Anti-falling device for infusion needle in field environment
By designing an anti-detachment mechanism on the infusion needle, and using the spiral sleeve and limiting assembly to form a stable right-angle triangle structure, the problem of the infusion needle being released in the field environment is solved to ensure the safety of infusion.
Patent Information
- Application Number
- CN202510605163.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2025-08-15
AI Technical Summary
Existing infusion needles are prone to escape from the infusion bottle due to gravity or shaking in the wild environment, resulting in the risk of contamination and air entering the patient's blood vessels.
An anti-detachment mechanism is designed, including a fixed sleeve, a spiral sleeve and a limiting assembly. Through the rotation of the threaded sleeve and the sliding of the limiting assembly, a stable right-angle triangle structure is formed to ensure that the needle is in close contact with the bottom wall of the infusion bottle and prevent it from being detached.
Effectively prevent the infusion needle from being released from the infusion bottle under gravity or shaking conditions, reducing the risk of needle contamination and air entering the patient's blood vessels.
Smart Images
Figure CN120478766A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical devices, and in particular to an anti-dropout device for an infusion needle used in a field environment. Background Art
[0002] Infusion is a large dose (more than 50 ml for a single dose) of injection that is administered intravenously into the body. It is usually packaged in glass or plastic infusion bottles or bags and does not contain preservatives or antibacterial agents. When used, the drip rate is adjusted through the infusion set to continuously and evenly enter the vein to replenish body fluids, electrolytes, and other nutrients, and to supplement blood and products to replenish colloids and blood volume.
[0003] The existing device uses squeezing force to make multiple sets of elastic anti-dropping sheets bulge outwards, thereby increasing the diameter of the infusion set in the bottle body to prevent the infusion head from falling out of the bottle body. However, in actual operation, the existing anti-dropping elastic cover has a lantern-shaped structure when limiting the position. Since the lantern-shaped structure gradually increases in diameter from the upper and lower sides to the middle, when the infusion bottle is inserted for limiting the position, the device may move downward as a whole under the action of gravity or during shaking, thereby causing the needle to fall out of the infusion bottle, which may further cause accidents such as needle contamination and the introduction of air into the patient's blood vessels. Summary of the Invention
[0004] In order to solve the above problems, the purpose of the present invention is to provide an anti-dropout device for infusion needles in outdoor environments, which solves the problem of the needle falling out of the infusion bottle in the prior art.
[0005] To achieve the above object, the present invention adopts the following technical solutions:
[0006] A device for preventing an infusion needle from falling off in a field environment comprises an infusion needle and an anti-falling mechanism sleeved on the outside of the infusion needle; a mounting ring groove with a threaded lower outer side is provided around the outer side of the lower portion of the infusion needle, and the anti-falling mechanism is sleeved in the mounting ring groove; the anti-falling mechanism comprises a fixed sleeve fixedly sleeved on the outer side of the upper portion of the mounting ring groove, a spiral sleeve threadedly sleeved on the outer side of the lower portion of the mounting ring groove, and a plurality of limiting assemblies arranged at intervals along the circumference of the infusion needle; each group of limiting assemblies comprises a first rotating rod hinged at the top end to the upper part of one side of the fixed sleeve, an annular slide rail circumferentially embedded in the upper part of the spiral sleeve, and a second rotating rod with the top end slidingly arranged in the annular slide rail and the bottom end hinged to the bottom end of the first rotating rod on the corresponding side.
[0007] More preferably, a protrusion is fixedly provided on one side of the lower portion of the threaded sleeve.
[0008] More preferably, the inner side surface of the second rotating rod is covered with an elastic rubber layer.
[0009] More preferably, the threaded sleeve is formed by splicing two mutually engaged threaded half shells, and the protrusion is fixed on the outside of one of the threaded half shells.
[0010] The present invention has the following beneficial effects:
[0011] In the present invention, when the spiral sleeve is rotated to the lowest position, a stable right triangle is formed between the second rotating rod, the first rotating rod and the infusion needle. Under the action of gravity, the second rotating rod abuts against the bottom wall of the infusion bottle. At this time, since the second rotating rod is arranged horizontally and the outer end extends to the outside of the outer wall of the infusion needle, it is difficult for the entire device to move downward as a whole even under the action of gravity or shaking, thereby preventing the infusion needle from falling out of the infusion bottle as much as possible, and further preventing the infusion needle from falling out of the infusion bottle, causing needle contamination, air entering the patient's blood vessels, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a front view of the anti-slip device;
[0013] Figure 2 This is a front sectional view of the anti-slip device (limit release state);
[0014] Figure 3 This is a front sectional view of the anti-slip device (limited state);
[0015] Figure 4 This is a top sectional view of the anti-slip device (cut from the point where the threaded sleeve is provided with a slide rail).
[0016] Description of reference numerals:
[0017] 1. Infusion needle; 11. Mounting ring groove; 2. Anti-slip mechanism; 21. Fixed sleeve; 22. Threaded sleeve; 221. Protrusion; 222. Threaded half shell; 23. Limiting assembly; 231. First rotating rod; 232. Slide rail; 233. Second rotating rod; 234. Elastic rubber layer. DETAILED DESCRIPTION
[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0019] A device for preventing an infusion needle from falling off in a field environment comprises an infusion needle 1 and an anti-falling mechanism 2 sleeved on the outside of the infusion needle 1; a mounting ring groove 11 with a threaded lower outer side is provided around the lower outer side of the infusion needle 1, and the anti-falling mechanism 2 is sleeved in the mounting ring groove 11; the anti-falling mechanism 2 comprises a fixed sleeve 21 fixedly sleeved on the upper outer side of the mounting ring groove 11, a spiral sleeve 22 threadedly sleeved on the lower outer side of the mounting ring groove 11, and a plurality of limiting components 23 arranged at intervals along the circumference of the infusion needle 1; each group of limiting components 23 comprises a first rotating rod 231 with a top hinged to the upper part of one side of the fixed sleeve 21, an annular slide rail 232 circumferentially embedded in the upper part of the spiral sleeve 22, and a second rotating rod 233 with a top end slidingly arranged in the annular slide rail 232 and a bottom end hinged to the bottom end of the first rotating rod 231 on the corresponding side.
[0020] When in use, first insert the infusion needle 1 upward from the bottom of the infusion bottle until the bottom of the infusion bottle is located in the middle of the spiral sleeve 22. At this time, the first rotating rod 231 and the second rotating rod 233 are both located in the infusion bottle. Grip the threaded sleeve 22 and rotate it downward to the lowest position, so that the top of the second rotating rod 233 moves downward with the rotation of the threaded sleeve 22 and slides in the annular slide rail 232. Since the bottom of the second rotating rod 233 is hinged to the first rotating rod 231 on the corresponding side, and the top of the first rotating rod 231 is hinged to the fixed sleeve 21, the second rotating rod 233 gradually rotates obliquely to the horizontal direction, and at the same time pushes the bottom end of the first rotating rod 231 outward, forming a Figure 3 The second rotating rod 233 is in a state where the bottom of the second rotating rod 233 abuts against the bottom wall of the infusion bottle under the action of gravity. Since the second rotating rod 233 is arranged horizontally at this time and the outer end extends to the outside of the outer wall of the infusion needle 1, the entire device is difficult to move downward even under the action of gravity or shaking, thereby preventing the infusion needle 1 from falling out of the infusion bottle as much as possible, and further preventing the infusion needle 1 from falling out of the infusion bottle, causing needle contamination, air entering the patient's blood vessels, etc.; after use, the threaded sleeve 22 is screwed upward to the highest position, and the second rotating rod 233 drives the first rotating rod 231 to retract, forming a Figure 2 At this time, hold the tail end of the device and pull it downwards to remove it.
[0021] As a possible implementation of this solution, preferably, a protrusion 221 is fixedly provided on one side of the lower portion of the threaded sleeve 22 ; the provision of the protrusion 221 can facilitate the rotation of the threaded sleeve 22 .
[0022] As a possible implementation of this scheme, preferably, the inner side surface of the second rotating rod 233 is covered with an elastic rubber layer 234; the provision of the elastic rubber layer 234 increases the friction between the second rotating rod 233 and the bottom wall of the infusion bottle, thereby minimizing the risk of rotation between the infusion needle 1 and the infusion bottle when the infusion bottle is shaken.
[0023] As a possible implementation of this solution, preferably, the threaded sleeve 22 is composed of two threaded half shells 222 that are interlocked with each other, and the protrusion 21 is fixed on the outside of one of the threaded half shells 222.
[0024] The above description is only a specific embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A device for preventing an infusion needle from falling off in a field environment, characterized by: It comprises an infusion set needle (1) and an anti-dropout mechanism (2) sleeved on the outside of the infusion set needle (1); The lower outer side of the infusion needle (1) is surrounded by a mounting ring groove (11) with a thread on the lower outer side, and the anti-slip mechanism (2) is sleeved in the mounting ring groove (11); The anti-slip mechanism (2) comprises a fixed sleeve (21) fixedly sleeved on the outer side of the upper portion of the mounting ring groove (11), a spiral sleeve (22) threadedly sleeved on the outer side of the lower portion of the mounting ring groove (11), and a plurality of limiting components (23) spaced apart along the circumference of the infusion needle (1); Each set of limiting components (23) comprises a first rotating rod (231) whose top end is hinged to the upper part of one side of the fixed sleeve (21), an annular slide rail (232) circumferentially embedded in the upper part of the spiral sleeve (22), and a second rotating rod (233) whose top end is slidably arranged in the annular slide rail (232) and whose bottom end is hinged to the bottom end of the first rotating rod (231) on the corresponding side.
2. The device for preventing an infusion needle from falling off in a field environment according to claim 1, characterized in that: A protrusion (221) is fixedly provided on one side of the lower portion of the threaded sleeve (22).
3. The device for preventing an infusion needle from falling off in a field environment according to claim 1, characterized in that: The inner side surface of the second rotating rod (233) is covered with an elastic rubber layer (234).
4. The device for preventing an infusion needle from falling off in a field environment according to claim 1, characterized in that: The threaded sleeve (22) is formed by splicing two threaded half shells (222) that are locked together, and the protrusion (21) is fixed on the outside of one of the threaded half shells (222).