A child interactive nebulization inhalation system based on multi-dimensional feedback

Abstract

This invention relates to a multidimensional feedback-based interactive nebulizer inhalation system for children, comprising: a flow regulation component having a dosing state and an blocking state; a detection module for acquiring vital sign monitoring data; a feedback execution module including an interactive prompting unit and a drive unit; and a control module communicatively connected to the detection module and the feedback execution module. The control module is configured to execute the following processing flow: receiving vital sign monitoring data to assess airway safety risks and nebulization operation compliance respectively; when there is an abnormal airway safety risk, generating a collaborative intervention command: the command drive unit switches the flow regulation component to the blocking state and simultaneously controls the interactive prompting unit to output soothing interactive information; when there is no abnormal airway safety risk, controlling the interactive prompting unit to output interactive information for action correction or positive guidance based on the compliance assessment results.

Description

Technical Field

[0001] This invention relates to the field of medical assistive devices technology, and in particular to an interactive nebulizer inhalation system for children based on multidimensional feedback. Background Technology

[0002] Nebulized inhalation therapy is currently the core and preferred method of drug delivery for treating respiratory diseases in children. The clinical effectiveness of this therapy highly depends on the effective deposition of aerosol particles in the lower respiratory tract of the child. However, in actual home or outpatient nebulization scenarios, children, due to their unique physiological and psychological development stage, generally experience high levels of medical anxiety and poor treatment compliance. This directly leads to non-compliant operations during nebulization, such as not tightly wrapping the mouthpiece with the lips or holding the device at an angle, causing a large amount of drug-containing aerosols to dissipate into the air, severely reducing the effective deposition rate of targeted drug delivery.

[0003] A more serious clinical reality is that children's airways are highly reactive. When subjected to continuous physical stimulation from nebulized airflow and drug particles, children are highly susceptible to sudden, severe coughing or airway spasms. In this emergency pathological state, if the nebulizer cannot instantly stop the continuous pumping of high-pressure airflow, it will cause serious secondary physical damage to the child's fragile airways.

[0004] Regarding the aforementioned compliance monitoring and airflow control issues, some tentative solutions have emerged in existing technologies. However, these technologies are fragmented and have significant technical blind spots and safety hazards. Firstly, regarding airflow control and basic monitoring, CN110049795A discloses a device equipped with an adjustable airflow wheel and a sound monitoring module, capable of issuing alarms when abnormalities are detected and allowing manual or motor-based airflow adjustment. However, such devices lack physical sensing of the "airway sealing of the child's lips" as the drug delivery source, making it impossible to accurately determine whether the medication is being effectively inhaled. Furthermore, if only a conventional motor is used to momentarily physically block the airway, the continuous output of high-pressure gas from the compressor at the nebulizer's front end can cause a sudden surge in internal pressure, easily leading to silicone tubing detachment, medication splashing, or even damage to the main unit, posing a significant engineering safety hazard.

[0005] Secondly, regarding compliance testing, CN109152891A proposes setting a flexible thin-film pressure sensor array at the mouthpiece of a respiratory drug delivery system to detect lip fit. However, this solution is limited to the detection of a single local force, completely isolated from the overall attitude monitoring of the device and the underlying airway mechanical adjustment mechanism, and cannot form an adaptive intervention closed loop.

[0006] Finally, regarding child psychological intervention, some intelligent health care devices for children, such as CN113679912A, have introduced inertial sensors (IMU) and combined them with interactive feedback using cartoon expressions like "smile" or "sad" displayed on the screen. However, the multimedia interaction of such devices is completely detached from the core mechanical and hydrodynamic control of the nebulizer, representing purely software-level information representation. When a child suddenly experiences severe airway spasm, this purely software-based UI feedback cannot provide any physical, rigid airflow protection. Moreover, existing devices typically emit high-frequency alarm sounds or flash red lights on the screen when an abnormality is detected. These sudden changes in sound and light often induce a startle reflex in the child, exacerbating sympathetic nerve excitation and leading to more severe airway spasms.

[0007] In summary, there is an urgent need in this field for a novel nebulization system for children that can accurately integrate multidimensional vital sign data and, in the event of an emergency airway event, bypass the delay in human response and achieve simultaneous and coordinated rigid physical airway blockage with a safety decompression mechanism and sensory soothing.

[0008] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this invention, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that the present invention does not possess the features of these prior art. On the contrary, the present invention already possesses all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Summary of the Invention

[0009] To address the shortcomings of existing technologies, this invention provides a multi-dimensional feedback-based interactive nebulization inhalation system for children, comprising: a flow regulation component connected to an airway supplying nebulized airflow, having a drug delivery state for guiding the nebulized airflow to the child and a blocking state for stopping the delivery of nebulized airflow to the child; a detection module configured to acquire vital sign monitoring data characterizing the child's nebulization compliance and airway safety status; a feedback execution module including an interactive prompting unit and a drive unit driven by the flow regulation component; and a control module communicatively connected to the detection module and the feedback execution module. The control module is configured to execute the following processing flow: receiving vital sign monitoring data to assess airway safety risks and nebulization operation compliance respectively; when an airway safety risk is present, generating a collaborative intervention command: the command drive unit switches the flow regulation component to the blocking state and simultaneously controls the interactive prompting unit to output reassuring interactive information; when no airway safety risk is present, controlling the interactive prompting unit to output interactive information for action correction or positive guidance based on the compliance assessment results.

[0010] The nebulized inhalation system of this invention acquires vital sign monitoring data through a detection module and assesses airway safety risks and nebulization operation compliance through a control module, achieving a linkage between fluid dynamics intervention and interactive guidance. When airway safety risks are present, the control module generates a coordinated intervention command, driving the flow regulation component to switch to an interrupted state, and simultaneously controlling the interactive prompt unit to output soothing interactive information. This promptly cuts off the nebulized airflow, reduces continuous physical stimulation of the airflow on the airway, and alleviates the startle reflex caused by environmental changes, helping to stabilize the child's emotions. When no risks are present, the interactive prompt unit outputs action correction or positive guidance information to guide the child to maintain a proper nebulization posture, improving the standardization of the nebulization process and the effective deposition rate of the medication. This system forms a closed loop in both physical airway control and psychological guidance, enhancing the safety and compliance of nebulization therapy.

[0011] According to a preferred embodiment, the system includes a pressure relief pipe communicating with the outside atmosphere; the flow regulating component includes a hollow rotating wheel, the peripheral wall of which is provided with a vent for providing drug administration and a non-porous wall section and a pressure relief hole for providing an obstruction state; in the drug administration state, the vent connects the airway to the child's end; in the obstruction state, the non-porous wall section physically cuts off the airway toward the child's end, and the pressure relief hole connects the airway to the pressure relief pipe to release the air pressure in the airway outward.

[0012] This invention utilizes a hollow rotating wheel with a pressure relief hole and a pressure relief pipe connected to the outside atmosphere. In a blocked state, the airflow towards the child is cut off by a non-porous wall section, while simultaneously connecting the pressure relief hole and the pressure relief pipe. This structure provides a channel for the high-pressure atomized airflow within the airflow path to release outwards, avoiding internal pressure buildup caused by momentary blockage of the airflow path, ensuring stable pipeline operation, and preventing residual high-pressure gas from escaping from the outlet and causing choking in the child.

[0013] According to a preferred embodiment, when the control module generates a collaborative intervention command, it sends a control signal to the drive unit to drive the rotor to rotate; the vent and the pressure relief hole have a preset relative position difference on the rotor, so that when the non-porous wall section blocks the air passage, the pressure relief hole connects to the pressure relief pipe.

[0014] This invention utilizes a drive unit to rotate a rotating wheel, with a pre-set relative positional difference between the vent hole and the pressure relief hole on the wheel. When the non-perforated wall section blocks and obstructs the main air passage, the pressure relief hole simultaneously connects to the pressure relief pipe. This mechanically based alignment design ensures that the blocking action and the pressure relief action are synchronized in time, reducing the risk of instantaneous air pressure fluctuations caused by electronic control delays or slow action of a single valve, and improving the reliability of the airflow switching process.

[0015] According to a preferred embodiment, the vital signs monitoring data includes respiratory acoustic data collected by an acoustic sensing unit; when assessing airway safety risks, the control module is configured to extract a specified frequency band from the respiratory acoustic data to obtain a filtered acoustic signal; the filtered acoustic signal is compared with a preset feature matching model, and if the comparison result indicates that the filtered acoustic signal matches the feature matching model, it is determined that there is an abnormal airway safety risk.

[0016] This invention collects respiratory acoustic data through an acoustic sensing unit and extracts and filters specific frequency bands, reducing interference from background noise such as environmental and equipment operating airflow. By comparing the filtered acoustic signals with a preset feature matching model, abnormal acoustic signals that meet specific characteristics can be identified more objectively, thus providing data support for airway safety risk assessment and improving the accuracy of abnormal state judgment.

[0017] According to a preferred embodiment, the vital signs monitoring data also includes equipment tilt attitude data collected by the attitude sensing unit; when the control module determines that there is an abnormal risk to airway safety, it is configured to make a judgment between the filtered acoustic signal and the equipment tilt attitude data: when the filtered acoustic signal conforms to the feature matching model, and the tilt angle change indicated by the equipment tilt attitude data is detected to exceed a preset threshold, a collaborative intervention command is generated.

[0018] This invention introduces device tilt attitude data collected by an attitude sensing unit, which is combined with acoustic signals for comprehensive judgment. While detecting abnormal acoustic signals, it verifies whether the change in the device tilt angle exceeds a preset threshold, thus assisting in identifying abnormal movements caused by physical discomfort in children. This multimodal verification mechanism reduces misjudgments caused by accidental interference from a single sensor, improving the rationality and accuracy of triggering collaborative intervention commands.

[0019] According to a preferred embodiment, the interactive prompting unit includes a visual prompting unit and an audio output unit; when generating a collaborative intervention instruction, the control module controls the output of soothing interactive information including: instructing the visual prompting unit to lower the displayed brightness parameter and / or instructing the audio output unit to stop playing the voice prompt, wherein the actions of lowering the brightness parameter and stopping the voice prompt are configured to be triggered synchronously with the mechanical action of the flow regulation component switching to the blocking state, so as to reduce the intensity of the sound and light stimulation of the device on the child while physically cutting off the airflow.

[0020] This invention achieves a simultaneous activation of a low-stimulation sensory environment by configuring the reduction of sound and light output intensity and the mechanical blocking action of the flow regulation component to trigger synchronously. This synergistic mechanism of physical intervention and sensory soothing effectively reduces startle reflexes in children caused by mechanical movements of the equipment or sudden environmental changes, helps stabilize emotions, and prevents more severe secondary airway spasms induced by sympathetic nerve excitation, thus improving safety in emergency situations.

[0021] According to a preferred embodiment, the detection module further includes a bypass sound guide tube; the acoustic sensing unit is disposed outside the air chamber through which the atomizing airflow flows, and is connected to the interior of the air chamber through the bypass sound guide tube to obtain respiratory acoustic data.

[0022] The acoustic sensing unit acquires respiratory acoustic data through this bypass sound guide tube. This structure achieves physical isolation between the acoustic sensor and the high-speed airflow in the main air chamber while acquiring the target sound signal. This reduces the direct impact of high-frequency airflow turbulence noise on sound pickup at the front end, further improving the signal-to-noise ratio of the acoustic signal.

[0023] According to a preferred embodiment, when there is no risk of airway safety abnormalities, the control module is configured to perform the following determination based on the result of the nebulization operation compliance assessment: if the compliance monitoring data used to assess the standardization of operation does not reach the preset compliance benchmark, the system is determined to be in a corrective guidance state, and the interactive prompt unit is controlled to output guidance information indicating the direction of deviation of the device tilt posture or lip contact pressure relative to the compliance benchmark, so as to assist the child in adjusting the drug administration posture; if the compliance monitoring data reaches the compliance benchmark, the system is determined to be in a normal working state, and the interactive prompt unit is controlled to output positive guidance prompt information to remind the child to maintain the current drug administration posture.

[0024] In compliance assessments, this invention provides children with digital corrective guidance based on sensor data feedback by outputting guidance information indicating deviations in physical parameters. Compared to generalized prompts, this directional guidance based on deviation direction constructs a precise feedback loop for the child's medication administration behavior, helping to more efficiently guide the child to actively adjust their posture to meet nebulization requirements, thereby improving the standardization of the nebulization process and the effective deposition rate of the medication.

[0025] According to a preferred embodiment, the vital signs monitoring data includes lip contact pressure data collected by a pressure sensing unit, which is used for compliance assessment of atomization operation; the system also includes an atomizing mouthpiece, on which the pressure sensing unit is disposed, and the pressure sensing unit is covered with a flexible coating layer for blocking water vapor.

[0026] This invention collects lip contact pressure data through a pressure sensing unit on the atomizing mouthpiece, providing a physical basis for compliance assessment and facilitating the identification of whether the mouth posture is correct. Simultaneously, the flexible coating layer outside the pressure sensing unit effectively prevents the intrusion of atomized medication and exhaled moisture while transmitting lip compression deformation, reducing the risk of short circuits due to moisture in the internal electronic components and ensuring stable sensor operation.

[0027] According to a preferred embodiment, the control module is equipped with a timing function to record the cumulative duration of the system in normal working state; when it is determined that the system has been in normal working state for a preset time threshold, the control module determines that the system has entered the excitation state and controls the interactive prompt unit to output advanced excitation interactive information, wherein the excitation interactive information is configured to present feedback content that changes in level as the cumulative duration increases, so as to guide the child to extend the time of compliant drug administration.

[0028] This invention establishes a tiered reinforcement incentive mechanism based on treatment progress by monitoring the continuous period of compliant drug administration and positively correlating the output hierarchy of incentive interaction information with the cumulative amount of effective nebulization treatment cycles. This mechanism provides progressively increasing sensory feedback over time, giving children a sense of purpose and motivation during the otherwise monotonous treatment process, effectively improving their compliance with prolonged nebulization therapy and ensuring continuous and effective drug deposition. Attached Figure Description

[0029] Figure 1 This is a block diagram illustrating the module connection principle of a preferred embodiment of the interactive nebulization inhalation system for children provided by the present invention. Figure 2 This is a schematic diagram of the logical steps of the control module execution process according to a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the overall external structure of a nebulized inhalation system according to a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of a preferred embodiment of the present invention in which the main body and the bottom hand-held component are separated. Figure 5 This is a perspective structural diagram of the internal mechanical components, air passages, and sensor arrangement of the main body of a preferred embodiment of the present invention. Figure 6 This is a partially enlarged perspective view of the internal mechanical components of the main body according to a preferred embodiment of the present invention; Figure 7 This is an exploded disassembly diagram of the core pipelines and electromechanical actuators of a preferred embodiment of the present invention; Figure 8This is a perspective view of the partial spatial arrangement of the hollow rotor, the air outlet pipe, and the pressure relief pipe according to a preferred embodiment of the present invention. Figure 9 This is a schematic diagram showing the relative positions of the pressure relief hole and the opening of a hollow rotary wheel according to a preferred embodiment of the present invention. Figure 10 This is a schematic diagram of the usage state of the main body of the present invention when connected to an external air source pipeline according to a preferred embodiment; Figure 11 This is an exploded view of the unfolded main body shell and the assembly relationship of the internal core components in a preferred embodiment of the present invention.

[0030] List of reference numerals 100: Main body; 101: Exhaust port; 110: Air outlet pipe; 110.1: Pressure relief pipe; 111: Atomizing mouthpiece; 130: Flow regulation component; 131: Rotary wheel; 131.1: First vent; 131.2: Second vent; 131.3: Third vent; 131.4: Pressure relief hole; 131.5: Opening; 136: Sealing ring; 140: Bypass sound guide pipe; 150: Status indicator ring; 400: Detection module; 410: Pressure sensing unit; 420: Attitude sensing unit; 430: Acoustic sensing unit; 500: Control module; 600: Feedback execution module; 610: Visual prompt unit; 620: Audio output unit; 630: Illuminated indicator unit; 640: Drive unit; 650: Interactive prompt unit. Detailed Implementation

[0031] The following is a detailed explanation with reference to the accompanying drawings.

[0032] This invention provides a multi-dimensional feedback-based interactive nebulizer inhalation system for children. For example... Figure 1 , Figure 3 and Figure 5 As shown, the system's overall hardware architecture includes a main body 100, a flow regulation component 130, a detection module 400, a feedback execution module 600, and a control module 500.

[0033] like Figure 3 and Figure 5 As shown, the main body 100 serves as the basic support structure and fluid pipeline carrier of the system, and its interior is equipped with an air passage for the flow of nebulized air. The air inlet end of the air passage is used to connect to a device that provides an air source or nebulized drug solution (such as an external medical nebulizer or a built-in nebulizer pump) to receive pressurized nebulized air; the air outlet end of the air passage extends towards the child patient (i.e., the child end) to directionally deliver the nebulized air into the child's respiratory tract.

[0034] like Figure 5 , Figure 7 and Figure 8 As shown, the flow regulating component 130 is disposed in the air passage of the main body 100, serving as a mechanical flow interception and reversal hub connected in series with the fluid channel. It has at least two switchable physical states: a drug delivery state for normally guiding the nebulized airflow to the child, and a blocking state for stopping the output of the nebulized airflow to the child.

[0035] like Figure 1 and Figure 5 As shown, the detection module 400 is disposed on the main body 100 and related peripheral accessories. It is coupled to the physical environment inside the child's body or system and is configured to acquire vital sign monitoring data to characterize the child's nebulization compliance and respiratory safety status.

[0036] like Figure 1 and Figure 6 As shown, the feedback execution module 600 is the physical intervention and information output port of the system. It includes an interactive prompting unit 650 that outputs audio and visual signals to the outside world, and a drive unit 640 that is mechanically connected to the flow regulation component 130.

[0037] like Figure 1 and Figure 2 As shown, the control module 500, serving as the central nervous system of this system, has its printed circuit board integrated into the internal cavity of the main body 100, and maintains communicative connections with both the detection module 400 and the feedback execution module 600. The power supply module and power lines of this system are integrated into the internal support of the main body 100. Specifically, the main body 100 houses a rechargeable lithium battery pack and a connected power distribution circuit, which supplies power to the control module 500, the detection module 400, and the flow regulation component 130 via internal wiring. This power supply layout ensures... Figure 10 Even with the bottom handheld component detached and connected to an external air source, the electronic system within the main body 100 maintains normal monitoring and control functions, ensuring the device's power supply remains operational under different physical configurations. During system operation, the control module 500 receives and processes vital sign monitoring data, assesses airway safety risks and nebulization operation compliance, and then, based on the assessment results, issues targeted collaborative intervention commands or corresponding interactive commands to the feedback execution module 600, thereby achieving closed-loop control in both physical airway reconstruction and patient psychological guidance.

[0038] like Figure 4As shown, the main body 100 has an outer casing, which not only covers and protects the internal electromechanical components but also defines the boundaries of some fluid channels. An exhaust port 101 is formed on the outer casing of the main body 100. This exhaust port 101 is connected to the internal air passage of the main body 100. Specifically, one end of the exhaust port 101 is connected to the internal air passage (i.e., the air outlet pipe 110) of the main body 100, and the other end is connected to the atomizing mouthpiece 111. Furthermore, in conjunction with... Figure 4 and Figure 5 A pressure relief pipe 110.1 is fixedly installed inside the main body 100, and the position of the pressure relief pipe 110.1 does not change with the rotation of the internal components. The main body 100 is also equipped with an air outlet pipe 110, which constitutes the terminal extension of the air passage. One end of the air outlet pipe 110 is connected to the air passage inside the main body 100, and the other end protrudes outward for detachable connection to the nebulizer mouthpiece 111. The nebulizer mouthpiece 111 is the part that the child directly bites on during nebulization treatment. It has an internal cavity that is coaxially connected to the air outlet pipe 110 to directly introduce the nebulized airflow output from the air outlet pipe 110 into the child's oral cavity.

[0039] like Figure 5 , Figure 7 , Figure 8 and Figure 11As shown, the mechanical structure of the flow regulating component 130 and its state switching mechanism in the gas path are the foundation for realizing the adaptive fluid reconfiguration of this system. The flow regulating component 130 includes a hollow rotor 131. The rotor 131 is cylindrical or frustum-shaped and is rotatably supported in a fluid confluence chamber inside the main body 100. The rotor 131 has a hollow inner cavity, the air inlet side of which is always in fluid communication with the upstream of the gas path supplying the atomized airflow, so that the atomized airflow can continuously fill the hollow inner cavity of the rotor 131. The peripheral wall of the rotor 131 is provided with vent holes for providing drug delivery and non-porous wall sections and pressure relief holes 131.4 for providing a blocking state, spaced along its circumference. The vents can be configured as multiple groups of vents with different diameters, such as a first vent 131.1, a second vent 131.2, and a third vent 131.3, to provide different drug delivery flow rates by changing the flow cross-sectional area. Specifically, the first vent 131.1, the second vent 131.2, and the third vent 131.3 appear in a centrally symmetrical pair on the rotor 131, i.e., there are two first vents 131.1, two second vents 131.2, and two third vents 131.3. In the drug delivery state, the rotor 131 is at a specific rotation angle, such that one of the vents on its peripheral wall is spatially coaxially aligned with the drug delivery branch facing the child (i.e., the inlet end of the vent pipe 110). At this time, another pair of vents with the same diameter is connected to the pipeline of the atomizing gas source at the bottom at a position 180 degrees symmetrical with the center of the rotor 131. In this state, the atomized airflow filling the hollow cavity of the rotor 131 exits through the vent, smoothly connecting the airway to the child's end. In the blocked state, the rotor 131 rotates to another specific angle, causing the non-porous wall section (i.e., the solid material area) on the peripheral wall of the rotor 131 to rotate in front of the inlet end of the outlet pipe 110. Due to the solid structure of the non-porous wall section, the airway towards the child's end is physically cut off. Simultaneously, in this blocked state, the pressure relief hole 131.4 is outside the area covered by the outlet pipe 110, and precisely covers and connects with the outlet of the pressure relief pipe 110.1 fixed within the main body 100. The other end of the pressure relief pipe 110.1 protrudes from the main body 100 and connects to the atmosphere. To ensure that the pressure relief hole 131.4 fulfills its pressure relief function, such as... Figure 9As shown, the peripheral wall of the rotor 131 must also have an opening 131.5 at a position 180 degrees symmetrical to the pressure relief hole 131.4, allowing the atomized gas to enter the inner cavity of the rotor 131. This provides two safety benefits: firstly, the inner cavity of the rotor 131 provides a buffer space for the incoming atomized gas; secondly, since the pressure relief hole 131.4 is not connected to the exhaust port 101, the high-pressure atomized gas can be directly discharged to the atmosphere from the pressure relief hole 131.4 and the pressure relief pipe 110.1 without entering the exhaust pipe 110. This not only avoids pressure buildup but also absolutely prevents the risk of high-pressure gas spraying out of the atomizing mouthpiece 111 and causing the child to choke.

[0040] Based on the above description, the interactive nebulizer inhalation system of the present invention includes: a flow regulating component 130, which is used to dynamically reconstruct the hydrodynamic state of the air path supplying the nebulizer airflow; a rotor 131, which is used to perform mechanical switching between the drug delivery path and the pressure relief path at the proximal inlet of the outlet pipe 110; and a pressure relief pipe 110.1, which is used to discharge the residual high pressure in the circuit to the external environment of the housing of the main body 100. In the drug delivery mode, the rotor 131 is positioned with the vent hole and the inner cavity of the air outlet pipe 110 aligned axially under the drive of the output shaft of the drive unit 640, so that the high-pressure atomized airflow on the air source side can be fluidly connected to the child's end; in the case of abnormal airway safety, the rotor 131 is driven by the drive unit 640 to rotate step by step until its non-porous wall section covers the inlet of the air outlet pipe 110, so that the atomized air source can be connected to the pressure relief pipe 110.1 for pressure relief; in the manual adjustment mode, the rotor 131 forms a friction self-locking position with the sealing ring 136 through the end knob interface exposed on the side wall of the main body 100 and with scale indication.

[0041] To avoid motion interference between the drive unit 640 and the manual knob, the output shaft of the drive unit 640 is connected to the wheel 131 via a release clutch mechanism. In manual adjustment mode, the release clutch mechanism mechanically disengages the drive unit 640 from the wheel 131, thereby allowing the user to manually rotate the wheel 131 without interference from motor damping.

[0042] like Figures 5-7 as well as Figure 11As shown, an annular sealing ring 136 with a notch is also provided on the outside of the rotor 131. The rotor 131 can rotate circumferentially within the sealing ring 136 and its radial displacement is limited by the sealing ring 136. During rotation, the vent on the rotor 131 can be connected to the air passage through the notch on the sealing ring 136. At the same time, the rotor 131 can tightly seal the unused vent with the help of the solid wall of the sealing ring 136, thereby effectively preventing liquid or air leakage. Preferably, an O-ring with a preset deformation or a dynamic sealing gasket made of self-lubricating material is provided between the axial contact end faces of the rotor 131 and the sealing ring 136. This dynamic sealing structure is configured such that when the rotor 131 switches between different working positions under the drive unit 640, the sealing end face always remains physically pressed to prevent high-pressure atomized airflow from leaking into the internal cavity of the main body 100, ensuring the fluid sealing of the air passage and the dry environment of electronic components during the switching process.

[0043] like Figure 6 and Figure 7As shown, to achieve automated switching of the rotor 131 between the aforementioned states, the drive unit 640 in the feedback execution module 600 is connected to the flow regulation component 130 via a transmission connection. When the control module 500 generates a coordinated intervention command including an airway switching action, it sends an electrical control signal to the drive unit 640 to drive the rotor 131 to rotate. Preferably, the drive unit 640 is a micro stepper motor, the stator of which is fixed on the internal support of the main body 100, and its rotor output shaft is coaxially connected to the central rotation axis of the rotor 131 or forms a meshing transmission through a gear set. The control module 500 can precisely control the rotation angle and angular velocity of the rotor 131 by sending a pulse width modulation (PWM) signal with a specific frequency and pulse number to the micro stepper motor. To ensure that the system can eliminate the potential pressure stagnation hazard caused by physical blockage in the event of an airway emergency, there is a preset relative position difference between the vent and the pressure relief port 131.4 on the rotor 131. Specifically, this relative position difference is manifested as a specific geometric phase angle on the cylindrical circumference of the rotor 131. When the rotor 131 rotates under the drive of the micro stepper motor, the edge of the non-porous wall section gradually blocks and eventually completely blocks the inlet of the drug delivery branch towards the child. Based on the preset relative position difference, the edge of the pressure relief hole 131.4 synchronously begins to gradually appear and eventually completely connects to the fixed pressure relief pipe 110.1. This synchronous alignment design based on a rigid mechanical structure ensures that the blocking action of the gas path and the pressure relief action occur strictly synchronously on a time scale, avoiding the instantaneous surge in system internal pressure caused by software delay or slow action of a single valve. The rotor 131, the sealing ring 136, and the drive unit 640 together with the main body 100 constitute a fluid-sealed execution structure, which enables the structure to simultaneously conduct the pressure relief circuit while blocking the main gas path. This overcomes the engineering safety risks of pipe detachment and drug splashing caused by airflow pressure buildup due to a single physical cut-off in existing technologies such as CN110049795A, and achieves the synergistic effect of physical blockage and system pressure self-balancing.

[0044] Alternatively, to support the higher-level functional concept of the flow regulating component 130, the flow regulating component 130 can also adopt a non-rotational linear slide valve structure. In this linear slide valve embodiment, the flow-blocking component is an elongated sliding valve plate, and the driving unit 640 is a linear motor or an electromagnetic push rod. The sliding valve plate has a drug delivery through-hole and a bypass pressure relief groove sequentially opened along its sliding direction, and a solid wall section is left between adjacent holes and grooves of the sliding valve plate. In the drug delivery state, the linear motor drives the sliding valve plate to translate, aligning the drug delivery through-hole with the outlet pipe 110 for connection; in the blocking state, the linear motor drives the sliding valve plate to continue translating, causing the solid wall section to translate to the inlet of the outlet pipe 110 to form a physical cut-off, while the bypass pressure relief groove on the sliding valve plate translates to a position communicating with the pressure relief pipe 110.1, thus achieving mechanical linkage between blocking and pressure relief.

[0045] like Figure 1 As shown, as another optional embodiment of the flow regulation component 130, it can be configured as a flow distribution network composed of multiple sets of proportional solenoid valves. In this embodiment, a first solenoid valve is connected in series on the drug delivery branch leading to the child, and a second solenoid valve is connected in series on the pressure relief branch leading to the outside atmosphere. The coordinated intervention command of the control module 500 is manifested by synchronously changing the drive level of the two solenoid valves: in the blocking state, the control module 500 outputs a control signal to cause the first solenoid valve to perform a shut-off action, and outputs a control signal within the same clock cycle to cause the second solenoid valve to perform an open conduction action. This embodiment eliminates complex mechanical transmission components, has a faster response speed, and is especially suitable for professional medical scenarios that require large-scale centralized gas supply.

[0046] like Figure 1 and Figure 3 As shown, the detection module 400 includes multiple sensing units that are physically distributed and functionally complementary. Vital sign monitoring data includes lip contact pressure data collected by the pressure sensing unit 410, which is directly used for airway tightness verification in the nebulization operation compliance assessment. The system includes a nebulizer mouthpiece 111 disposed at the outer end of the air outlet tube 110. The pressure sensing unit 410 is disposed on the nebulizer mouthpiece 111 and is used to sense the magnitude and distribution of physical pressure applied by the child's upper and lower lips when they wrap around the mouthpiece in real time.

[0047] The nebulizer mouthpiece 111 is in a pluggable sleeve position at the drug delivery end, allowing the built-in pressure sensing unit 410 to communicate with the control module 500 of the main unit. When the mouthpiece 111 is deeply cleaned or replaced, it is in a physically detached position, allowing the electrical contacts at the end of the pressure sensing unit 410 to disconnect from the adapter groove inside the main body 100. Specifically, the pressure sensing unit 410 senses the circumferential pressure of the child's lips against the outer periphery of the mouthpiece; the flexible covering layer provides a fluid barrier while transmitting mechanical deformation. When the mouthpiece is plugged into the main unit, the pressure sensing unit 410 transmits data to the control module 500 electrically via the Pogo Pin contact.

[0048] The pressure sensing unit 410 has a flexible thin-film array and a rigid inner skeleton. The thin-film array and the rigid inner skeleton can generate a linear resistance change under the pressure of the lips, so that the atomizing mouthpiece 111 is fixed to the oral contact area of ​​the child. The pressure sensing unit 410 and the flexible covering layer form a fully enclosed waterproof sensing structure, which enables the structure to maintain sensing sensitivity and corrosion resistance in the high temperature and high humidity drug mist environment, and has biocompatible operating characteristics.

[0049] like Figure 5As shown, considering that during nebulization therapy, the mouthpiece area will inevitably come into contact with high concentrations of nebulized drug particles and the humid air exhaled by the child, if a conventional exposed or simple patch-type sensor is used, it is very easy for moisture intrusion to cause internal short circuits or resistance drift. Therefore, the pressure sensing unit 410 is covered with a flexible coating layer to block moisture. Preferably, the nebulization mouthpiece 111 is manufactured using a two-color injection molding process that includes a rigid inner skeleton and a soft outer coating layer. The pressure sensing unit 410 (such as a flexible thin-film array pressure sensor) is pre-attached or embedded to the outer surface of the rigid skeleton layer made of PC or ABS material during the manufacturing process. Subsequently, through a secondary injection molding process using liquid silicone (LSR), the flexible coating layer is completely and seamlessly wrapped around the rigid skeleton layer and the pressure sensing unit 410. In practical use, the child's lips directly contact and compress the outer flexible covering layer. Due to its excellent elastic deformation capability, this flexible covering layer can transmit the external compression deformation without damage to the surface of the internal pressure sensing unit 410, causing a corresponding change in its resistance or capacitance characteristics, which in turn outputs a corresponding analog or digital electrical signal to the control module 500. This structure not only completely isolates the intrusion path of moisture and corrosive liquids at the physical level, but also ensures the mechanical accuracy of pressure transmission.

[0050] Alternatively, the pressure sensing unit 410 can also be protected using a thermoplastic polyurethane (TPU) vacuum coating process. In this embodiment, after the pressure sensing unit 410 is attached to the main surface of the atomizing nozzle 111, a layer of highly dense and extremely thin TPU waterproof and breathable membrane is tightly bonded to the outside of the sensor under vacuum negative pressure, and forms a sealing edge with the nozzle body through hot melt adhesive or high-frequency welding. This solution meets the requirements for moisture barrier while reducing the complexity of mold development and injection molding processes, and helps control consumable costs.

[0051] Alternatively, the tube wall of the atomizing mouthpiece 111 features a thin-walled deformation zone design in the area corresponding to the contact between the child's upper and lower lips (e.g., the wall thickness is reduced to a preset micrometer-level size). This allows the area, although made of rigid plastic, to still possess a small degree of elastic flexibility. A pressure sensing unit 410 (such as a strain gauge) is tightly attached to the inner wall of this thin-walled deformation zone (i.e., located inside a layer or shell that is not in direct contact with the respiratory airflow) using medical adhesive. When the child sucks on the mouthpiece, the slight deformation of the outer wall directly causes the inner sensor to deform and output a signal. This implementation avoids the risk of material aging or detachment that may arise from using additional flexible materials.

[0052] like Figure 7 and Figure 11As shown, the vital signs monitoring data also includes respiratory acoustic data collected by the acoustic sensing unit 430, which is used by the control module 500 to assess airway safety risks. The acoustic sensing unit 430 (such as a miniature electret microphone or MEMS microphone with wideband response) is used to capture the child's breathing sounds, wheezing sounds, and sudden coughing sounds during nebulization. However, inside the main body 100 of the handheld nebulizer, due to the high-speed flow of air in the confined tubing, especially the throttling effect when the airflow passes through the air vent of the impeller 131, a broadband airflow noise containing a large number of high-frequency components is inevitably generated inside the air chamber. If the acoustic sensing unit 430 is directly exposed inside the air chamber, the weak acoustic signals of the human respiratory tract will be masked by this strong airflow noise. Therefore, the detection module 400 also includes a bypass sound guide tube 140; the acoustic sensing unit 430 is disposed outside the air chamber through which the atomized airflow flows (e.g., sealed and installed in an independent electronic component chamber physically isolated from the air chamber), and communicates with the interior of the air chamber through the bypass sound guide tube 140 to acquire respiratory acoustic data. Preferably, the bypass sound guide tube 140 is used to guide the broadband vibration signal inside the air chamber through a physical path to a low-noise pickup area; the acoustic sensing unit 430 is used to convert mechanical waves into electrical signals characterizing respiratory features. Specifically, under normal operating conditions, the bypass sound guide tube 140 dissipates energy from high-frequency airflow turbulence noise; in the event of a sudden cough in a child, the bypass sound guide tube 140, under the action of an acoustic filtering channel, transmits pathological sound waves after low-pass filtering to the acoustic sensing unit 430; under complex environmental interference, the control module 500 performs risk assessment by extracting an FFT-based voiceprint vector and comparing it with a preset feature matching model.

[0053] Alternatively, as a third embodiment of the bypass sound guide 140, the bypass sound guide 140 and its connected chamber are geometrically configured as a miniature Helmholtz resonator. By calculating the length and cross-sectional area of ​​the sound guide and the volume of the sensor front-end chamber, the inherent resonant frequency band of the resonator is precisely positioned within a preset acoustic characteristic band of pediatric respiratory tract abnormalities. When a weak pathological sound wave matching the characteristics of this frequency band appears in the air chamber, the air column in the resonant cavity resonates, physically amplifying the sound pressure signal of the target frequency band and applying it to the acoustic sensing unit 430, thereby achieving targeted enhancement of the target signal of a specific frequency band at the physical structure level.

[0054] like Figure 5 and Figure 11As shown, in addition to the pressure sensing unit 410 and the acoustic sensing unit 430, the detection module 400 also includes an attitude sensing unit 420. The attitude sensing unit 420 is preferably a six-axis inertial measurement unit (IMU, including a three-axis accelerometer and a three-axis gyroscope) integrated on the control module 500 circuit board. The attitude sensing unit 420 is configured to acquire real-time device tilt attitude data. This data participates in the compliance assessment of atomization operations (e.g., determining whether the device is within a safe tilt angle range suitable for the gravity output of the liquid medication), and serves as the core data input source for the multimodal verification mechanism when determining whether there are any abnormal risks to airway safety in the system.

[0055] like Figure 1 and Figure 2 As shown, the control module 500 executes the aforementioned complex vital sign monitoring data processing flow through its internally configured microprocessor unit (MCU) or digital signal processor (DSP). The control module 500 establishes a communication connection with the detection module 400 to continuously receive vital sign monitoring data in order to assess airway safety risks and nebulization operation compliance in parallel.

[0056] like Figure 2 As shown, when assessing airway safety risks, the control module 500 is configured to extract a specified frequency band from the received airway acoustic data to obtain a filtered acoustic signal. Since the acoustic data after physical noise reduction via the bypass sound tube 140 may still contain some ambient background noise, the analog-to-digital converter inside the control module 500 converts the analog audio signal into a discrete digital signal and then calls a preset digital bandpass filtering algorithm. The passband frequency of this algorithm is set to a specific frequency band, the upper and lower limits of which are determined based on clinically statistically analyzed pediatric fundamental frequencies and typical airway hyperresponsiveness pathological acoustic bands. This further filters out low-frequency mechanical vibration noise and high-frequency airflow whistling sounds exceeding this specific frequency band at the digital level. After acquiring the filtered acoustic signal, the control module 500 compares it with a preset feature matching model.

[0057] Preferably, the feature matching model can be a voiceprint feature vector matrix comparison model based on Fast Fourier Transform (FFT). The control module 500 performs a short-time Fourier transform on the filtered acoustic signal, extracts its energy spectrum distribution characteristics within a specific frequency band, and generates a real-time feature vector. The control module 500 calculates the similarity distance between this real-time feature vector and the pathological voiceprint feature vector matrix (such as sample data representing severe coughing or high-frequency wheezing) pre-stored in the data storage. If the comparison result indicates that the similarity distance is less than a preset distance threshold, it means that the filtered acoustic signal conforms to the feature matching model, thereby determining that there is a suspected airway safety abnormality risk.

[0058] Alternatively, the feature matching model can also employ threshold comparison logic based on temporal envelope energy integration. The control module 500 performs envelope detection on the filtered acoustic signal and calculates the total energy integration value of the signal amplitude within a preset sliding time window. When this total energy integration value exceeds a preset abnormal energy threshold, the comparison result is determined to match dangerous acoustic characteristics, thus indicating an abnormal airway safety risk. This implementation method has low algorithm complexity and extremely fast response speed, meeting the requirements for millisecond-level real-time monitoring.

[0059] Alternatively, a pre-trained lightweight neural network classification model (such as a small convolutional neural network CNN) can be deployed inside the control module 500. This model uses the filtered acoustic signal as an input tensor and directly outputs a probability distribution indicating whether the current acoustic state belongs to "normal breathing," "noise in speech," or "abnormal spasmodic coughing." When the probability output value for "abnormal spasmodic coughing" is greater than a preset probability threshold, it is determined to conform to the feature matching model. This approach leverages the generalization ability of machine learning to more accurately eliminate occasional acoustic interference caused by external environmental factors.

[0060] like Figure 2 As shown, to prevent false positives caused by occasional anomalies in data from a single sensor, the control module 500, when determining a risk of airway safety abnormalities, is configured to compare the filtered acoustic signal with the device tilt attitude data collected by the attitude sensing unit 420 to execute a multimodal verification mechanism. When children experience genuine severe airway spasms or violent coughing, they often exhibit uncontrolled trunk convulsions, violent head tilting backward, or struggling movements due to pain. Therefore, only when the filtered acoustic signal matches the feature matching model, and the control module 500 simultaneously detects that the tilt angle indicated by the device tilt attitude data exceeds a preset threshold, does the control module 500 finally confirm the validity of the judgment result and generate a collaborative intervention command.

[0061] Preferably, the judgment logic for the tilt angle change exceeding the preset threshold is as follows: the control module 500 analyzes the continuously received triaxial acceleration and gyroscope data, and calculates the reciprocating oscillation frequency or instantaneous angular acceleration of the device's spatial attitude change within a preset very short time window (e.g., several hundred milliseconds). If the absolute value of the reciprocating oscillation frequency or instantaneous angular acceleration exceeds the physical extreme value threshold set based on the stable handheld state, that is, it indicates that the device is undergoing violent involuntary vibration or flipping along with the child's torso, at which point the multimodal verification passes, and a collaborative intervention command is issued.

[0062] Alternatively, the control module 500 can also calculate the absolute angular deviation between the current attitude angle of the device and the reference attitude angle at the initial stage of entering the nebulization state. If, at the moment of abnormal vocalization, this absolute angular deviation shows a monotonous and rapid increase over several consecutive sampling cycles and exceeds the preset safe deviation angle limit (indicating that the child may violently tilt backward or forcefully throw the device away due to airway discomfort), it is also considered that the tilt angle change exceeds the preset threshold, thereby confirming the triggering of intervention.

[0063] Alternatively, the control module 500 can perform high-pass filtering on the tilt posture data to filter out slow posture adjustment movements and specifically extract high-frequency posture disturbance energy that characterizes muscle spasms and twitches. If the integral value of this high-frequency disturbance energy is greater than a preset energy limit, combined with acoustic anomalies, it is determined that the conditions for generating a coordinated intervention command are met.

[0064] like Figure 1 , Figure 2 and Figure 6 As shown, a status indicator ring 150 is configured around the periphery of the main body 100. When the control module 500 confirms the generation of the coordinated intervention command, the system enters the highest priority abnormal alarm state. As previously described, the control module 500 drives the drive unit 640 to instantly switch the flow regulation component 130 to the safety blocking state and simultaneously release the internal pressure through electromechanical control commands, so as to cut off the physical source that may continue to stimulate the airway. At the same time as this physical blocking is executed, in order to prevent the child's startle reflex from being triggered by the physical action of the equipment or sudden changes in the external environment, thereby inducing sympathetic nerve excitation and causing more severe secondary spasms in the airway, the control module 500 simultaneously controls the interactive prompt unit 650 to output soothing interactive information. The interactive prompt unit 650 includes a visual prompt unit 610 (such as a color LCD or OLED display screen) and an audio output unit 620 (such as a miniature speaker) located outside the main body 100, and the control module 500 can simultaneously command the status indicator ring 150 to flash warnings at high frequency.

[0065] Preferably, when outputting soothing interactive information, the control module 500 instructs the visual prompt unit 610 to lower the brightness parameters of the display (for example, the control module 500 lowers the duty cycle of the PWM signal driving the display backlight module to a preset safe low brightness threshold level, or makes the screen display a dark soothing background), and / or instructs the audio output unit 620 to immediately stop playing the original voice prompts or music, thereby quickly establishing a low-stimulation and gentle sensory environment at the visual and auditory levels.

[0066] When the control module 500 determines that there is an abnormal risk to airway safety, it is in the intervention command distribution position, so that the feedback execution module 600 and the flow regulation component 130 can work together. When the coordinated intervention command is generated, the control module 500 adjusts the backlight PWM control signal to switch the visual prompt unit 610 to a low brightness display mode. Under the condition of continuous compliance operation for a specified period of time, the control module 500 controls the interactive prompt unit 650 to output progressively layered feedback signals when triggered by the timing function module. When the control module 500 detects that the abnormal risk to airway safety has been eliminated, the system executes the reset logic: the control module 500 commands the drive unit 640 to drive the wheel 131 to rotate back to the drug delivery state, and simultaneously restores the brightness of the visual prompt unit 610 and the playback state of the audio output unit 620.

[0067] Alternatively, the control module 500 instructs the visual cue unit 610 to turn off all dynamic flickering images and complex cartoon animations on the screen, retaining only a slowly changing, soft monochrome background; simultaneously, it instructs the audio output unit 620 to output low-frequency white noise or a rhythmic sound simulating a heartbeat within a preset specific frequency band. Clinical studies have shown that such low-frequency and rhythmically stable sound signals can effectively stimulate the parasympathetic nervous system, helping children quickly regain emotional stability after a sudden airway discomfort.

[0068] Alternatively, the control module 500 can directly cut off the main display power of the visual prompting unit 610 to put it into a screen-off state, and only instruct the light-emitting indicator unit 630 (such as a weak LED indicator) configured on the device housing to flash in a low-frequency breathing light mode, so as to provide a minimum device status indication and avoid any redundant light source stimulating the child's visual nerves.

[0069] like Figure 2 As shown, during normal system operation, when the airway safety risk assessment indicates that there are no abnormal risks as described above, the control module 500 switches its main computing power to execute the nebulization operation compliance assessment process. The control module 500 compares in real time the lip contact pressure data collected by the pressure sensing unit 410 and the device tilt attitude data collected by the attitude sensing unit 420 (both collectively referred to as compliance monitoring data) with preset compliance benchmarks. The preset compliance benchmarks include a preset minimum pressure threshold indicating that the lips have tightly enveloped the mouthpiece, and a preset maximum tilt angle threshold indicating that the medication can fall smoothly under gravity.

[0070] If the control module 500 determines that the compliance monitoring data does not meet the preset compliance benchmark (for example, pressure data below the minimum pressure threshold indicates that the child is leaking air or is only biting lightly with their teeth, or tilt angle greater than the maximum tilt angle threshold indicates that the device is being held crookedly), then the system is determined to be in a correction guidance state. In this state, the control module 500 controls the interactive prompt unit 650 to output prompt information containing action correction information.

[0071] Preferably, the control module 500 instructs the visual prompting unit 610 to call a pre-stored negative feedback cartoon interface (e.g., displaying a virtual pet image with a sad expression or an animation guiding movement) in the memory, while the synchronous instruction audio output unit 620 plays a pre-recorded anthropomorphic corrective voice (e.g., "Please close your mouth a little tighter" or "Please hold the machine upright"). Through this intuitive and engaging audio-visual feedback, leveraging the psychological characteristic that children easily empathize with cartoon characters, the child is guided to actively adjust their posture to meet the nebulization requirements again.

[0072] Alternatively, the control module 500 can also control the visual prompting unit 610 to display a flashing border of a specific color (such as an orange warning border) at the edge of the screen, and cooperate with the audio output unit 620 to emit a soft "beep" prompting sound, so as to remind the caregiver to intervene and assist the child in adjusting the posture in a non-verbal prompting manner.

[0073] Alternatively, the control module 500 can also extract specific deviation data and display a virtual three-dimensional attitude indicator (such as a tilted protractor graphic or pressure distribution heatmap) on the visual prompting unit 610 to precisely guide the direction of attitude and bite force correction in a digital and visual manner.

[0074] When the control module 500 determines that the compliance monitoring data meets the preset compliance benchmark (i.e., both pressure and posture meet the standard specifications), it determines that the system is in normal working condition. The control module 500 controls the interactive prompt unit 650 to output positive guidance prompts. For example, the control module 500 instructs the visual prompt unit 610 to display a smiling cartoon background and instructs the audio output unit 620 to play soothing background music at an appropriate volume, thereby encouraging the child to continue maintaining the current compliant nebulization posture by establishing a positive sensory feedback environment.

[0075] Furthermore, to address the challenge of children's short attention spans and difficulty maintaining monotonous atomization movements for extended periods, the control module 500 is equipped with a timing function module. When the system is in normal working condition, the timing function module begins to accumulate the time; if the data deviates from the compliance benchmark during this period, the timer is paused or reset. When the control module 500 determines that the system has been in normal working condition for a cumulative period of time reaching a preset time threshold (e.g., continuously meeting the standard for 30 or 60 seconds), the control module 500 determines that the system enters an incentive state and controls the interactive prompt unit 650 to output advanced incentive interaction information.

[0076] Preferably, the control module 500 instructs the visual cue unit 610 to overlay a reward effect layer on the original smiling cartoon image, such as rendering celebratory element animations like crowns and star badges, and instructs the audio output unit 620 to play positively encouraging sound effects with clear approval. This time-based, step-by-step positive reinforcement mechanism can continuously provide short-term goal-driven motivation for children throughout the long nebulizer treatment process, significantly improving children's compliance with the nebulizer treatment process.

[0077] Alternatively, the system has pre-loaded children's story animation videos segmented by time nodes in its data storage. Whenever the continuous normal working state reaches a preset time threshold, the control module 500 controls the visual prompt unit 610 to unlock and play the next segment of the animation video, thereby using the child's anticipation of the story's development to induce them to spontaneously maintain the correct operating posture until the nebulizer treatment course ends.

[0078] Alternatively, when the system enters the incentive state after reaching a preset time threshold, the control module 500 not only provides audio and visual feedback on the device side, but also sends the achievement milestone data to the guardian's smart terminal via a built-in wireless communication module (such as a Bluetooth Low Energy module). This data can trigger the accompanying application on the smart terminal to pop up a digital reward badge, or prompt parents to give the child a tangible reward in real life (such as redeeming snacks or toy stickers), thereby naturally extending the adherence guidance on the device side to the real-world interaction of family therapy, constructing a more comprehensive closed loop for doctor-patient adherence management.

[0079] like Figure 10 As shown, to meet the needs of multiple application scenarios, the piping structure at the bottom of the main body 100 can be assembled with a connecting pipe to connect to a large medical nebulizer gas source system in a medical institution. In this application scenario, the air inlet connector at the bottom of the main body 100 is connected to the air inlet of the rotor 131 located in the upper middle part of the main body (see...). Figure 6 and Figure 7Fluid communication is achieved through a flexible silicone gas-conducting tube that runs through the internal space of the main body. The two ends of this flexible silicone gas-conducting tube are fixed to the corresponding air inlet connector and the inlet of the rotor chamber by clamps, thereby ensuring the pressure air path for the external air source to be transmitted from the bottom of the equipment to the flow regulating component 130.

[0080] like Figure 11 As shown, the main body 100 of the present invention adopts a modular and detachable design. The detection module 400 and flow regulation component 130 inside can be fully exposed by unfolding the outer shell, which provides great convenience for daily replacement of parts and high-standard medical-grade deep disinfection.

[0081] It should be noted that the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this invention, and these solutions all fall within the scope of this invention and its protection. Those skilled in the art should understand that this specification and its accompanying drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this invention is defined by the claims and their equivalents. This specification contains multiple inventive concepts; terms such as "preferredly," "according to a preferred embodiment," or "optionally" indicate that the corresponding paragraph discloses an independent concept. The applicant reserves the right to file divisional applications based on each inventive concept.

Claims

1. A multidimensional feedback-based interactive nebulized inhalation system for children, characterized in that, include: The flow regulating component (130) is connected to the gas path supplying the nebulized gas flow and has a drug delivery state for guiding the nebulized gas flow to the child and a blocking state for stopping the output of the nebulized gas flow to the child. The detection module (400) is configured to acquire vital sign monitoring data to characterize the child's compliance with nebulization and respiratory safety status; The feedback execution module (600) includes an interactive prompting unit (650) and a drive unit (640) that is drivenly connected to the flow regulation component (130). The control module (500) is communicatively connected to the detection module (400) and the feedback execution module (600); The control module (500) is configured to execute the following processing flow: Receive the vital signs monitoring data to assess airway safety risks and nebulization operation compliance, respectively; When there is an abnormal risk to airway safety, a collaborative intervention command is generated: the drive unit (640) is instructed to switch the flow regulation component (130) to the blocking state, and the interactive prompt unit (650) is simultaneously controlled to output soothing interactive information. When there is no risk of airway safety abnormalities, the interactive prompting unit (650) is controlled to output interactive information for action correction or positive guidance based on the compliance assessment results.

2. The atomizing inhalation system according to claim 1, characterized in that, The system includes a pressure relief pipe (110.1) that is connected to the outside atmosphere. The flow regulating assembly (130) includes a hollow rotating wheel (131), the peripheral wall of which is provided with a vent for providing the drug delivery state and a non-porous wall section and a pressure relief hole (131.4) for providing the blocking state. During the drug administration process, the vent connects the airway to the child's end; In the blocked state, the non-porous wall section physically cuts off the air passage facing the child, and the pressure relief hole (131.4) connects the air passage to the pressure relief pipe (110.1) to release the air pressure in the air passage outward.

3. The nebulized inhalation system according to any one of claims 1 or 2, characterized in that, When generating the collaborative intervention command, the control module (500) sends a control signal to the drive unit (640) to drive the wheel (131) to rotate; The vent hole and the pressure relief hole (131.4) have a preset relative position difference on the rotor (131), so that when the non-porous wall section blocks the air passage, the pressure relief hole (131.4) is connected to the pressure relief pipe (110.1).

4. The nebulizing inhalation system according to any one of claims 1 to 3, characterized in that, The vital signs monitoring data includes respiratory acoustic data collected by the acoustic sensing unit (430); When assessing the airway safety risk, the control module (500) is configured to extract a specified frequency band from the acoustic data of the respiratory tract to obtain a filtered acoustic signal. The filtered acoustic signal is compared with a preset feature matching model. If the comparison result indicates that the filtered acoustic signal matches the feature matching model, it is determined that there is an abnormal risk to airway safety.

5. The nebulizing inhalation system according to any one of claims 1 to 4, characterized in that, The vital signs monitoring data also includes equipment tilt attitude data collected by the attitude sensing unit (420); When the control module (500) determines that there is an abnormal risk to airway safety, it is configured to make a judgment by combining the filtered acoustic signal and the device tilt attitude data: when the filtered acoustic signal conforms to the feature matching model and the tilt angle change indicated by the device tilt attitude data is detected to exceed a preset threshold, the collaborative intervention command is confirmed to be generated.

6. The nebulized inhalation system according to any one of claims 1 to 5, characterized in that, The interactive prompting unit (650) includes a visual prompting unit (610) and an audio output unit (620). When generating the collaborative intervention command, the control module (500) controls the output of the soothing interactive information, including: instructing the visual cue unit (610) to lower the display brightness parameter and / or instructing the audio output unit (620) to stop playing the voice cue. The reduction of the brightness parameter and the cessation of the voice prompt are configured to be triggered synchronously with the mechanical action of the flow adjustment component (130) switching to the blocking state, so as to reduce the intensity of the sound and light stimulation of the device on the child while physically cutting off the airflow.

7. The nebulizing inhalation system according to any one of claims 1 to 6, characterized in that, The detection module (400) also includes a bypass sound tube; The acoustic sensing unit (430) is disposed outside the air chamber through which the atomizing airflow flows, and is connected to the interior of the air chamber through the bypass sound guide tube to obtain the acoustic data of the respiratory tract.

8. The nebulizing inhalation system according to any one of claims 1 to 7, characterized in that, When there is no risk of airway safety abnormalities, the control module (500) is configured to perform the following determination based on the result of the nebulization operation compliance assessment: If the compliance monitoring data used to assess the standardization of operation does not meet the preset compliance benchmark, the system is determined to be in a corrective guidance state, and the interactive prompt unit is controlled to output guidance information indicating the direction of deviation of the device tilt posture or lip contact pressure relative to the compliance benchmark, so as to assist the child in adjusting the drug administration posture. If the compliance monitoring data reaches the compliance benchmark, the system is determined to be in normal working condition, and the interactive prompt unit is controlled to output positive guidance prompts to remind users to maintain the current drug administration posture.

9. The nebulizing inhalation system according to any one of claims 1 to 8, characterized in that, The vital signs monitoring data includes lip contact pressure data collected by the pressure sensing unit (410), which is used for compliance assessment of the atomization operation. The system also includes an atomizing mouthpiece (111), on which a pressure sensing unit (410) is disposed, and the pressure sensing unit (410) is covered with a flexible coating layer for blocking water vapor.

10. The nebulizing inhalation system according to any one of claims 1 to 9, characterized in that, The control module (500) is equipped with a timing function to record the cumulative duration of the system in the normal working state; When the determination system is in normal working state for a preset time threshold, the control module (500) determines that the system enters the incentive state and controls the interactive prompt unit to output advanced incentive interactive information. The incentive interactive information is configured to present feedback content that changes in level as the cumulative duration increases, so as to guide the child to extend the time for compliant drug administration.

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