Structure for preventing spiral needle from being pulled out and protecting needle tip
The design of the spiral retaining spring and the base retaining groove solves the problem of the spiral needle being easily pulled out during use, and achieves effective protection of the needle tip.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-04-03
AI Technical Summary
In existing technologies, spiral needles are easily pulled out when the spiral cap is put on, and the needle tip protection is ineffective.
The design incorporates a spiral retainer and a base retainer to hold the spiral needle in place on the spiral base, while a cap retainer restricts the sliding position of the spiral base to protect the needle tip.
It effectively prevents the spiral needle from being pulled out, avoids contact between the needle tip and the spiral cap, and protects the needle tip from damage.
Smart Images
Figure CN224070908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, and in particular to a spiral needle anti-pulling and needle tip protection structure. Background Technology
[0002] A spiral needle is a commonly used medical device that connects to a plug via a cable. During use, the spiral needle often needs to be pressed into a corresponding spiral base, and a spiral cap needs to be placed on the base. On the one hand, if the spiral needle is not securely pressed into the base, it can easily be pulled out during use. On the other hand, when putting on the spiral cap, the needle tip can easily touch the cap, causing damage to the tip. Utility Model Content
[0003] To solve the above problems, this utility model provides a structure for preventing the spiral needle from being pulled out and protecting the needle tip. It uses a spiral retaining spring and a base retaining groove to hold the spiral needle on the spiral base, thereby preventing it from being pulled out. At the same time, the cap retaining groove restricts the sliding position of the spiral base to prevent the needle tip from hitting the spiral cap, thus achieving the effect of protecting the needle tip.
[0004] According to one aspect of the present invention, a structure for preventing the spiral needle from being pulled out and for protecting the needle tip is provided. The structure is installed on the needle tip at the top of the spiral needle, and a spiral retaining spring is sleeved on the needle tip. The spiral retaining spring includes a spiral base and a spiral cap, with the spiral cap covering the spiral base.
[0005] The spiral base has a through hole running vertically through it, and a base retaining groove is provided in the through hole. The needle tip is inserted into the through hole and the spiral retaining spring is engaged in the base retaining groove.
[0006] The spiral cap has an inner cavity, and a cap groove is provided at the lower part of the inner cavity. The top of the spiral base is engaged in the cap groove.
[0007] In some embodiments, the lower end of the spiral needle is connected to a plug via a cable. The advantage is that the specific structure of the spiral needle is further described.
[0008] In some embodiments, the end of the helical retainer extends into the cavity. This is advantageous because the heat-sealed cavity can accommodate the end of the helical retainer.
[0009] In some embodiments, the size of the screw cap gradually decreases from the bottom to the top. This is advantageous because it describes the size design of the screw cap, facilitating the engagement of the cap slot with the screw base.
[0010] In some embodiments, the cap slot is located in the lower part of the inner cavity. This is advantageous because it allows space to be left in the upper part of the inner cavity to accommodate the helical retaining spring.
[0011] In some embodiments, the top of the screw cap has an opening communicating with the inner cavity. This is advantageous because it further prevents the top of the screw cap from contacting the tip of the screw needle. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of a spiral needle's anti-pull-out and needle tip protection structure according to one embodiment of the present invention.
[0013] Figure 2 for Figure 1 The diagram shows the structure of the spiral needle.
[0014] Figure 3 for Figure 1 The diagram shows the upper internal structure of a spiral needle's anti-pull-out and needle tip protection structure.
[0015] In the diagram: 1. Spiral needle; 2. Spiral base; 3. Spiral cap; 11. Spiral retaining ring; 12. Cable; 13. Plug; 21. Through hole; 22. Base slot; 31. Inner cavity; 32. Cap slot; 33. Opening. Detailed Implementation
[0016] The present invention will now be described in further detail with reference to the accompanying drawings.
[0017] like Figure 1-3 As shown, the structure mainly includes a spiral base 2 and a spiral cap 3, which are mounted on a spiral needle 1. One end of the spiral needle 1 (designated as the upper end and the other end as the lower end) has a needle tip, and the other end is connected to a cable 12, which is connected to a plug 13. A spiral retaining spring 11 is fitted on the needle tip of the spiral needle 1, and the top end of the spiral retaining spring 11 extends above the spiral needle 1.
[0018] The spiral base 2 has a through hole 21 running vertically through it. The through hole 21 can fit the tip of the spiral needle 1. At the same time, a base groove 22 is also provided in the through hole 21. The diameter of the base groove 22 is larger than that of the through hole 21. When the tip of the spiral needle 1 is pressed into the spiral base 2, part of the spiral retaining spring 11 on the spiral needle 1 will fall into the base groove 22 in the through hole 21 of the spiral base 2 and be locked in place by the base groove 22. This makes the spiral needle 1 stably locked inside the spiral base 2 and prevents it from being pulled out by external force during use.
[0019] A spiral cap 3 covers the spiral base 2, and an inner cavity 31 is provided on the spiral cap 3. The end of the spiral retaining spring 11 extends into the inner cavity 31. The size of the spiral cap 3 gradually decreases from the bottom to the top, and a cap groove 32 is provided at the lower part of the inner cavity 31. The diameter of the cap groove 32 is larger than the size of the inner cavity 31. The top of the spiral base 2 is locked in the cap groove 32, so that the spiral base 2 will not slide upward and avoid the tip of the spiral needle 1 from hitting the top of the spiral cap 3 and causing damage.
[0020] Preferably, the top of the spiral cap 3 has an opening 33 that communicates with the inner cavity 31, so that even if the tip of the spiral needle 1 extends into the inner cavity 31, it can avoid contact with the top of the spiral cap 3 and causing damage.
[0021] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. A structure for preventing a helical needle from being pulled out and protecting a needle tip, which is installed on a needle tip at a top end of a helical needle (1), and a helical clip spring (11) is fitted on the needle tip, characterized in that: It comprises a spiral base (2) and a spiral cap (3) covering the spiral base (2); The spiral base (2) has a through hole (21) in the inside, and a circle of base clamping grooves (22) is arranged in the through hole (21), the needle tip is inserted into the through hole (21), and the spiral clamping spring (11) is clamped in the base clamping grooves (22); The spiral cap (3) has an inner cavity (31) in the inside, and a circle of cap clamping grooves (32) is arranged in the lower part of the inner cavity (31), and the top of the spiral base (2) is clamped in the cap clamping grooves (32).
2. A needle retraction and needle tip cover structure for a helical needle as defined in claim 1, wherein: The lower end of the spiral needle (1) is connected with a plug (13) through a cable (12).
3. The needle retraction and needle tip protector for a helical needle of claim 1, wherein: The end of the spiral clamping spring (11) extends into the inner cavity (31).
4. The needle retraction and tip protector of claim 1, wherein: The size of the spiral cap (3) gradually decreases from the lower end to the upper end.
5. The needle retraction and needle tip protector for a helical needle of claim 1, wherein: The cap clamping grooves (32) are located in the lower part of the inner cavity (31).
6. The needle retraction and tip protector for a helical needle of claim 1, wherein: The top of the spiral cap (3) has an opening (33) communicating with the inner cavity.