Patent Description:
In the treatment of respiratory system diseases, an atomization inhalation therapy is an important and effective treatment. The atomization inhalation therapy is to atomize medicinal liquid into tiny droplets by using an atomizer. Patients inhale the medicinal liquid into the respiratory tracts and the lungs through breathing, and the medicinal liquid is deposited in the respiratory tracts or the lungs, so as to achieve the purpose of painless, rapid and effective treatment.

After being used by the patients, the conventional atomizer usually does not stop working until the medicinal liquid in the atomizer is consumed, an atomized dose of the medicinal liquid cannot be precisely controlled, and it is easy for the patients to inhale an excessive dose of the medicinal liquid or an insufficient dose of the medicinal liquid. As a result, an expected treatment effect cannot be achieved.

<CIT> provides self-puncturing liquid drug cartridges and an associated inhaler used to deliver one or more separate doses of an aerosolized liquid drug. A cartridge includes a needle assembly coupled to a drug container. The needle assembly includes a hollow needle and is reconfigurable from a first configuration to a second configuration upon insertion of the cartridge into the inhaler. In the first configuration, the hollow needle does not extend into the container. In the second configuration, the hollow needle extends into the container. The inhaler includes an aerosol generator that includes a vibratable membrane that aerosolizes liquid drug ejected from the cartridge for inhalation by a patient.

<CIT> provides an aerosolization system, and the aerosolization system includes a squeezable container having a resilient container body. The container is configured to deliver a unit dosage of a liquid when squeezed a single time. The system also includes an aerosolizer that is constructed of a housing defining a mouthpiece, and an aerosol generator disposed in the housing. The aerosol generator includes a vibratable membrane having a front face and a rear face, and a vibratable element used to vibrate the membrane. Further, the housing includes an opening that is adapted to receive a unit dosage of the liquid from the container. The opening provides a liquid path to the rear face of the vibratable membrane.

<CIT> provides a hand-held inhalation responsive nebuliser by which a nebulised air stream is created for quick and efficient delivery of a fluid medication to the respiratory tract of a patient through the deep lung. The nebuliser includes a normally open electrical switch and a rotatable trigger ring extending laterally across an air flow path through which a supply of non-medicated ambient air is drawn during inhalation by the patient. The ambient air supply drawn through the nebuliser causes the trigger ring to rotate into contact with and close the electrical switch, whereby a piezoelectric disk is energized to vibrate an emitter mesh. A metered volume of fluid medication delivered to the emitter mesh from a pre-filled medication cartridge is accelerated and pulled through the mesh as a fine mist of fluid droplets to form a nebulised medication plume. The nebulised medication plume is mixed in the mouthpiece of the nebuliser with the supply of non-medicated ambient air to create the nebulised air stream.

<CIT> provides an ultrasonic droplet delivery device and related methods for delivering precise and repeatable amounts of a substance to a user for respiratory use. The ultrasonic droplet delivery device generally includes a body housing, a mouthpiece having an ejector mechanism, and a fluid cartridge having at least one fluid reservoir. In certain embodiments, the ejector mechanism may include at least one ultrasonic actuator and at least one aperture plate with a plurality of openings formed through its thickness for ejecting droplets. The device may further include at least one differential pressure sensor configured to activate the ejector mechanism upon sensing a pre-determined pressure change within the device to thereby generate the ejected stream of droplets.

<CIT> provides an ultrasonic atomization device that can prevent clogging without reducing the amount of atomization when dispensing atomized chemical liquid by ultrasonic vibration. The ultrasonic atomization device includes a liquid medicine holding portion that holds a liquid (e.g., liquid medicine) and an ultrasonic generator having a piezoelectric element that generates ultrasonic waves to make the liquid vibrate. The atomizing plate has a deformation opening forming plate that ejects the atomized liquid medicine. The ultrasonic atomization device further includes a liquid medicine conveying mechanism for conveying the liquid medicine atomized by the deformation opening forming plate, and a measuring unit for measuring the liquid medicine that is kept in the liquid medicine holding portion.

<CIT> provides a portable insulin nebulization drug delivery device, which is provided with a blood glucose detection device, a blood glucose analysis circuit, an ultrasonic circuit for controlling the dosage of administration, a microporous ultrasonic nebulization tablet, etc. The blood glucose analysis circuit automatically inputs the data after the detection and analysis of the patient's blood sample test strip into the ultrasonic circuit for controlling the dosage of administration, and the ultrasonic circuit for controlling the dosage of administration automatically sets the atomized insulin dosage. When inhaling the medicine, the microporous ultrasonic nebulization tablet is energized to work, and the liquid medicine vibrates out from the micropores of several atomizers on the microporous ultrasonic nebulization tablet, and the drug mist particles are inhaled into the alveoli through the nebula nozzle and enter the blood to absorb and take effect, so as to achieve the purpose of controlling blood sugar.

In view of this, the present disclosure provides an electronic atomization device, to resolve the technical problem that an atomized dose of medicinal liquid cannot be precisely controlled in the related art.

To resolve the foregoing technical problem, a first technical solution provided in the present disclosure is to provide an electronic atomization device, and the invention is set out in the appended set of claims.

Beneficial effects of the present disclosure are as follows: Different from the related art, the electronic atomization device in the present disclosure includes a microporous atomizing sheet and a needle tube, where one end of the needle tube is spaced apart from the microporous atomizing sheet, and the other end of the needle tube is configured to be inserted into a liquid storage assembly. Liquid in the liquid storage assembly is conveyed to the microporous atomizing sheet by using the needle tube, to precisely control an atomized dose, which can prevent a patient from inhaling excessive medicinal liquid or insufficient medicinal liquid, thereby achieving an expected therapeutic effect for an atomization inhalation therapy.

To describe the technical solutions in the embodiments of the present disclosure more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show only some embodiments of the present disclosure, and a person of ordinary skill in the art may still derive other accompanying drawings from these accompanying drawings without creative efforts.

The present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be specifically noted that, the following embodiments are merely used for describing the present disclosure rather than limiting the scope of the present disclosure. Similarly, the following embodiments are merely some rather than all of the embodiments of the present disclosure, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

The terms "first", "second", and "third" in the present disclosure are merely intended for a purpose of description, and shall not be understood as indicating or implying an indication or implication of relative importance or implicitly indicating indication of the number of indicated technical features. Therefore, features defining "first", "second", and "third" can explicitly or implicitly include at least one of the features. In description of the present disclosure, "more" means at least two, such as two and three unless it is specifically defined otherwise. All directional indications (for example, up, down, left, right, front, back. ) in the embodiments of the present disclosure are only used for explaining relative position relationships, movement situations, or the like between the various components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications change accordingly. Terminologies "comprise", "have", and any variations thereof in the embodiments of the present disclosure are intended to indicate non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but further optionally includes a step or unit that is not listed, or further optionally includes another step or component that is intrinsic to the process, method, product, or device.

"Embodiment" mentioned in the specification means that particular features, structures, or characteristics described with reference to the embodiment may be included in at least one embodiment of the present disclosure. The term appearing at different positions of the specification may not refer to the same embodiment or an independent or alternative embodiment that is mutually exclusive with another embodiment. A person skilled in the art explicitly or implicitly understands that the embodiments described in the specification may be combined with other embodiments.

<FIG> is a schematic structural diagram of an electronic atomization device according to the present disclosure.

The electronic atomization device may be used to atomize liquid substrates such as medicinal liquid and is applied to medical equipment for treating diseases of upper and lower respiratory, to atomize medical drugs. The electronic atomization device includes an atomization assembly <NUM>, a liquid storage assembly <NUM>, and a control assembly <NUM>. During use, the atomization assembly <NUM> and the liquid storage assembly <NUM> are mounted on the control assembly <NUM>. The liquid storage assembly <NUM> is configured to store medicinal liquid. The atomization assembly <NUM> is configured to atomize the liquid in the liquid storage assembly <NUM>. The control assembly <NUM> includes a controller <NUM> and a mounting cavity <NUM>, the atomization assembly <NUM> and the liquid storage assembly <NUM> are mounted in the mounting cavity <NUM>, and the control assembly <NUM> is configured to convey the liquid in the liquid storage assembly <NUM> to the atomization assembly <NUM> and control operation of the atomization assembly <NUM>.

The atomization assembly <NUM>, the liquid storage assembly <NUM>, and the control assembly <NUM> may be integrally arranged or detachably connected, which are designed according to specific requirements.

<FIG> is a schematic cross-sectional view of an atomization assembly according to the present disclosure.

The atomization assembly <NUM> includes an atomization shell <NUM>, an atomization base <NUM>, a microporous atomizing sheet <NUM>, and a needle tube <NUM>. The microporous atomizing sheet <NUM> is arranged on one end of the atomization base <NUM> and is engaged with an end portion of the atomization base <NUM> to form an atomization chamber <NUM>. The extending direction of the needle tube <NUM> is perpendicular to the extending direction of the microporous atomizing sheet <NUM>. Another angle, for example, between <NUM> degrees and <NUM> degrees, may alternatively be formed between the extending direction of the needle tube <NUM> and the extending direction of the microporous atomizing sheet <NUM>, which is designed as required. The needle tube <NUM> is fixed to the atomization base <NUM>. One end of the needle tube <NUM> is arranged in the atomization chamber <NUM> and is spaced apart from the microporous atomizing sheet <NUM>. During use, the other end of the needle tube <NUM> is inserted into the liquid storage assembly <NUM>, to convey the liquid in the liquid storage assembly <NUM> to the microporous atomizing sheet <NUM> to form to-be-atomized liquid. The microporous atomizing sheet <NUM> is configured to atomize the to-be-atomized liquid. The to-be-atomized liquid is attached between the microporous atomizing sheet <NUM> and the needle tube <NUM> through surface tension. A suction nozzle portion <NUM> is formed or arranged on one end of the atomization shell <NUM>, and the microporous atomizing sheet <NUM>, the needle tube <NUM>, and the atomization base <NUM> are arranged in the atomization shell <NUM> together. The suction nozzle portion <NUM> is in communication with the atomization chamber <NUM> enclosed by the microporous atomizing sheet <NUM> and the atomization base <NUM>, and a user inhales, through the suction nozzle portion <NUM>, medicinal liquid atomized by the microporous atomizing sheet <NUM>.

<FIG> is a three-dimensional structural diagram of an atomization base in an atomization assembly according to the present disclosure. <FIG> is a three-dimensional structural diagram of a first seal member in an atomization assembly according to the present disclosure.

A mounting groove <NUM> is provided on the end of the atomization base <NUM>, and the mounting groove <NUM> is configured to mount the microporous atomizing sheet <NUM>. The shape of the mounting groove <NUM> matches the shape of the microporous atomizing sheet <NUM>. A first seal member <NUM> is arranged on a periphery of the microporous atomizing sheet <NUM>, and the microporous atomizing sheet <NUM> and the first seal member <NUM> are together arranged in the mounting groove <NUM>. The first seal member <NUM> can fix the microporous atomizing sheet <NUM>, to prevent the microporous atomizing sheet <NUM> from shaking on the end of the atomization base <NUM> with affecting operation of the medicinal liquid atomization process.

The microporous atomizing sheet <NUM> includes a piezoelectric ceramic plate, a metal baseplate, a first electrode, and a second electrode. The first electrode is electrically connected to the piezoelectric ceramic plate, the second electrode is electrically connected to the metal baseplate, and both the first electrode and the second electrode are electrically connected to the controller <NUM>. The metal baseplate is a circular plate, the piezoelectric ceramic plate is a circular ring, and the diameter of the metal baseplate is greater than the inner diameter of the piezoelectric ceramic plate. A through hole is provided in a central region of the piezoelectric ceramic plate, and a region of the metal baseplate corresponding to the central region of the piezoelectric ceramic plate is provided with a plurality of micropores. That is, the microporous atomizing sheet <NUM> includes a microporous region, the microporous region is provided with a plurality of micropores, and the suction nozzle portion <NUM> is in communication with the atomization chamber <NUM> by using the plurality of micropores. In this embodiment, the central region of the metal baseplate protrudes toward the suction nozzle portion <NUM>, to provide a relatively large adhesion surface for the to-be-atomized liquid, thereby increasing adhesion of the to-be-atomized liquid. In another implementation, the metal baseplate may be a planar structure, which is selected as required. This is not limited in the present disclosure.

The first seal member <NUM> includes a first panel <NUM>, a second panel <NUM>, and a side wall <NUM>. The first panel <NUM> is arranged opposite to the second panel <NUM>. The first panel <NUM> is arranged on one end of the side wall <NUM>, and the second panel <NUM> is arranged on the other end of the side wall <NUM>. That is, the first panel <NUM> and the second panel <NUM> are arranged at an interval on the side wall <NUM>, and the side wall <NUM> connects the first panel <NUM> and the second panel <NUM>. In an embodiment, the side wall <NUM> connects the edge of the first panel <NUM> and the edge of the second panel <NUM> to form an integral structure. Preferably, the first panel <NUM>, the second panel <NUM>, and the side wall <NUM> are integrally formed. The first seal member <NUM> is made of rubber, silicone, or the like.

The first panel <NUM> is arranged on a side of the second panel <NUM> close to the suction nozzle portion <NUM>. All the first panel <NUM>, the second panel <NUM>, and the side wall <NUM> are circular ring structures. The outer diameter of the first panel <NUM> is the same as the outer diameter of the second panel <NUM>. The inner diameter of the first panel <NUM> may be the same as or different from the inner diameter of the second panel <NUM>, which is designed as required. The inner diameter of the side wall <NUM> is the same as the outer diameter of the first panel <NUM> and the outer diameter of the second panel <NUM>. The thickness of the first panel <NUM> is the same as the thickness of the second panel <NUM>, and a difference between the outer diameter and the inner diameter of the side wall <NUM> is the same as the thickness of the first panel <NUM> and the thickness of the second panel <NUM>.

The first panel <NUM>, the second panel <NUM>, and the side wall <NUM> together enclose an atomizing sheet cavity <NUM> for accommodating the microporous atomizing sheet <NUM>. That is, the microporous atomizing sheet <NUM> is located between the first panel <NUM> and the second panel <NUM> and is not located beyond the region enclosed by the side wall <NUM>. A center through hole of the first panel <NUM> is in communication with a center through hole of the second panel <NUM> and can expose the microporous region on the microporous atomizing sheet <NUM>. In an embodiment, the first panel <NUM> and the second panel <NUM> are coaxially arranged, and the inner diameter of the first panel <NUM> is greater than the inner diameter of the second panel <NUM>.

An opening <NUM> is provided on the first seal member <NUM>, to facilitate mounting of the microporous atomizing sheet <NUM> into the atomizing sheet cavity <NUM>. In this embodiment, the opening <NUM> is provided at a joint of the side wall <NUM> and the first panel <NUM>, that is, the opening <NUM> is formed by cutting off a piece of the edge of the first seal member <NUM>. The opening <NUM> may alternatively be provided on the side wall <NUM>, provided that the microporous atomizing sheet <NUM> can be mounted in the atomizing sheet cavity <NUM>, which is not limited in the present disclosure.

In another implementation, the microporous atomizing sheet <NUM> may alternatively be in another shape such as a square, the structure of the first seal member <NUM> matches that of the microporous atomizing sheet <NUM>, and the shape of the mounting groove <NUM> matches that of the microporous atomizing sheet, which is selected as required.

Still referring to <FIG>, a protrusion <NUM> is arranged on the bottom wall of the mounting groove <NUM>, and the height of the protrusion <NUM> is the same as the thickness of the second panel <NUM>. The protrusion <NUM> is embedded in the central through hole of the second panel <NUM>. A hole <NUM> is provided on the protrusion <NUM>, and the hole <NUM> corresponds to the microporous region of the microporous atomizing sheet <NUM>. That is, the end of the atomization base <NUM> engaged with the microporous atomizing sheet <NUM> is provided with the hole <NUM>, the microporous atomizing sheet <NUM> covers the hole <NUM>, the microporous region is suspended in the hole <NUM>, and the microporous atomizing sheet <NUM> is engaged with the hole <NUM> to form the atomization chamber <NUM>. An annular groove <NUM> is provided around the hole <NUM> on the protrusion <NUM> for mounting a second seal member <NUM>. The size of the annular groove <NUM> matches the size of the second seal member <NUM>. That is, the end of the atomization base <NUM> engaged with the microporous atomizing sheet <NUM> is provided with the annular groove <NUM>, and the second seal member <NUM> is arranged in the annular groove <NUM>. A non-microporous region of the microporous atomizing sheet <NUM> covers the annular groove <NUM>. The second seal member <NUM> is annular, and the second seal member <NUM> is made of rubber, silicone, or the like. The annular groove <NUM> is annular. The second seal member <NUM> is configured to prevent liquid pumped by the needle tube <NUM> from leaking out of the atomization chamber <NUM>, causing the precision of the atomized dose of the medicinal liquid to be reduced. That is, the annular groove <NUM> is provided on the protrusion <NUM>, and the second seal member <NUM> is arranged in the annular groove <NUM>. A projection of the annular groove <NUM> is on a plane in which the microporous atomizing sheet <NUM> is located, and the annular groove <NUM> is arranged around the microporous region of the microporous atomizing sheet <NUM>, that is, the inner diameter of the annular groove <NUM> is greater than the diameter of the microporous region.

In an embodiment, the cross section of the protrusion <NUM> is circular, the cross section of the hole <NUM> is circular, and the protrusion and the opening are concentrically arranged. The outer diameter of the annular groove <NUM> is equal to the inner diameter of the through hole of the central region of the piezoelectric ceramic plate of the microporous atomizing sheet <NUM>. The second seal member <NUM> is arranged around the microporous region and abuts against the metal baseplate of the microporous atomizing sheet <NUM>.

During specific implementation, the hole <NUM> may be a through hole or a blind hole. Specifically, the pore size of the hole <NUM> is greater than the outer diameter of the needle tube <NUM>, and the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM> is spaced apart from the side wall of the hole <NUM>. In this embodiment, the hole <NUM> is the through hole, and the atomization chamber <NUM> is an open structure, so that reversely sprayed medicinal liquid can flow out of the atomization chamber <NUM> along the side wall of the atomization chamber <NUM>, to avoid the impact of the reversely sprayed medicinal liquid on the atomization process. In another implementation, the hole <NUM> is the blind hole, and the atomization chamber <NUM> is a closed structure, so that the reversely sprayed medicinal liquid can flow from the side wall of the atomization chamber <NUM> to the microporous atomizing sheet <NUM> and finally is deposited on the bottom of the atomization chamber <NUM>, to avoid the impact of the reversely sprayed medicinal liquid on the atomization process. That is, the end of the atomization base <NUM> engaged with the microporous atomizing sheet <NUM> is provided with the hole <NUM>, to enable the reversely sprayed medicinal liquid to flow to a direction away from the microporous atomizing sheet <NUM> along the side wall of the atomization chamber <NUM> during atomization of the microporous atomizing sheet <NUM>, so as to prevent the reversely sprayed medicinal liquid from forming bubbles or a water film between the needle tube <NUM> and the microporous atomizing sheet <NUM> after the medicinal liquid has been atomized, which causes the controller <NUM> to be unable to accurately detect whether the to-be-atomized liquid still exists and further causes the controller <NUM> to continue to control the microporous atomizing sheet <NUM> to perform atomization, resulting in a problem of dry heating, and affecting a service life of the electronic atomization device.

In another implementation, the pore size of the hole <NUM> is equal to the outer diameter of the needle tube <NUM>, and the micro atomization chamber <NUM> formed by engaging the microporous atomizing sheet <NUM> and the end portion of the atomization base <NUM> is a closed structure and can precisely control the amount of the atomized liquid. It may be understood that the reversely sprayed medicinal liquid cannot flow to a direction away from the microporous atomizing sheet <NUM> along the side wall of the atomization chamber <NUM> through the micro atomization chamber <NUM> of this structure, and the reversely sprayed medicinal liquid affects the atomization process to some extent. In addition, the atomization chamber <NUM> is the micro atomization chamber <NUM>, and the closed structure also has a probabilistic problem that the liquid is attached to the bottom of the closed structure and cannot be atomized.

Still referring to <FIG>, the atomization chamber <NUM>, the needle tube <NUM>, and the microporous region of the microporous atomizing sheet <NUM> are coaxially arranged. The area of a maximum cross section of the atomization chamber <NUM> is less than four times the area of the microporous region of the microporous atomizing sheet <NUM>. In this embodiment, both the cross section of the atomization chamber <NUM> and the cross section of the microporous region are circular, and the diameter of the atomization chamber <NUM> is greater than the diameter of the microporous region and is less than twice the diameter of the microporous region. Specifically, the diameter of the atomization chamber <NUM> ranges from <NUM> to <NUM>, the distance between the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM> and the side wall of the atomization chamber <NUM> ranges from <NUM> to <NUM>, so that the to-be-atomized liquid pumped by using the needle tube <NUM> is attached between the microporous atomizing sheet <NUM> and the needle tube <NUM>, for atomizing the medicinal liquid at any angle, thereby precisely controlling the atomized does of the medicinal liquid. If the diameter of the atomization chamber <NUM> is excessively large, for example, greater than <NUM>, and the medicinal liquid attached outside the microporous region is increased, an area in which the medicinal liquid is sprayed reversely is increased, the amount of reversely sprayed liquid is increased, and the precision of a dose of the medicinal liquid inhaled by the user is reduced. If the diameter of the atomization chamber <NUM> is excessively small, for example, less than <NUM>, the to-be-atomized liquid may further flow out to the side wall of the atomization chamber in addition to being attached between the microporous atomizing sheet <NUM> and the needle tube <NUM>, the residual amount of unatomized medicinal liquid is increased, and the precision of the dose of the medicinal liquid inhaled by the user is reduced.

In an embodiment, the atomization chamber <NUM> is formed by using the hole <NUM> and the microporous atomizing sheet <NUM>, and the diameter of the atomization chamber <NUM> is the pore size of the hole <NUM>.

The distance between the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM> and the microporous atomizing sheet <NUM> ranges from <NUM> to <NUM>. If the distance between the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM> and the microporous atomizing sheet <NUM> is too long, for example, greater than <NUM>, the amount of medicinal liquid attached on the side wall of the atomization chamber <NUM> is increased, a part of the medicinal liquid cannot be attached on the microporous atomizing sheet <NUM> and cannot be atomized, and the precision of the dose of the medicinal liquid inhaled by the user is reduced. If the distance between the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM> and the microporous atomizing sheet <NUM> is too short, for example, less than <NUM>, the medicinal liquid forms bubbles or a water film between the needle tube <NUM> and the microporous atomizing sheet <NUM> after the medicinal liquid has been atomized. Consequently, the controller <NUM> cannot accurately detect whether the to-be-atomized liquid still exists, and the controller <NUM> continues to control the microporous atomizing sheet <NUM> to perform atomization, resulting in a problem of dry heating, and affecting a service life of the electronic atomization device.

In an implementation, the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM> is provided with a tube cover <NUM>, and the outer wall of the tube cover <NUM> is spaced apart from the side wall of the atomization chamber <NUM>. The tube cover <NUM> is configured to increase the surface area of the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM>, that is, increase a liquid attachment area of the needle tube <NUM>, so as to increase the adhesion of the to-be-atomized liquid. Therefore, the to-be-atomized liquid pumped by the needle tube <NUM> is better attached between the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM> and the microporous atomizing sheet <NUM>. In this embodiment, the tube cover <NUM> is a hollow cylindrical structure, the inner diameter of the tube cover <NUM> is the same as the outer diameter of the needle tube <NUM>, and the outer diameter of the tube cover is less than the diameter of the hole <NUM>. The tube cover <NUM> is made of silicone, rubber, or the like. The tube cover <NUM> may alternatively be a solid structure, provided that the needle tube <NUM> is inserted into the tube cover <NUM>.

The needle tube <NUM> is a hollow metal piece. In this embodiment, the needle tube <NUM> is a cylindrical metal tube, the inner diameter of the needle tube <NUM> ranges from <NUM> to <NUM>, and the needle tube <NUM> is preferably made of stainless steel. The needle tube <NUM> may alternatively be a hollow metal piece in another structure, provided that the liquid in the liquid storage assembly <NUM> can be pumped to the microporous atomizing sheet <NUM> to form the to-be-atomized liquid. The material of the needle tube <NUM> only needs to not react with the to-be-atomized medicinal liquid and cause the medicinal liquid to deteriorate.

In an implementation, the needle tube <NUM> may further be configured for detection. A conductor <NUM> is arranged on the needle tube <NUM>, and the conductor <NUM> is electrically connected to the controller <NUM>. In this embodiment, a pogo pin is selected for the conductor <NUM>. In another implementation, another element may alternatively be selected for the conductor <NUM>, provided that the needle tube <NUM> is electrically connected to the controller <NUM> through the conductor <NUM>.

The metal baseplate in the microporous atomizing sheet <NUM> is electrically connected to the controller <NUM> through a wire, the needle tube <NUM> is electrically connected to the controller <NUM> through the conductor <NUM> and a wire, and the needle tube <NUM> and the metal baseplate form an impedance sensor, that is, the needle tube <NUM> and the metal baseplate in the microporous atomizing sheet <NUM> are equivalent to two metal electrodes. After the liquid in the liquid storage assembly <NUM> is pumped by the needle tube <NUM>, the to-be-atomized liquid is attached between the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM> and the microporous atomizing sheet <NUM>, to conduct the metal baseplate in the microporous atomizing sheet <NUM> and the needle tube <NUM>, and a resistance value between the metal baseplate in the microporous atomizing sheet <NUM> and the needle tube <NUM> is small, about <NUM>. After the to-be-atomized liquid is atomized, no to-be-atomized liquid exists between the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM> and the microporous atomizing sheet <NUM>, the metal baseplate in the microporous atomizing sheet <NUM> and the needle tube <NUM> are in an open circuit state, and a resistance value between the metal baseplate in the microporous atomizing sheet <NUM> and the needle tube <NUM> is far greater than <NUM> and is also greater than the resistance value between the metal baseplate in the microporous atomizing sheet <NUM> and the needle tube <NUM> in a conduction state through the to-be-atomized liquid.

Whether the to-be-atomized liquid exists can be determined by detecting the resistance value between the metal baseplate in the microporous atomizing sheet <NUM> and the needle tube <NUM> by using the controller <NUM>. That is, if the resistance value between the metal baseplate in the microporous atomizing sheet <NUM> and the needle tube <NUM> detected by the controller <NUM> is close to <NUM>, it is determined that the to-be-atomized liquid exists between the microporous atomizing sheet <NUM> and the needle tube <NUM>, and the microporous atomizing sheet <NUM> is controlled to atomize the to-be-atomized liquid. If the resistance value between the metal baseplate in the microporous atomizing sheet <NUM> and the needle tube <NUM> detected by the controller <NUM> is far greater than <NUM>, it is determined that the to-be-atomized liquid between the microporous atomizing sheet <NUM> and the needle tube <NUM> is about to be consumed or has been consumed, so that the microporous atomizing sheet <NUM> is controlled to stop working directly or with a delay (a specific value of the delay is set according to experience, for example, <NUM>).

In another implementation, the needle tube <NUM> is made of silicone, plastic, or the like. In this case, the needle tube <NUM> does not have a detection function and can only be configured to pump the liquid in the liquid storage assembly <NUM> to the microporous atomizing sheet <NUM>.

Due to the surface tension and the adhesion of the liquid, the liquid is attached on the microporous atomizing sheet <NUM> after being pumped out from the needle tube <NUM>. The liquid is located between the end of the needle tube <NUM> close to the microporous atomizing sheet <NUM> and the microporous atomizing sheet <NUM> and spreads around to reach the front edge of the atomization chamber <NUM>. During operation, the microporous atomizing sheet <NUM> changes the liquid into a spray, and the spray is sprayed out from the suction nozzle portion <NUM>. During atomization, with consumption of the liquid, under the action of atmospheric pressure, unatomized liquid continuously moves to the microporous region of the microporous atomizing sheet <NUM> and is finally atomized completely. Under the comprehensive effect of the surface tension and the adhesion of the liquid and the atmospheric pressure, the liquid conveyed by the needle tube <NUM> and the liquid atomization process are completely free from the constraints of direction and gravity. Therefore, in another implementation, the needle tube <NUM> may alternatively be parallel to the microporous atomizing sheet <NUM>, other structures are changed accordingly, and the working principles of the needle tube <NUM> and the microporous atomizing sheet <NUM> are the same as the foregoing.

The end of the atomization base <NUM> away from the microporous atomizing sheet <NUM> is provided with an accommodating groove <NUM>, and the accommodating groove <NUM> is configured to accommodate the liquid storage assembly <NUM>. The end of the needle tube <NUM> away from the microporous atomizing sheet <NUM> is arranged in the accommodating groove <NUM>, to enable the end of the needle tube <NUM> away from the microporous atomizing sheet <NUM> to be inserted into the liquid storage assembly <NUM>, so as to pump the liquid in the liquid storage assembly <NUM> to the microporous atomizing sheet <NUM>. <FIG> is a schematic exploded view of a liquid storage assembly according to the present disclosure.

The liquid storage assembly <NUM> includes a liquid storage shell <NUM>, a liquid storage cover <NUM>, a seal plug <NUM>, and a piston <NUM>. One end of the liquid storage shell <NUM> is provided with the liquid storage cover <NUM>, and the other end of the liquid storage shell is provided with the piston <NUM>. One end of the liquid storage cover <NUM> close to the liquid storage shell <NUM> is provided with the seal plug <NUM>, and the seal plug <NUM> is configured to seal the liquid storage shell <NUM>, to prevent the liquid in the liquid storage assembly <NUM> from leaking. A space enclosed by the liquid storage shell <NUM>, the seal plug <NUM>, and the piston <NUM> together is a liquid storage tank, and the liquid storage tank is configured to store the to-be-atomized liquid. An opening may be provided on the liquid storage cover <NUM>, to expose a part of the seal plug <NUM>.

The liquid storage assembly <NUM> is mounted in the mounting cavity <NUM> of the control assembly <NUM>, and the end of the liquid storage assembly <NUM> provided with the seal plug <NUM> faces toward an opening of the mounting cavity <NUM>, to facilitate insertion of the needle tube <NUM> in the atomization assembly <NUM> into the liquid storage assembly <NUM>. The end of the liquid storage assembly <NUM> provided with the piston <NUM> faces toward the bottom of the mounting cavity <NUM>, so that a component in the control assembly <NUM> pushes the piston <NUM>, to convey the liquid in the liquid storage assembly <NUM> to the needle tube <NUM>, so as to reach the microporous atomizing sheet <NUM>.

<FIG> is a schematic structural diagram of a first embodiment of a control assembly according to the present disclosure. The control assembly <NUM> further includes a control shell <NUM>, an accommodating base <NUM>, a push rod <NUM>, a drive member <NUM>, and a battery <NUM>.

One end of the control shell <NUM> is provided with the mounting cavity <NUM>, and the mounting cavity <NUM> is configured to accommodate the atomization assembly <NUM> and a part of the liquid storage assembly <NUM>. The part of the liquid storage assembly <NUM> is arranged in the accommodating groove <NUM> of the atomization assembly <NUM> and is accommodated in the mounting cavity <NUM> together with the atomization assembly <NUM>. The structure of the mounting cavity <NUM> may be a ring. In this embodiment, the mounting cavity <NUM> is a circular ring. The mounting cavity <NUM> and the control shell <NUM> are fixed together through adhesive, bolts, or the like. Preferably, the mounting cavity <NUM> and the control shell <NUM> are integrally formed. In an embodiment, the control shell <NUM> includes a top wall and a bottom wall that are spaced apart from each other and an annular side wall that connects the top wall and the bottom wall. A through hole is provided at a position of the top wall close to the side wall and is used as the mounting cavity <NUM>, and the internal space of the control shell <NUM> is in communication with the outside through the through hole.

The accommodating base <NUM> is arranged in the control shell <NUM> and is fixedly connected to the control shell <NUM>.

The accommodating base <NUM> is arranged on one end of the mounting cavity <NUM> close to the bottom wall of the control shell <NUM>, and the internal space of the accommodating base <NUM> is in communication with the mounting cavity <NUM>. The accommodating base <NUM> and the mounting cavity <NUM> may be integrally formed. The accommodating base <NUM> is configured to accommodate the part of the liquid storage assembly <NUM>. After the atomization assembly <NUM> is inserted into the mounting cavity <NUM>, one end of the accommodating base <NUM> close to the mounting cavity <NUM> is fixedly connected to the atomization base <NUM> in the atomization assembly <NUM> in a manner such as bolts, fastening, or magnetic member adsorption. In this embodiment, the end of the accommodating base close to the mounting cavity and the atomization base are fixed through bolts. Both the end of the accommodating base <NUM> close to the mounting cavity <NUM> and one end of the atomization base <NUM> close to the accommodating base <NUM> are provided with mounting structures (for example, mounting holes), to fix the atomization base <NUM> and the accommodating base <NUM> together.

The push rod <NUM> is arranged on one end of the accommodating base <NUM> away from the mounting cavity <NUM>. The push rod <NUM> is movably connected to the accommodating base <NUM>, and the push rod <NUM> abuts against the liquid storage assembly <NUM> arranged in the accommodating base <NUM>.

One end of the push rod <NUM> is partially accommodated in the accommodating base <NUM>, and one end of the push rod <NUM> close to the drive member <NUM> and the drive member <NUM> are located outside the accommodating base.

The drive member <NUM> is arranged on the end of the push rod <NUM> away from the accommodating base <NUM>. The drive member <NUM> is configured to drive the push rod <NUM> to move toward the liquid storage assembly <NUM>, to enable the push rod <NUM> to push the piston <NUM> in the liquid storage assembly <NUM> to move toward the atomization assembly <NUM>, so as to convey the liquid in the liquid storage assembly <NUM> to the microporous atomizing sheet <NUM>.

The battery <NUM> is configured to provided electric energy for operation of the microporous atomizing sheet <NUM> and the drive member <NUM>. The controller <NUM> is configured to control working statuses of the microporous atomizing sheet <NUM> and the drive member <NUM>, that is, the controller <NUM> controls whether the battery <NUM> supplies power to the microporous atomizing sheet <NUM> and the drive member <NUM>. After the controller <NUM> controls the drive member <NUM> to start, the drive member <NUM> drives the push rod <NUM> to move toward the accommodating base <NUM>, so as to convey a predetermined amount of medicinal liquid in the liquid storage assembly <NUM> to the atomization chamber <NUM> through the needle tube <NUM>. After detecting that to-be-atomized medicinal liquid exists between the needle tube <NUM> and the microporous atomizing sheet <NUM> in the atomization chamber <NUM>, the controller <NUM> controls the microporous atomizing sheet <NUM> to perform an atomization operation. After detecting that the medicinal liquid between the needle tube <NUM> and the microporous atomizing sheet <NUM> in the atomization chamber <NUM> has been atomized, the controller <NUM> controls the microporous atomizing sheet <NUM> to stop working. Because each moving distance of the push rod <NUM> may be controlled, the predetermined amount of medicinal liquid may further be controlled to be conveyed to the atomization chamber <NUM> for atomization, to precisely control the amount of atomized liquid.

<FIG> is a schematic structural diagram of a drive member in a first embodiment of a control assembly according to the present disclosure.

The drive member <NUM> includes a motor <NUM> and a screw rod <NUM> rotatably connected to the motor <NUM>.

The motor <NUM> is fixed to the side wall of the control shell <NUM> by using a support element <NUM>, and the screw rod <NUM> is arranged on one end of the motor <NUM> close to the push rod <NUM>. That is, the motor <NUM> is spaced apart from the accommodating base <NUM>. The end of the motor <NUM> close to the push rod <NUM> is provided with a first contact element <NUM>, and the first contact element <NUM> is electrically connected to the controller <NUM>. The material of the first contact element <NUM> may be, but not limited to, metal, provided that the first contact element can perform conduction. In this embodiment, the first contact element <NUM> is cylindrical.

In another implementation, the first contact element <NUM> may be sheet-shaped or another structure, which is designed as required.

An elastic element <NUM> is sleeved on the screw rod <NUM>. In this embodiment, the elastic element <NUM> is a spring. In another implementation, the elastic element <NUM> may alternatively be another element that can be deformed and can be restored to an original state, provided that the element can meet the requirements.

In another implementation, the drive member <NUM> may include the motor <NUM> and a gear rotatably connected to the motor <NUM>, and a tooth matching the push rod is arranged on the corresponding push rod <NUM>, so that the drive member <NUM> drives the push rod <NUM> to move. Provided that the drive member <NUM> can drive the push rod <NUM> to move in an extending direction of the push rod. The specific structures of the drive member <NUM> and the push rod <NUM> may be designed according to requirements.

<FIG> is a schematic structural diagram of a push rod in a first embodiment of a control assembly according to the present disclosure. <FIG> is a schematic cross-sectional view of a push rod in a first embodiment of a control assembly according to the present disclosure. <FIG> is a schematic cross-sectional view of another implementation of a push rod in a first embodiment of a control assembly according to the present disclosure.

The end of the push rod <NUM> away from the accommodating base <NUM> is provided with a thread. The end of the push rod <NUM> away from the accommodating base <NUM> is sleeved on the screw rod <NUM>, that is, the end of the push rod <NUM> provided with the thread is rotatably connected to the screw rod <NUM>. The thread on the push rod <NUM> matches a thread on the screw rod <NUM>. When the screw rod <NUM> rotates, the thread on the push rod <NUM> moves up and down along the screw rod <NUM>. Under the drive of the screw rod <NUM>, the push rod <NUM> moves toward the accommodating base <NUM>, to push the piston <NUM> in the liquid storage assembly <NUM> to move to squeeze the medicinal liquid. A quantity of rotation circles of the screw rod <NUM> in a single time is controlled, so that strokes of the push rod <NUM> and the piston <NUM> are controlled, to finally achieve accurate liquid feeding.

To precisely control the amount of liquid pumped out from the liquid in the liquid storage assembly <NUM> by using the needle tube <NUM>, the precision of the thread on the screw rod <NUM> and the precision of the thread on the push rod <NUM> are set to be less than or equal to level <NUM>, to improve the precision of a single rotation and to precisely control the moving distance of the push rod <NUM>, thereby precisely controlling the atomized dose. It may be understood that the selection of the thread precision is also associated with a requirement of atomization precision, higher precision indicates higher atomization precision, and a smaller value set for the thread precision indicates higher precision.

In this embodiment, as shown in <FIG>, the push rod <NUM> includes a push rod body <NUM> and a nut <NUM>, and the nut <NUM> is arranged on the end of the push rod <NUM> away from the accommodating base <NUM> and is arranged on the inner wall of the push rod body <NUM>. In another implementation, as shown in <FIG>, the push rod <NUM> includes the push rod body <NUM> and a thread formed on the inner wall of the push rod body <NUM>, and the thread is arranged on the end of the push rod body <NUM> away from the accommodating base <NUM>.

One end of the push rod body <NUM> close to the drive member <NUM> is provided with a limiting groove <NUM>, and the limiting groove <NUM> is provided around the thread on the push rod body <NUM>. The limiting groove <NUM> is configured to accommodate the elastic element <NUM> sleeved on the screw rod <NUM>. When the push rod <NUM> is sleeved on the screw rod <NUM>, one end of the elastic element <NUM> abuts against the bottom wall of the limiting groove <NUM>, and the other end of the elastic element abuts against the motor <NUM>. With the rotation of the screw rod <NUM>, the elastic element <NUM> is compressed, the elastic element <NUM> applies a force that is opposite to a moving direction of the push rod to the push rod <NUM>, to eliminate a gap between the thread on the screw rod <NUM> and the thread on the push rod <NUM>, so that the thread on the screw rod <NUM> matches the thread on the push rod <NUM> more closely, to precisely control the moving distance of the push rod <NUM>. In another implementation, the elastic element <NUM> is fixedly connected to the motor <NUM>, to eliminate the gap between the thread on the screw rod <NUM> and the thread on the push rod <NUM>.

The end of the push rod <NUM> close to the drive member <NUM> is provided with a second contact element <NUM>, and the second contact element <NUM> is electrically connected to the controller <NUM>. A material of the second contact element <NUM> may be, but not limited to, metal, provided that the second contact element can perform conduction. In this embodiment, the second contact element <NUM> is cylindrical. A sum of the height after the first contact element <NUM> abuts against the second contact element <NUM> and the depth of the limiting groove <NUM> is the same as the height of the elastic element <NUM> after being compressed to the greatest extent. In another implementation, the second contact element <NUM> may be sheet-shaped or another structure, which may be designed as required.

When the screw rod <NUM> drives the push rod <NUM> to move away from the accommodating base <NUM>, that is, drives the push rod <NUM> to move toward the motor <NUM>, and after the first contact element <NUM> is in contact with the second contact element <NUM>, the controller <NUM> detects that the first contact element <NUM> is conducted to the second contact element <NUM> and controls the motor <NUM> to stop rotating, so that the push rod <NUM> stops moving toward the motor <NUM>, to restrict a downward movement position of the push rod <NUM>.

<FIG> is a schematic structural diagram of a second embodiment of a control assembly according to the present disclosure. <FIG> is a schematic cross-sectional view of a second embodiment of a control assembly according to the present disclosure. <FIG> is a schematic exploded view of a second embodiment of a control assembly according to the present disclosure.

In the second embodiment, the structure of the control assembly <NUM> is substantially the same as that in the first embodiment, except that the structure of the accommodating base <NUM>, the arrangement position of the elastic element <NUM>, and the connection relationship between the accommodating base <NUM> and the push rod <NUM> as well as the drive member <NUM>.

In this embodiment, the accommodating base <NUM>, the push rod <NUM>, and the drive member <NUM> are of an integral structure. One end of the accommodating base <NUM> is fixed to the mounting cavity <NUM> and is in communication with the mounting cavity <NUM>. The other end of the accommodating base <NUM> is fixed to the support element <NUM>. A part of the liquid storage assembly <NUM> is accommodated in the accommodating base <NUM>. The push rod <NUM> and the screw rod <NUM> of the drive member <NUM> are arranged in the accommodating base <NUM> as a whole. The motor <NUM> is arranged on a side of the support element <NUM> away from the accommodating base <NUM>, and the accommodating base <NUM> is fixedly connected to the motor <NUM> by the support element <NUM>. It may be understood that to improve the precision of the atomized dose, the rigidity of the entire structure, that is, the ability not to deform, needs to be improved, that is, it is expected that the position of the push rod <NUM> does not change due to another factor during rotation of the screw rod <NUM>. The accommodating base <NUM>, the push rod <NUM>, and the drive member <NUM> are set to an integral structure, which can prevent the support element <NUM> of the drive member <NUM> from being slightly deformed in the moving direction of the push rod <NUM> when the screw rod <NUM> drives the push rod <NUM> to move, causing the thrust of the motor <NUM> to be offset. The accommodating base <NUM> is fixedly connected to the support element <NUM>, and the accommodating base <NUM> is fixed to the control shell <NUM>, to prevent the support element <NUM> from being deformed, thereby improving the precision of the atomized dose.

A limiting element <NUM> is arranged in the accommodating base <NUM>, and the limiting element <NUM> is an annular structure and is arranged on the inner wall of the accommodating base <NUM>. The limiting element <NUM> may be fixedly connected to the accommodating base <NUM> through adhesive or the like. Preferably, the limiting element <NUM> and the accommodating base <NUM> are integrally formed. The limiting element <NUM> is arranged on one end of the liquid storage assembly <NUM> close to the drive member <NUM> and abuts against the liquid storage assembly <NUM>. That is, the limiting element <NUM> is arranged on the end of the push rod <NUM> close to the liquid storage assembly <NUM>.

The limiting element <NUM> is configured to prevent the push rod <NUM> from rotating with the rotation of the screw rod <NUM>, that is, to limit shaking of the push rod <NUM>. A gap between the push rod <NUM> and the limiting element <NUM> is controlled within <NUM>, to prevent the push rod <NUM> from shaking to the greatest extent, and to precisely control the moving distance of the push rod <NUM>, thereby precisely controlling the atomized dose.

The elastic element <NUM> is sleeved on the push rod <NUM>, that is, the push rod <NUM> is elastically connected to the accommodating base <NUM>.

In this embodiment, the elastic element <NUM> is a spring, one end of the spring abuts against the limiting element <NUM>, and the other end of the spring is fixed to a flange of the outer wall of one end of the push rod <NUM> close to the motor <NUM>. With the rotation of the screw rod <NUM>, the push rod <NUM> moves toward the piston <NUM>, the elastic element <NUM> is compressed, the elastic element <NUM> applies a force that is opposite to a moving direction of the push rod to the push rod <NUM>, to eliminate a gap between the thread on the screw rod <NUM> and the thread on the push rod <NUM>, so that the thread on the screw rod <NUM> matches the thread on the push rod <NUM> more closely, and the push rod <NUM> does not shake, to precisely control the moving distance of the push rod <NUM>. In another implementation, the elastic element <NUM> may alternatively be another element that can be deformed and can be restored to an original state, provided that the element meets the requirements.

The electronic atomization device in the present disclosure includes a microporous atomizing sheet and a needle tube, where one end of the needle tube is spaced apart from the microporous atomizing sheet, and the other end of the needle tube is configured to be inserted into a liquid storage assembly; and the needle tube is configured to convey liquid in the liquid storage assembly to the microporous atomizing sheet to form to-be-atomized liquid; and the microporous atomizing sheet is configured to atomize the to-be-atomized liquid, and the to-be-atomized liquid is attached between the microporous atomizing sheet and the needle tube through surface tension. Liquid in the liquid storage assembly is conveyed to the microporous atomizing sheet by using the needle tube, to precisely control the atomized dose, which can prevent a patient from inhaling excessive medicinal liquid or insufficient medicinal liquid, thereby achieving an expected therapeutic effect for an atomization inhalation therapy.

Claim 1:
An electronic atomization device, comprising:
a microporous atomizing sheet (<NUM>);
a needle tube (<NUM>), wherein one end of the needle tube (<NUM>) is spaced apart from the microporous atomizing sheet (<NUM>), and the other end of the needle tube (<NUM>) is configured to be inserted into a liquid storage assembly (<NUM>); the needle tube is configured to convey liquid in the liquid storage assembly to the microporous atomizing sheet to form to-be-atomized liquid; and the to-be-atomized liquid is attached between the microporous atomizing sheet and the needle tube through surface tension; and
an atomization base (<NUM>), wherein the microporous atomizing sheet (<NUM>) is arranged on one end of the atomization base and is engaged with an end portion of the atomization base (<NUM>) to form an atomization chamber (<NUM>); and the needle tube (<NUM>) is fixed to the atomization base (<NUM>), and the end of the needle tube (<NUM>) is arranged in the atomization chamber (<NUM>) and is spaced apart from the microporous atomizing sheet;
wherein the microporous atomizing sheet (<NUM>) comprises a microporous region, both the cross section of the atomization chamber (<NUM>) and the cross section of the microporous region are circular; and the atomization chamber (<NUM>), the microporous region of the microporous atomizing sheet (<NUM>), and the needle tube (<NUM>) are coaxially arranged;
characterized in that the diameter of the atomization chamber (<NUM>) is greater than the diameter of the microporous region and is less than twice the diameter of the microporous region.