Anesthesia quantitative sprayer

Abstract

The anesthetic quantitative sprayer comprises a bottle body for storing liquid medicine, a mounting shell and an atomizing spray head, an adjusting block is arranged between the mounting shell and the atomizing spray head, the adjusting block and the atomizing spray head are coaxial and are rotationally connected with the mounting shell, and a plurality of inserting grooves extending towards the bottom face of the adjusting block are formed in the top face of the adjusting block; the plurality of slots are annularly distributed around the axis of the adjusting block, and the depths of the plurality of slots are different from each other; an inserting rod vertically extending downwards is arranged on the bottom surface of the atomizing nozzle, the inserting rod is located above the rotating track of the inserting groove, and any inserting groove can be moved to the position below the inserting rod and located on the sliding track of the inserting rod by rotating the adjusting block. According to different use requirements, the adjusting block can be rotated, the maximum pressing degree of the atomizing spray head is adjusted through cooperation of the inserting rod and the different inserting grooves, the output medicine amount of the liquid supply assembly is in positive correlation with pressing of the atomizing spray head, and therefore the single-time spraying dosage is controlled so as to be suitable for different patients and different diagnosis and treatment operations.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an anesthetic metering sprayer. Background Technology

[0002] Local anesthesia of the pharynx and larynx is an important preparatory step before otolaryngological examinations, gastroscopy, endotracheal intubation, and other upper respiratory tract diagnostic and treatment procedures. Its purpose is to suppress the pharyngeal reflex, reduce nausea, vomiting, and coughing reactions in patients during the examination or treatment, improve patient comfort and cooperation, and ensure the safety and smooth conduct of the procedure.

[0003] Currently, the most widely used pharyngeal anesthesia devices in clinical practice are fixed-dose, press-type nebulizers. These devices typically consist of a bottle containing the anesthetic solution and a nebulizing nozzle attached to the bottle. During operation, medical personnel aim the nozzle at the patient's throat and press to atomize the medication.

[0004] However, existing nebulizers are difficult to adjust in practical applications, making them unsuitable for different patients (such as adult men and children, patients with different sensitivities to anesthesia) and different diagnostic and treatment procedures (such as simple laryngoscopy and bronchoscopy requiring deep sedation). Nebulizers with fixed output doses cannot adequately meet these diverse needs; for example, too low a dose may result in insufficient anesthetic effect, causing patient discomfort during the procedure, while too high a dose may lead to excessive absorption of anesthetic drugs, increasing the risk of side effects. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an anesthetic dosage nebulizer to solve the problem that the output dose of the existing nebulizer is inconvenient to adjust in practical applications and cannot be well adapted to different patients and different diagnostic and treatment procedures.

[0006] This invention is achieved through the following technical solution: An anesthetic metering sprayer includes a bottle for storing liquid medication, a mounting shell mounted on the bottle, and an atomizing nozzle slidably connected to the mounting shell. An adjusting block is provided between the mounting shell and the atomizing nozzle. The adjusting block is coaxial with the atomizing nozzle and rotatably connected to the mounting shell. The top surface of the adjusting block has multiple slots extending toward its bottom surface. The multiple slots are arranged in a ring around the axis of the adjusting block, and the depths of the multiple slots are different. The bottom surface of the atomizing nozzle is provided with a downwardly extending rod. The rod is located above the rotation trajectory of the slot. By rotating the adjusting block, any of the slots can be moved to the bottom of the rod and located on the sliding trajectory of the rod.

[0007] Furthermore, the depths of the plurality of slots increase or decrease sequentially along the circumferential direction of the adjustment block.

[0008] Furthermore, the top surface or outer circular surface of the adjustment block is provided with multiple markers, which are arranged in a ring around the axis of the adjustment block, and each marker corresponds to a slot.

[0009] Furthermore, the multiple markers are numbers of varying sizes, with the numbers increasing or decreasing sequentially along the circumference of the adjustment block, and the size of the numbers being positively correlated with the depth of the slot.

[0010] Furthermore, the bottom surface of the adjusting block is provided with a receiving groove extending toward its top surface. A positioning ball and a first elastic element are provided in the receiving groove. The positioning ball is slidably connected to the receiving groove. The positioning ball is connected to the upper end of the first elastic element. The lower end of the first elastic element is connected to the bottom surface of the receiving groove. The top surface of the mounting shell has multiple grooves extending toward its top surface. The multiple grooves are evenly distributed along the circumference of the mounting shell. The rotation trajectory of the grooves is located below the positioning ball. By rotating the adjusting block, any one of the grooves can be moved to the bottom of the receiving groove and located on the sliding trajectory of the positioning ball.

[0011] Furthermore, the outer circular surface of the adjusting block is provided with anti-slip textures distributed along its circumference, and the anti-slip textures extend along the axial direction of the adjusting block.

[0012] Furthermore, the inner wall of the mounting shell is provided with internal threads, and the outer wall at the upper end of the bottle body is provided with external threads, and the mounting shell and the bottle body are threadedly connected.

[0013] Furthermore, it also includes a liquid supply assembly for supplying the liquid medicine in the bottle to the atomizing nozzle. The liquid supply assembly includes an outer tube, an inner tube, a one-way valve structure, and an input tube. The upper end of the inner tube is connected to the atomizing nozzle, and the lower end of the inner tube is located inside the outer tube. The inner tube and the outer tube are connected and slidably connected. The input tube is connected to the lower end of the outer tube. A pressure chamber is formed between the inner tube and the input tube, located inside the outer tube. The one-way valve structure is located inside the pressure chamber. When the inner tube moves downward, the pressure in the pressure chamber increases. When the inner tube moves upward, the pressure in the pressure chamber decreases. When the pressure in the pressure chamber decreases, the one-way valve structure opens and, in conjunction with the input tube, inputs the liquid medicine in the bottle into the pressure chamber. When the pressure in the pressure chamber increases, the liquid medicine in the pressure chamber is input to the atomizing nozzle for output through the inner tube.

[0014] Furthermore, the inner wall of the outer tube is provided with a limiting groove extending along its axial direction, and a limiting block is provided in the limiting groove. The limiting block is slidably engaged with the limiting groove and can slide along the axial direction of the outer tube. The limiting block is connected to the outer wall of the inner tube.

[0015] Furthermore, the one-way valve structure includes a second elastic element and a ball. The connection area between the pressure chamber and the input pipe is a tapered opening with a gradually decreasing diameter from top to bottom. The ball is located inside the tapered opening, the second elastic element is located above the ball, the lower end of the second elastic element is connected to the ball, and the upper end of the second elastic element is connected to the lower end of the inner pipe.

[0016] The beneficial effects of this invention are as follows: This type of anesthetic nebulizer allows for adjustment by rotating the adjustment block according to different usage needs. The maximum pressure that the nebulizer nozzle can be pressed can be adjusted through the cooperation of the plug and different slots. The output drug volume of the liquid supply component is positively correlated with the pressure of the nebulizer nozzle, thereby controlling the dosage of a single spray to suit different patients and different diagnostic and treatment procedures.

[0017] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure when the mounting shell of the present invention is connected to the bottle body; Figure 2 This is a schematic diagram of the structure when the mounting shell of the present invention is separated from the bottle body; Figure 3 This is a schematic diagram of the mounting shell and adjusting block of the present invention; Figure 4 This is a schematic diagram of the structure of the adjusting block of the present invention; Figure 5 This is a schematic diagram of the internal structure of the bottle body of the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 This is a schematic diagram of the internal structure of the outer tube of the present invention.

[0019] In the picture: 1. Bottle body; 2. Mounting shell; 3. Atomizing nozzle; 301. Insert rod; 4. Adjusting block; 401. Slot; 5. Identifier; 6. Receiving groove; 601. Positioning ball; 602. First elastic element; 7. Groove; 8. Anti-slip texture; 9. Outer tube; 10. Inner tube; 11. Input tube; 12. Pressure chamber; 13. Second elastic element; 14. Ball. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0025] Please see Figure 1-7 The present invention provides a technical solution: an anesthetic metering sprayer, comprising a bottle body 1 for storing liquid medicine, a mounting shell 2 mounted on the bottle body 1, and an atomizing nozzle 3 slidably connected to the mounting shell 2. An adjusting block 4 is provided between the mounting shell 2 and the atomizing nozzle 3. The adjusting block 4 is coaxial with the atomizing nozzle 3 and rotatably connected to the mounting shell 2. The top surface of the adjusting block 4 has a plurality of slots 401 extending toward its bottom surface. The plurality of slots 401 are arranged in a ring around the axis of the adjusting block 4, and the depths of the plurality of slots 401 are different from each other. The bottom surface of the atomizing nozzle 3 is provided with a downwardly extending insertion rod 301. The insertion rod 301 is located above the rotation trajectory of the slot 401. By rotating the adjusting block 4, any slot 401 can be moved to the underside of the insertion rod 301 and located on the sliding trajectory of the insertion rod 301.

[0026] It also includes a liquid supply component for supplying the liquid medicine in the bottle 1 to the atomizing nozzle 3. The output amount of the liquid supply component is positively correlated with the degree of pressing of the atomizing nozzle 3. The liquid medicine in the bottle 1 can be output by pressing the atomizing nozzle 3 in conjunction with the liquid supply component.

[0027] In this design, the atomizing nozzle 3 and the insert rod 301 are connected as a whole by means of bonding or heat fusion. Therefore, when medical staff press the atomizing nozzle 3, the atomizing nozzle 3 and the insert rod 301 move downward synchronously, that is, both move towards the adjusting block 4.

[0028] In its natural state, the bottom surface of the insert rod 301 abuts or makes slight contact with the top surface of the adjusting block 4. Therefore, as the atomizing nozzle 3 and the insert rod 301 move downwards synchronously, the lower end of the insert rod 301 will be inserted into the slot 401 on the adjusting block 4 that is vertically opposite to the insert rod 301. The maximum extent to which the insert rod 301 can be inserted is affected by the depth of the slot 401. That is, the degree to which the atomizing nozzle 3 is pressed downwards is positively correlated with the depth of the slot 401.

[0029] In actual use, medical staff adjust the adjustment block 4 in advance according to different usage needs. By rotating the adjustment block 4, one of the slots 401 of different depths on the adjustment block 4 is moved to the bottom of the insertion rod 301. Then, the atomizing nozzle 3 is pressed down to spray the medicine. During this process, the insertion rod 301 moves down and the bottom surface of the insertion rod 301 finally abuts against the bottom surface of the slot 401 to achieve a single spray.

[0030] That is, when using the anesthetic metering sprayer of the present invention to anesthetize the patient's throat, the adjustment block 4 can be rotated according to different usage needs, and the maximum degree to which the nebulizer nozzle 3 can be pressed can be adjusted by the cooperation of the plug 301 and different slots 401. The output amount of the liquid supply component is positively correlated with the pressing of the nebulizer nozzle 3, thereby controlling the dosage of a single spray to suit different patients and different diagnostic and treatment operations.

[0031] Taking slot 401 with three different depths as an example, the following data was obtained after multiple experiments: Slot A (shallow slot) depth H1 = 3.0 mm Slot B (middle slot) depth H2 = 5.0 mm Slot C (deep slot) depth H3 = 7.0 mm Measurement results of drug output after a single press of the atomizing nozzle (unit: μL): Based on the analysis and statistics of the above experimental data, the following data was obtained: After multiple experiments, when the slot depth was 3.0 mm, 5.0 mm and 7.0 mm, the corresponding average single spray dose was 52.04 μL, 86.31 μL and 121.14 μL, respectively, with coefficients of variation all less than 0.5%, showing good dosage accuracy and repeatability.

[0032] Based on the data above, the three different depth slots can be divided into: low-dose (slot A) is suitable for children, patients sensitive to anesthesia, or simple examinations that only require mild suppression of the pharyngeal reflex (such as routine laryngoscopy); medium-dose (slot B) is for routine procedures for most adult patients, such as pharyngeal anesthesia before gastroscopy; and high-dose (slot C) is for difficult airway management requiring deep sedation, bronchoscopy, or for physically strong patients who are not sensitive to anesthesia.

[0033] In this embodiment, the depth of the plurality of slots 401 increases or decreases sequentially along the circumferential direction of the adjustment block 4.

[0034] In this scheme, multiple slots 401 are arranged in an orderly manner along the circumference of the adjustment block 4, so that when medical staff rotate the adjustment block 4, they can continuously increase or decrease the dose by rotating in one direction until the adjustment block 4 rotates 360° and the starting point returns to its original position, forming a new rotation cycle, which is convenient for medical staff to operate.

[0035] In this embodiment, the top surface or outer circular surface of the adjustment block 4 is provided with a plurality of marker bodies 5, which are arranged in a ring around the axis of the adjustment block 4, and the plurality of marker bodies 5 are one-to-one with the plurality of slots 401.

[0036] In this solution, a marker 5 corresponding to each slot 401 is set on the top surface or outer circular surface of the adjusting block 4, and the multiple markers 5 are not the same, so that medical staff can intuitively see the marker 5 and know the position of the slot 401.

[0037] The insertion rod 301 is connected to the atomizing nozzle 3 at the output end of the atomizing nozzle 3. That is, medical staff can know the direction of the insertion rod 301 by observing the position of the output end of the atomizing nozzle 3, so as to facilitate rotating the adjustment block 4 and rotating the slot 401 to be opposite to the marker body 5. At this time, the insertion rod 301 and the slot 401 are aligned vertically.

[0038] In this embodiment, the multiple markers 5 are numbers of different sizes, and the size of the numbers increases or decreases sequentially along the circumference of the adjustment block 4. The size of the numbers is positively correlated with the depth of the slot 401.

[0039] In this scheme, the size of the number is positively correlated with the depth of the slot 401. That is, the larger the number, the greater the depth of the slot 401. The size of the number is used to represent the depth of the slot 401, so that the number is regarded as different gears, so that medical staff can move the appropriate slot 401 directly under the insertion rod 301 by using the size of the number.

[0040] For example, the low-dose setting (slot A), medium-dose setting (slot B), and high-dose setting (slot C) correspond to the numbers 1, 2, and 3, respectively. When medical personnel rotate the number 3 so that it is aligned with the output end of the nebulizer nozzle 3, the insertion rod 301 is aligned vertically with slot C, and the nebulizer nozzle 3 can output the maximum dose.

[0041] In this embodiment, the bottom surface of the adjusting block 4 is provided with a receiving groove 6 extending toward its top surface. The receiving groove 6 is provided with a positioning ball 601 and a first elastic member 602. The positioning ball 601 is slidably connected to the receiving groove 6. The positioning ball 601 is connected to the upper end of the first elastic member 602, and the lower end of the first elastic member 602 is connected to the bottom surface of the receiving groove 6. The top surface of the mounting shell 2 is provided with a plurality of grooves 7 extending toward its top surface. The plurality of grooves 7 are evenly distributed along the circumference of the mounting shell 2. The rotation trajectory of the grooves 7 is located below the positioning ball 601. By rotating the adjusting block 4, any one of the grooves 7 can be moved to the bottom of the receiving groove 6 and located on the sliding trajectory of the positioning ball 601.

[0042] In this design, in its natural state, the first elastic element 602 applies a thrust to the positioning ball 601 away from the receiving groove 6, pushing the positioning ball 601 outward from the receiving groove 6. Under the action of this thrust, the positioning ball 601 comes into contact with one of the grooves 7 or the top surface of the mounting shell 2. The groove 7 is an arc-shaped groove adapted to the positioner.

[0043] In practical use, when the adjusting block 4 is rotated, the receiving groove 6, the first elastic element 602, and the positioning ball 601 rotate synchronously and in the same direction around the axis of the adjusting block 4. The positions of the receiving groove 6 and the groove 7 cause the positioning ball 601 and the first elastic element 602 to be in the following states: State 1: The receiving groove 6 is located between any two adjacent grooves 7. In this state, the positioning ball 601 is in contact with the top surface (plane) of the mounting shell 2, and the positioning ball 601 is completely located in the receiving groove 6. The first elastic element 602 elastically stores energy. State 2: The receiving groove 6 is aligned vertically with one of the grooves 7. In this state, the first elastic element 602 releases its elasticity, pushing 1 / 3 of the positioning ball 601 out of the receiving groove 6, so that the pushed-out part of the positioning ball 601 is embedded in the groove 7. During the process of changing from State 2 to State 1, the positioning ball 601 retracts back into the receiving groove 6 under the pressure of the arc surface of the groove 7.

[0044] When state one changes to state two by rotating the adjusting block 4, the positioning ball 601 is pushed into the groove 7 under the elastic force of the first elastic element 602, generating vibration and forming tactile feedback. Furthermore, the positioning ball 601 is embedded in the groove 7 under the action of the first elastic element 602, providing a certain resistance to the adjusting block 4 and preventing accidental rotation.

[0045] In this embodiment, the outer circular surface of the adjusting block 4 is provided with anti-slip textures 8 distributed along its circumference, and the anti-slip textures 8 extend along the axial direction of the adjusting block 4.

[0046] In this design, axially extending anti-slip textures 8 are provided on the outer circular surface of the adjusting block 4, which increases the friction between the fingers of medical staff and the contact surface of the adjusting block 4, making it less likely for medical staff to slip when rotating the adjusting block 4.

[0047] In this embodiment, the inner wall of the mounting shell 2 is provided with internal threads, and the outer wall of the upper end of the bottle body 1 is provided with external threads. The mounting shell 2 and the bottle body 1 are threadedly connected.

[0048] In this design, the internal thread on the inner wall of the mounting shell 2 engages with the external thread on the upper outer wall of the bottle body 1, enabling a detachable connection between the mounting shell 2 and the bottle body 1. This allows for the assembly and disassembly of the mounting shell 2 and the bottle body 1, facilitating the addition of liquid medicine to the bottle body 1 after the mounting shell 2 is removed.

[0049] In this embodiment, the liquid supply assembly includes an outer tube 9, an inner tube 10, a one-way valve structure, and an input tube 11. The upper end of the inner tube 10 is connected to the atomizing nozzle 3, and the lower end of the inner tube 10 is located inside the outer tube 9. The inner tube 10 and the outer tube 9 are connected and slidably connected. The input tube 11 is connected to the lower end of the outer tube 9. A pressure chamber 12 is formed between the inner tube 10 and the input tube 11, located inside the outer tube 9. The one-way valve structure is located inside the pressure chamber 12. When the inner tube 10 moves downward, the pressure inside the pressure chamber 12 increases. When the inner tube 10 moves upward, the pressure inside the pressure chamber 12 decreases. When the pressure inside the pressure chamber 12 decreases, the one-way valve structure opens and, in conjunction with the input tube 11, inputs the liquid medicine in the bottle 1 into the pressure chamber 12. When the pressure inside the pressure chamber 12 increases, the liquid medicine in the pressure chamber 12 is input to the atomizing nozzle 3 through the inner tube 10 for output.

[0050] The one-way valve structure includes a second elastic element 13 and a ball 14. The connection area between the pressure chamber 12 and the input pipe 11 is a tapered opening with a gradually decreasing diameter from top to bottom. The ball 14 is located inside the tapered opening. The second elastic element 13 is located above the ball 14. The lower end of the second elastic element 13 is connected to the ball 14, and the upper end of the second elastic element 13 is connected to the lower end of the inner pipe 10.

[0051] In this scheme, the upper end of the inner tube 10 is connected to the atomizing nozzle 3, and the upper end of the inner tube 10 is connected to the input end of the atomizing nozzle 3. The lower end of the inner tube 10 is slidably connected to the outer tube 9.

[0052] In its natural state, the second elastic member 13 pushes the ball 14 toward the input pipe 11 at its end. Under this thrust, the ball 14 is embedded in the conical opening, and the ball 14 blocks the connection between the pressure chamber 12 and the input pipe 11.

[0053] In actual use, when the atomizing nozzle 3 is pressed down, the inner tube 10 moves down synchronously with the atomizing nozzle 3, squeezing the second elastic element 13 to store its elastic energy while compressing the pressure chamber 12. The pressure in the pressure chamber 12 increases, forcing the liquid medicine in the pressure chamber 12 to flow through the inner tube 10 to the nozzle and spray out, thus achieving a single spray. When the atomizing nozzle 3 is released, the second elastic element 13 releases its elastic force, causing the inner tube 10 to move upward under the action of the elastic force. The volume of the pressure chamber 12 increases, forming a negative pressure. Under the action of the negative pressure, the ball 14 overcomes the elastic force of the second elastic element 13 and moves away from the conical opening. Through the negative pressure and the cooperation of the input tube 11, the liquid medicine in the bottle 1 is sucked into the pressure chamber 12. When the atomizing nozzle 3 is pressed again, the liquid medicine pressure and the second elastic element 13 work together to press the ball 14 tightly onto the conical opening, sealing the channel and forcing the liquid medicine to flow upward toward the atomizing nozzle 3.

[0054] In this embodiment, the inner wall of the outer tube 9 is provided with a limiting groove extending along its axial direction, and a limiting block is provided in the limiting groove. The limiting block is slidably engaged with the limiting groove and can slide along the axial direction of the outer tube 9. The limiting block is connected to the outer wall of the inner tube 10.

[0055] In this design, the limiting groove on the inner wall of the outer tube 9 cooperates with the limiting block connected to the inner tube 10 to restrict the inner tube 10 to slide axially within the outer tube 9 and prevent it from rotating, thereby enhancing the stability of the inner tube 10.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An anesthetic metering sprayer, comprising a bottle body (1) for storing medication, a mounting shell (2) mounted on the bottle body (1), and an atomizing nozzle (3) slidably connected to the mounting shell (2), characterized in that: An adjusting block (4) is provided between the mounting shell (2) and the atomizing nozzle (3). The adjusting block (4) is coaxial with the atomizing nozzle (3) and rotatably connected to the mounting shell (2). The top surface of the adjusting block (4) is provided with a plurality of slots (401) extending toward its bottom surface. The plurality of slots (401) are arranged in a ring around the axis of the adjusting block (4), and the depths of the plurality of slots (401) are different from each other. The bottom surface of the atomizing nozzle (3) is provided with a downwardly extending rod (301). The rod (301) is located above the rotation trajectory of the slot (401). By rotating the adjusting block (4), any slot (401) can be moved to the bottom of the rod (301) and located on the sliding trajectory of the rod (301).

2. The anesthetic metering sprayer according to claim 1, characterized in that: The depths of the multiple slots (401) increase or decrease sequentially along the circumferential direction of the adjustment block (4).

3. The anesthetic metering sprayer according to claim 1, characterized in that: The top or outer circular surface of the adjustment block (4) is provided with a plurality of markers (5), which are arranged in a ring around the axis of the adjustment block (4), and the plurality of markers (5) are opposite to the plurality of slots (401).

4. The anesthetic metering sprayer according to claim 3, characterized in that: Multiple markers (5) are numbers of different sizes, with the numbers increasing or decreasing sequentially along the circumference of the adjustment block (4), and the number size being positively correlated with the depth of the slot (401).

5. The anesthetic metering sprayer according to claim 1, characterized in that: The bottom surface of the adjusting block (4) is provided with a receiving groove (6) extending toward its top surface. A positioning ball (601) and a first elastic element (602) are provided in the receiving groove (6). The positioning ball (601) is slidably connected to the receiving groove (6). The positioning ball (601) is connected to the upper end of the first elastic element (602). The lower end of the first elastic element (602) is connected to the bottom surface of the receiving groove (6). The top surface of the mounting shell (2) is provided with a plurality of grooves (7) extending toward its top surface. The plurality of grooves (7) are evenly distributed along the circumferential direction of the mounting shell (2). The rotation trajectory of the grooves (7) is located below the positioning ball (601). By rotating the adjusting block (4), any groove (7) can be moved to the bottom of the receiving groove (6) and located on the sliding trajectory of the positioning ball (601).

6. The anesthetic metering sprayer according to claim 5, characterized in that: The outer circular surface of the adjusting block (4) is provided with anti-slip textures (8) distributed along its circumference, and the anti-slip textures (8) extend along the axial direction of the adjusting block (4).

7. The anesthetic metering sprayer according to claim 1, characterized in that: The inner wall of the mounting shell (2) is provided with an internal thread, and the outer wall of the upper end of the bottle body (1) is provided with an external thread. The mounting shell (2) and the bottle body (1) are threadedly connected.

8. The anesthetic metering sprayer according to claim 1, characterized in that: It also includes a liquid supply assembly for supplying the liquid medicine in the bottle (1) to the atomizing nozzle (3). The liquid supply assembly includes an outer tube (9), an inner tube (10), a one-way valve structure, and an input pipe (11). The upper end of the inner tube (10) is connected to the atomizing nozzle (3), and the lower end of the inner tube (10) is located inside the outer tube (9). The inner tube (10) and the outer tube (9) are connected and slidably connected. The input pipe (11) is connected to the lower end of the outer tube (9). A pressure chamber (12) located inside the outer tube (9) is formed between the inner tube (10) and the input pipe (11). The one-way valve structure is located inside the pressure chamber (12); when the inner tube (10) moves downward, the pressure inside the pressure chamber (12) increases; when the inner tube (10) moves upward, the pressure inside the pressure chamber (12) decreases; when the pressure inside the pressure chamber (12) decreases, the one-way valve structure opens and, in conjunction with the input tube (11), inputs the liquid medicine in the bottle (1) into the pressure chamber (12); when the pressure inside the pressure chamber (12) increases, the liquid medicine in the pressure chamber (12) is input into the atomizing nozzle (3) through the inner tube (10) for output.

9. The anesthetic metering sprayer according to claim 8, characterized in that: The inner wall of the outer tube (9) is provided with a limiting groove extending along its axial direction. A limiting block is provided in the limiting groove. The limiting block is slidably engaged with the limiting groove and can slide along the axial direction of the outer tube (9). The limiting block is connected to the outer wall of the inner tube (10).

10. The anesthetic metering sprayer according to claim 8, characterized in that: The one-way valve structure includes a second elastic element (13) and a ball (14). The connection area between the pressure chamber (12) and the input pipe (11) is a tapered opening with a gradually decreasing diameter from top to bottom. The ball (14) is located inside the tapered opening. The second elastic element (13) is located above the ball (14). The lower end of the second elastic element (13) is connected to the ball (14), and the upper end of the second elastic element (13) is connected to the lower end of the inner pipe (10).

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