Inhalation drug delivery device for respiration and critical disease medicine department

Abstract

The invention belongs to the technical field of medical instruments, and discloses an inhalation administration device for respiration and critically ill medical departments, which comprises an administration bottle body and a medicine storage bottle body, the medicine storage bottle body contains liquid medicine required by inhalation administration, the administration bottle body is connected with a mask, a pressurizing assembly and a liquid drawing assembly, the pressurizing assembly comprises a box body and a driving part, and the driving part is connected with the box body. A pressurizing cavity is formed in the inner side of the box body, a pair of pressurizing gears are connected to the inner side of the pressurizing cavity, the liquid drawing assembly comprises a liquid drawing barrel and atomization equipment, the liquid drawing barrel is connected with a piston and a spring, and the mask communicates with a medicine guide pipe and an expiration pipe. The pressurizing assembly is used for pressurizing gas exhaled by a patient, the liquid drawing assembly is used for drawing liquid medicine needed by inhalation and administration, during expiration, the piston exhausts gas in the liquid drawing barrel, during inhalation, the piston moves reversely under the action of the spring to draw the liquid medicine, administration is achieved through the medicine guide pipe, the administration efficiency is high, and the administration effect is good.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an inhalation drug delivery device for respiratory and critical care medicine. Background Technology

[0002] Inhalation therapy is a key treatment method widely used in respiratory and critical care medicine. By delivering drugs directly to the respiratory tract and lungs, it has significant advantages such as rapid onset of action, high local drug concentration, and few systemic side effects. It is especially suitable for the treatment of patients with chronic obstructive pulmonary disease, bronchial asthma, and pulmonary infections.

[0003] Existing inhalation delivery devices often fail to ensure accurate drug inhalation, meaning the timing of drug administration is out of sync with the patient's respiratory cycle. Ideally, inhalation should occur at the beginning or during inhalation, allowing the airflow to effectively deliver the liquid or powdered medication deep into the airways. However, existing push-button aerosols or manually triggered nebulizers require manual activation by the patient (or healthcare provider). For critically ill patients with rapid breathing, weak breathing, or impaired consciousness, accurately triggering the device during the inspiratory phase can easily lead to wasted medication being expelled during the expiratory phase, or insufficient inhalation, severely reducing drug deposition in the lungs and therapeutic efficacy. Summary of the Invention

[0004] This invention aims to provide an inhaled drug delivery device for respiratory and critical care medicine. It utilizes a pressurizing component to pressurize the patient's exhaled air, and a liquid-collecting component to collect the required inhaled medication. During exhalation, the pressurized gas acts on a piston in the liquid-collecting component, expelling gas from the liquid-collecting cylinder. During inhalation, the piston moves in the opposite direction under the action of a spring to collect the medication, which is then delivered via a drug delivery tube. This synchronizes the drug delivery timing with the respiratory cycle, resulting in high efficiency and effectiveness. This invention solves the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An inhalation drug delivery device for respiratory and critical care medicine includes a drug delivery bottle and a drug reservoir. The drug reservoir contains a liquid drug solution for inhalation administration. A face mask is connected to the drug delivery bottle and communicates with the drug reservoir for drug delivery. The drug delivery bottle is connected to a pressurization assembly and a liquid collection assembly. The pressurization assembly includes a housing connected to the drug delivery bottle and a drive mechanism. A pressurization chamber is located inside the housing, and a pair of meshing pressurization gears are rotatably connected to the inner side of the pressurization chamber. The drive mechanism drives either of the pressurization gears to rotate. The liquid collection assembly includes a liquid collection cylinder connected to the drug delivery bottle and a nebulizer. The device includes a piston that is slidably sealed to the inner side of the liquid-collecting cylinder. The piston is also connected to the inner wall of the liquid-collecting cylinder via a spring. The inlet end of the liquid-collecting cylinder is connected to the medicine storage bottle via a liquid-collecting tube. The mask is connected to a drug delivery tube and an exhalation tube. The end of the drug delivery tube away from the mask is connected to the outlet end of the liquid-collecting cylinder. The nebulizer is connected to the drug delivery tube for nebulizing the medicine. The end of the exhalation tube away from the mask is connected to the air inlet of the pressurized chamber. The air outlet of the pressurized chamber is connected to the liquid-collecting cylinder via an air delivery tube, and the air outlet end of the air delivery tube is located on the side of the piston away from the spring.

[0007] Furthermore, the driving component is a knob that is rotatably connected to the housing, and any one of the pressure gears is coaxially and fixedly connected to the knob; the knob is also connected to a spring assembly, and the two ends of the spring assembly are respectively connected to the shaft of the knob and the side wall of the housing; the spring assembly stores potential energy when the spring is wound up, and releases potential energy when the spring is unwound.

[0008] Furthermore, the housing is also rotatably connected to a driving gear and a driven gear that mesh with each other. The knob is coaxially and fixedly connected to the driving gear. Any one of the pressure gears is coaxially and fixedly connected to the driven gear, and the number of teeth of the driving gear is greater than the number of teeth of the driven gear.

[0009] Furthermore, the inner side of the liquid-drawing cylinder is provided with a partition, which divides the inner chamber of the liquid-drawing cylinder into a power chamber and a liquid storage chamber. The piston and spring are located in the power chamber, and the lower end of the spring is connected to the upper end of the partition, and the upper end of the spring is connected to the lower end of the piston. The air outlet end of the air guide tube is located at the upper end of the piston. The drug guide tube and the liquid-drawing tube are connected to the liquid storage chamber.

[0010] Furthermore, the partition is connected to a duckbill valve that is wider at the top and narrower at the bottom. The duckbill valve is used to restrict the flow of the liquid medicine in the storage chamber to the power chamber.

[0011] Furthermore, both the drug delivery tube and the liquid intake tube are connected to a liquid one-way valve. The liquid one-way valve connected to the liquid intake tube controls the liquid to flow unidirectionally from the drug storage bottle to the liquid storage chamber, and the liquid one-way valve connected to the drug delivery tube controls the liquid to flow unidirectionally from the liquid storage chamber to the mask.

[0012] Furthermore, the mask is trumpet-shaped, and the end of the drug delivery tube away from the liquid-collecting cylinder is detachably connected to a drug delivery ball. The drug delivery ball has several through holes and is located at the center of the mask. The end of the exhalation tube away from the pressurized chamber is located on the upper side of the drug delivery ball.

[0013] Furthermore, the lower side of the drug delivery bottle is provided with a connecting protrusion, and the drug storage bottle is provided with a connecting groove that cooperates with the connecting protrusion. The drug storage bottle and the drug delivery bottle are detachably connected through the connecting protrusion and the connecting groove.

[0014] Furthermore, the mask is connected to two straps, both of which are made of elastic material.

[0015] Furthermore, the driving component is a motor, and any one of the pressure gears is fixedly connected to the output shaft of the motor; a control center is connected to the inner side of the drug delivery bottle, and the control center is electrically connected to the motor and the nebulizer and controls their operation.

[0016] The principles and beneficial effects of the technical solution are as follows:

[0017] 1. The present invention provides an inhalation drug delivery device for respiratory and critical care medicine, comprising a drug delivery bottle, a drug storage bottle, and a face mask. The drug delivery bottle is connected to a pressurization assembly and a liquid collection assembly. The pressurization assembly has a pressurization chamber inside its housing, and a pair of pressurization gears are rotatably connected to the inner side of the pressurization chamber. The liquid collection assembly has a piston slidably sealed to the inner side of the liquid collection cylinder, and the piston is connected to the inner wall of the liquid collection cylinder by a spring. The drug delivery tube and the exhalation tube, which are connected to the face mask, are respectively connected to the liquid outlet of the liquid collection cylinder and the air outlet of the pressurization chamber. The air outlet of the pressurization chamber is connected to the liquid collection cylinder through an air delivery tube. When administering medication to respiratory and critically ill patients using this inhalation drug delivery device, a drive unit drives the pressure gears to rotate. A pair of pressure gears rotate within the pressure chamber, meaning the pressure assembly functions as a gear pump. This pump pressurizes the fluid (gas in this application) passing through its cavity. The patient's exhaled air enters the pressure chamber through the exhalation tube, is pressurized, and then enters the liquid collection cylinder through the air delivery tube, acting on the upper side of the piston. This causes the piston to move downwards against the spring, expelling the gas from the inside of the liquid collection cylinder. When the patient inhales and stops exhaling, no gas acts on the upper side of the piston. The piston moves upwards under the spring, drawing the liquid from the storage bottle into the liquid collection cylinder (the piston's reciprocating motion within the liquid collection cylinder is equivalent to a prior art syringe assembly; pushing the piston closer to the cylinder expels the gas, while pulling it away draws the liquid into the cylinder). The liquid then flows through the delivery tube into the nebulizer for atomization and administration. The inhalation drug delivery device of the present invention does not administer drugs during exhalation but administers drugs during inhalation, effectively synchronizing the timing of drug administration with the respiratory cycle to ensure that patients can accurately and effectively inhale drugs, resulting in high efficiency and good effect of inhalation drug delivery.

[0018] 2. This invention provides an inhalation drug delivery device for respiratory and critical care medicine. The driving component is a knob connected to a spring assembly. The spring stores potential energy when wound up and releases it when unwound. When using this inhalation drug delivery device, medical staff rotate the knob to the corresponding position according to actual clinical needs (drug delivery cycle, dosage, time, etc.) to wind up the spring and store the corresponding potential energy. Releasing the force on the knob allows the pressure gear in the pressure chamber to rotate under the action of the spring assembly, pressurizing the patient's exhaled air and synchronizing the drug delivery timing with the respiratory cycle. When the potential energy stored in the spring assembly is released, the pressure gear stops rotating, unable to pressurize the gas, thus stopping the liquid collection component and pausing drug delivery. In other words, by rotating the knob to control the amount of potential energy stored in the spring assembly, the timing and dosage of drug delivery can be controlled. Furthermore, by observing the knob's position, medical staff can intuitively understand the current drug delivery time and dosage. In addition, the housing is rotatably connected to a pair of meshing drive gears and driven gears. The knob is connected to the drive gear, and the pressure gear is connected to the driven gear. The number of teeth on the drive gear is greater than the number of teeth on the driven gear. This ensures that when the spring assembly releases potential energy, the driven gear / pressure gear moves at an accelerated speed relative to the knob / drive gear, thus ensuring the pressurization performance of the patient's exhaled air and improving the functionality of the entire device.

[0019] 3. The present invention provides an inhalation drug delivery device for respiratory and critical care medicine, which has a power chamber and a storage chamber on the inner side of the liquid-collecting cylinder, and connects the two with a duckbill valve to ensure that the gas in the power chamber can flow smoothly into the storage chamber, thereby ensuring the liquid-collecting function of the liquid-collecting component. At the same time, it restricts the flow of the liquid in the storage chamber to the power chamber, so that the power chamber and the storage chamber are "independent" for the liquid, avoiding the liquid from entering the power chamber and coming into contact with the piston, spring, etc., causing contamination, reducing cross-contamination, and reducing the pressure of subsequent cleaning and disinfection. In addition, liquid one-way valves are connected to both the drug delivery tube and the liquid collection tube. The liquid one-way valve connected to the liquid collection tube controls the liquid to flow unidirectionally from the drug storage bottle to the liquid storage chamber, and the liquid one-way valve connected to the drug delivery tube controls the liquid to flow unidirectionally from the liquid storage chamber to the mask. This ensures that after the liquid collection component draws the liquid from the drug storage bottle, all the liquid enters the nebulizer through the drug delivery tube and is then atomized for administration to the patient. This avoids the backflow of the drawn liquid, making it easier to determine the dosage and thus ensuring the accuracy of the medication.

[0020] 4. This invention provides an inhalation drug delivery device for respiratory and critical care medicine. The mask is trumpet-shaped, with a drug delivery tube connected to a drug delivery bulb. The exhalation tube is located on the upper side of the drug delivery bulb. When administering medication to critically ill patients, the mask covers the patient's mouth and nose, the drug delivery bulb is placed inside the patient's mouth, and the nasal cavity is aligned with the exhalation tube, allowing exhaled air to enter the pressurized chamber from the exhalation tube. This ensures the functionality of the inhalation drug delivery device of this invention, which synchronizes drug delivery timing with the patient's respiratory cycle. The medication delivered by the drug delivery tube is entirely delivered to the patient's oral cavity via the drug delivery bulb, preventing medication from adhering to / depositing on the patient's face, further improving the dosage calculation / control of the inhaled medication. The drug reservoir and the drug delivery bottle are detachably connected via a connecting protrusion and a connecting groove, allowing the drug reservoir to be replaced or the medication solution to be adjusted / added to the drug reservoir according to actual clinical needs. The mask is connected to a strap made of elastic material, which is used to fix the mask to the patient's face, further improving the convenience of drug delivery operation and the accuracy of dosage control for critically ill patients.

[0021] 5. The present invention provides an inhalation drug delivery device for respiratory and critical care medicine, which uses an electric motor as the driving component and utilizes a control center to control the operation of the motor and the nebulizer. By controlling the output speed of the motor, the output time of the motor, the nebulizer power, the particle size of the nebulizer, and the nebulization time, it can effectively remind / control the drug delivery time, dosage, nebulization effect / degree, or drug delivery status, thereby enabling targeted and precise drug delivery according to different clinical needs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an inhalation drug delivery device for respiratory and critical care medicine according to the present invention;

[0023] Figure 2 This is a front view of an inhalation drug delivery device for respiratory and critical care medicine according to the present invention;

[0024] Figure 3 for Figure 2 Sectional view of AA;

[0025] Figure 4 for Figure 3 Sectional view of BB;

[0026] Figure 5 for Figure 3 Sectional view of CC;

[0027] Figure 6 This is a side view of an inhalation drug delivery device for respiratory and critical care medicine according to the present invention;

[0028] Figure 7 for Figure 6 A partial sectional view of DD;

[0029] Figure 8 This is a top view of an inhalation drug delivery device for respiratory and critical care medicine according to the present invention.

[0030] The names of the corresponding labels in the attached diagram are:

[0031] 1. Drug administration bottle body; 2. Drug storage bottle body; 3. Mask; 4. Drug delivery tube; 5. Liquid collection tube; 6. Exhalation tube; 7. Box body; 8. Pressurization chamber; 9. Pressurization gear; 10. Air delivery tube; 11. Liquid collection cylinder body; 12. Piston; 13. Spring; 14. Duckbill valve; 15. Liquid check valve; 16. Strap; 17. Spring assembly; 18. Drive gear; 19. Driven gear; 20. Knob; 21. Drug administration ball. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0033] Example 1: As Figures 1 to 8 As shown, an inhalation drug delivery device for respiratory and critical care medicine includes a drug delivery bottle 1 and a drug storage bottle 2. The drug storage bottle 2 contains a drug solution required for inhalation drug delivery. The drug delivery bottle 1 is connected to a mask 3, which communicates with the drug storage bottle 2 for drug delivery. The drug delivery bottle 1 is connected to a pressurization assembly and a liquid collection assembly. The pressurization assembly includes a housing 7 connected to the drug delivery bottle 1 and a drive component. The housing 7 has a pressurization chamber 8 inside, and a pair of meshing pressurization gears 9 are rotatably connected to the inside of the pressurization chamber 8. The drive component drives either of the pressurization gears 9 to rotate. The driving component is a knob 20 rotatably connected to the housing 7. The knob 20 is connected to a spring assembly 17. The two ends of the spring assembly 17 are respectively connected to the shaft of the knob 20 and the side wall of the housing 7. When the spring of the spring assembly 17 is wound up, it stores potential energy, and when the spring of the spring assembly 17 is unwound, it releases potential energy. The housing 7 is also rotatably connected to a driving gear 18 and a driven gear 19 that mesh with each other. The knob 20 is coaxially fixedly connected to the driving gear 18, and any one of the pressure gears 9 is coaxially fixedly connected to the driven gear 19. The number of teeth of the driving gear 18 is greater than the number of teeth of the driven gear 19.

[0034] The liquid-collecting assembly includes a liquid-collecting cylinder 11 connected to the drug delivery bottle 1 and an atomizing device (not shown in the figure). The inner side of the liquid-collecting cylinder 11 is provided with a partition, which divides the inner chamber of the liquid-collecting cylinder 11 into a power chamber and a storage chamber. A duckbill valve 14, wider at the top and narrower at the bottom, is connected to the partition to ensure that gas in the power chamber can flow smoothly into the storage chamber, while also restricting the flow of liquid from the storage chamber to the power chamber. A piston 12 is slidably and sealed within the power chamber, and a spring 13 is connected to the lower end of the piston 12. The lower end of the spring 13... The upper end of the end is connected to the partition plate. The liquid storage chamber of the liquid-drawing cylinder 11 is connected to the medicine storage bottle 2 through the liquid-drawing pipe 5. The mask 3 is connected to the medicine guide pipe 4 and the exhalation pipe 6. The end of the medicine guide pipe 4 away from the mask 3 is connected to the liquid storage chamber of the liquid-drawing cylinder 11. The nebulizer is connected to the medicine guide pipe 4 for nebulization of the medicine. The end of the exhalation pipe 6 away from the mask 3 is connected to the air inlet of the pressurization chamber 8. The air outlet of the pressurization chamber 8 is connected to the power chamber of the liquid-drawing cylinder 11 through the air guide pipe 10. The air outlet end of the air guide pipe 10 is located at the upper end of the piston 12.

[0035] In this embodiment, the lower side of the drug delivery bottle 1 is provided with a connecting protrusion, and the drug storage bottle 2 is provided with a connecting groove that cooperates with the connecting protrusion. The drug storage bottle 2 and the drug delivery bottle 1 are detachably snapped together by the connecting protrusion and the connecting groove. The mask 3 is trumpet-shaped, and the end of the drug delivery tube 4 away from the liquid collection cylinder 11 is detachably fitted with a drug delivery ball 21. The drug delivery ball 21 is provided with several through holes and is located at the center of the mask 3. The end of the exhalation tube 6 away from the pressurization chamber 8 is located on the upper side of the drug delivery ball 21. Two straps 16 are also connected to the outer end face of the mask 3, and both straps 16 are made of elastic material. Both the drug delivery tube 4 and the liquid collection tube 5 are connected to a liquid one-way valve 15. The liquid one-way valve 15 connected to the liquid collection tube 5 controls the liquid to flow unidirectionally from the drug storage bottle 2 to the liquid collection chamber, and the liquid one-way valve 15 connected to the drug delivery tube 4 controls the liquid to flow unidirectionally from the liquid collection chamber to the mask 3.

[0036] The specific implementation process is as follows:

[0037] When using this inhalation drug delivery device, first, according to the patient's actual condition, fill the drug storage bottle 2 with the corresponding type / dosage / concentration of drug, and use its connecting groove to securely connect it to the connecting protrusion of the drug delivery bottle 1; then, use the strap 16 to put the mask 3 on the patient's face. During this process, the drug delivery bulb 21 is placed inside the patient's mouth, and the nasal cavity is located at the air inlet of the exhalation tube 6; finally, according to the actual clinical situation, turn the knob 20 and start the nebulizer to achieve inhalation drug delivery for respiratory and critically ill patients.

[0038] When using this inhalation drug delivery device to administer medication to respiratory and critically ill patients, the pressurization component acts as a gear pump, pressurizing the fluid (exhaled air from the patient) passing through its cavity. Specifically, the patient's exhaled air enters the pressurization chamber 8 through the exhalation tube 6, is pressurized, and then enters the liquid collection cylinder 11 through the air delivery tube 10, acting on the upper side of the piston 12. This causes the piston 12 to move downwards against the force of the spring 13, expelling the gas from the inside of the liquid collection cylinder 11. When the patient inhales and stops exhaling, no gas acts on the upper side of the piston 12. The piston 12 moves upwards under the force of the spring 13, drawing the liquid medication from the drug storage bottle 2 into the liquid collection cylinder 11, and then flowing into the nebulizer via the drug delivery tube 4 for atomization. It is then used for drug delivery; the knob 20 is connected to the spring assembly 17, the spring of the spring assembly 17 stores potential energy when it is wound up, and releases potential energy when it is unwound; when using this inhalation drug delivery device, medical staff turn the knob 20 to the corresponding position according to the actual clinical needs, wind up the spring to store the corresponding potential energy, and after the force on the knob 20 is released, the pressure gear 9 in the pressure chamber 8 rotates under the action of the spring assembly 17 to pressurize the gas exhaled by the patient, so that the timing of drug delivery is synchronized with the respiratory cycle. When the potential energy stored in the spring assembly 17 is released, the pressure gear 9 stops rotating, and can no longer pressurize the gas, so the liquid collection component stops collecting liquid, and thus the drug delivery is stopped.

[0039] Example 2: The difference between this example and Example 1 is that a motor is used as the driving component, and any pressure gear 9 is fixedly connected to the output shaft of the motor. A control center is connected to the inner side of the drug delivery bottle 1, and the control center is electrically connected to the motor and the nebulizer to control their operation. When using the inhalation drug delivery device of this example, according to actual clinical needs, the control center controls the rotational speed of the motor output shaft, the motor running time, the nebulizer power, the particle size of the nebulizer, and the nebulization time, etc., to achieve reminders / controls on the drug delivery time, dosage, nebulization effect / degree, or drug delivery status, thereby achieving targeted and precise drug delivery. The structure, shape, connection relationship between components, and the usage method / principle and technical effects of the entire device are the same as in Example 1, and will not be repeated in this example.

[0040] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A breathing and critical care medicine inhalation administration device, comprising an administration bottle body and a storage bottle body, the storage bottle body containing a liquid medicine required for inhalation administration, and the administration bottle body being connected with a face mask, the face mask being in communication with the storage bottle body for administration; characterized in that, The administration bottle body is connected with a pressurizing assembly and a liquid drawing assembly. The pressurizing assembly comprises a box body connected with the administration bottle body and a driving member. An inner side of the box body is provided with a pressurizing chamber. An inner side of the pressurizing chamber is rotationally connected with a pair of pressurizing gears which are intermeshed. The driving member drives any one of the pressurizing gears to rotate. The liquid drawing assembly comprises a liquid drawing cylinder connected with the administration bottle body and an atomizing device. An inner side of the liquid drawing cylinder is slidingly and sealingly connected with a piston. The piston is further connected with an inner side wall of the liquid drawing cylinder through a spring. An inlet end of the liquid drawing cylinder is communicated with the storage bottle body through a liquid drawing pipe. The face mask is communicated with a medicine guiding pipe and an exhalation pipe. An end of the medicine guiding pipe away from the face mask is communicated with an outlet end of the liquid drawing cylinder. The atomizing device is connected with the medicine guiding pipe for atomizing the medicine liquid. An end of the exhalation pipe away from the face mask is communicated with an air inlet of the pressurizing chamber. An air outlet of the pressurizing chamber is communicated with the liquid drawing cylinder through an air guiding pipe. An air outlet end of the air guiding pipe is arranged on a side of the piston away from the spring.

2. The inhalation administration device for respiratory and critical care medicine of claim 1, wherein, The driving member is a knob rotationally connected with the box body. Any one of the pressurizing gears is coaxially and fixedly connected with the knob. The knob is further connected with a spring assembly. Two ends of the spring assembly are respectively connected with a shaft of the knob and a side wall of the box body. When the spring of the spring assembly is wound, potential energy is stored. When the spring of the spring assembly is unwound, the potential energy is released.

3. The inhalation administration device for respiratory and critical care medicine of claim 2, wherein The box body is further rotationally connected with a driving gear and a driven gear which are intermeshed. The knob is coaxially and fixedly connected with the driving gear. Any one of the pressurizing gears is coaxially and fixedly connected with the driven gear. The number of teeth of the driving gear is greater than that of the driven gear.

4. The inhalation administration device for respiratory and critical care medicine of claim 1, wherein An inner side of the liquid drawing cylinder is provided with a partition plate. The partition plate divides an inner chamber of the liquid drawing cylinder into a power chamber and a liquid storage chamber. The piston and the spring are arranged in the power chamber. A lower end of the spring is connected with an upper end of the partition plate. An upper end of the spring is connected with a lower end of the piston. An air outlet end of the air guiding pipe is arranged on an upper end of the piston. The medicine guiding pipe and the liquid drawing pipe are communicated with the liquid storage chamber.

5. The inhalation administration device for respiratory and critical care medicine of claim 4, wherein The partition plate is connected with a duckbill valve which is large at the upper end and small at the lower end. The duckbill valve is used for limiting the medicine liquid in the liquid storage chamber to flow to the power chamber side.

6. The inhalation administration device for respiratory and critical care medicine of claim 4, wherein The medicine guiding pipe and the liquid drawing pipe are both connected with liquid one-way valves. The liquid one-way valve connected with the liquid drawing pipe controls the medicine liquid to flow from the storage bottle body to the liquid storage chamber side in one direction. The liquid one-way valve connected with the medicine guiding pipe controls the medicine liquid to flow from the liquid storage chamber to the face mask side in one direction.

7. The inhalation administration device for respiratory and critical care medicine of claim 1, wherein The face mask is in the shape of a horn. An end of the medicine guiding pipe away from the liquid drawing cylinder is detachably communicated with a medicine administration ball. The medicine administration ball is provided with a plurality of through holes. The medicine administration ball is arranged at a central position of the face mask. An end of the exhalation pipe away from the pressurizing chamber is arranged on an upper side of the medicine administration ball.

8. The inhalation administration device for respiratory and critical care medicine of claim 1, wherein, A lower side of the administration bottle body is provided with a connecting protrusion. The storage bottle body is provided with a connecting groove matched with the connecting protrusion. The storage bottle body and the administration bottle body are detachably connected through the connecting protrusion and the connecting groove.

9. The inhalation administration device for respiratory and critical care medicine according to claim 1, characterized in that, The face mask is connected with two straps. The two straps are both made of elastic material.

10. The inhalation administration device for respiratory and critical care medicine according to claim 1, characterized by The driving member is a motor, and any one of the pressurizing gears is fixedly connected with an output shaft of the motor; the inside of the medicine feeding bottle body is connected with a control center, and the control center is electrically connected with the motor and the atomization equipment and controls the operation of the motor and the atomization equipment.

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