Fire needle assembly capable of adjusting puncture depth
By designing an adjustable puncture depth fire needle component, the precise position of the fire needle body can be adjusted using a pressing button and adjustment components. This solves the problem of traditional fire needles relying on experience and feel, improves the accuracy and safety of puncture, simplifies operation, and optimizes treatment effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional fire needling relies on the doctor's experience and feel to control the puncture depth, which increases the difficulty of operation, affects the efficacy, and may accidentally damage nerves and blood vessels, lacking precision and safety.
Design an adjustable puncture depth fire needle assembly. The position of the fire needle body within the adjusting sleeve can be adjusted by pressing a button and adjusting the assembly to precisely control the puncture depth. The assembly includes an adjusting sleeve, a pressing button, a holding sleeve, and an adjusting assembly. The inclined sliding surface and locking ring ensure stability and accuracy.
It improves the accuracy and safety of puncture depth, reduces patient pain, simplifies the operation process, and improves treatment effectiveness and work efficiency.
Smart Images
Figure CN224023916U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fire needle technical field especially, relates to a fire needle assembly of adjustable puncture depth. BACKGROUND
[0002] Fire needle, as a traditional Chinese medicine external treatment tool, has a long history and unique curative effect. It is usually made of tungsten steel or other heat-resistant materials, about 10 centimeters in length, and needs to be red when used, then quickly inserted into the patient's skin, using acupuncture point stimulation and slight burn to treat various diseases. Fire needle therapy has been widely used in traditional Chinese medicine clinics due to its significant effect.
[0003] However, there is a significant problem in the use of traditional fire needle, that is, the control of puncture depth. Since fire needle therapy requires acupuncture on specific acupuncture points or diseased areas, and the constitution, disease and acupuncture point position of each patient are different, the control of puncture depth becomes particularly important. The traditional fire needle can provide accurate puncture depth and direction after detecting blood vessels, nerves and other structures by ultrasonic waves, but the puncture depth in the actual operation process completely depends on the experience and feeling of the doctor, which not only increases the difficulty of operation, but also affects the curative effect of fire needle or injures nerves, blood vessels and other tissues, causing unnecessary pain and harm to patients. SUMMARY
[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a fire needle assembly with adjustable puncture depth. It can solve the problem of uncontrollable depth of fire needle acupuncture.
[0005] The utility model adopts the technical scheme that:
[0006] A fire needle assembly with adjustable puncture depth, comprising: a fire needle body; an adjusting sleeve, the adjusting sleeve is provided with an adjusting assembly, the fire needle body is arranged in the adjusting sleeve and is drivenly connected with the adjusting assembly, and the adjusting sleeve is provided with an operation sliding hole; a press key, the press key is slidably arranged in the operation sliding hole and is drivenly connected with the adjusting assembly; a holding sleeve, the holding sleeve is detachably connected with the front end of the adjusting sleeve, and the front end of the fire needle body is arranged out of the front end of the holding sleeve; when the press key is pressed, the press key drives the adjusting assembly to move towards the front end of the adjusting sleeve, so as to drive the fire needle body to move towards the front end of the holding sleeve.
[0007] By adopting the above scheme, when the doctor needs to adjust the puncture depth of the fire needle, only needs to drive the adjusting assembly by pressing the pressing key, so as to change the position of the fire needle body in the adjusting sleeve, and then adjust the exposed length thereof. This design greatly reduces the requirement for the experience and hand feeling of the doctor, improves the accuracy of the puncture depth, and through the accurate adjustment of the exposed length of the fire needle body, the doctor can more accurately control the puncture depth, thereby improving the treatment effect and reducing the pain of the patient.
[0008] Further, the adjusting assembly comprises: a first driving piece, a driving block is arranged on the surface of the first driving piece and abuts against the pressing key; a reset piece, one end of the reset piece abuts against the first driving piece, and the other end abuts against the front end of the adjusting sleeve; a pushing assembly, the pushing assembly is clamped by two petal-shaped clamping arms and is used for clamping the fire needle body; and a locking ring, the locking ring is sleeved on the front end of the pushing assembly and is used for providing clamping force for the petal-shaped clamping arms.
[0009] By adopting the above scheme, the driving block arranged on the surface of the first driving piece abuts against the pressing key, when the doctor presses the pressing key, the first driving piece can be accurately driven to move, so as to drive the fire needle body to move towards the front end of the holding sleeve, and the accurate adjustment of the puncture depth is realized; when the doctor releases the pressing key, the reset piece can automatically reset the first driving piece and the fire needle body to the initial position, and prepare for the next use; and the locking ring sleeve can ensure that the fire needle body will not be accidentally pulled out or loosened in the state that the pressing key is not pressed.
[0010] Further, a first inclined surface is arranged on one end of the pressing key towards the first driving piece, and a second inclined surface is arranged on the driving block, when the pressing key is pressed, the relative sliding of the first inclined surface and the second inclined surface can make the pressing key slide towards the front end of the adjusting sleeve along the operation sliding hole.
[0011] By adopting the above scheme, the design of the first inclined surface and the second inclined surface makes the pressing key move in a smooth and continuous manner when it is pressed, avoiding sudden jumping or jamming, thereby improving the smoothness of the operation, and through the relative sliding of the inclined surfaces, the doctor can more accurately control the moving distance of the pressing key, thereby realizing the fine adjustment of the extension length of the fire needle body.
[0012] Further, a limiting baffle is arranged on the rear end of the first driving piece and is used for abutting against the rear end of the pressing key after being pressed.
[0013] By adopting the above scheme, during the pressing process, the limiting baffle provides a stable support point for the pressing key, which helps to reduce the possibility of shaking or deviation of the pressing key, thereby improving the stability of the entire adjusting assembly, and being beneficial to the pressing and displacement of the pressing key.
[0014] Further, a limiting ring is arranged at the front end of the holding sleeve, and the limiting ring is fixedly connected with the holding sleeve.
[0015] By adopting the above scheme, the fixed connection of the limiting ring and the holding sleeve provides a stable support point for the fire needle body. During the puncture process, this helps to maintain the stability and accuracy of the fire needle, ensuring the effectiveness of the treatment. The existence of the limiting ring can reduce the shaking or deviation of the fire needle body during the puncture process, improving the accuracy of the puncture.
[0016] Further, the limiting ring is made of heat insulation material.
[0017] By adopting the above scheme, the heat generated by the fire needle body during heating or use can be effectively prevented from being transmitted to the holding sleeve.
[0018] Further, a cavity is arranged between the inner wall of the holding sleeve and the fire needle body.
[0019] By adopting the above scheme, the cavity effectively prevents the heat generated by the fire needle body during heating from being directly transmitted to the holding sleeve, thereby avoiding discomfort or injury of the doctor during holding due to high temperature. The cavity can also reduce the overall weight of the holding sleeve.
[0020] Further, a first connecting head is arranged at the front end of the adjusting sleeve, the first connecting head is provided with external threads, the rear end of the holding sleeve is provided with internal threads, and the holding sleeve is threadedly connected with the first connecting head.
[0021] By adopting the above scheme, the close fit of the external threads and the internal threads ensures the stable connection between the adjusting sleeve and the holding sleeve. This connection mode is not easy to loosen, and even under the condition of long-term use or bearing large external force, it can also maintain the stability and reliability of the connection. At the same time, it can be conveniently disassembled, which is conducive to cleaning and replacement, thereby ensuring the hygiene and durability of the fire needle.
[0022] Further, the first driving member and the advancing assembly are made of heat insulation material.
[0023] By adopting the above scheme, the heat insulation material can effectively prevent heat from being transmitted from the fire needle body or other heat sources to the first driving member and the advancing assembly, thereby preventing heat from being transmitted to the pressing key and the adjusting sleeve, improving the safety of operation.
[0024] Further, an anti-slip structure is arranged outside the holding sleeve.
[0025] By adopting the above scheme, the anti-slip structure can increase the friction between the hand and the holding sleeve, so that the doctor can hold the equipment more firmly during operation, avoiding operation errors or injuries caused by slipping.
[0026] In summary, the fire needle assembly with adjustable puncture depth provided by the utility model has the following technical effects:
[0027] 1. By setting the press key and the adjusting assembly, the exposed length of the fire needle body can be adjusted by pressing, so that the puncture depth is accurately controlled. Compared with the traditional method of adjusting the puncture depth depending on the experience and hand feeling of the doctor, the quantitative adjustment greatly reduces the error in the operation process and improves the accuracy of treatment.
[0028] 2. Since the constitution, disease and acupoint position of each patient are different, personalized treatment is particularly important. The fire needle allows the doctor to accurately adjust the puncture depth according to the specific condition of the patient, so as to achieve a more personalized treatment effect. The accurate puncture depth helps to ensure that the heat of the fire needle can be accurately transmitted to the lesion site or specific acupoint, thereby optimizing the treatment effect and improving the cure rate.
[0029] 3. The doctor can quickly adjust the puncture depth without complicated operation or additional tools, which simplifies the operation process and helps the doctor save time and improve work efficiency during treatment. BRIEF DESCRIPTION OF DRAWINGS
[0030] Fig. 1 is a schematic diagram of the three-dimensional structure of the embodiment of the utility model;
[0031] Fig. 2 is a schematic diagram of the local explosion structure of the embodiment of the utility model;
[0032] Fig. 3 is a schematic diagram of the cross-sectional structure of the embodiment of the utility model.
[0033] Among them, the meaning of the sign is as follows: 1, fire needle body; 2, adjusting sleeve; 21, operation sliding hole; 22, press key; 221, first inclined surface; 23, first connecting head; 231, external thread; 3, adjusting assembly; 31, first driving piece; 311, driving block; 3111, second inclined surface; 312, limiting baffle; 32, reset piece; 33, advancing assembly; 331, petal-shaped clamping arm; 34, locking ring; 4, holding sleeve; 41, cavity; 42, internal thread; 43, limiting ring; 5, anti-skid structure; 51, anti-skid sleeve; 52, arc transition. DETAILED DESCRIPTION
[0034] For better understanding and implementation, the technical solutions in the embodiments of the present application will be described and discussed clearly and completely in conjunction with the drawings of the present application. Obviously, only some examples of the present application are described here, and not all examples. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0035] For the convenience of understanding the embodiments of the present application, the following will be further explained and described with specific examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present application.
[0036] In the description of the present application, it should be pointed out that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.
[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.
[0038] Embodiment 1 of the present application refers to Figs. 1-3As shown, the adjustable depth of puncture fire needle assembly is disclosed, which comprises a fire needle body 1, an adjusting sleeve 2, a pressing key 22 and a holding sleeve 4, the adjusting sleeve 2 is provided with an adjusting assembly 3, the holding sleeve 4 is detachably connected with the front end of the adjusting sleeve 2, the front end of the fire needle body 1 penetrates from the rear end of the adjusting sleeve 2 and penetrates out from the front end of the holding sleeve 4, the length of the fire needle body 1 penetrating out from the front end of the holding sleeve 4 is the puncture length, the fire needle body 1 is drivingly connected with the adjusting assembly 3, the adjusting sleeve 2 is provided with an operation sliding hole 21, the pressing key 22 is slidingly arranged in the operation sliding hole 21, and the pressing key 22 is drivingly connected with the adjusting assembly 3; when the pressing key 22 is pressed, the pressing key 22 drives the adjusting assembly 3 to move towards the front end of the adjusting sleeve 2, so as to drive the fire needle body 1 to move towards the front end of the holding sleeve 4, thereby the length penetrating out from the front end of the holding sleeve 4 can be adjusted; when the doctor needs to adjust the puncture depth of the fire needle, only needs to press the pressing key 22 to drive the adjusting assembly 3, so as to change the position of the fire needle body 1 in the adjusting sleeve 2, and then adjust the exposed length. This design greatly reduces the requirement of doctor's experience and hand feeling, improves the accuracy of puncture depth, and through the accurate adjustment of the exposed length of the fire needle body 1, the doctor can more accurately control the puncture depth, thereby improving the treatment effect and reducing the pain of the patient.
[0039] Optionally, the operation sliding hole 21 can be located at the rear end of the adjusting sleeve 2 or the side wall of the adjusting sleeve 2, which can push the driving assembly to displace to the front end, and the embodiment is not limited. In the embodiment 1, the operation sliding hole 21 is arranged at the side wall of the adjusting sleeve 2.
[0040] In some embodiments, the adjusting assembly 3 comprises a first driving member 31, a reset member 32, a pushing assembly 33 and a locking ring 34. The first driving member 31 is in the shape of a cylinder and is sleeved on the fire needle body 1. The surface of the first driving member 31 is provided with driving blocks 311 which abut against the pressing key 22. Preferably, the first driving member 31 is provided with two driving blocks 311. The end of the pressing key 22 towards the first driving member 31 is provided with a first inclined surface 221. Preferably, the first inclined surface 221 is provided with two first inclined surfaces 221. The driving blocks 311 are provided with second inclined surfaces 3111. Preferably, the driving blocks 311 are provided with two second inclined surfaces 3111. When the pressing key 22 is pressed, the relative sliding of the first inclined surface 221 and the second inclined surface 3111 can make the pressing key 22 slide along the operation sliding hole 21 to the front end of the adjusting sleeve 2. The design of the first inclined surface 221 and the second inclined surface 3111 makes the pressing key 22 move in a smooth and continuous manner when it is pressed, avoiding sudden jumps or stalls, thereby improving the smoothness of the operation. Through the relative sliding of the inclined surfaces, the doctor can more accurately control the moving distance of the pressing key 22, thereby realizing the fine adjustment of the extension length of the fire needle body 1. One end of the reset member 32 abuts against the first driving member 31, and the other end abuts against the inner cavity wall of the front end of the adjusting sleeve 2. Preferably, the reset member 32 is a spring. The pushing assembly 33 is formed by two petal-shaped clamping arms 331 for clamping the fire needle body 1. The locking ring 34 is sleeved on the front end of the pushing assembly 33 for providing clamping force for the petal-shaped clamping arms 331. The driving blocks 311 on the surface of the first driving member 31 abut against the pressing key 22. When the doctor presses the pressing key 22, the first driving member 31 can be accurately driven to move, thereby driving the fire needle body 1 to move to the front end of the holding sleeve 4, realizing the accurate adjustment of the puncture depth. When the doctor releases the pressing key 22, the reset member 32 can automatically reset the first driving member 31 and the fire needle body 1 to the initial position, preparing for the next use. The locking ring 34 can ensure that the fire needle body 1 will not be accidentally pulled out or loosened when the pressing key 22 is not pressed.
[0041] In some embodiments, a limiting baffle 312 is arranged at the rear end of the first driving member 31 for abutting against the rear end of the pressing key 22 after being pressed. During the pressing process of the pressing key 22, the limiting baffle 312 provides a stable support point for the pressing key 22, which helps to reduce the possibility of shaking or deviation, thereby improving the stability of the entire adjusting assembly 3 and facilitating the pressing and displacement of the pressing key 22.
[0042] In order to avoid heat transfer from the fire needle body 1 to the holding sleeve 4 during the burning process, in some embodiments, the holding sleeve 4 is spaced apart from the fire needle, and the two are not in direct contact. In this embodiment 1, a cavity 41 is provided between the inner wall of the holding sleeve 4 and the fire needle body 1. The provision of the cavity 41 effectively prevents the heat generated by the fire needle body 1 during heating from being directly transmitted to the holding sleeve 4, thereby avoiding discomfort or injury to the doctor when holding due to high temperature, and the cavity 41 can also reduce the overall weight of the holding sleeve 4. Although such arrangement hinders the heat energy transfer of the fire needle body 1, it will cause the fire needle body 1 to be not limited, and prone to shaking or tilting problems during puncture. Therefore, in this embodiment 1, a limiting ring 43 is provided at the front end of the holding sleeve 4, and the limiting ring 43 is fixedly connected with the holding sleeve 4. The fixed connection of the limiting ring 43 with the holding sleeve 4 provides a stable support point for the fire needle body 1. During puncture, this helps to maintain the stability and accuracy of the fire needle, ensuring the effectiveness of the treatment. The presence of the limiting ring 43 can reduce the shaking or deviation of the fire needle body 1 during puncture, improving the accuracy of puncture. Preferably, the limiting ring 43 is made of heat-insulating material, which can effectively prevent heat generated by the fire needle body 1 during heating or use from being transmitted to the holding sleeve 4. The heat-insulating material of the limiting ring 43 includes but is not limited to graphite material, silicate material or ceramic material.
[0043] In some embodiments, the detachable structure between the adjusting sleeve 2 and the holding sleeve 4 includes but is not limited to threaded connection or clamping link. In this embodiment 1, a first connecting head 23 is provided at the front end of the adjusting sleeve 2, and the first connecting head 23 is provided with external threads 231. The rear end of the holding sleeve 4 is provided with internal threads 42, and the holding sleeve 4 is threadedly connected with the first connecting head 23. The close fit of the external threads 231 and the internal threads 42 ensures the stable connection between the adjusting sleeve 2 and the holding sleeve 4. This connection method is not easy to loosen, and even under the condition of long-term use or bearing large external force, it can also maintain the stability and reliability of the connection, and can be conveniently disassembled, which is conducive to cleaning and replacement, thereby ensuring the hygiene and durability of the fire needle.
[0044] Since the doctor is likely to touch the adjusting sleeve 2 during puncture, it is necessary to provide heat insulation measures between the fire needle body 1 and the adjusting sleeve 2. Preferably, in this embodiment 1, the first driving member 31 and the advancing assembly 33 are made of heat-insulating material. Optionally, the pressing key 22 can also be made of heat-insulating material. The heat-insulating material can effectively prevent heat from being transmitted from the fire needle body 1 or other heat sources to the first driving member 31 and the advancing assembly 33, thereby preventing heat from being transmitted to the pressing key 22 and the adjusting sleeve 2, and improving the safety of operation. The heat-insulating material includes but is not limited to graphite material, silicate material or ceramic material.
[0045] In order to avoid the problem of slipping between the hand and the holding sleeve 4 during the puncture process, in some embodiments, an anti-skid structure 5 is arranged outside the holding sleeve 4. Optionally, the anti-skid structure 5 includes but is not limited to one or a combination of the following modes: an anti-skid sleeve 51, anti-skid lines, anti-skid grooves, and surface arc transition 52. By arranging the anti-skid structure 5, the friction between the hand and the holding sleeve 4 can be increased, so that the doctor can hold the device more firmly during operation, and avoid operation errors or injuries caused by slipping. In the embodiment 1, the arc transition 52 structure and the anti-skid sleeve 51 are arranged outside the holding sleeve 4, which can effectively improve the friction.
[0046] With the development of modern medical technology, ultrasound can help doctors avoid important blood vessels, nerves and other structures, improve the safety and accuracy of acupuncture, and know the depth and direction of the needle operation, avoid damaging nerves and blood vessels, and adjust the depth of the needle assembly. Combined with the fire needle, the precise treatment of the fire needle can be realized. When in use, the fire needle body 1 is put into the rear end of the adjusting sleeve 2, the fire needle body 1 slides down to the advancing assembly 33 due to its own gravity, and the fire needle body 1 cannot continue to fall due to the locking ring 34. At this time, the first slope and the second slope are relatively slid by pressing the pressing key 22, and the first driving part 31 can only move towards the front end of the adjusting sleeve 2 because the pressing key 22 cannot move towards the rear end due to the influence of the operation sliding groove. At this time, the first driving part 31 pushes the advancing assembly 33 forward during the advancing process, and the two petal-shaped clamping arms 331 of the advancing assembly 33 move forward and open. At this time, the fire needle body 1 can enter between the two petal-shaped clamping arms 331, and the front end of the fire needle can be pushed out to the front end of the holding sleeve 4 by pushing the rear end of the fire needle body 1. At this time, the pressing key 22, the first driving part 31 and the advancing assembly 33 are reset by releasing the pressing key 22 and resetting the elastic member. At this time, the locking ring 34 locks the two petal-shaped clamping arms 331, and the fire needle body 1 is fixed and cannot be displaced. The length of the fire needle body 1 can be adjusted by repeatedly pressing the pressing key 22, and the puncture depth can be obtained by measuring the length of the fire needle exposed. Therefore, the length of the fire needle body 1 can be adjusted according to the required puncture depth. The front end of the fire needle body 1 is burned and quickly punctured, the puncture depth is clear, which is beneficial to the operation of the doctor and reduces the operation difficulty.
[0047] In summary, the fire needle assembly with adjustable puncture depth provided by the present application has the following technical effects:
[0048] 1. By setting the press key 22 and the adjustment assembly 3, the exposed length of the fire needle body 1 can be adjusted by pressing, thereby achieving precise control of the puncture depth. Compared with the traditional method of relying on the experience and feel of the doctor to adjust the puncture depth, this quantitative adjustment method greatly reduces the error in the operation process and improves the precision of treatment;
[0049] 2. Since the constitution, disease and acupoint position of each patient are different, personalized treatment is particularly important. The fire needle allows the doctor to accurately adjust the puncture depth according to the specific situation of the patient, thereby achieving a more personalized treatment effect. The accurate puncture depth helps to ensure that the heat of the fire needle can be accurately transmitted to the lesion site or specific acupoint, thereby optimizing the treatment effect and improving the cure rate;
[0050] 3. The doctor can quickly adjust the puncture depth without complex operations or additional tools, which simplifies the operation process and helps the doctor save time during treatment and improve work efficiency.
[0051] The technical means disclosed in the utility model scheme is not limited to the technical means disclosed in the above-mentioned embodiments, but also includes technical solutions composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principles of the utility model, a number of improvements and refinements can be made, which are also considered within the protection scope of the utility model.
Claims
1. A fire needle assembly with adjustable puncture depth, characterized in that, include: Fire needle body(1); Adjusting sleeve (2), an adjusting component (3) is provided inside the adjusting sleeve (2), the fire needle body (1) passes through the adjusting sleeve (2) and is driven to connect with the adjusting component (3), and an operating sliding hole (21) is provided on the adjusting sleeve (2). The press key (22) is slidably disposed in the operation slide hole (21) and is drivenly connected to the adjustment component (3); The holding sleeve (4) is detachably connected to the front end of the adjusting sleeve (2), and the front end of the fire needle body (1) extends through the front end of the holding sleeve (4). When the press button (22) is pressed, the press button (22) drives the adjustment component (3) to move towards the front end of the adjustment sleeve (2), thereby driving the fire needle body (1) to move towards the front end of the holding sleeve (4).
2. The adjustable puncture depth fire needle assembly according to claim 1, characterized in that, The adjustment component (3) includes: A first driving member (31) is provided on the surface of which a driving block (311) abuts against the pressing key (22); The reset member (32) has one end abutting against the first driving member (31) and the other end abutting against the front end of the adjusting sleeve (2); The propulsion assembly (33) is formed by two petal-shaped clamping arms (331) for clamping the fire needle body (1); A locking ring (34) is sleeved on the front end of the propulsion assembly (33) to provide clamping force for the petal-shaped clamping arm (331).
3. The adjustable puncture depth fire needle assembly according to claim 2, characterized in that, The pressing key (22) has a first inclined surface (221) at one end facing the first driving member (31), and the driving block (311) has a second inclined surface (3111). When the pressing key (22) is pressed, the relative sliding of the first inclined surface (221) and the second inclined surface (3111) allows the pressing key (22) to slide along the operating slide hole (21) toward the front end of the adjusting sleeve (2).
4. The adjustable puncture depth fire needle assembly according to claim 2, characterized in that, The rear end of the first driving member (31) is provided with a limit baffle (312) for abutting against the rear end of the pressed button (22) after it is pressed.
5. The adjustable puncture depth fire needle assembly according to claim 1, characterized in that, The front end of the grip sleeve (4) is provided with a limiting ring (43), and the limiting ring (43) is fixedly connected to the grip sleeve (4).
6. The adjustable puncture depth fire needle assembly according to claim 5, characterized in that, The limiting ring (43) is made of heat-insulating material.
7. The adjustable puncture depth fire needle assembly according to claim 1, characterized in that, A cavity (41) is provided between the inner wall of the holding sleeve (4) and the fire needle body (1).
8. The adjustable puncture depth fire needle assembly according to claim 1, characterized in that, The front end of the adjusting sleeve (2) is provided with a first connector (23), the first connector (23) is provided with an external thread (231), the rear end of the gripping sleeve (4) is provided with an internal thread (42), and the gripping sleeve (4) is threadedly connected to the first connector (23).
9. The adjustable puncture depth fire needle assembly according to claim 2, characterized in that, Both the first drive component (31) and the propulsion component (33) are made of heat-insulating material.
10. The adjustable puncture depth fire needle assembly according to claim 1, characterized in that, The grip sleeve (4) is provided with an anti-slip structure (5).