Infusion guide needle
By designing an infusion guide needle with an on-off valve and a blocking group, the problem of leakage and dripping of the infusion needle before use and the infusion needle is solved, and the effective utilization and safe use of the infusion liquid is achieved.
Patent Information
- Application Number
- CN202421604766.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-09
AI Technical Summary
Existing infusion needles are prone to leaking the medicine liquid before use, and the medicine liquid drips after use and there is a risk of stabbing.
An infusion guide needle is designed, which contains a needle tube and needle fixed together, with an on- and switch valve and a shading group. The valve stem is controlled to open or close the needle tube by rotating the stop to avoid leakage and dripping of the liquid, and prevent the needle from injuring people through the shading group.
It effectively avoids leakage of drug liquid before infusion and dripping of drug liquid after infusion, prevents needle stabbing, and improves the safety of use and the utilization rate of drug liquid.
Smart Images
Figure CN223143878U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of infusion, and particularly relates to an infusion guiding needle. Background Art
[0002] Intravenous infusion is a method of injecting a large amount of sterile liquid, electrolyte, and drug into the body by using the principles of atmospheric pressure and hydrostatic pressure. An intravenous infusion needle is used to connect a syringe, an infusion set, and a blood transfusion set for intravenous infusion of liquid medicine and blood transfusion.
[0003] After the infusion tube is inserted into the medicine bottle, some preparations such as hanging the medicine bottle are required before using the infusion needle. At this time, there will be some drug leakage from the infusion needle. Moreover, after the infusion is completed, during the process of discarding, the liquid medicine in the infusion tube will also drip everywhere. At the same time, the discarded infusion needle is also likely to stab people more easily. Content of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides an infusion guiding needle.
[0005] In order to achieve the above object, the utility model provides the following technical solution. An infusion guiding needle includes a needle tube and a needle head fixed together. A handle is further fixed on the outer peripheral side of the needle tube. It is characterized in that: clamping blocks are fixed on both end faces of the handle, a clamping groove is arranged on the clamping block, and a switching valve is further arranged in the needle tube;
[0006] The switching valve includes a valve core in the needle tube. Two symmetrical valve rods are fixed on the valve core. The valve rods penetrate through the needle tube. A shielding group is arranged on both valve rods to cover the needle head through the shielding group.
[0007] Optionally, each shielding group includes a first blocking block and a second blocking block. Two clamping strips are arranged on the end face of the second blocking block close to the needle head. The material of the clamping strip can be one of resin and rubber. A square sliding block is fixed at the end of the end face of the second blocking block on the side of the needle head.
[0008] Optionally, a sliding groove is formed on the end face of the first blocking block close to the needle head. The sliding block is located in the sliding groove and is slidably connected with it. A groove is further formed in the first blocking block. The groove communicates with the sliding groove. An abutting plate is connected in the groove through a rotating shaft. A torsion spring is further installed on the rotating shaft.
[0009] Optionally, a through valve hole is formed in the valve core. A wire wheel is fixed on the end face of the valve rod far from the valve core. A pull rope is connected between the wire wheel and the abutting plate.
[0010] Optionally, an arc-shaped notch is formed on the outer peripheral side of the valve rod. A limiting block is fixed in the first blocking block. The limiting block is located in the arc-shaped notch.
[0011] Optionally, the radian of the arc-shaped notch is between 0 and 10 degrees.
[0012] In summary, the present utility model has the following beneficial effects compared with the prior art:
[0013] 1. Due to the setting of the switching valve, the syringe can be opened and closed by rotating the first stopper, which can effectively avoid the leakage of the liquid medicine from the infusion needle before infusion and cause waste. Moreover, by closing the syringe, it can effectively avoid the residual liquid medicine in the infusion tube from dripping everywhere after the infusion ends.
[0014] 2. Due to the setting of the shielding group, the discarded needle can be prevented from hurting people by the shielding of the second stopper and the first stopper. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a perspective view of the present utility model.
[0016] Figure 2 is a front view of the present utility model.
[0017] Figure 3 is of the present utility model Figure 2 the enlarged view of part A.
[0018] Figure 4 is of the present utility model Figure 2 the enlarged view of part B.
[0019] 10. Syringe; 11. Needle; 12. Handle; 13. Block; 14. First stopper; 15. Second stopper; 16. Slide block; 17. Slide groove; 18. Groove; 19. Valve core; 20. Valve rod; 21. Valve hole; 22. Pull rope; 23. Contact plate; 24. Wire wheel; 25. Limit block; 26. Card strip. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] In order to enable those skilled in the art of the present technology to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.
[0021] As shown in Figures 1-4, an infusion guiding needle includes a needle tube 10 and a needle head 11 fixed together. A handle 12 is also fixed on the outer peripheral side of the needle tube 10. It is characterized in that: clamping blocks 13 are fixed on both end faces of the handle 12, and clamping grooves are provided on the clamping blocks 13. A switching valve is also provided in the needle tube 10. The switching valve includes a valve core 19 in the needle tube 10. Two symmetrical valve rods 20 are fixed on the valve core 19. The valve rods 20 penetrate through the needle tube 10. Obstructing groups are provided on both valve rods 20 to cover the needle head through the obstructing groups. An arc-shaped notch is formed on the outer peripheral side of the valve rod 20. A limiting block 25 is fixed in the first blocking block 14. The limiting block 25 is located in the arc-shaped notch. The radian of the arc-shaped notch is between 0 and 10 degrees.
[0022] Each obstructing group includes a first blocking block 14 and a second blocking block 15. Two clamping strips 26 are provided on the end face of the second blocking block 15 close to the needle head 11. The material of the clamping strips 26 can be one of resin and rubber. A square slider 16 is fixed at the end of the end face of the second blocking block 15 on the side of the raw material needle head 11. A sliding groove 17 is formed on the end face of the first blocking block 14 close to the needle head 11. The slider 16 is located in the sliding groove 17 and is slidably connected thereto. A groove 18 is also formed in the first blocking block 14. The groove 18 communicates with the sliding groove 17. An abutting plate 23 is connected in the groove 18 through a rotating shaft. A torsion spring is also installed on the rotating shaft. A through valve hole 21 is formed in the valve core 19. A wire wheel 24 is fixed on the end face of the valve rod 20 far from the valve core 19. A pull rope 22 is connected between the wire wheel 24 and the abutting plate 23.
[0023] When in use, when the infusion needle needs to be used, rotate the obstructing group. At this time, the first blocking block 14 rotates while the valve rod 20 does not rotate. Therefore, the wire wheel 24 pulls the abutting plate 23 through the pull rope 22 to overcome the elastic force of the torsion spring, so that the abutting plate 23 rotates to the horizontal. At this time, there is no blocking object for the slider 16. At this time, the second blocking block 15 can be retracted into the first blocking block 14. Then continue to rotate the first blocking block 14. At this time, the valve rod 20 is driven to rotate synchronously through the limiting block 25. The rotation of the valve rod 20 can drive the valve core 19 to rotate, so that the valve hole 21 communicates with the space in the needle tube 10. When the first blocking block 14 rotates to the handle 12, the second blocking block 15 can be further pushed, so that the clamping strips 26 on the second blocking block 15 are clamped in the clamping grooves of the clamping blocks 13. At this time, the infusion needle can be used to avoid the leakage of the liquid medicine from the infusion needle before infusion.
[0024] After the infusion is finished, pull out the second stopper 15 from the card block 13, and then rotate the first stopper 14 in the reverse direction to gradually seal the needle tube 10 by the valve core 19, effectively avoiding the residual liquid medicine in the infusion tube from dripping everywhere. When it is rotated to be parallel to the needle 11, the wire wheel 24 will loosen the pull rope 22, so that the abutting plate 23 is reset under the action of the torsion spring. Then pull the second stopper 15 until the second stopper 15 is completely pulled out of the first stopper 14 and is caught by the abutting plate 23. At this time, the needle can be blocked by the second stopper 15 to avoid the discarded needle from hurting people.
[0025] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
Claims
1. An infusion guiding needle, comprising a needle tube (10) and a needle head (11) fixed together, and a handle (12) is further fixed on the outer peripheral side of the needle tube (10), and is characterized in that: On both end faces of the handle (12), clamping blocks (13) are fixed. Groove slots are provided on the clamping blocks (13). A switching valve is further provided in the syringe barrel (10). The switching valve includes a valve core (19) inside the syringe barrel (10). Two symmetrical valve rods (20) are fixed on the valve core (19). The valve rods (20) penetrate through the syringe barrel (10). Shielding groups are provided on the two valve rods (20) to cover the needle head through the shielding groups.
2. The infusion guiding needle according to claim 1, characterized in that: Each shielding group includes a first blocking block (14) and a second blocking block (15). On one end face of the second blocking block (15) close to the needle head (11), two clamping strips (26) are provided. The material of the clamping strips (26) can be one of resin and rubber. At the end of one end face of the second blocking block (15) facing the needle head (11), a square sliding block (16) is fixed.
3. The infusion guiding needle according to claim 2, characterized in that: On one end face of the first blocking block (14) close to the needle head (11), a sliding groove (17) is formed. The sliding block (16) is located in the sliding groove (17) and is slidably connected thereto. A groove (18) is further formed in the first blocking block (14). The groove (18) communicates with the sliding groove (17). An abutting plate (23) is connected in the groove (18) through a rotating shaft. A torsion spring is further installed on the rotating shaft.
4. The infusion guiding needle according to claim 3, characterized in that: A through valve hole (21) is formed in the valve core (19). On one end face of the valve rod (20) away from the valve core (19), a wire wheel (24) is fixed. A pulling rope (22) is connected between the wire wheel (24) and the abutting plate (23).
5. The infusion guiding needle according to claim 2, wherein: An arc-shaped notch is formed on the outer peripheral side of the valve rod (20). A limiting block (25) is fixed in the first blocking block (14). The limiting block (25) is located in the arc-shaped notch.
6. The infusion guiding needle according to claim 5, wherein: The radian size of the arc-shaped notch is between 0 and 10 degrees.