Ultrasonic-guided auxiliary fixing support for nerve block puncture

Abstract

The invention relates to an auxiliary fixing support for ultrasound-guided nerve block puncture, belongs to the field of ultrasound guidance, and aims to solve the problems that the negligence possibility is greatly increased especially when a doctor suffers from fatigue due to complex illness conditions, emergency operations or long-time high-intensity work, and a plurality of puncture needles are possibly involved in each puncture, so that the puncture difficulty is reduced. The ultrasonic-guided auxiliary fixing support for nerve block puncture solves the problem that if a previous puncture needle is not fixed well, the previous puncture needle may be touched when next puncture is carried out, then nerves are injured by the puncture needle, and the injury risk of a patient is undoubtedly increased, the ultrasonic-guided auxiliary fixing support for nerve block puncture comprises a first supporting frame, and a second supporting frame is arranged on the first supporting frame. By arranging the pushing mechanism, a doctor can choose to rotate the pushing mechanism in order to ensure that both hands can operate a puncture needle when puncturing, so that the puncture needle can be fixed to a certain extent, and the risk that a patient is injured is reduced.

Description

Technical Field

[0001] This invention relates to the field of ultrasound guidance, and in particular to an auxiliary fixation bracket for ultrasound-guided nerve block puncture. Background Technology

[0002] An ultrasound-guided nerve block puncture auxiliary fixation frame is a medical device. It is primarily used to fix the ultrasound probe and puncture needle during ultrasound-guided nerve block puncture procedures, thereby improving the accuracy, stability, and safety of the puncture.

[0003] Publication number CN113367778B discloses a stent for ultrasound-guided nerve block puncture in anesthesiology. Addressing the problems of unstable fixation, movement, and difficulty in controlling tightness of existing puncture stents fixed to ultrasound probes, this invention proposes a solution. The technical solution includes a suction cup base with a counterweight. A vertical rod is positioned on top of the counterweight, and a collar is slidably mounted on the outer side of the vertical rod. In modern medicine, ultrasound-guided nerve block puncture technology has been widely used in various surgical and pain management scenarios due to its unique advantages. Through ultrasound imaging, doctors can clearly observe the anatomical structures of nerves and surrounding tissues, providing indispensable support for precise puncture, significantly improving the success rate of nerve blocks and enhancing surgical safety. In this technical process, the auxiliary fixation stent for ultrasound-guided nerve block puncture plays a crucial role. Its main function is to provide stable support for the ultrasound probe and puncture needle, ensuring that their relative positions remain fixed during the puncture operation. This allows doctors to obtain accurate and coherent ultrasound images, thus precisely guiding the puncture process. In practice, the doctor inserts the puncture needle through the puncture port of the auxiliary fixation bracket. However, during the puncture, to prevent accidental needle displacement, the needle tip needs to be manually fixed, ensuring it fits tightly against the inner wall of the puncture port to maintain the predetermined puncture angle and depth. In reality, however, doctors focus primarily on two crucial aspects during the puncture process. First, accurate determination of the puncture location depends on the doctor's careful interpretation of the ultrasound images, requiring precise identification of the target nerve's location. Even slight deviations can lead to puncture failure or even serious complications such as nerve damage. Second, controlling the puncture depth is equally critical; excessive depth may... If the needle penetrates the nerve, it can cause irreversible damage. If it is too shallow, it cannot achieve effective nerve block. Since doctors are highly focused on controlling the puncture location and depth, they often cannot be distracted by manually fixing the needle. This is especially true when facing complex conditions, emergency surgeries, or when doctors are fatigued from long hours of high-intensity work. The possibility of such negligence increases significantly. Moreover, since each puncture may involve multiple needles, if the previous needle is not properly fixed, it may be touched during the next puncture, which could lead to nerve damage. This undoubtedly increases the risk of injury to the patient.

[0004] To address the aforementioned problems, an auxiliary fixation frame for ultrasound-guided nerve block puncture is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary fixation bracket for ultrasound-guided nerve block puncture, which solves the problem of increased risk of injury to patients.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary fixation bracket for ultrasound-guided nerve block puncture, comprising a first support frame, a suction cup fixedly connected to the lower end of the first support frame, a second support frame disposed on the upper outer side of the first support frame, a sleeve disposed on one side of the second support frame, an ultrasound probe disposed on the inner side of the sleeve, a third support frame disposed on the other side of the sleeve, a pushing mechanism disposed on the inner side of the third support frame, and a sliding mechanism disposed on one side of the pushing mechanism; The sliding mechanism includes an elastic component and a sliding component, with the sliding component disposed on one side of the elastic component; The pushing mechanism includes guide blocks slidably connected to the inner side of the third support frame. Each pair of guide blocks forms a group, and multiple guide blocks are provided. The inner side of the guide block is provided with an arc-shaped hole. A first silicone pad is fixedly connected to the upper and lower sides of one side of each group of guide blocks. A sliding plate is provided on the lower side of the other side of the guide block. A first guide groove is opened on the lower surface of the sliding plate. A first guide rod is provided inside the first guide groove. A first slider is fixedly connected to the lower end of the first guide rod. A motor is fixedly connected to the outer side of the third support frame. A threaded rod is fixedly connected to the output end of the motor. A first support plate is fixedly connected to the inner side of the end of the third support frame away from the ultrasonic probe. The connection between the first support plate and the first slider is a transverse sliding connection.

[0007] Preferably, the threaded rod is connected to the third support frame by a rotatable connection, and the threaded rod is connected to the first slider by a threaded connection.

[0008] Preferably, the first guide groove has an inverted "V" shape, and the first guide groove and the first guide rod are fitted with a clearance fit, and the two ends of the first guide groove are connected to the two sides of the sliding plate.

[0009] Preferably, the central axis of the first guide rod is perpendicular to the upper surface of the first slider, and the central axis of the first guide rod is perpendicular to the lower surface of the sliding plate.

[0010] Preferably, the elastic component includes a second silicone pad fixedly connected to the middle of the upper surface of the sliding plate, a third silicone pad fixedly connected to the lower surface of the sliding plate near the ultrasound probe, a second guide groove formed on the upper surface of the sliding plate, a second guide rod fixedly connected to a guide block inside the second guide groove, an elastic telescopic rod fixedly connected to the end of the sliding plate near the ultrasound probe, the elastic telescopic rod being connected to the sleeve in a transverse sliding connection, a first sliding groove formed on the inner side of the end of the sliding plate away from the ultrasound probe, a first spring fixedly connected to the inner side of the first sliding groove, a second slider fixedly connected to the upper end of the first spring, a first locking block fixedly connected to the end of the second slider away from the ultrasound probe, the upper and lower surfaces of the first locking block being horizontal, a first groove formed below the end of the first locking block away from the ultrasound probe, a first limiting groove formed above the first groove, two first limiting grooves being provided, and a second limiting groove formed below the end of the first locking block near the ultrasound probe.

[0011] Preferably, the end of the second guide groove near the ultrasonic probe has an inclined straight line shape, and the end of the second guide groove away from the ultrasonic probe has a horizontal straight line shape. Furthermore, the second guide groove and the second guide rod are fitted with a clearance fit.

[0012] Preferably, the inner side of the first groove and the first locking block are fitted with a clearance fit, and the width of the first locking block at the end closer to the ultrasonic probe is greater than the width of the first locking block at the end farther from the ultrasonic probe.

[0013] Preferably, a second groove is provided on the inner side of the end of the first slider near the ultrasonic probe. The sliding assembly includes a third slider that slides vertically inside the second groove. A third guide groove is provided inside the first support plate. Point a is provided on the outer side of one end of the third guide groove, point b is provided on the inner side of one end of the third guide groove, point c is provided on the outer side of the other end of the third guide groove, and point d is provided on the inner side of the other end of the third guide groove. A third guide rod is provided inside the third guide groove and is fixedly connected to the third slider. A third locking block is fixedly connected to the upper end of the third guide rod. A hole is provided inside the third support frame on the side near point a of the third guide groove. The third locking block is nested inside the hole. A second spring is fixedly connected between the third slider and the first slider.

[0014] Preferably, the height of point a of the third guide groove is higher than the height of point b of the third guide groove, and the height of point c of the third guide groove is lower than the height of point d of the third guide groove.

[0015] Preferably, the vertical height of the hole is greater than the vertical height of the third locking block, and the third locking block is fitted with the first limiting groove and the second limiting groove in a clearance fit.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The present invention provides an auxiliary fixation bracket for ultrasound-guided nerve block puncture. By setting up a pushing mechanism, the doctor can rotate the pushing mechanism during puncture to ensure that both hands can operate on the puncture needle, thus ensuring that the puncture needle is always fixed. Compared with the prior art, this avoids the doctor forgetting to fix the puncture needle when he is focused on the core task of puncture, thereby reducing the risk of patient injury.

[0017] The present invention provides an auxiliary fixation bracket for ultrasound-guided nerve block puncture. Through a sliding mechanism, when cleaning after the operation, the sliding mechanism is pulled outward to open the guide block for cleaning, thereby achieving a better cleaning effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the third support frame of the present invention; Figure 3 This is a schematic diagram of the left-side cross-sectional structure of the third guide groove of the present invention; Figure 4 This is a bottom view of the third support frame structure of the present invention; Figure 5 This is a bottom view of the first guide groove structure of the present invention; Figure 6 This is a top view of the second guide groove structure of the present invention; Figure 7 This is a schematic diagram of the front cross-sectional structure of the second slider of the present invention; Figure 8 This is a schematic diagram of the rear cross-sectional structure of the third slider of the present invention; Figure 9 This is a schematic diagram of the external structure of the arc-shaped hole of the present invention.

[0019] In the diagram: 1. First support frame; 2. Suction cup; 3. Second support frame; 4. Sleeve; 5. Ultrasonic probe; 6. Third support frame; 7. Pushing mechanism; 8. Sliding mechanism; 81. Elastic component; 82. Sliding component; 701. Guide block; 702. Arc-shaped hole; 703. First silicone pad; 704. Sliding plate; 705. First guide groove; 706. First guide rod; 707. First slider; 708. Threaded rod; 709. First support plate; 710. Motor; 8101. Second silicone pad; 8102. 8103. Third silicone pad; 8104. Second guide groove; 8105. Second guide rod; 8106. Elastic telescopic rod; 8107. First slide groove; 8108. First spring; 8109. Second slider; 8110. First locking block; 8111. First groove; 8112. First limiting groove; 8113. Second limiting groove; 8201. Second slide groove; 8202. Third guide groove; 8203. Third guide rod; 8204. Third locking block; 8205. Hole; 8206. Second spring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-9 The present invention provides a technical solution: an auxiliary fixation bracket for ultrasound-guided nerve block puncture, comprising a first support frame 1, a suction cup 2 fixedly connected to the lower end of the first support frame 1, a second support frame 3 disposed on the upper outer side of the first support frame 1, a sleeve 4 disposed on one side of the second support frame 3, an ultrasound probe 5 disposed on the inner side of the sleeve 4, a third support frame 6 disposed on the other side of the sleeve 4, a pushing mechanism 7 disposed on the inner side of the third support frame 6, and a sliding mechanism 8 disposed on one side of the pushing mechanism 7; The sliding mechanism 8 includes an elastic component 81 and a sliding component 82, with the sliding component 82 disposed on one side of the elastic component 81; The pushing mechanism 7 includes guide blocks 701 slidably connected to the inner side of the third support frame 6. Two guide blocks 701 form a group, and multiple guide blocks 701 are provided. An arc-shaped hole 702 is provided on the inner side of each guide block 701. A first silicone pad 703 is fixedly connected to one side of each guide block 701, both above and below. A sliding plate 704 is provided below the other side of the guide block 701. A first guide groove 705 is formed on the lower surface of the sliding plate 704. A first guide rod 706 is provided inside the first guide groove 705. The central axis of the first guide rod 706 is perpendicular to the upper surface of the first slider 707, and also perpendicular to the lower surface of the sliding plate 704. The first guide groove 705 has an inverted "V" shape. The first guide groove 705 and the first guide... The guide rod 706 is fitted with a clearance fit, and the two ends of the first guide groove 705 are connected to the two sides of the sliding plate 704, so that when the first guide rod 706 moves inside the first guide groove 705, it can drive the sliding plate 704 to move laterally left and right. The lower end of the first guide rod 706 is fixedly connected to the first slider 707. The outer side of the third support frame 6 is fixedly connected to the motor 710. The output end of the motor 710 is fixedly connected to the threaded rod 708. The threaded rod 708 is connected to the third support frame 6 by rotation. The threaded rod 708 is connected to the first slider 707 by thread. The inner side of the third support frame 6 away from the ultrasonic probe 5 is fixedly connected to the first support plate 709. The first support plate 709 is connected to the first slider 707 by lateral sliding connection.

[0022] The elastic component 81 includes a second silicone pad 8101 fixedly connected to the middle of the upper surface of the sliding plate 704, a third silicone pad 8102 fixedly connected to the lower surface of the sliding plate 704 near the ultrasonic probe 5, a second guide groove 8103 formed on the upper surface of the sliding plate 704, a second guide rod 8104 fixedly connected to the guide block 701 provided inside the second guide groove 8103, the end of the second guide groove 8103 near the ultrasonic probe 5 having an inclined straight shape, and the end of the second guide groove 8103 away from the ultrasonic probe 5 having an appearance of... The second guide groove 8103 and the second guide rod 8104 are in a horizontal straight line shape, and the second guide rod 8104 is in a clearance fit, so that the second guide rod 8104 will not open to the sides when moving inside the horizontal straight line of the second guide groove 8103, but will open to the sides when moving inside the inclined straight line groove of the second guide groove 8103. An elastic telescopic rod 8105 is fixedly connected to one end of the sliding plate 704 near the ultrasonic probe 5. The elastic telescopic rod 8105 is connected to the sleeve 4 in a transverse sliding connection. A first sliding groove 8106 is provided on the inner side of the end away from the ultrasound probe 5. A first spring 8107 is fixedly connected to the inner side of the first sliding groove 8106. A second slider 8108 is fixedly connected to the upper end of the first spring 8107. A first locking block 8109 is fixedly connected to the end of the second slider 8108 away from the ultrasound probe 5. A first groove 8110 is formed below the end of the first locking block 8109 away from the ultrasound probe 5. A first limiting groove 8111 is provided above the first groove 8110. There are two first limiting grooves 8111. A second limiting groove 8112 is provided below the end of 8109 near the ultrasonic probe 5. The inner side of the first sliding groove 8106 and the first locking block 8109 are fitted with a clearance fit. The width of the first locking block 8109 near the ultrasonic probe 5 is greater than the width of the first locking block 8109 away from the ultrasonic probe 5. The upper and lower surfaces of the first locking block 8109 are both horizontal, so that the first locking block 8109 will not shake when it moves inside the first sliding groove 8106, and the first locking block 8109 will not move out of the inner side of the first sliding groove 8106.

[0023] The first slider 707 has a second groove 9 on its inner side near the ultrasonic probe 5. The sliding assembly 82 includes a third slider 8201 that slides vertically inside the second groove 9. The first support plate 709 has a third guide groove 8202 inside. Point a is provided on the outer side of one end of the third guide groove 8202, point b is provided on the inner side of one end of the third guide groove 8202, point c is provided on the outer side of the other end of the third guide groove 8202, and point d is provided on the inner side of the other end of the third guide groove 8202. A third guide rod 8203 is fixedly connected to the third slider 8201 inside the third guide groove 8202. A third locking block 8204 is fixedly connected to the upper end of the third guide rod 8203. A hole 8205 is provided inside the third support frame 6 near point a of the third guide groove 8202. The third locking block 8204 is nested inside the hole 8205. The height of the third guide rod 8203 is higher than the height of point a in the third guide groove 8202b, and the height of point d in the third guide groove 8202 is lower than the height of point c in the third guide groove 8202. This causes the third guide rod 8203 to move along the trajectory of the third guide groove 8202 to the inner side of the upper end of the third guide groove 8202 when it moves to point a and back. When the third guide rod 8203 moves along the trajectory of the third guide groove 8202 to the inner side of the lower end of the third guide groove 8202 when it moves to point d and back. The vertical height of the hole 8205 is greater than the vertical height of the third locking block 8204, and the third locking block 8204 is fitted with the first limiting groove 8111 and the second limiting groove 8112 with a clearance fit. This causes the third locking block 8204 to move to the inner side of the first limiting groove 8111 and the second limiting groove 8112. A second spring 8206 is fixedly connected between the third slider 8201 and the first slider 707.

[0024] When puncture is required, because the first support plate 709 and the first slider 707 are connected by a lateral sliding connection, when the electric threaded rod 708 is activated, it will drive the first slider 707 to move laterally. Since the first slider 707 and the first guide rod 706 are connected by a fixed connection, the first guide rod 706 is located inside the first guide groove 705. The first guide groove 705 has an inverted "V" shape, and the first guide groove 705 and the first guide rod 706 are fitted with a clearance fit. Furthermore, both ends of the first guide groove 705 are connected to the two sides of the sliding plate 704, allowing the first guide rod 706 to move laterally within the first guide groove 705. When the device moves inside the first guide groove 705, it pushes the inner wall of the first guide groove 705, causing the first slider 707 to move outward along the extension direction of the elastic telescopic rod 8105. This causes the second silicone pad 8101 and the third silicone pad 8102 to move outward, opening the upper and lower surfaces of the arc-shaped hole 702. When the upper and lower surfaces of the arc-shaped hole 702 are opened enough to allow the puncture needle to enter, the electric threaded rod 708 stops rotating, fixing the sliding plate 704. The puncture needle is then passed through the inner side of the arc-shaped hole 702. Since multiple punctures are required, after each puncture, the electric threaded rod 708 is restarted to proceed with the next second silicone pad 8101 and the third silicone pad 8102. When silicone pad 8102 opens, the first guide rod 706 can emerge from the other end of the first guide groove 705, causing the second silicone pad 8101 and the third silicone pad 8102 to move back and, together with the first silicone pad 703, clamp and fix the puncture needle. During puncture, using both hands to operate the puncture needle provides better stability. In situations requiring precise control of the needle's direction and depth, such as when puncturing nerves near important blood vessels, holding the needle with both hands allows for more accurate control of the insertion force and direction. To reduce needle wobbling, both hands must be free to operate the needle; one hand cannot be used. By pulling the sliding plate 704 and the elastic telescopic rod 8105, the second silicone pad 8101 and the third silicone pad 8102 open the top of the arc-shaped hole 702. Because the doctor needs two hands to control the puncture needle, the second silicone pad 8101 and the third silicone pad 8102 must be open. This requires the doctor to control the electric threaded rod 708 to open the top of the arc-shaped hole 702. Using the electric threaded rod 708 will inevitably fix the puncture needle, preventing the doctor from forgetting to fix the puncture needle when focused on the core task of puncture, thereby reducing the risk of patient injury.

[0025] When the first slider 707 slides, it drives the third slider 8201 to slide, causing the third guide rod 8203 and the third locking block 8204 to slide. Since the third locking block 8204 is in clearance fit with the first limiting groove 8111 and the second limiting groove 8112, the third locking block 8204 can be locked into the inner side of the first limiting groove 8111, fixing the position of the first locking block 8109 and the sliding plate 704. This, in turn, fixes the position of the second silicone pad 8101 and the third silicone pad 8102, preventing the sliding plate 704 from moving due to subsequent errors, thereby reducing the risk of patient injury.

[0026] After the doctor completes the puncture, the release effect of the medication needs to be checked. If the release effect does not meet expectations, the first locking block 8109 can be pulled upwards, causing the first limiting groove 8111 to move out of the range of the third locking block 8204. The first locking block 8109 can be pulled to the side away from the guide block 701, so that the first limiting groove 8111 and the third locking block 8204 on the side closer to the ultrasound probe 5 are on the same vertical line. Pressing down the first locking block 8109 can cause the third locking block 8204 to continue to limit the first locking block 8109, causing the corresponding second silicone pad 8101 and third silicone pad 8102 to move to the side away from the first silicone pad 703, so that the arc-shaped hole 702 opens and can be re-punctured.

[0027] When removing the needle after the surgery, the electric threaded rod 708 is activated to move in the opposite direction, causing the third slider 8201 and the third guide rod 8203 to move in the opposite direction. Because the height of point a of the third guide groove 8202 is higher than the height of point b of the third guide groove 8202, and the height of point d of the third guide groove 8202 is lower than the height of point c of the third guide groove 8202, when the second spring 8206 is in its natural state, the height of the third guide rod 8203 and the third slider 8201 will be higher than point b and lower than point d. When the third guide rod 8203 moves to the position of point d, it moves downward, causing the third guide rod 8203 to move below the third guide groove 8202, causing the third locking block 8204 to move downward. The first guide rod 706 continues to push the sliding plate 704, allowing the second silicone pad 8101 and the third silicone pad 8102 to be freed up for both hands to operate on the puncture needle, making needle removal more stable and reducing the risk of patient injury.

[0028] After the surgery, blood or body fluid may remain on the surface and inside of the puncture needle during removal, which can easily remain inside the arc-shaped hole 702 and requires cleaning. As the third locking block 8204 moves downward, the second limiting groove 8112 can move above the third locking block 8204 to continue limiting the sliding plate 704. Because the second guide groove 8103 has an inclined straight-line appearance at the end near the ultrasound probe 5 and a horizontal straight-line appearance at the end away from the ultrasound probe 5, and the second guide groove 8103 and the second guide rod 8104 are in a clearance fit, the second guide rod 8104 moves to the inclined straight-line inside the second guide groove 8103, opening both guide blocks 701 and the arc-shaped hole 702 inside. The areas covered by the second silicone pad 8101 and the third silicone pad 8102 are also opened simultaneously, saving time. The increased contact surface of the arc-shaped hole 702 results in better cleaning.

[0029] During puncture, the third locking block 8204 is positioned above, while the upper and lower surfaces of the first locking block 8109 are horizontal. A first groove 8110 is formed below the end of the first locking block 8109 furthest from the ultrasound probe 5. The upper inner surface of the first groove 8110 is higher than the lower surface of the first locking block 8109. This ensures that when the first locking block 8109 and the sliding plate 704 are pulled for re-puncture, the inclined groove of the second guide groove 8103 will not contact the second guide rod 8104, thus preventing the two guide blocks 701 from opening directly and preventing the needle from suddenly losing its limit. Since the stability of the puncture needle in the tissue partly depends on the constraint of the arc-shaped hole 702, without this constraint, its bending direction in the tissue may be affected by various factors, such as tissue elasticity, patient breathing, and muscle movement, which may cause the angle of the puncture needle to change significantly and irregularly, thereby reducing the risk of patient injury.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary fixing support for ultrasound-guided nerve block puncture, comprising a first support frame (1), a suction cup (2) fixedly connected to the lower end of the first support frame (1), a second support frame (3) arranged on the outer side above the first support frame (1), a sleeve (4) arranged on one side of the second support frame (3), an ultrasound probe (5) arranged on the inner side of the sleeve (4), and a third support frame (6) arranged on the other side of the sleeve (4), characterized in that: The inner side of the third support frame (6) is provided with a pushing mechanism (7), one side of the pushing mechanism (7) is provided with a sliding mechanism (8); The sliding mechanism (8) comprises an elastic assembly (81) and a sliding assembly (82), and the sliding assembly (82) is arranged on one side of the elastic assembly (81); The pushing mechanism (7) comprises a guide block (701) slidingly connected to the inner side of the third support frame (6), every two guide blocks (701) form a group, and a plurality of guide blocks (701) are arranged, the inner side of the guide block (701) is provided with an arc-shaped hole (702), one side of one of the guide blocks (701) in each group is fixedly connected with a first silica gel pad (703) above and below, the other side of the guide block (701) is provided with a sliding plate (704) below, the lower surface of the sliding plate (704) is provided with a first guide groove (705), the first guide groove (705) is provided with a first guide rod (706) inside, the lower end of the first guide rod (706) is fixedly connected with a first sliding block (707), the outer side of the third support frame (6) is fixedly connected with a motor (710), the output end of the motor (710) is fixedly connected with a threaded rod (708), the inner side of the end of the third support frame (6) away from the ultrasonic probe (5) is fixedly connected with a first support plate (709), and the first support plate (709) and the first sliding block (707) are transversely and slidingly connected.

2. The auxiliary fixing support for ultrasound-guided nerve block puncture according to claim 1, characterized in that: The threaded rod (708) and the third support frame (6) are rotationally connected, and the threaded rod (708) and the first sliding block (707) are threadedly connected.

3. The auxiliary fixation support for ultrasound-guided nerve block puncture according to claim 1, characterized in that: The first guide groove (705) is in the shape of an inverted "V", the first guide groove (705) and the first guide rod (706) are clearance-fitted, and the two ends of the first guide groove (705) are communicated with the two side surfaces of the sliding plate (704).

4. The auxiliary fixation support for ultrasound-guided nerve block puncture according to claim 1, characterized in that: The central axis of the first guide rod (706) is perpendicular to the upper surface of the first sliding block (707), and the central axis of the first guide rod (706) is perpendicular to the lower surface of the sliding plate (704).

5. The auxiliary fixation support for ultrasound-guided nerve block puncture according to claim 1, characterized in that: The elastic assembly (81) comprises a second silica gel pad (8101) fixedly connected to the middle of the upper surface of the sliding plate (704), a third silica gel pad (8102) fixedly connected to the lower surface of the sliding plate (704) close to the ultrasonic probe (5), a second guide groove (8103) formed in the upper surface of the sliding plate (704), a second guide rod (8104) fixedly connected to the guide block (701) and arranged inside the second guide groove (8103), an elastic telescopic rod (8105) fixedly connected to one end of the sliding plate (704) close to the ultrasonic probe (5), wherein the elastic telescopic rod (8105) is transversely and slidably connected to the sleeve (4), a first sliding groove (8106) arranged inside one end of the sliding plate (704) away from the ultrasonic probe (5), a first spring (8107) fixedly connected to the inner side of the first sliding groove (8106), a second sliding block (8108) fixedly connected to the upper end of the first spring (8107), a first clamping block (8109) fixedly connected to one end of the second sliding block (8108) away from the ultrasonic probe (5), wherein the upper and lower surfaces of the first clamping block (8109) are horizontal surfaces, a first recess (8110) formed below one end of the first clamping block (8109) away from the ultrasonic probe (5), a first limiting groove (8111) arranged above the first recess (8110), two first limiting grooves (8111), and a second limiting groove (8112) formed below one end of the first clamping block (8109) close to the ultrasonic probe (5).

6. The auxiliary fixation support for ultrasound-guided nerve block puncture according to claim 5, characterized in that: The second guide groove (8103) is in the form of an inclined straight line at one end close to the ultrasonic probe (5), and in the form of a horizontal straight line at one end away from the ultrasonic probe (5), and the second guide groove (8103) is in clearance fit with the second guide rod (8104).

7. The auxiliary fixation support for ultrasound-guided nerve block puncture according to claim 5, characterized in that: The inner side surface of the first sliding groove (8106) is in clearance fit with the first clamping block (8109), and the width of one end of the first clamping block (8109) close to the ultrasonic probe (5) is greater than the width of one end of the first clamping block (8109) away from the ultrasonic probe (5).

8. The auxiliary fixation support for ultrasound-guided nerve block puncture according to claim 1, characterized in that: The first sliding block (707) is provided with a second sliding groove (9) on the inner side of one end of the ultrasonic probe (5), the sliding assembly (82) comprises a third sliding block (8201) vertically sliding in the inner side of the second sliding groove (9), the inner side of the first supporting plate (709) is provided with a third guide groove (8202), one end of the outer side of the third guide groove (8202) is provided with a point a, one end of the inner side of the third guide groove (8202) is provided with a point b, the other end of the outer side of the third guide groove (8202) is provided with a point c, the other end of the inner side of the third guide groove (8202) is provided with a point d, the inner side of the third guide groove (8202) is provided with a third guide rod (8203) fixedly connected with the third sliding block (8201), the upper end of the third guide rod (8203) is fixedly connected with a third clamping block (8204), the inner side of the third supporting frame (6) close to the side of the point a of the third guide groove (8202) is provided with a hole (8205), the third clamping block (8204) is nested in the inner side of the hole (8205), and the second spring (8206) is fixedly connected between the third sliding block (8201) and the first sliding block (707).

9. The auxiliary fixation stand for ultrasound-guided nerve block puncture according to claim 8, characterized in that: The height of the point a of the third guide groove (8202) is higher than the height of the point b of the third guide groove (8202), and the height of the point c of the third guide groove (8202) is lower than the height of the point d of the third guide groove (8202).

10. The auxiliary fixation stand for ultrasound-guided nerve block puncture according to claim 8, characterized in that: The upper and lower heights of the hole (8205) are greater than the upper and lower heights of the third clamping block (8204), and the cooperation mode of the third clamping block (8204) and the first limiting groove (8111) and the second limiting groove (8112) is gap cooperation.

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