Anti-stab blood taking needle

Abstract

The utility model belongs to the blood taking needle technical field, concretely is a kind of anti-stab blood taking needle, including fixed sleeve, the inside fixed connection of fixed sleeve has needle, the inside sliding connection of fixed sleeve has protective sleeve, protective sleeve sliding connection is in the outer wall of needle, the inside sliding connection of protective sleeve has pin one, the inside sliding connection of protective sleeve has pin two, pin one and pin two are all sliding connection in the inside of fixed sleeve. The utility model is by pressing slide axle one and slide axle two, make slide axle one and slide axle two inside fixed sleeve sliding push pin one and pin two inside protective sleeve, protective sleeve is not positioned and clamped in the inside of fixed sleeve at this moment, the elastic force of spring five is used to drive protective sleeve reset, make protective sleeve slide up to the upper end position of needle, the upper end position of needle is protected using protective sleeve, prevent medical staff or patient from being accidentally pricked by needle in the use process.

Description

Technical Field

[0001] This utility model belongs to the field of blood collection needle technology, specifically a blood collection needle that prevents puncture wounds. Background Technology

[0002] A lancet is a medical device used to collect blood samples from the human body. It typically consists of a sharp metal needle, a thin tubing, a connector, and a handle. The needle is used to pierce the skin and blood vessels, the tubing is used to hold and transfer blood, the connector is used to attach the tubing to a blood collection tube or other container, and the handle facilitates operation by healthcare personnel. Strict aseptic procedures must be followed when using lancets to prevent infection and cross-contamination. After collecting a blood sample, the lancet is usually discarded to ensure hygiene and safety. In some cases, lancets may be designed for single use to further reduce the risk of infection.

[0003] In existing technologies, the needle tip of blood collection needles is usually exposed and lacks a protective structure, which can easily lead to accidental punctures to medical staff or patients during use, posing certain safety hazards. Summary of the Invention

[0004] The purpose of this invention is to provide a puncture-proof blood collection needle, which uses a protective sleeve to protect the upper part of the needle tip, preventing medical staff or patients from being accidentally punctured.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A puncture-resistant blood collection needle is provided, comprising a fixed sleeve, a needle fixedly connected inside the fixed sleeve, a protective sleeve slidably connected inside the fixed sleeve, the protective sleeve slidably connected to the outer wall of the needle, a locking pin one slidably connected inside the protective sleeve, a locking pin two slidably connected inside the protective sleeve, both locking pin one and locking pin two being slidably connected inside the fixed sleeve, a spring one being provided inside the protective sleeve, a spring two being provided inside the protective sleeve, one end of spring one being fixedly connected inside the locking pin one, the other end of spring one being fixedly connected inside the protective sleeve, one end of spring two being fixedly connected inside the locking pin two, and the other end of spring two being fixedly connected inside the protective sleeve.

[0006] Optionally, the outer wall of the protective sleeve is fitted with a spring five, one end of which is fixedly connected to the inside of the protective sleeve, and the other end of which is fixedly connected to the inside of the fixed sleeve.

[0007] Optionally, a sliding shaft one is slidably connected inside the fixed sleeve, a sliding shaft two is slidably connected inside the fixed sleeve, a spring three is sleeved on the outer wall of the sliding shaft one, and a spring four is sleeved on the outer wall of the sliding shaft two.

[0008] Optionally, one end of the third spring is fixedly connected to the inside of the first slide shaft, and the other end of the third spring is fixedly connected to the inside of the fixed sleeve. One end of the fourth spring is fixedly connected to the inside of the second slide shaft, and the other end of the fourth spring is fixedly connected to the inside of the fixed sleeve.

[0009] Optionally, a blood collection tube is fixedly connected inside the fixing sleeve, a connecting sleeve is fixedly connected to the outer wall of the blood collection tube, a tail needle is fixedly connected to the lower end of the blood collection tube, and a connecting block is fixedly connected to the outer wall of the connecting sleeve.

[0010] Optionally, a connecting rope is rotatably connected inside the first connecting block, a sealing plug is slidably connected inside the connecting sleeve, a second connecting block is fixedly connected to the outer wall of the sealing plug, and the connecting rope is rotatably connected inside the second connecting block.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model allows the sliding shafts 1 and 2 to slide inwards towards the fixed sleeve by pressing them, which in turn pushes the locking pins 1 and 2 towards the protective sleeve. At this time, the protective sleeve is not limited and locked inside the fixed sleeve. The elastic force of the spring 5 drives the protective sleeve to reset, allowing it to slide upwards to the upper part of the needle. The protective sleeve protects the upper part of the needle, preventing medical staff or patients from being accidentally pricked by the needle during use.

[0013] 2. This utility model uses a connecting sleeve to fix the needle to the outer wall of the blood collection tube and covers the needle inside the connecting sleeve. At the same time, the sealing plug is rotated to seal the needle inside the connecting sleeve, thus protecting the needle and further preventing medical staff or patients from being accidentally pricked by the needle during use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the protective sleeve structure of this utility model;

[0017] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4This is a schematic diagram of the connecting sleeve of this utility model;

[0019] Figure 5 for Figure 4 A magnified structural diagram at point B.

[0020] In the diagram: 1. Fixing sleeve; 2. Needle; 3. Protective sleeve; 4. Locking pin one; 5. Spring one; 6. Locking pin two; 7. Spring two; 8. Sliding shaft one; 9. Spring three; 10. Sliding shaft two; 11. Spring four; 12. Spring five; 13. Blood collection tube; 14. Connecting sleeve; 15. Tail needle; 16. Connecting block one; 17. Connecting rope; 18. Connecting block two; 19. Sealing plug. Detailed Implementation

[0021] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] The present invention will now be described. The anti-puncture blood collection needle includes a fixed sleeve 1, a needle 2 fixedly connected inside the fixed sleeve 1, and a protective sleeve 3 slidably connected inside the fixed sleeve 1, the protective sleeve 3 being slidably connected to the outer wall of the needle 2. A locking pin 4 and a locking pin 6 are slidably connected inside the protective sleeve 3. Both locking pins 4 and 6 are slidably connected inside the fixed sleeve 1, limiting their sliding within the fixed sleeve 1, thus fixing the protective sleeve 3 inside the fixed sleeve 1. A spring 5 and a spring 7 are disposed inside the protective sleeve 3. One end of spring 5 is fixedly connected inside locking pin 4, and the other end is fixedly connected inside the protective sleeve 3. One end of spring 7 is fixedly connected inside locking pin 6, and the other end is fixedly connected inside the protective sleeve 3. Springs 5 ​​and 7 support locking pins 4 and 6 respectively, and also provide an automatic reset effect. As a result, the outer wall of the protective sleeve 3 is fitted with a spring 5 12. One end of the spring 5 12 is fixedly connected to the inside of the protective sleeve 3, and the other end of the spring 5 12 is fixedly connected to the inside of the fixed sleeve 1. The spring 5 12 supports the protective sleeve 3 and also has an automatic reset effect, which can help drive the protective sleeve 3 to slide upward. The protective sleeve 3 slides to the upper end of the needle 2 for protection, which can play a role in preventing puncture. The fixed sleeve 1 is slidably connected to a sliding shaft 1 8 and a sliding shaft 2 10. The outer wall of the sliding shaft 1 8 is fitted with a spring 3 9, and the outer wall of the sliding shaft 2 10 is fitted with a spring 4 11. One end of the spring 3 9 is fixedly connected to the inside of the sliding shaft 1 8, and the other end of the spring 3 9 is fixedly connected to the inside of the fixed sleeve 1. One end of the spring 4 11 is fixedly connected to the inside of the sliding shaft 2 10, and the other end of the spring 4 11 is fixedly connected to the inside of the fixed sleeve 1. The sliding shaft 1 8 and the sliding shaft 2 10 respectively abut against the outer walls of the locking pin 1 4 and the locking pin 2 6.

[0026] The anti-puncture blood collection needle provided by this utility model, compared with the prior art, uses a protective sleeve 3 to protect the upper part of the needle 2, preventing medical staff or patients from being accidentally punctured.

[0027] Please refer to another embodiment of this utility model as well. Figure 4 and Figure 5The fixed sleeve 1 has a blood collection tube 13 fixedly connected inside, and a connecting sleeve 14 fixedly connected to the outer wall of the blood collection tube 13. The lower end of the blood collection tube 13 is fixedly connected to a tail needle 15, which is located inside the connecting sleeve 14. The connecting sleeve 14 protects the tail needle 15. A connecting block 16 is fixedly connected to the outer wall of the connecting sleeve 14. A connecting rope 17 is rotatably connected inside the connecting block 16. A sealing plug 19 is slidably connected inside the connecting sleeve 14. A connecting block 2 18 is fixedly connected to the outer wall of the sealing plug 19. The connecting rope 17 is rotatably connected inside the connecting block 2 18. The sealing plug 19 seals the connecting sleeve 14, which not only prevents punctures but also prevents dust from entering the tail needle 15.

[0028] Working principle: When drawing blood from a patient, the protective sleeve 3 is first moved down, causing the locking pins 4 and 6 to move down as well. As the locking pins 4 and 6 slide down inside the fixed sleeve 1, they are compressed by the inner wall of the fixed sleeve 1, simultaneously compressing springs 5 ​​and 7. When the locking pins 4 and 6 slide into the fixed sleeve 1, springs 5 ​​and 7 automatically reset, limiting the locking pins 4 and 6 and securing them inside the fixed sleeve 1. The mechanism is then further optimized by the compression of springs 5 ​​and 7. 7. Supporting the locking pins 4 and 6 respectively, the protective sleeve 3 can be fixed inside the fixing sleeve 1. At this time, the medical staff will hold the fixing sleeve 1 and insert the needle 2 into the patient's body to collect blood. Pull the sealing plug 19 outward to disengage it from the inside of the connecting sleeve 14. Place the blood collection tube into the connecting sleeve 14 and let the tail needle 15 pierce through the blood collection tube to collect blood inside the tube. After collection, remove the tube and slide the sealing plug 19 back into the connecting sleeve. Inside the connecting sleeve 14, the sealing plug 19 seals the connecting sleeve 14 to prevent the tail needle 15 from puncturing medical staff or patients, thus preventing puncture. Then, the needle 2 needs to be pulled out. After the needle 2 is pulled out, the sliding shaft 18 and sliding shaft 2 10 are pressed in time, so that the sliding shaft 18 and sliding shaft 2 10 slide into the fixed sleeve 1 at the same time, pushing the locking pin 14 and locking pin 26 into the protective sleeve 3, so that the locking pin 14 and locking pin 26 are disengaged from the fixed sleeve 1. At this time, the protective sleeve 3 is compressed by the spring 5 12 during the limiting and fixing process. When the protective sleeve 3 is no longer limited, the elastic force of the spring 5 12 drives the protective sleeve 3 to automatically reset, so that the protective sleeve 3 slides upward to the upper part of the needle 2, protecting the upper part of the needle 2 and preventing the needle 2 from accidentally puncturing medical staff or patients. Thus, the protective sleeve 3 plays a role in preventing puncture. After use, the blood collection needle is thrown into the medical waste bin. The protective structure can also prevent the personnel collecting medical waste from being punctured, thus improving the safety of the blood collection needle.

[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 and improvements 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. A puncture-resistant blood collection needle, comprising a fixing sleeve (1), characterized in that: The fixed sleeve (1) is fixedly connected to the needle (2) inside. The fixed sleeve (1) is slidably connected to the protective sleeve (3) inside. The protective sleeve (3) is slidably connected to the outer wall of the needle (2). The protective sleeve (3) is slidably connected to the first locking pin (4) inside. The protective sleeve (3) is slidably connected to the second locking pin (6) inside. The first locking pin (4) and the second locking pin (6) are both slidably connected inside the fixed sleeve (1). The protective sleeve (3) is provided with the first spring (5) inside. The protective sleeve (3) is provided with the second spring (7) inside. One end of the first spring (5) is fixedly connected to the inside of the first locking pin (4). The other end of the first spring (5) is fixedly connected to the inside of the protective sleeve (3). One end of the second spring (7) is fixedly connected to the inside of the second locking pin (6). The other end of the second spring (7) is fixedly connected to the inside of the protective sleeve (3).

2. The anti-puncture blood collection needle as described in claim 1, characterized in that: The outer wall of the protective sleeve (3) is fitted with a spring five (12), one end of the spring five (12) is fixedly connected to the inside of the protective sleeve (3), and the other end of the spring five (12) is fixedly connected to the inside of the fixed sleeve (1).

3. The anti-puncture blood collection needle as described in claim 1, characterized in that: The fixed sleeve (1) is slidably connected to a sliding shaft one (8), and the fixed sleeve (1) is slidably connected to a sliding shaft two (10). The outer wall of the sliding shaft one (8) is fitted with a spring three (9), and the outer wall of the sliding shaft two (10) is fitted with a spring four (11).

4. The anti-puncture blood collection needle as described in claim 3, characterized in that: One end of the third spring (9) is fixedly connected to the inside of the first sliding shaft (8), and the other end of the third spring (9) is fixedly connected to the inside of the fixed sleeve (1). One end of the fourth spring (11) is fixedly connected to the inside of the second sliding shaft (10), and the other end of the fourth spring (11) is fixedly connected to the inside of the fixed sleeve (1).

5. The anti-puncture blood collection needle as described in claim 1, characterized in that: The fixed sleeve (1) is fixedly connected to the inside of the blood collection tube (13), the outer wall of the blood collection tube (13) is fixedly connected to the connecting sleeve (14), the lower end of the blood collection tube (13) is fixedly connected to the tail needle (15), and the outer wall of the connecting sleeve (14) is fixedly connected to the connecting block (16).

6. The anti-puncture blood collection needle as described in claim 5, characterized in that: The connecting block one (16) is rotatably connected to the connecting rope (17), the connecting sleeve (14) is slidably connected to the sealing plug (19), the outer wall of the sealing plug (19) is fixedly connected to the connecting block two (18), and the connecting rope (17) is rotatably connected to the inside of the connecting block two (18).

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