeved on the end of the connecting hose away from the needle tube retractable venous blood collection needle.

[0010] Preferably, a binding strap is fixedly connected to the top outer wall of the needle holder, one side of the bottom outer wall of the binding strap is provided with a rough surface, and the other side of the top outer wall of the binding strap is provided with a hook surface, the sizes of the rough surface and the hook surface being compatible.

[0011] Preferably, the outer wall of the tip of the retractable venous blood collection needle is provided with an adhesive dressing, and the outer wall of the other side of the needle holder is provided with a negative pressure interface.

[0012] This utility model provides an improved retractable venous blood collection needle with an auxiliary fixator, which has the following improvements and advantages compared with the prior art:

[0013] Firstly, this utility model is equipped with a needle handle, a retractable venous blood collection needle, a support sleeve, a limiting frame, and support feet. The support sleeve has two support feet at its bottom. Pushing the damping slider separates the two support feet into a V-shape to support the needle handle. The separation angle of the two support feet can be selected according to the support requirements. The support sleeve can also be pushed to slide on the outer wall of the needle handle to adjust the position of the auxiliary support structure. The locking knob limits the support sleeve to ensure the stability of the structure. The limiting frame on one side of the support sleeve can store and limit the connecting tubing through the limiting groove. This solves the problem that patients may move their arms or bodies due to tension, pain, discomfort, or loss of consciousness, which may cause the blood collection needle to puncture the blood vessel or fall out of the blood vessel, resulting in interruption of blood collection. This improves the blood collection efficiency of the retractable venous blood collection needle.

[0014] Secondly, this utility model incorporates a fixed needle holder, a binding strap, a rough surface, and a hook surface. An adjustable binding strap is added between the connecting tubing and the fixed needle holder. The binding strap, through its rough and hook surfaces, can be used to provide auxiliary fixation around the patient's arm, offering additional support and stability. This prevents the steel needle from puncturing blood vessels due to the patient's lack of cooperation or movement during blood collection, thus improving the practicality of the retractable venous blood collection needle. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an enlarged schematic diagram of the needle holder of this utility model;

[0018] Figure 3This is a front view of the support sleeve of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Needle handle; 2. Branch tube; 3. Adhesive dressing; 4. Retractable venous blood collection needle; 5. Support cannula; 6. Limiting frame; 7. Supporting foot; 8. Connecting tubing; 9. Restraint strap; 10. Needle holder; 11. Textured surface; 12. Hooked surface; 13. Limiting groove; 14. Locking knob; 15. Damping slider. Detailed Implementation

[0021] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0022] This utility model provides an improved retractable venous blood collection needle with an auxiliary fixator. The technical solution of this utility model is as follows:

[0023] like Figures 1-3 As shown, a retractable venous blood collection needle with an auxiliary fixator includes a retractable venous blood collection needle 4, with a needle handle 1 provided on one outer wall of the retractable venous blood collection needle 4, and further includes:

[0024] The fixing mechanism is located outside the needle handle 1;

[0025] The fixing mechanism includes a support sleeve 5 slidably connected to the outer wall of the needle handle 1. A limiting hole is opened on one side of the outer wall of the support sleeve 5. A locking knob 14 is threadedly connected to the inner wall of the limiting hole. A sliding groove is opened on the bottom outer wall of the support sleeve 5. A damping slider 15 is slidably connected to the outer walls of both sides of the sliding groove. A support foot 7 is fixedly connected to the bottom outer wall of the damping slider 15. A limiting frame 6 is fixedly connected to the other side of the outer wall of the support sleeve 5. A limiting groove 13 is opened on one side of the outer wall of the limiting frame 6. A branch tube 2 is provided on one side of the outer wall of the needle tube retraction venous blood collection needle 4. A connecting hose 8 is provided on one side of the outer wall of the branch tube 2. The separation angle of the two support feet 7 can be selected according to the support requirements. The support sleeve 5 can also be pushed to slide on the outer wall of the needle handle 1 to adjust the position of the auxiliary support structure. The locking knob 14 limits the support sleeve 5 to ensure the stability of the structure. The limiting frame 6 on one side of the support sleeve 5 can be used to store and limit the connecting hose 8 through the limiting groove 13.

[0026] Furthermore, the connecting hose 8 is adapted to the size of the limiting groove 13. The end of the connecting hose 8 away from the needle tube retractable venous blood collection needle 4 is fitted with a fixed needle holder 10. The top outer wall of the fixed needle holder 10 is fixedly connected with a binding strap 9. One side outer wall of the bottom of the binding strap 9 is provided with a rough surface 11, and the other side outer wall of the top of the binding strap 9 is provided with a hook surface 12. The sizes of the rough surface 11 and the hook surface 12 are adapted to each other. The top outer wall of the needle tube retractable venous blood collection needle 4 is provided with an adhesive dressing 3, and the other side outer wall of the fixed needle holder 10 is provided with a negative pressure interface.

[0027] Working principle: When using the retractable venous blood collection needle for blood collection, a support sleeve 5 is slidably connected to the outer wall of the needle handle 1. Two support feet 7 are set at the bottom of the support sleeve 5. Pushing the damping slider 15 causes the two support feet 7 to separate into a V-shape to support the needle handle 1. The separation angle of the two support feet 7 can be selected according to the support requirements. Alternatively, the support sleeve 5 can be pushed to slide on the outer wall of the needle handle 1 to adjust the position of the auxiliary support structure. The locking knob 14 limits the support sleeve 5 to ensure the stability of the structure. The limiting frame 6 set on one side of the support sleeve 5 can be used to store and limit the connecting tubing 8 through the limiting groove 13. The adhesive dressing 3 set on the top of the needle retractable venous blood collection needle 4 is used for adhesive fixation during use. An adjustable restraint strap 9 is added between the connecting tubing 8 and the fixed needle holder 10. The restraint strap 9 can be wrapped around the patient's arm for auxiliary fixation through the rough surface 11 and the hook surface 12, providing additional support and stability to prevent the needle from puncturing the blood vessel due to the patient's lack of cooperation or movement during the blood collection process.

[0028] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A retractable venous blood collection needle with an auxiliary fixator, comprising a retractable venous blood collection needle (4), wherein a needle handle (1) is provided on one outer wall of the retractable venous blood collection needle (4), characterized in that: Also includes: A fixing mechanism is disposed outside the needle handle (1); The fixing mechanism includes a support sleeve (5) slidably connected to the outer wall of the needle handle (1). A limiting hole is opened on one side of the outer wall of the support sleeve (5). A locking knob (14) is threadedly connected to the inner wall of the limiting hole. A sliding groove is opened on the bottom outer wall of the support sleeve (5). A damping slider (15) is slidably connected to the outer walls on both sides of the sliding groove. A support foot (7) is fixedly connected to the bottom outer wall of the damping slider (15). A limiting frame (6) is fixedly connected to the other side outer wall of the support sleeve (5). A limiting groove (13) is opened on one side outer wall of the limiting frame (6). A branch tube (2) is provided on one side outer wall of the needle tube retraction venous blood collection needle (4). A connecting hose (8) is provided on one side outer wall of the branch tube (2).

2. The retractable venous blood collection needle with an auxiliary fixator according to claim 1, characterized in that: The size of the connecting hose (8) is adapted to the limiting groove (13), and a fixed needle holder (10) is sleeved at the end of the connecting hose (8) away from the needle tube retractable venous blood collection needle (4).

3. A retractable venous blood collection needle with an auxiliary fixator according to claim 2, characterized in that: The top outer wall of the fixed needle holder (10) is fixedly connected to a binding strap (9). One side of the bottom outer wall of the binding strap (9) is provided with a rough surface (11), and the other side of the top outer wall of the binding strap (9) is provided with a hook surface (12). The sizes of the rough surface (11) and the hook surface (12) are compatible.

4. A retractable venous blood collection needle with an auxiliary fixator according to claim 3, characterized in that: The outer wall of the tip of the retractable venous blood collection needle (4) is provided with an adhesive dressing (3), and the outer wall of the other side of the needle holder (10) is provided with a negative pressure interface.

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