Anti-puncture and anti-pollution blood taking needle

Abstract

The utility model discloses an anti-stabbing and anti-pollution blood taking needle, which relates to the technical field of blood taking needles, and comprises a blood taking needle body and a needle head arranged at one end of the blood taking needle body, and further comprises a fixed cylinder arranged along the horizontal direction and fixedly sleeved on the blood taking needle body; the arrangement direction of the sliding rod corresponds to that of the fixed cylinder, and one end of the sliding rod is slidably inserted into one side of the fixed cylinder; the sliding sleeve is sleeved on the blood taking needle body in a sliding manner; by rotating the fixing piece, the fixing piece can drive the lead screw to rotate, the lead screw slides upwards out of the positioning groove while rotating, limiting on the positioning block can be relieved, and then the supporting spring pulls the sliding block to slide in the fixing cylinder due to self-pulling force. Meanwhile, the sliding block can drive the sliding rod and the sliding sleeve to slide and stop at the end of the needle head, the needle head can be protected, the problem that the needle head stabs medical workers and pollutes the medical workers is avoided, in addition, the sliding sleeve does not need to be manually pulled by the workers, the hands of the workers do not need to be close to the needle head, and safety can be further improved.

Description

Technical Field

[0001] This utility model relates to the field of blood collection needle technology, specifically a blood collection needle that is puncture-proof and contamination-proof. Background Technology

[0002] When treating patients, medical staff need to draw blood for tests. This process requires a large number of lancets. After the blood is drawn, blood remains on the needle tips, which can easily cause needle stick injuries and infections when discarding them. Furthermore, the large number of needles with exposed needle tips can contaminate the environment. Therefore, needle stick-proof and contamination-proof lancets have been developed. These lancets have a one-way sliding sleeve. After use, medical staff pull the one-way sliding sleeve to cover the needle tip, thus preventing needle stick injuries and contamination.

[0003] Although the existing anti-puncture and anti-contamination blood collection needles can provide some protection against punctures and contamination, personnel still need to be close to the needle when pulling the sliding sleeve. If the medical staff's hands are sweaty, the sleeve may slip and come into contact with the needle, making them susceptible to needle pricks. To address this issue, we have designed an anti-puncture and anti-contamination blood collection needle. Utility Model Content

[0004] The purpose of this invention is to provide a puncture-proof and contamination-proof blood collection needle to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a puncture-proof and contamination-proof blood collection needle, including a blood collection needle body and a needle tip disposed at one end of the blood collection needle body, and further including...

[0006] A fixing sleeve is installed horizontally and is fixedly fitted onto the blood collection needle body;

[0007] The sliding rod is set in a direction corresponding to the fixed cylinder, and one end is slidably inserted into one side of the fixed cylinder;

[0008] The sliding sleeve is slidably fitted onto the blood collection needle body and is slidably fitted onto the upper end of the needle tip in cooperation with the needle tip, and is fixedly connected on one side to the end of the sliding rod away from the fixed cylinder;

[0009] The slider is slidably installed inside the fixed cylinder, and one side is fixedly connected to the end of the slider rod away from the sliding sleeve;

[0010] The support spring is fixedly installed at one end inside the fixed cylinder and at the other end on one side of the slider;

[0011] A positioning block is fixedly installed on the other side of the slider. A lead screw is threaded into the top of the fixed cylinder. The bottom end of the lead screw is movably inserted into the positioning block. A fixing component is fixedly installed at the top end of the lead screw.

[0012] Furthermore, there are two slide rods, which are symmetrically fixedly installed on one side of the slide sleeve, and the number of support springs corresponds to the number of slide rods.

[0013] Furthermore, a positioning groove is provided on the top of the positioning block, and the bottom end of the lead screw is movably inserted into the positioning groove.

[0014] Furthermore, a cavity is provided inside the fixed cylinder, the slider is slidably connected inside the cavity, and the end of the support spring away from the slider is fixedly installed on the inner side wall of the cavity.

[0015] Furthermore, the outer surface of the fastener is provided with anti-slip texture.

[0016] Furthermore, the top of the fixed cylinder is provided with a threaded hole, which is connected to the cavity, and the lead screw is threadedly inserted into the top of the fixed cylinder through the threaded hole.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: by rotating the fixing component, the fixing component can drive the lead screw to rotate, so that the lead screw slides upward out of the positioning groove while rotating, thereby releasing the limitation on the positioning block. Subsequently, the support spring will pull the slider to slide inside the fixed cylinder due to its own tension. At the same time, the slider will drive the sliding rod and the sliding sleeve to slide and stop at the end of the needle, thus protecting the needle and avoiding the problem of needle puncture injury to medical staff and contamination. In addition, the sliding sleeve does not require manual pulling, so that the personnel do not need to bring their hands close to the needle, which can further improve safety. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the front exterior of this utility model;

[0019] Figure 2 This is a three-dimensional structural schematic diagram showing a half-section view of the inside of the fixing cylinder of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the external side of this utility model;

[0021] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0022] In the diagram: 1. Blood collection needle body; 2. Needle tip; 3. Fixing cylinder; 4. Sliding rod; 5. Sliding sleeve; 6. Sliding block; 7. Supporting spring; 8. Positioning block; 9. Lead screw; 10. Fixing component; 11. Positioning groove; 12. Cavity; 13. Anti-slip texture. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a puncture-proof and contamination-proof blood collection needle, comprising a blood collection needle body 1 and a needle tip 2 disposed at one end of the blood collection needle body 1, and further comprising...

[0025] The fixing cylinder 3 is set in the horizontal direction and is fixedly sleeved on the blood collection needle body 1;

[0026] The sliding rod 4 is set in a direction corresponding to that of the fixed cylinder 3, and one end is slidably inserted into one side of the fixed cylinder 3;

[0027] The sliding sleeve 5 is slidably sleeved on the blood collection needle body 1 and cooperates with the needle 2 to slidely sleeve on the upper end of the needle 2, and is fixedly connected on one side to the end of the sliding rod 4 away from the fixed cylinder 3.

[0028] The slider 6 is slidably installed inside the fixed cylinder 3, and one side is fixedly connected to the end of the slider 4 away from the sliding sleeve 5;

[0029] The support spring 7 is fixedly installed at one end inside the fixed cylinder 3 and at the other end on one side of the slider 6;

[0030] The positioning block 8 is fixedly installed on the other side of the slider 6. The top of the fixed cylinder 3 is threaded with a lead screw 9. The bottom end of the lead screw 9 is movably inserted into the positioning block 8. The top of the lead screw 9 is fixedly installed with a fastener 10. The top of the positioning block 8 is provided with a positioning groove 11. The bottom end of the lead screw 9 is movably inserted into the positioning groove 11.

[0031] In practice, when using the device, medical staff connect the end of the blood collection needle body 1 away from the needle tip 2 to the blood collection tube. Then, the needle tip 2 is inserted into the patient's vein for convenient blood collection. After the blood collection is completed, the staff rotates the fixing component 10, which causes the screw rod 9 to rotate. The screw rod 9 slides upward while rotating until the bottom end of the screw rod 9 slides out of the positioning groove 11, thus releasing the limitation on the positioning block 8. Then, the support spring 7 will drive the slider 6 to slide inside the fixed cylinder 3 due to its own elasticity. At the same time, the slider 6 will drive the sliding rod 4 and the sliding sleeve 5 to slide on the blood collection needle body 1 and stop at the end of the needle tip 2, thus protecting the needle tip 2 and preventing the needle tip 2 from pricking medical staff and causing contamination. In addition, the sliding sleeve 5 does not require manual pulling, so that the staff's hands do not need to be close to the needle tip 2, which can further improve safety.

[0032] See Figure 1-4 There are two slide rods 4, which are symmetrically fixed on one side of the sliding sleeve 5. The number of support springs 7 corresponds to the number of slide rods 4. The arrangement of two slide rods 4 can ensure that the forces on both sides of the sliding sleeve 5 are balanced, thereby avoiding the problem of the sliding sleeve 5 tilting during movement. The arrangement of two support springs 7 can increase the pulling force on the slider 6, thereby ensuring that the sliding sleeve 5 can slide to the end of the needle 2, improving the use effect.

[0033] See Figure 1-4 A cavity 12 is provided inside the fixed cylinder 3, and the slider 6 is slidably connected inside the cavity 12. The end of the support spring 7 away from the slider 6 is fixedly installed on the inner side wall of the cavity 12. This ensures the normal sliding of the slidable parts inside the fixed cylinder 3 and avoids motion interference. To facilitate the installation of the support spring 7 in the cavity 12, the fixed cylinder 3 can be set as two sets of halved semi-cylinders. Then, cavities 12 can be easily opened in the two sets of halved semi-cylinders. After the support spring 7 and the slider 4 are installed in the cavity 12, the two sets of halved semi-cylinders are fixedly combined to form a complete fixed cylinder 3. The fixed cylinder 3 can preferably be made of medical plastic material. Then, it is fixed using an ultrasonic welding machine. The high-frequency vibration melts the plastic at the contact surface of the two sets of halved structures, realizing high-frequency friction and welding of the two plastic parts together. This method has high welding strength and is suitable for parts that require watertight or airtightness. Since the ultrasonic welding machine fixing technology is a mature existing technology, it will not be elaborated further.

[0034] See Figure 1-4 The outer surface of the fastener 10 is provided with anti-slip texture 13. This increases the friction between the user's hand and the fastener 10, making it easier for the user to rotate the fastener 10.

[0035] Working principle: In use, medical staff connect the end of the blood collection needle body 1 away from the needle tip 2 to the blood collection tube, and then insert the needle tip 2 into the patient's vein for convenient blood collection. After the blood collection is completed, the staff rotates the fixing part 10, which drives the lead screw 9 to rotate. The lead screw 9 slides upward while rotating until the bottom end of the lead screw 9 slides out of the positioning groove 11, thus releasing the limitation of the positioning block 8. Then, the support spring 7 will pull the slider 6 to slide in the cavity 12 due to its own tension. At the same time, the slider 6 will drive the sliding rod 4 and the sliding sleeve 5 to slide on the blood collection needle body 1 and stop at the end of the needle tip 2, thus protecting the needle tip 2 and preventing the needle tip 2 from pricking medical staff and causing contamination. In addition, the sliding sleeve 5 does not need to be manually pulled, so that the staff's hands do not need to be close to the needle tip 2, which can further improve safety.

Claims

1. A puncture-proof and contamination-proof blood collection needle, comprising a blood collection needle body (1) and a needle tip (2) disposed at one end of the blood collection needle body (1), characterized in that, It also includes, The fixing cylinder (3) is set in the horizontal direction and is fixedly sleeved on the blood collection needle body (1); The sliding rod (4) is set in a direction corresponding to the fixed cylinder (3), and one end is slidably inserted into one side of the fixed cylinder (3); The sliding sleeve (5) is slidably sleeved on the blood collection needle body (1) and cooperates with the needle tip (2) to slidely sleeve on the upper end of the needle tip (2), and one side is fixedly connected to the end of the sliding rod (4) away from the fixed cylinder (3); The slider (6) is slidably installed inside the fixed cylinder (3), and one side is fixedly connected to the end of the slider (4) away from the sliding sleeve (5); The support spring (7) is fixedly installed at one end inside the fixed cylinder (3) and at the other end on one side of the slider (6); The positioning block (8) is fixedly installed on the other side of the slider (6). The top of the fixed cylinder (3) is threaded with a lead screw (9). The bottom end of the lead screw (9) is movably inserted into the positioning block (8). The top end of the lead screw (9) is fixedly installed with a fastener (10).

2. The anti-puncture and anti-contamination blood collection needle as described in claim 1, characterized in that: There are two slide rods (4), and the two slide rods (4) are symmetrically fixed on one side of the slide sleeve (5). The number of support springs (7) corresponds to the number of slide rods (4).

3. The anti-puncture and anti-contamination blood collection needle as described in claim 1, characterized in that: The top of the positioning block (8) is provided with a positioning groove (11), and the bottom end of the lead screw (9) is movably inserted into the positioning groove (11).

4. The anti-puncture and anti-contamination blood collection needle as described in claim 1, characterized in that: The fixed cylinder (3) has a cavity (12) inside, the slider (6) is slidably connected in the cavity (12), and the end of the support spring (7) away from the slider (6) is fixedly installed on the inner side wall of the cavity (12).

5. The anti-puncture and anti-contamination blood collection needle as described in claim 1, characterized in that: The outer surface of the fastener (10) is provided with anti-slip texture (13).

6. The anti-puncture and anti-contamination blood collection needle as described in claim 5, characterized in that: The top of the fixed cylinder (3) is provided with a threaded hole, which is connected to the cavity (12). The lead screw (9) is threadedly inserted into the top of the fixed cylinder (3) through the threaded hole.

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