Blunt injection needle
By designing slidingly connected protective parts on the injection blunt needle, the automatic exposure and closure of the needle is achieved, and the safety problems caused by needle exposure in the prior art are solved, thereby improving the convenience and safety of operation.
Patent Information
- Application Number
- CN202420366239.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-02-27
AI Technical Summary
It is difficult to put the protective cover on or lose it in time after use, resulting in the needle being exposed, which may cause puncture and cross infection.
An injection blunt needle including a slidingly connected guard is designed, through the shrinking and deployment mechanism of the pipe, which can fully reveal or close the needle without disassembly, simplifying operation and prevent loss.
It effectively avoids the risk of puncture and cross-infection caused by needle exposure, simplifies the closure and exposure of needles, and improves the safety and efficiency of operation.
Smart Images
Figure CN222218235U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of blunt needles, in particular to a blunt injection needle. Background Art
[0002] Blunt needles are an injection device commonly used for micro-plastic surgery. The use of blunt needles can avoid puncturing related human tissues and improve the efficiency of micro-plastic injections. Therefore, they have been promoted and widely used. In order to avoid puncture injuries, this type of needle generally has a protective cover before use. When the injection liquid needs to be aspirated, the protective cover needs to be removed. After the injection, in order to prevent the needle from polluting the environment or injuring others, it is often necessary to put the protective cover on the needle again before discarding it. However, when the workload is heavy, most operators will not have time to put on the protective cover or the protective cover will be lost, causing the used needle to be exposed to the air, resulting in injuries to others and even unnecessary cross-infection. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model provides a blunt injection needle, which solves the problem that the blunt needle in the prior art is often exposed to the air due to a lack of time to put on a protective cover or the protective cover is lost, resulting in the use of the needle tip being exposed to the air, causing injuries to others and even causing unnecessary cross infection.
[0004] The utility model provides a blunt injection needle, comprising a needle seat and a needle head arranged on the needle seat, wherein the blunt injection needle comprises a protective piece arranged on the needle seat and sleeved on the needle head;
[0005] The protective member comprises a plurality of pipelines which are slidably connected in sequence. The pipeline at the head end is arranged on the needle seat. When the pipeline at the tail end approaches or moves away from the pipeline at the head end, the protective member is contracted or expanded to expose or close the needle.
[0006] Preferably, a receiving groove is provided on the needle seat, and the pipeline at the front end of the protective element is arranged in the receiving groove.
[0007] Preferably, a threaded portion is provided on the inner side of the receiving groove and the outer side of the pipe at the head end, and the two threaded portions are meshed with each other.
[0008] Preferably, the length of the pipe at the head end is smaller than the depth of the receiving groove.
[0009] Preferably, a limit block is provided at one end of each pipeline, and a limit groove is provided in each pipeline, the limit block is snap-fitted into the limit groove in the adjacent pipeline, and the limit block and the limit groove are interference fit.
[0010] Preferably, one end of the limiting groove passes through one end of the pipeline.
[0011] Preferably, an annular block is fixedly provided on the top of the pipe at the end, and the diameter of the annular block is larger than the diameter of the pipe connected thereto.
[0012] Preferably, a support block is provided at the bottom of the annular block, so that when the pipe at the end is received in the receiving groove, there is a gap between it and the top of the needle seat.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] Under the action of the protective part, when the injection liquid is sucked through the needle, the pipe at the end of the protective part is directly abutted against the injection bottle mouth, and the syringe is pushed so that the needle seat at the end of the syringe drives the needle to puncture into the injection bottle, and the end pipe of the protective part is squeezed and moved toward the needle seat, so that each pipe is stored one by one in the adjacent pipe, thereby reducing the size of the protective part. The needle can be fully exposed without disassembling the protective part, which is convenient for sucking the injection liquid and injecting through the exposed needle. Moreover, after the injection is completed, the operator only needs to pull the first end pipe of the protective part, so that the first end pipe drives the other pipes to unfold, so that the needle is closed by the unfolded protective part. There is no need to worry about the loss of the protective part, and the operation of closing the needle is also simplified. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the protective member retracted in the embodiment of the utility model.
[0016] Figure 2 It is a schematic diagram of the structure in which the protective element is unfolded in an embodiment of the utility model.
[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the needle seat and the head end pipe in the embodiment of the utility model.
[0018] Figure 4 This is a schematic diagram of the structure of the interconnected pipes in the embodiment of the utility model, mainly showing the limit blocks and limit grooves.
[0019] In the above drawings: 1, needle seat; 2, needle; 3, protective part; 31, pipeline; 4, storage groove; 5, threaded part; 6, support block; 7, annular block; 8, limit block; 9, limit groove. DETAILED DESCRIPTION
[0020] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0021] like Figure 1 and Figure 2 As shown, the embodiment of the utility model provides a blunt injection needle, comprising a needle seat 1 and a needle head 2 arranged on the needle seat 1, and the blunt injection needle comprises a protective member 3 arranged on the needle seat 1 and sleeved on the needle head 2;
[0022] The protective member 3 includes a plurality of pipes 31 slidably connected in sequence. The pipe 31 at the head end is arranged on the needle seat 1. When the pipe 31 at the tail end approaches or moves away from the pipe 31 at the head end, the protective member 3 contracts or expands to expose or close the needle 2.
[0023] In the embodiment of the present invention, the protective member 3 can be extended or contracted at will under the action of the plurality of pipes 31, and the diameters of the plurality of pipes 31 constituting the protective member 3 are increased gradually, which can ensure that two adjacent pipes 31 can be stored into the size of one pipe 31, further ensuring the size of the protective member 3 when it is contracted. Specifically, when the injection liquid is sucked through the needle 2, the pipe 31 at the end of the protective member 3 is directly abutted against the injection bottle mouth, and the syringe is pushed so that the needle seat 1 at the end of the syringe drives the needle 2 to puncture into the injection bottle, and the end pipe 31 of the protective member 3 is squeezed and moved toward the needle seat 1, so that each pipe 31 is stored one by one in the adjacent pipe 31, thereby reducing the size of the protective member 3, and the needle 2 can be fully exposed without disassembling the protective member 3, which is convenient for sucking the injection liquid and also convenient for injection operation through the exposed needle 2.
[0024] After the injection is completed, the operator only needs to pull the first end pipe 31 of the protective member 3, so that the first end pipe 31 drives the other pipes 31 to unfold, and the needle 2 is sealed by the unfolded protective member 3. There is no need to worry about the protective member 3 being lost due to disassembly, and the operation of sealing the needle 2 is simplified. The needle 2 can be sealed or exposed by just pulling or pushing. Figure 3 As shown, a receiving groove 4 is provided on the needle seat 1, and a pipe 31 at the head end of the protective member 3 is provided in the receiving groove 4. By providing the receiving groove 4 on the needle seat 1, when the protective member 3 is pushed, all the pipes 31 of the protective member 3 are received in the receiving groove 4, so that when the needle 2 is used for injection, the normal shape of the needle seat 1 is still maintained, and the operation of the operator is not affected. Figure 3As shown, the inner side of the receiving groove 4 and the outer side of the pipe 31 at the head end are both provided with threaded portions 5, and the two threaded portions 5 mesh with each other. In terms of processing and assembly, in order to facilitate the assembly of the needle seat 1 with the receiving groove 4 and the protective member 3, the pipe 31 at the head end of the protective member 3 is directly connected to the receiving groove 4, and the protective member 3 is fastened and installed under the action of the threaded portion 5 to ensure the stability of the protective member 3 assembled on the needle seat 1. Furthermore, the length of the pipe 31 at the head end is less than the depth of the receiving groove 4. Since the protective member 3 and the needle seat 1 can be fixedly connected without an excessively long threaded portion 5, the pipe 31 at the head end of the protective member 3 is relatively short compared to other pipes 31. Therefore, the depth of the receiving groove 4 needs to be greater than the pipe 31 at the head end, so that other contracted pipes 31 can be stored in the receiving groove 4, thereby preventing the end of the protective member 3 from protruding out of the receiving groove 4 and affecting the use of the needle 2. And as Figure 1 As shown, the injection end of the needle 2 on the needle seat 1 has a plurality of holes evenly arranged circumferentially, which is suitable for uniform injection over a large area and has a better postoperative effect.
[0025] like Figure 4 As shown, a limit block 8 is provided at one end of each pipe 31 , and a limit groove 9 is provided in each pipe 31 . The limit block 8 is clamped in the limit groove 9 in the adjacent pipe 31 , and the limit block 8 and the limit groove 9 are interference fit.
[0026] In the embodiment of the utility model, the structures of the pipes 31 are the same but the diameters are different. A limiting block 8 is provided at the end of each pipe 31, and a limiting groove 9 is provided in each pipe 31. Taking two adjacent pipes 31 as an example, the two pipes 31 are in a sleeve-connected relationship. With the cooperation of the limiting block 8 and the limiting groove 9, when any pipe 31 in the protective member 3 is rotated, the protective member 3 can be rotated as a whole, which is convenient for the installation operation of the protective member 3. Moreover, one end of the limiting groove 9 passes through one end of the pipe 31. When assembling the protective member 3, one end of one of the pipes 31 can be directly inserted into the other pipe 31 to facilitate the overall assembly of the protective member 3. In the adjacent pipes 31 after assembly, the limiting block 8 and the limiting groove 9 are interference fit. When the protective member 3 is expanded or contracted, the shape of the protective member 3 can be fixed to prevent the protective member 3 from expanding or contracting by itself, which not only ensures that the protective member 3 will not expand when the needle 2 is used, but also ensures that the protective member 3 will not contract when the needle 2 is recovered.
[0027] like Figure 3 As shown, an annular block 7 is fixedly provided on the top of the pipe 31 at the end, and the diameter of the annular block 7 is larger than the diameter of the pipe 31 connected thereto.
[0028] In the embodiment of the utility model, when the protective member 3 needs to be unfolded after shrinking to implement closed protection for the needle 2, under the support of the annular block 7, and the diameter of the annular block 7 is larger than the diameter of the pipe 31 connected thereto, it is more convenient to pinch the terminal pipe 31 of the protective member 3 with fingers, so as to facilitate the unfolding of the protective member 3, and under the limit of the annular block 7, the terminal pipe 31 of the protective member 3 will not be completely stored in the storage groove 4, so as to facilitate the pulling out of the terminal pipe 31 of the protective member 3 and other pipes 31. Moreover, a support block 6 is provided at the bottom of the annular block 7, so that when the pipe 31 at the end is stored in the storage groove 4, there is a gap between it and the top of the needle seat 1, so as to prevent the bottom of the annular block 7 from being completely attached to the needle seat 1, so as to facilitate the operation of the annular block 7, and indirectly facilitate the pulling out of each pipe 31 to unfold the protective member 3.
[0029] In summary, the present application adopts an assembled design of the protective member 3 and the needle seat 1. After the protective member 3 is connected to the needle seat 1, it is only necessary to control the contraction or expansion of the protective member 3 to quickly expose or seal the needle 2 on the needle seat 1. The retracted protective member 3 is completely stored in the storage groove 4 of the needle seat 1, and will not affect the use of the needle 2. The expanded protective member 3 can directly seal the needle 2 to shield the instability of its puncture to avoid contamination or injuring others. There is no need to worry about the loss of the protective member 3 when using it in conjunction with the needle seat 1.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A blunt injection needle, comprising a needle seat (1) and a needle head (2) arranged on the needle seat (1), characterized in that: The blunt injection needle comprises a protective member (3) which is arranged on the needle seat (1) and sleeved on the needle head (2); The protective member (3) comprises a plurality of pipes (31) connected in a sliding manner in sequence, wherein the pipe (31) at the head end is arranged on the needle seat (1), and when the pipe (31) at the tail end approaches or moves away from the pipe (31) at the head end, the protective member (3) is contracted or expanded to expose or close the needle (2).
2. The blunt injection needle according to claim 1, characterized in that: The needle seat (1) is provided with a receiving groove (4), and the pipe (31) at the front end of the protective element (3) is arranged in the receiving groove (4).
3. The blunt injection needle according to claim 2, characterized in that: The inner side of the receiving groove (4) and the outer side of the pipe (31) at the head end are both provided with threaded parts (5), and the two threaded parts (5) are meshed with each other.
4. The blunt injection needle according to claim 3, characterized in that: The length of the pipe (31) at the head end is smaller than the depth of the receiving groove (4).
5. The blunt injection needle according to claim 1, characterized in that: A limit block (8) is provided at one end of each of the pipes (31), and a limit groove (9) is provided in each of the pipes (31); the limit block (8) is snap-fitted into the limit groove (9) in the adjacent pipe (31), and the limit block (8) and the limit groove (9) are interference fit.
6. The blunt injection needle according to claim 5, characterized in that: One end of the limiting groove (9) passes through one end of the pipeline (31).
7. The blunt injection needle according to claim 2, characterized in that: An annular block (7) is fixedly provided on the top of the pipe (31) at the end, and the diameter of the annular block (7) is larger than the diameter of the pipe (31) connected thereto.
8. The blunt injection needle according to claim 7, characterized in that: A supporting block (6) is provided at the bottom of the annular block (7) so that when the pipe (31) at the end is received in the receiving groove (4), there is a gap between it and the top of the needle seat (1).