CN112190797B - Department of anesthesia uses narcotic drug atomizer - Google Patents
Department of anesthesia uses narcotic drug atomizer Download PDFInfo
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- CN112190797B CN112190797B CN202011195889.5A CN202011195889A CN112190797B CN 112190797 B CN112190797 B CN 112190797B CN 202011195889 A CN202011195889 A CN 202011195889A CN 112190797 B CN112190797 B CN 112190797B
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- storage tank
- liquid storage
- atomizing
- peristaltic pump
- amplitude transformer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0638—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
- A61M11/005—Sprayers or atomisers specially adapted for therapeutic purposes using ultrasonics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M19/00—Local anaesthesia; Hypothermia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1025—Respiratory system
- A61M2210/1032—Trachea
Abstract
The invention relates to an anesthetic spraying device for an anesthesia department, which comprises a peristaltic pump and a spraying mechanism connected with the peristaltic pump, wherein the input end of the peristaltic pump is connected with a liquid supplementing bottle, the output end of the peristaltic pump is connected with the spraying mechanism, the spraying mechanism comprises a liquid storage tank, an atomizing structure and an amplitude transformer which are sequentially connected, the amplitude transformer is connected with the bottom end of the liquid storage tank through a flange plate, the atomizing structure is hermetically connected between one side of the flange plate, far away from the amplitude transformer, and the bottom end face of the liquid storage tank, and comprises an atomizing sheet and piezoelectric ceramics; according to the spraying device provided by the invention, the excitation circuit generated by the resonator excites the square wave of the resonant frequency generated by the atomizing structure to act on the spraying mechanism, and the liquid in the liquid storage tank can drive the peristaltic pump to supplement the liquid in real time through the driving circuit besides the solution stored in the liquid storage tank, so that the liquid in the liquid storage tank is continuously extruded from the amplitude transformer to form fog particles.
Description
Technical Field
The invention belongs to the technical field of anesthesia equipment, and particularly relates to an anesthetic spraying device for an anesthesia department.
Background
At present, the airway mucosa surface anesthesia is implemented by using a classical laryngeal sprayer and spraying surface anesthetic, and the sprayer can only spray to the pharyngeal cavity through the nasal cavity outer opening and the oral cavity, so that the airway surface anesthesia can be implemented in a very limited range and is limited to the nasal cavity, the oral cavity and the pharyngeal portion, and medical personnel are required to operate the sprayer for many times.
At present, a spraying pot for oral cavity, throat and trachea inner surface anesthesia is mainly characterized in that a large conical glass bottle is used as a medicine container, surface anesthesia liquid medicine is directly injected into the container, and an external metal nozzle sprays the medicine from the nozzle by utilizing the siphon action. The watering can that uses at present, because spun surface anesthetic becomes thin water column, cause surface anesthetic maldistribution easily, seriously influence the anesthesia effect, cause the acutely to choke easily, thereby influence the security medicine of air flue intervention treatment and need take out the back and pour into the container in the side and use, increase medicine pollution chance and patient's respiratory infection chance, the bottle is bulky, use more than 20ml liquid medicine at every turn, can use, and the actual use amount generally does not exceed 5ml, the medicine is extravagant serious.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides an anesthetic spraying device for an anesthesia department.
The purpose of the invention is realized by the following steps:
the utility model provides an department of anesthesia is with anesthesia medicine atomizer, includes peristaltic pump and the medicine spraying mechanism who connects the peristaltic pump, the input of peristaltic pump is connected with the fluid infusion bottle, the output of peristaltic pump is connected to spouts medicine mechanism, spout medicine mechanism including connect gradually, be reservoir, atomizing structure and the change width of cloth pole of sandwich structure, be equipped with the inlet of connecting the peristaltic pump on the lateral wall of reservoir, the top of reservoir is equipped with the cover plate of sealed reservoir, change the bottom that the width of cloth pole passes through the ring flange and connects the reservoir, sealing connection atomizing structure between the bottom face of one side that the flange kept away from the change width of cloth pole and reservoir, atomizing structure includes atomizing piece and piezoceramics, the central authorities department of atomizing piece has the micropore portion, the outer fringe of atomizing piece, the periphery of micropore portion are connected with piezoceramics to the centre gripping.
Preferably, the peristaltic pump is connected to an external dc power supply through a drive circuit, the external dc power supply being connected to the piezoelectric ceramic through the resonator.
Preferably, the liquid storage tank is of a cylindrical structure with a cavity, the cover plate is connected with the top end of the liquid storage tank through a sealing ring, and the cover plate is fixedly connected with the liquid storage tank through a cross screw.
Preferably, both sides face of the atomization structure are respectively connected with the bottom end of the liquid storage tank and the upper surface of the flange plate in a sealing mode through sealing rings, and the flange plate is fixedly connected to the bottom end of the liquid storage tank through cross screws.
Preferably, the amplitude transformer is bolted to the flange plate, the amplitude transformer comprises a large pole and a small pole, one end of the large pole is bolted to the flange plate, the other end of the large pole is in arc transition connection with the small pole, and the large pole and the small pole are in a stepped shape.
Preferably, one end of the small rod, which is far away from the large rod, is connected with a spray head, the spray head is provided with a conical spray hole, and the included angle of the conical surface of the spray hole is 15-72 degrees.
Preferably, the liquid storage tank, the atomization structure and the axis of the amplitude transformer are arranged in a superposition mode.
Preferably, the liquid storage tank, the flange plate and the cover plate are all made of 45# steel, and the amplitude transformer is made of aluminum.
Preferably, the piezoelectric ceramic is of a PZT-4 type, and the density rho of the piezoelectric ceramic is 7.2-7.8 multiplied by 103kg/m3The elastic modulus E of the piezoelectric ceramic is 6.8-7.5kPa, the Poisson ratio upsilon of the piezoelectric ceramic is 0.1-0.3, and the diameter R of the piezoelectric ceramic is 18-22 mm.
Preferably, E.R (E + R)/rho upsilon is more than 14.8 and less than or equal to 36.4 among the density rho, the elastic modulus E, the Poisson ratio upsilon and the diameter R of the piezoelectric ceramic.
Preferably, the aperture of the micropore part is 3-8 μm, the diameter of the fog particles sprayed by the spray head is 2-10 μm, and the flow speed of the fog particles is 0.1-0.5 ml/min.
Preferably, the atomization plate is a circular thin plate, and the bending rigidity D of the atomization plate satisfies the following conditions:
D=E2h2/3r2/（1-σ2），E2is the atomizing plate elastic modulus (kPa), h is the atomizing plate thickness (mm), σ is the atomizing plate Poisson's ratio, and r is the atomizing plate radius (mm).
Compared with the prior art, the invention has the beneficial effects that:
1. according to the anesthetic spraying device for the anesthesia department, the square wave of the resonant frequency generated by the excitation circuit generated by the resonator exciting the atomization structure acts on the spraying mechanism, and the liquid in the liquid storage tank can drive the peristaltic pump to supplement the liquid in real time through the driving circuit besides the stored solution.
2. According to the anesthesia medicine spraying device for the anesthesia department, the liquid storage tank and the atomization structure form the ultrasonic piezoelectric transduction structure, and the vibration mode in the thickness direction of the atomization sheet is utilized, so that the mechanical-electrical coupling coefficient is high during work, and the electromechanical conversion efficiency is high.
3. According to the anesthetic spraying device for the anesthesia department, the sealing ring can prevent water leakage and apply certain pretightening force to the atomizing sheet, so that the stability of an atomizing structure is better, and the service life is prolonged.
4. According to the anesthetic spraying device for the anesthesia department, the atomization structure, the flange plate and the amplitude transformer influence the resonance frequency of the ultrasonic atomization nozzle, the nozzle reaches the amplitude peak value on the front end face of the atomization sheet, and the amplitude can enable continuous liquid to be effectively broken into liquid drops, so that liquid atomization is realized, and the requirements of inhalation type medication on the atomization flow rate and the diameter of atomized particles are met.
Drawings
Fig. 1 is a schematic structural view of an anesthetic spraying device for an anesthesia department.
Fig. 2 is a schematic view of a spraying mechanism of an anesthetic spraying device for an anesthesia department.
Fig. 3 is a schematic diagram of an atomization structure of an anesthetic spraying device for an anesthesia department.
Fig. 4 is a schematic view of a horn of an anesthetic spraying apparatus for anesthesia department of the present invention.
In the figure: 1. a peristaltic pump; 2. a liquid supplement bottle; 3. a pesticide spraying mechanism; 4. a resonator; 5. a liquid storage tank; 6. a liquid inlet; 7. a cover sheet; 8. a seal ring; 9. an atomizing structure; 91. an atomizing sheet; 92. piezoelectric ceramics; 93. a microporous portion; 10. a flange plate; 11. an amplitude transformer; 111. a large pole; 112. a small rod; 113. and (4) a spray head.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
With reference to fig. 1, an anesthetic spraying device for department of anesthesia comprises a peristaltic pump 1 and a medicine spraying mechanism 3 connected with the peristaltic pump 1, wherein an input end of the peristaltic pump 1 is connected with a liquid replenishing bottle 2, an output end of the peristaltic pump 1 is connected to the medicine spraying mechanism 3, the peristaltic pump 1 is connected with an external direct-current power supply through a driving circuit, and the external direct-current power supply is connected with the medicine spraying mechanism 3 through a resonator 4.
The pesticide spraying mechanism 3 comprises a liquid storage tank 5, an atomizing structure 9 and an amplitude transformer 11 which are connected in sequence and are of a sandwich structure, a liquid inlet 6 connected with the peristaltic pump 1 is formed in the side wall of the liquid storage tank 5, a cover plate 7 for sealing the liquid storage tank 5 is arranged at the top end of the liquid storage tank 5, the amplitude transformer 11 is connected with the bottom end of the liquid storage tank 5 through a flange plate 10, the atomizing structure 9 is connected between one side, away from the amplitude transformer 11, of the flange plate 10 and the bottom end face of the liquid storage tank 5 in a sealing mode, the atomizing structure 9 comprises an atomizing plate 91 and piezoelectric ceramics 92, a micro-hole part 93 is formed in the center of the atomizing plate 91, and the piezoelectric ceramics 92 is clamped and connected to the outer edge of the atomizing plate 91 and the outer periphery of the micro-hole part 93.
The square wave of the resonance frequency generated by the atomizing structure 9 excited by the exciting circuit generated by the resonator 4 acts on the medicine spraying mechanism 3, and the liquid in the liquid storage tank 5 can drive the peristaltic pump 1 to supplement liquid in real time through the driving circuit besides the solution stored in the liquid storage tank.
The peristaltic pump who adopts is step motor, compares in direct current motor, and control accuracy is high, job stabilization, and the rotation of accessible motor constantly extrudees the hose, and the negative pressure that produces can carry liquid as required, adopts 5V 113 KHz's excitation circuit to provide steady voltage and operating frequency for atomizing structure 9.
Example 2
With reference to fig. 1-3, an anesthetic spraying device for anesthesia department comprises a peristaltic pump 1 and a spraying mechanism 3 connected with the peristaltic pump 1, wherein an input end of the peristaltic pump 1 is connected with a liquid replenishing bottle 2, an output end of the peristaltic pump 1 is connected to the spraying mechanism 3, the peristaltic pump 1 is connected to an external direct current power supply through a driving circuit, and the external direct current power supply is connected to a piezoelectric ceramic 92 through a resonator 4.
The pesticide spraying mechanism 3 comprises a liquid storage tank 5, an atomizing structure 9 and an amplitude transformer 11 which are connected in sequence and are of a sandwich structure, a liquid inlet 6 connected with the peristaltic pump 1 is arranged on the side wall of the liquid storage tank 5, a cover plate 7 for sealing the liquid storage tank 5 is arranged at the top end of the liquid storage tank 5, the liquid storage tank 5 is of a cylindrical structure with a cavity, the cover plate 7 is connected with the top end of the liquid storage tank 5 through a sealing ring 8, the cover plate 7 is fixedly connected with the liquid storage tank 5 through a cross screw, the amplitude transformer 11 is connected with the bottom end of the liquid storage tank 5 through a flange plate 10, the atomizing structure 9 is connected between one side of the flange plate 10 far away from the amplitude transformer 11 and the bottom end surface of the liquid storage tank 5 in a sealing manner, the atomizing structure 9 comprises an atomizing plate 91 and piezoelectric ceramics 92, a micro-hole part 93 is arranged at the center of the atomizing plate 91, and piezoelectric ceramics 92 are clamped and connected to the outer edge of the atomizing plate 91 and the outer circumference of the micro-hole part 93, the two side surfaces of the atomizing structure 9 are respectively connected with the bottom end of the liquid storage tank 5 and the upper surface of the flange plate 10 in a sealing mode through a sealing ring 8, the flange plate 10 is fixedly connected to the bottom end of the liquid storage tank 5 through a cross screw, the liquid storage tank 5, the atomizing structure 9 and the amplitude transformer 11 are arranged in an axle center overlapping mode, the liquid storage tank 5 and the atomizing structure 9 form an ultrasonic piezoelectric transduction structure, and the electric coupling coefficient is high during work and the electromechanical conversion efficiency is high by utilizing the vibration mode of the atomizing sheet 91 in the thickness direction.
The piezoelectric ceramic 92 is a PZT-4 type with low mechanical loss and excellent performance, in order to obtain a larger front-back vibration velocity ratio, reduce energy consumption and improve the forward radiation efficiency of a sound field, the cover plate 7 and the amplitude transformer 11 are made of aluminum, and the liquid storage tank 5 and the flange plate 10 are made of 45# steel.
The ring flange 10 mainly has two effects, firstly, play the effect of connecting other parts, secondly effectively stop the place ahead liquid refluence, the thickness of ring flange 10 is thinner, just the less is the influence to atomizing nozzle resonant frequency, the diameter of selecting the ring flange is 50mm, thickness is 2mm, cross screw with M3 couples together ring flange 10 and amplitude transformer 11, sealing washer 8 both can prevent to leak, can apply some pretightning force for atomizing piece 91 again, make atomizing structure 9's stability better, improve life.
Example 3
With reference to fig. 1-4, an anesthetic spraying device for anesthesia department comprises a peristaltic pump 1 and a spraying mechanism 3 connected with the peristaltic pump 1, wherein an input end of the peristaltic pump 1 is connected with a liquid replenishing bottle 2, an output end of the peristaltic pump 1 is connected to the spraying mechanism 3, the peristaltic pump 1 is connected to an external direct current power supply through a driving circuit, and the external direct current power supply is connected to a piezoelectric ceramic 92 through a resonator 4.
The pesticide spraying mechanism 3 comprises a liquid storage tank 5, an atomizing structure 9 and an amplitude transformer 11 which are connected in sequence and have a sandwich structure, a liquid inlet 6 connected with the peristaltic pump 1 is arranged on the side wall of the liquid storage tank 5, a cover plate 7 for sealing the liquid storage tank 5 is arranged at the top end of the liquid storage tank 5, the cover plate 7 is connected with the top end of the liquid storage tank 5 through a sealing ring 8, the cover plate 7 is fixedly connected with the liquid storage tank 5 through a cross screw, the amplitude transformer 11 is connected with the bottom end of the liquid storage tank 5 through a flange plate 10, the atomizing structure 9 is connected between one side of the flange plate 10 far away from the amplitude transformer 11 and the bottom end face of the liquid storage tank 5 in a sealing way, the atomizing structure 9 comprises an atomizing sheet 91 and piezoelectric ceramics 92, a micro-hole part 93 is arranged at the center of the atomizing sheet 91, and the piezoelectric ceramics 92 is clamped and connected to the outer edge of the atomizing sheet 91 and the outer periphery of the micro-hole part 93, the two side surfaces of the atomizing structure 9 are respectively connected with the bottom end of the liquid storage tank 5 and the upper surface of the flange plate 10 in a sealing mode through a sealing ring 8, the flange plate 10 is fixedly connected to the bottom end of the liquid storage tank 5 through a cross screw, the axes of the liquid storage tank 5, the atomizing structure 9 and the amplitude transformer 11 are arranged in a superposed mode, and the liquid storage tank 5 and the atomizing structure 9 form an ultrasonic piezoelectric transduction structure.
The variable-amplitude rod 11 is connected to the flange plate 10 through bolts, the variable-amplitude rod 11 comprises a large rod 111 and a small rod 112, one end of the large rod 111 is connected to the flange plate 10 through bolts, the other end of the large rod 111 is connected with the small rod 112 in an arc transition mode, the large rod 111 and the small rod 112 are in a stepped mode, one end, far away from the large rod 111, of the small rod 112 is connected with a spray head 113, a conical spray hole is formed in the spray head 113, and the included angle of the conical surface of the spray hole is 40 degrees.
The output of spouting medicine mechanism 3 increases amplitude transformer 11, amplitude transformer 11 has the amplification function, can increase the amplitude of spouting the 3 front ends of medicine mechanism, compensate the less not enough of the produced amplitude of spouting medicine mechanism 3 self, still have the mechanical impedance effect, amplitude transformer 11 can also promote the transmission of ultrasonic energy, make and to realize more suitable coupling between reservoir 5 and the atomizing piece 91, reduce energy loss, amplitude transformer 11 can also concentrate energy, make the energy concentrate on less area more, the atomizing effect of reinforcing supersound.
Example 4
The piezoelectric ceramic adopts a PZT-4 type, and the density rho of the piezoelectric ceramic is 7.2-7.8 multiplied by 103kg/m3The elastic modulus E of the piezoelectric ceramic is 6.8-7.5kPa, the Poisson ratio upsilon of the piezoelectric ceramic is 0.1-0.3, the diameter R of the piezoelectric ceramic is 18-22mm, and the density rho, the elastic modulus E, the Poisson ratio upsilon and the diameter R of the piezoelectric ceramic meet the condition that E.R (E + R)/rho upsilon is larger than 14.8 and smaller than or equal to 36.4.
The atomizing piece adopts circular thin slice, the bending rigidity D of atomizing piece satisfies: d = E2h2/3r2/（1-σ2），E2Is the atomizing plate elastic modulus (kPa), h is the atomizing plate thickness (mm), σ is the atomizing plate Poisson's ratio, and r is the atomizing plate radius (mm).
The atomization structure, the flange plate and the amplitude transformer all influence the resonant frequency of the ultrasonic atomization nozzle, the nozzle reaches an amplitude peak value on the front end face of the atomization sheet, and the amplitude can enable continuous liquid to be effectively broken into liquid drops, so that liquid atomization is realized, and the requirements of inhalation type drug therapy on the atomization flow rate and the diameter of atomized particles are met.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents and substitutions made within the scope of the present invention should be included.
Claims (7)
1. The utility model provides an anesthesia medicine atomizer for department of anesthesia which characterized in that: the device comprises a peristaltic pump (1) and a medicine spraying mechanism (3) connected with the peristaltic pump (1), wherein the input end of the peristaltic pump (1) is connected with a liquid replenishing bottle (2), the output end of the peristaltic pump (1) is connected with the medicine spraying mechanism (3), the medicine spraying mechanism (3) comprises a liquid storage tank (5), an atomizing structure (9) and an amplitude transformer (11) which are sequentially connected and have a sandwich structure, a liquid inlet (6) connected with the peristaltic pump (1) is formed in the side wall of the liquid storage tank (5), a cover plate (7) for sealing the liquid storage tank (5) is arranged at the top end of the liquid storage tank (5), the amplitude transformer (11) is connected with the bottom end of the liquid storage tank (5) through a flange (10), the atomizing structure (9) is hermetically connected between one side of the flange (10) far away from the amplitude transformer (11) and the bottom end face of the liquid storage tank (5), and the atomizing structure (9) comprises an atomizing plate (91) and piezoelectric ceramics (92), the center of the atomizing sheet (91) is provided with a micro-hole part (93), and the outer edge of the atomizing sheet (91) and the outer periphery of the micro-hole part (93) are clamped and connected with piezoelectric ceramics (92);
the atomization sheet (91) is a circular thin sheet, and the bending rigidity D of the atomization sheet meets the following requirements: d = E2h2/3r2/（1-σ2），E2Is the elastic modulus of the atomizing sheet (91), the unit of the elastic modulus is kPa, h is the thickness of the atomizing sheet (91), the unit of the thickness is mm, sigma is the Poisson's ratio of the atomizing sheet (91), r is the radius of the atomizing sheet (91), and the unit of the radius is mm;
the piezoelectric ceramic adopts a PZT-4 type, and the density rho of the piezoelectric ceramic is 7.2-7.8 multiplied by 103kg/m3The elastic modulus E of the piezoelectric ceramic is 6.8-7.5kPa, the Poisson ratio upsilon of the piezoelectric ceramic is 0.1-0.3, the diameter R of the piezoelectric ceramic is 18-22mm, and the density p, the elastic modulus E, the Poisson ratio upsilon and the diameter R of the piezoelectric ceramic meet the condition that E.R (E + R)/p upsilon is more than 14.8 and less than or equal to 36.4.
2. The anesthetic spraying apparatus for anesthesia department as claimed in claim 1, wherein: the peristaltic pump (1) is connected to an external direct current power supply through a drive circuit, and the external direct current power supply is connected to the piezoelectric ceramic (92) through the resonator (4).
3. The anesthetic spraying apparatus for anesthesia department as claimed in claim 1, wherein: the liquid storage tank (5) is of a cylindrical structure with a cavity, the cover plate (7) is connected with the top end of the liquid storage tank (5) through a sealing ring (8), and the cover plate (7) is fixedly connected with the liquid storage tank (5) through a cross screw.
4. The anesthetic spraying apparatus for anesthesia department as claimed in claim 1, wherein: the two side surfaces of the atomization structure (9) are respectively connected with the bottom end of the liquid storage tank (5) and the upper surface of the flange plate (10) in a sealing mode through a sealing ring (8), and the flange plate (10) is fixedly connected to the bottom end of the liquid storage tank (5) through a cross screw.
5. The anesthetic spraying apparatus for anesthesia department as claimed in claim 1, wherein: the amplitude transformer (11) is connected to the flange plate (10) through bolts, the amplitude transformer (11) comprises a large rod (111) and a small rod (112), one end of the large rod (111) is connected to the flange plate (10) through bolts, the other end of the large rod (111) is connected with the small rod (112) in an arc transition mode, and the large rod (111) and the small rod (112) are in a stepped mode.
6. The anesthetic spraying apparatus for anesthesia department of claim 5, wherein: one end of the small rod (112) far away from the large rod (111) is connected with a spray head (113), a conical spray hole is formed in the spray head (113), and the included angle of the conical surface of the spray hole is 15-72 degrees.
7. The anesthetic spraying apparatus for anesthesia department as claimed in claim 1, wherein: the axes of the liquid storage tank (5), the atomizing structure (9) and the amplitude transformer (11) are superposed.
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