An anesthesia booster control method and an anesthesia booster

Abstract

The present invention relates to the field of dental medical devices. Specifically, it relates to an anesthesia booster control method and an anesthesia booster. An anesthesia booster control method, the anesthesia booster includes a motor, a push rod, a pressure sensor and a needle. The motor is used to drive the push rod to move, so that when the needle is inserted into oral tissue, anesthetic in an anesthetic cartridge installed on the anesthesia booster is pushed through the needle into the oral tissue. Obtain the detection signal output by the pressure sensor when the needle is inserted into oral tissue to obtain the resistance data when the needle is inserted into oral tissue; obtain the working parameters of the motor; substitute the resistance data and the working parameters into a preset rule to obtain the preset rotation speed of the motor; control the motor to rotate at the preset rotation speed. This anesthesia booster control method can improve the injection efficiency, improve the accuracy of the injection volume, and reduce the pain of the patient.

Description

Technical Field

[0001] The present invention relates to the field of dental medical devices, and more particularly, to a control method for an anesthetic injector and an anesthetic injector. Background Art

[0002] In various dental surgeries, local anesthesia or nerve block anesthesia is often required to relieve the pain of patients during the surgery and improve the success rate of the surgery.

[0003] Currently, the common oral anesthetic injection method used by doctors is manual injection. The anesthetic is placed in a manual syringe, and then the drug is injected into the oral tissue of the patient by pushing hard with the hand. Doctors often need to rely on experience to adjust the injection speed, injection pressure, and injection dosage for different patients and different injection tissues. This is difficult for young new doctors to control. Moreover, in order to reduce the dosage of anesthetic, periodontal ligament anesthesia needs to be performed on a single tooth, which requires a large injection pressure and is difficult to complete manually. During the process of drug injection using an anesthetic injector, it is necessary to calculate the pressure borne by the anesthetic injector based on the current of the motor and judge the tissue being injected. This method has low accuracy, is prone to errors, and the injection steps are cumbersome, resulting in low injection efficiency and increasing the pain of patients. Summary of the Invention

[0004] The objectives of the present invention include providing a control method for an anesthetic injector and an anesthetic injector, which can improve the injection efficiency, improve the accuracy of the injection volume, and relieve the pain of patients.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a control method for an anesthetic injector. The anesthetic injector includes a motor, a push rod, a pressure sensor, and a needle. The motor is used to drive the push rod to move, so that when the needle is inserted into the oral tissue, the anesthetic in the anesthetic cartridge of the anesthetic injector is pushed through the needle into the oral tissue. The control method for the anesthetic injector includes:

[0007] Obtain the detection signal output by the pressure sensor when the needle is inserted into the oral tissue to obtain the resistance data when the needle is inserted into the oral tissue;

[0008] Obtain the operating parameters of the motor;

[0009] Substitute the resistance data and the operating parameters into a preset rule to obtain the preset rotation speed of the motor;

[0010] Control the motor to rotate at the preset rotation speed.

[0011] In an alternative embodiment, the operating parameter is the operating current of the motor.

[0012] In an alternative embodiment, after the step of controlling the motor to rotate at a preset speed, the anesthesia booster control method further includes:

[0013] Calculating the rotation time of the motor rotating at the preset speed;

[0014] Obtaining the position signal for detecting the position of the push rod output by the position sensor to obtain the actual stroke of the push rod;

[0015] Obtaining the actual speed of the motor based on the rotation time and the actual stroke, comparing the preset speed with the actual speed, and if the preset speed is inconsistent with the actual speed, adjusting the rotation speed of the motor until the preset speed is consistent with the actual speed.

[0016] In an alternative embodiment, after the step of controlling the motor to rotate at a preset speed, the anesthesia booster control method further includes:

[0017] Obtaining the position signal for detecting the position of the push rod output by the position sensor to obtain the actual stroke of the push rod;

[0018] Obtaining the injection amount of the anesthetic and the remaining amount of the anesthetic in the anesthetic cartridge according to the actual stroke of the push rod;

[0019] When the remaining amount of the anesthetic is less than the preset remaining amount, sending a signal.

[0020] In a second aspect, the present invention provides an anesthesia booster, which includes a housing, a motor, a propulsion structure, a pressure sensor, and a controller for executing the above-mentioned anesthesia booster control method;

[0021] Both the motor and the propulsion structure are accommodated in the housing, and the housing has an installation cavity for installing the anesthetic cartridge and a needle hole communicating with the installation cavity and for installing the needle;

[0022] The motor is connected to the housing. The propulsion structure includes a nut, a lead screw, and a push rod accommodated in the housing. The lead screw is connected to the motor, and the nut is engaged with the lead screw and connected to the push rod;

[0023] The motor is used to drive the lead screw to rotate and drive the nut and the push rod to slide relative to the installation cavity to abut against the anesthetic cartridge in the installation cavity and push the anesthetic in the anesthetic cartridge;

[0024] The pressure sensor is used to detect the resistance data when the needle is inserted into the oral tissue;

[0025] The controller is electrically connected to the sensor and the motor.

[0026] In an alternative embodiment, the pressure sensor is located at the connection between the motor and the propulsion structure.

[0027] In an alternative embodiment, the pressure sensor is located at the connection between the push rod and the nut or at the connection between the needle and the anesthetic cartridge.

[0028] In an alternative embodiment, the anesthesia booster further includes a guide block connected to the nut and a guide groove formed in the inner wall of the housing, the extending direction of the guide groove coincides with the axial direction of the lead screw; the guide block is engaged with the guide groove.

[0029] In an alternative embodiment, an end of the push rod for abutting against the anesthetic cartridge is provided with an annular sealing ring that fits against the inner wall of the cartridge.

[0030] In an alternative embodiment, the anesthesia booster further includes a position sensor, the position sensor is electrically connected to the controller, the position sensor is connected to the housing, and is configured to detect the position of the push rod in the housing.

[0031] The beneficial effects of the embodiments of the present invention include:

[0032] The anesthesia booster control method obtains the detection signal output by the pressure sensor when the needle is inserted into the oral tissue, and obtains the resistance data when the needle is inserted into the oral tissue; obtains the operating parameters of the motor; substitutes the resistance data and the operating parameters into a preset rule to obtain the preset rotational speed of the motor; controls the motor to rotate at the preset rotational speed. Thus, during use, the rotational speed of the motor can be automatically adjusted according to the oral tissue into which the needle is inserted, and thus the injection speed, injection pressure, and injection dosage of the anesthesia booster can be adjusted according to different oral tissues, thereby improving the injection efficiency, reducing the injection error, and reducing the pain of the patient during the injection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a step diagram of the anesthesia booster control method in the embodiments of the present invention;

[0035] Figure 2 It is a schematic structural diagram of the anesthesia booster in the embodiments of the present invention;

[0036] Figure 3 It is an exploded schematic diagram of the anesthesia booster in the embodiments of the present invention;

[0037] Figure 4 It is a schematic structural diagram of the propulsion structure in the embodiments of the present invention;

[0038] Figure 5 It is a cross-sectional view of the propulsion structure in the embodiments of the present invention.

[0039] Icons: 10 - needle; 20 - anesthetic cartridge; 200 - anesthetic booster; 210 - housing; 220 - motor; 230 - propulsion structure; 240 - pressure sensor; 250 - controller; 231 - nut; 232 - lead screw; 233 - push rod; 251 - guide block; 252 - guide groove; 234 - annular sealing ring; 260 - position sensor; 235 - mounting hole. Detailed implementation manners

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0043] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the invention is usually placed during use. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0044] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0045] It should be noted that the features in the embodiments of the present invention can be combined with each other without conflict.

[0046] Please refer to Figures 1-4 , Figure 1 which is the step diagram of the control method of the anesthetic booster in the embodiments of the present invention. Figures 2-4It is a schematic structural diagram of an anesthesia booster in an embodiment of the present invention. This embodiment provides a control method for an anesthesia booster. The anesthesia booster 200 includes a motor 220, a push rod 233, a pressure sensor 240, and a needle 10. The motor 220 is used to drive the push rod 233 to move, so that when the needle 10 is inserted into oral tissue, the anesthetic in the anesthetic cartridge 20 installed on the anesthesia booster 200 is pushed through the needle 10 into the oral tissue. The control method for the anesthesia booster includes the following steps:

[0047] S1: Obtain the detection signal output by the pressure sensor 240 when the needle 10 is inserted into oral tissue, and obtain the resistance data when the needle 10 is inserted into oral tissue;

[0048] S2: Obtain the working parameters of the motor 220;

[0049] S3: Substitute the resistance data and the working parameters into a preset rule to obtain the preset rotation speed of the motor 220;

[0050] S4: Control the motor 220 to rotate at the preset rotation speed.

[0051] The principle of this control method for the anesthesia booster is:

[0052] The purpose of this control method for the anesthesia booster is to adjust the injection speed, injection pressure, and injection dosage of the anesthesia booster 200 according to the different oral tissues into which the needle 10 is inserted, so that during the use of the anesthesia booster 200, the injection speed, injection pressure, and injection dosage can be automatically adjusted according to the different oral tissues, improving the working efficiency of the anesthesia booster 200 and reducing the pain of the patient.

[0053] Specifically, this control method for the anesthesia booster includes the following steps:

[0054] By obtaining the detection signal output by the pressure sensor 240 when the needle 10 is inserted into oral tissue, obtaining the resistance data when the needle 10 is inserted into oral tissue; obtaining the working parameters of the motor 220; substituting the resistance data and the working parameters into a preset rule to obtain the preset rotation speed of the motor 220; controlling the motor 220 to rotate at the preset rotation speed. Thus, during the use process, the rotation speed of the motor 220 can be automatically adjusted according to the oral tissue into which the needle 10 is inserted, so as to adjust the injection speed, injection pressure, and injection dosage of the anesthesia booster 200 according to the different oral tissues, thereby improving the injection efficiency, reducing the injection error, and reducing the pain of the patient during the injection process.

[0055] It should be noted that during the use of the anesthesia booster 200, it will be inserted into different oral tissues. Therefore, as the position of the needle 10 changes, the resistance exerted by different oral tissues on the anesthesia booster 200 will also change. That is, by obtaining the detection signal output by the pressure sensor 240 when the needle 10 is inserted into the oral tissue, the resistance data when the needle 10 is inserted into the oral tissue will also change. Therefore, during the use of the anesthesia booster 200, it is necessary to monitor the resistance data in real time. When the resistance data changes, its preset rotation speed will also change according to the change of the oral tissue, so that the injection speed, injection pressure, and injection dosage of the anesthesia booster 200 can be automatically adjusted in this way, so that the injection speed, injection pressure, and injection dosage of the anesthesia booster 200 can adapt to the oral tissue, thereby reducing the pain of the patient.

[0056] Furthermore, in this embodiment, to obtain the preset rotation speed of the motor 220 based on the resistance data and working parameters, a preset rule can be adopted: (where a 0 , a 1 ...a n are real numbers; b 0 , b 1 ...b n are real numbers; k = 0, 1...). In the formula, x is the working parameter of the motor 220, y is the resistance data of the pressure sensor 240, and z is the preset rotation speed of the motor 220 obtained.

[0057] It should be noted that when obtaining the working parameter of the motor 220, the working parameter of the motor 220 can be the working current of the motor 220. And in other embodiments of the present invention, other parameters of the motor 220 can also be adopted, and the above formula can be correspondingly deformed to obtain a corresponding conversion formula.

[0058] Furthermore, in this embodiment, to calibrate parameters such as the injection speed, injection pressure, and injection dosage during the working process of the anesthesia booster 200, it is necessary to calibrate the rotation speed of the motor 220. During this process, after the needle 10 is inserted into the oral tissue, that is, after the step of controlling the motor 220 to rotate at the preset rotation speed, it is necessary to calculate the rotation time of the motor 220 rotating at the preset rotation speed;

[0059] Obtain the position signal output by the position sensor 260 to detect the position of the push rod 233, and obtain the actual stroke of the push rod 233;

[0060] Obtain the actual rotation speed of the motor 220 based on the rotation time and the actual stroke, compare the preset rotation speed with the actual rotation speed. If the preset rotation speed is inconsistent with the actual rotation speed, adjust the rotation speed of the motor 220 until the preset rotation speed is consistent with the actual rotation speed.

[0061] That is, after the needle 10 of the anesthesia booster 200 is inserted into the oral tissue and starts injecting anesthetic under the control of the anesthesia booster control method, it is necessary to compare the actual rotation speed of the motor 220 with the preset rotation speed calculated by the anesthesia booster control method, so as to ensure that the actual working state of the anesthesia booster 200 is consistent with the state to be achieved by the anesthesia booster control method. Based on this, in this embodiment, the actual rotation speed of the motor 220 is obtained according to the rotation time and the actual stroke, and the preset rotation speed is compared with the actual rotation speed. If the preset rotation speed is inconsistent with the actual rotation speed, the rotation speed of the motor 220 is adjusted until the preset rotation speed is consistent with the actual rotation speed.

[0062] It should be noted that since the anesthesia booster 200 needs to be inserted into different oral tissues during operation, both its preset rotation speed and actual rotation speed will change. Therefore, it is necessary to compare the actual rotation speed of the motor 220 with the preset rotation speed in real time to ensure that the actual working state of the anesthesia booster 200 is consistent with the state to be achieved by the anesthesia booster control method.

[0063] Furthermore, in this embodiment, during the injection of anesthetic, since the amount of anesthetic in the anesthetic cartridge 20 is a fixed value, in order to play a role in prompting the user, the anesthesia booster control method also needs to monitor the remaining amount of anesthetic in the anesthetic cartridge 20. Specifically:

[0064] After the step of controlling the motor 220 to rotate at the preset rotation speed, the anesthesia booster control method further includes:

[0065] Obtain the position signal output by the position sensor 260 for detecting the position of the push rod 233 to obtain the actual stroke of the push rod 233;

[0066] Obtain the injection amount of the anesthetic and the remaining amount of anesthetic in the anesthetic cartridge 20 according to the actual stroke of the push rod 233;

[0067] When the remaining amount of anesthetic is less than the preset remaining amount, a signal is sent.

[0068] Thus, by detecting the position of the push rod 233, the cumulative pushing amount of the anesthetic can be counted, so that the remaining amount of anesthetic in the anesthetic cartridge 20 can be calculated, and a signal can be sent when the remaining amount of anesthetic is less than the preset remaining amount, which is convenient for use.

[0069] Please refer to Figures 2-5 , Figure 2 and Figure 3 which is the structural schematic diagram of the anesthesia booster in the embodiment of the present invention, Figure 4 and Figure 5This is a schematic structural diagram of the propulsion structure in the embodiments of the present invention. The present invention also provides an anesthetic booster 200, which includes a housing 210, a motor 220, a propulsion structure 230, a pressure sensor 240, and a controller 250 for executing the above-mentioned anesthetic booster control method.

[0070] Among them, the motor 220 is a brushless motor 220. The motor 220 and the propulsion structure 230 are both accommodated in the housing 210, and the housing 210 has an installation cavity for installing the anesthetic cartridge 20, and a needle hole that communicates with the installation cavity and is used for installing the needle 10.

[0071] The motor 220 is connected to the housing 210. The propulsion structure 230 includes a nut 231, a lead screw 232, and a push rod 233 that are accommodated in the housing 210. The lead screw 232 is connected to the motor 220, and the nut 231 is engaged with the lead screw 232 and connected to the push rod 233.

[0072] The motor 220 is used to drive the lead screw 232 to rotate, and drive the nut 231 and the push rod 233 to slide relative to the installation cavity, so as to abut against the anesthetic cartridge 20 located in the installation cavity and push the anesthetic in the anesthetic cartridge 20.

[0073] The pressure sensor 240 is used to detect the resistance data when the needle 10 is inserted into the oral tissue.

[0074] The controller 250 is electrically connected to the sensor and the motor 220.

[0075] The working principle of the anesthetic booster 200 is as follows:

[0076] During the use of the anesthetic booster 200, the rotation of the motor 220 can drive the movement of the propulsion structure 230, and then the anesthetic in the anesthetic cartridge 20 in the anesthetic booster 200 is pushed to the oral tissue through the propulsion structure 230. Specifically, the motor 220 and the propulsion structure 230 are both accommodated in the housing 210 and are both connected to the housing 210. The housing 210 has an installation cavity for installing the anesthetic cartridge 20 and a needle hole that communicates with the installation cavity and is used for installing the needle 10. During the use, the needle 10 is connected and communicated with the anesthetic cartridge 20 installed in the installation cavity.

[0077] The propulsion structure 230 includes a nut 231, a lead screw 232, and a push rod 233 that are accommodated in the housing 210. The lead screw 232 is connected to the motor 220, and the nut 231 is engaged with the lead screw 232 and connected to the push rod 233. Among them, the motor 220 is used to drive the lead screw 232 to rotate, and drive the nut 231 and the push rod 233 to slide relative to the installation cavity, so as to abut against the anesthetic cartridge 20 located in the installation cavity and push the anesthetic in the anesthetic cartridge 20.

[0078] The pressure sensor 240 is used to detect the resistance data when the needle 10 is inserted into the oral tissue, and transmit the signal representing the resistance data to the controller 250; the controller 250 is used to obtain the detection signal output by the pressure sensor 240 when the needle 10 is inserted into the oral tissue, so as to obtain the resistance data when the needle 10 is inserted into the oral tissue; the controller 250 is used to obtain the working parameters of the motor 220; the controller 250 is used to substitute the resistance data and the working parameters into a preset rule to obtain the preset rotation speed of the motor 220; the controller 250 is used to control the motor 220 to rotate at the preset rotation speed.

[0079] Thus, during the use of the anesthesia booster 200, the rotation speed of the motor 220 can be automatically adjusted according to the oral tissue into which the needle 10 is inserted, so as to adjust the injection speed, injection pressure and injection dosage of the anesthesia booster 200 according to different oral tissues, thereby improving the injection efficiency, reducing the injection error, and reducing the pain of the patient during the injection.

[0080] It should be noted that since the anesthesia booster 200 will be inserted into different oral tissues during use, accordingly, as the position of the needle 10 changes, the resistance applied by different oral tissues to the anesthesia booster 200 will also change. That is, by obtaining the detection signal output by the pressure sensor 240 when the needle 10 is inserted into the oral tissue, the resistance data when the needle 10 is inserted into the oral tissue will also change. Thus, during the use of the anesthesia booster 200, the resistance data is monitored in real time through the pressure sensor 240. When the resistance data received by the controller 250 changes, its preset rotation speed will also change according to the change of the oral tissue, so that the injection speed, injection pressure and injection dosage of the anesthesia booster 200 can be automatically adjusted in this way, so that the injection speed, injection pressure and injection dosage of the anesthesia booster 200 can adapt to the oral tissue, thereby reducing the pain of the patient.

[0081] Please refer to Figures 2-5 , in this embodiment, when setting the push rod 233, along the axial direction of the lead screw 232, the push rod 233 is provided with an installation hole 235 for accommodating the lead screw 232, that is, the push rod 233 is sleeved outside the lead screw 232, which is beneficial to reducing the volume of the propulsion structure 230 and the anesthesia booster 200.

[0082] Further, in this embodiment, when the needle 10 of the anesthesia booster 200 is inserted into oral tissues under the action of an external force, the anesthesia booster 200 will encounter a certain resistance. Different oral tissues have different resistances. That is, different oral tissues can be identified through the resistance, so as to adjust the injection speed, injection pressure, and injection dosage to adapt to different oral tissues. Based on this, in order to obtain the resistance data when the needle 10 is inserted into oral tissues, when the pressure sensor 240 is set, the pressure sensor 240 is located at the connection between the push rod 233 and the nut 231. In other embodiments of this embodiment, the pressure sensor 240 can also be located at the connection between the needle 10 and the anesthetic cartridge 20 or at the connection between the motor 220 and the propulsion structure 230.

[0083] Please refer to Figures 2-5 , in this embodiment, when pushing the anesthetic, the motor 220 is used to drive the screw rod 232 to rotate. The rotation of the screw rod 232 drives the nut 231 to slide in the housing 210, thereby driving the push rod 233 to slide. During this process, in order to prevent the nut 231 from rotating synchronously with the screw rod 232 during the rotation of the screw rod 232, the anesthesia booster 200 further includes a guide block 251 connected to the nut 231 and a guide groove 252 formed on the inner wall of the housing 210. The extending direction of the guide groove 252 coincides with the axial direction of the screw rod 232; the guide block 251 cooperates with the guide groove 252 to limit the nut 231, so that the cooperation between the nut 231 and the screw rod 232 can convert the rotation of the screw rod 232 into the sliding of the nut 231, thereby being able to push the push rod 233 to slide. When setting the guide groove 252, along the axial direction of the screw rod 232, the maximum distance that the nut 231 slides relative to the installation cavity is less than the length of the guide groove 252 to prevent the guide groove 252 from affecting the sliding of the nut 231 along the axial direction of the screw rod 232.

[0084] Please refer to Figure 5 , when setting the push rod 233, in order to push the anesthetic in the anesthetic cartridge 20, one end of the push rod 233 needs to extend into the anesthetic cartridge 20. And in the process of the push rod 233 sucking back, a negative pressure is formed to pull back the piston of the anesthetic cartridge 20, sucking back tissue fluid or blood from the position of the injection in the human body to indicate whether the injection position of the needle 10 is located in a blood vessel. Therefore, an annular sealing ring 234 that fits the inner wall of the barrel of the anesthetic cartridge 20 is provided at the end of the push rod 233 for abutting against the anesthetic cartridge 20.

[0085] In this embodiment, the anesthesia booster 200 also includes a position sensor 260, which is electrically connected to the controller 250, and is connected to the housing 210, and is used to detect the position of the push rod 233 in the housing 210, so that by detecting the position of the push rod 233, the cumulative push amount of the anesthetic can be counted, so that the anesthetic residue in the anesthetic cartridge 20 can be calculated, and when the anesthetic residue is less than the preset residue, a signal can be sent, so that it can be convenient to use. In addition, in order to facilitate the observation of the anesthetic residue of the anesthetic cartridge 20 in the installation cavity, the housing 210 forming the installation cavity is provided with an observation port connected to the outside world.

[0086] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An anesthetic booster, characterized in that: The anesthetic booster includes a housing, a motor, a propulsion structure, a pressure sensor, a position sensor, and a controller; The motor and the propulsion structure are both accommodated in the housing, and the housing is provided with an installation cavity for installing an anesthetic cartridge, and a needle hole communicating with the installation cavity and used for installing a needle; The motor is connected to the housing. The propulsion structure includes a nut, a lead screw, and a push rod accommodated in the housing. The lead screw is connected to the motor, and the nut is engaged with the lead screw and connected to the push rod; The motor is used to drive the lead screw to rotate, and drive the nut and the push rod to slide relative to the installation cavity to abut against the anesthetic cartridge located in the installation cavity and push the anesthetic in the anesthetic cartridge; the pressure sensor is used to detect the resistance data when the needle is inserted into oral tissue; the position sensor is connected to the housing and is used to detect the position of the push rod in the housing; The controller is electrically connected to the pressure sensor, the motor, and the position sensor; the controller is used to obtain the detection signal output by the pressure sensor to obtain the resistance data of the needle; the controller is also used to obtain the working parameters of the motor; the controller is also used to substitute the resistance data and the working parameters into a preset rule to obtain the preset rotation speed of the motor, and control the motor to rotate at the preset rotation speed; The controller is also used to calculate the rotation time of the motor rotating at the preset rotation speed, and obtain the position signal output by the position sensor for detecting the position of the push rod to obtain the actual stroke of the push rod. According to the rotation time and the actual stroke, obtain the actual rotation speed of the motor, and compare the preset rotation speed with the actual rotation speed. If the preset rotation speed is inconsistent with the actual rotation speed, adjust the rotation speed of the motor until the preset rotation speed is consistent with the actual rotation speed.

2. The anesthetic booster according to claim 1, characterized in that: The pressure sensor is located at the connection between the motor and the propulsion structure.

3. The anesthetic booster according to claim 1, characterized in that: The pressure sensor is located at the connection between the push rod and the nut or at the connection between the needle and the anesthetic cartridge.

4. The anesthetic booster according to claim 1, characterized in that: The anesthetic booster further includes a guide block connected to the nut and a guide groove opened on the inner wall of the housing. The extending direction of the guide groove coincides with the axial direction of the lead screw; the guide block is engaged with the guide groove.

5. The anesthetic booster according to claim 1, characterized in that: One end of the push rod for abutting against the anesthetic cartridge is provided with an annular sealing ring that fits the inner wall of the cartridge of the anesthetic cartridge.

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