Portable self-driven antibiotic aerosol inhalation device

Abstract

The invention discloses a portable self-driven antibiotic atomization inhalation device, belongs to the technical field of medical instruments, and aims to solve the problems that an existing atomization device depends on an external power source and an air source, and is complex in structure, poor in portability and high in cost, the device core comprises an inhalation tube, a sealing cover, an atomization administration core, a medicament tank and a replaceable suction nozzle, human body inspiration airflow serves as a unique power source, the pneumatic impeller is driven by the air inlet airflow to drive the dosing pump to complete automatic medicament pumping, liquid medicine atomization is achieved through cooperation of high-speed airflow of a narrow air port and high-frequency vibration of the metal reed, and the device does not need external energy and is simple in structure, low in cost, high in portability, high in atomization efficiency and suitable for popularization and application. Fog particles are uniform and easy to absorb, and the use requirements of families, outdoors and other power-free scenes can be met.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a portable self-powered antibiotic nebulizer inhalation device. Background Technology

[0002] Inhaled antibiotic therapy is an important method of drug administration for treating respiratory infections. Nebulized inhalation allows medication to act directly on the respiratory tract and lung lesions, offering advantages such as rapid onset of action, small dosage, and fewer systemic adverse reactions. Currently, widely used nebulized inhalation devices in clinical practice mainly include compressor nebulizers, ultrasonic nebulizers, and vibrating sieve nebulizers.

[0003] However, existing nebulizers generally suffer from the following technical defects: First, relying on external power or air source, compressor nebulizers need to be used with an air compressor, which is bulky and inconvenient to carry; ultrasonic nebulizers and vibrating screen nebulizers both require external power supply, which cannot meet the needs of patients in environments without power, such as at home, outdoors or while traveling.

[0004] Secondly, they are complex in structure and expensive. Existing atomizers are usually composed of multiple complex components such as motors, compressors, and circuit control systems, which not only have high manufacturing costs, but also high failure rates and are difficult to maintain.

[0005] Third, energy efficiency is low. Existing electric nebulizers suffer significant energy losses during energy conversion, and the equipment generates loud noise and noticeable heat during operation, affecting the patient's user experience.

[0006] Fourth, the ease of use is insufficient. Existing nebulizers usually need to be used with a mask or mouthpiece, and there are many accessories such as nebulizer cups and tubing, which are inconvenient to assemble and clean. This is especially true for children, the elderly, or patients with limited mobility, making operation difficult.

[0007] In summary, the existing technology lacks a self-driven nebulizer inhalation device that is simple in structure, requires no external power source, is portable, and is inexpensive. This is precisely the technical problem that this invention aims to solve. Summary of the Invention

[0008] The technical problem to be solved by this invention is that existing nebulized inhalation devices rely on external power or gas sources, have complex structures, high costs, and low energy utilization efficiency. To address this, we propose a portable, self-powered antibiotic nebulized inhalation device.

[0009] To achieve the above objectives, this application adopts the following technical solution: A portable self-powered antibiotic nebulizer includes an inhalation tube, a sealing cap, and a replaceable mouthpiece. The sealing cap is connected to the end of the inhalation tube, and the replaceable mouthpiece is inserted into the front end of the inhalation tube. The inhalation tube has an axially continuous cavity inside, in which the atomizing drug delivery core and the drug container are coaxially arranged from front to back. The side wall of the inhalation tube has an air inlet that communicates with the inside of the cavity. A venting hollow needle is fixedly connected to the inner end face of the sealing cap facing the cavity of the inhalation tube. A vent is opened on the outer end face of the sealing cap away from the inhalation tube, which is connected to the outside atmosphere. The inner cavity of the venting hollow needle and the vent form a continuous air intake path. A hollow drug delivery needle is fixedly connected to the end face of the nebulizer drug delivery core facing the drug canister. The nebulizer drug delivery core has two independent drug channels inside. The outlet end of the hollow drug delivery needle is connected to the inlet end of the two drug channels respectively. A drug delivery pump is connected in series in the middle of each drug channel. The power input end of the drug delivery pump is connected to a pneumatic impeller. The pneumatic impeller is located inside the air inlet, and the working surface of the pneumatic impeller blades faces the air inlet direction. Two metal springs are inserted at the outlet end of the drug channel. The two metal springs are stacked parallel to each other and a gap of 0.5mm-1mm is reserved between the two metal springs. A narrow air vent is opened on the nebulizing drug delivery core. The air inlet end of the narrow air vent is connected to the airflow path of the air inlet. The metal spring is located at the outlet of the narrow air vent, and the plane of the metal spring is parallel to the air outlet direction of the narrow air vent.

[0010] Preferably, the replaceable mouthpiece has a duckbill opening integrally molded at the front end, and the entire replaceable mouthpiece is made of medical-grade silicone material through one-piece injection molding; the insertion end of the replaceable mouthpiece is provided with a limiting step, which abuts against the front end face of the suction tube for limiting.

[0011] Preferably, puncture openings are reserved at the center of both ends of the axial end face of the medicine container, and the puncture openings are sealed by medical silicone caps; the ventilation hollow needle and the drug delivery hollow needle are respectively aligned with the puncture openings at both ends of the medicine container, so as to facilitate insertion into the inner cavity of the medicine container through the corresponding silicone caps.

[0012] Preferably, a one-way vent valve is connected in series in the air intake path between the vent hollow needle and the vent port. The forward direction of the one-way vent valve is from the vent port toward the vent hollow needle, and the reverse blocking direction is from the vent hollow needle toward the vent port.

[0013] Preferably, an air filter cotton is also provided in the air intake path between the one-way vent valve and the vent. The outer edge of the air filter cotton is press-fitted with the inner wall of the air intake path to filter and sterilize the outside air entering the medicine tank.

[0014] Preferably, the drug delivery pump includes a pump chamber, which is coaxially opened in the middle of the drug channel. An eccentric rotating block is rotatably connected inside the pump chamber. The eccentric rotating block is coaxially fixedly connected to the pneumatic impeller via a rotating shaft. The rotation axis of the eccentric rotating block is eccentrically set with respect to the central axis of the pump chamber.

[0015] Preferably, the outer peripheral sidewall of the eccentric rotating block is symmetrically provided with two sets of sliding grooves, and each set of sliding grooves is slidably inserted with a movable blade. A return spring is provided between the inner end of the movable blade and the bottom of the sliding groove, and the return spring is used to drive the outer end of the movable blade to always be in sealed contact with the inner wall of the pump cavity.

[0016] Preferably, the air outlet of the air inlet is provided with a guide air passage, and the air outlet of the guide air passage is directly opposite the working surface of one side of the blade of the pneumatic impeller, so as to drive the airflow entering through the air inlet to rotate the pneumatic impeller unidirectionally in a preset direction.

[0017] Preferably, the outlet end face of the narrow vent is flush with the outlet end face of the drug channel, and the outlet of the narrow vent is directly opposite the atomization gap between the metal springs. The high-speed airflow accelerated by the narrow vent forms a negative pressure drainage zone at the outlet end of the drug channel to assist in the stable delivery of the drug liquid in the drug channel into the atomization gap.

[0018] Preferably, the rear end face of the nebulizing drug delivery core abuts against and limits the front end face of the annular limiting step, and the front end face of the drug delivery core abuts against and positions the rear end face of the annular limiting step, so as to ensure that the drug delivery hollow needle and the ventilation hollow needle are coaxially aligned with the puncture openings at both ends of the drug delivery core, thereby achieving precise puncture.

[0019] The technical effects and advantages of this invention are as follows: 1. Self-driving without external power source: This invention utilizes the rapid airflow generated when the human body inhales to drive the pneumatic impeller to rotate, thereby driving the drug delivery pump to achieve automatic extraction and delivery of the drug. The entire process relies entirely on the airflow inhaled by the human body as the power source, without the need for an external power source or air source, truly realizing the self-driving function of the nebulizer inhalation device, greatly improving portability and ease of use.

[0020] 2. High atomization efficiency: This invention sets up a narrow air vent, so that the high-speed airflow forms a negative pressure zone at the outlet of the drug channel, realizing negative pressure drainage to assist in drug delivery; at the same time, the high-speed airflow drives the metal spring to vibrate at high speed, so as to atomize the drug evenly. The two atomization mechanisms work together to significantly improve the atomization efficiency, so that the liquid medicine can form fine and evenly distributed mist particles, which are easier for the human body to absorb. Attached Figure Description

[0021] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the vent structure of the present invention; Figure 2 This is a schematic diagram of the duckbill mouth structure of the present invention; Figure 3 This is a schematic diagram of the exploded structure of the present invention; Figure 4 This is a cross-sectional view of the present invention. Figure 1 ; Figure 5 This is a cross-sectional view of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the atomized drug delivery core structure of the present invention; Figure 7 This is a schematic diagram of the drug delivery pump structure of the present invention.

[0022] Legend: 1. Inhalation tube; 2. Sealing cap; 3. Nebulizer core; 4. Drug container; 5. Replaceable mouthpiece; 6. Duckbill mouthpiece; 7. Air inlet; 8. Ventilation needle; 9. Ventilation port; 10. Drug delivery needle; 11. Drug channel; 12. Drug delivery pump; 1201. Pump chamber; 1202. Eccentric rotating block; 1203. Sliding groove; 1204. Movable blade; 1205. Return spring; 13. Pneumatic impeller; 14. Metal spring; 15. Narrow vent; 16. One-way ventilation valve; 17. Filter cotton. Detailed Implementation

[0023] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Example 1, please refer to Figures 1 to 7As shown, the present invention provides a first embodiment of a portable self-powered antibiotic nebulizer inhalation device. The device mainly includes core components such as an inhalation tube 1, a sealing cap 2, a nebulizer core 3, a drug container 4, and a replaceable mouthpiece 5. These components cooperate with each other to achieve the self-powered nebulizer inhalation function.

[0025] In this embodiment, the inhalation tube 1 has a hollow tubular structure with an axially penetrating accommodating cavity inside. The inner diameter of the accommodating cavity is slightly larger than the outer diameter of the atomizing drug delivery core 3 and the drug canister 4, so that the two can be coaxially housed therein. The side wall of the inhalation tube 1 has an air inlet 7 that communicates with the inside of the accommodating cavity. The air inlet 7 is located at the middle of the inhalation tube 1, slightly towards the front end, directly opposite the working surface of the pneumatic impeller 13 blades. The air inlet 7 is designed in an arc shape, and its diameter is matched to the size of the pneumatic impeller 13 to ensure that the airflow can effectively drive the pneumatic impeller 13 to rotate.

[0026] The sealing cap 2 is threaded to the end of the inhalation tube 1 to seal the accommodating cavity and fix the axial position of the nebulizer core 3 and the drug canister 4. The replaceable nozzle 5 is inserted into the front end of the inhalation tube 1 to form a channel for the patient to inhale the drug mist.

[0027] The accommodating cavity contains, from front to back, atomizing drug delivery core 3 and a drug container 4 coaxially arranged. A drug delivery hollow needle 10 is fixedly connected to the end face of the atomizing drug delivery core 3 facing the drug container 4. The needle length of the drug delivery hollow needle 10 is designed to be able to be inserted into the drug container 4. The atomizing drug delivery core 3 has two independent drug channels 11 inside. The inlet end of each drug channel 11 is connected to the inner cavity of the drug delivery hollow needle 10, so that the drug liquid in the drug container 4 can be delivered to the two drug channels 11 respectively.

[0028] The atomizing drug delivery core 3 has an annular limiting step on the rear end face facing the drug container 4. The front end face of the drug container 4 facing the atomizing drug delivery core 3 abuts against the rear end face of the annular limiting step for positioning. This limiting structure design can ensure that the drug delivery hollow needle 10 and the ventilation hollow needle 8 are coaxially aligned with the puncture openings at both ends of the drug container 4, achieving precise puncture.

[0029] A ventilating hollow needle 8 is fixedly connected to the inner end face of the sealing cap 2 facing the cavity of the inhalation tube 1. The needle length of the ventilating hollow needle 8 is equivalent to that of the drug delivery hollow needle 10. The two are inserted into the inner cavity of the drug container 4 from both ends. The outer end face of the sealing cap 2 facing away from the inhalation tube 1 has a vent 9 that communicates with the outside atmosphere. The inner cavity of the ventilating hollow needle 8 and the vent 9 form a continuous air intake path.

[0030] Each drug delivery channel 11 is equipped with a drug delivery pump 12 connected in series in the middle. The power input end of the drug delivery pump 12 is connected to a pneumatic impeller 13. The pneumatic impeller 13 is located inside the air inlet 7, and the working surface of the blades of the pneumatic impeller 13 faces the air intake direction of the air inlet 7. The pneumatic impeller 13 has 6 blades. This structural design can ensure high transmission efficiency when the airflow drives the impeller to rotate.

[0031] The drug delivery pump 12 includes a pump chamber 1201, which is coaxially located in the middle of the drug channel 11. An eccentric rotating block 1202 is rotatably connected inside the pump chamber 1201. The eccentric rotating block 1202 is coaxially fixedly connected to the pneumatic impeller 13 via a rotating shaft. The rotation axis of the eccentric rotating block 1202 is eccentrically set with respect to the central axis of the pump chamber 1201. This eccentric structure is the key to realizing the pumping function. When the eccentric rotating block 1202 rotates, the volume of the space formed between it and the inner wall of the pump chamber 1201 will periodically increase and decrease, thereby realizing the pumping action of suction and discharge.

[0032] Two metal springs 14 are inserted into the outlet end of the drug channel 11. The two metal springs 14 are stacked parallel to each other, with a 0.5mm gap between them. This gap forms an atomization gap, where the drug is atomized into fine mist particles. The metal springs 14 are made of highly elastic stainless steel, which has good corrosion resistance and stable elasticity.

[0033] The atomizing drug delivery core 3 has a narrow vent 15. The air inlet of the narrow vent 15 is connected to the airflow path of the air inlet 7. The cross-sectional area of ​​the narrow vent 15 is significantly smaller than that of the air inlet 7. This design allows the high-speed airflow to generate an acceleration effect when passing through the narrow vent 15. The end face of the outlet of the narrow vent 15 is flush with the end face of the outlet of the drug channel 11. The metal spring 14 is located at the outlet of the narrow vent 15, and the plane of the metal spring 14 is parallel to the air outlet direction of the narrow vent 15. The outlet of the narrow vent 15 is directly opposite the atomization gap between the metal springs 14.

[0034] When using the device of this embodiment, the patient takes the replaceable mouthpiece 5 into their mouth and inhales quickly. Air enters the inhalation tube 1 through the air inlet 7, driving the pneumatic impeller 13 to rotate. The pneumatic impeller 13 drives the eccentric rotating block 1202 to rotate, thereby pumping the medication. The medication is pumped into the gap between the two metal springs 14. Under the action of high-speed airflow, the metal springs 14 vibrate at high speed, atomizing the medication and allowing it to enter the patient's lungs with the airflow.

[0035] Example 2, please continue to refer to Figures 1 to 7 The second embodiment of the present invention further optimizes several key technical details based on the first embodiment to provide a better user experience and higher security.

[0036] In terms of the structure of the replaceable suction nozzle 5, this embodiment makes further improvements. The front end of the replaceable suction nozzle 5 is integrally molded with a duckbill opening 6. The duckbill opening 6 adopts an ergonomic design, and its shape fits the lips better, which can effectively prevent air leakage during use. Preferably, the replaceable suction nozzle 5 is integrally injection molded from medical-grade silicone material. Medical-grade silicone has good biocompatibility, a soft touch, and excellent elasticity, which can adapt to the mouth shape of different patients and improve the comfort of use. The insertion end of the replaceable suction nozzle 5 is provided with a limiting step, which abuts against the front end face of the suction tube 1 to ensure that the replaceable suction nozzle 5 is installed firmly and positioned accurately. The replaceable suction nozzle 5 adopts a replaceable design, and a new nozzle can be replaced after each use, effectively avoiding cross-infection and improving hygiene.

[0037] In terms of the structure of the medicine container 4, this embodiment has made further optimizations. Puncture openings are pre-drilled at the center of both ends of the axial end face of the medicine container 4. These puncture openings are sealed with medical silicone caps. The medical silicone caps have excellent sealing performance and self-healing properties after puncture. When the ventilation hollow needle 8 and the drug delivery hollow needle 10 are inserted, the needle hole can be tightly wrapped by the silicone material to prevent leakage of the medicine. When the needle is withdrawn, the silicone material can automatically spring back to seal. The ventilation hollow needle 8 and the drug delivery hollow needle 10 are respectively aligned with the puncture openings at both ends of the medicine container 4, facilitating precise puncture by inserting the corresponding silicone cap into the inner cavity of the medicine container 4. This design not only ensures good sealing performance but also facilitates the replacement of the medicine container 4.

[0038] Regarding the ventilation structure, this embodiment adds filtration and leak-proof functions. A one-way vent valve 16 is connected in series in the air intake path between the venting hollow needle 8 and the vent 9. The forward direction of the one-way vent valve 16 is from the vent 9 towards the venting hollow needle 8, and the reverse blocking direction is from the venting hollow needle 8 towards the vent 9. The one-way vent valve 16 can prevent the liquid medicine in the medicine tank 4 from leaking to the outside, ensuring safe use. An air filter cotton 17 is also provided in the air intake path between the one-way vent valve 16 and the vent 9. The outer edge of the air filter cotton 17 is press-fitted with the inner wall of the air intake path to filter the outside air entering the medicine tank 4 for sterilization and dust removal. The air filter cotton 17 is made of medical-grade meltblown nonwoven fabric with a filtration accuracy of up to 0.3μm, which can effectively filter bacteria, viruses and particulate matter in the air, ensuring that the air entering the medicine tank 4 is clean and hygienic.

[0039] In terms of the structure of the drug delivery pump 12, this embodiment has made further optimizations. Two sets of sliding grooves 1203 are symmetrically formed on the outer peripheral sidewall of the eccentric rotating block 1202. A movable blade 1204 is slidably inserted into each sliding groove 1203. A return spring 1205 is abutting between the inner end of the movable blade 1204 and the bottom of the sliding groove 1203. The return spring 1205 drives the outer end of the movable blade 1204 to always be in sealed contact with the inner wall of the pump chamber 1201. This design ensures the sealing between the movable blade 1204 and the inner wall of the pump chamber 1201, preventing leakage of the drug solution during pumping. At the same time, the elasticity of the return spring 1205 is designed to be moderate, ensuring both a good sealing effect and the flexible movement of the movable blade 1204.

[0040] In terms of airflow guidance, this embodiment has been further optimized. A guide channel is provided at the outlet end of the air inlet 7, with the outlet end of the guide channel directly facing the working surface of one side of the pneumatic impeller 13 blades. This guide channel is used to directionally drive the airflow entering through the air inlet 7 to rotate the pneumatic impeller 13 unidirectionally in a preset direction. The guide channel adopts an arc-shaped flow channel design, which allows the airflow to be guided more smoothly to the working surface of the pneumatic impeller 13 blades, reducing energy loss and improving driving efficiency. The design of the guide channel ensures that the airflow can stably and effectively drive the pneumatic impeller 13 to rotate unidirectionally, avoiding pumping failure caused by impeller reversal.

[0041] Regarding the atomization structure, this embodiment further optimizes the parameters of the narrow vent 15. The outlet face of the narrow vent 15 is flush with the outlet face of the drug channel 11, and the outlet of the narrow vent 15 is directly opposite the atomization gap between the metal springs 14. The high-speed airflow accelerated by the narrow vent 15 forms a negative pressure drainage zone at the outlet end of the drug channel 11 to assist in the stable delivery of the drug liquid in the drug channel 11 into the atomization gap. The gap between the two metal springs 14 is preferably 0.7 mm, which ensures good atomization effect and stable drug liquid delivery. The ratio of the cross-sectional area of ​​the narrow vent 15 to the cross-sectional area of ​​the inlet 7 is 1:3 to 1:5, preferably 1:4, to ensure a significant airflow acceleration effect.

[0042] The usage process of this embodiment is basically the same as that of Embodiment 1, with the following differences: (1) Outside air first enters through the vent 9, then passes through the air filter cotton 17 for sterilization and dust removal, then enters through the one-way vent valve 16, and finally enters the medicine tank 4 through the venting hollow needle 8 to balance the air pressure. The one-way vent valve 16 can prevent the medicine liquid from flowing back and leaking. The air filter cotton 17 ensures that the air entering the medicine tank 4 is clean and hygienic. (2) When the patient changes the replaceable nozzle 5, he / she only needs to insert the newly opened replaceable nozzle 5 into the front end of the inhalation tube 1, and the limiting step will automatically abut against the front end face of the inhalation tube 1 to achieve quick installation. (3) The atomization effect is better. The high-speed airflow is accelerated through the narrow air vent 15 and then sprayed out to form a stronger negative pressure drainage zone, which helps to stabilize the delivery of the medicine. At the same time, the metal spring 14 generates a higher frequency vibration under the drive of the high-speed airflow, and the atomization is more uniform and delicate.

[0043] Example 3, based on Examples 1 and 2, further describes the cooperation relationship between the components and the detailed working principle.

[0044] The rear end face of the nebulizing drug delivery core 3 facing the drug container 4 abuts against the front end face of the annular limiting step, and the front end face of the drug container 4 facing the nebulizing drug delivery core 3 abuts against the rear end face of the annular limiting step. This ensures that the drug delivery hollow needle 10 and the ventilation hollow needle 8 are coaxially aligned with the puncture openings at both ends of the drug container 4, achieving precise puncture. This precise axial positioning design ensures that the ventilation hollow needle 8 and the drug delivery hollow needle 10 can accurately puncture the medical silicone cap and enter the inner cavity of the drug container 4, avoiding puncture failure or drug leakage caused by inaccurate positioning.

[0045] When using the device of the present invention, first insert the newly opened replaceable nozzle 5 into the front end of the inhalation tube 1, ensuring that the limiting step abuts against the front end face of the inhalation tube 1. Then unscrew the sealing cap 2 and place the medicine canister 4 containing antibiotics into the inhalation tube 1. Make sure that the two axial ends of the medicine canister 4 abut against and are positioned against the annular limiting step of the nebulizing drug delivery core 3. Finally, tighten the sealing cap 2. During this process, the ventilation hollow needle 8 and the drug delivery hollow needle 10 pierce the medical silicone caps at both ends of the medicine canister 4 and are inserted into the inner cavity of the medicine canister 4.

[0046] In use, the patient places the duckbill 6 of the replaceable mouthpiece 5 into their mouth and then inhales quickly. Air enters the suction tube 1 through the air inlet 7 and is directed through the airflow channel to the working surface of one side of the pneumatic impeller 13 blades, driving the pneumatic impeller 13 to rotate in a preset direction. The design of the airflow channel ensures that the airflow acts stably on the blades of the pneumatic impeller 13, avoiding reduced driving efficiency caused by airflow dispersion.

[0047] While the pneumatic impeller 13 rotates, it drives the eccentric rotating block 1202 to rotate synchronously. During the rotation of the eccentric rotating block 1202, the space enclosed by it, the two sets of movable blades 1204, and the inner wall of the pump chamber 1201 changes periodically. When the space rotates from the outlet end to the inlet end, its volume gradually increases, creating a negative pressure in the pump chamber 1201, which draws the antibiotic solution in the medicine tank 4 into the pump chamber 1201 through the drug delivery needle 10. When the space rotates from the inlet end to the outlet end, its volume gradually decreases, which discharges the antibiotic solution in the pump chamber 1201 to the outlet end and delivers it to the outlet end of the medicine channel 11. Through this periodic change, the present invention realizes the automatic pumping function of the medicine without any external power source.

[0048] At the same time, outside air enters through the vent 9, is filtered and sterilized by the air filter cotton 17, and then enters the medicine tank 4 through the one-way vent valve 16 and the venting hollow needle 8 to balance the air pressure. The one-way vent valve 16 can prevent the medicine from flowing back and leaking. The air filter cotton 17 is made of medical-grade degreased cotton or meltblown nonwoven fabric, and the filtration accuracy can reach 0.3μm, which can effectively filter bacteria and particulate matter in the air.

[0049] After the medication is pumped to the outlet of the medication channel 11, it flows into the gap between the two metal springs 14 and diffuses evenly into the gap under the capillary effect. At the same time, the air velocity increases when passing through the narrow ventilation port 15, and a negative pressure drainage zone is formed at the outlet of the medication channel 11, which helps to stably deliver the medication in the medication channel 11 into the atomization gap. When the accelerated airflow passes through the metal springs 14, it causes the metal springs 14 to vibrate at high speed, atomizing the medication in the gap between the two metal springs 14 and allowing it to enter the patient's lungs with the airflow.

[0050] The pneumatic impeller 13 preferably has 4 to 8 blades, and the blade angle is preferably 15° to 30° to obtain the best driving efficiency and smooth operation. The ratio of the cross-sectional area of ​​the narrow air inlet 15 to the cross-sectional area of ​​the air inlet 7 is preferably 1:3 to 1:5 to ensure a significant airflow acceleration effect. The gap between the two metal springs 14 is preferably 0.7 mm, which can ensure good atomization effect and stable drug delivery.

[0051] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A portable, self-powered antibiotic nebulizer, characterized in that, It includes an inhalation tube, a sealing cap, and a replaceable mouthpiece, wherein the sealing cap is connected to the end of the inhalation tube, and the replaceable mouthpiece is inserted into the front end of the inhalation tube; The inhalation tube has an axially penetrating cavity inside, in which an atomizing drug delivery core and a drug container are coaxially housed from front to back. The side wall of the inhalation tube has an air inlet that communicates with the inside of the cavity. A venting hollow needle is fixedly connected to the inner end face of the sealing cap facing the cavity of the inhalation tube. The outer end face of the sealing cap facing away from the inhalation tube has a vent that communicates with the outside atmosphere. The inner cavity of the venting hollow needle and the vent form a continuous air intake path. A hollow drug delivery needle is fixedly connected to one end face of the nebulizing drug delivery core facing the drug canister. The nebulizing drug delivery core has two independent drug channels inside. The outlet end of the hollow drug delivery needle is connected to the inlet end of each of the two drug channels. A drug delivery pump is connected in series in the middle of each drug channel. The power input end of the drug delivery pump is driven to a pneumatic impeller. The pneumatic impeller is located inside the air inlet, and the working surface of the pneumatic impeller blades faces the air inlet direction. Two metal springs are inserted at the outlet end of the drug channel. The two metal springs are stacked parallel to each other, and a gap of 0.5mm-1mm is reserved between the two metal springs. A narrow vent is opened on the atomizing drug delivery core. The air inlet end of the narrow vent is connected to the airflow path of the air inlet. The metal spring is located at the outlet of the narrow vent, and the plane of the metal spring is parallel to the air outlet direction of the narrow vent.

2. The portable self-powered antibiotic nebulizer inhalation device according to claim 1, characterized in that, The replaceable suction nozzle has a duckbill opening integrally formed at the front end, and the replaceable suction nozzle is integrally injection molded from medical-grade silicone material; the insertion end of the replaceable suction nozzle is provided with a limiting step, and the limiting step abuts against the front end face of the suction tube for limiting.

3. The portable self-powered antibiotic nebulizer inhalation device according to claim 1, characterized in that, The medicine container has puncture openings at the center of both ends of its axial end face, and the puncture openings are sealed with medical silicone caps. The ventilation hollow needle and the drug delivery hollow needle are respectively positioned opposite the puncture openings at both ends of the medicine container, so that they can be inserted into the inner cavity of the medicine container through the corresponding silicone caps.

4. The portable self-powered antibiotic nebulizer inhalation device according to claim 1, characterized in that, A one-way vent valve is connected in series in the air intake path between the venting hollow needle and the vent. The one-way vent valve has a forward guiding direction from the vent towards the venting hollow needle and a reverse blocking direction from the venting hollow needle towards the vent.

5. The portable self-powered antibiotic nebulizer inhalation device according to claim 4, characterized in that, An air filter cotton is also provided in the air intake passage between the one-way vent valve and the vent, and the outer edge of the air filter cotton is interference-fitted with the inner wall of the air intake passage.

6. The portable self-powered antibiotic nebulizer inhalation device according to claim 1, characterized in that, The drug delivery pump includes a pump chamber, which is coaxially opened in the middle of the drug channel. An eccentric rotating block is rotatably connected inside the pump chamber. The eccentric rotating block is coaxially fixedly connected to the pneumatic impeller via a rotating shaft. The rotation axis of the eccentric rotating block is eccentrically set with respect to the central axis of the pump chamber.

7. The portable self-powered antibiotic nebulizer inhalation device according to claim 6, characterized in that, The outer peripheral sidewall of the eccentric rotating block is symmetrically provided with two sets of sliding grooves. Each set of sliding grooves has a movable blade slidably inserted into it. A return spring is provided between the inner end of the movable blade and the bottom of the sliding groove. The return spring is used to drive the outer end of the movable blade to always be in sealed contact with the inner wall of the pump cavity.

8. The portable self-powered antibiotic nebulizer inhalation device according to claim 1, characterized in that, The air inlet is provided with a guide air passage at its outlet end. The outlet end of the guide air passage is directly opposite the working surface of one side of the blade of the pneumatic impeller, which is used to direct the airflow entering through the air inlet to drive the pneumatic impeller to rotate unidirectionally in a preset direction.

9. The portable self-powered antibiotic nebulizer inhalation device according to claim 1, characterized in that, The outlet end face of the narrow vent is flush with the outlet end face of the drug channel. The outlet of the narrow vent is directly opposite the atomization gap between the metal springs. The high-speed airflow accelerated by the narrow vent forms a negative pressure drainage zone at the outlet end of the drug channel to assist in the stable delivery of the drug liquid in the drug channel into the atomization gap.

10. The portable self-powered antibiotic nebulizer inhalation device according to claim 1, characterized in that, The rear end face of the nebulizing drug delivery core abuts against the front end face of the annular limiting step, and the front end face of the drug delivery core abuts against the rear end face of the annular limiting step, so as to ensure that the drug delivery hollow needle and the ventilation hollow needle are coaxially aligned with the puncture openings at both ends of the drug delivery core, thereby achieving precise puncture.

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