An anesthetic drug spraying device

Abstract

An anesthetic drug spraying device, comprising: a screening and adjusting mechanism, a spray can, an ultrasonic generator, a flow guide cover, a screening cover, and a particle screening member installed in the spray can. The screening and adjusting mechanism is rotatably installed on the spray can, and the screening and adjusting mechanism is connected to the particle screening member for adjusting the distance between the screening baffle and the ultrasonic generator. The flow guide cover is sleeved outside the ultrasonic generator, and the ultrasonic generator is arranged at the bottom of the spray can through the flow guide cover for atomizing the anesthetic drug to form fine anesthetic drug particles. The screening cover is arranged above the flow guide cover, and a recovery gap is formed between the screening cover and the flow guide cover for recovering the anesthetic drug to the lower part of the ultrasonic generator through the recovery gap. The particle screening member is arranged in the screening cover in a liftable manner, and the fine anesthetic drug particles generated by the ultrasonic generator are screened by the particle screening member, so that the anesthetic drug aerosol with smaller particles is output outside the screening cover.

Description

Technical Field

[0001] The present invention belongs to the technical field of anesthesia devices, and particularly relates to an anesthetic drug spraying device. Background Art

[0002] It is an important issue to be considered in the diagnosis and treatment of many clinical departments to enable patients to undergo examinations and treatments under the premise of being as painless, safe, and comfortable as possible. Whether it is the examination and treatment of the pharynx and larynx in the otolaryngology department, bronchoscopy examination, or tracheal intubation under spontaneous breathing to ensure the safety of patients with difficult airways, an anesthetic drug spraying device is required to perform topical anesthesia on the pharynx and larynx. An effective anesthetic drug spraying device is the premise for ensuring effective anesthesia, patient safety, and comfort. Existing anesthetic spraying devices all use high-pressure atomizing nozzles to atomize and spray anesthetic drugs. The high-pressure nozzle sprays out small water droplets by the high-speed rotation of the liquid. In this atomization method, the atomization is uneven, and the drug is sprayed out in a circular shape along the circumference of the nozzle, with no drug in the middle, resulting in uneven spraying of the drug; moreover, the existing spraying device cannot adjust the size of the drug particles and cannot meet the spraying anesthesia requirements of different parts. Summary of the Invention

[0003] Aiming at the above deficiencies, the technical problem to be solved by the present invention is to provide an anesthetic drug spraying device that can change the size of the atomized drug particles according to the usage requirements, so as to meet the spraying anesthesia requirements of different parts.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is

[0005] An anesthetic drug spraying device for atomizing and spraying anesthetic drugs, comprising:

[0006] An ultrasonic generator for atomizing anesthetic drugs, and a diversion cover for diverting the atomized anesthetic drugs is arranged outside the ultrasonic generator;

[0007] A screening cover is arranged above the diversion cover. A recovery gap is formed between the screening cover and the diversion cover, and the anesthetic drug is recovered to the lower part of the ultrasonic generator through the recovery gap. A spray nozzle is arranged on the screening cover;

[0008] A particle screening member is arranged in the screening cover in a liftable manner. A screening baffle is arranged on the particle screening member, and a screening gap is arranged between the screening baffle and the screening cover. The anesthetic drug moves to the upper part of the screening baffle through the screening gap. The screening baffle is arranged above the ultrasonic generator;

[0009] A screening adjustment mechanism is connected to the particle screening member for adjusting the distance between the screening baffle and the ultrasonic generator;

[0010] A spray can is used for installing an ultrasonic generator, a screening cover, a particle screening member, and a screening adjustment mechanism. A spray head and a blowing assembly are provided on the spray can. The spray nozzle is inserted into the spray head, and the blowing assembly is connected to the spray head for blowing air at the outlet of the spray head.

[0011] As a preferred embodiment of the present invention, the screening adjustment mechanism includes an adjustment end cover rotatably installed on the spray can. The particle screening member is rotationally connected to the adjustment end cover by a thread. A guide plate for guiding the lifting of the particle screening member is provided on the screening cover. The adjustment end cover and the guide plate cooperate to drive the particle screening member to lift.

[0012] As a preferred embodiment of the present invention, an adjustment limit block is provided on the adjustment end cover, and an adjustment limit groove adapted to the adjustment limit block is provided on the side wall of the spray can. The rotation angle of the adjustment end cover is limited by the cooperation of the adjustment limit block and the adjustment limit groove.

[0013] As a preferred embodiment of the present invention, an installation limit groove is provided in the spray can, and the screening cover is installed in the spray can through the installation limit groove to enable relative rotation of the adjustment end cover and the particle screening member.

[0014] As a preferred embodiment of the present invention, the screening adjustment mechanism further includes a flow rate adjustment plate. A flow rate adjustment groove is provided on the adjustment end cover, and the flow rate adjustment plate is adjustably arranged on the flow rate adjustment groove to change the opening area of the flow rate adjustment groove.

[0015] As a preferred embodiment of the present invention, the particle screening member includes an adjustment column and a spoiler. The adjustment column is connected to the screening adjustment mechanism by a thread. The spoiler and the screening baffle are fixed on the adjustment column, and the spoiler is arranged below the screening baffle.

[0016] As a preferred embodiment of the present invention, both the spoiler and the screening baffle are inclined to drip the condensed anesthetic drug above or below the ultrasonic generator.

[0017] As a preferred embodiment of the present invention, a diversion ring is provided on the diversion cover. The upper end surface of the diversion ring and the upper end surface of the diversion cover are both inclined. A liquid collecting groove for diverting the condensed anesthetic drug liquid to below the ultrasonic generator is provided on the side wall of the diversion cover.

[0018] As a preferred embodiment of the present invention, the bottom of the spray can is conically arranged, and a diversion column for diverting the liquid to below the ultrasonic generator is connected in the middle of the spray can.

[0019] As a preferred embodiment of the present invention, a hydrophobic coating is applied on the inner wall of the bottom of the spray can, a hydrophobic coating is applied on the bottom of the diversion column, and a hydrophilic coating is applied on the top of the diversion column.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By adjusting the distance between the particle screening member and the ultrasonic generator through the screening adjustment mechanism, atomized drugs of different particle sizes can be screened, and the particle size of the drug atomization output by this device can be changed, so as to meet the spray anesthesia requirements of different parts.

[0021] (2) The particle screening member can be lifted and adjusted through an external adjustment end cover, improving the adjustment convenience of the particle screening member. Brief Description of the Drawings

[0022] Figure 1 It is a schematic structural view of the device in the first embodiment.

[0023] Figure 2 It is a cross-sectional view of the device in the first embodiment.

[0024] Figure 3 It is a schematic structural view after the ultrasonic generator and the flow guiding cover are assembled.

[0025] Figure 4 It is a schematic structural view of the screening cover.

[0026] Figure 5 It is a schematic structural view of the particle screening member.

[0027] Figure 6 It is a schematic structural view of the screening adjustment mechanism.

[0028] Figure 7 It is a schematic structural view of the spray can.

[0029] Figure 8 It is a schematic structural view of the device in the second embodiment.

[0030] Figure 9 It is Figure 8 a partial enlarged view of part A in

[0031] Reference numerals: ultrasonic generator 1, flow guide cover 2, flow guide ring 2-1, liquid collecting tank 2-2, screening cover 3, spray nozzle 3-1, guide plate 3-2, return section 3-3, connection section 3-4, installation section 3-5, shaft tube 3-6, limit block 3-7, particle screening member 4, screening baffle 4-1, adjusting column 4-2, spoiler 4-3, notch 4-4, screening gap 5, screening adjustment mechanism 6, adjusting end cover 6-1, adjusting limit block 6-2, flow rate adjustment groove 6-3, connecting sleeve 6-4, flow rate adjustment plate 6-5, spray tank 7, spray head 7-1, installation limit groove 7-2, guide post 7-3, tank body 7-4, installation through hole 7-5, connection groove 7-6, spring 7-7, adjusting limit groove 7-8, air blowing assembly 8, air blowing pipe 8-1, air inlet pipe 8-2, connecting pipe 8-3, piston 8-4, recovery gap 9, guide pipe 10. Detailed implementation manners

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] Embodiment 1

[0034] As Figure 1 - Figure 2 shown, wherein, Figure 1 is a schematic structural diagram of the device in Embodiment 1; Figure 2 is a sectional view of the device in Embodiment 1; Specifically, an anesthetic drug spraying device for atomizing and spraying anesthetic drugs includes: an ultrasonic generator 1, a flow guide cover 2, a screening cover 3, a particle screening member 4, a screening adjustment mechanism 6, and a spray tank 7. Among them, the ultrasonic generator 1, the flow guide cover 2, the screening cover 3, and the particle screening member 4 are respectively arranged in the spray tank 7. The screening adjustment mechanism 6 is rotatably installed on the spray tank 7, and the screening adjustment mechanism 6 is connected to the particle screening member 4 for adjusting the distance between the screening baffle 4-1 and the ultrasonic generator 1; the flow guide cover 2 is sleeved outside the ultrasonic generator 1, and the ultrasonic generator 1 is arranged at the bottom of the spray tank 7 through the flow guide cover 2 for atomizing the anesthetic drug to form fine anesthetic drug particles; the screening cover 3 is arranged above the flow guide cover 2, and a recovery gap 9 is formed between the screening cover 3 and the flow guide cover 2. The anesthetic drug is recovered below the ultrasonic generator 1 through the recovery gap 9. The particle screening member 4 is arranged in the screening cover 3 in a liftable manner, and the fine anesthetic drug particles generated by the ultrasonic generator 1 are screened by the particle screening member 4, so that the anesthetic drug aerosol with smaller particles is output outside the screening cover 3.

[0035] As Figure 7 shown, Figure 7It is a schematic structural diagram of a spray can; specifically, the spray can 7 includes a can body 7-4 and a spray head 7-1. An installation through hole 7-5 is provided on the can body 7-4, and the spray head 7-1 is slidably installed in the installation through hole 7-5. A connection end face is provided on the inner side end face of the spray head 7-1, and a spring 7-7 is provided between the connection end face and the inner wall of the can body 7-4 for driving the spray head 7-1 to move towards the can body 7-4. A connection groove 7-6 is provided on the connection end face, and the connection groove 7-6 is used to connect with the screening cover 3. An installation limit groove 7-2 is further provided on the inner wall of the can body 7-4. The installation limit groove 7-2 and the connection groove 7-6 are located on the same diameter line of the can body 7-4, and the screening cover 3 is fixed through the installation limit groove 7-2 and the connection groove 7-.

[0036] The bottom of the can body 7-4 is tapered. A diversion column 7-3 is provided in the middle of the spray can 7. The diversion column 7-3 is used to divert the liquid to below the ultrasonic generator 1. Preferably, there is a spacing of 0.5-1 mm between the top surface of the diversion column 7-3 and the ultrasonic generator 1. A hydrophobic coating is applied on the inner wall of the bottom of the can body 7-4, a hydrophobic coating is applied on the bottom of the diversion column 7-3, and a hydrophilic coating is applied on the top of the diversion column 7-3 to facilitate diverting the liquid anesthetic drug to the top of the diversion column 7-3, so as to atomize the liquid drug through the ultrasonic generator 1.

[0037] As Figure 4 shown, Figure 4 It is a schematic structural diagram of the screening cover; specifically, the screening cover 3 includes a reflux section 3-3, a connection section 3-4, and an installation section 3-5. Spray nozzles 3-1 and shaft tubes 3-6 are provided on the circumferential side wall of the installation section 3-5. The spray nozzles 3-1 are clamped with the connection groove 7-6, and under the action of the spring 7-7, the spray nozzles 3-1 are abutted against the spray head 7-1. The shaft tubes 3-6 are clamped with the installation limit groove 7-2 to realize the clamping connection between the screening cover 3 and the spray can 7 and prevent the screening cover 3 and the spray can 7 from rotating relative to each other. In this embodiment, both the installation limit groove 7-2 and the connection groove 7-6 are groove-shaped structures with open tops to facilitate installing the screening cover 3 on the can body 7-4 from top to bottom.

[0038] As Figure 2 - Figure 3 shown, Figure 2 It is a cross-sectional view of the device in the first embodiment; Figure 3It is a schematic structural diagram after the ultrasonic generator and the flow deflector are assembled; specifically, a flow deflector ring 2-1 is provided on the flow deflector 2, and the return section 3-3 is sleeved outside the flow deflector ring 2-1. A recovery gap 9 is formed between the return section 3-3 and the flow deflector ring 2-1, so that the atomized drug liquid condensed in the screening cover 3 drips along the return section 3-3 onto the upper end surface of the flow deflector 2. To facilitate the diversion of the condensed anesthetic drug liquid below the ultrasonic generator 1, the upper end surface of the flow deflector ring 2-1 and the upper end surface of the flow deflector 2 are both inclined, and a liquid collecting groove 2-2 is provided on the edge side wall of the flow deflector 2, so that the drug flows to below the ultrasonic generator 1 through the liquid collecting groove 2-2. Preferably, a hydrophobic coating is applied to the side wall of the flow deflector 2.

[0039] As Figure 5 shown, Figure 5 It is a schematic structural diagram of the particle screening member; specifically, the particle screening member 4 includes a screening baffle 4-1, an adjusting column 4-2, and a flow disturbing plate 4-3. The adjusting column 4-2 is connected to the screening adjusting mechanism 6 by a thread. The flow disturbing plate 4-3 and the screening baffle 4-1 are fixed on the adjusting column 4-2. The flow disturbing plate 4-3 is arranged below the screening baffle 4-1. Both the flow disturbing plate 4-3 and the screening baffle 4-1 are located above the ultrasonic generator 1. When the ultrasonic generator 1 atomizes the anesthetic drug, the flow disturbing plate 4-3 is used for disturbing the flow, and the screening baffle 4-1 is used to increase the distance that the atomized drug needs to move out of the screening cover 3, so as to further recover the large-particle atomized drug to the ultrasonic generator 1 and reduce the particle size of the atomized drug output from the screening cover 3.

[0040] As Figure 5 shown, both the flow disturbing plate 4-3 and the screening baffle 4-1 are inclined to drip the condensed anesthetic drug above or below the ultrasonic generator 1; as a preferred implementation manner, the radii of the flow disturbing plate 4-3 and the screening baffle 4-1 are larger than the radius of the flow deflector ring 2-1, so that the condensed anesthetic drug can drip onto the upper end surface of the flow deflector 2 through the recovery gap 9. The condensed anesthetic drug flows into the liquid collecting groove 2-2 along the upper end surface of the flow deflector 2, and then flows to below the ultrasonic generator 1 through the liquid collecting groove 2-2, thereby reducing the condensed anesthetic drug from dripping above the ultrasonic generator 1 and reducing the influence of the condensed anesthetic drug on the atomization effect of the ultrasonic generator 1.

[0041] When the ultrasonic generator 1 atomizes the anesthetic drug, the atomized drug has a certain kinetic energy, driving part of the air around the atomized drug to flow. When the air flows to the spoiler 4-3, the spoiler 4-3 will disturb the gas, causing a certain eddy current to be generated between the ultrasonic generator 1 and the spoiler 4-3. The atomized drug with smaller particles flows above the spoiler 4-3 under the action of the eddy current and then moves above the screening baffle 4-1 through the screening gap 5. For the atomized drug with larger particles, its inertia is larger and the moving distance is larger, so that most of them will adhere to the spoiler 4-3 until they drip; the large-particle atomized drug that does not adhere to the spoiler 4-3 will coagulate with other atomized drug particles after being disturbed by the spoiler 4-3 and fall to the recovery gap 9 or above the ultrasonic generator 1 under the action of its own weight.

[0042] As Figure 2 shown, a screening gap 5 is provided between the screening baffle 4-1 and the screening cover 3. The atomized anesthetic drug moves above the screening baffle 4-1 through the screening gap 5 to facilitate the output of the atomized anesthetic drug outside the screening cover 3. As a preferred embodiment, a notch 4-4 is provided on one side of the screening baffle 4-1. The notch 4-4 is located on the side away from the spray nozzle 3-1. A screening gap 5 is formed between the notch 4-4 and the inner wall of the screening cover 3. When the atomized anesthetic drug moves to the spray nozzle 3-1 through the notch, the anesthetic drug with larger particles will coagulate and then fall into the screening cover 3, thereby further reducing the particle size of the anesthetic drug output from the screening cover 3.

[0043] As Figure 6 、 Figure 8 and Figure 9 shown, Figure 6 is a schematic structural diagram of the screening adjustment mechanism, Figure 8 is a schematic structural diagram of the device in the second embodiment; Figure 9 is Figure 8 a partial enlarged view of the A position in

[0044] When the distance between the particle screening element 4 and the ultrasonic generator 1 decreases, the amount of movement required for the atomized drug to condense on the spoiler 4-3 is smaller, so that most of the atomized drug condenses on the spoiler 4-3, and the atomized drug with finer particles flows to the top of the spoiler 4-3, and then passes through the screening gap 5 and the spray nozzle 3-1 in turn to output the screening cover 3. The efficiency of drug output of this device is low, and the time required for anesthesia is appropriately increased; when the distance between the particle screening element 4 and the ultrasonic generator 1 increases, the amount of movement required for the atomized drug to condense on the spoiler 4-3 increases, so that more atomized drug moves to the top of the spoiler 4-3, thereby increasing the drug particles output from the screening cover 3, improving the efficiency of drug output of this device, and appropriately reducing the time required for anesthesia.

[0045] like Figure 6 and Figure 7 As shown, in order to limit the lifting and lowering adjustment amount of the particle screening component 4, an adjusting limit block 6-2 is provided on the side wall of the adjusting end cover 6-1, and an adjusting limit groove 7-8 is provided on the inner wall of the spray can 7. The adjusting limit block 6-2 is slidably connected with the adjusting limit groove 7-8. The adjusting limit block 6-2 and the adjusting limit groove 7-8 cooperate to limit the rotation angle of the adjusting end cover 6-1, thereby controlling the lifting and lowering amount of the particle screening component 4 within a certain range.

[0046] like Figure 8 and Figure 9 As shown, the screening and adjusting mechanism 6 also includes a flow rate adjusting plate 6-5, which is a baffle. A flow rate adjusting groove 6-3 is provided on the adjusting end cover 6-1. The flow rate adjusting plate 6-5 can be adjusted and arranged on the flow rate adjusting groove 6-3, and the opening area of the flow rate adjusting groove 6-3 is changed by the flow rate adjusting plate 6-5.

[0047] In this embodiment, the flow rate adjustment plate 6-5 is rotatably connected to the adjustment end cover 6-1 through the connecting sleeve 6-4, and the flow rate adjustment plate 6-5 is located above the adjustment end cover 6-1. The opening area of the flow rate adjustment slot 6-3 is changed by manually turning the flow rate adjustment plate 6-5.

[0048] like Figure 2As shown in the figure, a blowing component 8 is provided on the outer side of the spray can 7. The spray nozzle 3-1 is inserted into the spray head 7-1. The blowing component 8 is connected to the spray head 7-1 and is used to blow air at the outlet of the spray head 7-1, thereby reducing the pressure at the spray head 7-1. Under the action of the atmospheric pressure, air flows into the screening cover 3 through the flow rate adjustment groove 6-3, thereby accelerating the atomized drug in the screening cover 3 to be ejected through the spray head 7-1. During the process of changing the opening area of the flow rate adjustment groove 6-3 by the flow rate adjustment plate 6-5, when the opening area of the flow rate adjustment groove 6-3 increases, the air entering the screening cover 3 increases, thereby improving the ejection efficiency of the atomized drug in the screening cover 3 through the spray head 7-1. When the opening area of the flow rate adjustment groove 6-3 decreases, the air entering the screening cover 3 decreases, thereby reducing the ejection efficiency of the atomized drug in the screening cover 3 through the spray head 7-1.

[0049] As Figure 7 shown, in this embodiment, the blowing component 8 includes a blowing pipe 8-1, an air inlet pipe 8-2 and a connecting pipe 8-3. The blowing pipe 8-1 and the air inlet pipe 8-2 are respectively connected to the outer side of the spray can 7. The blowing pipe 8-1 and the air inlet pipe 8-2 are communicated through the connecting pipe 8-3. The blowing pipe 8-1 is sleeved on the outer side of the spray head 7-1, and the blowing pipe 8-1 and the spray head 7-1 are arranged coaxially to prevent the blowing pipe 8-1 from changing the flow direction of the atomized drug output from the spray head 7-1. A piston 8-4 is installed in the air inlet pipe 8-2, and the blowing pipe 8-1 blows air by driving the piston 8-4 to slide. Preferably, the air inlet pipe 8-2 can be directly connected to an external blowing device (such as a blower, a pump) to replace the piston 8-4 to realize the blowing of the blowing pipe 8-1.

[0050] A guiding pipe 10 is rotatably installed on the blowing pipe 8-1 and is used to guide the atomized drug to the part to be anesthetized.

[0051] Embodiment Two

[0052] In this embodiment, the adjustment method of the flow rate adjustment plate 6-5 in Embodiment One is improved. In this embodiment, the flow rate adjustment plate 6-5 is rotatably installed below the adjustment end cover 6-1, and a limiting block 3-7 is provided in the screening cover 3. The limiting block 3-7 abuts against the flow rate adjustment plate 6-5, so that the flow rate adjustment plate 6-5 is relatively fixed to the spray can 7. When the adjustment end cover 6-1 rotates relative to the spray can 7, the flow rate adjustment plate 6-5 adjusts the opening area of the flow rate adjustment groove 6-3.

[0053] As a preferred embodiment, when the distance between the particle screening member 4 and the ultrasonic generator 1 is increased by rotating the adjusting end cap 6-1, the flow rate adjusting plate 6-5 reduces the opening area of the flow rate adjusting groove 6-3, thereby appropriately reducing the efficiency of the device in outputting the coarse-grained drug and reducing the irritation caused by the coarse-grained drug to the patient; when the distance between the particle screening member 4 and the ultrasonic generator 1 is decreased by rotating the adjusting end cap 6-1, the flow rate adjusting plate 6-5 increases the opening area of the flow rate adjusting groove 6-3, thereby appropriately increasing the efficiency of the device in outputting the refined anesthetic drug and improving the anesthetic efficiency.

[0054] The remaining structures are the same as those in the first embodiment.

[0055] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0056] Although more terms corresponding to the reference numerals in the drawings are used herein, the possibility of using other terms is not excluded; these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. An anesthetic drug spraying device for atomizing and spraying anesthetic drugs, characterized in that, Including: An ultrasonic generator (1) for atomizing anesthetic drugs, and a diversion cover (2) for diverting the atomized anesthetic drugs is arranged outside the ultrasonic generator (1); A screening cover (3) is arranged above the diversion cover (2). A recovery gap (9) is formed between the screening cover (3) and the diversion cover (2). The anesthetic drugs are recovered below the ultrasonic generator (1) through the recovery gap (9). A spray nozzle opening (3-1) is provided on the screening cover (3); A particle screening member (4) is arranged in the screening cover (3) in a liftable manner. A screening baffle (4-1) is provided on the particle screening member (4). A screening gap (5) is provided between the screening baffle (4-1) and the screening cover (3). The anesthetic drugs move above the screening baffle (4-1) through the screening gap (5). The screening baffle (4-1) is arranged above the ultrasonic generator (1); A screening adjustment mechanism (6) is connected to the particle screening member (4) and is used to adjust the distance between the screening baffle (4-1) and the ultrasonic generator (1); A spray tank (7) is used to install the ultrasonic generator (1), the screening cover (3), the particle screening member (4), and the screening adjustment mechanism (6). A spray head (7-1) and a blowing component (8) are provided on the spray tank (7). The spray nozzle opening (3-1) is inserted into the spray head (7-1). The blowing component (8) is connected to the spray head (7-1) and is used to blow air at the outlet of the spray head (7-1); The screening adjustment mechanism (6) includes an adjustment end cover (6-1) rotatably installed on the spray tank (7). The particle screening member (4) is rotationally connected to the adjustment end cover (6-1) through a thread. A guide plate (3-2) for guiding the lifting of the particle screening member (4) is provided on the screening cover (3). The adjustment end cover (6-1) and the guide plate (3-2) cooperate to drive the particle screening member (4) to lift; The screening adjustment mechanism (6) further includes a flow rate adjustment plate (6-5). A flow rate adjustment groove (6-3) is provided on the adjustment end cover (6-1). The flow rate adjustment plate (6-5) is rotatably installed below the adjustment end cover (6-1). And a limit block (3-7) is provided in the screening cover (3). The limit block (3-7) abuts against the flow rate adjustment plate (6-5) so that the flow rate adjustment plate (6-5) is relatively fixed to the spray tank (7). When the adjustment end cover (6-1) rotates relative to the spray tank (7), the flow rate adjustment plate (6-5) adjusts the opening area of the flow rate adjustment groove (6-3); When the distance between the particle screening member (4) and the ultrasonic generator (1) is increased by rotating the adjustment end cover (6-1), the flow rate adjustment plate (6-5) reduces the opening area of the flow rate adjustment groove (6-3); when the distance between the particle screening member (4) and the ultrasonic generator (1) is decreased by rotating the adjustment end cover (6-1), the flow rate adjustment plate (6-5) increases the opening area of the flow rate adjustment groove (6-3).

2. The anesthetic drug spraying device according to claim 1, characterized in that, The adjusting end cover (6-1) is provided with an adjusting limit block (6-2), and an adjusting limit groove (7-8) adapted to the adjusting limit block (6-2) is provided on the side wall of the spray can (7). The rotation angle of the adjusting end cover (6-1) is limited by the cooperation of the adjusting limit block (6-2) and the adjusting limit groove (7-8).

3. The anesthetic drug spraying device according to claim 1, characterized in that, An installation limit groove (7-2) is provided in the spray can (7), and the screening cover (3) is installed in the spray can (7) through the installation limit groove (7-2) so that the adjusting end cover (6-1) and the particle screening member (4) rotate relative to each other.

4. The anesthetic drug spraying device according to claim 1, wherein, The particle screening member (4) includes an adjusting column (4-2) and a spoiler (4-3). The adjusting column (4-2) is connected to the screening adjusting mechanism (6) by a thread. The spoiler (4-3) and the screening baffle (4-1) are fixed on the adjusting column (4-2), and the spoiler (4-3) is arranged below the screening baffle (4-1).

5. The anesthetic drug spraying device according to claim 4, characterized in that, Both the spoiler (4-3) and the screening baffle (4-1) are inclined to drip the condensed anesthetic drug above or below the ultrasonic generator (1).

6. The anesthetic drug spraying device according to claim 1, characterized in that, A diversion ring (2-1) is provided on the diversion cover (2). The upper end surface of the diversion ring (2-1) and the upper end surface of the diversion cover (2) are both inclined. A liquid collecting groove (2-2) for diverting the condensed anesthetic drug liquid to below the ultrasonic generator (1) is provided on the side wall of the diversion cover (2).

7. An anesthetic drug spraying device according to claim 1, characterized in that, The air blowing assembly (8) includes a blowing pipe (8-1), an air inlet pipe (8-2) and a connecting pipe (8-3). The blowing pipe (8-1) and the air inlet pipe (8-2) are respectively connected to the outside of the spray can (7). The blowing pipe (8-1) and the air inlet pipe (8-2) are communicated through the connecting pipe (8-3). The blowing pipe (8-1) is sleeved outside the spray head (7-1), and the blowing pipe (8-1) and the spray head (7-1) are coaxially arranged. A piston (8-4) is installed in the air inlet pipe (8-2), and the blowing pipe (8-1) blows air by driving the piston (8-4) to slide.

8. The anesthetic drug spraying device according to claim 1, characterized in that, The bottom of the spray can (7) is conically arranged, and a diversion column (7-3) for diverting the liquid to below the ultrasonic generator (1) is connected in the middle of the spray can (7).

9. The anesthetic drug spraying device according to claim 8, wherein, The inner wall of the bottom of the spray can (7) is coated with a hydrophobic coating. The bottom of the diversion column (7-3) is coated with a hydrophobic coating, and the top of the diversion column (7-3) is coated with a hydrophilic coating.

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