Mesh nebulizer

Abstract

The application discloses a mesh nebulizer. The nebulization control method of the mesh nebulizer comprises the following steps: acquiring breathing data of a user; determining a breathing state of the user and an end time point of exhalation of each breathing cycle based on the breathing data; the breathing state comprises stable breathing and abnormal breathing; and controlling a running state of a nebulization sheet based on the breathing state and the end time point of exhalation. According to the breathing state of the user and the end time point of exhalation, the running state of the nebulization sheet is accurately controlled, so that the drug utilization rate is improved, and intelligent and personalized nebulization treatment is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of respiratory atomization control, and in particular to a mesh nebulizer. BACKGROUND

[0002] Nebulizers convert liquid medication into small droplets for patients to inhale to treat respiratory diseases. Nebulizers include ultrasonic nebulizers, compressed nebulizers, and mesh nebulizers. Among them, mesh nebulizers are widely used in the treatment of respiratory diseases due to their small size, portability, low noise, high atomization efficiency, and small residual amount.

[0003] In related technologies, mesh nebulizers still have deficiencies in intelligence, precise control, and safety, lack corresponding real-time monitoring and intelligent adjustment functions, and cannot automatically adjust atomization parameters. There are problems of low drug utilization rate and poor treatment effect. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an atomization control method capable of automatically adjusting the operating state of the atomization sheet and improving the drug utilization rate.

[0005] The present application also provides a mesh nebulizer capable of implementing the above-mentioned atomization control method.

[0006] In a first aspect, the present application provides an atomization control method, comprising:

[0007] obtaining respiratory data of a user;

[0008] determining the respiratory state of the user and the end-of-exhalation time point of each breathing cycle based on the respiratory data; the respiratory state includes stable breathing and abnormal breathing;

[0009] controlling the operating state of the atomization sheet based on the respiratory state and the end-of-exhalation time point.

[0010] The atomization control method according to the embodiments of the present application has at least the following beneficial effects: by obtaining the respiratory data of the user, the respiratory state of the user can be monitored in real time. Based on the respiratory data, it can be determined whether the user is in a stable breathing state or an abnormal breathing state, and the end-of-exhalation time point of each breathing cycle can be determined. According to the respiratory state of the user and the end-of-exhalation time point, the operating state of the atomization sheet is precisely controlled, thereby improving the drug utilization rate and realizing intelligent and personalized atomization treatment.

[0011] According to the first aspect, the controlling the operating state of the atomization sheet based on the respiratory state and the end-of-exhalation time point comprises:

[0012] predict a next breathing period according to the breathing data when the breathing state is stable breathing;

[0013] calculate an atomization time point based on an expiration end time point of the next breathing period and a preset time length, and control the atomization piece to switch to a first atomization state at the atomization time point.

[0014] According to the first aspect, in a possible implementation manner, after the atomization piece is controlled to switch to the first atomization state at the atomization time point, the method further includes:

[0015] control the atomization piece to stop at an inspiration end time point of the next breathing period.

[0016] According to the first aspect, in a possible implementation manner, the controlling the running state of the atomization piece based on the breathing state and the expiration end time point includes:

[0017] when the breathing state is abnormal breathing, control the atomization piece to switch to a second atomization state at an expiration start time point of each breathing period and switch to the first atomization state at an expiration end time point of each breathing period;

[0018] a working frequency of the atomization piece in the first atomization state is greater than a working frequency of the atomization piece in the second atomization state.

[0019] According to the first aspect, in a possible implementation manner, the determining the breathing state of the user based on the breathing data includes:

[0020] determining a breathing frequency CPn corresponding to a current breathing period based on the breathing data;

[0021] determining an average breathing frequency Cpa corresponding to at least two continuous breathing periods before the current breathing period based on the breathing data;

[0022] if |CPn-Cpa|≤CPp, it is determined that the breathing state of the user is stable breathing;

[0023] if |CPn-Cpa|>CPp, it is determined that the breathing state of the user is abnormal breathing;

[0024] wherein, CPp is a constant.

[0025] According to the first aspect, in a possible implementation manner, the method further includes:

[0026] obtaining a current temperature and a running state of the atomization piece; the running state includes a first atomization state, a second atomization state and a stop state;

[0027] If the current temperature is lower than the first preset temperature, and the running state is the stop state or the second atomization state, then before the atomization piece switches to the first atomization state next time, the atomization piece is controlled to sweep frequency for a first time length; wherein the first time length is positively correlated with the absolute difference between the current temperature and the first preset temperature.

[0028] And / or, if the current temperature is lower than the first preset temperature, and the running state is the first atomization state, then the atomization piece is controlled to stop, and the atomization piece is controlled to sweep frequency for a first time length to switch to the first atomization state again.

[0029] According to the first aspect, in a possible implementation manner, after the current temperature and the running state of the atomization piece are acquired, the method further includes:

[0030] If the current temperature is higher than the second preset temperature, and the running state is the stop state, then the cooling and cooling structure is started to cool the atomization piece and the liquid in contact with the atomization piece.

[0031] And / or, if the current temperature is higher than the second preset temperature, and the running state is the first atomization state or the second atomization state, then the atomization piece is controlled to run at a lower frequency, or the cooling and cooling structure is started to cool the atomization piece and the liquid in contact with the atomization piece.

[0032] According to the first aspect, in a possible implementation manner, the method further includes:

[0033] The temperature of the liquid in contact with the atomization piece is acquired in real time.

[0034] If the temperature of the liquid is greater than or equal to the third preset temperature, then the cooling and cooling structure is started to cool the atomization piece and the liquid in contact with the atomization piece.

[0035] The second aspect, the application embodiment also provides a mesh type atomizer, the mesh type atomizer includes:

[0036] A shell having a breathing channel;

[0037] An atomization piece including a base, a piezoelectric ceramic, and a flexible circuit board, the flexible circuit board including a first annular circuit board and a mounting portion connected as an integrated structure, the piezoelectric ceramic being arranged between the base and the first annular circuit board, and the mounting portion extending into the breathing channel;

[0038] A liquid supply mechanism for containing liquid and delivering the liquid to the atomization piece;

[0039] A breathing sensing detection probe arranged at a portion of the mounting portion located in the breathing channel, the breathing sensing detection probe being used to detect breathing data of a user;

[0040] The control unit is electrically connected with the first annular circuit board, and is configured to determine a breathing state of the user and an end time point of exhalation of each breathing cycle based on the breathing data of the user, and control output power of the piezoelectric ceramic based on the breathing state and the end time point of exhalation to adjust the operating state of the atomizing piece.

[0041] According to the mesh atomizer, the breathing sensing detection probe is arranged on the flexible circuit board, so that the breathing data of the user can be acquired to detect the breathing state of the user in real time. The control circuit is always present on the flexible circuit board, and the breathing sensing detection probe and the control unit can be directly electrically connected with the flexible circuit board, that is, connected to the control circuit on the flexible circuit board, so that the transmission of the control signal is facilitated, and the operating state of the atomizing piece is accurately controlled, thereby improving the utilization rate of the medicine.

[0042] According to a second aspect, in a possible implementation manner, the mesh atomizer comprises a first temperature sensor configured to detect a temperature of the base, the first temperature sensor being arranged on the first annular circuit board; and / or,

[0043] The flexible circuit board further comprises a second annular circuit board and a connecting portion, the connecting portion connecting the second annular circuit board and the first annular circuit board; the second annular circuit board is arranged in the axial direction of the base and spaced apart from the first annular circuit board, and an insulating layer is filled between the second annular circuit board and the first annular circuit board.

[0044] The mesh atomizer further comprises a second temperature sensor electrically connected with the second annular circuit board, the second temperature sensor being configured to detect a temperature of a liquid in contact with the atomizing piece.

[0045] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0046] The present application will be further described below in conjunction with the drawings and embodiments, in which:

[0047] Figure 1 FIG. 1 is a structural schematic diagram of an atomizing piece according to an embodiment of the present application;

[0048] Figure 2 FIG. 2 is a sectional structural schematic diagram of the atomizing piece according to the embodiment of the present application;

[0049] Figure 3 FIG. 3 is a structural schematic diagram of the atomizing piece according to another embodiment of the present application;

[0050] Figure 4Part cross-sectional structure schematic diagram of the atomizing piece of the embodiment of the present application;

[0051] Figure 5 Flowchart of the atomizing control method of the first embodiment of the present application;

[0052] Figure 6 Respiratory data and atomizing supply waveform chart of the embodiment of the present application;

[0053] Figure 7 Flowchart of the atomizing control method of the second embodiment of the present application;

[0054] Figure 8 Flowchart of the atomizing control method of the third embodiment of the present application;

[0055] Figure 9 Flowchart of the atomizing control method of the fourth embodiment of the present application;

[0056] Figure 10 Flowchart of the atomizing control method of the fifth embodiment of the present application;

[0057] Figure 11 Flowchart of the atomizing control method of the sixth embodiment of the present application.

[0058] Reference signs:

[0059] 100, atomizing piece;

[0060] 10, base; 11, inner ring part; 12, atomizing part; 121, atomizing hole; 13, positive electrode pin; 14, outer ring part; 15, support part;

[0061] 20, piezoelectric ceramic;

[0062] 30, flexible circuit board; 31, first annular circuit board; 311, board body; 312, conductive adhesive layer; 32, extension part; 33, second annular circuit board; 34, connecting part;

[0063] 41, first temperature sensor; 42, respiratory sensing detection probe; 43, second temperature sensor; 44, liquid deficiency detection probe;

[0064] 50, insulating layer; 51, limiting groove. DETAILED DESCRIPTION

[0065] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary, only for explaining the present application, and cannot be understood as limiting the present application.

[0066] In the description of the application, it should be understood that the orientation description, such as the orientation or positional relationship indicated by the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0067] In the description of the application, if the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0068] In the description of the application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the application in combination with the specific content of the technical solution.

[0069] In the description of the application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the application. In this specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The application provides a mesh nebulizer, which comprises a shell, an atomizing piece 100, a liquid supply mechanism and a breathing sensing detection probe 42. The shell has a breathing channel; the atomizing piece 100 comprises a base 10, a piezoelectric ceramic 20 and a flexible circuit board 30, the flexible circuit board 30 comprises a first annular circuit board 31 and a mounting portion 35 connected as an integral structure, the piezoelectric ceramic 20 is arranged between the base 10 and the first annular circuit board 31, and the mounting portion 35 extends into the breathing channel; the liquid supply mechanism is used for containing liquid and delivering the liquid to the atomizing piece; the breathing sensing detection probe 42 is arranged at the part of the mounting portion 35 located in the breathing channel, and is used for detecting breathing data of a user; a control unit is electrically connected with the first annular circuit board 31, and is used for determining a breathing state of the user and an exhalation end time point of each breathing cycle based on the breathing data of the user, and controlling the output power of the piezoelectric ceramic based on the breathing state and the exhalation end time point to adjust the operating state of the atomizing piece.

[0071] By arranging the breath sensing detection probe 42 on the flexible circuit board 30, the user's breath data can be obtained in real time to detect the user's breath state. The flexible circuit board 30 is etched with a control circuit, and the breath sensing detection probe 42 and the control unit can be directly electrically connected with the flexible circuit board 30, that is, connected to the control circuit on the flexible circuit board 30, thereby facilitating the transmission of control signals and accurately controlling the operating state of the atomization piece 100, thereby improving the utilization rate of the medicine.

[0072] The atomization piece 100 comprises a base 10, a piezoelectric ceramic 20 and a flexible circuit board 30.

[0073] The piezoelectric ceramic 20 is generally annular, and has a piezoelectric effect, which can deform and vibrate under the action of an external electric field. Specifically, the upper and lower end faces of the piezoelectric ceramic 20 are respectively connected to the negative and positive poles of an external power supply, and the negative and positive poles of the external power supply respectively apply a voltage to the upper and lower ends of the piezoelectric ceramic 20, thereby forming an electric field inside the piezoelectric ceramic 20 and causing the piezoelectric ceramic 20 to vibrate.

[0074] The base 10 comprises an inner ring part 11, an atomization part 12 and a positive pole pin 13. The inner ring part 11 is made of a metal material, and the lower end face of the piezoelectric ceramic 20 is in contact with the inner ring part 11. The inner ring part 11 not only serves as a support structure, but also can be electrically connected with the positive pole of the external power supply through the positive pole pin 13 to realize stable transmission of electric energy. The atomization part 12 is arranged in the hollow region of the inner ring part 11 and is also opposite to the hollow region of the piezoelectric ceramic 20. The vibration generated by the piezoelectric ceramic 20 is transmitted to the atomization part 12 through the inner ring part 11, and the atomization part 12 can be in contact with the liquid to disperse the liquid into small droplets.

[0075] The flexible circuit board 30 comprises a first annular circuit board 31 and an extension 32, and the extension 32 is electrically connected with the first annular circuit board 31. The first annular circuit board 31 is attached to the upper end face of the piezoelectric ceramic 20, and the part of the first annular circuit board 31 attached to the piezoelectric ceramic 20 forms a negative pole feed point. The extension 32 is used to connect the negative pole of the external power supply. The negative pole feed point is the part of the first annular circuit board 31 that directly contacts and conducts electricity with the piezoelectric ceramic 20. The negative pole feed point is electrically connected with the negative pole of the external power supply through the extension 32, thereby forming an electric field acting on the piezoelectric ceramic 20 between the negative pole feed point and the inner ring part 11.

[0076] In this embodiment, the positive pole pin 13 and the inner ring part 11 can be connected as an integrated structure, and the extension 32 and the first annular circuit board 31 can be connected as an integrated structure. It is not necessary to be connected to the external power supply through the welding point welding line, which can reduce the risk of poor contact and short circuit caused by loose or too small welding points. Moreover, the integrated structure can reduce energy loss during electric energy transmission, thereby improving the atomization efficiency.

[0077] The negative electrode feed point can be annular and match the shape of the upper end surface of the piezoelectric ceramic 20, so that a more uniform and close contact with the piezoelectric ceramic 20 can be formed. The annular negative electrode feed point cooperates with the inner ring portion 11 to form a complete circuit transmission path. The uniformity and stability of the transmission of electric energy to the piezoelectric ceramic 20 are improved, and the vibration effect of the piezoelectric ceramic 20 is optimized.

[0078] In some embodiments, the first annular circuit board 31 is not only used to form the negative electrode feed point, but also can be provided with some functional devices, such as the first temperature sensor 41, the breath sensing detection probe 42, etc., to realize specific electrical functions.

[0079] As shown in Figures 1 to 3 , the mesh nebulizer can include the first temperature sensor 41, which can detect the ambient temperature before the nebulization starts, and modify the sweep time during the nebulization start process according to the ambient temperature, so as to achieve the best nebulization frequency.

[0080] The first low-temperature sensor is directly installed on the first annular circuit board 31. Specifically, the outer edge size of the first annular circuit board 31 is larger than the outer edge size of the piezoelectric ceramic 20, i.e., part of the structure of the first annular circuit board 31 is located outside the piezoelectric ceramic 20, and this part can be attached to the inner ring portion 11 through an insulating heat-conducting film. The first temperature sensor 41 is arranged on the part of the first annular circuit board 31 located outside the piezoelectric ceramic 20, and the detection result of the first temperature sensor 41 is actually the temperature of the inner ring portion 11. Since the inner ring portion 11 is made of metal, it has good heat conduction performance, so that the detection result of the first temperature sensor 41 can reflect the temperature of the nebulization portion 12. When the nebulization work is performed, whether the nebulization portion 12 is invalid or structurally damaged can be determined according to the comparison result of the temperature of the nebulization portion 12 detected by the first temperature sensor 41 and the calibrated temperature.

[0081] When the mesh nebulizer is used for medical nebulization, the mesh nebulizer can include a breath detection sensing probe, which can detect the breathing pattern of a patient, so as to control the nebulization sheet 100 to optimize the effect of nebulization treatment according to the breathing pattern.

[0082] As shown in Figure 1 , Figure 2 , and Figure 4As shown, the inner edge size of the first annular circuit board 31 is smaller than the inner edge size of the piezoelectric ceramic 20, the outer edge size of the first annular circuit board 31 is larger than the outer edge size of the piezoelectric ceramic 20, and the inner edge and the outer edge of the first annular circuit board 31 are insulatedly connected with the inner ring part 11; for example, the connection can be achieved by insulating glue, insulating coating or insulating film, so as to achieve electrical isolation between the first annular circuit board 31 and the inner ring part 11, prevent current leakage and short circuit. A sealed cavity is formed between the first annular circuit board 31 and the inner ring part 11, and the piezoelectric ceramic 20 is arranged in the sealed cavity, so as to isolate the piezoelectric ceramic 20 from the external environment, especially from the liquid to be atomized, such as water and liquid medicine.

[0083] The first annular circuit board 31 includes a board body 311 and a conductive adhesive layer 312, the board body 311 has a circuit layer, and the circuit layer is electrically connected with an external power supply and the conductive adhesive layer 312. The conductive adhesive layer 312 is filled between the board body 311 and the piezoelectric ceramic 20, and the conductive adhesive layer 312 is electrically connected with the board body 311 to form a negative electrode feed point. The external power supply transmits current to the conductive adhesive layer 312 through the circuit layer of the board body 311. The conductive adhesive layer 312 has conductivity and adhesion, can pre-assemble the piezoelectric ceramic 20 and the board body 311 together, can also improve the contact stability of the conductive feed point and the upper end surface of the piezoelectric ceramic 20, and reduce the contact resistance.

[0084] The bottom surface of the board body 311 can be treated to expose copper to form conductive feed points, the conductive feed points can be in a dot shape, and the number of the conductive feed points can be one, two, three or even more; the shape of the conductive feed points can also be arc-shaped or ring-shaped; the present application does not limit this, as long as the conductive adhesive layer 312 can completely cover all the conductive feed points, and the shape of the conductive adhesive layer 312 matches the shape of the upper end surface of the piezoelectric ceramic 20.

[0085] In some embodiments, as shown in Figure 1 and Figure 3 The flexible circuit board 30 further includes a second annular circuit board 33 and a connecting part 34, the connecting part 34 connects the second annular circuit board 33 and the first annular circuit board 31; the second annular circuit board 33 is arranged along the axial direction of the inner ring part 11 and spaced apart from the first annular circuit board 31, that is, the first annular circuit board 31 and the second annular circuit board 33 are arranged along the height direction and spaced apart, and an insulating layer 50 is filled between the first annular circuit board 31 and the second annular circuit board 33 to ensure electrical isolation, only leaving the connecting part 34 as a conductive path, preventing the current from flowing accidentally between the first annular circuit board 31 and the second annular circuit board 33, and ensuring the stability and safety of the circuit. Other functional devices can be arranged on the second circuit board, such as a second temperature sensor 43 and a liquid shortage detection probe 44, to achieve specific electrical functions.

[0086] The mesh nebulizer can comprise a second temperature sensor 43 electrically connected with the second annular circuit board 33, which can detect the temperature of the liquid medicine to avoid inactivation of the liquid medicine due to high temperature during nebulization.

[0087] The mesh nebulizer can further comprise a liquid shortage detection probe 44 electrically connected with the second annular circuit board 33, which has a spring needle capable of detecting a signal transmitted by the nebulization diaphragm when the liquid medicine is sufficient, and the sinusoidal signal disappears when the liquid medicine is consumed, so that the liquid shortage state can be determined.

[0088] As shown in Figure 1 、 Figure 2 and Figure 4 , the first annular circuit board 31, the second annular circuit board 33, the connecting portion 34 and the extension portion 32 jointly constitute an integrated flexible circuit board 30. The first annular circuit board 31, the second annular circuit board 33, the connecting portion 34 and the extension portion 32 have continuous circuits therein, which can eliminate the interfaces and connection points of different components.

[0089] The sidewall of the insulating layer 50 can be provided with a limiting groove 51, and the connecting portion 34 is arranged in the limiting groove 51. The design of the limiting groove 51 can ensure that the connecting portion 34 will not be misaligned or deviated during manufacturing and assembling, thereby improving the stability and reliability of the entire flexible circuit board 30.

[0090] The insulating layer 50 can be a silica gel pad layer, a resin pad layer, etc., which is not limited in the present application.

[0091] In some embodiments, as shown in Figure 1 、 Figure 3 and Figure 4 , the base 10 further comprises an outer ring portion 14 and a plurality of support portions 15. The outer ring portion 14 is used to connect or fix with an external structure, so as to install the nebulization sheet 100 in a medical nebulization device. The outer ring portion 14 is arranged at the periphery of the inner ring portion 11, and the plurality of support portions 15 are arranged at intervals along the outer periphery of the inner ring portion 11, and each support portion 15 connects the inner ring portion 11 and the outer ring portion 14. The plurality of support portions 15 collectively effectively support the inner ring portion 11, form a plurality of connection points, and can maintain stable vibration of the inner ring portion 11. The plurality of connection points are uniformly distributed, thereby further improving the stability and vibration uniformity of the inner ring portion 11.

[0092] The inner ring 11 and multiple support parts 15 form an integral metal structure, which improves the connection strength between the inner ring 11 and the support parts 15 to withstand high-frequency vibration. The outer ring 14 is an injection-molded part, and each of the multiple support parts 15 has a portion of its structure embedded in the outer ring 14. The integral metal structure composed of the inner ring 11 and multiple support parts 15 can be fixed to the outer ring 14 by ultrasonic welding, or the integral metal structure composed of the inner ring 11 and multiple support parts 15 can be used as an insert to form the outer ring 14. The outer ring 14 is sequentially connected to multiple support parts 15, so that a portion of the support parts 15 is wrapped by the outer ring 14, improving the connection stability between the support parts 15 and the outer ring 14 and preventing the support parts 15 and the inner ring 11 from shifting or falling off. Furthermore, the injection-molded outer ring 14 acts as an insulator, effectively isolating external electrical interference.

[0093] The outer ring 14 can be made of materials such as PP (polypropylene) and ABS (acrylonitrile-butadiene-styrene copolymer).

[0094] like Figure 1 and Figure 3 As shown, one of the support portions 15 can be used as the positive pin 13, that is, one of the support portions 15 extends to protrude from the outer side wall of the outer ring portion 14, and the support portion 15 with this protruding structure is the positive pin 13. The portion of the support portion 15 protruding from the outer side wall of the outer ring portion 14 is used for electrical connection with the positive terminal of an external power supply, while the other portions of the support portion 15 can still serve to support the inner ring portion 11.

[0095] The support portion 15 is a slender metal sheet with certain elastic properties. When the piezoelectric ceramic 20 drives the inner ring portion 11 and the atomizing portion 12 to vibrate, the support portion 15 can deform due to its elasticity, thereby increasing the amplitude of the inner ring portion 11 and the atomizing portion 12.

[0096] In the first example of the above embodiment, part of the structure of the support portion 15 can be bent. The bent portion can be L-shaped, Z-shaped, wavy, spiral or other complex shapes. The bent support portion 15 can further improve the elastic performance and help to increase the amplitude of the inner ring portion 11.

[0097] In the second example of the above embodiment, part of the structure of the support portion 15 can also be radially inclined relative to the inner ring portion 11. By increasing the length of the support portion 15, the elastic performance of the support portion 15 can be further improved, thereby increasing the amplitude of the inner ring portion 11.

[0098] It should be noted that multiple continuous inclined structures can form a bent structure, that is, the first example and the second example can be combined with each other.

[0099] In a specific implementation, the support part 15 includes three sections, a first section is connected with the outer sidewall of the inner ring part 11, a third section is embedded into the inner ring part 11 from the inner sidewall of the outer ring part 14, the first section and the third section are spaced apart along the circumferential direction, and the first section and the third section both extend along the radial direction; a second section connects the first section and the third section, and the second section extends along the circumferential direction.

[0100] In some embodiments, as shown in Figure 1 and Figure 2 The atomization part 12 can adopt a polymer diaphragm with atomization holes 121, for example, a polyimide (PI) diaphragm, the edge of the polymer diaphragm is connected with the inner ring part 11 and covers the hollow area of the inner ring part 11, and the polymer diaphragm and the inner ring part 11 can be fixed by bonding, the atomization holes 121 are uniformly distributed on the diaphragm and are used for atomizing liquid into small particles. The size, shape and distribution of these holes can be adjusted according to specific application requirements.

[0101] The atomization part 12 can also be a metal diaphragm, such as a steel diaphragm, a palladium-nickel alloy diaphragm, a titanium-plated metal diaphragm, etc., the edge of the metal diaphragm is connected with the inner ring part 11 and covers the hollow area of the inner ring part 11, the edge of the metal diaphragm is tightly connected with the inner ring part 11, and is usually achieved by welding, bonding or other mechanical fixing methods. Or the metal diaphragm and the inner ring part 11 are an integrated metal diaphragm. The metal diaphragm is located in the hollow area of the inner ring part 11, the metal diaphragm has atomization holes 121 for atomizing liquid into small particles.

[0102] The application also provides an atomization control method, as shown in Figure 5 The atomization control method includes the following steps:

[0103] Step S10, obtaining breathing data of a user;

[0104] The breathing data of the user is detected by a breathing sensing detection probe arranged in the breathing channel, and the breathing data is essentially converted into a breathing flow rate value by the detection value of the breathing sensing detection probe.

[0105] When the mesh atomizer starts to operate, the environment zero point Pa needs to be calibrated and the environment fluctuation value P needs to be collected.

[0106] When the sampling breathing sensor value is converted into a breathing flow rate value in the device startup state, after low-pass filtering, Pn=Praw-1*(1-Lp)+Praw*(Lp), wherein Praw is equal to the flow rate naked data, Lp is a low-pass filtering constant: P1~Pn, n sensor data (n is a constant), and the average is taken as Pa as a reference value. When the Pn value is close to zero, the sensor is abnormal and needs to be prompted in time.

[0107] The environmental fluctuation value P is due to Pmax - Pmin, wherein Pmax is the maximum value in P1~Pn, and Pmin is the minimum value in P1~Pn.

[0108] When the device is powered on, P1~Pn, Pn-Pn-1<P, and Pn-Pn-2<P, and lasts for a period of time Tp, Tp is a constant, which should be greater than 2 times the minimum breathing frequency of the human body, recalibrate the Pa reference value, prevent the environment from changing, and prevent Pa from being wrong, causing detection abnormalities.

[0109] Step S20, determining the breathing state of the user and the end time point of exhalation of each breathing cycle based on the breathing data;

[0110] The user's breathing is divided into three stages, when Kn<0-P, it is the inhalation stage; when 0-P≤Kn≤P, it is the breathing stop stage; when Kn>P, it is the exhalation stage; the continuous inhalation stage, stop stage and exhalation stage are a breathing cycle. The end of the exhalation stage is the end time point of exhalation.

[0111] According to the frequency corresponding to the breathing cycle, the breathing state can be divided into stable breathing and abnormal breathing.

[0112] Step S30, controlling the running state of the atomization piece based on the breathing state and the end time point of exhalation.

[0113] The scheme of the present application solves the problem that the traditional atomization device cannot adjust according to the real-time breathing state of the user by acquiring the breathing data of the user in real time and accurately controlling based on the breathing data. The traditional atomization device adopts a fixed working mode and cannot dynamically adjust according to the actual situation of the user. The scheme of the present application realizes personalized atomization treatment through intelligent control, improves the utilization rate of the medicine, and improves the efficiency and effect of the treatment.

[0114] In actual application scenarios, as shown in the figure, Figure 6 The magenta line is the flow rate naked data Praw, the dark blue square wave is the atomization state, and the orange line is the breathing cycle. The breathing state of the user is dynamically changing, Figure 6The first four breathing cycles are stable breathing states, and the last breathing cycle is an abnormal breathing state. In this embodiment, the breathing data of the user is acquired to monitor the breathing state of the user in real time, and it is determined whether the user is in a stable breathing state or an abnormal breathing state. Then, the expiration end time point of each breathing cycle is determined to accurately control the operation state of the atomizing piece. For example, when the user is in a stable breathing state, the expiration end time point and the inspiration end time point of the next breathing cycle can be predicted according to the breathing data, so that the atomizing piece is controlled to switch to the first atomizing state and the stop state at the appropriate time points. When the user is in an abnormal breathing state, the atomizing piece is controlled to switch to the second atomizing state at the expiration start time point of each breathing cycle and to switch to the first atomizing state at the expiration end time point of each breathing cycle.

[0115] Specifically, the breathing state of the user can be determined by the breathing frequency. In an embodiment, as shown in FIG. 2, the step S20 of determining the breathing state of the user based on the breathing data specifically includes: Figure 7

[0116] The step S21 includes determining the breathing frequency CPn corresponding to the current breathing cycle based on the breathing data.

[0117] One breathing cycle includes three breathing phases: the inspiration phase, the stop phase, and the expiration phase. The inspiration phase is when Kn<0-P, and the time is IT; the stop phase is when 0-P<Kn<P, and the time is ST; and the expiration phase is when Kn>P, and the time is ET. The specific breathing frequency CPn can be calculated by the time ET or IT, and the unit is times / min.

[0118] The step S22 includes determining the average breathing frequency Cpa corresponding to at least two consecutive breathing cycles before the current breathing cycle based on the breathing data.

[0119] The average breathing frequency Cpa is calculated by the time length of ETn or ITn of more than two breaths.

[0120] The step S23 includes determining that the breathing state of the user is a stable breathing state if |CPn-Cpa|≤CPp.

[0121] The step S24 includes determining that the breathing state of the user is an abnormal breathing state if |CPn-Cpa|>CPp.

[0122] CPp is a constant.

[0123] ​By comparing the difference between the current respiratory frequency and the average respiratory frequency, it is determined whether the user's respiratory state is stable or abnormal. Specifically, when the difference is within a preset range CPp, it is determined to be stable breathing; otherwise, it is determined to be abnormal breathing. Through the above scheme, the respiratory state can be accurately judged based on the user's respiratory data. This judgment method uses the difference between the current respiratory frequency and the average respiratory frequency of the previous period to ensure the accuracy and timeliness of the judgment, thereby providing reliable basic data for atomization control.

[0124] The operating state of the atomizing piece includes a first atomizing state, a second atomizing state, and a stop state. When the atomizing piece is in the first atomizing state, the atomizing piece operates at a first frequency; when the atomizing piece is in the second atomizing state, the atomizing piece operates at a second frequency; wherein the first frequency is greater than the second frequency, that is, the working frequency of the atomizing piece in the first atomizing state is greater than the working frequency of the atomizing piece in the second atomizing state.

[0125] The atomizing piece operates at a high frequency in the first atomizing state to ensure sufficient atomization effect; operates at a lower frequency in the second state to reduce energy consumption or adapt to different treatment needs; and does not vibrate in the stop state to save energy and avoid excessive atomization. In this way, precise control of the atomizing piece in different states can be achieved, thereby improving the efficiency and effectiveness of atomization therapy.

[0126] The switching of different operating states of the atomizing piece can be achieved by adjusting the driving voltage or the frequency of the driving signal of the atomizing piece. Specifically, the first frequency can be determined according to the characteristics of the atomized liquid and the treatment needs to achieve the best atomization effect. The second frequency can be achieved by reducing the driving voltage or the frequency of the driving signal to reduce energy consumption. In the stop state, the atomizing piece stops receiving the driving signal and thus stops vibrating.

[0127] The present application realizes precise control of the atomization process by controlling the operating frequency of the atomizing piece in different states. Compared with the prior art, the present application not only can adjust the atomization intensity and frequency according to actual needs, but also can stop running when atomization is not needed, thereby reducing energy consumption and prolonging the service life of the device. As a result, the efficiency and effectiveness of atomization therapy have been significantly improved.

[0128] Based on this, as shown in Figure 8 The above step S30 can include:

[0129] Step S311, when the respiratory state is stable breathing, predicting the next breathing period according to the respiratory data;

[0130] When the breathing state of the user is stable breathing, in the case of stable breathing, the breathing cycle of the user tends to be stable, and the next breathing cycle can be predicted according to the previous breathing cycle. Specifically, the next breathing cycle includes a continuous inspiration phase, a pause phase and an expiration phase, that is, the expiration end time point and the inspiration end time point of the next breathing cycle can be obtained;

[0131] In step S312, the atomization time point is calculated based on the expiration end time point of the next breathing cycle and a preset time length, and the atomization piece is controlled to switch to the first atomization state at the atomization time point.

[0132] The preset time length can be adjusted based on factors such as atomization efficiency, user comfort, etc. The preset time length is an advance amount, that is, the atomization piece is controlled by the control unit to switch to the first atomization state before the expiration ends. By setting the atomization time point in advance compared to the expiration end time point, the atomization time point is turned on in advance, thereby ensuring that the user can inhale atomized drugs when inhaling, maximizing the absorption effect of the drugs.

[0133] The preset time length can be a fixed value, and only needs to ensure that the working frequency of the atomization piece is stable at the first frequency before entering the inspiration phase. In other embodiments, the preset time length can also be a variable value, which is set according to the average length of at least two consecutive breathing cycles before the current breathing cycle, for example, the preset time length is directly proportional to the average, which is not limited in the present application.

[0134] The length of the breathing cycle can reflect the depth of the user's breathing, and the atomization dose can be adjusted by increasing the atomization time, that is, the dose of atomization can be dynamically adjusted according to the user's lung volume or breathing demand, to prevent excessive or insufficient drugs, and to ensure that the patient receives an appropriate dose of treatment.

[0135] In step S313, the atomization piece is controlled to switch to the stop state at the inspiration end time point.

[0136] And at the inspiration end time point, the atomization piece can also be controlled by the control unit to switch to the stop state, so as to reduce unnecessary atomization and energy consumption, and reduce drug waste.

[0137] The above step S30 can further include:

[0138] When the breathing state is abnormal breathing, the atomization piece is controlled to switch to the second atomization state at the expiration start time point of each breathing cycle, and the atomization piece is controlled to switch to the first atomization state at the expiration end time point of each breathing cycle.

[0139] When the breathing state is abnormal breathing, the breathing frequency of the user is unstable, so that the atomization or the frequency reduction operation is started synchronously according to the current breathing stage. Specifically, when the user breathes into the exhalation stage, that is, the atomization piece is controlled to switch to the second atomization state at the exhalation start time point, the frequency reduction operation of the atomization piece can reduce the temperature rise of the atomization piece and reduce the waste of the drug; when the user ends the exhalation, that is, the atomization piece is controlled to switch to the atomization state at the exhalation end time point, the rapid mist is realized.

[0140] In this embodiment, the exhalation start time point and the exhalation end time point are used as control references instead of the inhalation stage, which avoids the case that the drug concentration is insufficient at the beginning of inhalation, and can increase the absorption effect of the drug.

[0141] The embodiment can realize accurate control of the running state of the atomization piece by predicting the exhalation end time point and the inhalation end time point of the next breathing cycle based on the breathing data. In the stable breathing state, the atomization time point is calculated by the preset time length, the atomization piece is controlled to switch to the first atomization state at the atomization time point, and the atomization piece is controlled to switch to the stop state at the inhalation end time point, thereby reducing unnecessary waste of the drug. In the abnormal breathing state, the state of the atomization piece is controlled by the exhalation start time point and the exhalation end time point of each breathing cycle, so as to ensure that the atomization piece switches between the second atomization state and the atomization state, ensure that the atomization process is synchronized with the breathing rhythm, and ensure the continuity and effectiveness of the atomization process.

[0142] In addition, as shown in Figure 9 The atomization control method further includes the following steps:

[0143] Step S40, acquiring the current temperature and running state of the atomization piece;

[0144] The temperature of the atomization piece is detected by the first temperature sensor.

[0145] Step S50, if the current temperature is lower than the first preset temperature, and the running state is the stop state or the second atomization state, then the atomization piece is controlled to sweep frequency for a first time length before the next switching of the atomization piece to the working state.

[0146] In the case of fixed sweep frequency time, if the ambient temperature is low, the vibration of the atomization piece is affected by the low temperature during the atomization start sweep frequency process, and the frequency swept out in the low temperature environment is not the best frequency.

[0147] The first time length is positively related to the absolute difference between the current temperature and the first preset temperature. That is, by prolonging the sweep frequency time, the atomization piece can sweep frequency to reach the set first frequency.

[0148] For example, when the temperature is below 15℃, the frequency of the atomization piece is affected to different degrees, and the influence gradually weakens as the temperature rises, and there is no obvious influence when the temperature is above 15℃.

[0149] Step S60, if the current temperature is lower than the first preset temperature and the running state is the first atomization state, the atomization piece is controlled to switch to a stop state, and the atomization piece is controlled to sweep frequency for a first time length to switch to the first atomization state again.

[0150] That is, if the temperature of the atomization piece continues to be lower than the first preset temperature during the atomization process, the sweep frequency operation needs to be performed again. It is equivalent to restarting the atomization piece to ensure that the atomization piece runs at the first frequency, avoiding insufficient inhalation of the drug by the user.

[0151] In this embodiment, the temperature and the running state of the atomization piece are monitored in real time, and the running mode of the atomization piece is dynamically adjusted to ensure that the atomization piece can stably run under different temperature conditions. Through the positive correlation between the time length of the sweep frequency operation and the temperature difference, the normal work of the atomization piece can be effectively avoided due to the temperature being too low, thereby improving the effect and safety of the atomization treatment.

[0152] Further, as shown in FIG. 4, after step S40, the method further includes: Figure 10

[0153] Step S70, if the current temperature is higher than the second preset temperature and the running state is the stop state, the cooling and temperature reduction structure is started to cool and reduce the temperature of the atomization piece and the liquid in contact with the atomization piece.

[0154] Step S80, if the current temperature is higher than the second preset temperature and the running state is the first atomization state or the second atomization state, the atomization piece is controlled to run at a reduced frequency, or the cooling and temperature reduction structure is started to cool and reduce the temperature of the atomization piece and the liquid in contact with the atomization piece.

[0155] The atomization piece is easy to fail or structurally damaged when running at a temperature higher than the second preset temperature, and the circuit is abnormal. Therefore, when the temperature is detected to be higher than the second preset temperature, different cooling measures are taken according to different running states, such as running at a reduced frequency or starting the cooling and temperature reduction structure to cool and reduce the temperature of the atomization piece and the liquid in contact with the atomization piece. Thus, the running safety and temperature control problem of the atomization piece under high temperature conditions are solved, and the atomization piece can still safely run and effectively control the temperature under high temperature environment, avoiding performance degradation or damage due to overheating.

[0156] If the atomization piece continues to be in a state higher than the second preset temperature, it is determined that the atomization process is abnormal, and the atomization can be stopped in time to reduce the risk of medical accidents. ​

[0157] In addition, as shown in Figure 11 The atomization control method further comprises:

[0158] Step S91, acquiring the temperature of the liquid in contact with the atomization diaphragm in real time;

[0159] The temperature of the liquid in contact with the atomization diaphragm is detected by a second temperature sensor.

[0160] Step S92, if the temperature of the liquid is greater than or equal to a third preset temperature, starting the cooling structure to cool the atomization diaphragm and the liquid in contact with the atomization diaphragm.

[0161] By monitoring the temperature of the liquid and starting the cooling structure when the temperature is too high, the problem of excessively high temperature of the liquid can be effectively solved, and the inactivation of the drug due to high temperature during atomization can be avoided, especially for the atomization equipment of sensitive drugs, to ensure that the activity of the drug is maintained. For example, antibiotic drugs, hormone drugs, protein and peptide drugs, antiviral drugs, etc.

[0162] The cooling structure can include a fan, a heat sink or other cooling devices to reduce the temperature of the atomization diaphragm and the liquid. In this way, the temperature of the liquid during atomization can be maintained at an appropriate temperature to prevent the drug from being inactivated due to high temperature.

[0163] It should be noted that the atomization control method in the present application can also include the liquid shortage detection and reminder scheme commonly used in the art, for example, detection by a spring needle of a liquid shortage detection probe; when the liquid is sufficient, the spring needle can detect the signal transmitted by the atomization diaphragm, and when the liquid is consumed, the sinusoidal signal disappears, indicating that the liquid is in a shortage state. The present application does not make detailed description here.

[0164] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge range of those skilled in the art without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A mesh nebulizer characterized by, The mesh atomizer comprises: a housing having a breathing passage; an atomizing piece comprising a base, a piezoelectric ceramic and a flexible circuit board, the flexible circuit board comprising a first annular circuit board and a mounting portion connected as an integral structure, the piezoelectric ceramic being arranged between the base and the first annular circuit board, the mounting portion extending into the breathing passage; a liquid supply mechanism for containing liquid and delivering the liquid to the atomizing piece; a breathing sensing detection probe arranged at a portion of the mounting portion located in the breathing passage, the breathing sensing detection probe being used to detect breathing data of a user; a control unit electrically connected with the first annular circuit board, used to determine a breathing state of the user and an end-of-exhalation time point of each breathing cycle based on the breathing data of the user, and control an output power of the piezoelectric ceramic based on the breathing state and the end-of-exhalation time point to adjust an operating state of the atomizing piece; the determination of the breathing state of the user based on the breathing data comprises: determining a breathing frequency CPn corresponding to a current breathing cycle based on the breathing data; determining an average breathing frequency Cpa corresponding to at least two consecutive breathing cycles before the current breathing cycle based on the breathing data; if |CPn-Cpa|≤CPp, determining that the breathing state of the user is stable breathing; if |CPn-Cpa|>CPp, determining that the breathing state of the user is abnormal breathing; wherein CPp is a constant; the control of the operating state of the atomizing piece based on the breathing state and the end-of-exhalation time point comprises: when the breathing state is stable breathing, predicting a next breathing cycle according to the breathing data; calculating an atomizing time point based on the end-of-exhalation time point of the next breathing cycle and a preset time length, and controlling the atomizing piece to switch to a first atomizing state at the atomizing time point; when the breathing state is abnormal breathing, controlling the atomizing piece to switch to a second atomizing state at an end-of-inhalation time point of each breathing cycle and to switch to the first atomizing state at an end-of-exhalation time point of each breathing cycle; a working frequency of the atomizing piece in the first atomizing state is greater than a working frequency of the atomizing piece in the second atomizing state.

2. The mesh nebulizer of claim 1, wherein, after the atomizing piece is controlled to switch to the first atomizing state at the atomizing time point, the method further comprises: controlling the atomizing piece to switch to a stop state at an end-of-inhalation time point of the next breathing cycle.

3. The mesh nebulizer of claim 1 or 2, wherein, the mesh atomizer comprises a first temperature sensor for detecting a temperature of the base, the first temperature sensor being arranged on the first annular circuit board; and / or the flexible circuit board further comprises a second annular circuit board and a connecting portion, the connecting portion connecting the second annular circuit board and the first annular circuit board; the second annular circuit board is arranged spaced apart from the first annular circuit board along an axial direction of the base, and an insulating layer is filled between the second annular circuit board and the first annular circuit board; the mesh atomizer further comprises a second temperature sensor electrically connected with the second annular circuit board, the second temperature sensor being used to detect a temperature of liquid in contact with the atomizing piece.

4. The mesh nebulizer of claim 1 or 2, wherein, The mesh atomizer comprises a first temperature sensor configured to detect a current temperature of the atomizer; The control unit is further configured to: obtain a current temperature and a running state of the atomizing piece; the running state comprises a first atomizing state, a second atomizing state and a stop state; if the current temperature is lower than a first preset temperature, and the running state is the stop state or the second atomizing state; then control the atomizing piece to sweep frequency for a first time length before the atomizing piece switches to the first atomizing state next time; wherein the first time length is positively correlated with an absolute difference between the current temperature and the first preset temperature; and / or, if the current temperature is lower than the first preset temperature, and the running state is the first atomizing state; then control the atomizing piece to switch to the stop state, and control the atomizing piece to sweep frequency for the first time length to switch to the first atomizing state again.

5. The mesh nebulizer of claim 4, wherein, After obtaining the current temperature and the running state of the atomizing piece, the method further comprises: if the current temperature is higher than a second preset temperature, and the running state is the stop state; then start a cooling structure to cool the atomizing piece and liquid in contact with the atomizing piece; and / or, if the current temperature is higher than the second preset temperature, and the running state is the first atomizing state or the second atomizing state; then control the atomizing piece to reduce frequency, or start the cooling structure to cool the atomizing piece and the liquid in contact with the atomizing piece.

6. The mesh nebulizer of claim 1 or 2, wherein, The mesh atomizer comprises a second temperature sensor configured to detect a temperature of liquid in contact with the atomizing piece; The control unit is further configured to: obtain the temperature of the liquid in contact with the atomizing piece in real time; if the temperature of the liquid is greater than or equal to a third preset temperature, then start the cooling structure to cool the atomizing piece and the liquid in contact with the atomizing piece.

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