Retractable puncture needle
By designing a shrinkable structure in the a moor vein puncture needle, the combination of the protective cover, the card axis, the card slot and the spring is used to solve the problem of exposing the needle after use, and improve the safety and convenience.
Patent Information
- Application Number
- CN202420498728.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-14
AI Technical Summary
After the use of existing arteriovenous needles, the tip of the needle at the front end of the needle is easily exposed, resulting in secondary injuries to medical staff or patients, and there are hidden dangers in the subsequent recycling process.
Design a pestable needle that can shrink. By setting up a cover outside the needle handle and needle, and using the structure of the card axis, card slot, and spring, the needle automatically retracts back to the sheath after use to avoid exposure.
Effectively avoid the risk of exposing the needle after use, reduce the possibility of secondary damage, and improve the safety and convenience of the use of puncture needles.
Smart Images
Figure CN222398654U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical appliances, and in particular relates to a retractable puncture needle. Background Art
[0002] Arteriovenous puncture is often used for blood tests and infusion therapy, while arterial puncture is most commonly used for continuous arterial blood pressure monitoring during anesthesia or surgery and in critically ill patients. It is also used for special examinations or treatments, such as blood gas analysis, selective angiography and treatment, cardiac catheterization and hemodialysis treatment.
[0003] When implementing the above operation, an arteriovenous puncture needle is required, which is mainly composed of a needle, a needle handle, a tube body, a stop clamp, a joint, etc. When the existing arteriovenous puncture needle is in use, when the medical staff pulls the needle out of the patient's blood vessel, the needle tip at the front end of the needle is still exposed to the outside, and the needle tip can easily injure the medical staff or the patient's body, causing secondary injury. At the same time, when the needle is exposed to the outside, the above situation is also likely to occur during the subsequent collection and recovery of the arteriovenous puncture needle, which poses certain hidden dangers. Utility Model Content
[0004] In order to solve the above-mentioned problems existing in the prior art, the utility model provides a retractable puncture needle. After puncture, after the clamping shaft limit state is released, the needle can be retracted into the sheath by itself under the elastic force of the spring to avoid exposure of the needle after use. The structural design is ingenious and the operation is simple and convenient.
[0005] To achieve the above object, the utility model provides the following technical solutions: a retractable puncture needle, comprising a sheath, a needle handle, a needle head and a tube body, the front end of the sheath is provided with a front opening, the rear end of the sheath is provided with a rear opening, the upper end of the sheath is provided with a slide groove, and the front right side of the slide groove is provided with a card slot;
[0006] A needle handle is slidably connected inside the front end of the sheath, a needle head is fixedly connected to the front end of the needle handle and the needle head is movably connected to the front opening, a clamping shaft is fixedly connected to the upper rear end of the needle handle, a sliding block is fixedly connected to the upper end of the clamping shaft and the sliding block is slidably connected to the sheath, a spring is fixedly connected between the rear end of the needle handle and the rear end of the sheath, and a tube body is fixedly connected to the rear end of the needle handle and the tube body is movably connected to the rear opening.
[0007] As a preferred technical solution of a retractable puncture needle of the utility model, a flow-stop clamp is sleeved and connected to the outside of the rear end of the tube body, and a joint is fixedly connected to the rear end of the tube body.
[0008] As a preferred technical solution of a retractable puncture needle of the utility model, wing strips are fixedly connected to both the left and right sides of the sheath, and anti-slip particles are integrally formed on the surface of the wing strips.
[0009] As a preferred technical solution of a retractable puncture needle of the utility model, a notch is provided at the rear end of the clamping slot, and the clamping shaft is clamped and connected with the notch.
[0010] As a preferred technical solution of a retractable puncture needle of the utility model, a plurality of anti-slip convex strips are integrally formed on the upper end of the sliding block.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] The utility model provides a sheath outside the needle handle and the needle. When used for puncture, the needle is pushed out of the sheath and limited by the engagement of the clamping shaft and the clamping groove to complete the puncture of the artery and vein. After the puncture is used, the clamping shaft is released and the needle can be retracted into the sheath by itself under the elastic force of the spring to avoid exposure of the needle after use. The structure is cleverly designed and the operation is simple and convenient. It can effectively avoid the situation in which the needle tip at the front end of the needle is still exposed to the outside when the medical staff pulls the needle out of the patient's blood vessel during use of the existing arteriovenous puncture needle, and the needle tip can easily stab the body of the medical staff or the patient, causing secondary injury. At the same time, when the needle is exposed to the outside, the above situation is also likely to occur during the subsequent collection and recovery of the arteriovenous puncture needle, which has certain hidden dangers, thereby facilitating the use of the puncture needle and making it better to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the local connection structure of the sheath of the utility model;
[0016] Figure 3 It is a schematic diagram of the partial disassembly structure of the sheath of the utility model;
[0017] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the sheath of the utility model.
[0018] In the figure: 1, sheath; 2, wing strip; 3, anti-skid particles; 4, front opening; 5, rear opening; 6, slide groove; 7, clamping groove; 8, notch; 9, needle handle; 10, needle head; 11, clamping shaft; 12, slider; 13, anti-skid convex strip; 14, spring; 15, tube body; 16, stop clamp; 17, connector. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] Example
[0021] See also Figure 1-4 The utility model provides the following technical solutions: a retractable puncture needle, comprising a sheath 1, a needle handle 9, a needle head 10 and a tube body 15, the left and right sides of the sheath 1 are fixedly connected with wing strips 2, and the surface of the wing strips 2 is integrally formed with anti-skid particles 3, the front end of the sheath 1 is provided with a front opening 4, the rear end of the sheath 1 is provided with a rear opening 5, the upper end of the sheath 1 is provided with a slide groove 6, the front right side of the slide groove 6 is provided with a card slot 7, and the rear end of the card slot 7 is provided with a notch 8, wherein the particles of the wing strip 2 with the anti-skid particles 3 are used to facilitate the sheath 1 to be picked up and used by hand;
[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, further, a needle handle 9 is slidably connected to the front end of the sheath 1, a needle head 10 is fixedly connected to the front end of the needle handle 9, and the needle head 10 is movably connected to the front opening 4, a clamping shaft 11 is fixedly connected to the upper rear end of the needle handle 9, and the clamping shaft 11 is engaged with the notch 8, a slider 12 is fixedly connected to the upper end of the clamping shaft 11, and the slider 12 is slidably connected to the sheath 1, and a plurality of anti-slip convex strips 13 are integrally formed on the upper end of the slider 12, a spring 14 is fixedly connected between the rear end of the needle handle 9 and the rear end of the sheath 1, a tube body 15 is fixedly connected to the rear end of the needle handle 9, and the tube body 15 is movably connected to the rear opening 5 The needle handle 9 and the needle 10 are connected, wherein before and after puncture, the needle handle 9 and the needle 10 are hidden in the sheath 1. When in use, the needle 10 is pushed out for puncture, and can be elastically retracted and reset after use. The slider 12 with the anti-slip convex strip 13 and the clamping shaft 11 cooperate with the slide groove 6 on the sheath 1 and the clamping groove 7 with the notch 8 to realize the pushing control of the needle handle 9 and the needle 10 in the sheath 1, and with the help of the resilience of the spring 14, after the limiting state of the clamping shaft 11 is released, the needle handle 9 and the needle 10 can be automatically retracted into the sheath 1 to avoid the needle 10 being exposed after use;
[0023] Reference Figure 1 As shown, further, the rear end of the tube body 15 is externally sleeved and connected with a flow stop clamp 16, and the rear end of the tube body 15 is fixedly connected with a connector 17, wherein the flow stop clamp 16 and the connector 17 are existing structures of the existing puncture needle, and will not be described in detail one by one here.
[0024] In this embodiment, the utility model is provided with a sheath 1 outside the needle handle 9 and the needle 10. When used for puncture, the needle 10 is pushed out of the sheath 1 and is limited by the engagement of the clamping shaft 11 with the clamping slot 7 to complete the puncture of the artery and vein. After the puncture is used, after the limiting state of the clamping shaft 11 is released, the needle 10 can be automatically retracted into the sheath 1 under the elastic force of the spring 14 to avoid the exposure of the needle 10 after use. The structural design is ingenious and the operation is simple and convenient. It can effectively avoid the situation that when the existing arteriovenous puncture needle is used, when the medical staff pulls the needle 10 out of the patient's blood vessel, the needle tip at the front end of the needle 10 is still exposed to the outside, and the needle tip is easy to stab the medical staff or the patient's body, causing secondary injury. At the same time, when the needle 10 is exposed to the outside, the above situation is also easy to occur when the subsequent arteriovenous puncture needle is collected and recovered, and there are certain hidden dangers, thereby facilitating the use of the puncture needle and making it better to use.
[0025] The use process and working principle of the utility model are as follows: when used for puncture, the slider 12 and the clamping shaft 11 push the needle handle 9 and the needle 10 forward, so that the needle 10 extends out of the sheath 1. During this process, the needle 10 can slide forward relative to the slide groove 6, and the spring 14 and the tube body 15 are stretched forward by the needle handle 9, and then the clamping shaft 11 is rotated to the right by the slider 12, so that the clamping shaft 11 is clamped in the clamping groove 7 and engaged with the notch 8, and then the slider 12 is released, so that the needle 10 is pushed out of the sheath 1 and limited and fixed, so that the needle 10 can be used normally. After the needle 10 completes the arterial and venous puncture, the needle 10, the sheath 1 and part of the tube body 15 are fixed on the human skin by tape or adhesive tape, and then the joint 17 is further connected to the external infusion tube or blood collection tube, and the stop clamp 16 is untied to perform infusion and blood collection operations;
[0026] After puncture, after tearing off the adhesive tape fixed on it, press the puncture wound with a cotton swab or cotton patch in the left hand, then rotate the clamping shaft 11 to the left by the slider 12 to move the clamping shaft 11 into the slide groove 6, and then release the slider 12. Under the elastic recovery action of the spring 14, the needle handle 9 and the needle 10 can be automatically reset and retracted, so that the needle 10 is stored in the sheath 1, which can effectively prevent the needle 10 from being exposed after use and stabbing medical staff or patients.
[0027] In addition, the contents not described in detail in this embodiment are all prior art and common knowledge.
[0028] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A retractable puncture needle, characterized in that: The invention comprises a sheath (1), a needle handle (9), a needle head (10) and a tube body (15); the front end of the sheath (1) is provided with a front opening (4); the rear end of the sheath (1) is provided with a rear opening (5); the upper end of the sheath (1) is provided with a slide groove (6); and the front right side of the slide groove (6) is provided with a clamping groove (7); A needle handle (9) is slidably connected inside the front end of the sheath (1), a needle head (10) is fixedly connected to the front end of the needle handle (9), and the needle head (10) is movably connected to the front opening (4), a clamping shaft (11) is fixedly connected to the upper rear end of the needle handle (9), a sliding block (12) is fixedly connected to the upper end of the clamping shaft (11), and the sliding block (12) is slidably connected to the sheath (1), a spring (14) is fixedly connected between the rear end of the needle handle (9) and the rear end of the sheath (1), and a tube body (15) is fixedly connected to the rear end of the needle handle (9), and the tube body (15) is movably connected to the rear opening (5).
2. A retractable puncture needle according to claim 1, characterized in that: The rear end of the tube body (15) is sleeved and connected to a flow-stop clamp (16), and the rear end of the tube body (15) is fixedly connected to a joint (17).
3. The retractable puncture needle according to claim 1, characterized in that: The left and right sides of the protective cover (1) are both fixedly connected with wing strips (2), and the surface of the wing strips (2) is integrally formed with anti-skid particles (3).
4. The retractable puncture needle according to claim 1, characterized in that: A notch (8) is provided at the rear end of the clamping slot (7), and the clamping shaft (11) is clamped and connected to the notch (8).
5. The retractable puncture needle according to claim 1, characterized in that: The upper end of the sliding block (12) is integrally formed with a plurality of anti-slip convex strips (13).