Nerve block needle puncture locator

Abstract

The invention provides a nerve block needle puncture positioner, which relates to the technical field of medical instruments and comprises a guide ring capable of guiding puncture of a block needle, a rotating column arranged on one side of the guide ring and a fixing assembly arranged on one side of the rotating column and used for fixing an arm. Fine adjustment of the up-down swing angle of the retardation needle is achieved by adjusting the steering component, the vertical angle requirements of different anatomical parts are met, operation can be completed only by pushing a push plate with one hand, and a guide structure is matched to ensure that the adjustment process is stable and reliable; the left-right swing angle of the blocking needle can be flexibly adjusted, angle linkage adjustment of a two-dimensional space is formed, the puncture angle can be rapidly matched according to individual differences of patients, operation difficulty caused by angle limitation is avoided, medical workers are effectively helped to improve the puncture efficiency, operation complexity is reduced, and the operation efficiency is improved. And meanwhile, the discomfort caused by repeatedly adjusting the body position of the patient is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a nerve block needle puncture locator. Background Art

[0002] Nerve block is to inject local anesthetic around the nerve trunk, plexus, and ganglion to block its impulse conduction and make the innervated area produce anesthetic effect, which is called nerve block. Nerve block only needs to be injected at one place to obtain a larger anesthetic area. In medical scenarios such as pain treatment and surgical anesthesia, the nerve block needle puncture needs to accurately hit the target nerve to ensure the curative effect and reduce the risks of vascular injury, nerve mis-puncture, etc.

[0003] When the existing nerve block needle locator is operated, first the locator base is attached to the skin of the patient's puncture site, the guiding ring on the adjusting bracket is aligned with the preset puncture point, and then the nerve block needle is slowly pushed along the guiding groove. At the same time, the position of the needle tip is observed in real time by combining with the image, and the depth and angle of the needle insertion are gradually adjusted until the target nerve area is reached.

[0004] The steering adjustment structure of the existing locator generally adopts a knob bolt assembly. It is necessary to first loosen the bolt to unlock the steering joint, manually adjust the direction of the guiding groove, and then tighten the bolt to fix it. This process requires repeated operation of the knob, and it is difficult to control the tightening force of the bolt, which is prone to insufficient adjustment accuracy or loose locking of the joint. Especially in complex puncture scenarios that require frequent fine-tuning, the operation is cumbersome and time-consuming, affecting the surgical efficiency and increasing the discomfort of the patient. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect of low adjustment efficiency in the existing nerve block needle puncture locator technology. The present invention proposes a nerve block needle puncture locator.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is a nerve block needle puncture locator, which includes a guiding ring for guiding the puncture of the block needle, a rotating column arranged on one side of the guiding ring, and a fixing component arranged on one side of the rotating column for fixing the arm. A connecting seat is arranged at the bottom end of the guiding ring, and the connecting seat is connected to the rotating column. An adjusting structure is arranged on the other side of the rotating column, and the adjusting structure is used for adjusting the turning of the block needle puncture in different directions. The adjusting structure includes a housing arranged at the top end of the fixing component. An adjusting steering component one and an adjusting steering component two are rotatably connected inside the housing. The adjusting steering component one includes a rotating rod rotatably connected inside the housing. One end of the rotating rod is provided with a bevel gear assembly, and the bevel gear assembly is connected to the rotating column. The adjusting steering component one drives the block needle inside the guiding ring to swing up and down through the rotating column. The adjusting steering component two includes a sleeve rod rotatably connected to the outer end of the rotating rod. A disk gear assembly is arranged on one side of the sleeve rod, and a linkage assembly is arranged on one side of the disk gear assembly. The linkage assembly is connected to the rotating column. The adjusting steering component two drives the block needle inside the guiding ring to swing left and right through the rotating column.

[0007] Further, the adjusting steering component one includes a notch one opened on the surface of the housing. A first rack is slidably connected inside the notch one. One end of the first rack is provided with a push plate one, and the push plate one extends to the outside of the housing. The adjusting steering component one further includes a connecting plate arranged inside the housing. A sliding groove one is opened on the bottom surface of the connecting plate. A slider one is slidably connected inside the sliding groove one, and the slider one is connected to the first rack.

[0008] Further, a first gear is arranged on the outer side of the rotating rod, and the first gear is meshed and connected with the first rack. The bevel gear assembly includes a first bevel gear arranged at one end of the rotating rod. A driven rod is rotatably connected inside the housing. One end of the driven rod is provided with a second bevel gear, and the second bevel gear is meshed and connected with the first bevel gear. The bevel gear assembly further includes a third bevel gear arranged at one end of the rotating column, and the third bevel gear is meshed and connected with the second bevel gear.

[0009] Further, the adjusting steering component two includes a notch two opened on the surface of the housing. A second rack is slidably connected inside the notch two. One end of the second rack is provided with a push plate two, and the push plate two extends to the outside of the housing. An extension plate is arranged on one side of the connecting plate. A sliding groove two is opened at the bottom end of the extension plate. A slider two is slidably connected inside the sliding groove two, and the slider two is connected to the second rack.

[0010] Further, a second gear is arranged on the outer side of the sleeve rod, and the second gear is meshed and connected with the second rack.

[0011] Furthermore, the disc gear assembly includes a first disc gear arranged at the other end of the sleeve rod, and a connecting rod is rotatably connected inside the shell, and a second disc gear is arranged on the top of the connecting rod, and the second disc gear is meshed and connected with the first disc gear.

[0012] Furthermore, the linkage assembly includes a connecting frame rotatably connected to the outside of the connecting rod, and a collar is provided on one side of the connecting frame, and the collar is connected to the rotating column.

[0013] Furthermore, the outer side of the connecting rod is rotatably connected with a receiving assembly, and the receiving assembly includes a receiving plate 1 rotatably connected to the outer side of the connecting rod, a circular ring is provided on one side of the receiving plate 1, and the circular ring is rotatably connected to the sleeve rod, and a receiving plate 2 is provided on one side of the circular ring, and the receiving plate 2 is rotatably connected to the driven rod.

[0014] Furthermore, the fixing component includes a fixing plate arranged at the bottom end of the shell, an arc-shaped plate is arranged at the bottom end of the fixing plate, the arc-shaped plate is made of silicone material, an air tube is embedded inside the arc-shaped plate, the air tube is connected to a micro air pump, a suction cup is arranged on one side of the air tube, and multiple groups of suction cups are distributed at equal intervals, and the suction cups adsorb the skin and fix it.

[0015] Furthermore, a first magnetic attraction strip is provided on one side of the arc-shaped plate, and a second magnetic attraction strip is provided on the other side of the arc-shaped plate, and the first magnetic attraction strip is fixed to the second magnetic attraction strip by magnetic attraction.

[0016] Compared with the prior art, the beneficial effects of the present invention include a guide ring for guiding the puncture of the blocking needle, a rotating column arranged on one side of the guide ring, and a fixed component arranged on one side of the rotating column for fixing the arm. By adjusting the steering component one through a multi-gear transmission structure, the up and down swing angle of the blocking needle can be finely adjusted to adapt to the vertical angle requirements of different anatomical parts. During operation, it can be completed by pushing the push plate with one hand, and the guide structure is cooperated to ensure that the adjustment process is smooth and reliable. The second steering component is adjusted to use a disc gear transmission mechanism to achieve flexible adjustment of the left and right swing angles of the blocking needle, forming a two-dimensional angle linkage adjustment with the former, and can quickly match the puncture angle according to individual differences of patients to avoid operational difficulties caused by angle restrictions. Both sets of components are integrated into the shell with a compact design, which not only reduces space occupancy and improves the portability of the device, but also ensures long-term reliability through wear-resistant materials and stable transmission structures, effectively helping medical staff to improve puncture efficiency, reduce operational complexity, and reduce the discomfort of patients caused by repeated adjustment of body positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them: Figure 1Schematically shows an overall three-dimensional structural schematic diagram of a nerve block needle puncture locator proposed according to an embodiment of the present invention; Figure 2 Schematically shows an overall three-dimensional exploded structural schematic diagram of a nerve block needle puncture locator proposed according to an embodiment of the present invention; Figure 3 Schematically shows a three-dimensional unfolded structural schematic diagram of an adjustment structure of a nerve block needle puncture locator proposed according to an embodiment of the present invention; Figure 4 Schematically shows a three-dimensional structural schematic diagram of an adjustment steering component one of a nerve block needle puncture locator proposed according to an embodiment of the present invention; Figure 5 Schematically shows a structural schematic diagram of an adjustment steering component two of a nerve block needle puncture locator proposed according to an embodiment of the present invention; Figure 6 Schematically shows a three-dimensional structural schematic diagram of a receiving component of a nerve block needle puncture locator proposed according to an embodiment of the present invention; Figure 7 Schematically shows a three-dimensional structural schematic diagram of a fixing component of a nerve block needle puncture locator proposed according to an embodiment of the present invention.

[0018] Reference numerals in the figure: 1, guiding ring; 2, connecting seat; 3, rotating column; 4, adjustment structure; 41, adjustment steering component one; 411, first push plate; 412, first rack; 413, first slider; 414, connecting plate; 415, first chute; 416, first gear; 417, rotating rod; 418, first bevel gear; 419, second bevel gear; 4110, driven rod; 4111, third bevel gear; 42, adjustment steering component two; 421, second push plate; 422, second rack; 423, second slider; 424, extending plate; 425, second chute; 426, first disk gear; 427, second disk gear; 428, connecting rod; 429, connecting frame; 4210, collar; 4211, sleeve rod; 4212, second gear; 43, receiving component; 431, first receiving plate; 432, circular ring; 433, second receiving plate; 44, housing; 45, first notch; 46, second notch; 5, fixing component; 51, fixing plate; 52, micro air pump; 53, arc plate; 54, air pipe; 55, suction cup; 56, first magnetic strip; 57, second magnetic strip. Detailed implementation manners

[0019] It is easy to understand that according to the technical solution of the present invention, without changing the essence of the present invention, those of ordinary skill in the art can propose various interchangeable structural forms and implementation manners. Therefore, the following specific embodiments and the accompanying drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0020] Embodiment 1: According to an embodiment of the present invention in combination with Figures 1 - 4 and Figures 6 - 7 As shown, a nerve block needle puncture locator includes a guiding ring 1 for guiding the puncture of the block needle, a rotating column 3 provided on one side of the guiding ring 1, and a fixing assembly 5 provided on one side of the rotating column 3 for fixing the arm; a connecting seat 2 is provided at the bottom end of the guiding ring 1, the connecting seat 2 is connected to the rotating column 3, an adjusting structure 4 is provided on the other side of the rotating column 3, and the adjusting structure 4 is used for steering adjustment of different orientations of the block needle puncture. The adjusting structure 4 includes a housing 44 provided at the top end of the fixing assembly 5. An adjusting steering member 41 and an adjusting steering member 42 are rotatably connected inside the housing 44. The adjusting steering member 41 includes a rotating rod 417 rotatably connected inside the housing 44. A bevel gear assembly is provided at one end of the rotating rod 417, and the bevel gear assembly is connected to the rotating column 3. The adjusting steering member 41 drives the block needle inside the guiding ring 1 to swing up and down through the rotating column 3. The adjusting steering member 41 includes a notch 45 opened on the surface of the housing 44. A first rack 412 is slidably connected inside the notch 45. A push plate 411 is provided at one end of the first rack 412, and the push plate 411 extends to the outside of the housing 44. The adjusting steering member 41 further includes a connecting plate 414 provided inside the housing 44. A first chute 415 is opened on the bottom surface of the connecting plate 414. A first slider 413 is slidably connected inside the first chute 415. The first slider 413 is connected to the first rack 412. A first gear 416 is provided on the outer side of the rotating rod 417, and the first gear 416 is meshed with the first rack 412. The bevel gear assembly includes a first bevel gear 418 provided at one end of the rotating rod 417. A driven rod 4110 is rotatably connected inside the housing 44. A second bevel gear 419 is provided at one end of the driven rod 4110, and the second bevel gear 419 is meshed with the first bevel gear 418. The bevel gear assembly further includes a third bevel gear 4111 provided at one end of the rotating column 3, and the third bevel gear 4111 is meshed with the second bevel gear 419, thereby realizing the adjustment of the puncture angle of the block needle. After adjusting to the appropriate angle, the puncture work can be carried out through the guiding ring 1, converting the linear motion into the rotational motion of the rotating column 3, and realizing the precise adjustment of the up and down swing angle of the connecting seat 2, which can meet the precise requirements of different puncture scenarios for the angle.

[0021] The fixing component 5 includes a fixing plate 51 arranged at the bottom end of the housing 44. An arc-shaped plate 53 is arranged at the bottom end of the fixing plate 51. The arc-shaped plate 53 is made of silica gel. An air pipe 54 is embedded inside the arc-shaped plate 53. The air pipe 54 is connected to a micro air pump 52. A suction cup 55 is arranged on one side of the air pipe 54. Multiple groups of suction cups 55 are evenly distributed. The suction cups 55 adsorb the skin for fixation. A magnetic strip one 56 is arranged on one side of the arc-shaped plate 53. A magnetic strip two 57 is arranged on the other side of the arc-shaped plate 53. The magnetic strip one 56 and the magnetic strip two 57 are magnetically fixed to form a double fixing mechanism, ensuring that the arm remains stable during the puncture process and avoiding puncture errors or failures caused by arm shaking.

[0022] Specifically, during use, first fix the fixing component 5 to fit the arm. Open the magnetic connection structure between the first magnetic strip 56 and the second magnetic strip 57. Then, place the arm steadily between the two arc-shaped plates 53 so that the arm is in the preset fixing area. Next, close the first magnetic strip 56 and the second magnetic strip 57 to form a preliminary fixation by magnetic adsorption force. The preliminary fixation of the first magnetic strip 56 and the second magnetic strip 57 combined with the negative pressure adsorption of the suction cup 55 forms a dual fixation mechanism to ensure that the arm remains stable during the puncture process and avoid puncture errors or failures caused by arm shaking. Turn on the two micro air pumps 52 symmetrically arranged at the bottom end of the housing 44. After the micro air pumps 52 are started, negative pressure air flow is generated through the air pipes 54. Since the air pipes 54 are embedded inside the arc-shaped plates 53 and multiple suction cups 55 are connected to one side of the air pipes 54, the negative pressure air flow is conducted to each suction cup 55 through the air pipes 54, causing the suction cups 55 to form an adsorption force with the arm skin surface and further enhancing the fixation effect. The fixing plate 51 at the top of the arc-shaped plate 53 is fixedly connected to the housing 44 to provide a stable support frame for the entire fixing structure. Insert the blocking needle into the guiding ring 1 to position and guide the puncture needle through the guiding ring 1. When it is necessary to adapt to different puncture requirements, drive the first adjusting and turning component 41 on one side of the housing 44 to push the first push plate 411 extending outside the housing 44. The first push plate 411 drives the first rack 412 to slide into the housing 44 along the notch 45. During the movement of the first rack 412, the first slider 413 on one side of it slides synchronously in the first chute 415 opened at the bottom end of the connecting plate 414 to ensure the smooth movement of the first rack 412. The first rack 412 meshes with the first gear 416 to drive the first gear 416 to rotate. Furthermore, the rotating rod 417 coaxially connected to the first gear 416 rotates. The rotating rod 417 is rotatably connected to the inner wall of the housing 44, and the first bevel gear 418 at the other end of it rotates accordingly and meshes with the second bevel gear 419 to drive the driven rod 4110 to rotate. The driven rod 4110 is rotatably connected to the housing 44, and the second bevel gear 419 on its outer side meshes with the third bevel gear 4111 at the same time to drive the rotating column 3 to rotate. The connecting seat 2 on the outer side of the rotating column 3 swings up and down as the rotating column 3 rotates, thereby realizing the adjustment of the puncture angle of the blocking needle. After adjusting to the appropriate angle, the puncture work can be carried out through the guiding ring 1. The linear motion is converted into the rotational motion of the rotating column 3 to realize the precise adjustment of the swinging angle of the connecting seat 2 up and down, which can meet the precise requirements of different puncture scenarios for the angle, is simple and convenient to operate, reduces the operation difficulty of medical staff, and improves work efficiency.

[0023] Embodiment 2: In combination with an embodiment of the present invention Figures 1 - 3 and Figure 5As shown, the second steering adjustment component 42 includes a sleeve rod 4211 rotatably connected to the outer end of the rotating rod 417. A disk gear assembly is provided on one side of the sleeve rod 4211, and a linkage assembly is provided on one side of the disk gear assembly. The linkage assembly is connected to the rotating column 3. The second steering adjustment component 42 drives the blocking needle inside the guide ring 1 to swing left and right through the rotating column 3. The second steering adjustment component 42 includes a notch two 46 opened on the surface of the housing 44. A second rack 422 is slidably connected inside the notch two 46. One end of the second rack 422 is provided with a second push plate 421. The second push plate 421 extends to the outside of the housing 44. A extension plate 424 is provided on one side of the connecting plate 414. A chute two 425 is opened at the bottom end of the extension plate 424. A slider two 423 is slidably connected inside the chute two 425. The slider two 423 is connected to the second rack 422. A second gear 4212 is provided on the outside of the sleeve rod 4211. The second gear 4212 is meshed with the second rack 422. The disk gear assembly includes a first disk gear 426 provided at the other end of the sleeve rod 4211. A connecting rod 428 is also rotatably connected inside the housing 44. A second disk gear 427 is provided at the top end of the connecting rod 428. The second disk gear 427 is meshed with the first disk gear 426. The linkage assembly includes a connecting frame 429 rotatably connected to the outside of the connecting rod 428. A collar 4210 is provided on one side of the connecting frame 429. The collar 4210 is connected to the rotating column 3. A receiving assembly 43 is rotatably connected to the outside of the connecting rod 428. The receiving assembly 43 includes a first receiving plate 431 rotatably connected to the outside of the connecting rod 428. A ring 432 is provided on one side of the first receiving plate 431. The ring 432 is rotatably connected to the sleeve rod 4211. A second receiving plate 433 is provided on one side of the ring 432. The second receiving plate 433 is rotatably connected to the driven rod 4110. The adjustment of the left and right swing angles of the rotating column 3 is realized. Combined with the up and down swing adjustment in the first embodiment, the blocking needle can be adjusted in angle in a two-dimensional space, which can meet various complex puncture requirements and expand the application range of the device.

[0024] When it is necessary to adjust the puncture angle of the blocking needle in the left-right direction, push the second push plate 421 extending outside the housing 44. The second push plate 421 drives the second rack 422 on one side to slide along the notch two 46 opened on the surface of the housing 44. During the movement of the second rack 422, the second slider 423 on one side slides in the second chute 425 opened on the surface of the extension plate 424. The extension plate 424 is connected to the connecting plate 414, providing guidance and support for the movement of the second rack 422. The second rack 422 meshes with the second gear 4212. As the second rack 422 moves, it drives the second gear 4212 to rotate. The second gear 4212 is coaxially connected to the sleeve rod 4211, causing the sleeve rod 4211 to rotate. Furthermore, it drives the first disk gear 426 at one end of the sleeve rod 4211 to rotate. The first disk gear 426 meshes with the second disk gear 427, driving the second disk gear 427 to rotate. The connecting rod 428 connected thereto rotates accordingly. The connecting rod 428 drives the connecting frame 429 to rotate. The connecting frame 429 further drives the rotating column 3 connected to the collar 4210 to swing left and right, thereby realizing the adjustment of the puncture angle of the blocking needle in the left-right direction. After the adjustment is completed, the corresponding puncture operation can be carried out. Through the transmission of components such as the second push plate 421, the second rack 422, the second gear 4212, the sleeve rod 4211, the first disk gear 426, the second disk gear 427, the connecting rod 428, and the connecting frame 429, the adjustment of the swing angle of the rotating column 3 left and right is realized. Combined with the up-and-down swing adjustment in the first embodiment, the blocking needle can adjust the angle in a two-dimensional space, adapt to various complex puncture requirements, expand the application range of the device, ensure the accuracy of the swing angle adjustment of the rotating column 3 left and right, enable the blocking needle to accurately reach the preset puncture position and angle, improve the accuracy and success rate of puncture. The layout of each transmission component is compact, occupying a small space, and the left and right angle adjustment can be realized by pushing the second push plate 421. The operation is flexible and convenient, facilitating medical staff to quickly adjust the puncture angle according to the specific situation of the patient during actual operation and improving work efficiency.

[0025] The technical scope of the present invention is not limited to the content described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A nerve block needle puncture locator, characterized in that, It includes a guiding ring that can guide the puncture of the blocking needle, a rotating column arranged on one side of the guiding ring, and a fixing component arranged on one side of the rotating column for fixing the arm. A connecting seat is arranged at the bottom end of the guiding ring, and the connecting seat is connected to the rotating column. An adjusting structure is arranged on the other side of the rotating column, and the adjusting structure is used for steering adjustment of the puncture of the blocking needle in different directions. The adjusting structure includes a housing arranged at the top end of the fixing component. Inside the housing, an adjusting steering component one and an adjusting steering component two are rotatably connected. The adjusting steering component one includes a rotating rod rotatably connected inside the housing. One end of the rotating rod is provided with a bevel gear assembly, and the bevel gear assembly is connected to the rotating column. The adjusting steering component one drives the blocking needle inside the guiding ring to swing up and down through the rotating column. The adjusting steering component two includes a sleeve rod rotatably connected to the outer end of the rotating rod. One side of the sleeve rod is provided with a disk gear assembly, and one side of the disk gear assembly is provided with a linkage assembly, and the linkage assembly is connected to the rotating column. The adjusting steering component two drives the blocking needle inside the guiding ring to swing left and right through the rotating column.

2. The nerve block needle puncture locator according to claim 1, wherein The adjusting steering component one includes a notch one opened on the surface of the housing. A first rack is slidably connected inside the notch one. One end of the first rack is provided with a push plate one, and the push plate one extends to the outside of the housing. The adjusting steering component one further includes a connecting plate arranged inside the housing. A sliding groove one is opened on the bottom surface of the connecting plate. A slider one is slidably connected inside the sliding groove one, and the slider one is connected to the first rack.

3. The nerve block needle puncture locator according to claim 1, characterized in that, A first gear is arranged on the outer side of the rotating rod, and the first gear is meshed and connected with the first rack. The bevel gear assembly includes a first bevel gear arranged at one end of the rotating rod. A driven rod is rotatably connected inside the housing. One end of the driven rod is provided with a second bevel gear, and the second bevel gear is meshed and connected with the first bevel gear. The bevel gear assembly further includes a third bevel gear arranged at one end of the rotating column, and the third bevel gear is meshed and connected with the second bevel gear.

4. The nerve block needle puncture locator according to claim 2, wherein, The adjusting steering component two includes a notch two opened on the surface of the housing. A second rack is slidably connected inside the notch two. One end of the second rack is provided with a push plate two, and the push plate two extends to the outside of the housing. One side of the connecting plate is provided with an extended plate. A sliding groove two is opened at the bottom end of the extended plate. A slider two is slidably connected inside the sliding groove two, and the slider two is connected to the second rack.

5. The nerve block needle puncture locator according to claim 1, characterized in that, A second gear is arranged on the outer side of the sleeve rod, and the second gear is meshed and connected with the second rack.

6. The nerve block needle puncture locator according to claim 1, wherein The disk gear assembly includes a first disk gear arranged at the other end of the sleeve rod. A connecting rod is also rotatably connected inside the housing. A second disk gear is arranged at the top end of the connecting rod, and the second disk gear is meshed and connected with the first disk gear.

7. The nerve block needle puncture locator according to claim 3, wherein The linkage assembly includes a connecting frame rotatably connected to the outer side of the connecting rod. One side of the connecting frame is provided with a sleeve ring, and the sleeve ring is connected to the rotating column.

8. The nerve block needle puncture locator according to claim 7, characterized in that, A receiving component is rotatably connected to the outer side of the connecting rod. The receiving component includes a receiving plate one rotatably connected to the outer side of the connecting rod. One side of the receiving plate one is provided with a circular ring, and the circular ring is rotatably connected to the sleeve rod. One side of the circular ring is provided with a receiving plate two, and the receiving plate two is rotatably connected to the driven rod.

9. The nerve block needle puncture locator according to claim 1, characterized in that, The fixing component includes a fixing plate arranged at the bottom end of the housing. An arc-shaped plate is arranged at the bottom end of the fixing plate. The arc-shaped plate is made of silica gel. An air pipe is embedded inside the arc-shaped plate. The air pipe is connected to a micro air pump. A suction cup is arranged on one side of the air pipe. Multiple groups of suction cups are evenly distributed. The suction cups adsorb the skin for fixation.

10. The nerve block needle puncture locator according to claim 9, characterized in that, A magnetic strip one is arranged on one side of the arc-shaped plate, and a magnetic strip two is arranged on the other side of the arc-shaped plate. The magnetic strip one and the magnetic strip two are magnetically fixed.

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