A scalp-preventing needle

Abstract

The present invention discloses an anti-puncture scalp needle, comprising an outer sleeve, a steel needle assembly and an adjusting piece. An installation channel is provided inside the outer sleeve, and two ends of the installation channel respectively penetrate to the two ends of the outer sleeve. A wing is provided on one side of the outer sleeve. The steel needle assembly is arranged in the installation channel and can be moved along the length direction of the outer sleeve. The steel needle assembly can be adjusted between a first position and a second position. When the steel needle assembly is in the first position, the front end of the steel needle assembly is received in the installation channel. When the steel needle assembly is in the second position, the front end of the steel needle assembly extends out from the front end of the outer sleeve. The adjusting piece is arranged at the rear end of the outer sleeve, and is used to drive the steel needle assembly to switch between the first position and the second position. A locking mechanism is also provided on the needle wing, which is used to lock the steel needle assembly in the first position after use. The present invention has the advantages of simple structure, convenient use, strong practicality and high safety.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a scalp puncture-proof needle. Background Art

[0002] Scalp acupuncture is a common medical facility. It is suitable for infusion halls where disposable scalp needles are used frequently. The workload is heavy, the pace is fast, and the flow of people is large. It can also be used for blood collection in ordinary wards. However, the existing scalp needles have a simple structure. After use, the needle part is easily exposed to the outside for a long time due to the loss of the outer cover, which may cause medical staff to be stabbed when collecting them, resulting in cross infection and serious threat to the personal safety of medical staff. At the same time, some lawless persons will collect and process the used needles for secondary use, which will cause more serious harm to the medical environment.

[0003] Therefore, it is necessary to make further improvements in the prior art. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the purpose of the present invention is to provide a scalp puncture-proof needle.

[0005] To achieve the above-mentioned purpose, a scalp puncture-proof needle according to an embodiment of the present invention comprises an outer sleeve, a steel needle assembly and an adjusting member.

[0006] An installation channel is arranged inside the outer sleeve, and two ends of the installation channel respectively penetrate to two ends of the outer sleeve, and a wing is arranged on one side of the outer sleeve.

[0007] The steel needle assembly is arranged in the installation channel and can be moved along the length direction of the outer sleeve. The steel needle assembly can be adjusted between a first position and a second position. When the steel needle assembly is in the first position, the front end of the steel needle assembly is received in the installation channel. When the steel needle assembly is in the second position, the front end of the steel needle assembly extends out from the front end of the outer sleeve.

[0008] The adjusting member is arranged at the rear end of the outer sleeve, and is used for driving the steel needle assembly to switch between the first position and the second position.

[0009] Wherein, a locking mechanism is also provided on the needle wing, which is used to lock the steel needle assembly in the first position after use.

[0010] In addition, the anti-puncture scalp needle according to the above embodiment of the present invention may also have the following additional technical features:

[0011] According to one embodiment of the present invention, the steel needle assembly includes a steel needle body and a tail pipe.

[0012] One end of the tail tube is connected to the rear end of the steel needle body, and the other end of the tail tube extends out from the rear end of the outer sleeve and is connected to the infusion tube.

[0013] According to an embodiment of the present invention, the adjusting member includes a rotating portion and a connecting portion.

[0014] The front end of the rotating part is sleeved on the rear end of the outer surface of the outer sleeve and can rotate along the axis of the outer sleeve;

[0015] The connecting portion is connected to the rear end of the rotating portion, and the connecting sleeve is arranged on the outer surface of the tail pipe;

[0016] The connection part is provided with an internal thread inside, the outer surface of the tail pipe is provided with an external thread, and a threaded connection is formed between the connection part and the tail pipe.

[0017] According to one embodiment of the present invention, an annular groove is provided on the outer surface of the outer sleeve, and the annular groove extends along the circumference of the outer sleeve;

[0018] An annular protrusion is provided at the front end of the inner wall of the rotating part. The annular protrusion extends circumferentially along the rotating part. The annular protrusion is arranged in the annular groove and can rotate along the axis of the outer sleeve.

[0019] According to an embodiment of the present invention, the outer surface of the rotating part is provided with anti-slip grooves.

[0020] According to one embodiment of the present invention, a limiting ridge is provided on the inner wall of the installation channel, and a limiting groove is provided on a side of the outer surface of the tail pipe opposite to the limiting ridge. The limiting groove extends along the length direction of the tail pipe, and one end of the limiting ridge is arranged in the limiting groove.

[0021] According to one embodiment of the present invention, the locking mechanism comprises a sliding member, a clamping member and a locking member.

[0022] A mounting groove is provided in the middle of the wing, the mounting groove extends in the left-right direction, one end of the mounting groove penetrates into the mounting channel, and the sliding member is provided in the mounting groove;

[0023] The clamping member is annular and sleeved outside the tail pipe, and one side of the clamping member is connected to the sliding member;

[0024] The locking member is arranged at the other end of the sliding member, and a limiting plate is arranged on the upper and lower surfaces of the locking member. A retreat groove is arranged on the groove wall of the installation groove away from the clamping member, and a locking groove is arranged on the upper and lower groove walls of the retreat groove to facilitate the locking of the limiting plate;

[0025] In which, the sliding member can be adjusted from the third position to the fourth position. When the sliding member is in the third position, the clamping member and the tail pipe are clearance-fitted, and the locking member is outside the withdrawal groove. When the sliding member is in the fourth position, one side of the clamping member clamps the tail pipe, the locking member is inserted into the withdrawal groove, and the two limiting plates are respectively buckled in the locking grooves.

[0026] According to one embodiment of the present invention, a clamping portion is provided on the inner wall of the clamping member away from the sliding member, and the shape of the clamping portion is adapted to the external thread;

[0027] When the sliding member is in the fourth position, the clamping portion is disposed in the thread groove of the external thread.

[0028] According to an embodiment of the present invention, both the front and rear groove walls of the installation groove are provided with a slide groove, and the slide groove extends in the left and right direction;

[0029] A sliding protrusion is provided on both the front and rear side surfaces of the sliding member, and the two sliding protrusions are slidably arranged in the sliding grooves.

[0030] According to one embodiment of the present invention, a suction component is provided at the front end of the installation channel, and the suction component is coated on the surface of the steel needle body.

[0031] According to an anti-puncture scalp needle provided by an embodiment of the present invention, before use, the steel needle assembly can be adjusted to the first position by the adjusting member, and when in use, the steel needle assembly can be adjusted to the second position by the adjusting member to facilitate puncture, and after use, the steel needle assembly can be adjusted to the first position by the adjusting member so that the front end of the steel needle assembly is stored in the outer sleeve to avoid puncture to medical staff during collection, thereby causing cross infection, and the steel needle assembly can be locked in the first position by the locking assembly to avoid accidental adjustment of the steel needle assembly to the second position, and also to avoid illegal personnel from recycling it for secondary use. Therefore, the present invention has a simple structure, is easy to operate, has strong safety, and has a good use effect.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0035] Figure 2 It is a schematic diagram of the overall structure decomposition in an embodiment of the present invention;

[0036] Figure 3 is a state diagram of the overall structure change in an embodiment of the present invention;

[0037] Figure 4 is a cross-sectional view of the overall structure of an embodiment of the present invention;

[0038] Figure 5 is a schematic diagram of the overall structure of a sliding member in an embodiment of the present invention;

[0039] Figure 6 Embodiment of the present invention Figure 4 Enlarged view of part A in the middle;

[0040] Figure 7 2 is a schematic diagram of the overall structure of the adjusting member in an embodiment of the present invention;

[0041] Figure 8 It is a partial cross-sectional view of the outer sleeve in an embodiment of the present invention.

[0042] Figure Number:

[0043] Outer sleeve 10;

[0044] Installation channel 101;

[0045] Limiting ridge 1011;

[0046] Wing 102;

[0047] Mounting slot 1021;

[0048] Backing slot 1022;

[0049] Locking groove 1023;

[0050] Chute 1024;

[0051] Adjustment member 103;

[0052] Rotating part 1031;

[0053] Annular protrusion 10311;

[0054] Anti-slip pattern 10312;

[0055] Connecting part 1032;

[0056] Annular groove 104;

[0057] Adsorption member 105;

[0058] Steel needle assembly 20;

[0059] Steel needle body 201;

[0060] Tail pipe 202;

[0061] Limiting slot 2021;

[0062] Locking mechanism 30;

[0063] Sliding member 301;

[0064] Sliding protrusion 3011;

[0065] A clamping member 302;

[0066] A clamping portion 3021;

[0067] Locking member 303;

[0068] Limiting piece 3031.

[0069] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0070] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0071] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “circumferential”, “radial”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0072] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0075] The following describes in detail an anti-puncture scalp needle according to an embodiment of the present invention with reference to the accompanying drawings.

[0076] Reference Figures 1 to 8 As shown, a scalp puncture-proof needle provided according to an embodiment of the present invention includes an outer sleeve 10, a steel needle assembly 20 and an adjusting member 103.

[0077] An installation channel 101 is provided inside the outer sleeve 10 , and two ends of the installation channel 101 respectively penetrate through two ends of the outer sleeve 10 . A wing 102 is provided on one side of the outer sleeve 10 .

[0078] The steel needle assembly 20 is arranged in the installation channel 101 and can be moved along the length direction of the outer sleeve 10. The steel needle assembly 20 can be adjusted between a first position and a second position. When the steel needle assembly 20 is in the first position, the front end of the steel needle assembly 20 is received in the installation channel 101. When the steel needle assembly 20 is in the second position, the front end of the steel needle assembly 20 extends out from the front end of the outer sleeve 10.

[0079] The adjusting member 103 is disposed at the rear end of the outer sleeve 10 to drive the steel needle assembly 20 to switch between the first position and the second position.

[0080] Wherein, a locking mechanism 30 is also provided on the needle wing, which is used to lock the steel needle assembly 20 in the first position after use.

[0081] Based on the above, before use, the steel needle assembly 20 can be adjusted to the first position by the adjusting member 103, and during use, the steel needle assembly 20 can be adjusted to the second position by the adjusting member 103 to facilitate puncture, and after use, the steel needle assembly 20 can be adjusted to the first position by the adjusting member 103, so that the front end of the steel needle assembly 20 is stored in the outer sleeve 10 to avoid stabbing to medical staff during collection, thereby causing cross infection, and the steel needle assembly 20 is locked in the first position by the locking assembly to avoid accidental or misoperation of the steel needle assembly 20 to be adjusted to the second position, and also to avoid illegal personnel from recycling it for secondary use. Therefore, the present invention has a simple structure, convenient operation, strong safety and good use effect.

[0082] Preferably, in one embodiment of the present invention, the steel needle assembly 20 includes a steel needle body 201 and a tail pipe 202 .

[0083] One end of the tail tube 202 is connected to the rear end of the steel needle body 201, and the other end of the tail tube 202 extends from the rear end of the outer sleeve 10 and is connected to the infusion tube.

[0084] In this way, since one end of the tail tube 202 is connected to the rear end of the steel needle body 201, and the other end of the tail tube 202 extends from the rear end of the outer sleeve 10 and is connected to the infusion tube, the medicine can be delivered into the steel needle body 201 through the tail tube 202. At the same time, the position of the steel needle can also be adjusted by adjusting the position of the tail tube 202. Preferably, the tail tube 202 can be made of plastic material, which can be easily processed and produced, and has low production cost.

[0085] Preferably, in an embodiment of the present invention, the adjusting member 103 includes a rotating portion 1031 and a connecting portion 1032 .

[0086] The front end of the rotating part 1031 is sleeved on the rear end of the outer surface of the outer sleeve 10 and can rotate along the axis of the outer sleeve 10;

[0087] The connecting portion 1032 is connected to the rear end of the rotating portion 1031, and the connecting sleeve is disposed on the outer surface of the tail pipe 202;

[0088] The connection portion 1032 is internally provided with an internal thread, and the outer surface of the tail pipe 202 is externally provided with an external thread, so that a threaded connection is formed between the connection portion 1032 and the tail pipe 202 .

[0089] In this way, since the front end of the rotating part 1031 is sleeved on the rear end of the outer surface of the outer sleeve 10 and can rotate along the axis of the outer sleeve 10, and the connecting part 1032 is connected to the rear end of the rotating part 1031 and a threaded connection is formed between the connecting part 1032 and the tail tube 202, then, when adjusting, it is only necessary to rotate the rotating part 1031 to drive the tail tube 202 to move forward and backward to control the steel needle assembly 20 to adjust between the first position and the second position. The adjustment method is simple, convenient, stable and reliable.

[0090] Preferably, in one embodiment of the present invention, an annular groove 104 is provided on the outer surface of the outer sleeve 10, and the annular groove 104 extends circumferentially along the outer sleeve 10;

[0091] An annular protrusion 10311 is provided at the front end of the inner wall of the rotating portion 1031 . The annular protrusion 10311 extends circumferentially along the rotating portion 1031 . The annular protrusion 10311 is disposed in the annular groove 104 and can rotate along the axis of the outer sleeve 10 .

[0092] In this way, since an annular groove 104 is provided on the outer surface of the outer sleeve 10, and an annular protrusion 10311 is provided on the front end of the inner wall of the rotating part 1031, and the annular protrusion 10311 is provided in the annular groove 104, and can rotate along the axis of the outer sleeve 10, so that the rotating part 1031 can be firmly installed on the outer sleeve 10 to prevent it from falling off. It can be understood that the annular protrusion 10311 and the annular groove 104 are matched with a gap to facilitate the rotation of the rotating part 1031 along the axis of the outer sleeve 10.

[0093] Preferably, in one embodiment of the present invention, the outer surface of the rotating portion 1031 is provided with anti-slip grooves 10312 .

[0094] In this way, it is more convenient and quick for medical staff to adjust the steel needle assembly 20 without slipping.

[0095] Preferably, in one embodiment of the present invention, a limiting ridge 1011 is provided on the inner wall of the installation channel 101, and a limiting groove 2021 is provided on the side of the outer surface of the tail pipe 202 opposite to the limiting ridge 1011, the limiting groove 2021 extends along the length direction of the tail pipe 202, and one end of the limiting ridge 1011 is arranged in the limiting groove 2021.

[0096] In this way, by providing a limiting ridge 1011 on the inner wall of the installation channel 101, and providing a limiting groove 2021 on the side of the outer surface of the tail pipe 202 opposite to the limiting ridge 1011, and one end of the limiting ridge 1011 is arranged in the limiting groove 2021, the tail pipe 202 can be limited to restrict the tail pipe 202 from rotating along its own axis, so as to achieve driving the tail pipe 202 to move forward and backward when the rotating part 1031 rotates.

[0097] Preferably, in one embodiment of the present invention, the locking mechanism 30 includes a sliding member 301, a holding member 302 and a locking member 303.

[0098] A mounting groove 1021 is provided in the middle of the wing 102. The mounting groove 1021 extends in the left-right direction. One end of the mounting groove 1021 penetrates into the mounting channel 101. The sliding member 301 is disposed in the mounting groove 1021.

[0099] The clamping member 302 is annular and is sleeved outside the tail pipe 202. One side of the clamping member 302 is connected to the sliding member 301.

[0100] The locking member 303 is arranged at the other end of the sliding member 301, and a limiting piece 3031 is arranged on the upper and lower surfaces of the locking member 303. A retreat groove 1022 is arranged on the groove wall of the installation groove 1021 away from the clamping member 302, and a locking groove 1023 is arranged on the upper and lower groove walls of the retreat groove 1022 to facilitate the locking of the limiting piece 3031.

[0101] In which, the sliding member 301 can be adjusted from the third position to the fourth position. When the sliding member 301 is in the third position, the clamping member 302 and the tail pipe 202 are clearance-fitted, and the locking member 303 is outside the retreat groove 1022. When the sliding member 301 is in the fourth position, one side of the clamping member 302 clamps the tail pipe 202, the locking member 303 is inserted into the retreat groove 1022, and the two limiting plates 3031 are respectively buckled in the locking groove 1023.

[0102] Based on the above, since the clamping member 302 is annular and is sleeved outside the tail tube 202, when the sliding member 301 is in the third position, the clamping member 302 and the tail tube 202 are clearance-matched, that is, the tail tube 202 can move freely in the front-rear direction, and when the steel needle assembly 20 is used and adjusted to the first position, the sliding member 301 can be adjusted to the fourth position, so that one side of the clamping member 302 faces the tail tube 202 to clamp and restrict the movement of the tail tube 202, and it should be noted that The two limiting pieces 3031 can be bent to a certain extent to the left end with the pressure. Then, when the locking piece 303 enters the retreat groove 1022, the limiting piece 3031 is in a left-bent state. When the limiting piece 3031 moves to the locking groove 1023, the limiting piece 3031 can restore to its original state after losing pressure and be buckled in the locking groove 1023. In this way, the sliding part can be locked in the fourth position, that is, the tail pipe 202 is locked to limit the movement of the steel needle assembly 20 from the first position to the second position. It has strong practicality and high safety.

[0103] Preferably, in one embodiment of the present invention, a clamping portion 3021 is provided on the inner wall of the clamping member 302 away from the sliding member 301, and the shape of the clamping portion 3021 is adapted to the external thread;

[0104] When the sliding member 301 is in the fourth position, the clamping portion 3021 is disposed in the thread groove of the external thread.

[0105] In this way, by setting the clamping portion 3021 on the inner wall of the clamping member 302 on the side away from the sliding member 301, and the shape of the clamping portion 3021 is adapted to the external thread, then, when the sliding member 301 is adjusted to the fourth position, one side of the clamping member 302 is close to the surface of the tail pipe 202, and the clamping portion 3021 moves into the thread groove of the external thread, thereby clamping the tail pipe 202. The structure is simple, stable and reliable, and the limiting effect is good.

[0106] Preferably, in one embodiment of the present invention, both the front and rear groove walls of the installation groove 1021 are provided with a slide groove 1024, and the slide groove 1024 extends in the left and right direction;

[0107] A sliding protrusion 3011 is disposed on both the front and rear side surfaces of the sliding member 301 , and the two sliding protrusions 3011 are slidably disposed in the sliding grooves 1024 .

[0108] In this way, by opening the sliding groove 1024 on the front and rear groove walls of the installation groove 1021, and providing a sliding protrusion 3011 on the front and rear side surfaces of the sliding member 301, and the two sliding protrusions 3011 can be slidably arranged in the sliding groove 1024 respectively, then the sliding member 301 can slide along the length direction of the sliding groove 1024, so that the sliding member 301 can be adjusted from the third position to the fourth position.

[0109] Preferably, in one embodiment of the present invention, a suction component 105 is provided at the front end of the installation channel 101 , and the suction component 105 is coated on the surface of the steel needle body 201 .

[0110] It is understandable that after the puncture needle is used and pulled out, there will still be some residual liquid inside it. In this way, by providing an adsorbent 105 at the front end of the installation channel 101, and making the adsorbent 105 cover the surface of the steel needle body 201, then when the steel needle assembly 20 moves from the second position to the first position, the adsorbent 105 can cover the end of the steel needle body 201, thereby absorbing the residual liquid inside to avoid cross infection caused by the outflow of residual liquid or blood. Preferably, the adsorbent 105 can be made of medical cotton.

[0111] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0112] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A scalp puncture prevention needle, characterized in that: include: An outer sleeve, wherein a mounting channel is provided inside the outer sleeve, and two ends of the mounting channel respectively penetrate to two ends of the outer sleeve, and a wing is provided on one side of the outer sleeve; A steel needle assembly, the steel needle assembly is arranged in the installation channel and can be moved along the length direction of the outer sleeve, the steel needle assembly can be adjusted between a first position and a second position, when the steel needle assembly is in the first position, the front end of the steel needle assembly is received in the installation channel, when the steel needle assembly is in the second position, the front end of the steel needle assembly extends out from the front end of the outer sleeve; An adjusting member, which is disposed at the rear end of the outer sleeve and is used to drive the steel needle assembly to switch between the first position and the second position; Wherein, the wing is also provided with a locking mechanism for locking the steel needle assembly in the first position after use; The steel needle assembly comprises: Steel needle body; A tail tube, one end of which is connected to the rear end of the steel needle body, and the other end of which extends from the rear end of the outer sleeve and is connected to the infusion tube; The adjusting member comprises: A rotating part, the front end of which is sleeved on the rear end of the outer surface of the outer sleeve and can rotate along the axis of the outer sleeve; A connecting portion, the connecting portion is connected to the rear end of the rotating portion, and the connecting portion is sleeved on the outer surface of the tail pipe; The connection part is provided with an internal thread inside, the outer surface of the tail pipe is provided with an external thread, and a threaded connection is formed between the connection part and the tail pipe; The inner wall of the installation channel is provided with a limiting ridge, and a side surface of the outer surface of the tail pipe opposite to the limiting ridge is provided with a limiting groove, the limiting groove extends along the length direction of the tail pipe, and one end of the limiting ridge is arranged in the limiting groove; The locking mechanism comprises: A sliding member, wherein a mounting groove is provided in the middle of the wing, the mounting groove extends in the left-right direction, one end of the mounting groove penetrates into the mounting channel, and the sliding member is arranged in the mounting groove; A clamping member, the clamping member is annular, the clamping member is sleeved outside the tail pipe, and one side of the clamping member is connected to the sliding member; A locking member, the locking member is arranged at the other end of the sliding member, the upper and lower surfaces of the locking member are both provided with a limiting plate, a retreat groove is provided on the groove wall of the installation groove away from the clamping member, and a locking groove is provided on the upper and lower groove walls of the retreat groove to facilitate the buckling of the limiting plate; The sliding member can be adjusted from the third position to the fourth position. When the sliding member is in the third position, the clamping member and the tail pipe are clearance-matched, and the locking member is outside the retreat groove. When the sliding member is in the fourth position, one side of the clamping member clamps the tail pipe, the locking member is inserted into the retreat groove, and the two limiting pieces are respectively buckled in the locking grooves. A holding portion is provided on the inner wall of the holding member on one side away from the sliding member, and the shape of the holding portion is adapted to the external thread; When the sliding member is in the fourth position, the clamping portion is disposed in the thread groove of the external thread; An adsorption component is provided at the front end of the installation channel, and the adsorption component is coated on the surface of the steel needle body.

2. The anti-scalp puncture needle according to claim 1, characterized in that: The outer surface of the outer sleeve is provided with an annular groove, and the annular groove extends along the circumference of the outer sleeve; An annular protrusion is provided at the front end of the inner wall of the rotating part. The annular protrusion extends circumferentially along the rotating part. The annular protrusion is arranged in the annular groove and can rotate along the axis of the outer sleeve.

3. The anti-scalp puncture needle according to claim 1, characterized in that: The outer surface of the rotating part is provided with anti-slip grooves.

4. The anti-scalp puncture needle according to claim 1, characterized in that: The front and rear groove walls of the installation groove are each provided with a slide groove, and the slide groove extends in the left and right direction; A sliding protrusion is provided on both the front and rear side surfaces of the sliding member, and the two sliding protrusions are slidably arranged in the sliding grooves.

Images