Needle and needle shield assembly for medical syringe
The design of the needle tip and needle sheath set with its locking teeth and slots solves the problems of slippage and puncture when removing needles in existing technologies, thus achieving safe and convenient needle collection.
Patent Information
- Application Number
- CN202520127470.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-01-20
AI Technical Summary
When removing the needle from a disposable sterile syringe, the tweezers are prone to slipping, posing a risk of puncturing medical staff, and the operation is inconvenient.
A needle tip and needle sheath set has been designed. The needle sheath body is equipped with locking teeth and locking slots. By matching the locking teeth with the locking slots, the needle tip can be easily removed and safely collected.
It enables the safe and convenient removal and collection of needles, improves operational safety, and avoids the risk of needle pricks.
Smart Images
Figure CN224671895U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical devices, and in particular relates to a needle and needle sheath set for a medical syringe. Background Technology
[0002] With the continuous advancement of medical technology, disposable sterile syringes have become the mainstream, and the needles and needle sheaths used in them place greater emphasis on safety and convenience. The needle, as a key component of the syringe, is typically made of medical-grade stainless steel, possessing good rigidity and toughness to ensure smooth skin penetration and stability during injection. The needle sheath primarily protects the needle from contamination, preventing needle stick injuries to the operator and preventing cross-infection.
[0003] In existing technology, disposable sterile syringes are equipped with needles, and the needles have caps. Healthcare workers only need to remove the caps before use. After injection, the needle needs to be removed from the syringe, and both the needle and syringe need to be collected separately. This step often requires the use of tweezers. Because the tail of the needle is relatively smooth, the tweezers are prone to slipping when grasping the needle tail, and there is a risk of injury to healthcare workers if not handled carefully. Utility Model Content
[0004] In view of the above problems, the purpose of this utility model is to provide a needle and needle sheath set for medical syringes, which aims to solve the above problems.
[0005] The present invention adopts the following technical solution:
[0006] The kit includes a needle body and a needle sheath body. The front end of the needle sheath body has several slots along the circumferential direction. A locking block is formed in each slot on the needle sheath body. The front end of the locking block has a locking tooth. The needle body has a locking groove that matches the locking tooth.
[0007] Furthermore, the needle sleeve body is provided with a movable pressure sleeve.
[0008] Furthermore, retaining rings are formed at both the front and rear ends of the needle sheath body.
[0009] Furthermore, the needle sheath body is provided with a ring of directional arrows.
[0010] The beneficial effects of this utility model are as follows: After the drug injection is completed, the medical staff aligns the front end of the needle sheath body with the needle tip of the needle body, and then puts the needle sheath body on the needle body. When the needle sheath body is in place, all the locking teeth are engaged in the locking grooves. The needle sheath body is locked on the needle body by the locking teeth. Finally, the needle sheath body is pushed outward until the needle body is removed from the syringe. The nursing staff then put the needle body and the syringe into different collection buckets. When the needle body is removed from the syringe, the needle body is always located inside the needle sheath body. Attached Figure Description
[0011] Figure 1 This utility model provides a schematic diagram of the structure of the needle body and the needle sheath body.
[0012] Figure 2 This utility model provides an overall drawing of a needle and needle sheath assembly for a medical syringe.
[0013] Figure 3 This utility model provides a schematic diagram of the card block distribution. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model patent 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 scope of the present utility model.
[0015] To illustrate the technical solution described in this utility model, specific embodiments are described below.
[0016] For ease of explanation, only the parts relevant to the embodiments of this utility model are shown.
[0017] Combination Figure 1-3 As shown, the kit includes a needle body 1 and a needle sheath body 2. The front end of the needle sheath body 2 has several slots 3 along the circumferential direction. A locking block 4 is formed in each slot 3 on the needle sheath body 2. The front end of the locking block 4 has a locking tooth 5 facing inward. The needle body 1 has a locking groove 6, which matches the locking tooth 5.
[0018] With the continuous advancement of medical technology, disposable sterile syringes have become the mainstream, and the needles and needle sheaths used in them place greater emphasis on safety and convenience. The needle, as a key component of the syringe, is typically made of medical-grade stainless steel, possessing good rigidity and toughness to ensure smooth skin penetration and stability during injection. The needle sheath primarily protects the needle from contamination, preventing needle stick injuries to the operator and preventing cross-infection.
[0019] The finished disposable sterile syringe is equipped with a needle, which has a needle sheath. Medical personnel only need to remove the needle sheath before use. After the medication is injected, the needle body can be removed from the syringe using the needle sheath itself. Specifically, the medical personnel align the front end of the needle sheath with the needle tip of the needle body, then insert the needle tip through the front end of the needle sheath until the needle sheath is fitted over the needle body. Once the needle sheath is fully in place, all the locking teeth engage with the slots, securing the needle sheath to the needle body. Finally, pull the needle sheath outwards until the needle body is detached from the syringe. The medical personnel then place the needle body and syringe into separate collection containers. As can be seen, the entire process of removing the needle body from the syringe using the needle sheath is relatively simple and has a high safety factor. Furthermore, after the needle body is detached from the syringe, it remains within the needle sheath.
[0020] like Figure 1-2 The needle sheath body 2 is provided with a ring of directional arrows 7. In Figures 1-2, the directional arrows indicate the front end of the needle sheath body. When medical personnel use the needle sheath body to remove the needle from the syringe, the directional arrows can clearly distinguish the front and rear ends of the needle sheath body.
[0021] As a preferred structure, such as Figure 2 The needle sheath body 2 is equipped with a movable pressure sleeve 8 (the pressure sleeve is not freely movable). After the medication injection is completed, medical personnel need to put the needle sheath body onto the needle body as required. Once the needle sheath body is in place, all the locking teeth are engaged in the locking grooves. Then, the pressure sleeve is moved until it completely covers the groove opening. Finally, the needle sheath body is pulled outwards until the needle body is detached from the syringe. In the above process, the pressure sleeve prevents the locking blocks from expanding outwards, ensuring that the locking teeth 5 of the locking blocks 4 are always within the locking grooves 6, so that the needle body can smoothly detach from the syringe when the needle sheath body is pulled out. Under normal circumstances, the pressure sleeve is not required; the pressure sleeve is the preferred structure.
[0022] As a specific structure, such as Figure 1 The needle sheath body 2 has retaining rings 9 at both its front and rear ends. The needle tip body 1 has a tail ring 10 at its tail end. Whether the needle tip of the needle tip body is inserted from the front port or the rear port of the needle sheath body, when the needle sheath body is completely fitted onto the needle tip body, the retaining rings at the corresponding positions contact the tail rings respectively. During this process, the retaining rings play a limiting role.
[0023] 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 needle and needle sheath set for a medical syringe, characterized in that: The kit includes a needle body and a needle sheath body. The front end of the needle sheath body has several slots along the circumferential direction. A locking block is formed in each slot on the needle sheath body. The front end of the locking block has a locking tooth. The needle body has a locking groove that matches the locking tooth.
2. The needle and needle sheath set for a medical syringe as described in claim 1, characterized in that: The needle sleeve body is provided with a movable pressure sleeve.
3. The needle and needle sheath set for a medical syringe as described in claim 2, characterized in that: Both ends of the needle sheath body have retaining rings.
4. The needle and needle sheath set for a medical syringe as described in claim 3, characterized in that: The needle sheath body is provided with a ring of directional arrows.