Nerve block anesthetic injection device

Abstract

The invention relates to the technical field of medical injection instruments, and particularly discloses a nerve block anesthetic injection device which comprises a base, a mounting frame is mounted on the top surface of the base, a pressurizing assembly is mounted in the mounting frame in a matched mode, a transmission pipe is arranged on the pressurizing assembly, and a transfer sleeve is arranged on the side, away from the pressurizing assembly, of the outer wall of the transmission pipe. A storage assembly is cooperatively installed in an inner cavity of the transfer sleeve, a limiting assembly is cooperatively installed in the storage assembly, an infusion tube is arranged on the storage assembly, and a needle head is installed on the side, away from the storage assembly, of the infusion tube; according to the nerve block anesthetic injection device, the pressurizing assembly and the containing assembly are arranged in the nerve block anesthetic injection device, in the using process of the device, through mutual cooperation of the structures, medical staff can use the device with hands and feet in the using process of the device, and therefore the situation that the hand holding the needle conducts needle position adjusting and injection actions at the same time is avoided; the effects of reducing the difficulty of nerve block anesthetic injection and reducing the labor intensity of medical staff are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical injection equipment, and in particular relates to a nerve block anesthetic injection device. Background Art

[0002] Nerve block anesthesia is a technique that blocks specific nerve conduction pathways through local injection of anesthetics. It is widely used in surgical anesthesia, chronic pain and emergency analgesia.

[0003] In existing nerve block anesthesia injection devices, one person is responsible for fixing and adjusting the needle position (such as adjusting the puncture direction according to the body surface bony landmarks or patient feedback), and another person is responsible for injecting the anesthetic drug. Alternatively, the doctor holding the needle can operate the ultrasound probe for real-time imaging with one hand and hold the puncture needle with the other hand for insertion (and injection at the same time), so as to accurately locate the nerve and surrounding structures and reduce the number of punctures and the risk of complications.

[0004] The above two injection methods have the following problems:

[0005] 1. Two-person operation requires two people to cooperate to ensure the stability of the needle and the uniform injection of the drug, which requires a high degree of tacit understanding between the doctors;

[0006] 2. When operated by one person, the doctor's hand holding the needle needs to adjust the position of the needle and the injection action at the same time. Nerve block anesthesia needs to be injected slowly little by little (ensuring that a small amount is injected each time), and the direction of the needle tip needs to be adjusted to allow the drug to penetrate from multiple angles and cover more comprehensively. However, when manually pushing the injection, it is difficult to maintain constant hand strength, which may cause the needle tip to penetrate the blood vessel or nerve sheath due to excessive force, or insufficient drug diffusion due to insufficient force;

[0007] Therefore, this solution proposes a nerve block anesthetic injection device to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide a nerve block anesthetic injection device to solve the problem in the prior art that it is difficult to maintain constant hand strength during manual injection, which may cause the needle tip to penetrate the blood vessel or nerve sheath due to excessive force, or cause insufficient drug diffusion due to insufficient force.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solutions: a nerve block anesthetic injection device, comprising a base, a mounting frame is mounted on the top surface of the base, a pressurizing component is mounted in the mounting frame, a transmission tube is arranged on the pressurizing component, a transfer sleeve is arranged on the side of the outer wall of the transmission tube away from the pressurizing component, a storage component is mounted in the inner cavity of the transfer sleeve, a limit position component is mounted in the storage component, an infusion tube is arranged on the storage component, and a needle is mounted on the side of the infusion tube away from the storage component;

[0010] The storage component includes a storage tube, through holes are symmetrically formed in the outer wall of the storage tube, and a connecting tube is slidably installed in the inner cavity of the storage tube;

[0011] The limiting component includes a sliding ring, connecting ropes are respectively connected to the upper and lower sides of one side of the connecting tube, and the ends of the connecting ropes far from the second piston are connected to the sliding ring;

[0012] Plastic limiting racks are symmetrically installed on the outer wall of the storage tube, grooves are symmetrically formed in the inner side of the sliding ring, a resisting block is installed in the inner cavity of the groove, the plastic limiting rack is slidably arranged inside the groove, and the resisting block is engaged with the teeth on the plastic limiting rack.

[0013] Preferably: A diversion tube is installed on one side of the storage tube, a connecting tube is installed on the side of the inner cavity of the diversion tube far from the storage tube, and a thread is provided on the outer wall of the connecting tube;

[0014] The inner cavity of the transfer sleeve is provided with a thread, and the transfer sleeve and the connecting tube are connected to each other through the thread;

[0015] The infusion tube is arranged at one end of the storage tube, and the diversion tube and the infusion tube are respectively arranged at both ends of the storage tube.

[0016] Preferably: The diversion tube communicates with the inner cavity of the storage tube, a rubber ventilation tube is installed on the side of the inner cavity of the storage tube close to the diversion tube, the diversion tube is located inside the rubber ventilation tube, and the end of the rubber ventilation tube far from the diversion tube is connected to the second piston.

[0017] Preferably: The teeth on the plastic limiting rack are inclined, and the inclination direction of the teeth forms an acute angle with the flowing direction of the injection solution. One side of the resisting block is inclined, and the inclined surface of the resisting block fits with the teeth of the plastic limiting rack.

[0018] Preferably: The pressurizing component includes a sliding plate and a first spring. The bottom corners of the inner cavity of the installation frame are respectively installed with a first spring, and a sliding plate is commonly connected between the tops of the four first springs. Positioning columns are respectively installed on the left and right inner side walls of the installation frame. The sliding plate is slidably arranged between the two positioning columns, and limiting frames are respectively installed above the outer walls of the two positioning columns.

[0019] Preferably: A pressing rod is installed on the bottom surface of the sliding plate, an installation cylinder is installed on the bottom surface of the inner cavity of the installation frame, a sliding block is slidably installed in the installation cylinder, a first piston is installed on the bottom surface of the sliding block, and the end surface of the sliding block is connected to the bottom surface of the pressing rod.

[0020] Preferably: An air inlet pipe and an air outlet pipe are respectively arranged on the side wall of the installation cylinder;

[0021] The intake pipe is connected to the inner cavity of the installation cylinder. A second connecting ring is installed on the inner wall of the intake pipe. A second spring is installed on the side of the second connecting ring close to the inner cavity of the installation cylinder. A first sealing bead is installed on the side of the second spring away from the second connecting ring. The first sealing bead is located between the installation cylinder and the intake pipe, and the first sealing bead blocks the intake pipe.

[0022] On the side of the inner cavity of the outlet pipe away from the inner cavity of the sliding plate, a first connecting ring is installed. A fifth spring is installed on the side of the first connecting ring away from the inner cavity of the installation cylinder. A second sealing bead is installed on the side of the fifth spring away from the inner cavity of the installation cylinder. The second sealing bead blocks the outlet pipe.

[0023] Preferably: A connecting sleeve is installed on the outer wall of the outlet pipe. The cross-section of the connecting sleeve is in the shape of "concave". The second sealing bead is located in the inner cavity of the connecting sleeve. A transmission pipe is installed in the inner cavity of the connecting sleeve.

[0024] Preferably: A chute is provided on the side wall of the storage pipe. A through groove is provided on the bottom surface of the inner cavity of the chute. Installation rods are symmetrically arranged between the inner walls of the chute. An arc-shaped block is slidably arranged between the two installation rods. A fourth spring is installed on one side of the arc-shaped block. The end of the fourth spring away from the arc-shaped block is connected to the inner side wall of the chute.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. By setting a pressurizing component and a storage component in a nerve block anesthetic injection device, during the use of the device, through the mutual cooperation between the above structures, it is realized that during the use of the device, medical staff can use both hands and feet, thereby avoiding adjusting the position of the needle and the injection action with the hand holding the needle at the same time, achieving the effects of reducing the difficulty of nerve block anesthetic injection and reducing the labor intensity of medical staff.

[0027] 2. By setting a pressurizing component, a limiting component and a storage component in a nerve block anesthetic injection device, during the use of the device, through the mutual cooperation between the above structures, it is realized that each injection of the medicine is a constant small amount, achieving the effect of quantitatively, in a small amount and stably and controllably injecting the medicine into the human body, avoiding the problems that when manually injecting, it is difficult to keep the hand force constant, and it may cause the needle tip to penetrate the blood vessel or nerve sheath due to excessive force, or the drug diffusion is insufficient due to insufficient force.

[0028] 3. By setting a pressurizing component, a limiting component and a storage component in a nerve block anesthetic injection device, during the use of the device, through the mutual cooperation between the above structures, it is realized that medical staff can operate the device alone and efficiently, improving the convenience of using the device. Description of the Drawings

[0029] Figure 1 Isometric view of the present invention;

[0030] Figure 2 Cross-sectional view of the present invention;

[0031] Figure 3 Schematic structural view of the installation cylinder in the present invention;

[0032] Figure 4 Schematic internal structural view of the installation cylinder in the present invention;

[0033] Figure 5 Schematic structural view of the storage component in the present invention;

[0034] Figure 6 Schematic cross-sectional structural view of the storage component in the present invention;

[0035] Figure 7 Schematic installation structural view of the rubber ventilation pipe in the present invention;

[0036] Figure 8 Schematic structural view of the plastic limit rack in the present invention;

[0037] Figure 9 Schematic installation structural view of spring four in the present invention.

[0038] In the figure: 1, base; 2, installation frame; 3, pressurization component; 301, sliding plate; 302, spring one; 303, installation cylinder; 304, pressing rod; 305, intake pipe; 306, outlet pipe; 307, connecting sleeve; 308, sliding block; 309, piston one; 310, spring two; 311, closing bead one; 312, connecting ring one; 313, spring five; 314, closing bead two; 315, connecting ring two; 4, positioning column; 5, limit frame; 6, transmission pipe; 7, transfer sleeve; 8, storage component; 801, storage pipe; 802, through hole; 803, rubber ventilation pipe; 804, diversion pipe; 805, connecting pipe; 806, piston two; 807, chute; 808, through slot; 809, installation rod; 810, spring four; 811, arc-shaped block; 9, limit component; 901, sliding ring; 902, connecting rope; 903, plastic limit rack; 904, groove; 905, abutting block; 10, infusion tube; 11, needle; 12, supporting block. Detailed implementation manners

[0039] The following will be combined with the attached Figure 1 to the attached Figure 9The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that if there are directions involved in the embodiments of the present invention, they shall be based on the directions shown in the drawings, such as front and back. Figure 1 The specific Figure 1 The left side is the front, Figure 1 The right side is the back; at the same time Figure 2 As shown in the figure, the left-right direction is roughly the horizontal direction, and the up-down direction shown in the figure is the vertical direction. If a certain posture changes, the directional indication will also change accordingly.

[0041] Reference Figures 1 - 9 As shown, the present invention provides a nerve block anesthetic injection device, comprising a base 1, a mounting frame 2 is mounted on the top surface of the base 1, a pressurizing component 3 is mounted in the mounting frame 2, a transmission tube 6 is arranged on the pressurizing component 3, a transfer sleeve 7 is arranged on the side of the outer wall of the transmission tube 6 away from the pressurizing component 3, a storage component 8 is mounted in the inner cavity of the transfer sleeve 7, a limiting component 9 is mounted in the storage component 8, an infusion tube 10 is arranged on the storage component 8, and a needle 11 is mounted on the side of the infusion tube 10 away from the storage component 8;

[0042] Among them, a support block 12 is provided on the side of the outer wall of the needle 11 close to the infusion tube 10, and the support block 12 facilitates medical staff to control and adjust the direction of the needle 11;

[0043] The storage assembly 8 includes a storage tube 801, the outer wall of which is symmetrically provided with through holes 802, and the inner cavity of the storage tube 801 is slidably provided with a connecting tube 805;

[0044] The limiting assembly 9 includes a sliding ring 901. A connecting rope 902 is connected to the upper and lower sides of one side of the connecting pipe 805. The end of the connecting rope 902 away from the second piston 806 is connected to the sliding ring 901.

[0045] A plastic limiting rack 903 is symmetrically installed on the outer wall of the storage tube 801, a groove 904 is symmetrically opened on the inner side of the sliding ring 901, a resistance block 905 is installed in the inner cavity of the groove 904, the plastic limiting rack 903 is slidably set inside the groove 904, and the resistance block 905 and the teeth on the plastic limiting rack 903 are mutually engaged.

[0046] In a further embodiment, referring to Figures 1 - 9A flow guide tube 804 is installed on one side of the receiving tube 801, and a connecting tube 805 is installed on the side of the inner cavity of the flow guide tube 804 away from the receiving tube 801, and the outer wall of the connecting tube 805 is provided with threads;

[0047] The inner cavity of the transfer sleeve 7 is provided with threads, and the transfer sleeve 7 and the connecting pipe 805 are connected to each other through the threads;

[0048] The infusion tube 10 is arranged at one end of the receiving tube 801, and the flow guide tube 804 and the infusion tube 10 are arranged at both ends of the receiving tube 801 respectively;

[0049] A slide groove 807 is provided on the side wall of the storage tube 801, a through groove 808 is provided on the bottom surface of the inner cavity of the slide groove 807, mounting rods 809 are symmetrically provided between the inner walls of the slide groove 807, an arc block 811 is slidably provided between the two mounting rods 809, a spring 810 is installed on one side of the arc block 811, and one end of the spring 810 away from the arc block 811 is connected to the inner wall of the slide groove 807;

[0050] In this example, before use, the transfer sleeve 7 and the connecting tube 805 are first connected to each other, the storage tube 801 is placed horizontally, and the through groove 808 is facing upwards, and then the medicine to be injected is injected into the storage tube 801 through the through groove 808. Then, under the action of the spring four 810, the arc block 811 slides in the slide groove 807 and blocks the through groove 808, thereby completing the preparation work before the use of the device.

[0051] In a further embodiment, referring to Figures 1 - 7 The flow guide tube 804 is connected to the inner cavity of the receiving tube 801. A rubber vent tube 803 is installed on one side of the inner cavity of the receiving tube 801 close to the flow guide tube 804. The flow guide tube 804 is located inside the rubber vent tube 803. One end of the rubber vent tube 803 away from the flow guide tube 804 is connected to the piston 2 806.

[0052] In this embodiment, the rubber vent tube 803 is located between the guide tube 804 and the second piston 806. When the pressurizing assembly 3 is inflated, the rubber vent tube 803 is filled with gas, thereby pushing the second piston 806 to move.

[0053] In a further embodiment, referring to Figures 1 - 8 The teeth on the plastic limit rack 903 are inclined, and the angle between the inclined direction of the teeth and the flow direction of the injection liquid is an acute angle. One side of the resistance block 905 is inclined, and the inclined surface of the resistance block 905 fits with the teeth of the plastic limit rack 903.

[0054] In this embodiment, the teeth of the plastic limiting rack 903 fit in the groove 904 , providing resistance to the movement of the groove 904 and the sliding ring 901 , and preventing the groove 904 and the sliding ring 901 from moving in the opposite direction.

[0055] In a further embodiment, referring to Figures 1 - 4 , the pressurizing assembly 3 includes a sliding plate 301 and a first spring 302. The four corners of the inner cavity bottom surface of the mounting frame 2 are respectively provided with a first spring 302. A sliding plate 301 is jointly connected between the tops of the four first springs 302. Positioning columns 4 are respectively installed on the inner side walls of the left and right sides of the mounting frame 2. The sliding plate 301 is slidably arranged between the two positioning columns 4. Limiting frames 5 are respectively installed above the outer walls of the two positioning columns 4. A pressing rod 304 is installed on the bottom surface of the sliding plate 301. An installation cylinder 303 is installed on the inner cavity bottom surface of the mounting frame 2. A sliding block 308 is slidably installed in the installation cylinder 303. A first piston 309 is installed on the bottom surface of the sliding block 308. The end face of the sliding block 308 is connected to the bottom surface of the pressing rod 304. An air inlet pipe 305 and an air outlet pipe 306 are respectively arranged on the side wall of the installation cylinder 303;

[0056] The air inlet pipe 305 communicates with the inner cavity of the installation cylinder 303. A second connecting ring 315 is installed on the inner wall of the air inlet pipe 305. A second spring 310 is installed on the side of the second connecting ring 315 close to the inner cavity of the installation cylinder 303. A first sealing bead 311 is installed on the side of the second spring 310 away from the second connecting ring 315. The first sealing bead 311 is located between the installation cylinder 303 and the air inlet pipe 305, and the first sealing bead 311 blocks the air inlet pipe 305;

[0057] A first connecting ring 312 is installed on the side of the inner cavity of the air outlet pipe 306 away from the inner cavity of the sliding plate 301. A fifth spring 313 is installed on the side of the first connecting ring 312 away from the inner cavity of the sliding plate 301. A second sealing bead 314 is installed on the side of the fifth spring 313 away from the inner cavity of the installation cylinder 303. The second sealing bead 314 blocks the air outlet pipe 306; A connecting sleeve 307 is installed on the outer wall of the air outlet pipe 306. The cross section of the connecting sleeve 307 is in a "concave" shape. The second sealing bead 314 is located in the inner cavity of the connecting sleeve 307. A transmission pipe 6 is installed in the inner cavity of the connecting sleeve 307;

[0058] In this embodiment, medical staff step on the sliding plate 301 to drive the pressing rod 304 downward, and under the action of the first spring 302, the pressing rod 304 and the sliding plate 301 are reset. When the pressing rod 304 moves upward, it drives the sliding block 308 and the first piston 309 upward. At this time, the volume of the installation cylinder 303 becomes larger, so the internal pressure of the installation cylinder 303 becomes smaller. Under the action of the atmospheric pressure, the installation sealing bead 311 will be pushed inward, and the air flow will enter the interior of the installation cylinder 303 along the intake pipe 305. When the pressing rod 304 stops rising, the sealing bead 311 will block the intake pipe 305 under the action of the second spring 310. Subsequently, the medical staff step on the sliding plate 301 to drive the pressing rod 304, the sliding block 308 and the first piston 309 downward. At this time, the air inside the installation cylinder 303 is compressed and pushes the second sealing bead 314 into the inner cavity of the connecting sleeve 307. Thus, the air inside the installation cylinder 303 will be conveyed along the outlet pipe 306, the connecting sleeve 307 and the transmission pipe 6, and finally enter the rubber ventilation pipe 803 through the connecting pipe 805 and the diversion pipe 804, and push the second piston 806 to move.

[0059] The working principle of the present invention is as follows: Before using the device, first connect the transfer sleeve 7 with the connecting pipe 805, place the storage pipe 801 horizontally, and orient the through groove 808 upward. Subsequently, inject the medicine to be injected through the through groove 808 into the storage pipe 801. Then, under the action of the fourth spring 810, the arc-shaped block 811 slides in the sliding groove 807 and blocks the through groove 808, thus completing the preparation work before using the device.

[0060] Subsequently, the medical staff step on the sliding plate 301 to drive the pressing rod 304 downward, and under the action of the first spring 302, the pressing rod 304 and the sliding plate 301 are reset.

[0061] When the pressing rod 304 moves upward, it drives the sliding block 308 and the first piston 309 upward. At this time, the volume of the installation cylinder 303 becomes larger, so the internal pressure of the installation cylinder 303 becomes smaller. Under the action of the atmospheric pressure, the installation sealing bead 311 will be pushed inward, and the air flow will enter the interior of the installation cylinder 303 along the intake pipe 305.

[0062] When the pressing rod 304 stops rising, the sealing bead 1 311 blocks the air inlet pipe 305 under the action of the spring 2 310, and then the medical staff presses the sliding plate 301 to drive the pressing rod 304, the sliding block 308 and the piston 1 309 to move downward. At this time, the air inside the installation cylinder 303 is compressed and pushes the sealing bead 2 314 to move toward the inner cavity of the connecting sleeve 307, so that the air inside the installation cylinder 303 is transported along the air outlet pipe 306, the connecting sleeve 307 and the transmission pipe 6, and finally enters the rubber ventilation pipe 803 through the connecting pipe 805 and the guide pipe 804, and pushes the piston 2 806 to move;

[0063] As the piston 2 806 moves, the piston 2 806 will push the medicine in the storage tube 801 to be transported, and finally injected into the human body through the infusion tube 10 and the needle 11;

[0064] During the injection process, the movement of the second piston 806 will drive the movement of the sliding ring 901 and the abutment block 905. Since the abutment block 905 is limited between the adjacent teeth of the plastic limiting rack 903, whenever the second piston 806 moves a certain distance, the sliding ring 901 will break through the adjacent teeth on the plastic limiting rack 903 and enter between the other two teeth.

[0065] Each time the medical staff steps on the piston 806, a force will be applied to the piston 806 through the airflow. When the force pushing the piston 806 breaks through the resistance of the plastic limit rack 903 to the groove 904, the piston 806 will move, and the sliding ring 901 and the groove 904 will be pulled to move by the connecting rope 902. After moving a certain distance, the space in the rubber ventilation tube 803 increases, thereby reducing the force pushing the piston 806, and then it is necessary to step on the sliding plate 301 again, and this can be repeated to achieve the effect of quantitative, small amount and stable controllable injection of the medicine.

[0066] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A nerve block anesthetic injection device, comprising a base (1), characterized in that, A mounting frame (2) is mounted on the top surface of the base (1), a pressurizing component (3) is mounted in the mounting frame (2), a transmission tube (6) is arranged on the pressurizing component (3), a transfer sleeve (7) is arranged on the outer wall of the transmission tube (6) at a side away from the pressurizing component (3), a storage component (8) is mounted in the inner cavity of the transfer sleeve (7), a limiter component (9) is mounted in the storage component (8), an infusion tube (10) is arranged on the storage component (8), and a needle (11) is mounted on the side of the infusion tube (10) away from the storage component (8); The storage assembly (8) comprises a storage tube (801), the outer wall of the storage tube (801) is symmetrically provided with through holes (802), and the inner cavity of the storage tube (801) is slidably provided with a connecting tube (805); The limiting assembly (9) comprises a sliding ring (901), and connecting ropes (902) are respectively connected to the upper and lower sides of one side of the connecting tube (805), and one end of the connecting rope (902) away from the second piston (806) is connected to the sliding ring (901); A plastic limiting rack (903) is symmetrically mounted on the outer wall of the storage tube (801); a groove (904) is symmetrically provided on the inner side of the sliding ring (901); a resistance block (905) is mounted in the inner cavity of the groove (904); the plastic limiting rack (903) is slidably arranged inside the groove (904); and the resistance block (905) and the teeth on the plastic limiting rack (903) are mutually engaged.

2. The nerve block anesthetic injection device according to claim 1, wherein: A flow guide tube (804) is installed on one side of the receiving tube (801); a connecting tube (805) is installed on the side of the inner cavity of the flow guide tube (804) away from the receiving tube (801); and a thread is provided on the outer wall of the connecting tube (805); The inner cavity of the transfer sleeve (7) is provided with threads, and the transfer sleeve (7) and the connecting pipe (805) are connected to each other via the threads; The infusion tube (10) is arranged at one end of the receiving tube (801), and the flow guide tube (804) and the infusion tube (10) are respectively arranged at two ends of the receiving tube (801).

3. A nerve block anesthetic injection device according to claim 2, characterized in that: The flow guide tube (804) is connected to the inner cavity of the storage tube (801); a rubber ventilation tube (803) is installed on a side of the inner cavity of the storage tube (801) close to the flow guide tube (804); the flow guide tube (804) is located inside the rubber ventilation tube (803); and one end of the rubber ventilation tube (803) away from the flow guide tube (804) is connected to piston 2 (806).

4. The nerve block anesthetic injection device according to claim 1, wherein: The teeth on the plastic limit rack (903) are designed to be inclined, and the angle between the inclined direction of the teeth and the flow direction of the injection liquid is an acute angle. One side of the resistance block (905) is designed to be inclined, and the inclined surface of the resistance block (905) fits with the teeth of the plastic limit rack (903).

5. The nerve block anesthetic injection device according to claim 1, characterized in that: The pressurizing assembly (3) includes a sliding plate (301) and a first spring (302). The bottom corners of the inner cavity of the mounting frame (2) are respectively provided with the first spring (302). A sliding plate (301) is jointly connected between the tops of the four first springs (302). Positioning columns (4) are respectively installed on the inner walls of the left and right sides of the mounting frame (2). The sliding plate (301) is slidably arranged between the two positioning columns (4). Limiting frames (5) are respectively installed above the outer walls of the two positioning columns (4).

6. The nerve block anesthetic injection device according to claim 5, characterized in that: A pressing rod (304) is installed on the bottom surface of the sliding plate (301). An installation cylinder (303) is installed on the bottom surface of the inner cavity of the mounting frame (2). A sliding block (308) is slidably installed in the installation cylinder (303). A first piston (309) is installed on the bottom surface of the sliding block (308). The end face of the sliding block (308) is connected to the bottom surface of the pressing rod (304).

7. The nerve block anesthetic injection device according to claim 6, wherein: An air inlet pipe (305) and an air outlet pipe (306) are respectively arranged on the side wall of the installation cylinder (303); The air inlet pipe (305) communicates with the inner cavity of the installation cylinder (303). A second connecting ring (315) is installed on the inner wall of the air inlet pipe (305). A second spring (310) is installed on the side of the second connecting ring (315) close to the inner cavity of the installation cylinder (303). A first sealing bead (311) is installed on the side of the second spring (310) away from the second connecting ring (315). The first sealing bead (311) is located between the installation cylinder (303) and the air inlet pipe (305), and the first sealing bead (311) blocks the air inlet pipe (305); A first connecting ring (312) is installed on the side of the inner cavity of the air outlet pipe (306) away from the inner cavity of the sliding plate (301). A fifth spring (313) is installed on the side of the first connecting ring (312) away from the inner cavity of the sliding plate (301). A second sealing bead (314) is installed on the side of the fifth spring (313) away from the inner cavity of the installation cylinder (303). The second sealing bead (314) blocks the air outlet pipe (306).

8. A nerve block anesthetic injection device according to claim 7, characterized in that: A connecting sleeve (307) is installed on the outer wall of the air outlet pipe (306). The cross section of the connecting sleeve (307) is in an "inverted U" shape. The second sealing bead (314) is located in the inner cavity of the connecting sleeve (307). A transmission pipe (6) is installed in the inner cavity of the connecting sleeve (307).

9. A nerve block anesthetic injection device according to claim 1, characterized in that: A chute (807) is formed on the side wall of the storage pipe (801). A through groove (808) is formed on the bottom surface of the inner cavity of the chute (807). Mounting rods (809) are symmetrically arranged between the inner walls of the chute (807). An arc-shaped block (811) is slidably arranged between the two mounting rods (809). A fourth spring (810) is installed on one side of the arc-shaped block (811). One end of the fourth spring (810) away from the arc-shaped block (811) is connected to the inner side wall of the chute (807).

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