CN114558208A - Portable micro-mesh nebulizer with low liquid residue - Google Patents

Abstract

The invention belongs to the technical field of medical treatment, and particularly relates to a portable micro-grid atomizer with low liquid medicine residue, which comprises a driving host, an atomizing device, a mist storage tank and a mouthpiece, wherein the atomizing device is integrated with an electric connector, a liquid storage chamber and a mist outlet arranged along the transverse direction, and a conductive probe is arranged in the electric connector; the side part of the mist storage tank is provided with a mist inlet arranged along the transverse direction, the lower end of the mist storage tank is provided with a gas suction inlet, a first one-way valve is arranged at the gas suction inlet, and the upper end of the mist storage tank is provided with a gas suction mist supply port; the mouthpiece is provided with an inspiration mist inlet, an expiration air outlet and a breathing mouth for a patient to bite, and the expiration air outlet is provided with a second one-way valve. The aerosol inhalation device has the advantages of small volume, less residual liquid medicine, convenience in use and the like, can reduce the sedimentation of atomized aerogel in the aerosol storage tank, and effectively solves the problem of inconvenience in exhalation caused by the fact that the atomized aerogel is brought out by exhalation during atomization or the atomization device needs to be removed during atomization.

Description

Portable micro-mesh nebulizer with low liquid residue

technical field

The invention belongs to the field of medical technology, and in particular relates to a portable micro-mesh atomizer with low medicinal liquid residue.

Background technique

Atomization inhalation therapy is to disperse the liquid medicine into micron-sized mist-like liquid particles through an atomizer, and reach the patient's lungs through the patient's respiratory tract, so as to achieve painless and rapid treatment such as cough, asthma, sore throat, pharyngitis and bronchial pneumonia. and other diseases. The main equipment types are jet atomizers, ultrasonic atomizers, and micro-mesh atomizers.

Defects and deficiencies of the prior art:

1. In the existing nebulizer, jet nebulization needs to be provided by a branch of the gas-phase airflow shunt of the ventilator to provide the driving air source. The driving pressure provided by most ventilators to the nebulizer is less than 15 psi, which is lower than compressed air or oxygen commonly used in hospitals (50 psi). ) is small, the reduction in driving pressure reduces the efficiency of the jet nebulizer, and the resulting aerosol increases in diameter, thereby reducing its total amount reaching the lower respiratory tract. Some ventilators, such as PB840, Simens Servo, etc., are not equipped with atomization function, and can only be driven by an additional compressed air source. The external airflow will increase the tidal volume and affect the air supply of the ventilator; increasing the basic airflow is likely to cause patient triggers. Bad;] If the external air source is compressed oxygen, the actual inhaled oxygen concentration will be higher than the oxygen concentration set by the ventilator, which will cause respiratory depression for COPD patients.

2. Due to the atomization principle of the existing jet atomizer and ultrasonic atomizer, the spray atomization of the lower liquid level cannot make the airflow impact the liquid, and the vibration parts of the ultrasonic atomization mist cannot vibrate to generate the atomized liquid. drops, it will inevitably cause about 1mL-2mL of liquid medicine residue, which not only causes waste of liquid medicine but also brings difficulties to cleaning.

3. Existing jet nebulizers or ultrasonic nebulizers are often used with masks or ventilators. The nebulizer is in a continuous working state, and the generated aerosols will be discharged with the exhalation if there is no storage device, resulting in a large amount of exhaled gas. Waste of aerosols and inaccuracy of dosing.

4. The liquid level of the existing jet atomizer or ultrasonic atomizer is located below the mist outlet when in use, and there is a risk of contamination by condensed water. If it is not cleaned in time, it will cause respiratory infections.

5. Most of the existing jet atomizers or ultrasonic atomizers are bulky and require a 220v power supply, which is inconvenient to carry and use.

6. The atomization volume of some small-capacity atomizers on the market is directly related to the size of the liquid storage bottle, which is generally less than 10mL and cannot be connected to an automatic injector. In the face of long-term atomization operations, drugs need to be added in the middle and the dose cannot be well controlled. , increasing the risk of infection and operating steps.

7. According to the general consensus, atomized particles with a diameter of 1um-5um can effectively enter the lower lungs. The traditional atomization device cannot control the atomized particles well in this range. The diameter of ultrasonic atomized atomized particles is concentrated in 5um-10um, usually particles of this size will settle in the main trachea and bronchi, and cannot be administered well for diseases that require lower lung or bronchial administration, such as asthma and chronic obstructive pulmonary disease; compared with sprayed atomized particles Dispersion, 60% of the atomized particles of the partial jet atomization device are less than 1um, these particles cannot settle in the lungs and will be discharged together with the expiratory phase.

8. The mist outlet direction of the micro-mesh atomizers on the market is often downward. Such mist outlet direction will cause some droplets to settle under the air storage tank due to gravity and the movement direction of the atomized droplets.

9. Micro-mesh nebulizers on the market often have stricter inclination angle restrictions when in use, such as Jiu'an micro-mesh nebulizers, which will cause a lot of inconvenience when facing patients who are inconvenient to stand or sit.

10. Micro-mesh nebulizers on the market are often used with disposable nebulizing masks, which are expensive to use for a long time and consume more raw materials.

11. Micro-mesh nebulizers on the market often cannot directly perform oxygen ventilation during nebulization. When in use, the patient needs to remove the nebulizer device voluntarily after inhalation before exhaling, or directly set an exhalation channel to make the nebulized gas The gel is exhaled together, which is more inconvenient to use.

Based on the above reasons, it is of great significance to develop a compact and portable nebulizer with low drug residue.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the purpose of the present invention is to provide a portable micro-mesh nebulizer with small volume, less residual medicinal liquid, convenient use, and can be reused many times.

For realizing the above-mentioned technical purpose, the present invention adopts the following technical scheme:

Low-residue portable micro-mesh nebulizers, including:

Atomization device, the atomization device is integrally integrated with an electrical connector, a liquid storage chamber and a mist outlet arranged in the lateral direction, the cross section of the liquid storage chamber is gradually reduced from top to bottom, and the bottom of the liquid storage chamber is provided with A liquid outlet communicated with the mist outlet, an atomizing sheet is installed at the liquid outlet along the longitudinal direction, and two conductive probes respectively connected to the two poles of the atomizing sheet are arranged in the electrical connector ;

A drive host, the output end of the drive host is connected with the electrical connector of the atomization device, and is used to provide vibration power for the atomizing sheet in the atomization device;

A mist storage tank, the side part of the mist storage tank has a mist inlet arranged in the lateral direction, the lower end of the mist storage tank has a suction air inlet, and a first one-way valve is installed at the suction inlet ; The upper end of the mist storage tank is provided with a suction and mist supply port;

a mouthpiece, the mouthpiece has an inhalation mist inlet port, an exhalation exhaust port and a breathing mouthpiece for the patient to bite, and a second one-way valve is installed at the exhalation and exhaust port;

When the patient inhales, the first one-way valve is opened and the second one-way valve is closed, so that air or external oxygen enters the spacer, so that the aerosol aerogel in the spacer enters the patient with the inhaled airflow; the patient When exhaling, the first one-way valve is closed and the second one-way valve is opened, so that the exhaled air will not enter the spacer, preventing the exhaled air from bringing out more atomized aerogel, and the air flow directly from the mouthpiece of the mouthpiece. Air exhaust outlet.

As a preferred technical solution, the upper part of the liquid storage chamber is provided with a screw joint liquid injection port.

As a preferred technical solution, the inner side of the atomizing sheet is provided with a sealing ring, and the outer side of the atomizing sheet is provided with a fixing buckle.

As a preferred technical solution, the surface of the metal sheet of the atomizing sheet is treated with platinum electroplating.

As a preferred technical solution, the micro-holes on the atomizing sheet are 3-5 mm conical holes.

As a preferred technical solution, an oxygen channel that can be connected to an oxygen supply pipeline is provided at the inhalation and air inlet of the mist storage tank.

As a preferred technical solution, the first check valve and/or the second check valve is a diaphragm check valve.

Due to adopting the above-mentioned technical scheme, the present invention has at least the following beneficial effects:

(1) The atomization device is integrally integrated with an electrical connector, a liquid storage chamber and a mist outlet arranged in the lateral direction, and the bottom of the liquid storage chamber is provided with a liquid outlet that communicates with the mist outlet. An atomizing sheet is installed at the liquid outlet along the longitudinal direction, and two conductive probes respectively connected to the two poles of the atomizing sheet are arranged in the electrical connector. Under this highly integrated design, the atomizing device occupies a small volume , only 5.2cm*4cm*2.5cm, easy to carry.

(2) The mist outlet of the atomizing device is arranged horizontally, and the atomized aerogel generated during operation is discharged from the mist outlet and enters the mist storage tank or the breathing circuit or humidifier circuit connected to it laterally. When the atomization device and the mist storage tank are directly connected horizontally, the settlement of the atomized aerogel in the mist storage tank can be reduced, which can solve the problem of the atomized liquid droplets due to gravity and initial velocity when the atomization device and the mist storage tank adopt an upper and lower structure. Impacting the spacer can cause settling problems within the spacer. When the nebulizer is installed laterally on the breathing circuit or humidifier circuit, the inclination of the angle within the range will not affect the normal operation of the nebulizer, and the liquid level of the liquid storage chamber and the nebulizer will always be higher than the lowest point of the installation section of the circuit pipeline , which can effectively prevent the condensed water in the circuit from entering the atomization device, effectively prevent the atomization device from breeding microorganisms, and reduce the risk of infection.

(3) A first one-way valve is installed at the inhalation and air inlet of the spacer, and a second one-way valve is installed at the exhalation and exhaust port of the mouthpiece. When the patient inhales, the first one-way valve Open and close the second one-way valve to allow air or external oxygen to enter the spacer, so that the atomized aerogel in the spacer enters the patient with the inhaled airflow; when the patient exhales, the first one-way valve is closed , The second one-way valve is opened, so that the exhaled air will not enter the spacer, to prevent the exhaled air from bringing out more atomized aerogel, and the air flow is directly discharged from the exhalation exhaust port of the mouthpiece, which can effectively solve the problem of atomization. Exhalation brings out the phenomenon of atomized aerogel or the need to remove the atomizing device during atomization, which causes the problem of inconvenient breathing.

(4) The cross-section of the liquid storage chamber is gradually reduced from top to bottom. During atomization, the liquid medicine can be attached to the atomizing sheet due to the surface tension of the liquid medicine, which can reduce the residual liquid medicine in the liquid storage chamber; The liquid chamber has a large inclined surface design, and the inclination angle will not affect the use of the atomizing device within a certain range during use.

(5) The micro-holes on the atomizing sheet are 3-5mm conical holes, which can greatly reduce the formation of large particles in the atomized aerogel during atomization, make the diameter of the atomized droplets more concentrated, and increase the size of the human body. At the same time, the surface of the metal sheet of the atomized sheet is treated with platinum plating, which is not easy to chemically react with the liquid medicine, which increases the safety during use.

(6) The liquid storage chamber is provided with a screw joint liquid injection port, which can be adapted to an automatic injector to avoid respiratory infections caused by adding liquid medicine during the atomization due to the volume limitation of the liquid storage chamber. Cleaning the metering bottle can realize intermittent atomization, and adding liquid medicine in the middle will not affect the normal operation of the atomization system.

(7) The spacer can be connected to the oxygen supply pipeline, so that the atomization system can be adapted to more patients with diseases.

(8) After use, the atomizing device, mouthpiece and spacer can be soaked in disinfectant for 10 minutes, then air-dried or dried with a hair dryer and can be used again. It can be used continuously for 30 days. For continuous atomization, the atomizing device can be used continuously for 7 days, and the atomizing tank can be used for at least 6 months. The atomizing device and the spacer can be used again (personal) Effectively save patient treatment costs.

Description of drawings

The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. in:

Fig. 1 is the three-dimensional structure schematic diagram of the atomizing device in the embodiment of the present invention;

Fig. 2 is the cross-sectional structure schematic diagram of the atomizing device in the embodiment of the present invention;

3 is a schematic structural diagram of a driving host in an embodiment of the present invention;

Fig. 4 is the explosion structure schematic diagram of the mist storage tank and the mouthpiece in the embodiment of the present invention;

Fig. 5 is the structural representation when the atomizing device, the mist storage tank and the mouthpiece are assembled together;

FIG. 6 is a schematic cross-sectional structure diagram of the atomizing device, the mist storage tank and the mouthpiece after assembly.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, as those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

Referring to FIGS. 1 to 6 , the portable micro-mesh atomizer with low chemical residue includes an atomization device 1, a driving host 2, a spacer tank 3 and a mouthpiece 4, wherein:

Referring to FIGS. 1 and 2 , the atomizing device 1 has an electrical connector 11 , a liquid storage chamber 12 and a mist outlet 13 arranged in the lateral direction, and the three are integrated into one body. The bottom of the liquid storage chamber 12 is provided with The liquid outlet 14 communicated with the mist outlet 13 is provided with an atomizing sheet 15 along the longitudinal direction at the liquid outlet 14, and a sealing ring 16 is arranged on the inner side of the atomizing sheet 15. The outer side is provided with a fixed buckle 17; the electrical connector 11 is provided with two conductive probes 18 respectively connected to the two poles of the atomizing sheet 15; the above-mentioned structural design is compact, and under this highly integrated design, atomization The device occupies a small volume, only 5.2cm*4cm*2.5cm, which is easy to carry.

Referring to FIG. 2 , the inner section of the liquid storage chamber 12 is gradually reduced from top to bottom. During atomization, the liquid medicine can be attached to the atomizing sheet 15 due to the surface tension of the liquid medicine, thereby reducing the number of liquid storage chambers. At the same time, because the liquid storage chamber 12 has a relatively large inclined surface design, the inclination angle will not affect the use of the atomizing device within a certain range during use.

The upper part of the liquid storage chamber 12 is provided with a screw joint liquid injection port 19, which can be adapted to an automatic injector, so as to avoid respiratory infection caused by adding medicinal liquid during the atomization due to the volume limitation of the liquid storage chamber. When filling the liquid, open the plug at the liquid injection port of the liquid storage room, and use a measuring syringe, a measuring bottle or an automatic injector to fill the liquid storage room with the liquid. The atomization system can also operate normally in the state of -60°. When connecting the breathing circuit, the liquid level of the liquid storage chamber and the atomization device will always be higher than the lowest point of the installation section of the circuit pipeline, which can effectively prevent the condensed water of the breathing circuit from entering the atomization device. , reduce the probability of infection.

The micro-holes on the atomizing sheet 15 are 3-5 mm conical holes, and the two sides are punched with a depth of 1:4 and a taper of 30°. The traditional Chinese medicine liquid is screened out by high-frequency vibration to form atomized aerogel, which can greatly reduce the formation of large particles in the atomized aerogel during atomization, so that the diameter of the atomized droplets is more concentrated, and the atomized aerogel is formed. The number of medicinal liquid particles with a diameter of 1um-5um accounts for up to 80% of the total number of atomized particles, which is much higher than 10%-30% of ordinary atomizers. According to the consensus of clinical experts, the particles with this diameter can reach the lower lung. It has a better therapeutic effect on diseases that require lower lung administration and increases the absorption rate of the human body. At the same time, the surface of the metal sheet of the atomized sheet is treated with platinum electroplating, which is not easy to chemically react with the liquid medicine, which increases the safety during use.

Referring to FIG. 3 , the input end of the drive host 2 is powered by a USB connector, and the output end is plugged into the electrical connector 11 of the atomizing device 1. After the power is supplied, the drive host is started, which can provide vibration for the atomizing sheet 15. Power, and its driving principle is a well-known technology in the art, and will not be repeated here. The drive host 2 has two modes to choose from, namely 30min timed atomization and irregular continuous atomization, which can adapt to the atomization needs of different patients.

The nebulizing device 1 can be for personal use or hospital use. 5 and 6, in personal use, the nebulizer device 1 is directly laterally connected to the spacer 3; in hospital use, the nebulizer device 1 can be laterally connected to a breathing circuit or a humidification tank circuit. Since the mist outlet of the atomizing device is arranged horizontally, the atomized aerogel generated during operation is discharged from the mist outlet and enters the mist storage tank or the breathing circuit or humidifier circuit connected thereto laterally. When the atomization device 1 and the mist storage tank 3 are directly connected horizontally, the sedimentation of the atomized aerogel in the mist storage tank can be reduced, which can solve the problem that the atomized liquid droplets due to gravity and The initial velocity impacting the spacer causes settling problems within the spacer. When the atomizing device 1 is installed laterally on the breathing circuit or humidifier circuit, the angle inclination within the range will not affect the normal operation of the atomizing device, and the liquid level of the liquid storage chamber and the atomizing device will always be higher than the lowest installation section of the circuit pipeline. It can effectively prevent the condensed water in the circuit from entering the atomization device, effectively prevent the atomization device from breeding microorganisms, and reduce the risk of infection.

Referring to FIG. 4 to FIG. 6 , the side part of the mist storage tank 3 has a mist inlet 31 arranged in the lateral direction, and the lower end of the mist storage tank 3 has a suction inlet 32 , and the suction inlet 32 A first one-way valve 33 and an oxygen channel 34 are installed at the place. When oxygen supply is required, the mist storage tank 3 is connected to the oxygen supply pipeline through the oxygen channel 34. When no oxygen supply is required, the oxygen channel 34 is blocked with a plug cover 36. , so that the atomization system can adapt to the ventilation needs of patients with different diseases; the upper end of the spacer tank 3 has an inhalation supply port 35;

4 to 6 again, the mouthpiece 4 has an inhalation mist inlet 41, an exhalation exhaust port 42 and a breathing mouthpiece 43 for the patient to bite, and a second exhalation and exhaust port 42 is installed. One-way valve 44; when the patient inhales, the first one-way valve 33 is opened and the second one-way valve 44 is closed, so that air or external oxygen enters the spacer 3, and the atomized gas in the spacer 3 condenses The glue enters the patient's body with the inhaled airflow; when the patient exhales, the first one-way valve 33 is closed and the second one-way valve 44 is opened, so that the exhaled air will not enter the spacer 3, and the exhaled air will not bring out more mist The aerogel is dissolved, and the air flow is directly discharged from the exhalation and exhaust port 42 of the mouthpiece 4, which can effectively solve the phenomenon that the aerogel is brought out by the exhalation during atomization or needs to be removed from the atomizing device during atomization. Breathlessness problem.

The first one-way valve and the second one-way valve are preferably diaphragm-type one-way valves. Referring to FIG. 4 , the diaphragm-type one-way valve includes a valve seat 441 and a silicone film 442, and the silicone film 442 has good bending fatigue resistance. , is fixed by a plurality of inverted conical structures 443 on the valve seat 441, and can move within a certain range, and there is a through hole in the middle. The specific working principle is as follows: when inhaling, the silicone film of the one-way valve at the mouthpiece is close to the valve seat due to negative pressure to close the air flow channel, and the one-way valve on the bottom shell of the fog tank causes the middle of the silicone film due to the negative pressure. Protruding, with a through hole in the middle, the airflow smoothly enters the spacer cavity, and the atomized aerogel passes through the mouthpiece with the airflow and is then inhaled by the human body; during exhalation, the silicone film of the one-way valve on the bottom shell of the spacer is due to The positive pressure in the spacer cavity is close to the valve seat, the central through hole is covered by the platform in the middle of the valve seat, and the airflow cannot pass through, and the airflow channel is closed, and the positive pressure at the mouthpiece makes the middle of the one-way valve film at the mouthpiece bulge. , the middle of the one-way valve membrane is a through hole, and the air flow channel is opened, so that the exhaled air flow is directly discharged from the mouthpiece without the need to manually remove the mouthpiece, and also solves the problem of the atomized aerogel being brought out during exhalation; storage There is an oxygen channel on the bottom shell of the fog tank. When the oxygen is not connected, the plug cover is used to close the oxygen channel. When the oxygen is connected, the one-way valve works the same as the above.

Before use, make sure that all parts are properly connected. If there is no external oxygen, you need to check whether the plug cover of the oxygen channel is plugged tightly. Only after adding the liquid medicine, you can plug in the USB connector for power supply. Set the nebulization time according to the doctor's instructions or the patient's needs. When it is observed that the nebulized aerogel starts to be stored in the spacer, the patient can use the mouthpiece to breathe until the nebulization ends.

After atomization, use CIDEX, NU-CIDEX or Cidex OPA to immerse and sterilize the atomization device, mouthpiece and spacer, and then naturally dry or dry as needed, and store them properly for the next atomization needs. . For 3mL nebulization treatment 4 times a day, the nebulizer device can be used continuously for up to 30 days, for continuous nebulization, the nebulizer device can be used continuously for 7 days, and the nebulizer tank can be used for at least 6 months for a long time. The reusable (individual) of the chemical device and the spacer can effectively save the cost of patient treatment.

The above descriptions are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Equivalent changes and modifications made by any person skilled in the art without departing from the concept and principles of the present invention shall fall within the protection scope of the present invention.

Claims (7)

1. Portable micro-mesh atomizer with low medicinal liquid residue, is characterized in that, comprises: Atomization device, the atomization device is integrally integrated with an electrical connector, a liquid storage chamber and a mist outlet arranged in the lateral direction, the cross section of the liquid storage chamber is gradually reduced from top to bottom, and the bottom of the liquid storage chamber is provided with A liquid outlet communicated with the mist outlet, an atomizing sheet is installed at the liquid outlet along the longitudinal direction, and two conductive probes respectively connected to the two poles of the atomizing sheet are arranged in the electrical connector ; A drive host, the output end of the drive host is connected with the electrical connector of the atomization device, and is used to provide vibration power for the atomizing sheet in the atomization device; A mist storage tank, the side part of the mist storage tank has a mist inlet arranged in the lateral direction, the lower end of the mist storage tank has a suction air inlet, and a first one-way valve is installed at the suction inlet ; The upper end of the mist storage tank is provided with a suction and mist supply port; a mouthpiece, the mouthpiece has an inhalation mist inlet port, an exhalation exhaust port and a breathing mouthpiece for the patient to bite, and a second one-way valve is installed at the exhalation and exhaust port; When the patient inhales, the first one-way valve is opened and the second one-way valve is closed, so that air or external oxygen enters the spacer, so that the aerosol aerogel in the spacer enters the patient with the inhaled airflow; the patient When exhaling, the first one-way valve is closed and the second one-way valve is opened, so that the exhaled air will not enter the spacer, preventing the exhaled air from bringing out more atomized aerogel, and the air flow directly from the mouthpiece of the mouthpiece. Air exhaust outlet. 2 . The portable micro-mesh atomizer with low medicinal liquid residue according to claim 1 , wherein the upper part of the liquid storage chamber is provided with a screw joint liquid injection port. 3 . 3 . The portable micro-mesh atomizer with low medicinal liquid residue according to claim 1 , wherein a sealing ring is arranged on the inner side of the atomizing sheet, and a fixing buckle is arranged on the outer side of the atomizing sheet. 4 . 4 . The portable micro-mesh atomizer with low chemical residue according to claim 1 , wherein the surface of the metal sheet of the atomizing sheet is treated with platinum electroplating. 5 . 5 . The portable micro-mesh atomizer with low medicinal liquid residue according to claim 1 , wherein the micro-holes on the atomizing sheet are 3-5 mm conical holes. 6 . 6 . The portable micro-mesh nebulizer with low medicinal liquid residue according to claim 1 , wherein an oxygen channel which can be connected with an oxygen supply pipeline is provided at the inhalation and air inlet of the mist storage tank. 7 . 7. The portable micro-mesh atomizer with low medicinal liquid residue according to any one of claims 1 to 6, wherein the first one-way valve and/or the second one-way valve are diaphragm type one-way valves valve.

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