The invention relates to a breathing assistance apparatus that may be configured to reduce the risk of damage to electronics within the apparatus as a result of liquid leaks within the apparatus or impacts to the apparatus. In other forms, the apparatus may be configured to allow for easy assembly and/or safe operation.
A breathing assistance apparatus is disclosed, for use with delivery of respiratory gases to a patient. The breathing assistance apparatus includes a patient interface, having a body section adapted to cover the nose, or nose and mouth of a patient and a sealing interface. The sealing interface includes at least an outer sealing member. The outer sealing member is adapted to attach to the body section in a sealing manner and has a substantially thin section in at least its nasal bridge region. The thin section is substantially thinner than the rest of the outer sealing member. The patient interface comprises a mask body and a seal assembly. The seal assembly includes a flexible seal, and a rigid seal clip, the seal assembly being removably attached to the mask body via the rigid seal clip. The mask body and rigid seal clip are profiled to match the contours of a user's face so that the seal has a substantially constant wall depth.
A flow therapy apparatus can provide a hypoxic flow of gases to a user, for altitude training, athletic performance training, and other indications. The system can include an apparatus that can include a gas conduit, an ambient air inlet, and a hypoxic gas source inlet configured to connect to a hypoxic gas source and configured to create a hypoxic gas composition upon mixing of ambient air and the hypoxic gas. The system can also include a user interface, and a gas flow generation element configured to deliver the hypoxic gas composition to nares of the user at a predetermined flow rate of at least about 10 liters/minute. Methods are also disclosed.
A device for regulating pressure, the device including: a body having: an inlet; and a lumen in communication with the inlet; and one or more flow features, the one or more flow features including a flow restrictor for restricting flow through the lumen, wherein downstream of the flow restrictor is a protective portion that assists in protecting the restrictor from being impaired.
Disclosed is an apparatus configured to operate in at least one therapy mode and at least one non-therapy mode. After a predetermined time operating in the at least one non-therapy mode, the apparatus is configured to: transmit the data to a device, and/or receive a software package from a or the device, and/or receive therapy parameters from a or the device, and/or update parameters of the apparatus.
A breathing assistance apparatus comprising: a base unit (50); a portable display unit (3000, 3500, 4000) configured to removably connect to the base unit (50); and at least one sampling port (4600, 4700, 4701) coupled to or configured to removably couple to the base unit (50), the at least one sampling port (4600, 4700, 4701) being configured to connect with a sampling line (4602) associated with a patient, wherein the at least one sampling port (4600, 4700, 4701) is configured to, when the portable display unit (3000, 3500, 4000) is connected to the base unit (50), be accessible and minimise interference with the portable display unit (3000, 3500, 4000).
A valve with an internal member is disclosed which allows exhaled carbon dioxide to escape from a breathing circuit when the circuit gas pressure drops below a threshold pressure. The valve operates by occluding one or more ports under a relatively high pressure and opening the one or more ports under a relatively low pressure. The internal member is attached to the body of the valve at two or more locations on the internal member. The internal member moves in a direction perpendicular to the gas flow through the valve.
A61M 39/24 - Soupapes de retenue ou soupapes anti-retour
F16K 15/14 - Soupapes, clapets ou valves de retenue à corps de soupapes flexibles
F16K 31/12 - Moyens de fonctionnementDispositifs de retour à la position de repos actionnés par un fluide
F16K 31/122 - Moyens de fonctionnementDispositifs de retour à la position de repos actionnés par un fluide le fluide agissant sur un piston
F16K 31/124 - Moyens de fonctionnementDispositifs de retour à la position de repos actionnés par un fluide le fluide agissant sur un piston servo-commandé
9.
Closure of a fluid trap for a respiratory therapy device
Patient interface components and/or associated head gear and adjustment systems improve sealing and/or patient comfort and/or ease of use. The interface includes an inflating or ballooning seal. The headgear assembly can be connected to the interface with an elastic component and an inelastic component. The elastic component enabling a course fitting of the interface to the patient and the inelastic component enabling a final fitting of the interface to the patient.
A breathing assistance apparatus has a pressurised gases source featuring a lightweight impeller with a plastic shaft. The impeller is shroudless. The plastic shaft is supported within the stator by a bearing structure. A resilient motor mount couples the stator and the housing and provide compliance and/or damping for the motor.
Moisture conditions in a conduit, particularly a gases supply system conduit for supplying respiratory or surgical gases, can be detected using an electrical property of the conduit. Moisture conditions can also be detected in another component of the gases supply system. The detected moisture conditions can be managed to reduce and/or remove excess moisture in the system.
A61M 16/10 - Préparation de gaz ou vapeurs à respirer
G01N 27/22 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance en recherchant la capacité
A humidification system can include a heater base, a chamber, and a breathing circuit. The heater base includes a heater plate positioned in a recessed region, and a heat conductive portion of the chamber is configured to contact the heater plate. The heater base includes a guard configured to control movement of the chamber into and out of the recessed region. The guard includes an anti-racking mechanism. The chamber includes an inlet port, an outlet port. A downward extension extends into the chamber from the inlet port, and a baffle is disposed at a lower end of the downward extension. A component of the breathing circuit can include a conduit hanging end cap for shipping and storage. The end cap can include a hanging component to allow the breathing circuit component to be hung from a medical stand. The system can detect when breathing circuits are connected in reverse.
Systems and method for conducting respiratory therapy in a respiratory system can adjust a flow of respiratory gases to a patient based upon a detected patient breath cycle. The respiratory system can include a non-sealed patient interface. The respiratory system can be configured to deliver a high flow therapy. A patient breath cycle may be determined using one or more measured parameters, such as a flow rate, a blower motor speed, and/or a system pressure. A flow source may be adjusted to have a phase matching that of the patient's breath cycle, such that flow in increased in response to the patient inhaling, and decreased in response to the patient exhaling.
This invention relates to connectors to be provided into fluid communication or engagement either directly with, or via a component to be associated with, a terminal end of a breathing conduit. In at least one embodiment, the connector comprises a body having a first end and a second end, and an internal lumen for the passage of gas between the ends. The first end engageable with a terminal end of a conduit or a component to be associated therewith. The second end engageable with another connector. An internal surface of the body at the second end comprises internal connection features for connection with another connector to be received internally therein. An external surface of the body comprises one or more external alignment feature(s) for aligning the connector or another connection into an aligned orientation for connection therebetween.
A connector and tubing combination includes a tubing segment with an end piece, such as a tubing flange. The tubing flange can be secured within the connector by an outer sleeve and an inner sleeve of the connector. Both of the inner sleeve and the outer sleeve are located outside of the tubing flange and the tubing segment. In addition, the inner sleeve, outer sleeve and the tubing flange are mechanically connected.
F16L 37/133 - Accouplements du type à action rapide dans lesquels l'assemblage entre les extrémités s'aboutant ou se chevauchant est maintenu par des organes de blocage utilisant des crochets, cliquet, ou autres organes de blocage mobiles ou que l'on peut insérer utilisant des crochets flexibles
A valve for use with a respiratory system arranged to convey a breathable gas to a patient. wherein the valve allows gas from within the respiratory system to exit, comprising: a valve body including an inlet and an outlet. said inlet configured to be in fluid communication with the respiratory system: an actuator disposed within the valve body. in a flow path between the inlet and the outlet. wherein the actuator is biased towards the inlet and movement of the actuator away from the inlet being at least partially dependent on a pressure of the gas at the inlet. said movement adjusting the flow path between the inlet and the outlet. to regulate the pressure of the gas in the respiratory system within a predetermined range.
A system for selecting a mask for a patient for use with a respiratory therapy device, the mask suitable to deliver respiratory therapy to the patient. The system comprises a processor configured to: receive data representing at least one digital image of a face of a patient; identify a predefined reference facial feature appearing in the image, the predefined reference facial feature being an eye of the patient; determine a measurement for the eye of the patient within the image; allocate a predefined dimension to the measurement, and determine a scaling factor for the image, the scaling factor being a ratio between the measurement and the predefined dimension; identify a further facial feature in the image; determine a measurement of the further facial feature in the image; and calculate a dimension of the further facial feature using the scaling factor and the measurement of the further facial feature; and, a memory for storing mask sizing data associated with patient masks; the processor further configured to: compare the calculated dimension of the further facial feature with the stored mask sizing data associated with patient masks and select a mask for the patient in dependence on the comparison.
G16H 20/40 - TIC spécialement adaptées aux thérapies ou aux plans d’amélioration de la santé, p. ex. pour manier les prescriptions, orienter la thérapie ou surveiller l’observance par les patients concernant des thérapies mécaniques, la radiothérapie ou des thérapies invasives, p. ex. la chirurgie, la thérapie laser, la dialyse ou l’acuponcture
G06V 40/16 - Visages humains, p. ex. parties du visage, croquis ou expressions
G16H 10/20 - TIC spécialement adaptées au maniement ou au traitement des données médicales ou de soins de santé relatives aux patients pour des essais ou des questionnaires cliniques électroniques
21.
RESPIRATORY SYSTEM FOR FACILITATING RESPIRATORY PHYSIOTHERAPY
A breathing assistance apparatus configured to provide a flow of gases. The apparatus has a flow generator that is operable to generate a flow of, a breathing conduit, a mouthpiece attachment for breathing exercises that is connected to the breathing conduit; and a controller. The controller is configured to control the flow of gases delivered to the mouthpiece attachment to control a pneumatic resistance provided at the mouthpiece attachment while a user performs one or more steps of a breathing exercise. The breathing exercise can include: normal breathing, tidal breathing, maximal breathing, huffing, breathing against a fixed positive expiratory pressure (PEP), breathing against an oscillating positive expiratory pressure (OPEP), slow and deep inhalation, and/or pursed lip breathing..
A headgear assembly can include a pair of opposing, semi-rigid side arms. Each side arm can be pivotally coupled to an interface at a single location. Each side arm can extend from the single location across the user's cheeks and above the user's ears in use. The headgear assembly can include a top strap coupled to the pair of opposing, semi-rigid side arms, the top strap configured to extend around the top of a user's head. The headgear assembly can include a rear strap coupled to the pair of opposing, semi-rigid side arms, the rear strap configured to extend around the rear of a user's head. The headgear assembly can include a chin strap coupled to the pair of opposing, semi-rigid side arms, the chin strap configured to extend around the user's chin.
Some embodiments provide for an inspiratory limb for a breathing circuit that includes a first segment that comprises a first heater wire circuit and a second segment that comprises a second heater wire circuit. The inspiratory limb can include an intermediate connector that includes a connection circuit that electrically couples the first heater wire circuit to the second heater wire circuit. The inspiratory limb can be configured to operate in two modes wherein, in a first mode, electrical power passes through the first electrical connection to provide power to the first heater wire circuit without providing power to the second heater wire circuit, and in a second mode, electrical power pass through the first electrical connection to provide power to both the first heater wire circuit and the second heater wire circuit.
A humidification chamber (24, 50, 300, 400, 500, 600 or 700) for humidifying gases is provided comprising: a water tub that is configured to receive a volume of water; a gases inlet for receiving a flow of gases into an interior volume of the humidification chamber; and a gases outlet through which a humidified flow of gases may exit the interior volume of the humidification chamber. One or more fill apertures (120) are provided in fluid communication with the water tub such that the water tub can be filled with water through the one or more fill apertures. A sealing closure (850) is also provided and configured to be releaseably mounted on the humidification chamber (24, 50, 300, 400, 500, 600 or 700), the sealing closure (850) being configured to sealingly close each fill aperture (120) when the sealing closure (850) is mounted on the humidification chamber to resist gas and/or vapour escaping from the one or more fill apertures (120).
Interfaces for positive pressure therapy having various vent designs are disclosed herein. The interfaces include a bias flow vent with design geometries that help reduce and/or minimize draft and noise levels of the fluids exiting the vents. Some of the vent designs include particular vent hole geometries, plenum spaces, diffusers and fibrous media.
Medical humidification apparatus; apparatus for the
diagnosis and treatment of obstructive sleep apnea;
ventilation and non-invasive ventilation apparatus and
instruments; medical apparatus and instruments for positive
airway pressure therapy; humidifiers and meters for positive
airway pressure therapy; breathing masks for use in treating
obstructive sleep apnea; facial masks, oral masks, nasal
masks, nasal cannula, mouthpieces, headgear, all being for
medical purposes; parts and fittings for all the
aforementioned goods.
A respiratory mask system includes a mask interface and a headgear assembly. The headgear assembly is adjustable and comprised of an elastic portion, a non-elastic portion and a restriction mechanism configured to provide a force resisting movement of the non-elastic portion when the elastic portion is extended. There is a support beam coupled to the non-elastic portion and extending along a portion of the headgear that is curved along its longitudinal extent. In this way particular seal modules can be comfortably fitted to a user and any blow off force is mitigated. A particular example of the respiratory mask system includes provision for removable attachment between the seal and a mask frame, the mask frame and a yoke of the headgear; and between a conduit and the mask frame.
Headgear that secures a respiratory interface to the head of a patient. The respiratory interface may be used to treat obstructive respiration diseases or sleep apnoea. The headgear comprises a positioning web having a height and a length that extends at least partly about the head of a user when the headgear is fitted to the user. The positioning web includes at least one pathway for at least one tension line. Furthermore, the positioning web maintains the positioning of the one or more pathways about the head of the user and the positioning web is expandable and contractible between an operative configuration when fitted to the user and an expanded configuration to facilitate donning and doffing of the headgear respectively.
A method for operating a respiratory apparatus comprises presenting on a display screen a display view comprising: a user-selectable first representation of a flow parameter which enables selection from a range of flow parameter values; and a user-selectable second representation of the flow parameter which comprises a single flow parameter set point value; receiving a user selection of the second representation; and responsive to the user selection, controlling the respiratory apparatus to provide a gases flow according to the parameter value corresponding to the second representation.
G16H 40/60 - TIC spécialement adaptées à la gestion ou à l’administration de ressources ou d’établissements de santéTIC spécialement adaptées à la gestion ou au fonctionnement d’équipement ou de dispositifs médicaux pour le fonctionnement d’équipement ou de dispositifs médicaux
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
A61M 16/00 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux
A61M 16/06 - Masques respiratoires ou pour l'anesthésie
A61M 16/10 - Préparation de gaz ou vapeurs à respirer
G16H 20/40 - TIC spécialement adaptées aux thérapies ou aux plans d’amélioration de la santé, p. ex. pour manier les prescriptions, orienter la thérapie ou surveiller l’observance par les patients concernant des thérapies mécaniques, la radiothérapie ou des thérapies invasives, p. ex. la chirurgie, la thérapie laser, la dialyse ou l’acuponcture
A tracheostomy guard couples with a patient interface to reduce the risk of occlusion of the patient interface. The tracheostomy guard has features that may prevent accidental disconnection from the patient interface while enabling suction to be applied to a patient. The tracheostomy guard may prevent patient secretions from being communicated with a caregiver in use.
A gases flow rate sensing system may be configured to operate in at least two different target temperature modes, based upon a measured temperature of the gases flow. In some embodiments, the gases flow sensing system may have a voltage divider containing a thermistor. The gases flow rate may be determined based upon a voltage output indicating an amount of power needed to maintain the thermistor at a target temperature as specified by the target temperature mode, and a measured temperature of the gases flow.
A humidification chamber for a respiratory humidification system, the humidification chamber comprising a humidifying section having an inlet and an outlet, a humidifying element in the humidifying section configured to humidify a flow of gases passing through the flow channel, wherein the flow of gases is brought into proximity with the humidifying element.
Respiratory apparatus and instruments; non-invasive
ventilation apparatus and instruments; medical equipment for
the purpose of delivering humidification therapy; medical
apparatus and equipment for the treatment of respiratory
diseases and conditions; medical respiratory masks; facial
masks, oral masks, nasal masks, nasal cannula, and headgear,
all being for medical purposes; nasal masks for use with
medical respiratory equipment; nasal masks for use in
treating obstructive sleep apnea; parts, fittings and
accessories for all the aforementioned goods.
35.
DEFORMABLE INSERT FOR LOW PRESSURE PATIENT INTERFACE
A patient interface includes a frame, an inflatable seal, and a deformable insert. The frame includes an outer portion, an inner portion, and an opening extending therebetween. The inflatable seal is secured to the inner portion of the frame. The inflatable seal defines an internal volume and has at least one aperture. The deformable insert includes an outer surface, an inner surface and a passageway extending therebetween. The deformable insert is positioned within the internal volume of the seal and aligned with at least a portion of the frame inner portion. The passageway is aligned with the frame opening to define a gas flow path from the frame outer portion to the at least one aperture of the seal.
Condensation or “rain-out” is a problem in medical circuits and previous attempts to manage and/or prevent rain-out have resulted in relatively expensive and/or difficult to manufacture medical circuit components. The subject patent provides an improved medical circuit component for managing rain-out. In particular the component may be an improved breathing tube, or insufflation system limb comprising a helically corrugated tube preferably incorporating a heater wire.
F16L 11/118 - Manches, c.-à-d. tuyaux flexibles en caoutchouc ou en matériaux plastiques flexibles à paroi ondulée avec des agencements pour usages particuliers, p. ex. conducteurs d'électricité
F16L 53/38 - Chauffage par résistance ohmique en utilisant des éléments de chauffage électrique allongés, p. ex. des fils ou des rubans
37.
EXHALED GAS MEASUREMENT COMPENSATION DURING HIGH FLOW RESPIRATORY THERAPY
The present disclosure relates to determining a corrected exhaled gas measurement during high flow respiratory therapy. Measuring exhaled gas concentration during high flow respiratory therapy is difficult and inaccurate due to a phenomenon known as flushing. The high flows delivered to the patient flush the dead space in the conducting airways, which causes a dilution effect that results in underestimated or overestimated exhaled gas measurement depending on the gas composition delivered by the high flow system. This can lead to incorrect clinical measurements and diagnoses. Various algorithms are disclosed herein to account for the dilution effect caused by flushing, allowing for the method of measuring gas concentrations to still be used accurately for clinical measurements.
A method of estimating an off-therapy respiratory parameter of a patient during therapy is provided. The method includes the steps of providing a flow of gases at a plurality of flow rates via a flow generator, the flow rates comprising at least an operating flow rate and one or more intermediate flow rates; receiving flow parameter data indicative or representative of one or more properties the flow of gases provided by the flow generator at each of the plurality of flow rates from one or more sensors; estimating or determining a respiratory parameter of the patient at each of the plurality of flow rates based at least on the data received; and estimating an off-therapy respiratory parameter of the patient based at least on the estimated or determined respiratory parameters at each of the plurality of flow rates.
A respiratory event determination system can have a controller that determines the presence of a respiratory event. The respiratory event can be a mouth puff event. The controller determines the presence as a function of a sub-window of an expiratory window of the breath. The expiratory window extends between a first time t1 and a second time t2. The sub-window is limited to a portion of the expiratory window. The sub-window can extend between a third time t3 and a fourth time ta. The fourth time ta can be before the second time t2.
A headgear for a respiratory mask has first and second straps configured to be connected to each other by first and second buckles. The straps are configured to overlap in a region that contacts the rear of a user's head. The overlapping regions of the first and second straps can be positioned in a bifurcated configuration to improve stability on a user's head. The first and second buckles can feature a glider end through which one of the first and second straps can slide and a strap attachment end to which the other strap is permanently connected. In some embodiments, the first and second buckles have two components that are pivotally connected to allow adjustment of the headgear size whilst in a bifurcated configuration.
Several methods of supporting respiratory function of a patient before, during and/or after a medical procedure are disclosed. In certain arrangements, supporting respiratory function while a patient is under general anaesthesia can include providing a high gas flow a high gas flow that is greater than 15 L/min while the patient is under general anaesthesia. In certain arrangements, a method of providing ventilation while a patient is under general anaesthesia involves providing only a gas flow delivered through a nasal interface that is greater than 15 L/min while the patient is under general anaesthesia
A61M 16/00 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux
A61M 16/01 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux spécialement conçus pour l'anesthésie
Connectors for respiratory assistance systems are disclosed. The connectors include an inspiratory conduit port, an expiratory conduit port, a first interface port, a second interface port, and a body or body portion formed between the inspiratory conduit port, the expiratory conduit port and the first and second interface ports, the body or body portion defining an interior cavity that fluidly couples, at least in part, the inspiratory conduit port and the expiratory conduit port to the first and second interface ports. The first and second interface ports are each fluidly couplable to a patient interface. Preferably, the first interface port is adapted to be coupled to an adult patient interface and the second interface port is adapted to be coupled to a pediatric or neonatal patient interface.
A cushion module for a patient interface for delivering positive pressure respiratory therapy to a user. The cushion module has a seal for forming a seal around the user's mouth and nares and has a housing connected to the seal. The housing and seal form a cavity configured to receive a flow of pressurized gas. The seal has at least one opening to communicate the pressurized gas with the user, an inlet through which the pressurized gas is received into the cavity, an outlet through which gas is exhausted from the cushion module and an exhaust conduit configured to draw gas from the user's nares through at least one exhaust conduit inlet and conduct it to the outlet of the cushion module.
A humidification chamber configured to be used with a breathing circuit assembly. The humidification chamber comprises a main body, a base connected to the main body, a cavity at least partially defined by the body and the base to hold a volume of liquid, an inlet into the cavity, an outlet out of the cavity, and a circuit end cap configured to receive a breathing circuit component of the breathing circuit assembly.
Disclosed is a surgical humidification system, comprising: a humidifier configured to heat and humidify a gases flow to be provided to a surgical cavity to a desired dew point, and a flow generator configured to provide the gases flow at a desired flow rate.
A61M 13/00 - Insufflateurs à fins thérapeutique ou de désinfection
A61B 18/00 - Instruments, dispositifs ou procédés chirurgicaux pour transférer des formes non mécaniques d'énergie vers le corps ou à partir de celui-ci
A respiratory or surgical humidifier having communication capabilities for communicating with other medical devices. The humidifier can obtain updates from the other medical devices and transmit and receive other data using the communication capabilities. The humidifier's operational state can be logged and its health can be assessed by another device. The humidifier's operation can be controlled based on data communicated from other medical devices. Also disclosed are other medical devices for communicating with the humidifier. Also disclosed are methods by which devices of a humidification and ventilation system can authenticate each other.
G16H 40/63 - TIC spécialement adaptées à la gestion ou à l’administration de ressources ou d’établissements de santéTIC spécialement adaptées à la gestion ou au fonctionnement d’équipement ou de dispositifs médicaux pour le fonctionnement d’équipement ou de dispositifs médicaux pour le fonctionnement local
A61M 16/00 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux
A61M 16/06 - Masques respiratoires ou pour l'anesthésie
A61M 16/10 - Préparation de gaz ou vapeurs à respirer
47.
PRESSURE RANGE ADJUSTMENT FOR RESPIRATORY THERAPY DEVICE
An automatic positive airway pressure (AutoPAP) therapy device can be configured such that the minimum and/or maximum pressures deliverable by the device can automatically change. The minimum and/or maximum pressures can change as a function of pressures delivered over the course of the current therapy session and/or over the course of prior therapy sessions. The minimum and/or maximum pressures can also change as a function of the presence, absence, type, severity, or length of sleep disordered breathing events (SDBE) detected by the device over the course of the current therapy session and/or over the course of prior therapy sessions.
A valve unit (10) for a fluid supply chamber (20) of a respiratory support system (100) that provides humidified respiratory gases is provided. The valve unit comprises a first port (11) and a second port (12) and a fluid passageway (14) formed therebetween. The valve unit further comprises a valve (13) arranged in the fluid passageway (14) for controlling the flow of fluid between the first port (11) and second port (12). The valve unit is arranged to seal against an interior surface (21) of the fluid supply chamber (20) proximate the first port (11) and against an exterior surface (22) of the fluid supply chamber (20) proximate the second port (12) when the 10 valve unit (10) is connected to the fluid supply chamber (20).
The present disclosure provides for a flow therapy apparatus that can implement one or more closed loop control systems to control the flow of gases of a flow therapy apparatus. The flow therapy apparatus can monitor blood oxygen saturation (SpO2) of a patient and control the fraction of oxygen delivered to the patient (FdO2). The flow therapy apparatus can automatically adjust the FdO2 in order to achieve a targeted SpO2 value for the patient.
Mask interfaces having mask frames and mask seals are disclosed. Headgear and breathing conduits can be connected to the mask interfaces. The connection between the mask seals and the mask frames can enable movement of the mask seals relative to the mask frames. The relative movement may be at the mounting locations of the mask seals and mask frames.
A patient interface has a single loop headstrap and a mask for covering at least the nostrils of the user. The single loop headstrap extends from the mask at either end. A short length of supple conduit is coupled to the mask by a swivel or ball joint to allow rotation of the conduit relative to the mask through different angles and orientations.
Systems, apparatus, methods, and computer-readable media for collecting, processing, generating, transmitting, receiving and presenting / displaying information regarding medical equipment are provided. More specifically, one or more aspects of the present application relate to respiratory support equipment / devices (also known as breathing assistance equipment / devices) such as interfaces (masks, cannulae, tracheal interfaces), tubes, filters, and other components or devices comprising or comprised in respiratory support equipment / devices; particularly of the replaceable variety (also sometimes referred to as "consumables").
G06F 16/9535 - Adaptation de la recherche basée sur les profils des utilisateurs et la personnalisation
G06Q 20/12 - Architectures de paiement spécialement adaptées aux systèmes de commerce électronique
G16H 40/40 - TIC spécialement adaptées à la gestion ou à l’administration de ressources ou d’établissements de santéTIC spécialement adaptées à la gestion ou au fonctionnement d’équipement ou de dispositifs médicaux pour la gestion d’équipement ou de dispositifs médicaux, p. ex. pour planifier la maintenance ou les mises à jour
H04L 67/00 - Dispositions ou protocoles de réseau pour la prise en charge de services ou d'applications réseau
H04L 67/53 - Services réseau en utilisant des fournisseurs tiers de services
H04W 4/35 - Services spécialement adaptés à des environnements, à des situations ou à des fins spécifiques pour la gestion de biens ou de marchandises
54.
METHODS FOR PROVIDING RESPIRATORY SUPPORT WITH CUFF DEFLATION
A method for providing respiratory support to a patient includes intubating the patient with an invasive patient interface having a sealable member operable to form a sealing engagement with the patient's airway. While the patient is intubated, the sealable member is operated to form a non-sealing arrangement of the invasive patient interface within the patient's airway and a flow of respiratory gas is provided to the patient via the invasive patient interface. This respiratory support is provided during absence of spontaneous breathing.
A61M 16/00 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux
A61M 16/01 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux spécialement conçus pour l'anesthésie
A respiratory mask system includes a headgear that, in use, secures the respiratory mask system to a patient's head. The headgear includes a pair of forehead straps that are coupled together by a forehead coupler to form a closed loop. The forehead coupler is removably connected to a frame of the respiratory mask such that the forehead straps remain in a closed loop. The pair of forehead straps can also be coupled together by positioning a male strap portion within an aperture of a female strap portion. The male strap portion has a free end that is configured to be received into the aperture. The male strap portion includes a plurality of notches that engage the aperture of the female strap portion and provide incremental adjustment. The free ends of the male and female strap portions have fasteners configured to engage the surface of the other strap portion.
An improved system and method of determining a low water and/or water-out condition in a humidifier chamber of a respiratory or surgical humidifier system can use a specific frequency band to detect changes in a temperature of a heater plate. The temperature changes can correlate to the specific heat capacity value of the humidifier chamber. The low water and/or water-out detection process can be performed without having to determine the gases flow rate and/or can be run continuously. A heater plate assembly of the system can include a compliant insulation sheet to improve thermal coupling between the heating element and the top heating plate of the heater plate assembly, thereby improving the low water and/or water-out detection process.
A61M 16/00 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux
A61M 16/10 - Préparation de gaz ou vapeurs à respirer
A61M 16/16 - Dispositifs pour humidifier l'air à respirer
G05B 13/02 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé électriques
G16H 40/67 - TIC spécialement adaptées à la gestion ou à l’administration de ressources ou d’établissements de santéTIC spécialement adaptées à la gestion ou au fonctionnement d’équipement ou de dispositifs médicaux pour le fonctionnement d’équipement ou de dispositifs médicaux pour le fonctionnement à distance
58.
HEADGEAR ASSEMBLIES AND INTERFACE ASSEMBLIES WITH HEADGEAR
A headgear system and/or an interface assembly incorporating a headgear system that, in some configurations, is configured to transform from elasticated or “stretchy” behavior to “inelastic” behavior at least in response to normal or expected forces encountered during the intended therapy. In some configurations, upon fitment to the head of a user, the system automatically adjusts toward or to an appropriate size. A headgear portion or assembly for use in combination with a breathing apparatus in some configurations is at least substantially inelastic and is three dimensional in shape. The headgear portion or assembly can comprise a plastic core and a textile casing. The headgear, or part thereof, may also have integrally moulded labels, connectors, adjustment mechanisms and/or grips.
A tracheostomy guard (10, 30, 40, 50) for a patient interface is provided. The tracheostomy guard (10, 30, 40, 50) comprises a first portion (11) arranged to connect to a patient interface, in use, a second portion (12) attached to the first portion and configured to be in fluid communication with the patient interface and/or the first portion (11), in use. The second portion (12) comprising at least one first member (121) and/or second member (122) forming at least one aperture in fluid communication with the ambient environment, wherein the aperture (13) has a size that is variable in response to a force applied to at least part of the second portion, in use. An assembly (100) comprising the tracheostomy guard, a valve unit, a valve component, and a kit of parts, are also provided.
A patient interface includes a mask body, an elbow, a connector and a conduit. Any one or more of the mask body, the elbow, the connector and the conduit includes a bias flow vent. The bias flow vent is configured to deform with the application of pressure but not fully collapse such that an orifice size defined by the bias flow vent can vary with the application of pressure.
The invention is directed to a method of monitoring oxygen at a patient to determine spontaneous breathing with a patent airway. The method includes the steps of providing a gas flow to a patient's airway, the gas flow including a predetermined fraction of oxygen, monitoring the fraction of oxygen at the patient's airway, generating a waveform representing the fraction of oxygen at the patient's airway, and determining whether the patient is spontaneously breathing with a patent airway based on the waveform.
A nasal interface 2900 has an interface body 2910 with a nasal delivery element 2911. The nasal delivery element 2911 is configured to seal with a naris of a patient. The nasal interface has a gases inlet 2921 for delivery of respiratory gases into the nasal interface. The gases inlet 2921 and the nasal delivery element 2911 are in fluid communication with a gases flow channel 2925 of the interface body 2910 to deliver the respiratory gases from the gases inlet 2921 through the nasal delivery element 2911. The gases inlet 2921 has a portion 2921p that extends externally to the interface body 2910. The portion 2921p is in a fixed position that is offset from a midline plane MP bisecting the nasal interface 2900 and is obliquely angled relative to the midline plane MP to position an opening 2921o of the gases inlet away from the midline plane MP.
A conduit connector assembly is provided for a respiratory therapy apparatus and configured to connect a patient interface to a gas delivery conduit. The assembly comprises: a conduit comprising a first flow port configured to be connected to the patient interface, and a second flow port configured to be connected to the gas delivery conduit, and a supplementary flow port; and a first valve port configured to be closed or opened by a valve flap. The conduit and the valve flap selectively provide an inspiratory flow path from the second flow port of the conduit to the first flow port of the conduit; and an expiratory flow path from the first flow port of the conduit to the supplementary flow port via the first valve port. A supplementary gas flow path is provided between the first and/or second flow ports and the supplementary flow port via a supplementary valve port.
A respiratory mask system is provided comprising a respiratory mask and a head engaging portion, wherein the head engaging portion is configured to couple to the respiratory mask to engage a wearer's head via a disengageable mechanism. The disengageable mechanism may comprise a linking member attached to the head engaging portion, a disengagement member attached to the respiratory mask and configured to receive the linking member, wherein the disengagement member is configured to be moveable between a first position and a second position, a control configured to allow a wearer of the mask to move the disengagement member towards the first position and one or more surfaces defined by the disengagement member and configured to exert a frictional force on the linking member.
A nasal cushion for a respiratory interface has a central portion and left and right wings that extend to respective left and right lateral ends from the central portion. The cushion has an inner cushion wall to contact a patient's face and a non-face contacting outer cushion wall. A connecting wall connects the inner cushion wall and outer cushion wall. The cushion also has a bellows extending in length along the connecting wall and in depth into the cushion at each of the left and right wings of the cushion. Each of the bellows are expandable to increase a spacing between the inner cushion wall and outer cushion wall.
A humidification system for delivering humidified gases to a user can include a heater base, humidification chamber having an inlet, outlet, and associated fluid conduit, and breathing circuit including a supply conduit, inspiratory conduit, and optional expiratory conduit. The humidification system can include various features to help make set-up less difficult and time-consuming. For example, the supply conduit, inspiratory conduit, and optional expiratory conduit can be coupled into a one-piece circuit to aid set-up. Various components can be color-coded and can have corresponding structures to indicate which components should be connected to one another during set-up. Such features can also help make the set-up process more intuitive for an operator, which can reduce the need for specialized training and reduce the number of potential errors.
A mask assembly includes a mask interface and a headgear assembly. The mask interface includes a housing and a seal that seals around a user's nose and/or mouth in use. The headgear assembly secures the mask interface to the user's face in use. The headgear assembly can include a top strap, a rear section, and side arms. The top strap can be manually adjustable. The rear section can be temporarily expanded to allow for donning and/or doffing of the mask assembly. The side arms can be automatically adjustable.
44 - Services médicaux, services vétérinaires, soins d'hygiène et de beauté; services d'agriculture, d'horticulture et de sylviculture.
Produits et services
Medical equipment for the purpose of delivering oxygen and
humidification therapy; respiratory apparatus and
instruments for medical purposes; non-invasive ventilation
apparatus and instruments for medical purposes; breathing
tubes used in the delivery of air and gases to and away from
patients; nasal cannula; cannula for respiratory purposes;
breathing tubes and nasal tubes for medical or surgical use;
tubing connectors for breathing tubes and nasal tubes for
medical or surgical use; nasal interfaces for medical and
surgical purposes; parts and fittings for all the
aforementioned goods. Breathing, respiratory and oxygen therapy services;
anaesthesia therapy services; medical respiratory services
namely, non-invasive respiratory support of spontaneously
breathing patients and provision of high flow respiratory
gases to patients; surgical diagnostic and treatment
services; medical diagnostic and treatment services;
information and advisory services relating to the provision
of breathing, respiratory, anaesthesia and oxygen therapy
services; advisory, consultancy and information services
regarding the diagnosis and treatment of breathing and
respiratory difficulties; health risk assessment surveys;
rental of surgical apparatus; rental of medical apparatus;
advisory, consultancy and information services in relation
to the aforesaid services; and including the provision of
the aforesaid services online via the internet, a website or
other computer networks and/or accessible by mobile phone
and other internet-enabled devices.
This invention relates to a blower for a breathing apparatus. The blower comprising a bottom support with a stub axle, a top support with a stub axle, a motor core comprising a motor stator and rotor, and an impeller coupled to the motor core via a shaft, the shaft is rotatably coupled at a first end to the stub axle on the top support and at a second end via the stub axle on the bottom support.
The invention relates to a respiratory system comprising a first patient interface for delivery of a first flow of gases to a patient, a second patient interface for delivery of a second flow of gases to the patient, and a device and/or sensing arrangement that is configure to facilitate a switching of the system between a first respiratory mode where the device allowing delivery of the first flow of gases to an outlet of the first patient interface when the second patient interface is absent from the patient, and a second respiratory mode where the device reducing or stopping delivery of the first flow of gases to the outlet of the first patient interface when the second patient interface is located together with the first patient interface upon the patient.
A61M 16/06 - Masques respiratoires ou pour l'anesthésie
A61M 16/00 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux
A61M 16/01 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux spécialement conçus pour l'anesthésie
A breathing treatment apparatus delivers breathing gas to a user. The apparatus May be configured to comprise one or more sensors for sensing microbial growth within the apparatus.
A61L 2/24 - Appareils utilisant des opérations programmées ou automatiques
A61L 2/10 - Procédés ou appareils de désinfection ou de stérilisation de matériaux ou d'objets autres que les denrées alimentaires ou les lentilles de contactAccessoires à cet effet utilisant des phénomènes physiques des radiations des ultraviolets
A61M 16/00 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux
A61M 16/16 - Dispositifs pour humidifier l'air à respirer
C12Q 1/04 - Détermination de la présence ou du type de micro-organismeEmploi de milieux sélectifs pour tester des antibiotiques ou des bactéricidesCompositions à cet effet contenant un indicateur chimique
78.
HUMIDIFIED GASES DELIVERY APPARATUS AND METHODS FOR CONTROLLING SAME
The invention relates to a method of determining water level in a humidifier chamber that is part of a humidified gases delivery apparatus and system. The method comprising the steps of delivering power to a heater plate, varying the power delivered to the heater plate, measuring the rate of change of temperature and determining the level of water based on the heating characteristics of the volume of water within the chamber, in particular determining the level of water within the chamber based on the rate of change of temperature and the supplied power.
A61M 16/10 - Préparation de gaz ou vapeurs à respirer
A61M 16/12 - Préparation de gaz ou vapeurs à respirer par mélange de gaz différents
G01F 23/22 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p. ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme en mesurant des variables physiques autres que les dimensions linéaires, la pression ou le poids, selon le niveau à mesurer, p. ex. par la différence de transfert de chaleur de vapeur ou d'eau
(1) Medical apparatus for the diagnosis and treatment of obstructive sleep apnea; non-invasive ventilation apparatus and instruments; medical apparatus and instruments for positive airway pressure therapy; breathing masks for use in treating obstructive sleep apnea; facial masks, oral masks, nasal masks, nasal cannula, mouthpieces, headgear, all being for medical purposes; parts and fittings for all the aforementioned goods.
Medical apparatus for the diagnosis and treatment of obstructive sleep apnea; non-invasive ventilation apparatus and instruments; medical apparatus and instruments for positive airway pressure therapy; breathing masks for use in treating obstructive sleep apnea; facial masks, oral masks, nasal masks, nasal cannula, mouthpieces, headgear, all being for medical purposes; parts and fittings for all the aforementioned goods
A user interface comprising a non-sealing nasal cannula and a mask arranged about the nasal cannula, the mask including a seal configured with a user's face to allow the interface to be pressurised, the cannula configured to deliver breathing gases to the nares of a user at a flow rate exceeding the intended user's peak inspiratory flow requirements so that the mask and the user's pharynx are flushed continuously with fresh breathing gases to reduce dead space.
Medical tubes and methods of manufacturing medical tubes are disclosed, such as in positive airway pressure (PAP), respirator, anaesthesia, ventilator, and insufflation systems. The tube may be a composite structure made of two or more distinct components spirally wound to form an elongate tube. One of the components may be a spirally wound elongate hollow body, and the other component an elongate structural component spirally wound between turns of the spirally wound hollow body. Alternatively, the tube need not be made from distinct components. For instance, an elongate hollow body formed (e.g., extruded) from a single material may be spirally wound to form an elongate tube. The elongate hollow body itself may in transverse cross-section have a thin wall portion and a relatively thicker or more rigid reinforcement portion. The tubes can be incorporated into a variety of medical circuits or have other medical uses.
Disclosed is a headgear for a patient interface, where the headgear includes a first and second lapped panels. The lapped panels define a lapped region in which the first and second panels respectively overlap and underlap each other. The lapped panels also define a non-lapped region in which the first panel is not lapped. At the lapped region, adjacent surfaces of the respective lapped panels are fused together.
A respiratory assistance apparatus has a gases inlet configured to receive a supply of gases, a blower unit configured to generate a pressurised gases stream from the supply of gases; a humidification unit configured to heat and humidify the pressurised gases stream; and a gases outlet for the heated and humidified gases stream. A flow path for the gases stream extends through the respiratory device from the gases inlet through the blower unit and humidification unit to the gases outlet. A sensor assembly is provided in the flow path before the humidification unit. The sensor assembly has an ultrasound gas composition sensor system for sensing one or more gas concentrations within the gases stream.
The present invention provides for an improved method of determining a water out condition in a humidified gases supply apparatus. The method includes a two step process including a primary determination of a water out condition and a secondary determination of a water out condition. This primary determination is made during observation of the normal operation of the apparatus. During the secondary determination the method takes temporary control over the humidifying part of the apparatus. The secondary determination confirms or contradicts the primary determination.
Systems and methods for non-invasive ventilation are provided. The systems may include a gas source that provides breathing gases to a patient through one or more of a primary flow path (PFP) and a flushing flow path (FFP). The system may include a control assembly configured to open and restrict gas flow through the PFP. When the PFP is open, a significant portion of the gas flows through the PFP while the remaining gas flows through the FFP. When the PFP is restricted, a significant portion of the gas flows through the FFP. Increased flow through the FFP may have a high velocity (especially relative to the flow through the PFP). Gas delivered through the FFP may be used to flush dead space. One or both flow paths may contribute to inspiratory positive airway pressure (IPAP), expiratory positive airway pressure (EPAP), and/or positive end expiratory pressure (PEEP).
A nasal cannula arrangement for use as part of systems for delivery respiratory gases to a patient is disclosed. The nasal cannula arrangement includes a manifold part adapted to receive gases from a delivery conduit. The manifold includes one but preferably a pair of prongs extending upward and curving towards the rear of the manifold. The prongs are inserted into the nostrils of the patient and deliver gases to a patient. The prongs have a cut out on the rear side of the prongs. The cut out forms a gases outlet in the prongs and are shaped such that the area of the cut out area is greater than the cross sectional area of the prongs at the entry point to the prongs.
A respiratory assistance apparatus includes a flow generator and a humidifier. The humidifier includes a humidification chamber. The humidification chamber comprises a water tub that is configured to receive a volume of water. A lid is hingedly coupled to the water tub for enclosing a volume contained within the water tub.
A tube winder, tube winder assembly and a humidification assembly for a respiratory assistance system. In some cases, the tube winder has body configured to connect to a single port of the humidification chamber, and an outer side wall substantially surrounding the single port, an outer surface of the outer side wall configured to support a wound tube. In some cases, the body, when connected to the port, is configured to extend away from the port in a direction away from the connection direction between the humidification chamber and a humidification base. In some cases, the tube winder is configured to remain attached to the humidification chamber during connection of the humidification chamber to the humidification base. In some cases, the body has a cover configured to at least partially occlude the opening of the port when the tube winder is connected to the port, the cover having an aperture configured to allow a retainer to pass into the port.
The invention comprises a method of operating a breathing apparatus comprising measuring a baseline breath flow parameter being respiratory rate and/or tidal volume or a parameter derived therefrom, varying the flow rate provided by the breathing apparatus, measuring a current breath flow parameter being respiratory rate and/or tidal volume or a parameter derived therefrom, comparing the baseline and current breath flow parameters, and altering operation of the breathing apparatus based on the comparison. The invention also comprises a breathing apparatus that implements the above method.
A tube 174 for delivery of gases to a patient interface and for treatment of expiratory gases. The tube has an inspiratory conduit 170 for directing a flow of gas toward a patient interface, an expiratory conduit 173 for directing a flow of gas from the patient interface 100 and a filter 140 in fluid communication with, or part of, the expiratory conduit 140. The filter 140 is configured to filter the flow of expiratory gases from the patent interface 100 before passage of the flow of expiratory gases from the patient interface into ambient air.
An electrically conductive plastic (ECP) material can be used to heat water in a reservoir of a respiratory humidifier to encourage heating and/or humidification of gases passing through the respiratory humidifier. The electrically conductive plastic material can at least in part overmould the base and/or walls of the chamber and/or the reservoir of the respiratory humidifier. The reservoir can also partially or fully be formed from the electrically conductive plastic material. Furthermore, the humidification system can be configured to create substantially equal or differential heating of water in the reservoir.
A61M 16/10 - Préparation de gaz ou vapeurs à respirer
A61M 16/00 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux
A61M 16/06 - Masques respiratoires ou pour l'anesthésie
A61M 16/16 - Dispositifs pour humidifier l'air à respirer
B01F 23/23 - Mélange de gaz avec des liquides en introduisant des gaz dans des milieux liquides, p. ex. pour produire des liquides aérés
F24F 3/14 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par humidificationSystèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification
A patient interface comprises a blower, a cushion for contacting a user's face, and a mask body and/or a frame for supporting the cushion on a user's face. The cushion and/or the mask body or frame define an interior space for receiving a flow of gases from the blower. The blower is mounted to the mask body or frame so that the blower is at least partially within the mask body or frame. The blower substantially separates a high pressure side of the mask body or frame from a low pressure side of the mask body or frame and/or the mask body or frame is substantially without a wall between the blower and the interior space.
An interface for positive pressure therapy includes a mask assembly, a headgear assembly and a connection port assembly. The mask assembly comprises a seal member that has an upper portion movably connected to an integrated lower portion, wherein the upper portion rolls during hinging movement of the upper portion relative to the lower portion. The headgear assembly allows connection to the mask assembly in a direction substantially normal to a direction of strap tension. The connection port assembly includes a swivel elbow with a valve member that controls flow through a port that opens toward the user.
In learning to use a respiratory apparatus, operators need to be able to train in a safe and practical way. This disclosure includes systems and methods on how to train operators through the use of simulation, which does not require the respiratory apparatus to be used by a live patient or real oxygen source to be connected to the respiratory apparatus. The simulation of a patient thus can provide a safe training system in a constrained environment to train operators without the need to train on actual patients or use O2. This allows operators to train in a safe manner by avoiding injury to patients or potential mishaps with O2 and its storage.
G09B 23/28 - Modèles à usage scientifique, médical ou mathématique, p. ex. dispositif en vraie grandeur pour la démonstration pour la médecine
A61M 16/00 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p. ex. ventilateursTubes trachéaux
G09B 5/02 - Matériel à but éducatif à commande électrique avec présentation visuelle du sujet à étudier, p. ex. en utilisant une bande filmée
G16H 20/40 - TIC spécialement adaptées aux thérapies ou aux plans d’amélioration de la santé, p. ex. pour manier les prescriptions, orienter la thérapie ou surveiller l’observance par les patients concernant des thérapies mécaniques, la radiothérapie ou des thérapies invasives, p. ex. la chirurgie, la thérapie laser, la dialyse ou l’acuponcture
G16H 50/50 - TIC spécialement adaptées au diagnostic médical, à la simulation médicale ou à l’extraction de données médicalesTIC spécialement adaptées à la détection, au suivi ou à la modélisation d’épidémies ou de pandémies pour la simulation ou la modélisation des troubles médicaux
There is provided a respiratory gas delivery and sampling system, a gas sampling system, a gas sampling interface and a gas sampling tip that may be used to sample exhaled and/or expired gases from a patient, particularly from a patient who is apnoeic and/or who is receiving high flow respiratory therapy. The gas sampling system comprises a respiratory gas monitor in fluid communication with the gas sampling interface, which comprises the gas sampling tip of the invention. The gas sampling interface comprises a gas sampling conduit and the gas sampling tip is located at a free end of the conduit. The gas sampling interface may be configured to allow the gas sampling tip to be selectively positioned at or in the mouth or a nare of the patient's nose.
A respiratory apparatus that is configured to provide a flow of gases to a user for respiratory therapy. A flow generator is operable to generate a flow of gases. A controller is operable to control one or more properties of the flow of gases provided to the user by controlling a motor speed of the flow generator. The controller is configured to receive one or more input therapy settings that represents one or more properties desired for the generated flow of gases during a therapy session. The controller predicts if a steady-state temperature of the apparatus will exceed a high-temperature-condition threshold, based at least partly on input therapy setting(s) and a heat model of the apparatus. The controller may generate an alarm and/or initiate an alarm response counteraction control measure in response to the prediction to reduce the risk of the apparatus exceeding the high-temperature-condition threshold.
Embodiments of the invention are directed to methods of characterising flow paths within a patient's respiratory airways. A method of characterising flow paths comprises receiving a first input relating to a flow of gases provided to the patient, receiving a second input relating to a flow of gases at the mouth or nose of the patient, and characterising one or more flow paths of delivered gases within the respiratory airways of the patient based on the first input and/or the second input.
