Liquid injection needle tube for avoiding liquid drops

Abstract

This utility model discloses an injection needle that avoids dripping, relating to the field of injection needle technology. The utility model includes a reservoir tube and an infusion tube connected within the reservoir tube, and further includes: a flow-limiting part disposed on the reservoir tube; a protective part mounted on the reservoir tube; the flow-limiting part includes an overflow component disposed on the reservoir tube; and a reset component mounted on the reservoir tube; the overflow component includes an outlet head connected to the reservoir tube, the outer wall of the outlet head being provided with a needle. By incorporating a flow-limiting part, this utility model solves the problem of existing injection needles where the outlet head remains continuously open or semi-open during use, leading to the easy leakage of residual electrolyte from the needle and outlet head due to gravity or surface tension. This leakage of electrolyte can contaminate the operating table, the outer wall of the syringe, and even the surrounding environment.

Description

Technical Field

[0001] This utility model belongs to the field of injection needle technology, and in particular relates to an injection needle that avoids dripping. Background Technology

[0002] With the rapid development of the lithium-ion battery industry, from mobile phone and laptop batteries in the consumer electronics field to power batteries for new energy vehicles and large-capacity energy storage batteries in the energy storage field, the market has put forward higher requirements for the energy density, cycle life and production safety of batteries. As the core medium for energy transfer in batteries, the amount of electrolyte injected, the injection precision and the cleanliness of the injection process directly determine the core performance and yield of the battery in the mass production of batteries.

[0003] However, during the use of existing injection syringes, the dispensing head is always in an open or semi-open state. This causes the residual electrolyte in the needle and dispensing head to leak naturally due to gravity or surface tension. The leaked electrolyte can contaminate the operating table, the outer wall of the syringe, and even the surrounding environment. Utility Model Content

[0004] The purpose of this invention is to provide an injection needle that avoids dripping. By setting a flow-limiting part, it solves the problem that in the use of existing injection needles, the outlet head is always in an open or semi-open state, which causes the residual electrolyte in the needle and outlet head to leak naturally due to gravity or surface tension. The leaked electrolyte will contaminate the operating table, the outer wall of the syringe, and even the surrounding environment.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to an infusion needle tube that avoids dripping, comprising a reservoir tube and an infusion tube connected within the reservoir tube, and further comprising: a flow limiting part disposed on the reservoir tube; a protective part mounted on the reservoir tube; the flow limiting part including an overflow assembly disposed on the reservoir tube; and a reset assembly mounted on the reservoir tube; the overflow assembly including an outlet head connected to the reservoir tube, the outer wall of the outlet head being provided with a needle tip, a fixing ring being fixedly connected to the inner wall of the outlet head, an overflow tube being slidably connected to the inner wall of the fixing ring, and a leakage component disposed on the overflow tube, the middle part of the overflow tube being solid for sealing the outlet head, and the leakage component including a plurality of overflow holes formed on the overflow tube, the overflow holes being disposed at both ends of the overflow tube and distributed in a circumferential array.

[0007] Furthermore, the protective part includes an ejection assembly disposed on the liquid storage tube; and a limiting assembly mounted on the liquid storage tube, both the ejection assembly and the limiting assembly being located on the outer wall of the liquid storage tube.

[0008] Furthermore, the reset assembly includes two sliding rings fixedly connected to the outer wall of the overflow tube. Two springs are sleeved on the outer wall of the overflow tube. The sides of the two springs that are close to each other are fixedly connected to the fixed rings, and the sides of the two springs that are far apart from each other are fixedly connected to the two sliding rings respectively. The natural state of the two springs is a state without pressure.

[0009] Furthermore, the ejection assembly includes a sliding sleeve slidably connected to the outer wall of the liquid storage tube. A rotating ring one is rotatably connected to the inner wall of the sliding sleeve, and a rotating ring two is rotatably connected to the outer wall of the liquid storage tube. An elastic element is provided on the outer wall of the liquid storage tube. The rotating ring one and the rotating ring two have the same size. The elastic element includes a spring two sleeved on the outer wall of the liquid storage tube. The top of the spring two is fixedly connected to the rotating ring one, and the bottom of the spring two is fixedly connected to the rotating ring two. The initial state of the rotating ring two is a stretched state.

[0010] Furthermore, the limiting component includes a limiting block fixedly connected to the outer wall of the sliding sleeve, the sliding sleeve is provided with an adapter groove, the limiting block is adapted to the adapter groove, and the limiting block is in contact with the sliding sleeve.

[0011] This utility model has the following beneficial effects:

[0012] 1. By setting a flow-limiting part, when drawing electrolyte, after inserting the needle into the electrolyte bottle and starting the infusion tube, as the infusion tube continuously infuses the electrolyte into the storage tube, the negative pressure generated in the storage tube will pull the overflow tube upward. When the overflow tube moves, it drives the upper and lower sliding rings to move synchronously. The upper sliding ring stretches the upper spring, and the lower sliding ring compresses the lower spring, thereby pulling the overflow hole out of the blocked state. The electrolyte in the electrolyte bottle is then sucked into the storage tube. After the electrolyte is drawn out, the spring releases its elasticity, driving the overflow tube and sliding ring to reset and re-seal the outlet. When injecting electrolyte, the overflow tube will move in the opposite direction under the force to ensure that the electrolyte flows out normally. This realizes the automatic sealing of the outlet in the non-injection state, which fundamentally prevents residual electrolyte leakage after drawing electrolyte, avoiding electrolyte waste and environmental and needle contamination.

[0013] 2. By setting up a protective part, when the needle is exposed, pulling the sliding sleeve upward will cause the rotating ring one to move upward synchronously. During this process, the second spring is stretched. When the adapter slot passes the limiting block, rotating the sliding sleeve will limit and fix the sliding sleeve, and the needle will be exposed. At this time, electrolyte can be extracted. After use, rotating the sliding sleeve in the opposite direction will cause the sliding sleeve to rotate on the rotating ring one. When the limiting block moves to the position of the adapter slot, the limiting effect is released, and the second spring will release its elasticity, pulling the rotating ring one to slide upward, while simultaneously driving the sliding sleeve to move synchronously, finally covering the needle again. This ensures the reliability of the needle covering, reduces the problem of needle protection failure caused by human operation errors, and further ensures the safety of the injection process.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial cross-sectional view of the liquid outlet head of this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the flow-limiting part of this utility model;

[0019] Figure 4 This is a partial cross-sectional view of the overflow hole of this utility model;

[0020] Figure 5 This is a partial cross-sectional view of the component of this utility model;

[0021] Figure 6 This is a partial cross-sectional view of the limiting component of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 111. Storage tube; 112. Infusion tube; 2. Flow limiting part; 21. Overflow assembly; 211. Dispensing head; 212. Needle; 213. Fixing ring; 214. Overflow tube; 215. Overflow hole; 22. Reset assembly; 221. Sliding ring; 222. Spring one; 3. Protective part; 31. Push-out assembly; 311. Sliding sleeve; 312. Rotating ring one; 313. Rotating ring two; 314. Spring two; 32. Limiting assembly; 321. Limiting block; 322. Adaptor groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6 As shown, this utility model is an infusion needle tube that avoids dripping, including a reservoir tube 111 and an infusion tube 112 connected to the reservoir tube 111, and also includes: a flow limiting part 2, which is disposed on the reservoir tube 111; and a protective part 3, which is installed on the reservoir tube 111.

[0026] The flow limiting part 2 includes an overflow assembly 21, which is disposed on the liquid storage tube 111; and a reset assembly 22, which is mounted on the liquid storage tube 111. The overflow assembly 21 includes a liquid outlet head 211 connected to the liquid storage tube 111. The outer wall of the liquid outlet head 211 is provided with a needle 212. A fixing ring 213 is fixedly connected to the inner wall of the liquid outlet head 211. An overflow tube 214 is slidably connected to the inner wall of the fixing ring 213. A leakage component is provided on the overflow tube 214. The middle part of the overflow tube 214 is solid and used to seal the liquid outlet head 211. The leakage component includes a plurality of overflow holes 215 opened on the overflow tube 214. The overflow holes 215 are provided with... The resetting assembly 22 includes two sliding rings 221 fixedly connected to the outer wall of the overflow tube 214, and two springs 222 are sleeved on the outer wall of the overflow tube 214. The side of the two springs 222 that are close to each other is fixedly connected to the fixing ring 213, and the side of the two springs 222 that are far from each other is fixedly connected to the two sliding rings 221 respectively. The two springs 222 are in a pressure-free state in their natural state. By setting the flow limiting part 2, the automatic sealing of the liquid outlet head in the non-liquid injection state is realized, which prevents residual electrolyte leakage after the electrolyte is extracted from the source, and avoids electrolyte waste and environmental and needle contamination.

[0027] The protective part 3 includes an ejection assembly 31, which is disposed on the liquid storage tube 111; and a limiting assembly 32, which is also mounted on the liquid storage tube 111. Both the ejection assembly 31 and the limiting assembly 32 are located on the outer wall of the liquid storage tube 111. The ejection assembly 31 includes a sliding sleeve 311 slidably connected to the outer wall of the liquid storage tube 111. A rotating ring 312 is rotatably connected to the inner wall of the sliding sleeve 311, and a rotating ring 313 is rotatably connected to the outer wall of the liquid storage tube 111. An elastic element is provided on the outer wall of the liquid storage tube 111. The rotating ring 312 and the rotating ring 313 have the same size. The elastic element includes a spring sleeved on the outer wall of the liquid storage tube 111. Spring 314 is fixedly connected at its top to rotating ring 312 and at its bottom to rotating ring 313. The initial state of rotating ring 313 is a stretched state. The limiting component 32 includes a limiting block 321 fixedly connected to the outer wall of sliding sleeve 311. The sliding sleeve 311 is provided with an adapter groove 322. The limiting block 321 is adapted to the adapter groove 322 and is in contact with the sliding sleeve 311. By setting the protective part 3, the reliability of needle protection is ensured, the problem of needle protection failure caused by human operation error is reduced, and the safety of the injection process is further guaranteed.

[0028] A specific application of this embodiment is as follows: During use, the needle 212 is first exposed. To expose it, the sliding sleeve 311 is pulled upwards. The sliding sleeve 311 then moves the rotating ring 312 upwards. During this movement, the spring 314 is stretched. After the adapter groove 322 passes the limiting block 321, the sliding sleeve 311 is rotated. The limiting block 321 then limits the sliding sleeve 311, allowing the needle 212 to be exposed. At this point, the electrolyte can be drawn into the storage tube 111. After use, the sliding sleeve 311 is rotated, and it rotates on the rotating ring 312. As it rotates, the limiting block 321 reaches the adapter groove 322, stopping its limitation on the sliding sleeve 311. After stopping, the spring 314 pulls the rotating ring 312 upwards, causing the sliding sleeve 311 to move along with it. As the sliding sleeve 311 moves, it will cover the needle 212 again. When drawing electrolyte, the needle 212 is inserted into the liquid bottle. At this time, after the infusion tube 112 is started, it will generate negative pressure in the storage tube 111 through infusion. After generating negative pressure, it will pull the overflow tube 214 upward. As the overflow tube 214 moves, the sliding ring 221 will also move. The upper sliding ring 221 will pull the upper spring 222, and the lower sliding ring 221 will squeeze the spring 222. As the overflow tube 214 moves, it will pull out the overflow hole 215. At this time, the electrolyte in the electrolyte bottle will be sucked into the storage tube 111. After the electrolyte is drawn, the spring 222 will reset the overflow tube 214 and the sliding ring 221, thereby sealing the outlet 211 again, thus preventing dripping and leakage. During injection, the overflow tube 214 is pushed to move in the opposite direction.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A drip-avoiding infusion needle, comprising a reservoir tube (111) and an infusion tube (112) communicating within the reservoir tube (111), characterized in that, Also includes: A flow limiting part (2) is provided on the liquid storage pipe (111); Protective part (3), said protective part (3) is installed on liquid storage pipe (111); The flow restrictor (2) includes an overflow assembly (21) disposed on the liquid storage pipe (111); and A reset assembly (22) is mounted on a liquid reservoir (111); The overflow assembly (21) includes a liquid outlet (211) connected to the liquid storage tube (111), the outer wall of the liquid outlet (211) is provided with a needle (212), the inner wall of the liquid outlet (211) is fixedly connected with a fixing ring (213), the inner wall of the fixing ring (213) is slidably connected with an overflow tube (214), and the overflow tube (214) is provided with a leakage component; The middle part of the overflow tube (214) is solid and is used to seal the outlet head (211).

2. The infusion needle for avoiding dripping according to claim 1, characterized in that, The protective part (3) includes an ejection assembly (31) disposed on the liquid storage tube (111); and A limiting component (32) is mounted on the liquid storage tube (111); The ejection component (31) and the limiting component (32) are both located on the outer wall of the liquid storage tube (111).

3. The infusion needle for avoiding dripping according to claim 2, characterized in that, The reset assembly (22) includes two sliding rings (221) fixedly connected to the outer wall of the overflow tube (214). The outer wall of the overflow tube (214) is fitted with two springs (222). The sides of the two springs (222) that are close to each other are fixedly connected to the fixed ring (213), and the sides of the two springs (222) that are far apart from each other are fixedly connected to the two sliding rings (221). Among them, the natural state of the two springs (222) is without pressure.

4. The infusion needle for avoiding dripping according to claim 3, characterized in that, The ejection assembly (31) includes a sliding sleeve (311) slidably connected to the outer wall of the liquid storage tube (111), a rotating ring one (312) is rotatably connected to the inner wall of the sliding sleeve (311), a rotating ring two (313) is rotatably connected to the outer wall of the liquid storage tube (111), and an elastic element is provided on the outer wall of the liquid storage tube (111). Among them, the first rotating ring (312) and the second rotating ring (313) have the same size.

5. The infusion needle for avoiding dripping according to claim 4, characterized in that, The limiting component (32) includes a limiting block (321) fixedly connected to the outer wall of the sliding sleeve (311), and the sliding sleeve (311) is provided with an adapter groove (322); The limiting block (321) is adapted to the adapter groove (322), and the limiting block (321) is in contact with the sliding sleeve (311).

6. The infusion needle for avoiding dripping according to claim 5, characterized in that, The leakage component includes a plurality of overflow holes (215) formed on the overflow pipe (214); The overflow holes (215) are located at both ends of the overflow pipe (214) and are distributed in a circumferential array.

7. The infusion needle for avoiding dripping according to claim 6, characterized in that, The elastic element includes a second spring (314) sleeved on the outer wall of the liquid storage tube (111), the top of the second spring (314) is fixedly connected to the first rotating ring (312), and the bottom of the second spring (314) is fixedly connected to the second rotating ring (313). Among them, the initial state of the rotating ring 2 (313) is the stretched state.

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