A cough device that uses video animation to help patients carry out their treatment, particularly in inex mode.

Abstract

The invention relates to a cough device that delivers gas insufflation and exsufflation to a patient. It comprises a motorized turbine and a gas circuit with insufflation and exsufflation lines, a display (20), and control means configured to control the turbine and / or display on the display (20) a video animation implementing a first graphic representation (30) symbolizing at least the gas insufflation and exsufflation phases and a second graphic representation (40) symbolizing the patient. The dimensions of the first and second graphic representations displayed on the screen vary in correlation with and inversely proportional to the gas insufflation and exsufflation phases to assist the patient during treatment, particularly in INEX mode. The appearance and / or shape of the first and / or second graphic representations may also vary in correlation with the gas insufflation and exsufflation phases.

Description

[0001] The present invention relates to a cough assistance device or cough device for performing insufflations and exsufflations of gas to patients suffering from respiratory disorders requiring assistance in the evacuation of pulmonary secretions, which can be easily used by a person with little or no medical knowledge, typically a caregiver, a person from the patient's family circle, also called caregivers.

[0002] Medical devices called "cough assistants", "cough assistance devices", "cough device" or similar, are devices that complement medical ventilators, which generate controlled gas pressure to help a patient cough, expectorate and clear their airways.

[0003] The principle of a cough assist device is to help mobilize and expectorate bronchial secretions by inflating the lungs with positive pressure and then applying negative pressure to facilitate the movement of mucus. Such cough assist devices are described in particular by EP-A-3622991, EP-A-3622992, and EP-A-862922.

[0004] Cough assist devices typically include a motorized turbine, also called a compressor or micro-blower, rotating at a fixed or variable speed, coupled to one or more solenoid valves that direct the airflow from the turbine towards the patient during gas insufflation phases, and then from the patient back to the turbine during exsufflation phases. The patient is thus subjected to alternating phases of gas insufflation (IN) and exsufflation (EX).

[0005] During insufflation phases, the turbine outlet is fluid-connected to the patient, while during exsufflation phases, the turbine air inlet is fluid-connected to the patient to ensure suction. Pressure and flow sensors, working in conjunction with control systems, manage the different phases according to the selected settings, particularly the ventilation modes.

[0006] A gas oscillator may also be provided to increase the device's ability to mobilize pulmonary or bronchial secretions from treated patients.

[0007] The operation of these devices is usually entrusted to a healthcare professional, primarily physiotherapists. This therefore implies a systematic visit from the healthcare professional to each patient's home, sometimes several times a day when multiple daily sessions are required. Furthermore, the patient's treatment is not necessarily scheduled at the most convenient time, as it depends primarily on the healthcare professional's visit.

[0008] Since it is neither practical nor efficient, it would be desirable to be able to trigger a cough device usage session at the best time for the patient in order to make it more effective and also to considerably reduce patient stress and avoid potentially frequent movements of healthcare staff.

[0009] Furthermore, it can be difficult for some patients, especially pediatric patients (children...), to use the cough device correctly when a physiotherapist or similar is not present to help them, as they must be able to synchronize their breathing with the insufflation and exsufflation phases of gas by the turbine of the cough device, for the treatment to be effective.

[0010] We also know of US-A-2007 / 0199566, which teaches a medical ventilator capable of delivering gas insufflation and exsufflation to a patient. A graphic display shows a representation of the patient's lungs, the size of which increases or decreases based on measurements of a thoracic parameter, thus allowing the patient's inspirations and expirations to be monitored. However, the lung movement display only reflects the patient's breathing pattern and does not assist the patient in synchronizing their breathing with the gas insufflation and exsufflation phases of the cough device's turbine, since this display is based on measurements taken directly from the patient.

[0011] From there, the problem is to propose a cough assistance device or cough device that can be operated simply and implemented by a person less trained than a physiotherapist, for example a caregiver, a person from the patient's family circle... so as to be able to trigger in a patient, that is to say to start, a session of use of the cough device, at the most opportune time for the patient in question, and without having to specially bring in a qualified health professional such as a physiotherapist or similar, while obtaining a treatment as effective as in the presence of such a physiotherapist and / or making the patient adherent or more adherent to their treatment.

[0012] Put another way, we want to have a cough device that allows a patient to simply synchronize their breathing with the insufflation and exsufflation phases of gas by the turbine of the cough device in order to achieve effective treatment.

[0013] The invention relates to a cough device for performing insufflations and exsufflations of gas to a patient, comprising a motorized turbine in fluidic communication with a gas circuit including an insufflation line and an exsufflation line, a display screen, and control means including a microprocessor, configured to control the turbine and / or a display on the display screen, and in which the control means are configured to display on the display screen, a video animation implementing a first graphic representation symbolizing at least the phases of insufflation and exsufflation of gas and a second graphic representation symbolizing the patient.

[0014] In addition, it also includes memory features configured to store the animated video.

[0015] In the aforementioned cough device: The dimensions of the first and second graphic representations displayed on the display screen vary in correlation with the phases of gas insufflation and exsufflation by the turbine, and inversely to each other (e.g., one increases in size when the other decreases), in order to help the patient synchronize (i.e., match) their breathing with the phases of gas insufflation and exsufflation operated by the turbine of the cough device, that is to say, by matching their inspirations and expirations to the variations in dimensions of the graphic representations displayed on the display screen.The turbine includes an electric motor, the insufflation line being fluidly connected to a gas outlet of the turbine and the exsufflation line being fluidly tuned to a gas inlet of the turbine, and the control means are configured to control the turbine so as to cyclically trigger an insufflation phase and an exsufflation phase, such that: during each insufflation phase, the turbine generates a positive pressure (P+) of between 5 and 70 mbar (relative pressure with respect to atmospheric pressure) and during each exsufflation phase, the turbine generates a negative pressure (P-) of between 0 and -70 mbar (relative pressure with respect to atmospheric pressure).

[0016] Preferably, the control means are also configured to display on the display screen, said video animation in which the shape and / or appearance of the first and / or second graphic representations displayed on the display screen also vary in correlation with the phases of insufflation and exsufflation of gas by the turbine, so as to help the patient to synchronize (i.e. match) his breathing with the phases of insufflation and exsufflation of gas operated by the turbine of the cough device, in particular based on the variations in shape and / or appearance, and dimensions of the graphic representations displayed on the display screen.

[0017] Depending on the case, the disclosed cough device may include one or more of the following technical features: The control means are configured to display on the display screen a video animation in which the shape and appearance of the first and second graphic representations vary in correlation with the insufflation and exsufflation phases of gas by the turbine. The video animation comprises a plurality of successive images. The control means are configured to display on the display screen a video animation in which the shape, appearance, and / or dimensions of the first and second graphic representations displayed on the screen vary synchronously with each other. The control means are configured to command, in response to activation by the user of a treatment start / stop button, a start of the turbine and simultaneously of the video animation, i.e., the start of patient treatment.The control means are configured to stop, in response to user activation of treatment start / stop means, both the turbine and the video animation, i.e., the patient treatment. The treatment start / stop means comprise a single start / stop button (i.e., one and the same button) controlling the start and stop of the turbine and simultaneously the video animation. Alternatively, the treatment start / stop means comprise two separate buttons, one controlling the start and the other the stop of the turbine and simultaneously the video animation. The touch button(s) is / are displayed on the display screen; i.e., the display screen is configured to display the touch button(s). The touch button(s) cooperate with the control means.The size variations of the first and / or second graphic representations occur progressively between the beginning and end of the gas insufflation and exsufflation phases and / or the patient's inspiratory and expiratory phases. The first graphic representation depicts or includes an object containing gas, i.e., symbolizing the gas source, for example, a balloon. The second graphic representation depicts or includes an animal or a character, for example, a chameleon or any other animal, i.e., an animal or a character symbolizing the patient undergoing gas insufflation and exsufflation treatment. The control mechanisms are configured to begin the video animation displayed after the user activates the gas insufflation / exsufflation start mechanisms.The dimensions (and therefore also the general shape) of the first and second graphic representations displayed on the screen vary inversely with each other; that is, the dimensions of the second graphic representation increase when the dimensions of the first graphic representation decrease, and vice versa (i.e., their variation in size and / or shape is correlated). The first graphic representation symbolizes the insufflation and exsufflation phases of gas from the cough device, and possibly a pause phase separating one exsufflation phase from the next, during which no gas is insufflated or exsufflated. The second graphic representation symbolizes at least the patient's inspiration and expiration phases, and possibly the pause phase during which the patient neither inhales nor exhales gas.The control means are configured to command the turbine to deliver gas, typically air, to the patient. The control means are configured to command the turbine to expel gas from the patient. The display screen is configured to show the animated video in color or alternatively in black and white. The device further includes storage means configured to store the plurality of images forming the animated video, for example, EEPROM or similar computer memory. The animated video is displayed in real time during the gas insufflation and exsufflation phases. The ventilation mode selection means include one or more touch buttons. The device further includes means for selecting a ventilation mode from among the INEX and IPPB modes.The ventilation mode selection means are configured to select a set of ventilation parameters or presets, also called a ventilation program, suitable for implementing ventilation in INEX or IPPB mode. The ventilation preset(s) for each ventilation mode are set or selected by a healthcare professional. The preset(s) for each ventilation mode are stored. The display screen is configured to show the touch key(s) configured to allow a user to select a desired ventilation mode from among the INEX and IPPB modes.The INEX mode corresponds to an alternation of gas insufflation and exsufflation phases, possibly separated by a pause phase, with gas insufflation at a fairly high positive pressure, for example at least 5 mbar, preferably at least 15 to 20 mbar, for example around 30 bar, for a short insufflation time, for example from 1 to 3 sec, followed by gas exsufflation by depressurization (i.e. negative pressure), for example around -30 mbar, of the lungs and rib cage of the patient to cause the mobilization and expulsion / extraction of pulmonary and / or bronchial secretions. The high positive pressure, the negative pressure and the durations of insufflation and / or exsufflation are adjustable.The IPPB mode corresponds to an alternation of gas insufflation and exsufflation phases, possibly separated by a pause phase, with gas insufflation at a low flow rate, for example between 5 and 100 L / min, for example between 10 and 15 L / min, until a maximum set pressure or maximum insufflation time is reached, typically a maximum set pressure between 10 and 50 mbar, for example in the order of 30 to 40 mbar, for a variable insufflation time (which can reach the order of 10 seconds) and with the supply of a variable volume of gas, depending on the elasticity of the patient's lungs and rib cage, followed by gas exsufflation without depressurizing (negative pressure) the patient's lungs and rib cage, for example for a duration of 1 to 3 seconds, to cause alveolar recruitment and / or mobilization of secretions and expectoration. The pressures (i.e.The positive and / or negative pressure and / or the maximum insufflation and / or exsufflation duration are adjustable. The animation video display is synchronized with the insufflation and exsufflation durations during the gas insufflation or exsufflation phases, particularly in INEX mode. The insufflation and exsufflation durations are adjustable and / or configurable. It also includes means for adjusting the insufflation and / or exsufflation duration and / or the positive insufflation and / or negative exsufflation pressure, particularly in INEX mode. The animated video comprises several different successive images including the first and second graphic representations whose shape, appearance and / or dimensions displayed on the display screen vary in correlation with the durations of insufflation and exsufflation during the gas insufflation and exsufflation phases, particularly in INEX mode.The display screen also includes means for selecting a sub-mode of operation, preferably one or more touch buttons displayed on the screen, allowing the selection of a sub-mode of operation chosen from among the automatic (AUTO) and manual modes. The control means are configured to display on the screen and start the video animation only after the user selects a preset corresponding to an automatic (AUTO) sub-mode of the INEX ventilation mode, i.e., INEX AUTO ventilation. The storage means are configured to save, i.e., memorize, the presets (i.e., sets of parameters) corresponding to the INEX and IPPB modes, and possibly other presets, including an INEX AUTO preset.The presets include ventilation parameters adapted to INEX and IPPB modes, or other modes, including INEX AUTO. Specifically, the presets include inspiratory and expiratory pressure values, inspiratory and expiratory times, the number of ventilation cycles, a pause duration, a PEEP (positive end-expiratory pressure) level, oscillation criteria, a trigger threshold, or other parameters. The presets are set by healthcare professionals, such as a physician or physiotherapist, and stored in the device's memory prior to a therapy session.The control means are further configured to retrieve, within the memory, at least one given preset adapted to the implementation of an INEX or IPPB ventilation mode in response to a user's selection, via the ventilation mode selection means, of one of said INEX or IPPB ventilation modes, including the AUTO sub-mode, i.e., INEX AUTO in particular. It also includes a button for selecting or adding one or more additional ventilation cycles, preferably a touch-sensitive button displayed on the screen. A ventilation cycle comprises an insufflation phase, an exsufflation phase, and optionally a pause phase. Typically, the duration of a cycle is on the order of 5 to 12 seconds. It also includes means for stopping a cycle, typically a touch-sensitive button displayed on the screen, allowing a ventilation cycle to be stopped in progress, i.e., to be stopped before the end of the cycle.It includes a button to turn the appliance on or off, preferably a touch-sensitive button displayed on the screen. It includes at least one button to adjust or select one or more presets suitable for INEX and IPPB ventilation modes, preferably a touch-sensitive button displayed on the screen. It also includes a button to select a preset for the automatic (AUTO) sub-mode in INEX ventilation mode, i.e., ventilation in INEX AUTO mode, preferably a touch-sensitive button displayed on the screen. Finally, it includes a cycle stop button to halt a ventilation cycle in progress, i.e., before the end of the cycle, preferably a touch-sensitive button displayed on the screen.It further includes a treatment start / stop button to start and / or stop the turbine's operation, i.e., to begin or stop gas insufflation and exsufflation, in particular to start or stop a patient treatment session, preferably a touch-sensitive button displayed on the screen. It also includes a menu button to access different menus or selections, preferably a touch-sensitive button displayed on the screen. The display screen is configured to also show a maximum gas flow rate (in L / min, for example), a tidal volume (in mL, for example), and / or other information or parameters. The control means are configured to operate the turbine to deliver gas during the insufflation and exsufflation phases to the patient. It includes a rigid casing, i.e., an external shell.The motorized turbine, the supply line, the exhaust line, and the control systems are arranged within the casing. The display screen is mounted on the casing. The display screen is fixed, i.e., attached, either detachably or permanently, to the casing. It includes a human-machine interface (HMI), also called a graphical user interface (GUI), configured to allow a user to make one or more selections or choices, to enter or adjust / modify one or more setpoint values, including high and low pressure values, and the timing of the different phases. The display screen is part of the HMI. The display screen is a digital touchscreen, typically with a color display. The display screen also includes one or more touch buttons for making selections, confirmations, adjustments, and starting or stopping operation.The touch keys are digitally actuation, meaning they are activated when the user presses them with their finger, typically their index finger. The display screen is configured to display information in the form of alphanumeric characters, graphical representations (e.g., graphs, curves, drawings, icons, etc.), photos, video animations, or other formats. A common gas supply line to a patient is fluidly connected to the aforementioned insufflation and exsufflation lines. It includes pneumatic valves arranged on the exsufflation and insufflation lines and pneumatic control means that pneumatically operate said pneumatic valves.The pneumatic valves arranged on the exhaust line are configured to control fluid communication between the exhaust line and the atmosphere and / or fluid communication between the common gas supply line and the exhaust line. The pneumatic valves arranged on the supply line are configured to control fluid communication between the supply line and the atmosphere and / or fluid communication between the supply line and the common gas supply line. The turbine is configured to deliver air. Each supply phase lasts between 0.5 and 10 seconds, typically up to approximately 3 to 5 seconds. Each exhaust phase lasts between 0.5 and 10 seconds, typically up to approximately 3 to 5 seconds. the control systems are configured to command the turbine in such a way as to operate, i.e.The system cyclically triggers an insufflation phase and an exsufflation phase by repeatedly alternating between the insufflation and exsufflation phases. Optionally, each insufflation phase and the following exsufflation phase are themselves followed by a pause phase, i.e., located between an exsufflation phase and the next insufflation phase. During each pause phase, the turbine is controlled by the control means to deliver a pause pressure greater than or equal to 0 mbar in the insufflation line, preferably a pause pressure between 0 and 30 mbar, for example, in the range of 10 to 20 mbar. Each pause phase has a pause duration of between 0 and approximately 5 seconds, typically less than 2 seconds. The control means include a digital (micro)controller electrically connected to the turbine. The control means include a microprocessor, preferably mounted on an electronic board.The turbine comprises an electric motor powered by an electric current. The turbine includes an electric motor driving a vane arranged in the internal compartment of a volute. During an insufflation phase and / or a possible pause phase, the turbine delivers pressurized air (i.e., > atmospheric pressure) into the insufflation line fluidically connected to the turbine's gas outlet; that is, the turbine generates a positive pressure (P+) in said insufflation line. The pressurized air flows through this line towards the common gas supply line and thus to the patient. During each possible pause phase, the turbine generates a positive pressure (P+) between 0 and 30 mbar (relative pressure to atmospheric pressure). During each exsufflation phase, the turbine generates a negative pressure (P-) on the turbine's gas inlet side; that is, a vacuum (i.e., a vacuum).a pressure less than or equal to atmospheric pressure), in the exhaust line and in the common gas supply line, which is fluidically connected to the exhaust line. This creates negative pressure in the patient's airway. The aspirated air is then delivered in the insufflation line and subsequently vented to the ambient atmosphere via the vent port of the second pneumatic valve. The turbine is driven to achieve a maximum rotational speed of 75,000 rpm, typically between 10,000 and 50,000 rpm. It includes electrical power supply means providing power to at least the motorized turbine, the HMI and control means, and optionally, the pump or compressor. The electrical power supply means include at least one battery, preferably rechargeable, and / or an electrical plug and cord for connection to the mains (e.g.110 / 230 V), and possibly a current transformer. The gas circuit, in particular the common gas supply line, is fluidly connected to the patient via a breathing interface, such as a breathing mask, for example a full-face mask, or a mouthpiece. The common gas supply line is fluidly connected to the breathing interface via a flexible hose or similar.

[0018] The cough device of the invention is suitable for the treatment of adult patients, including the elderly, but also pediatric patients, i.e. children or adolescents.

[0019] The invention is defined by the attached claims.

[0020] The invention will now be better understood through the following detailed description, given by way of illustration but not limitation, with reference to the attached figures, among which: [ Fig. 1 ] is a diagram of the internal architecture of a gas insufflation and exsufflation device, [ Fig. 2 ] illustrates a schematic embodiment of the display screen of a cough device according to the invention before the start of a treatment, [ Fig. 3 ] diagram of the display screen of [ Fig. 2 ] during a gas insufflation in INEX mode, and [ Fig. 4 ] diagram of the display screen of [ Fig. 2 ] during a gas exsufflation in INEX mode.

[0021] [ Fig. 1 [Diagram] illustrates the internal architecture of a cough assistance device 10, or cough apparatus, such as that of the invention, enabling the delivery of gas insufflation and exsufflation to a patient suffering from respiratory disorders requiring assistance in clearing pulmonary secretions. This architecture is conventional and described in detail by EP-A-3622991, to which reference may be made for further details.

[0022] Schematically, the cough device 10 includes a motorized turbine 1, also called a compressor or (micro)blower, comprising a gas inlet 2 through which air is drawn in and enters the turbine 1 and a gas outlet 3 through which air, preferably at positive pressure, is expelled and exits the turbine 1. The turbine 1 classically includes an electric motor driving a vane arranged in the internal compartment of the volute and used to deliver air under pressure (> 1 bar).

[0023] It is also planned to have control means 16 controlling in particular the turbine 1, via an electrical link, to deliver gas during at least the insufflation and exsufflation phases.

[0024] Preferably, each insufflation / exsufflation sequence is followed by a pause phase, situated between an exsufflation phase and the next insufflation phase, having a duration of approximately 0 to 5 seconds. During the pause phase, the turbine 1 is controlled by the control means 16 to deliver a gas pressure of between 0 and 30 mbar in the insufflation line 4 and the common line 6.

[0025] Preferably, the control means 16 include one or more microprocessors, typically a digital controller electrically connected to the turbine 1. The digital controller may include, for example, an electronic microcontroller board implementing one or more algorithms used to control the turbine 1 and storage means, such as flash memory or other.

[0026] During the operation of the device 1, the turbine 1 supplies air to a supply line 4 which is fluidly connected to the gas outlet 3 of the turbine 1 and allows the air expelled by the turbine 1 to be conveyed. In addition, an exhaust line 5 is fluidly connected to the gas inlet 2 of the turbine 1 and allows, in particular, the air drawn in by the turbine 1 to be conveyed to it. The supply lines 4 and exhaust lines 5 are, for example, gas ducts, gas passages or the like, arranged in the cough apparatus 10.

[0027] The insufflation lines 4 and exsufflation lines 5 are also fluidly connected to a common gas supply line 6, such as a gas duct or similar, which is fluidly connected to a patient, for example via a flexible hose fluidly connected to a breathing interface, such as a breathing mask or similar, so as to supply the patient's airways, in particular his lungs, with pressurized air during the insufflation phases and, conversely, to extract the gas during the exsufflation phases and thus help him to expel his pulmonary or bronchial secretions.

[0028] The insufflation lines 4 and exsufflation lines 5 include several pneumatic valves 11, 12, 13, 14 allowing control of gas flows during successive insufflation and exsufflation phases, and optionally during pause and / or transient phases.

[0029] Schematically, a first 11 and a fourth 14 pneumatic valves are arranged on the exhaust line 5. The first pneumatic valve 11 controls the fluidic communication of the exhaust line 5 with the ambient atmosphere, via an inlet orifice 11a, to allow atmospheric air to enter and supply the turbine 1, during the insufflation phases, while the fourth pneumatic valve 14 controls the fluidic communication of the common gas supply line 6 with the exhaust line 5, during the exhaust phases.

[0030] Furthermore, a second 12 and a third 13 pneumatic valves are arranged on the insufflation line 4. The second pneumatic valve 12 controls the fluidic communication of the insufflation line 4 with the atmosphere, via a gas evacuation orifice 12a to evacuate the gas under pressure, during the exsufflation phases, as explained below, while the third pneumatic valve 13 controls the fluidic communication of the insufflation line 4 with the common gas supply line 6, to supply the patient with air, during the insufflation phases.

[0031] These pneumatic valves 11-14 are themselves pneumatically controlled by pneumatic control means 7, 8 comprising first and second pneumatic solenoid valves 7, 8, namely miniature solenoid valves with low peak consumption (i.e. < 10 Watt) which are electrically controlled, via one or more electrical links, by the control means 16 of the cough device 10, depending on the insufflation or exsufflation phase to be operated, and / or any pause phases.

[0032] The first and second pneumatic solenoid valves 7, 8 are also pneumatically connected to at least one pneumatic pilot line, i.e. at least one positive pressure supply line, for example a branching gas line or several lines, connecting these first and second pneumatic solenoid valves 7, 8 to a positive pressure source 9, i.e. a pressurized gas source, such as an additional micro-pump or micro-compressor.

[0033] In addition, the first and second solenoid valves 7, 8 are also fluidly connected to a so-called "negative" pressure source, simply called the negative pressure source, via at least one negative pressure supply line, for example to the blow-off line 5 where a negative pressure (P-) exists during the blow-off phases.

[0034] The operation and structure of these pneumatic and solenoid valves are detailed in EP-A-3622991, which can be consulted for further details.

[0035] For example, in INEX mode, the insufflation of gas by turbine 1 is carried out at a fairly high positive pressure, for example on the order of 30 bar, for a short insufflation time, typically at most on the order of 3 sec, followed by an exsufflation of gas by depressurization (i.e. negative pressure), for example on the order of -30 mbar, of the lungs and rib cage of the patient to cause the mobilization and expulsion / extraction of the pulmonary and / or bronchial secretions of the patient.

[0036] In other words, during an insufflation phase, turbine 1 generates a positive pressure (P+) on the side of the turbine 1 gas outlet 3, i.e. an overpressure, in the insufflation line 4 and in the common gas supply line 6 which is fluidly connected to the insufflation line 5, for a short insufflation period, which puts the patient's respiratory tract under overpressure due to the supply of gas, i.e. air, under pressure.

[0037] Then, during the exsufflation phase which follows the insufflation phase, the turbine 1 generates a sudden negative pressure (P-) on the side of the gas inlet 2 of the turbine 1, i.e. a vacuum (depression), in the exsufflation line 5 and in the common gas supply line 6 which is fluidly connected to the exsufflation line 5, which puts the patient's respiratory tract into depression, for a similarly short exsufflation time, i.e. less than 3 seconds, thereby causing the expulsion / extraction of the patient's pulmonary and / or bronchial secretions.

[0038] The aspirated air is then delivered in the supply line 5, and then vented to the ambient atmosphere, via the vent orifice 12a of the second pneumatic valve 12. For example, the turbine 1 generates a negative pressure (P-) which can reach approximately -70 mbar, for example on the order of -30 mbar.

[0039] High positive pressure (P+), negative pressure (P-), and insufflation and / or exsufflation times, as well as all other ventilatory parameters, are adjustable. They are set by healthcare personnel and then stored as presets, i.e., sets of respiratory parameters corresponding to the INEX and IPPB ventilation modes.

[0040] During the insufflation and exsufflation phases, the turbine 1 is controlled by the control means 16. The maximum rotational speed of the turbine can reach approximately 75,000 rpm, typically between 10,000 and 50,000 rpm.

[0041] The components of the cough device 10 shown on the [ Fig. 1 ] can be arranged in a rigid outer casing or shell, for example a polymer or similar casing.

[0042] A human-machine interface 19 or HMI, arranged on the casing 18, allows the user to enter setpoint values ​​into the cough device 10, to make selections or choices...

[0043] The HMI 19 includes a touch screen 20, preferably with color display, and selection keys 21 or other, including touch-sensitive numeric keys displayed on the touch screen 20, i.e. digital screen.

[0044] Power supply means 15 (not shown) supply electrical current to the various components of the cough device 10 which require it, namely in particular the motorized turbine 1, the control means 16, the HMI 19, the display screen 20... The power supply means 15 include for example one (or more) battery, preferably rechargeable, and / or an electrical plug and an electrical cord (not shown) for connection to the mains, e.g. 110 / 230 V, with or without a current transformer.

[0045] Generally, a cough device 10 according to the present invention is intended for use in delivering gas (i.e., air) insufflations and exsufflations to patients unable to manage their secretions independently, whether these patients are adults or children. It can be used at home or in the hospital, with invasive (e.g., tracheal tubes) or non-invasive (e.g., masks) respiratory interfaces.

[0046] The cough device 10 is preferably light and compact enough to be easily transportable.

[0047] The control means 16 are also configured to control the display of information of any kind, namely alphanumeric characters, icons, graphic representations, curves or others, on the display screen 20 of the HMI 19, which then operates a display of this information in such a way as to assist, inform or otherwise, the user.

[0048] According to the present invention, in order to allow the use of the cough device 10 by a person less trained than a physiotherapist, for example a caregiver, a family member of the patient, etc., so as to be able to trigger a session of use of the cough device 10 for the patient at the most opportune time for the patient in question, without having to specifically call in a qualified healthcare professional such as a physiotherapist or similar, and wait for their arrival, the control means 16 are configured to command a simultaneous display, on the touchscreen display 20, of a video animation implementing a first graphic representation 30 symbolizing the source of gas supply, i.e.at least the phases of gas insufflation and exsufflation and a second graphic representation 40 symbolizing the patient to be treated, and in which the shape, appearance and / or dimensions of the first and / or second graphic representations 30, 40 displayed on the display screen 20 vary in correlation with the phases of gas insufflation and exsufflation by the turbine 2 of the cough device 10, and also any possible pause phase, as illustrated on the [. Fig. 2] à [Fig. 4 ]. In particular, the dimensions of the first and second graphic representations 30, 40 displayed on the display screen 20 vary in correlation with the gas insufflation and exsufflation phases, and inversely with respect to each other.

[0049] In the embodiment illustrated in these [ Fig. 2] à [Fig. 4 ], regarding the INEX mode, the first graphic representation 30 symbolizing the insufflation and exsufflation phases of gas from the cough device 10 is represented by a gas container, namely here a balloon 31, while the second graphic representation 40 symbolizing the patient, in particular the inspiratory and expiratory phases of said patient during the treatment, is represented by an animal, namely here a chameleon 41. Of course, any other container and / or other animal or character may be suitable.

[0050] More specifically, in order to assist a person with little or no medical knowledge, for example a caregiver or a member of the patient's family (the caregivers), in the operation of a cough device 10 according to the invention so as to perform insufflations and exsufflations of gas to a patient suffering from respiratory disorders requiring assistance in clearing pulmonary secretions, the control means 16 control the display on the display screen 20, in the embodiment proposed as an example, namely here in INEX mode, of the animated video featuring a balloon 31, as the first graphic representation 30 symbolizing the insufflation and exsufflation phases performed by means of the cough device 10 and, furthermore, an animal, namely here a chameleon 41, as the second graphic representation 40 symbolizing the patient and their respiratory phases (i.e.inspiratory and expiratory), and preferably an optional pause phase.

[0051] In this video animation, the balloon 31 is connected to the chameleon 41 by additional graphic representations 50, 51, 52 displayed on screen 20, namely a tube 50, a breathing mask 51 and a breathing flow 52 symbolizing the circulation of gas between the balloon 31 and the chameleon 41. Of course, other graphic representations 30, 31, 40, 41, 50, 51 are possible.

[0052] We also see that screen 20 includes a background 53 comprising a background or similar, namely here a representation of a landscape, the balloon 31 and chameleon 41, as well as the additional graphic representations 50, 51, 52, superimposed on said landscape in order to create a pleasant and playful atmosphere for the user.

[0053] The cough device 10 also includes storage means 17, such as a memory card, for example an EEPROM or directly in an executable (i.e. processor program) or other, for storing the animation video (i.e. video animation) or other parameters, in particular the presets for INEX or IPPB modes.

[0054] The control means 16 are therefore configured to retrieve from the storage means 17 and then display on the screen 20, the video animation at the beginning of a treatment, in particular at the start of a gas insufflation phase, after selection of the desired ventilation mode, namely here the INEX mode, and then activation (i.e. digital press) by the user of a touch key 65 to start / stop treatment, as detailed below.

[0055] Furthermore, the control means 16 are also configured to retrieve the INEX or IPPB ventilation mode presets from the memory means 17 and then apply them, i.e. to control, for example, the turbine 2, after the user has selected the desired mode, typically after pressing a mode selection key 61, as explained below.

[0056] Thus, we see on [ Fig. 2 ], which shows screen 20 before the start of a process, that the display screen 20 of the HMI 19 includes other elements, such as means of activation, selection or similar, in particular selection keys, notably presets allow to select / activate, i.e. to use, presets (called ' presets (in English) pre-recorded, i.e. memorized, that is to say the particular settings (e.g. pressure, durations, pause, etc.) of the INEX and IPPB ventilation modes, which are therefore adapted to certain given clinical situations, for example for the night, for the morning...

[0057] For example, the display screen 20 of the HMI 19 includes, in the proposed embodiment: A touch button 60 to turn the device on or off (OFF). Touch buttons 61 to adjust or select stored presets adapted to INEX and IPPB ventilation modes, for example, to adjust insufflation and exsufflation times, P+ and P- pressures in INEX mode, inspiration and expiration times, etc. These presets correspond to sets of ventilation parameters chosen by healthcare professionals, such as a doctor or physiotherapist, and then stored in the device's memory 10. A touch button 62 to, for example, select a preset for ventilation in INEX AUTO mode, i.e., INEX mode with an automatic sub-mode (AUTO). A touch button 66 to select or add an additional ventilation cycle, if needed. a touch key 64 (SKIP) to stop a ventilation cycle in progress, i.e. before the end of the cycle.A touch-sensitive button 65 for starting / stopping treatment to start and / or stop the operation of turbine 2, and therefore to start or stop gas insufflations and exsufflations, in particular to start or stop a patient treatment session. A touch-sensitive button 63 for accessing different menus or selections.

[0058] The display screen 20 also allows the display, for example within a window 67 located at the top of screen 20, of a maximum gas flow rate (in L / min for example), a tidal volume of gas (in mL for example) and other information or parameters, such as the number of cycles and / or series....

[0059] Finally, the display screen 20 also includes, in the proposed embodiment, a top banner 68, in which various useful information is displayed, such as a reminder of the mode (here the INEX mode for example) and sub-mode (AUTO) that have been selected, an icon of the electric battery autonomy (here 76%), an icon of wireless transmission, for example in wifi, the date, the time.... or others.

[0060] [ Fig. 3 ] diagram shows the display on the display screen 20 during a gas insufflation, showing the video animation implemented by the control means 16, including the graphic representations 30, 40 of patient assistance, in particular the balloon 31 and the chameleon 51 chosen in the embodiment proposed here, at the beginning of a gas insufflation phase, i.e. at the beginning of a patient's treatment, while [ Fig. 4 ] diagram shows the display on the display screen 20, after the start of a gas exsufflation, knowing that the duration of an insufflation phase is for example on the order of 1 to 3 seconds and that of exsufflation is for example on the order of 1 to 3 seconds.

[0061] As can be seen, on the [ Fig. 2 ], the balloon 31 is represented (i.e. shape / appearance) fully inflated, therefore with maximum dimensions, whereas conversely, the chameleon 41 is represented (i.e. shape / appearance) with lungs (almost) empty of gas, therefore with "minimum" dimensions.

[0062] At the beginning of a gas insufflation phase, i.e., air, the control means 16 command the display on screen 20 of the video animation, after the user presses a touch key 65 for starting / stopping the treatment, so as to show the balloon 31 gradually deflating, i.e., the dimensions of the balloon and its appearance / shape are reduced on screen 20, thus mimicking a gas 52 exit from the balloon 31 onto the [ Fig. 3 ], and furthermore the chameleon 41 representing the patient who is breathing, gradually and simultaneously inflating, that is to say that the chameleon 41 grows / inflates (i.e. as the patient's lungs do), while at the same time, the balloon 31 deflates, thus mimicking an entry of gas 52 into the patient's lungs.

[0063] Conversely, during a gas exsufflation phase, the video animation shows the opposite, namely the balloon 31 inflating while simultaneously the chameleon 41, i.e. representing the patient during treatment, deflates, thus mimicking the expulsion of gas 52 from the patient's lungs, as schematically shown in [ Fig. 4 ].

[0064] Depending on the phases of gas insufflation and exsufflation, the dimensions of the chameleon 41 and those of the balloon 31 therefore vary in a correlated, i.e. synchronized, and inversely to each other.

[0065] The animation video display is synchronized with the insufflation and exsufflation times during the gas insufflation and exsufflation phases in INEX mode. Naturally, the insufflation and exsufflation times and other INEX mode parameters are adjustable, i.e., configurable, by healthcare personnel, such as a physician, and saved using the device's memory.

[0066] We also see the gas flow 52 going from the balloon 31 towards the chameleon 41 (cf. [ Fig. 3 ]) or conversely (cf. [ Fig. 4 ]) to diagram the flow of gas towards the patient or in the opposite direction.

[0067] During a possible pause phase (not shown) following a gas exsufflation phase, the video animation shows a non-evolving balloon 31 and chameleon 41, that is, their shapes, dimensions and appearance do not change on screen 20 since no gas exchange occurs between them.

[0068] In other words, schematically, screen 20 displays a video animation that shows: during each inspiration / breathing (cf. [ Fig. 3 ]), a chameleon 41 (i.e., patient) that inflates and a balloon 31 that deflates, during each expiration / exsufflation (cf. [ Fig. 4 ]), a chameleon 41 (i.e. patient) which deflates and a balloon 31 which inflates, and during each possible pause, a chameleon 41 and a balloon 31 do not vary / change.

[0069] By displaying such representations 30, 40 on the screen 20, the cough device 10 provides a very useful visual aid to the patient and the person assisting him / her during the implementation of his / her treatment since the patient only has to match his / her inspiratory and expiratory phases to the inflation / deflation of the representations 30, 40 presented on the screen 20, i.e. chameleon 41 and balloon 31, namely; inhale during the time when the chameleon 41 inflates and exhale during the time when the chameleon 41 deflates.

[0070] The video animation displayed on screen 20 provides a genuine technical solution to the aforementioned problem. Indeed, by proceeding in this way—that is, by synchronizing its inspiratory and expiratory phases with the insufflation and exsufflation phases of gas by turbine 2 as shown in the video animation—the patient is assured of successfully completing their treatment, i.e., obtaining effective treatment (e.g., expulsion of secretions, mucus, or other substances), without requiring the on-site presence of qualified healthcare personnel, such as a physiotherapist or similar professional.

[0071] When the patient has successfully completed his treatment, i.e., has correctly synchronized his breathing with the insufflation and exsufflation phases of the cough device, the control means 16 can also be configured to display on the display screen 20, an additional video animation symbolizing this successful completion of his treatment by the patient, for example an additional video animation of the type of confetti shower or a reward such as a cup or trophy, or other.

[0072] The cough assistance device or cough device according to the invention makes it possible to effectively perform insufflations and exsufflations of gas to a patient suffering from respiratory disorders requiring assistance in the evacuation of pulmonary secretions, even when the patient is assisted by a person with little or no medical knowledge, for example a caregiver or a person from the patient's family circle, also called a "helper", since it is enough for them to match their breathing to the video animation that appears on the screen.

Claims

1. A cough assist device (10) for performing gas insufflations and exsufflations on a patient, comprising: - a turbine, a compressor or a (micro)blower (1) in fluid communication with a gas circuit (4, 5, 6) comprising an insufflation line (4) and an exsufflation line (5), - a display screen (20), - and pilot means (16) comprising a microprocessor, configured to control the turbine, the compressor or the (micro)blower (1) and a display on the display screen (20), and wherein the pilot means (16) are further configured to control a display on the display screen (20) of a video animation implementing a first graphical representation (30) symbolizing at least the gas insufflation and exsufflation phases and a second graphical representation (40) symbolizing the patient, wherein - it further comprises storage means configured to store the video animation, - the pilot means (16) are configured to control the turbine, the compressor or the (micro)blower (1) so as to cyclically trigger an insufflation phase and an exsufflation phase, and - the display sequence of the video animation is synchronized with the durations of insufflation and exsufflation, such that the dimensions of the first and second displayed graphical representations vary inversely to one another, or the shape or aspect of said first and second graphical representations (30, 40) vary, in correlation with said gas insufflation and exsufflation phases, - and the pilot means (16) are further configured to control the turbine, the compressor or the (micro)blower (1) to deliver a pause pressure greater than or equal to 0 mbar, during a pause phase separating an exsufflation phase from the following insufflation phase.

2. The device according to claim 1, characterized in that the pilot means (16) are configured to display on the display screen (20), a video animation in which the shape, the aspect and / or the dimensions of the first and second graphical representations (30, 40) displayed on the display screen (20) vary in a synchronized manner with respect to each other.

3. The device according to one of claims 1 or 2, characterized in that the variations in dimensions of the first graphical representation and of the second graphical representation occur progressively between the beginning and the end of the gas insufflation and exsufflation phases and / or of the inspiratory and expiratory phases of the patient.

4. The device according to one of claims 1 to 3, characterized in that: - the first graphical representation (30) represents or comprises an object containing gas, in particular a party balloon (31) and - the second graphical representation (40) represents or comprises an animal or a character, in particular a chameleon (41).

5. The device according to claim 1, characterized in that the pilot means (16) are configured to control the turbine, compressor or (micro)blower (1) so as to trigger cyclically and in alternation insufflation and exsufflation phases in INEX mode with gas insufflation at a positive pressure of at least 5 mbar followed by a gas exsufflation by creating a depression.

6. The device according to claim 1, characterized in that it comprises means for selecting a ventilation mode comprising at least one tactile key displayed on the display screen (20).

7. The device according to claim 6, characterized in that the selection means allow choosing a ventilation mode of INEX type.

8. The device according to claim 6 or 7, characterized in that the ventilation mode selection means are configured to select a set of ventilatory parameters or presettings adapted to the implementation of a ventilation in INEX ventilation mode.

9. The device according to claim 1, characterized in that the display screen (20) is a tactile screen configured to display the video animation in color.

10. The device according to claim 1 or 9, characterized in that the display screen (20) is configured to further display a maximum gas flow rate or a tidal volume of gas.

11. The device according to claim 1, characterized in that the pilot means (16) are configured to control the turbine, the compressor or the (micro)blower (1) to deliver a pause pressure comprised between 0 and 30 mbar.

12. The device according to one of claims 1 or 11, characterized in that the pilot means (16) are configured to operate, during a pause phase, a non-evolving display of the video animation in which the shapes, dimensions and aspects of the first and second displayed graphical representations (30, 40) do not change on the display screen (20).

13. The device according to claim 1, characterized in that the insufflation line (4) and exsufflation line (5) of the gas circuit (4, 5, 6) comprise several pneumatic valves (11, 12, 13, 14) allowing to control the gas flows during the successive insufflation and exsufflation phases, and during the pause phases.

14. The device according to claim 1, characterized in that each pause phase has a duration comprised between 0 and 5 seconds.

15. The device according to claim 1, characterized in that it further comprises: - treatment start / stop means comprising a single start / stop key (65) controlling the start and stop of the turbine, the compressor or the (micro)blower (1), and simultaneously of the video animation, and / or - pneumatic valves (12, 13) arranged on the insufflation line (4) and configured to control a fluid communication of the insufflation line (4) with a common gas supply line (6) fluidly connected to said insufflation line (4) and exsufflation line (5).

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