Breathing synchronous ultrasonic airway drug delivery system

Abstract

The utility model discloses a breathing synchronous ultrasonic airway drug delivery system, which comprises a three-way pipe, the three-way pipe comprises a main pipeline and a first bypass port, the main pipeline is connected with an airway catheter, the inlet end of the main pipeline is connected with an oxygen pipe, the outlet end of the main pipeline is connected with an oxygen supply device, and the first bypass port is provided with an ultrasonic drug delivery device. The ultrasonic drug delivery device comprises a sleeve, a first connector and a second connector, wherein one end of the sleeve is closed, and the other end of the sleeve is open and detachably connected to the first connector of the three-way pipe; the ultrasonic atomization sheet is arranged near the opening in the sleeve and is adjacent to the first bypass interface of the three-way pipe; the medicine storage module is arranged in the sleeve and connected to the side, away from the first bypass connector, of the ultrasonic atomization sheet; the ultrasonic atomization sheet is used for atomizing liquid medicine of the medicine storage module and feeding the atomized liquid medicine into a main pipeline of the three-way pipe; the drug delivery system further comprises a power supply module used for supplying power to the ultrasonic atomization sheet. Meanwhile, the expiration phase and the inspiration phase of the patient can be distinguished, medicine is administrated synchronously through the inspiration phase, and the effects of improving the medicine administration efficiency and saving medicine are achieved.

Description

Technical Field

[0001] The utility model patent relates to the field of medical devices, in particular to a respiration-synchronized ultrasonic airway drug delivery system. Background Art

[0002] When using airway management tools (such as tracheal catheters or tracheostomy catheters) to manage a patient's airway, if the patient is unable to perform effective spontaneous breathing (such as respiratory failure, use of muscle relaxants during the perioperative period, etc.), an anesthesia machine or ventilator needs to be used to perform mechanical ventilation on the patient.

[0003] During this process, if the patient needs to administer drugs through the airway for first aid or treatment, one of the commonly used drug delivery methods is to disconnect the breathing circuit of the anesthesia machine and spray the aerosol spray bottle (such as a bronchodilator) through the airway management catheter interface. The problems with this method are that on the one hand, it causes oxygen supply interruption, and on the other hand, due to the disconnection of the breathing circuit and the fact that the artificial airway is longer and narrower than the patient's physiological airway, the patient lacks effective breathing, the air flow velocity is slow, the drug mist is likely to deposit on the inner wall of the catheter, the efficiency of entering the lung tissue is extremely low, and the drug dosage is very small, less than 10%.

[0004] Another method is to generate drug mist through continuous air flow. This method cannot ensure the airtightness of the patient's breathing circuit. At the same time, due to certain requirements for air flow rate, it may cause excessive air flow in the breathing circuit, especially conflicting with the concept of low-flow anesthesia during the perioperative period, resulting in waste of inhaled anesthetic drugs and lung injury to the patient.

[0005] In addition, there are atomization devices on the market that use ultrasonic atomization sheets based on vibrating piezoelectric ceramic meshes, which have many advantages. The liquid storage tank is placed next to the perforated disk (grid). The disk has thousands of precision-molded holes surrounded by piezoelectric materials. Due to the rapid vibration of the piezoelectric ceramic elements, the fluid will be sucked in and atomized through the holes of the disk. The generated droplet size is very uniform, and the suspended aerosol is more easily inhaled into the lungs. However, such atomization devices on the market all operate on a full-time principle and do not distinguish between the patient's exhalation and inhalation phases. The drug mist generated during the patient's exhalation phase cannot enter the airway, and the inhalation-to-exhalation ratio of most patients is 1:1.5 - 1:2, which means that 40% - 60% of the drugs are wasted during this process when using such products. Summary of the Utility Model

[0006] In view of the technical problems raised in the background art, the utility model patent provides a respiration-synchronized ultrasonic airway drug delivery system.

[0007] The utility model patent is implemented by the following specific solutions:

[0008] A breathing synchronized ultrasonic airway drug delivery system, including a three-way tube, the three-way tube includes a main pipeline and a first side interface, the main pipeline is connected to an airway catheter, the inlet end of the main pipeline is connected to an oxygen tube, and the outlet end is connected to an oxygen supply device. Wherein, the first side interface is provided with an ultrasonic drug delivery device, and the ultrasonic drug delivery device includes:

[0009] A sleeve, one end of the sleeve is closed, the other end is open and detachably connected to the first side interface of the three-way tube;

[0010] An ultrasonic atomization sheet, arranged near the opening inside the sleeve and adjacent to the first side interface of the three-way tube;

[0011] A medicine storage module, arranged inside the sleeve and connected to the side of the ultrasonic atomization sheet away from the first side interface;

[0012] The ultrasonic atomization sheet is used to atomize the liquid medicine of the medicine storage module and send it into the main pipeline of the three-way tube;

[0013] The drug delivery system further includes a power supply module for providing power to the ultrasonic atomization sheet.

[0014] In a further preferred embodiment, the medicine storage module is a sponge rod or a medicine storage bag for sucking the liquid medicine. One end of the medicine storage module abuts against the ultrasonic atomization sheet, and the other end abuts against the inner bottom of the sleeve.

[0015] In a further preferred embodiment, a base is provided at the opening of the sleeve, the ultrasonic atomization sheet is arranged on the base, and a communication hole for communicating the inner cavity of the sleeve and the main pipeline of the three-way tube is provided on the base.

[0016] In a further preferred embodiment, the included angle between the axis of the first side interface and the axis of the main pipeline is 20-60 degrees.

[0017] In a further preferred embodiment, the three-way tube further includes a second side interface, and a pressure sensing device is arranged at the second side interface. The pressure sensing device is used to sense the pressure in the main pipeline and control the power supply module to supply power or not supply power to the ultrasonic atomization sheet.

[0018] In a further preferred embodiment, the pressure sensing device includes an outer shell, a conductive piston, a spring, an inner wall insulating layer, a first inner wall conductive layer and a second inner wall conductive layer. One end of the outer shell is open and the other end is closed; the first inner wall conductive layer is electrically connected to the first power supply wire, the second inner wall conductive layer is electrically connected to the second power supply wire, and the pressure sensing device is connected in series with the power supply module and the ultrasonic atomization sheet through the first power supply wire and the second power supply wire.

[0019] A further preferred embodiment is that the inner wall insulating layer, the first inner wall conductive layer, and the second inner wall conductive layer are arranged on the inner side wall of the outer shell. The inner wall insulating layer is circular and arranged on the inner side wall close to the opening side of the outer shell. The first inner wall conductive layer and the second inner wall conductive layer are arranged at intervals on the inner side close to the closed side of the outer shell, and the first inner wall conductive layer and the second inner wall conductive layer are embedded in the longitudinal grooves on the inner side wall of the outer shell. The lower edges of the first inner wall conductive layer and the second inner wall conductive layer are continuous with the upper edge of the circular inner wall insulating layer; one end of the spring abuts or is connected to the conductive piston, and the other end is connected to the closed end of the outer shell; the outer periphery of the conductive piston is in sealed cooperation with the inner wall insulating layer, the first inner wall conductive layer, the second inner wall conductive layer, and the inner side wall of the outer shell, and can reciprocate along the longitudinal axis of the outer shell.

[0020] A further preferred embodiment is that the other end of the spring and the closed end of the outer shell are adjustably connected.

[0021] A further preferred embodiment is that the other end of the spring is connected to an adjusting screw. The adjusting screw is provided with an external thread and passes through the closed end of the outer shell to cooperate with a nut or a knob with an internal thread.

[0022] As an alternative embodiment, a time relay is further included for controlling the power on or off of the ultrasonic atomization sheet.

[0023] The utility model patent provides a perianesthetic ultrasonic airway drug delivery tool with novel structure, convenient use and easy operation, which ensures that the drug mist can be inhaled by the patient in time. At the same time, it can distinguish the exhalation and inhalation phases of the patient, and synchronously administer drugs during inhalation, so as to improve the drug delivery efficiency and save drugs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of an embodiment of the ultrasonic airway drug delivery system protected by the utility model patent;

[0025] Figure 2 It is a schematic structural diagram of the ultrasonic drug delivery device in the ultrasonic airway drug delivery system protected by the utility model patent;

[0026] Figure 3 It is a schematic structural diagram of the air pressure sensing device in the ultrasonic airway drug delivery system protected by the utility model patent;

[0027] Figure 4 It is a curve graph of the pressure change in the breathing circuit of a patient undergoing mechanical ventilation using the ultrasonic airway drug delivery system protected by the utility model patent.

[0028] In the figure: 100 - tee, 101 - main pipeline, 1011 - inlet end, 1012 - outlet end, 102 - first side interface, 103 - second side interface, 200 - ultrasonic drug delivery device, 201 - sleeve, 2011 - inner cavity of the sleeve, 202 - ultrasonic atomization sheet, 203 - drug storage module, 204 - base, 2041 - communication hole, 300 - air pressure sensing device, 301 - outer housing, 302 - conductive piston, 303 - spring, 304 - inner wall insulating layer, 305 - first inner wall conductive layer, 3051 - first power line, 306 - second inner wall conductive layer, 3061 - second power line, 307 - adjusting screw, 308 - nut / knob, 400 - power supply module. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model patent will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model patent. Obviously, the described embodiments are only a part of the embodiments of the present utility model patent, rather than all the embodiments. Based on the embodiments in the present utility model patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model patent.

[0030] Next, the features and exemplary embodiments of various aspects of the present utility model patent will be described in detail. In order to make the purpose, technical solutions and advantages of the present utility model patent clearer, the present utility model patent will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present utility model patent and are not configured to limit the present utility model patent. For those skilled in the art, the present utility model patent can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present utility model patent by showing examples of the present utility model patent.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device including the said elements.

[0032] See Figure 1 As shown, it relates to a respiratory synchronization ultrasonic airway drug delivery system, including a three-way pipe 100, and the three-way pipe 100 includes a main pipeline 101 and a first side interface 102. The main pipeline 101 is connected to an airway catheter (not shown in the figure), the inlet end 1011 of the main pipeline is connected to an oxygen pipe (not shown in the figure), the outlet end 1012 is connected to an oxygen supply device (not shown in the figure), and a ultrasonic drug delivery device 200 is provided at the first side interface 102. Specifically, see Figure 2 As shown, the ultrasonic drug delivery device 200 includes: a sleeve 201, an ultrasonic atomization sheet 202 and a medicine storage module 203. Among them, one end of the sleeve 201 is closed, and the other end is open and detachably connected to the first side interface 102 of the three-way pipe 100; the ultrasonic atomization sheet 202 is arranged near the opening inside the sleeve 201 and is adjacent to the first side interface of the three-way pipe; the medicine storage module 203 is arranged inside the sleeve 201 and is connected to the side of the ultrasonic atomization sheet 202 away from the first side interface 102.

[0033] The above-mentioned ultrasonic atomization sheet 202 is used to atomize the liquid medicine of the medicine storage module 203 through ultrasonic waves and send it into the main pipeline 101 of the three-way pipe 100, and mix it with the oxygen in the main pipeline 101 and send it into the human airway.

[0034] The drug delivery system protected by the present utility model further includes a power supply module 400 for supplying power to the ultrasonic atomization sheet 202.

[0035] Preferably, the above-mentioned medicine storage module 203 is a sponge rod or a medicine storage bag for sucking liquid medicine; further preferably, one end of the medicine storage module 203 abuts against the ultrasonic atomization sheet 202, and the other end abuts against the inner bottom of the sleeve 201 to prevent the medicine storage module 203 from shaking due to the vibration generated by the ultrasonic atomization sheet 202.

[0036] Further preferably, the ultrasonic drug delivery device 200 is detachably connected to the first side interface 102, so as to select or replace the corresponding drug according to the patient's needs. More preferably, the open end of the sleeve 201 of the ultrasonic drug delivery device 200 is connected to the first side interface 102 by means of threads or snap connection.

[0037] Further preferably, the power supply module 400 includes a housing, a circuit board and a battery located inside the housing. The circuit board of the power supply module 400 is connected by a wire to an interface that can be connected to the first side interface 102 of the three-way pipe 100 to achieve detachable connection. Furthermore, the ultrasonic drug delivery device 200 can be used as a disposable consumable standard component, and different patients only need to replace this standard component, while the power supply device can be used for a long time and reused repeatedly.

[0038] Further preferably, for the convenience of installing the ultrasonic atomization sheet 202, a base 204 is provided at the opening of the sleeve 201, and the ultrasonic atomization sheet 202 is arranged on the base 204. More preferably, at least one communication hole 2041 communicating the inner cavity 2011 of the sleeve and the main pipeline 101 of the three-way pipe 100 is provided on the base 204. The communication hole 2041 can balance the air pressure between the inner cavity 2011 of the sleeve and the main pipeline 101, or form a positive pressure from the inner cavity 2011 of the sleeve to the main pipeline 101, which is more conducive to sending the medicine mist atomized by the ultrasonic atomization sheet 202 into the main pipeline 101.

[0039] Further preferably, the included angle between the axis of the first side interface 102 and the axis of the main pipeline 101 is an acute angle, and more preferably the included angle is 20-60 degrees. Since oxygen is supplied from the inlet end 1011 to the outlet end 1012 of the main pipeline 101, the formed oxygen flow can easily send the medicine mist atomized by ultrasonic into the airway, and the medicine mist is not easily attached to the inner wall of the main pipeline 101. In particular, it can avoid the concentrated attachment of the medicine mist on the inner wall of the main pipeline 101 opposite to the ultrasonic atomization sheet 202, greatly improving the feeding efficiency of the medicine mist.

[0040] In a further preferred embodiment, a pressure sensing device 300 is added in this embodiment. The three-way pipe 100 further includes a second side interface 103. An air hole is provided in the second side interface 103, and the pressure sensing device 300 is arranged in the second side interface 103. The pressure sensing device 300 is used to sense the pressure in the main pipeline 101 and control the power supply module 400 to supply power or not supply power to the ultrasonic atomization sheet 202.

[0041] Specifically, the pressure sensing device 300 includes an outer shell 301, a conductive piston 302, a spring 303, an inner wall insulating layer 304, a first inner wall conductive layer 305 and a second inner wall conductive layer 306. Preferably, the outer shell 301 is made of insulating material, one end of the outer shell 301 is open and the other end is closed; the first inner wall conductive layer 305 is electrically connected to the first power line 3051, and the second inner wall conductive layer 306 is electrically connected to the second power line 3061. The pressure sensing device 300 is connected in series with the power supply module 400 and the ultrasonic atomization sheet 202 through the first power line 3051 and the second power line 3061.

[0042] Further, the inner wall insulating layer 304, the first inner wall conductive layer 305, and the second inner wall conductive layer 306 are arranged on the inner side wall of the outer casing 301. The inner wall insulating layer 304 is circular and is arranged close to the inner side wall of the opening side of the outer casing 301. The first inner wall conductive layer 305 and the second inner wall conductive layer 306 are arranged at intervals close to the inner side of the closed side of the outer casing 301, and the first inner wall conductive layer 305 and the second inner wall conductive layer 306 are embedded in the longitudinal grooves on the inner side wall of the outer casing 301. The lower edges of the first inner wall conductive layer 305 and the second inner wall conductive layer 306 are continuous with the upper edge of the circular inner wall insulating layer 304. One end of the spring 303 abuts or is connected to the conductive piston 302, and the other end is connected to the closed end of the outer casing 301. The outer periphery of the conductive piston 302 is in sealed cooperation with the inner wall insulating layer 304, the first inner wall conductive layer 305, the second inner wall conductive layer 306, and the inner side wall of the outer casing 301, and can reciprocate along the longitudinal axis of the outer casing 301.

[0043] Due to the different compliance of different patients, the influencing factors include whether the patient is obese, the elasticity of the lung tissue, tracheal secretions, the thickness of the tracheal catheter, etc. Therefore, the basic airway pressure is also different. In a further preferred embodiment, a pressure regulating device is also provided in the air pressure sensing device 300. Specifically, the other end of the spring 303 and the closed end of the outer casing 301 are adjustably connected. Further preferably, the other end of the spring 303 is connected to an adjusting screw 307. The adjusting screw 307 is provided with an external thread and passes through the top of the closed end of the outer casing 301 to cooperate with a nut or an internally threaded knob 308. In this way, by rotating the adjusting screw 307 or the nut / knob 308, the position of the conductive piston 302 in the up and down direction can be adjusted to set the initial state value of the air pressure sensing device 300 according to the compliance of the above different patients. That is, when the airway pressure rises to a certain value, such as 6-8 cmH2O, the control circuit of the air pressure sensing device 300 is connected, and the ultrasonic atomizing sheet 202 is started to send the medicine mist during the patient's inhalation.

[0044] The working principle of the air pressure sensing device 300 is that when the patient is in the expiratory phase, the air pressure in the main pipeline 101 is relatively low. Under the elastic force of the spring 303, the conductive piston 302 is pushed downward. At this time, the conductive piston 302 contacts the inner wall insulating layer 304, and the power supply circuit is in the off state. The ultrasonic atomizing sheet 202 does not work and no medicine mist is generated. When in the inspiratory phase, mechanical ventilation actively supplies oxygen, the air pressure in the main pipeline 101 is relatively high, and the conductive piston 302 is pushed upward to make it conductively connected to the first inner wall conductive layer 305 and the second inner wall conductive layer 306. The power supply module 400 supplies power to the ultrasonic atomizing sheet 202 to generate medicine mist and send it into the main pipeline, and the medicine mist is sent in while the patient inhales.

[0045] During the entire mechanical ventilation respiratory cycle, the pressure and the on / off time of the circuit in the respiratory circuit are asFigure 4 as shown Figure 4 In the figure, the ordinate is the airway pressure and the abscissa is the time. During the inhalation phase, the airway pressure in the breathing circuit suddenly increases and then gradually enters a plateau phase, reaching a peak at the end of inhalation (patients with incomplete loss of spontaneous breathing function will generate the trigger as shown in the figure). When entering the exhalation phase, the pressure in the breathing circuit suddenly drops and remains at a low level until the start of the next breathing cycle. Therefore, the user can adjust the pressure sensing switch according to the specific situation of the patient. When the airway pressure in the breathing circuit exceeds the set pressure line, the pressure sensing switch is turned on, the circuit energizes the atomizing device to start, so as to achieve personalized settings for the patient.

[0046] As an alternative embodiment, the above-mentioned air pressure sensing device 300 is replaced by a time relay (not shown in the figure), and the time relay controls the power on or off of the ultrasonic atomizing sheet. This method is applicable to patients who have completely lost their spontaneous breathing. By controlling the power supply module 400 to power on or off the ultrasonic atomizing sheet through the time relay, the effect of synchronization with breathing can be achieved.

[0047] It should be clear that the patent of the present utility model is not limited to the above embodiments. Without conflict, the above embodiments can be combined to form new embodiments, all of which fall within the protection scope of the patent of the present utility model. The patent of the present utility model is not limited to the specific structure and process described above and shown in the figure. For the sake of brevity, the detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the patent of the present utility model is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications and additions, or change the order between steps after understanding the spirit of the patent of the present utility model.

[0048] It should also be noted that the exemplary embodiments mentioned in the patent of the present utility model describe some methods or systems based on a series of steps or devices. However, the patent of the present utility model is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps can be executed simultaneously.

[0049] The above is only the specific implementation manner of the patent of the present utility model. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules and units can refer to the corresponding processes in the foregoing method embodiments and will not be repeated here. It should be understood that the protection scope of the patent of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the patent of the present utility model can easily think of various equivalent modifications or replacements, and these modifications or replacements should all be covered by the protection scope of the patent of the present utility model.

Claims

1. A breathing synchronized ultrasonic airway drug delivery system, comprising a three-way pipe, wherein the three-way pipe comprises a main line and a first side port, wherein the main line is connected to an airway catheter, wherein the inlet end of the main line is connected to an oxygen pipe, and the outlet end is connected to an oxygen supply device, wherein: The first side port is provided with an ultrasonic drug delivery device, and the ultrasonic drug delivery device comprises: A sleeve, one end of which is closed and the other end of which is open and detachably connected to the first side interface of the tee pipe; An ultrasonic atomizing sheet is arranged near the opening in the sleeve and close to the first side interface of the three-way pipe; The medicine storage module is arranged in the sleeve and connected to a side of the ultrasonic atomization sheet away from the first side interface; The ultrasonic atomizer is used to atomize the liquid medicine in the medicine storage module and send it into the main pipe of the three-way pipe; The drug delivery system also includes a power supply module for providing power to the ultrasonic atomization sheet.

2. The ultrasonic airway drug delivery system according to claim 1, characterized in that: The medicine storage module is a sponge stick or medicine storage bag for absorbing medicine liquid. One end of the medicine storage module abuts against the ultrasonic atomization sheet, and the other end abuts against the bottom of the sleeve.

3. The ultrasonic airway drug delivery system according to claim 1, characterized in that: A base is provided at the opening of the sleeve, the ultrasonic atomizing sheet is arranged on the base, and a connecting hole connecting the inner cavity of the sleeve and the main line of the three-way pipe is provided on the base.

4. The ultrasonic airway drug delivery system according to claim 1, characterized in that: The included angle between the axis of the first bypass port and the axis of the main pipeline is 20-60 degrees.

5. The ultrasonic airway drug delivery system according to claim 1, characterized in that: The three-way pipe also includes a second side interface, and an air pressure sensing device is arranged at the second side interface. The air pressure sensing device is used to sense the pressure in the main circuit and control the power supply module to supply power or not to supply power to the ultrasonic atomization sheet.

6. The ultrasonic airway drug delivery system according to claim 5, characterized in that: The air pressure sensing device includes an outer shell, a conductive piston, a spring, an inner wall insulating layer, a first inner wall conductive layer and a second inner wall conductive layer, wherein one end of the outer shell is open and the other end is closed; the first inner wall conductive layer is conductively connected to the first power line, and the second inner wall conductive layer is conductively connected to the second power line. The air pressure sensing device is connected in series with the power supply module and the ultrasonic atomizer through the first power line and the second power line.

7. The ultrasonic airway drug delivery system according to claim 6, characterized in that: The inner wall insulating layer, the first inner wall conductive layer, and the second inner wall conductive layer are arranged on the inner wall of the outer shell, the inner wall insulating layer is annular and is arranged on the inner wall close to the opening side of the outer shell, the first inner wall conductive layer and the second inner wall conductive layer are arranged at intervals on the inner side close to the closed side of the outer shell, and the first inner wall conductive layer and the second inner wall conductive layer are embedded in the inner wall of the outer shell in the longitudinal groove, and the lower edges of the first inner wall conductive layer and the second inner wall conductive layer are continuous with the upper edge of the annular inner wall insulating layer; one end of the spring is abutted or connected to the conductive piston, and the other end is connected to the closed end of the outer shell; the outer periphery of the conductive piston is sealed with the inner wall insulating layer, the first inner wall conductive layer, the second inner wall conductive layer, and the inner wall of the outer shell, and can reciprocate along the longitudinal axis of the outer shell.

8. The ultrasonic airway drug delivery system according to claim 7, characterized in that: The other end of the spring is adjustably connected to the closed end of the outer shell.

9. The ultrasonic airway drug delivery system according to claim 8, characterized in that: The other end of the spring is connected with an adjusting screw rod, which is provided with an external thread and passes through a closed end of the outer shell to cooperate with a nut or a knob with an internal thread.

10. The ultrasonic airway drug delivery system according to claim 1, characterized in that: It also includes a time relay for controlling the power on or off of the ultrasonic atomizer.

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