Local anesthesia equipment with adjustable dosage

Abstract

The invention relates to the technical field of anesthesia equipment, and particularly discloses dosage-adjustable local anesthesia equipment, which comprises an anesthesia needle cylinder; an adjusting mechanism is installed at one end of the anesthetic needle cylinder, a plurality of scale marks are arranged on the outer wall of the anesthetic needle cylinder, a limiting mechanism is installed on one side of the outer surface of the anesthetic needle cylinder, and a disinfection mechanism is installed on the limiting mechanism; the adjusting mechanism comprises an adjusting rod, a positioning plate, a piston, a tooth groove, an adjusting box and a driver. The positioning plate is installed at one end of the adjusting rod. The driving of the driver is matched with the meshing transmission between the adjacent transmission gears, and the adjusting rod stably pushes the piston to move through the meshing transmission between the adjusting gear and the tooth groove, so that the conveying speed and dosage of anesthetic can be electrically controlled, the stability and safety of the anesthetic effect are ensured, deviation caused by manual operation is avoided, and the working efficiency is improved. And the accuracy of dose control is improved, so that the anesthesia effect is optimized.

Description

Technical Field

[0001] The present invention belongs to the technical field of anesthesia equipment, and particularly relates to a local anesthesia equipment with adjustable dosage. Background Art

[0002] Local anesthesia, also known as regional anesthesia, is an anesthetic method carried out under the condition that the patient remains conscious. It involves precisely applying local anesthetic drugs to specific areas of the body to temporarily block the sensory nerve conduction function in that area. During this process, the motor nerve conduction function of the patient may remain intact or be blocked to varying degrees. This anesthetic method allows the patient to remain awake during the operation or treatment while ensuring that the sensation in the treated area is effectively inhibited, thereby reducing pain and discomfort.

[0003] In the Chinese patent with the publication number CN215461189U, a local anesthesia equipment for the anesthesiology department is mentioned. By installing a lead screw, since precise quantification is required when injecting anesthetic drugs into patients, and the syringe is often manually injected by doctors, it is easy to inject an excessive amount and cause waste. The user can manually rotate the lead screw to adjust the distance between the thread and the device body, so that the limit support block will support the left side of the push plate, and the limit support block will limit and support the moving range of the push plate;

[0004] However, when using this anesthesia equipment, the piston is controlled by manually pushing the push plate. However, manual operation is prone to deviation, resulting in differences in the measured dosage of anesthetic drugs. This difference leads to a lack of precision in the dosage control of anesthetic agents, which in turn easily causes problems such as drug waste or insufficient dosage, ultimately affecting the anesthesia effect. In addition, many ultrasound-guided nerve block anesthesias need to be completed by an anesthesiologist alone. The doctor needs to hold the nerve stimulation needle while performing ultrasound operations, so it is impossible to take into account pushing the drug for injection. Summary of the Invention

[0005] The purpose of the present invention is to provide a local anesthesia equipment with adjustable dosage, which has the function of precisely adjusting the dosage of anesthetic drugs to solve the problem of inaccurate injection dosage of anesthetic drugs.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A local anesthesia equipment with adjustable dosage, comprising:

[0008] Anesthesia syringe;

[0009] One end of the anesthesia syringe is equipped with an adjustment mechanism, the outer wall of the anesthesia syringe is provided with multiple scale lines, one side of the outer surface of the anesthesia syringe is equipped with a limit mechanism, and a disinfection mechanism is installed on the limit mechanism;

[0010] The adjusting mechanism includes an adjusting rod, a positioning plate, a piston, tooth grooves, an adjusting box and a driver. The positioning plate is installed at one end of the adjusting rod, the piston is installed at the other end of the adjusting rod, several tooth grooves are provided, and the several tooth grooves are respectively opened at the top and bottom ends of the adjusting rod. The adjusting box is installed on the outer surface of the adjusting rod, and the other end of the adjusting box is installed at one end of the anesthesia syringe. The driver is installed on the upper part of the outer wall of the adjusting box.

[0011] Preferably, an anesthesia needle head is installed at the other end of the anesthesia syringe. Multiple depth marks are provided on the outer surface of the anesthesia needle head. Two fixing rings are installed on the other side of the outer surface of the anesthesia syringe. A control button is installed at the lower part of the outer wall of the adjusting mechanism.

[0012] Preferably, through holes are opened at both ends of the adjusting box. Two transmission shafts are jointly installed between the inner walls on both sides of the adjusting box through bearings. Adjusting gears are installed in the middle of the outer surfaces of the two transmission shafts. Transmission gears are installed on both sides of the outer surfaces of the two transmission shafts.

[0013] Preferably, the aperture of the through hole is larger than the diameter of the adjusting rod. The adjusting gear meshes with the corresponding tooth groove. The adjacent two transmission gears mesh with each other. The driver is electrically connected to the control button.

[0014] Preferably, the limiting mechanism includes a limiting plate, a mounting hole, rubber blocks, fixing rods and an adjusting mechanism. The mounting hole is opened in the middle of one end of the limiting plate. Multiple rubber blocks are provided, and the multiple rubber blocks are all installed at the other end of the limiting plate. Three fixing rods are provided, and the three fixing rods are all installed at the edge of one end of the limiting plate. The adjusting mechanism is installed between the other ends of the three fixing rods, and the adjusting mechanism is installed on the outer surface of the anesthesia syringe.

[0015] Preferably, the adjusting mechanism includes an adjusting screw, an adjusting handle, fixing blocks and an adjusting ring. The adjusting handle is installed at one end of the adjusting screw. Two fixing blocks are provided. The two fixing blocks are respectively installed on both sides of the outer surface of the adjusting screw through bearings, and the bottom ends of the two fixing blocks are both installed at the top end of the anesthesia syringe. The adjusting ring is installed in the middle of the outer surface of the adjusting screw.

[0016] Preferably, an integrated protrusion is provided in the middle of the top end of the adjusting ring, and the inner diameter of the adjusting ring is the same as the diameter of the anesthesia syringe.

[0017] Preferably, the disinfection mechanism includes a storage tank, a liquid inlet pipe, a water pump, an infusion pipe, a shunt pipe, and a disinfection cotton. The storage tank is installed on the outer wall of the anesthesia syringe. The liquid inlet pipe is installed in the middle of the top of the storage tank. The water pump is installed in the middle of the other end of the storage tank. The infusion pipe is installed at the other end of the water pump, and the other end of the infusion pipe penetrates through the outer wall of the limiting plate. The shunt pipe is installed at the other end of the infusion pipe, and the outer surface of the shunt pipe is installed on the inner wall of the installation hole. The disinfection cotton is installed inside the shunt pipe.

[0018] Preferably, the water pump is electrically connected to the control button. The outer surface of the infusion pipe is arranged in a folding structure. The shunt pipe is arranged in an annular structure. The inner wall of the disinfection cotton contacts the outer surface of the anesthesia needle tip.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1) An adjustment mechanism is provided at one end of the anesthesia syringe of the present invention. Through the drive of the driver and the meshing transmission between adjacent transmission gears, and through the meshing transmission between the adjustment gear and the tooth groove, the adjustment rod stably pushes the piston to move, which can electrically control the delivery speed and dosage of the anesthetic drug, ensure the stability and safety of the anesthetic effect, avoid the deviation caused by manual operation, improve the accuracy of dosage control, and thus optimize the anesthetic effect.

[0021] (2) A limiting mechanism is provided on the outer surface of the anesthesia syringe of the present invention. By rotating the adjusting screw rod to drive the adjusting ring to move, and then driving the fixing rod to drive the limiting plate to move, the position of the limiting plate on the anesthesia needle tip can be flexibly adjusted, effectively limiting the insertion depth of the anesthesia needle tip. This design not only improves the stability of injection, reduces the risk of local anesthesia, but also ensures the uniformity and duration of the anesthetic effect.

[0022] (3) A disinfection mechanism is provided on the outer surface of the anesthesia syringe of the present invention. The disinfectant liquid is pumped by the water pump, then the disinfectant liquid is input into the shunt pipe through the infusion pipe, and then the disinfection cotton is driven to move to wipe the anesthesia needle tip. When the disinfection cotton moves, the folding pipeline on the infusion pipe can stretch and expand to adapt to the movement of the disinfection cotton, so as to comprehensively disinfect and sterilize the anesthesia needle tip, reduce the infection risk caused by the contamination of the anesthesia needle tip, and protect the health and safety of patients. Description of the Drawings

[0023] Figure 1 is a three-dimensional view of the present invention;

[0024] Figure 2 is a three-dimensional view of the adjustment mechanism of the present invention;

[0025] Figure 3 is a cross-sectional view of the adjustment box of the present invention;

[0026] Figure 4 Stereogram of the transmission component of the present invention;

[0027] Figure 5 For the present invention Figure 1 Enlarged view of A in the present invention;

[0028] Figure 6 Stereogram of the limit mechanism of the present invention;

[0029] Figure 7 Stereogram of the adjustment mechanism of the present invention;

[0030] Figure 8 Stereogram of the disinfection mechanism of the present invention;

[0031] In the figure: 1, anesthesia syringe; 2, adjustment mechanism; 3, scale line; 4, limit mechanism; 5, disinfection mechanism; 6, anesthesia needle head; 7, depth mark; 8, fixing ring; 9, control button;

[0032] 21, adjustment rod; 22, positioning plate; 23, piston; 24, tooth groove; 25, adjustment box; 26, driver; 27, through hole; 28, transmission shaft; 29, adjustment gear; 210, transmission gear;

[0033] 41, limit plate; 42, mounting hole; 43, rubber block; 44, fixing rod; 45, adjustment mechanism;

[0034] 451, adjustment screw; 452, adjustment handle; 453, fixing block; 454, adjustment ring;

[0035] 51, storage box; 52, liquid inlet pipe; 53, water pump; 54, infusion pipe; 55, shunt pipe; 56, disinfection cotton. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1:

[0038] Please refer to Figures 1 to 8 As shown, a local anesthesia device with adjustable dosage includes:

[0039] Anesthesia syringe 1;

[0040] One end of the anesthesia syringe 1 is equipped with an adjustment mechanism 2. Multiple scale lines 3 are provided on the outer wall of the anesthesia syringe 1. A limit mechanism 4 is installed on one side of the outer surface of the anesthesia syringe 1, and a disinfection mechanism 5 is installed on the limit mechanism 4;

[0041] The adjustment mechanism 2 includes an adjustment rod 21, a positioning plate 22, a piston 23, tooth grooves 24, an adjustment box 25, and a driver 26. The positioning plate 22 is installed at one end of the adjustment rod 21, the piston 23 is installed at the other end of the adjustment rod 21. A number of tooth grooves 24 are provided, and the number of tooth grooves 24 are respectively opened at the top and bottom of the adjustment rod 21. The adjustment box 25 is installed on the outer surface of the adjustment rod 21, and the other end of the adjustment box 25 is installed at one end of the anesthesia syringe 1. The driver 26 is installed on the upper part of the outer wall of the adjustment box 25.

[0042] It can be seen from Figures 1 to 5 that the other end of the anesthesia syringe 1 is equipped with an anesthesia needle head 6. Multiple depth marks 7 are provided on the outer surface of the anesthesia needle head 6. Two fixing rings 8 are installed on the other side of the outer surface of the anesthesia syringe 1. A control button 9 is installed on the lower part of the outer wall of the adjustment mechanism 2;

[0043] Through holes 27 are opened at both ends of the adjustment box 25. Two transmission shafts 28 are jointly installed between the inner walls on both sides of the adjustment box 25 through bearings. Adjustment gears 29 are installed in the middle of the outer surfaces of the two transmission shafts 28, and transmission gears 210 are installed on both sides of the outer surfaces of the two transmission shafts 28.

[0044] As can be seen from the above, when the local anesthesia of a patient is required using this anesthesia device, first, the driver 26 is activated by the control button 9. Subsequently, the meshing transmission between two adjacent transmission gears 210 drives the two adjusting gears 29 on the two transmission shafts 28 to rotate in opposite directions. These two adjusting gears 29 are respectively engaged with corresponding multiple tooth grooves 24, thereby stably pushing the adjusting rod 21 and the piston 23 to move, and pushing the anesthetic drug in the anesthetic syringe 1 into the anesthetic needle 6 to achieve the injection of the anesthetic drug. By adopting this electric control method, an injection volume of 20 ml or 50 ml can be accurately achieved, and it is convenient to accurately set the single dose or multiple identical doses in advance. This anesthesia device has the function of adjustable anesthetic drug dose, which can not only accurately control the delivery speed and dose of the drug, but also effectively avoid the deviation that may be caused by manual operation, thus reducing the problems of drug waste or insufficient dose. Therefore, doctors can flexibly control the dose of the anesthetic drug by adjusting the settings according to the specific needs of the operation or treatment, significantly improving the accuracy of dose control, further optimizing the anesthesia effect, ensuring the stability of the anesthesia effect and the safety of the patient. In addition, the anesthetic needle 6 can be detached from the anesthetic syringe 1. Doctors can install a nerve block puncture needle on the anesthetic syringe 1, thereby replacing the anesthetic needle 6 with a nerve block puncture needle. Allowing doctors to only operate the control button 9 on the basis of presetting a single dose or multiple identical doses, they can simultaneously take into account the monitoring of the ultrasound image and the accurate injection of the anesthetic drug, truly realizing ultrasound-guided nerve block anesthesia under single-person operation, without having to worry about the problem that doctors need to be distracted to hold a nerve stimulation needle for other operations while performing ultrasound operations.

[0045] Specifically, referring to Figures 1 to 5 As shown, the aperture of the through hole 27 is larger than the diameter of the adjusting rod 21. The adjusting gear 29 is engaged with the corresponding tooth groove 24, and two adjacent transmission gears 210 are engaged with each other. The driver 26 is electrically connected to the control button 9.

[0046] As can be seen from the above, the through hole 27 provides sufficient moving space for the adjusting rod 21 for subsequent adjustment operations, can transmit the rotational movement of the adjusting gear 29 to the adjusting rod 21 to move the position of the adjusting rod 21. The meshing of the transmission gear 210 is conducive to the stable movement of the adjusting rod 21, allowing the user to control the working state of the driver 26 by operating the control button 9 to achieve precise adjustment of the anesthetic drug dose, and the control button 9 can also be installed on the ultrasound probe in the form of adhesion or snap.

[0047] Embodiment 2:

[0048] Referring to Figure 6 and Figure 7As shown in the figure, the limit mechanism 4 includes a limit plate 41, mounting holes 42, rubber blocks 43, fixed rods 44 and an adjustment mechanism 45. The mounting holes 42 are opened in the middle of one end of the limit plate 41. There are multiple rubber blocks 43, and the multiple rubber blocks 43 are all installed at the other end of the limit plate 41. There are three fixed rods 44, and the three fixed rods 44 are all installed at the edge of one end of the limit plate 41. The adjustment mechanism 45 is installed between the other ends of the three fixed rods 44, and the adjustment mechanism 45 is installed on the outer surface of the anesthesia syringe 1;

[0049] The adjustment mechanism 45 includes an adjustment screw 451, an adjustment handle 452, fixed blocks 453 and an adjustment ring 454. The adjustment handle 452 is installed at one end of the adjustment screw 451. There are two fixed blocks 453. The two fixed blocks 453 are respectively installed on both sides of the outer surface of the adjustment screw 451 through bearings, and the bottom ends of the two fixed blocks 453 are both installed at the top end of the anesthesia syringe 1. The adjustment ring 454 is installed in the middle of the outer surface of the adjustment screw 451.

[0050] As can be seen from the above, by holding the adjustment handle 452, the medical staff can drive the adjustment screw 451 to rotate. The rotation of the adjustment screw 451 can drive the adjustment ring 454 to move, and the movement of the adjustment ring 454 is limited by the anesthesia syringe 1. This action enables the three fixed rods 44 to simultaneously and stably push the limit plate 41 to move, so that the position of the limit plate 41 on the anesthesia needle 6 can be flexibly adjusted according to actual needs. The limiting of the limit plate 41 and the anti-slip function of the rubber block 43 can effectively limit the insertion depth of the anesthesia needle 6. This design solves the problem that due to different injection sites, different injection depths are required, and it is not easy for medical staff to control the injection depth during manual injection, thus affecting the local anesthesia injection effect. It not only improves the stability of injection, reduces the risk of local anesthesia, but also ensures the uniformity and duration of the anesthesia effect.

[0051] Preferably, referring to Figure 6 and Figure 7 As shown in the figure, an integrated protrusion is provided in the middle of the top end of the adjustment ring 454, and the inner diameter of the adjustment ring 454 is the same as the diameter of the anesthesia syringe 1.

[0052] As can be seen from the above, the integrated protrusion facilitates the adjustment screw 451 to drive the adjustment ring 454 to move, so that the adjustment ring 454 can be sleeved on the anesthesia syringe 1 to play a limiting role.

[0053] Embodiment 3:

[0054] Referring to Figure 8As shown in the figure, the disinfection mechanism 5 includes a storage tank 51, a liquid inlet pipe 52, a water pump 53, an infusion pipe 54, a shunt pipe 55 and a disinfection cotton 56. The storage tank 51 is installed on the outer wall of the anesthesia syringe 1. The liquid inlet pipe 52 is installed in the middle of the top of the storage tank 51. The water pump 53 is installed in the middle of the other end of the storage tank 51. The infusion pipe 54 is installed at the other end of the water pump 53, and the other end of the infusion pipe 54 penetrates the outer wall of the limiting plate 41. The shunt pipe 55 is installed at the other end of the infusion pipe 54, and the outer surface of the shunt pipe 55 is installed on the inner wall of the installation hole 42. The disinfection cotton 56 is installed inside the shunt pipe 55.

[0055] As can be seen from the above, when it is necessary to disinfect the anesthesia needle 6, the medical staff can start the water pump 53 through the control button 9. The water pump 53 pumps out the disinfectant in the storage tank 51, and then inputs the disinfectant into the shunt pipe 55 through the infusion pipe 54, so that the annular shunt pipe 55 can evenly input the disinfectant into the disinfection cotton 56. Subsequently, through the limiting mechanism 4, the position of the disinfection cotton 56 can be moved to wipe the outer surface of the anesthesia needle 6 to complete the disinfection process. During the movement of the disinfection cotton 56, the folding pipe on the infusion pipe 54 can flexibly stretch and expand to adapt to the movement of the disinfection cotton 56. This design not only ensures the continuous and stable transmission of the disinfectant, but also realizes the comprehensive disinfection and sterilization of the anesthesia needle 6, thereby reducing the infection risk caused by the contamination of the anesthesia needle 6, ensuring aseptic operation, and protecting the health and safety of patients.

[0056] Preferably, referring to Figure 8 As shown in the figure, the water pump 53 is electrically connected to the control button 9. The outer surface of the infusion pipe 54 is set as a folding structure. The shunt pipe 55 is set as an annular structure. The inner wall of the disinfection cotton 56 contacts the outer surface of the anesthesia needle 6.

[0057] As can be seen from the above, it is allowed for the user to control the working state of the water pump 53 by operating the control button 9. The folding structure is convenient for adjusting the length of the infusion pipe 54. The annular shunt pipe 55 can evenly distribute the disinfectant, which is convenient for evenly applying the disinfectant on the outer surface of the anesthesia needle 6. By wiping or wrapping the anesthesia needle 6 with the disinfection cotton 56, the purpose of sterilization and disinfection is achieved.

[0058] Application example:

[0059] This design has a wide range of applications and is crucial in the medical field, especially applicable to surgical or treatment environments that require precise control of anesthetic drug dosage. Whether it is the operating room, outpatient treatment room, or emergency room, this design can play its unique role. In complex surgeries with extremely high requirements for anesthesia control, such as delicate neurosurgical operations and critical cardiac surgeries, this design ensures the accuracy of anesthetic dosage through its precise adjustment mechanism, providing a solid guarantee for the smooth progress of the surgery. At the same time, in small surgeries or pain treatments in the outpatient clinic, such as common procedures like tooth extraction and wound suturing, this design also demonstrates its efficiency and convenience, making the anesthesia process safer and more reliable;

[0060] The core of this design lies in its innovative adjustment mechanism 2, which can precisely adjust the output of anesthetic drugs to ensure a perfect match between the anesthetic dosage and the specific requirements of the surgery or treatment. This design not only avoids potential risks such as respiratory depression and heart rate decline caused by excessive anesthetic dosage, but also effectively prevents anesthesia failure due to insufficient dosage, thus ensuring the accuracy and success rate of the surgery or treatment. In addition, the easy operation and stability of the adjustment mechanism 2 also greatly improve the adaptability and flexibility during the surgery or treatment process. In addition to precise anesthesia control, this design is also equipped with a limit mechanism 4, which restricts the position of the anesthetic needle 6 through a clever mechanical structure, thereby effectively controlling the injection depth of the anesthetic drug. This design not only improves the stability during injection, but also greatly reduces the risk of complications caused by improper injection depth, providing additional protection for the safety of patients. In addition, this design is also equipped with a disinfection mechanism 5, which uses highly efficient disinfectant to thoroughly sterilize the anesthetic needle 6, ensuring the realization of a sterile operation environment. This design not only greatly reduces the risk of infection, but also improves the safety and reliability of the overall treatment. At the same time, the convenience and efficiency of the disinfection mechanism 5 also make the disinfection work during the surgery or treatment process easier and simpler. In summary, this design provides a comprehensive, precise, and safe anesthesia solution for the medical surgery or treatment environment with its unique adjustment mechanism 2, limit mechanism 4, and disinfection mechanism 5. Whether in a complex surgical environment or in daily outpatient treatment, this design can exert its excellent performance and advantages to escort the health and safety of patients.

[0061] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dose-adjustable local anesthesia device, characterized in that: include: Anesthesia syringe (1); An adjustment mechanism (2) is installed at one end of the anesthesia syringe (1), a plurality of scale lines (3) are provided on the outer wall of the anesthesia syringe (1), a limiting mechanism (4) is installed on one side of the outer surface of the anesthesia syringe (1), and a disinfection mechanism (5) is installed on the limiting mechanism (4); The regulating mechanism (2) comprises a regulating rod (21), a positioning plate (22), a piston (23), a tooth groove (24), a regulating box (25) and a driver (26); the positioning plate (22) is mounted on one end of the regulating rod (21); the piston (23) is mounted on the other end of the regulating rod (21); a plurality of tooth grooves (24) are provided, and the plurality of tooth grooves (24) are respectively arranged at the top end and the bottom end of the regulating rod (21); the regulating box (25) is mounted on the outer surface of the regulating rod (21); the other end of the regulating box (25) is mounted on one end of the anesthesia syringe (1); and the driver (26) is mounted on the upper part of the outer wall of the regulating box (25).

2. A dose-adjustable local anesthesia device according to claim 1, characterized in that: An anesthetic needle (6) is installed at the other end of the anesthetic syringe (1), and a plurality of depth marks (7) are provided on the outer surface of the anesthetic needle (6). Two fixing rings (8) are installed on the other side of the outer surface of the anesthetic syringe (1), and a control button (9) is installed at the lower part of the outer wall of the adjustment mechanism (2).

3. A dose-adjustable local anesthesia device according to claim 2, characterized in that: Through holes (27) are provided at both ends of the adjustment box (25); two transmission shafts (28) are installed between the inner walls of both sides of the adjustment box (25) via bearings; adjustment gears (29) are installed in the middle of the outer surfaces of the two transmission shafts (28); and transmission gears (210) are installed on both sides of the outer surfaces of the two transmission shafts (28).

4. A dose-adjustable local anesthesia device according to claim 3, characterized in that: The aperture of the through hole (27) is larger than the diameter of the adjusting rod (21), the adjusting gear (29) is meshed with the corresponding tooth groove (24), two adjacent transmission gears (210) are meshed with each other, and the driver (26) is electrically connected to the control button (9).

5. A dose-adjustable local anesthesia device according to claim 1, characterized in that: The limiting mechanism (4) comprises a limiting plate (41), a mounting hole (42), a rubber block (43), a fixing rod (44) and an adjustment mechanism (45); the mounting hole (42) is opened in the middle of one end of the limiting plate (41); a plurality of rubber blocks (43) are provided, and the plurality of rubber blocks (43) are all installed on the other end of the limiting plate (41); three fixing rods (44) are provided, and the three fixing rods (44) are all installed on the edge of one end of the limiting plate (41); the adjustment mechanism (45) is installed between the other ends of the three fixing rods (44), and the adjustment mechanism (45) is installed on the outer surface of the anesthesia syringe (1).

6. A dose-adjustable local anesthesia device according to claim 5, characterized in that: The adjustment mechanism (45) comprises an adjustment screw (451), an adjustment handle (452), a fixing block (453) and an adjustment ring (454); the adjustment handle (452) is mounted on one end of the adjustment screw (451); two fixing blocks (453) are provided; the two fixing blocks (453) are respectively mounted on both sides of the outer surface of the adjustment screw (451) through bearings, and the bottom ends of the two fixing blocks (453) are both mounted on the top end of the anesthesia syringe (1); and the adjustment ring (454) is mounted on the middle part of the outer surface of the adjustment screw (451).

7. A dose-adjustable local anesthesia device according to claim 6, characterized in that: An integrated protrusion is provided at the middle of the top end of the adjustment ring (454), and the inner diameter of the adjustment ring (454) is consistent with the diameter of the anesthesia syringe (1).

8. The dose-adjustable local anesthesia device according to claim 1, characterized in that: The disinfection mechanism (5) comprises a storage box (51), a liquid inlet pipe (52), a water pump (53), an infusion pipe (54), a shunt pipe (55) and disinfection cotton (56). The storage box (51) is mounted on the outer wall of the anesthesia syringe (1), the liquid inlet pipe (52) is mounted in the middle of the top end of the storage box (51), the water pump (53) is mounted in the middle of the other end of the storage box (51), the infusion pipe (54) is mounted on the other end of the water pump (53), and the other end of the infusion pipe (54) passes through the outer wall of the limit plate (41), the shunt pipe (55) is mounted on the other end of the infusion pipe (54), and the outer surface of the shunt pipe (55) is mounted on the inner wall of the mounting hole (42), and the disinfection cotton (56) is mounted on the inner side of the shunt pipe (55).

9. A dose-adjustable local anesthesia device according to claim 8, characterized in that: The water pump (53) is electrically connected to the control button (9), the outer surface of the infusion tube (54) is configured as a folding structure, the shunt tube (55) is configured as a ring structure, and the inner wall of the disinfection cotton (56) is in contact with the outer surface of the anesthesia needle (6).

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