Length-adjustable sharp needle
By setting up an adjustment sleeve and a rotary ring on the sharp needle, the threaded combination is used to achieve stepless adjustment of the needle body length and the guidance of the scale line, the problem of unadjustable sharp needle length is solved, and the control and safety of injection depth is improved.
Patent Information
- Application Number
- CN202421196965.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The length of the existing sharp needle cannot be adjusted adaptively, resulting in inconvenient control of the injection depth and difficult to observe the scale, which affects the accuracy and safety of the injection operation.
A sharp needle with adjustable length is designed. By setting an adjustment sleeve and a rotary ring on the outside of the needle sleeve, the internal screw groove and external thread are used to achieve stepless adjustment of the needle body length, and a scale mark is set on the external thread, which is convenient for precise adjustment.
It realizes flexible adjustment of needle body length, adapts to different injection depth requirements, improves the accuracy and safety of injection operations, and enhances sealing.
Smart Images
Figure CN223233075U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical aesthetics, and in particular to a sharp needle with adjustable length. Background Art
[0002] In ordinary medical aesthetic injections, doctors will choose different needles according to different products and different injection sites. The choice of needles is of course very particular. For example, why do some areas need to be operated with sharp needles, and why do others choose to use blunt needles? The choice of needle is a matter of great consideration for doctors. The final cosmetic effect is directly related to the safety and health of the patients.
[0003] The sharp needle has an angled tip, is sharp and small, and has a high hardness. It can directly pierce the skin epidermis and enter the subcutaneous tissue. The medicine outlet is designed at the tip of the needle and is usually used for injection operations such as infusion and injection. The sharp needle injection technique is flexible and varied, and various techniques can be used. It can be flexibly switched and fine-tuned in multiple planes and multiple injection points. The sharp needle is thinner and, if used properly, causes less tissue damage, less pain, and is safer. However, the length of the sharp needle is usually between 4 and 40 mm, and is divided into different specifications according to different lengths. When injecting, a needle of corresponding specifications is selected according to the need for injection depth, and it cannot be adaptively adjusted. Some needles have scales set on the needle body, but the needle body is thin, the scale is not easy to observe, and it is not convenient to control the injection depth. Therefore, the utility model proposes a sharp needle with adjustable length to solve the problems existing in the prior art. Utility Model Content
[0004] In response to the above problems, the utility model proposes a sharp needle with adjustable length, which drives the adjustment sleeve to move on the needle sleeve, thereby changing the distance of the needle body below to adjust the length of the outer sleeve of the needle body, and steplessly adjusts it to different specifications to meet the needs of injections of different depths.
[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a sharp needle with adjustable length, comprising a needle sleeve, a needle body and an adjusting sleeve, wherein the needle body is arranged below the needle sleeve, the adjusting sleeve sliding sleeve is arranged on the outside of the needle sleeve, an external thread is provided above the outer side of the needle sleeve, a rotating ring is rotatably provided above the adjusting sleeve, and the rotating ring sleeve is arranged on the outer side of the needle sleeve, an inner screw groove is provided on the inner side of the rotating ring, and the inner screw groove is adapted to the external thread;
[0006] A spacing section is provided at the middle end of the external thread, and a scale line is provided on the needle sleeve at the spacing end.
[0007] A further improvement is that: protrusions are provided below both sides of the needle sleeve, and guide grooves are provided on both sides of the interior of the adjustment sleeve, and the protrusions on both sides are movably adapted to the guide grooves on both sides respectively.
[0008] A further improvement is that a rubber sleeve is provided at the bottom of the needle sleeve, and the rubber sleeve is wrapped around the upper end of the outer side of the needle body.
[0009] A further improvement is that an edge is provided above the outer side of the needle sleeve, and the edge is integrally formed with the needle sleeve.
[0010] A further improvement is that a through hole is provided at the middle position of the bottom of the adjustment sleeve, the needle body passes through the through hole, a rubber ring is provided on the inner side of the through hole, and the rubber ring is wrapped around the outer side of the needle body.
[0011] A further improvement is that the lower end of the needle body is a sharp head, and a needle hole is provided on the sharp head.
[0012] A further improvement is that a collar is provided at the edge of the top of the adjusting sleeve, and a sleeve groove is provided below the inner side of the rotating ring, and the sleeve groove is rotatably adapted to the collar.
[0013] A further improvement is that: anti-slip protrusions are provided on the outer side of the rotating ring, and multiple groups of anti-slip protrusions are provided at equal angles around the center of the rotating ring.
[0014] The beneficial effects of the utility model are:
[0015] 1. The utility model adds an adjustment sleeve on the outside of the needle sleeve. According to the needs of different injection depths, the rotating ring can be rotated, and the adjustment sleeve can be driven to move on the needle sleeve by utilizing the adaptation of the inner screw groove and the outer screw thread, thereby changing the distance of the needle body below to adjust the length of the outer sleeve of the needle body. It can be steplessly adjusted to different specifications to adapt to the needs of injections of different depths.
[0016] 2. In the process of rotating the rotary ring for adjustment, the scale line at the middle interval of the external thread can be observed, and the required external length of the needle can be adjusted according to the scale line.
[0017] 3. The bottom of the needle sleeve of the utility model is provided with a rubber sleeve wrapped around the upper end of the outer side of the needle body, and the bottom of the adjustment sleeve is provided with a rubber ring wrapped around the outer side of the needle body, which enhances the sealing of the contact position and is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is the main view of the utility model;
[0019] Figure 2 This is a schematic diagram of the needle sleeve and needle body of the present utility model;
[0020] Figure 3 It is a cross-sectional schematic diagram of the adjustment sleeve of the present utility model.
[0021] Among them: 1. Needle sleeve; 2. Needle body; 3. Adjustment sleeve; 4. External thread; 5. Rotary ring; 6. Internal thread groove; 7. Scale line; 8. Protrusion; 9. Guide groove; 10. Rubber sleeve; 11. Edge; 12. Rubber ring; 13. Needle hole; 14. Ring. DETAILED DESCRIPTION
[0022] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention. Example 1
[0023] according to Figure 1 、 2 As shown in Figures 3 and 4, this embodiment provides a sharp needle with adjustable length, comprising a needle sleeve 1, a needle body 2 and an adjusting sleeve 3. The needle body 2 is disposed below the needle sleeve 1, and the adjusting sleeve 3 is slidably mounted on the outside of the needle sleeve 1. An external thread 4 is provided above the outer side of the needle sleeve 1. A rotating ring 5 is rotatably provided above the adjusting sleeve 3, and the rotating ring 5 is sleeved on the outer side of the needle sleeve 1. An inner screw groove 6 is provided on the inner side of the rotating ring 5, and the inner screw groove 6 is adapted to the external thread 4.
[0024] The middle end of the external thread 4 is provided with a spacer, and a scale line 7 is provided on the needle sleeve 1 at the spacer end. During use, an adjustment sleeve 3 is added to the outside of the needle sleeve 1. To meet the needs of different injection depths, the rotating ring 5 is rotated, and the adjustment sleeve 3 is driven to move on the needle sleeve 1 by utilizing the adaptation of the internal screw groove 6 and the external thread 4, thereby changing the distance of the needle body 2 below, thereby adjusting the external length of the needle body 2. The adjustment can be made steplessly to different specifications to adapt to the needs of injections of different depths. While rotating the rotating ring 5 for adjustment, the scale line 7 at the middle spacer of the external thread 4 is observed, and the required external length of the needle body 2 can be easily adjusted according to the scale line 7.
[0025] Protrusions 8 are provided below both sides of the needle guard 1, and guide grooves 9 are provided on both sides of the interior of the adjustment sleeve 3. The protrusions 8 on both sides flexibly fit within the guide grooves 9. During use, the rotating ring 5 is rotated to adjust the adjustment sleeve 3 on the needle guard 1 by utilizing the fit between the internal thread groove 6 and the external thread 4. The adjustment sleeve 3 moves stably, guided by the protrusions 8 and guide grooves 9, changing the distance between the needle body 2 and the lower part, thereby adjusting the external length of the needle body 2. This allows for stepless adjustment to different specifications to accommodate injections of varying depths.
[0026] The bottom of the needle sleeve 1 is provided with a rubber sleeve 10, and the rubber sleeve 10 is wrapped around the upper end of the outer side of the needle body 2. An edge 11 is provided above the outer side of the needle sleeve 1, and the edge 11 is integrally formed with the needle sleeve 1. The edge 11 is convenient for finger manipulation to install or remove the needle sleeve 1 on the syringe. A through hole is provided at the middle position of the bottom of the adjustment sleeve 3, and the needle body 2 passes through the through hole. A rubber ring 12 is provided on the inner side of the through hole, and the rubber ring 12 is wrapped around the outer side of the needle body 2. A rubber sleeve 10 is provided at the bottom of the needle sleeve 1 to wrap around the upper end of the outer side of the needle body 2, and a rubber ring 12 is provided at the bottom of the adjustment sleeve 3 to wrap around the outer side of the needle body 2, thereby enhancing the sealing of the contact position and being more reliable.
[0027] The lower end of the needle body 2 is a sharp head, and the sharp head is provided with a needle hole 13. The sharp needle specification, the needle hole 13 is used for injecting liquid. Example 2
[0028] according to Figure 1 、 2 As shown in Figures 3 and 4, this embodiment provides a sharp needle with adjustable length, comprising a needle sleeve 1, a needle body 2 and an adjusting sleeve 3. The needle body 2 is disposed below the needle sleeve 1, and the adjusting sleeve 3 is slidably mounted on the outside of the needle sleeve 1. An external thread 4 is provided above the outer side of the needle sleeve 1. A rotating ring 5 is rotatably provided above the adjusting sleeve 3, and the rotating ring 5 is sleeved on the outer side of the needle sleeve 1. An inner screw groove 6 is provided on the inner side of the rotating ring 5, and the inner screw groove 6 is adapted to the external thread 4.
[0029] The middle end of the external thread 4 is provided with a spacer, and a scale line 7 is provided on the needle sleeve 1 at the spacer end. During use, an adjustment sleeve 3 is added to the outside of the needle sleeve 1. To meet the needs of different injection depths, the rotating ring 5 is rotated, and the adjustment sleeve 3 is driven to move on the needle sleeve 1 by utilizing the adaptation of the internal screw groove 6 and the external thread 4, thereby changing the distance of the needle body 2 below, thereby adjusting the external length of the needle body 2. The adjustment can be made steplessly to different specifications to adapt to the needs of injections of different depths. While rotating the rotating ring 5 for adjustment, the scale line 7 at the middle spacer of the external thread 4 is observed, and the required external length of the needle body 2 can be easily adjusted according to the scale line 7.
[0030] The lower end of the needle body 2 is a sharp head, and the sharp head is provided with a needle hole 13. The sharp needle specification, the needle hole 13 is used for injecting liquid.
[0031] A collar 14 is provided at the top edge of the adjustment sleeve 3, and a sleeve groove is provided below the inner side of the rotating ring 5, which is rotatably adapted to the collar 14. The outer side of the rotating ring 5 is provided with anti-slip protrusions, and multiple groups of anti-slip protrusions are arranged at equal angles around the center of the rotating ring 5. During use, the rotating ring 5 is rotated, and the anti-slip protrusions prevent slipping during rotation. The adjustment sleeve 3 is driven to move on the needle sleeve 1 by the adaptation of the internal screw groove 6 and the external thread 4. The adjustment sleeve 3 is stably moved by the guidance of the protrusion 8 and the guide groove 9, changing the distance of the needle body 2 below it to adjust the external length of the needle body 2, and can be adjusted steplessly to different specifications to adapt to the needs of injections of different depths.
[0032] This adjustable-length sharp needle has an additional adjustment sleeve 3 on the outside of the needle sleeve 1. To meet the needs of different injection depths, the rotating ring 5 can be rotated, and the internal screw groove 6 and the external thread 4 can be used to drive the adjustment sleeve 3 to move on the needle sleeve 1, thereby changing the distance of the needle body 2 below to adjust the external length of the needle body 2. It can be adjusted to different specifications steplessly to meet the needs of injections of different depths. In the process of rotating the rotating ring 5 for adjustment, the scale line 7 at the middle interval of the external thread 4 can be observed, and the scale line 7 can be used to adjust the required external length of the needle body 2. At the same time, a rubber sleeve 10 is set at the bottom of the needle sleeve 1 of this product to wrap around the upper end of the outer side of the needle body 2, and a rubber ring 12 is set at the bottom of the adjustment sleeve 3 to wrap around the outer side of the needle body 2, enhancing the sealing of the contact position and making it more reliable.
[0033] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. A sharp needle with adjustable length, comprising a needle sleeve (1), a needle body (2) and an adjustment sleeve (3), characterized in that: The needle body (2) is arranged below the needle sleeve (1), the adjustment sleeve (3) is slidably sleeved on the outside of the needle sleeve (1), an external thread (4) is provided above the outside of the needle sleeve (1), a rotating ring (5) is rotatably provided above the adjustment sleeve (3), and the rotating ring (5) is sleeved on the outside of the needle sleeve (1), an inner screw groove (6) is provided on the inner side of the rotating ring (5), and the inner screw groove (6) is adapted to the external thread (4); A spacing section is provided at the middle end of the external thread (4), and a scale line (7) is provided on the needle sleeve (1) at the spacing end.
2. The length-adjustable sharp needle according to claim 1, characterized in that: Protrusions (8) are provided below both sides of the needle sleeve (1), and guide grooves (9) are provided on both sides of the interior of the adjustment sleeve (3), and the protrusions (8) on both sides are movably adapted to the guide grooves (9) on both sides respectively.
3. The length-adjustable sharp needle according to claim 1, characterized in that: A rubber sleeve (10) is provided at the bottom of the needle sleeve (1), and the rubber sleeve (10) is wrapped around the upper end of the outer side of the needle body (2).
4. The length-adjustable sharp needle according to claim 3, characterized in that: An edge (11) is provided above the outer side of the needle sleeve (1), and the edge (11) and the needle sleeve (1) are integrally formed.
5. The length-adjustable sharp needle according to claim 1, characterized in that: A through hole is provided at the middle position of the bottom of the adjustment sleeve (3), and the needle body (2) passes through the through hole. A rubber ring (12) is provided on the inner side of the through hole, and the rubber ring (12) is wrapped around the outer side of the needle body (2).
6. The length-adjustable sharp needle according to claim 1, characterized in that: The lower end of the needle body (2) is a sharp head, and a needle hole (13) is provided on the sharp head.
7. The length-adjustable sharp needle according to claim 1, characterized in that: A collar (14) is provided at the edge of the top of the adjustment sleeve (3), and a sleeve groove is provided below the inner side of the rotating ring (5), and the sleeve groove is rotationally adapted to the collar (14).
8. The length-adjustable sharp needle according to claim 7, characterized in that: Anti-slip protrusions are provided on the outer side of the rotating ring (5), and multiple groups of anti-slip protrusions are provided at equal angles around the center of the rotating ring (5).