[go: up one dir, main page]

WO2015165845A1 - Chambre d'humidification pour l'humidification d'un gaz respirable - Google Patents

Chambre d'humidification pour l'humidification d'un gaz respirable Download PDF

Info

Publication number
WO2015165845A1
WO2015165845A1 PCT/EP2015/059064 EP2015059064W WO2015165845A1 WO 2015165845 A1 WO2015165845 A1 WO 2015165845A1 EP 2015059064 W EP2015059064 W EP 2015059064W WO 2015165845 A1 WO2015165845 A1 WO 2015165845A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
base
clip
clamping surface
tub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2015/059064
Other languages
English (en)
Inventor
Daniel Heine
Martin Busch
Julia EBERHARDT
Philipp KAPPERT
Bernd RESLO
Markus ROTHFUSS
Norbert RUPPRECHT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resmed Humidification Technologies GmbH
Original Assignee
Resmed Humidification Technologies GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Resmed Humidification Technologies GmbH filed Critical Resmed Humidification Technologies GmbH
Publication of WO2015165845A1 publication Critical patent/WO2015165845A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A61M16/109—Preparation of respiratory gases or vapours by influencing the temperature the humidifying liquid or the beneficial agent
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • A61M16/0069—Blowers or centrifugal pumps the speed thereof being controlled by respiratory parameters, e.g. by inhalation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0683—Holding devices therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/105—Filters
    • A61M16/1055—Filters bacterial
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/105—Filters
    • A61M16/106—Filters in a path
    • A61M16/107—Filters in a path in the inspiratory path
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A61M16/161—Devices to humidify the respiration air with means for measuring the humidity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0208—Oxygen
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/21—General characteristics of the apparatus insensitive to tilting or inclination, e.g. spill-over prevention
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3365—Rotational speed
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/42—Reducing noise
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/75—General characteristics of the apparatus with filters
    • A61M2205/7545—General characteristics of the apparatus with filters for solid matter, e.g. microaggregates

Definitions

  • the present technology relates to one or more of the diagnosis, treatment and amelioration of respiratory disorders, and to procedures to prevent respiratory disorders.
  • the present technology relates to medical devices, and their use for treating respiratory disorders and for preventing respiratory disorders.
  • the present invention also relates to humidifiers, particularly to a humidifying chamber for humidifying breathable gas and the assembly and/or sealing thereof.
  • the respiratory system of the body facilitates gas exchange.
  • the nose and mouth form the entrance to the airways of a patient.
  • the airways include a series of branching tubes, which become narrower, shorter and more numerous as they penetrate deeper into the lung.
  • the prime function of the lung is gas exchange, allowing oxygen to move from the air into the venous blood and carbon dioxide to move out.
  • the trachea divides into right and left main bronchi, which further divide eventually into terminal bronchioles.
  • the bronchi make up the conducting airways, and do not take part in gas exchange. Further divisions of the airways lead to the respiratory bronchioles, and eventually to the alveoli.
  • the alveolated region of the lung is where the gas exchange takes place, and is referred to as the respiratory zone. See West. Respirator ⁇ ' Physiology- the essentials.
  • OSA Obstructive Sleep Apnea
  • SDB is characterized by occlusion or obstruction of the upper air passage during sleep. It results from a combination of an abnormally small upper airway and the normal loss of muscle tone in the region of the tongue, soft palate and posterior oropharyngeal wall during sleep.
  • the condition causes the affected patient to stop breathing for periods l typically of 30 to 120 seconds duration, sometimes 200 to 300 times per night. It often causes excessive daytime somnolence, and it may cause cardiovascular disease and brain damage.
  • the syndrome is a common disorder, particularly in middle aged overweight males, although a person affected may have no awareness of the problem. See US Patent 4,944,310 (Sullivan).
  • Cheyne-Stokes Respiration is a disorder of a patient's respiratory controller in which there arc rhythmic alternating periods of waxing and waning ventilation, causing repetitive de-oxygenation and re-oxygenation of the arterial blood. It is possible that CSR is harmful because of the repetitive hypoxia. In some patients CSR is associated with repetitive arousal from sleep, which causes severe sleep disruption, increased sympathetic activity, and increased afterload. See US Patent 6,532,959 (Berthon-Jones).
  • Obesity Hyperventilation Syndrome is defined as the combination of severe obesity and awake chronic hypercapnia, in the absence of other known causes for hypoventilation. Symptoms include dyspnea, morning headache and excessive daytime sleepiness.
  • COPD Chronic Obstructive Pulmonary Disease
  • COPD encompasses any of a group of lower airway diseases that have certain characteristics in common. These include increased resistance to air movement, extended expiratory phase of respiration, and loss of the normal elasticity of the lung. Examples of COPD are emphysema and chronic bronchitis. COPD is caused by chronic tobacco smoking (primary risk factor), occupational exposures, air pollution and genetic factors. Symptoms include: dyspnea on exertion, chronic cough and sputum production.
  • Neuromuscular Disease is a broad term that encompasses many diseases and ailments that impair the functioning of the muscles either directly via intrinsic muscle pathology, or indirectly via nerve pathology.
  • Some NMD patients are characterised by progressive muscular impairment leading to loss of ambulation, being wheelchair-bound, swallowing difficulties, respiratory muscle weakness and, eventually, death from respiratory failure.
  • Neuromuscular disorders can be divided into rapidly progressive and slowly progressive: (i) Rapidly progressive disorders: Characterised by muscle impairment, that worsens over months and results in death within a few years (e.g.
  • ALS Amyotrophic lateral sclerosis
  • DMD Duchenne muscular dystrophy
  • Variable or slowly progressive disorders Characterised by muscle impairment that worsens over years and only mildly reduces life expectancy (e.g. Limb girdle, Facioscapulohumeral and Myotonic muscular dystrophy).
  • Symptoms of respiratory failure in NMD include: increasing generalised weakness, dysphagia, dyspnea on exertion and at rest, fatigue, sleepiness, morning headache, and difficulties with concentration and mood changes.
  • Chest wall disorders are a group of thoracic deformities that result in inefficient coupling between the respiratory muscles and the thoracic cage.
  • the disorders are usually characterised by a restrictive defect and share the potential of long term hypercapnic respiratory failure.
  • Scoliosis and/or kyphoscoliosis may cause severe respiratory failure.
  • Symptoms of respiratory failure include: dyspnea on exertion, peripheral oedema, orthopnea, repeated chest infections, morning headaches, fatigue, poor sleep quality and loss of appetite.
  • CPAP Continuous Positive Airway Pressure
  • OSA Obstructive Sleep Apnea
  • Non-invasive ventilation provides ventilator support to a patient through the upper airways to assist the patient in taking a full breath and/or maintain adequate oxygen levels in the body.
  • the ventilator support is provided via a patient interface.
  • NIV has been used to treat OHS, COPD, MD and Chest Wall disorders.
  • Invasive ventilation provides ventilatory support to patients that are no longer able to effectively breathe themselves and is provided using a tracheostomy tube.
  • a patient interface may be used to interface respiratory equipment to its user, for example by providing a flow of air.
  • the flow of air may be provided via a mask to the nose and/or mouth, or via a tracheostomy tube to the trachea of the user.
  • the patient interface may form a seal, e.g. with a face region of the patient, to facilitate the delivery of air at a pressure at sufficient variance with ambient pressure to effect therapy, e.g. a positive pressure of about 10cmH2O.
  • the patient interface may not include a seal sufficient to facilitate delivery to the airways of a supply of air at a positive pressure of about 10cmH2O.
  • Some masks suffer from being one or more of obtrusive, aesthetically undesirable, costly, poorly fitting, difficult to use, and uncomfortable especially when worn for long periods of time or when a patient is unfamiliar with a system.
  • Masks designed solely for aviators as part of personal protection equipment or for the administration of anaesthetics may be tolerable for their original application, but nevertheless be undesirably uncomfortable to be worn for extended periods, for example, while sleeping or throughout the day.
  • the air at positive pressure is typically supplied to the airway of a patient by a Respiratory pressure therapy (RPT) device.
  • RPT device may include a positive airway pressure (PAP) device, a ventilator, a flow generator or a high flow therapy device.
  • PAP positive airway pressure
  • RPT devices typically comprise a pressure generator, such as a motor-driven blower or a compressed gas reservoir, and are configured to supply a flow of air to the airway of a patient. In some cases, the flow of air may be supplied to the airway of the patient at positive pressure.
  • the outlet of the RPT device may be connected via an air delivery circuit to a patient interface as described above.
  • a medical humidifier may be small for bedside placement, and may be configured to humidify and/or heat the flow of air delivered to the patient without humidifying and/or heating the patient's surroundings.
  • Room-based systems e.g. a sauna, an air conditioner, an evaporative cooler
  • Respiratory humidifiers are available in many forms and may be a
  • a standalone device that is coupled to a RPT device via an air conduit, is integrated with the RPT device or configured to be directly coupled to the relevant RPT device.
  • known passive humidifiers can provide some relief
  • a heated humidifier may be used to provide sufficient humidity and temperature to the air so that the patient will be comfortable.
  • a non-heated or heated air circuit is generally used to deliver the humidified air from the humidifier to the patient interface.
  • WO 2012065999 Al discloses a humidifier chamber with a chamber bottom mounted to a humidifier chamber component.
  • the present technology is directed towards providing medical devices used in the diagnosis, amelioration, treatment, or prevention of respiratory disorders having one or more of improved comfort, cost, efficacy, ease of use and manufacturability .
  • a first aspect of the present technology relates to apparatus and/or method used in the amelioration of treatment or prevention of a respiratory disorder.
  • One form of the present technology comprises a humidifying chamber for humidifying breathable gas with a chamber top and a tub base and at least one releasable clip for clamping chamber top and tub base to form an assembled container adapted to hold a supply of liquid.
  • Another aspect of one form of the present technology is related to a chamber top and a tub base being sealed via a mechanism being easy to operate by users. Preferably, being easy to operate without requiring the application of significant levels of manual forces for scaling of the parts forming the humidifying chamber. In other words, it is one aspect to provide a device which can be assembled using lower manual forces.
  • Another aspect of one form of the disclosed technology relates to a mechanism avoiding unintentional disassembly during use.
  • the disclosed technology could also be described by one or several of the following aspects:
  • portions of the aspects may form sub-aspects of the present technology.
  • various ones of the sub-aspects and/or aspects may be combined in various manners and also constitute additional aspects or sub-aspects of the present technology.
  • FIG. 1 shows a system in accordance with the present technology.
  • a patient 1000 wearing a patient interface 3000 receives a supply of air at positive pressure from a RPT device 4000. Air from the RPT device is humidified in a humidifier 5000. and passes along an air circuit 4170 to the patient 1000.
  • Fig. 2 shows an overview of a human respiratory system including the nasal and oral cavities, the larynx, vocal folds, oesophagus, trachea, bronchus, lung, alveolar sacs, heart and diaphragm.
  • FIG. 3 shows a patient interface in the form of a nasal mask in accordance with one form of the present technology.
  • FIG. 4a shows a RPT device in accordance with one form of the present technology.
  • Fig. 4b shows a schematic diagram of the pneumatic path of a RPT device in accordance with one form of the present technology. The directions of upstream and downstream are indicated.
  • FIGs. 5a and 5b show perspective views of a humidifier 5000 and of a humidifier module 5100 in accordance with one form of the present technology, respectively.
  • Fig. 6a shows an exploded view of a humidifying chamber 5200 in accordance with one form of the present technology.
  • FIGs. 6b to 6d show different perspective views of a chamber top 5210.
  • Fig. 6e is an enlarged view of a part of chamber top 5210 depicted in Fig.
  • FIGs. 6f and 6g are enlarged views of sections of the chamber flange 5216 viewed generally in the radial direction R, as also indicated in Fig. 1 Oe.
  • the peripheral wall of chamber top 5210 to which the chamber flange 5216 is attached to, is here not shown.
  • Figs. 7a and 7b show (part of) tub base 5220 of Fig. 6a viewed at an angle from above (Fig. 7a) and below (7b).
  • FIGs. 8a and 8b depict a clip 5250 in accordance with one form of the present technology.
  • FIG. 9 shows seal 5260 of Fig. 6a in accordance with one form of the present technology.
  • FIG. 10a to Fig. 10c show different perspective views of chamber 5200 in an angle from above.
  • Fig. lOd depicts chamber 1 viewed from an angle from below.
  • Figs. lOe and lOf depict, enlarged perspective views of the assembly viewed at an angle from above (Fig. lOe) and from below (Fig. lOf).
  • FIGs. 11a and 1 lb are perspective views of a chamber 5200 in accordance with one form of the present technology.
  • Fig. 12 shows the tub base 5220 of Fig. 1 lb in a perspective view.
  • FIGS. 13a and 13b are perspective views of chamber top 5210 depicted in
  • FIGs. 14a to 14c show different concepts of guiding a humidifying chamber in a humidifier in accordance with forms of the present technology.
  • the present technology comprises apparatus for treating a respiratory disorder.
  • the apparatus may comprise a flow generator or blower for supplying pressurised respirator ⁇ ' gas, such as air. to the patient 1000 via an air delivery tube leading to a patient interface 3000.
  • a non-invasive patient interface 3000 in accordance with one aspect of the present technology comprises the following functional aspects: a seal-forming structure 3100, a plenum chamber 3200, a positioning and stabilising structure 3300 and one form of connection port 3600 for connection to air circuit 4170 (see Fig. 1. 3).
  • a functional aspect may be provided by one or more physical components.
  • one physical component may provide one or more functional aspects.
  • the seal-forming structure 3100 is arranged to surround an entrance to the airways of the patient so as to facilitate the supply of air at positive pressure to the airways.
  • the patient interface 3000 may include one or more of the following
  • a forehead support 3700 that assists with supporting the patient interface on the face
  • a vent 3400 constructed and arranged to allow for the washout of exhaled carbon dioxide
  • an anti-asphyxia valve to allow a patient 1000 to receive fresh air into the patient interface 3000 if required
  • a decoupling structure such as a swivel or a ball and socket to allow movement of the patient interface relative to the air circuit
  • one or more ports to allow access to the volume within the plenum chamber.
  • this allows a clinician to supply supplemental oxygen.
  • this allows for the direct measurement of a property of gases within the plenum chamber, such as the pressure.
  • An exemplary RPT device has an external housing 4010, formed in two parts, an upper portion 4012 and a lower portion 4014. Furthermore, the external housing 4010 may include one or more panel(s) 4015.
  • the RPT device 4000 may comprise a chassis 4016 that supports one or more internal components of the RPT device 4000. In one form a pneumatic block 4020 is supported by, or formed as part, of the chassis 4016.
  • the RPT device 4000 may include a handle 4018.
  • the pneumatic path of the RPT device 4000 may comprise an inlet, air filter 4112, an inlet muffler 4122, a controllable pressure device 4140 capable of supplying air at positive pressure (e.g., a blower 4142). and an outlet muffler 4124.
  • One or more transducers 4270 such as pressure sensors, flow sensors, motor speed transducers, temperature sensors and humidity sensors may be included in the pneumatic path.
  • a pneumatic block 4020 houses at least the controllable pressure device
  • the pneumatic block may comprise a portion of the pneumatic path that is located within the external housing 4010.
  • the RPT device 4000 may have an electrical power supply 4210, one or more input devices 4220. a central controller, a therapy device controller, a therapy device, one or more protection circuits, memory, transducers 4270, data communication interface and one or more output devices. Electrical components 4200 may be mounted on a single Printed Circuit Board Assembly (PCBA) 4202. In an alternative form, the RPT device 4000 may include more than one PCBA 4202.
  • PCBA Printed Circuit Board Assembly
  • a pressure generator 4140 for producing a flow, or a supply, of air at positive pressure is a controllable blower 4142.
  • the blower 4142 may include a brushless DC motor 4144 with one or more impellers housed in a volute.
  • the blower may be preferably capable of delivering a supply of air, for example at a rate of up to about 120 litres/minute, at a positive pressure in a range from about 4 cmH20 to about 20 cmH20, or in other forms up to about 30 cmH2G.
  • the blower may be as described in any one of the following patents or patent applications the contents of which are incorporated herein in their entirety: U.S. patent number 7,866,944; U.S. patent number 8,638,014; U.S. Patent number 8,636,479; and PCT patent application publication number WO 2 13/020167.
  • the central controller of the RPT device 4000 may be programmed to execute one or more algorithm modules, including a pre-processing module, a therapy engine module, a pressure control module, and further a fault condition module.
  • algorithm modules including a pre-processing module, a therapy engine module, a pressure control module, and further a fault condition module.
  • An RPT device may comprise one or more of the following components in an integral unit.
  • one or more of the following components may be located as respective separate units:
  • One or more air filter 4110 such as an inlet air filter 4112 located at the beginning of the pneumatic path upstream of a pressure generator 4140 and/or an outlet air filter 41 14, for example an antibacterial filter, located between an outlet, of the pneumatic block 4020 and a patient interface 3000. See Fig. 4b.
  • One or more mufflers 4120 such as an inlet muffler 4122 located in the pneumatic path upstream of a pressure generator 4140. and/or an outlet muffler 4124 located in the pneumatic path between the pressure generator 4140 and a patient interface 3000. See Fig. 4b.
  • An anti-spill back valve may be located between the humidifier 5000 and the pneumatic block 4020.
  • the anti-spill back valve is constructed and arranged to reduce the risk that water will flow upstream from the humidifier 5000, for example to the motor 4144.
  • Supplemental oxygen 4180 may be delivered to one or more points in the pneumatic path, such as upstream of the pneumatic block 4020, to the air circuit 4170 and/or to the patient interface 3000.
  • a humidifier 5000 comprising a water reservoir or humidification chamber 5200 and received in a humidification module 5100 comprising a heating plate 5120.
  • FIG. 5a depicts a humidifier 5000 comprising a humidification module
  • the humidification module 5100 may comprise equipment interfaces 5150a, 5150b and 5150c for connecting to additional equipment, electrical interfaces 5152 and/or optical interface 5156 as further explained in WO2012/065999 Al the content of which is incorporated herein by reference.
  • the disclosed humidifier 5000 may comprise a humidification module 5100 adapted to receive a humidifying chamber 5200.
  • the humidifier 5000 may comprise two receiving sections 5160. preferably located adjacent the heating plate 5120. adapted to receive base mechanical guides 5240 of tub base 5220. preferably so as to hold chamber 5200 on heating plate 5120.
  • Humidifier 5000 may also comprise lateral guiding wall portions 5165 along which, according to optional aspects of the technology, base mechanical guides 5215 of chamber top 5210 may be guided.
  • Fig. 6a depicts an exploded view of humidifying chamber 5200 comprising chamber top or upper part 5210 and tub base or lower part 5220.
  • Tub base 5220 is located below chamber top 5210.
  • a seal 5260 preferably being received on the inner side wall of tub base 5220.
  • the lower surface of chamber top 5210 may press against the upper surface of seal 5260 thereby pressing seal 5260.
  • the seal 5260 is pressed, on a sealing seat, the seat preferably being located at the radius of transition 5227 provided on tub base 5220.
  • Tub base 5220 may comprise a cut out or groove 5228 into which a protrusion 5219 (Fig. 6d) of chamber top 5210 may be inserted. This may assist positioning of chamber top with relation to chamber base and/or contribute to the application of clamping and sealing forces along the seal.
  • Chamber top 5210 and tub base 5220 when assembled and clamped and held together by clip 5250 form an assembled container adapted to hold a supply of liquid.
  • the water level in such container when filled may be above a chamber clamping surface 5216 of the chamber top 5210 and a base clamping surface 5226 of the tub base 5220 which are sealingly connected.
  • Clip 5250 may be configured as a releasable clip being releasably connected to chamber 5200, here to respective portions 5216, 5226 which may be configured as laterally protruding flange portions.
  • Chamber top 5210 and tub base 5220 may form at least a portion of the humidifying chamber 5200.
  • releasable clip 5250 may clamp chamber top 5210 and tub base 5220 along a portion of their perimeters.
  • FIGs. 6b to 6d depict different views of chamber top 5210. Chamber top
  • Chamber top 5210 may be made of a resin material.
  • Chamber top 5210 may be made of a transparent and/or translucent material. In some arrangements at least 50%, preferably at least 70%, more preferably more than 80% and most preferably at least 90% of the volume of the humidifying chamber, preferably of the fluid, may be provided in chamber top 5210.
  • the humidifying liquid is stored in and predominantly above tub base 5220 inside chamber top 5210, preferably made of a transparent material.
  • a substantial part of tub base 5220, preferably the whole tub base is made of a heat conductive material, e.g., a metal material.
  • the combination of a tub base 5220 made of metal material and a separate chamber top 5210 made of resin material may be particularly suitable for sterilization at higher temperatures.
  • the tub base 5220 may form a larger portion of the assembled container being a cup-like shape with an upper base clamping surface 5226.
  • the tub base may form at least 30%, preferably at least 50%, more preferably more than 60% and most preferably at least 75% of the volume of the humidifying chamber, preferably of the fluid, which may be provided in the tub base.
  • the water level in the container when filled may be below the chamber clamping surface 5216.
  • the lower side walls of the tub base 5220 may comprise base mechanical guides 5240 adapted to guide the chamber 5200 or the assembled container into or within humidifier 5000. These mechanical guides may be located distant from the base clamping surface.
  • the Chamber 5200 may be adapted to be connected to a path of breathing gas to be humidified.
  • chamber 5200 may be adapted to be connected to an air delivery tube 4170 and/or to a RPT device 4000.
  • Chamber 5200 may comprise at least one gas inlet 5212 and/or at least one gas outlet 5214 for connection to the path of breathing gas.
  • the at least one gas inlet 5212 and/or at least one gas outlet 5214 are preferably located in the chamber top 5210.
  • Chamber 5200 also may comprise a probe connector 5217 adapted to receive a plug-in probe and/or a Luer-connector 5218.
  • Chamber top 5210 may comprise a chamber clamping surface 5216, here configured as a chamber flange.
  • the chamber clamping surface 5216 in the form of a chamber flange may comprise a chamber rim portion 5216-1 which may be interrupted by chamber receiving portions 5234- 1.
  • Chamber receiving portions 5234- 1 may be configured as recesses.
  • the protruding chamber flange 5216 comprises two chamber receiving portions 5234-1.
  • Chamber rim portion 5216-1 may be obtained by recessing a portion of the chamber flange 5216 to form a chamber recess portion 5216-2. as depicted in Figs. 6b to 6c.
  • chamber flange 5216 protruding from the outer surface of the chamber top 5210 may exhibit a recessed shape including chamber recess portion 5216-2 and the chamber rim portions 5216-1.
  • the chamber rim portions 5216-1 form the outer limit of the chamber recess portion 5216-2 extending between the chamber rim portion 5216-1 and the outer surface of the chamber top 5210.
  • a position marker M l marking a first position PI as will be further explained below.
  • Fig. 6e depicts an enlarged view of the chamber clamping surface or chamber flange 5216 of the chamber top 5210.
  • Arrow D2 depicts the direction along the perimeter of chamber top 5210 which herein may also be referred to as circumferential or tangential direction.
  • clip 5250 is adapted to slide along perimeter D2.
  • clip 5250 is adapted to clamp chamber top 5210 and tub base 5220 along a portion of the perimeter of chamber top 5210 and/or tub base 5220.
  • Arrow D l designates a first direction being a substantial radial direction R of chamber top 5210.
  • First direction Dl is preferably generally perpendicular to second direction D2 being substantially parallel to perimeter C.
  • humidifying chamber 5200 is depicted to have a curved, preferably round and more preferably circular cross-section, other cross sectional shapes may be applied.
  • Direction Dl may thus also or alternatively be referred to as being directed from the outside to the inside of the chamber and direction D2 may be referred to as directed along the outside of the chamber.
  • Figs. 6e to 6g depict one chamber receiving portion 5234- 1 being recessed compared to adjacent (here) right portion of the chamber flange 5216 and compared to adjacent (here) left chamber rim portion 5216- 1.
  • the right portion of the chamber flange 5216 may be configured as a chamber mechanical guide 5215.
  • Chamber receiving portion 5234- 1 may be configured as defining an engaging position PI into which a portion of the clip 5250 may be inserted by radially moving the clip 5250 in the direction R towards chamber top 5210.
  • a chamber retaining portion 5234-2 may be adapted to retain a first protrusion 5252 (Fig.
  • the chamber retaining portion 5234-2 may be configured as an undercut portion or as a groove or recess.
  • the chamber top 5210, preferably the chamber clamping surface(s) 5216 may also comprise a section of increased or of increasing thickness 5234-3 which is here located in and forms part of the chamber retaining portion 5234-2.
  • the section of increasing thickness 5234-3 is located between the chamber receiving portion 5234-1 defining the first or engaging position PI and the second position P2 which constitutes a final position of the clamp and/or clip vis-a-vis the chamber top 5210 and the tub base 5220 when the chamber top and tub base are sealingly clamped.
  • the section of increasing thickness 5234-3 may also include an inclined surface on the chamber recess portion 5216-2 between the first position PI and the second position P2.
  • the section of increasing thickness 5234-3 may be inclined relative to the chamber clamping section at the second position P2 and/or to the first receiving portion 5234-1 at the first position PI .
  • the surface of the receiving portion 5234-1 at the first position PI may be parallel to the chamber clamping surface at the second position P2.
  • the section of increasing thickness 5234-3 offsets the surfaces at the first and second position PI , P2, preferably in an axial direction D3 of the chamber top.
  • Direction D3 may also be generally parallel to the longitudinal axis of the assembled container or chamber 5200.
  • Direction D3 may be generally perpendicular to directions D l and D2.
  • the thickness in the direction D3 of the chamber clamping surface and the chamber flange 5216 may physically increase and/or the distance in the direction D3 between the chamber clamping surface 5216 vis-a-vis an opposing base clamping surface 5226. e.g., on the tub base, may increase. Also, the level of the chamber clamping surface 5216 may change vis-a-vis other portions of the path of clip 5250.
  • the thickness in the direction D3 of only one or of both of the chamber flange 5210 and the tub flange 5220 may vary. All this may be understood as encompassed by reference to an increased thickness.
  • This section of increasing thickness 5234-3 may be a transitional section. The thickness may be increased compared to the thickness of chamber receiving portion 5234- 1 .
  • chamber receiving portion 5234- 1. chamber retaining portion 5234-2 and/or section of increasing thickness 5234-3 may be configured as recessed portions in the chamber flange 5216 (cf. Fig. 6e).
  • Chamber receiving portion 5234- 1. preferably the recessed portion thereof, may comprise a chamfered edge preferably facilitating insertion of the clip in the first direction D l .
  • Fig. 7a and Fig. 7b show the tub base 5220.
  • Tub base 5220 is preferably made of a heat conductive material.
  • Tub base 5220 may comprise a bottom portion 5222 which may be substantially flat.
  • tub base 5220 may comprise a side portion 5224 extending from bottom portion 5222, preferably substantially perpendicular.
  • a groove or cut out 5228 may be located in side portion 5224. Although only one cut out 5228 is shown, a multitude of cut outs 5228 also having different shapes than the elongate shape shown in Fig. 7a may be provided. Cut out 5228 may be adapted to be engaged with the protrusions 5219 of chamber top 5210. Protrusion 5219 and groove or cut out 5228 are preferably located opposite of clip 5250 in the assembled state.
  • Tub base 5220 may comprise base mechanical guides 5240 adapted to guide the chamber 5200 or the assembled container into or within humidifier 5000.
  • the tub base 5220 comprises two base mechanical guides 5240 configured as laterally extending wing portions in Figs. 7a and 7b, which may be adapted to be inserted into receiving sections 5160 depicted in Fig. 5b.
  • Base mechanical guides 5240 may be integrally formed with tub base 5220.
  • a substantially upwardly extending wall portion may comprise a preferably inclined upper surface 5240-1 which may be adapted to be resiliently received in receiving section 5160 so as to hold the assembled container or chamber 5200 in the humidification module 51 0.
  • Tub base 5220 may comprise a sealing seat which may be located at side wall 5224. preferably at a distance from both the bottom portion 5222 and a base clamping surface 5226.
  • the tub base 5220 may comprise a base clamping surface 5226. shown in the form of a base flange 5226.
  • Base flange or clamping surface 5226 may comprise a base rim or bead portion 5226- 1 which may extend downwardly from base flange 5226.
  • Base rim portion 5226-1 may be interrupted by recesses which may be configured as a base receiving portion 5242- 1 for clip 5250.
  • tub base 5220 comprises three base receiving portions 5242-1.
  • Base rim or bead portion 5226- 1 may be formed by metal forming, preferably by plastic deformation of base flange 5226.
  • Base rim portion 5226-1 may also be manufactured by recessing the lower side of the base flange 5226 so as to form base retaining or undercut portions 5242-2 further explained below.
  • the base flange or clamping surface 5226 may comprise at least one section of increasing base thickness (not shown). At least one section of base increasing thickness may he configured and arranged in the same manner at the base clamping surface / base flange 5226 as at the section of increasing flange thickness of the chamber clamping surface / chamber flange 5216 as described above.
  • Clip 5250 may be adapted to move or slide along the section(s) of increasing thickness when being moved from the first position P I into the second position P2.
  • Chamber rim portion 5216-1 of chamber top 5210 as well as base rim portion 5226- 1 of tub base 5220 extend or protrude, preferably generally perpendicular, from the surface of the respective chamber flange 5216 and base flange 5226 being opposite the interfacing surfaces of both flanges 5216, 5226.
  • Chamber rim portion 5216-1 and base rim portion 5226- 1 may substantially extend along the flange(s) at least in the portions where clip 5250 will be located after assembly.
  • Chamber rim portion 5216-1 and base rim portion 5226-1 may be produced by recessing the chamber flange 5216 and /or base flange 5226 thereby forming chamber retaining portion 5234-2 and base retaining portion 5242-2 respectively, preferably adjacent the chamber receiving portion 5234-1 and the base receiving portion 5242-1 respectively.
  • Figs. 8a and 8b are perspective views of clip 5250.
  • Clip 5250 may have a generally longitudinal shape.
  • Clip 5250 may have a longitudinal axis substantially parallel to the extension of the chamber flange 5216 and/or base flange 5226 after assembly.
  • Clip 5250 may have an arch shape.
  • the arch shape may include a circle- segment shape, preferably with a curvature.
  • Said curvature may generally correspond to the curvature of the movement from the first engaging position PI to second engaging position P2.
  • the curvature may substantially correspond to the curvature of portions of chamber top 5210 and/or tub base 5220 being adjacent clip 5250 in the assembled position.
  • Clip 5250 may comprise at least one first clip clamping surface 5252- la configured to exert a clamping force on at least one chamber clamping surface 5216 of the chamber top 5210.
  • Clip 5250 may comprise at least one second clip clamping surface 5254- la configured to exert a clamping force to a base clamping surface 5226 of the tub base 5220.
  • First and second clip clamping surfaces 5252- l a, 5254- l a may be formed on opposing sides of clip 5250 and may face generally towards each other. However, the preferably opposing clip clamping surfaces may be arranged with an offset in the axial (longitudinal) direction of the clip (i.e. the tangential or peripheral direction of the humidifying chamber).
  • clip clamping surfaces 5252- ⁇ a, 5254- l a preferably abut or clamp against correspondin chamber and/or base clamping surfaces 5216, 5226 of chamber top 5210 and/or tab base 5220 respectively, as discussed further below.
  • Clip 5250 may have a substantially C-shaped or U-shaped cross-sectional portion.
  • the C-shaped or U-shaped cross-sectional portion may include the first and second clip clamping surfaces 5252-1 a, 5254- l a.
  • at least one first protrusion 5252 may protrude from the interior side 5250-1 of clip 5250.
  • First protrusion 5252 may have a hook shape and may be adapted to face in the assembled position chamber top 5210 and/or tub base 5220.
  • protrusion 5252 provides first clip clamping surface 5252- l a.
  • Clip 5250 may comprise second protrusions 5254 protruding from interior side 5250- 1 .
  • Second protrusion 5254 may also have a hook shape and may provide a second clip clamping surface 5254- la being adapted to engage the other of the chamber and base clamping surfaces 5216, 5226.
  • First and second protrusions 5252, 5254 and/or first and second clip clamping surfaces 5252- l a, 5254- l a may be offset with respect to each other in the peripheral direction D2 of chamber 5200.
  • Interior side 5250-1 may face at least a portion of chamber top 5210 and/or tub base 5220 in the assembled position and may be configured as a curved or circle segment.
  • First protrusion 5252 may be configured as a flange or rim.
  • Clip 5250 may comprise a second rim 5258 (not shown but indicated by dotted line on Fig. 8a) being the prolongation of the line connecting the three depicted second protrusions 5254.
  • Clip 5250 may comprise at least one grip 5255. Grip 5255 may protrude laterally outwardly after assembly. Grip 5255 may be used by the clinical staff to apply a force in a circumferential directio during assembly.
  • Clip 5250, chamber 5200 and humidification module 5100 are preferably configured so that the humidification module encloses chamber 5200, particularly clip 5250, so that clip 5250 cannot be slid from the interlocking position P2 to the non- interlocking position PI without prior removal of the chamber 5200 from the humidification module 5100. This may be achieved by the restriction of the movement of clip 5250 in the second direction D2 along the perimeter when the chamber is received in the module 5100.
  • Clip 5250 may comprise first and/or second protrusions 5252- 1. 5254- 1 extending preferably in a direction parallel to the axial direction of the assembled container or chamber 5200.
  • the protrusions 5252-1, 5254-1 may define a retaining portion adapted to avoid or reduce movement of the clip in the radial direction R (first direction Dl) in interrelation with corresponding chamber rim portion 5216- 1 and base rim portion 5226-1 on the humidifying chamber 5200. i.e., on chamber top 5210 and tub base 5220.
  • protrusions 5252-1, 5254- 1 may extend
  • first and second clip clamping surfaces 5252- la, 5254- 1 a are located at the front end of first and second protrusions 5252- 1. 5254- 1. They may be located in different areas of the clip.
  • First and second retainin portions 5252-1 , 5254-1 may be adapted to engage, preferably interlock, with respective chamber and base retaining portions 5234-2, 5242- 2 of chamber top 5210 and/or tub base 5220 respectively.
  • Retaining protrusions 5252-1, 5254- 1 may be configured as laterally protruding ends 5252- 1 , 5254- 1 protruding towards the respective engaged chamber flange 5216 and base flange 5226 in the assembled container or humidifying chamber 5200.
  • Retaining protrusions 5252-1, 5254- 1 may extend from at least one of the clip clamping surfaces, preferably at a distance from interior side 5250-1.
  • First and second laterally protruding ends 5252- 1 , 5254- 1 may be located at the free end of first and second protrusions 5252, 5254.
  • First and second laterally protruding ends 5252- 1 , 5254- 1 may be adapted to interlock with respective chamber retaining portion 5234-2 and base retaining portion 5242-2.
  • Clip 5250 may comprise first and second rims 5256. 5258 preferably covering at least a portion chamber and/or base flanges 5216, 5226. First and/or second rims 5256, 5258 are preferably integrally formed with at least one first and/or second protrusion 5252. 5254. Rim 5256 may be provided with a rim recess 5256-1 .
  • Fig. 9 depicts a seal 5260 to be disposed between chamber top 5210 and tub base 5220.
  • seal 5260 has a generally round shape with a substantially rectangular cross section. It is noted that seal 5260 may have any suitable shape to seal chamber top 5210 and tub base 5220, the shape is preferably complementary to the perimeter shape of the chamber top 5210 and tub base 5220. For instance, seal 5260 may also have a cross-sectional shape being substantially L-shaped. This may be of particular advantage for sealing when being clamped between, e.g., mating square- shouldered surfaces of chamber top and tub base.
  • Figs. 10a to lOd depict releasable clip 5250, chamber top 5210 and tub base 5220 after assembly.
  • Releasable clip 5250 embraces a portion of chamber top 5210 and a portion of tub base 5220.
  • clip 5250 may embrace or cover a portion of chamber flange 5216 and base flange 5226.
  • Chamber top 5210 and tub base 5220 are adapted to allow positioning in the first position PI in which the respective markings M l of clip 5250 and chamber top 5210 may be aligned.
  • First engaging position PI may be the only defined single position.
  • clip 5250 is preferably connected to chamber top 5210 and/or tub base 5220, more preferably not in an interlocking manner but in a position allowing for subsequent interlocking.
  • clip 5250 may apply no clamping forces or only low clamping forces, preferably via clip clamping surfaces onto chamber top 5210 and/or tub base 5220, preferably onto the chamber and base clamping surfaces 5216, 5226 of the chamber top 5210 and/or tub base 5220 respectively.
  • Releasable clip 5250 may be moved or slid into a second engaging position P2 along a peripheral direction C bein the second direction D2 (see Fig. 10b).
  • Clip 5250 and chamber and base flanges 5216, 5226 may provide a bayonet coupling 5230 further explained below.
  • Clip 5250 may be moved from the first position PI into the second position P2 preferably by a unidirectional movement along a, potentially curved, line. Preferably, the movement does not involve any pivoting or tilting of clip 5250.
  • the clip may move in a direction C along the perimeter of the chamber, preferably substantially parallel to the chamber and base clamping surfaces 5216, 5226 of chamber top 5210 and tub base 5220.
  • Second position P2 may be a clamping position in which chamber top
  • the second engagement position P2 may be configured as an interlocking position P2.
  • the flange and base retaining portions 5234-2, 5242-2 are aligned with one another.
  • clip 5250 is firstly moved in a first direction Dl or radial direction R in order to move clip 5250 into the first connecting or engaging position PI in which, preferably, the respective marking Ml of clip 5250 and chamber top 5210 are aligned.
  • first connecting or engaging position PI in which, preferably, the respective marking Ml of clip 5250 and chamber top 5210 are aligned.
  • Out of this position PI clip 5250 may be slid in a second direction D2. preferably being the tangential or circumferential direction, into the second position P2.
  • the first engaging position PI is the defined position at which the direction of movement is preferably changed from the first direction D l to the second direction D2.
  • FIG. l Oe and Fig. l f are enlarged views of the chamber top 5210, tub base 5220 and clip 5250 after assembly.
  • Clip 5250 is shown in the second engaging position P2.
  • second position P2 i an interlocking position.
  • First and second protrusions 5252. 5254. here more precisely first and second laterally protruding ends 5252-1. 5254- 1 may comprise the first and second clip clamping surfaces 5252- 1 a. 5254- l a clamping respective chamber and base clamping surfaces 5216, 5226 of chamber top 5210 and/or tub base 5220, preferably in the second position P2 so as to sealingly clamp and thus connect chamber top 5210 and tub base 5220.
  • the chamber and/or base clamping surfaces of chamber top 5210 and tub base 5220 are formed as flanges in the illustrated embodiments.
  • the chamber and base flanges 5216, 5226 may also be considered as chamber and base shoulders 5216, 5226.
  • the chamber and base clamping surfaces 5216, 5226 of chamber top 5210 and/or tub base 5220 may be formed on opposing sides and may face generally away from each other.
  • the chamber and base clamping surfaces 5216. 5226 of chamber top 5210 and tub base 5220 may be arranged with an offset or distanced in the peripheral second direction D2.
  • the chamber clamping surface 5216 and/or base clamping surface 5226 may extend at least at a portion along the perimeter of chamber top 5210 and/or tub base 5220 respectively, for instance, alon the chamber retaining portion 5234-2 and/or the base retaining portion 5242-2 respectively.
  • the chamber and/or base clamping surfaces 5216. 5226 preferably extend substantially parallel to the clip clamping surfaces 5252- l a, 5254- l a.
  • the clamping surfaces 5216. 5226 of chamber top 5210 and tub base 5220 may extend substantially parallel, similarly also the clip clamping surfaces 5252- l a, 5254- la may extend substantially parallel.
  • the clamping surfaces 5216, 5226, 5252-la, 5254-1 a may extend substantially horizontally, particularly in a position of use.
  • the retaining portions 5234- 2, 5242-2 may extend substantially vertically, particularly in a position of use.
  • clamping and retaining surfaces may be embodied in a single surface while, e.g., the respective clamping/retaining surfaces on the chamber top, tub base and clip may form a dove-tail connection.
  • the chamber top 5210 may comprise a chamber receiving portion 5234-1, a section of increasing flange thickness 5234-3 and a chamber retaining portion or clamping section 5234-2.
  • the tub base 5220 preferably comprises a base receiving portion 5242-1 , a section of increasing flange thickness and a base retaining portion or clamping section 5242-2.
  • the second engaging position P2 may be defined by the clamping sections 5234-2, 5242-2.
  • first and second positions PI and P2 may be located the portion of an increased flange thickness 5234-3.
  • Increased thickness may be understood to mean that the overall thickness of the chamber and base flanges 5216, 5226 being positioned one above another gradually increases, preferably in the second direction D2 depicted in Fig. 10b. Alternatively, the thickness as such may not need to increase, however, the distance between opposing chamber and base clamping surfaces 5216, 5226 of the chamber top 5210 and the tub base 5220 increases.
  • Clip 5250 may be adapted to slide along portions 5234-1, 5234-2 and 5234-3 of the chamber flange 5216 and along portions 5242-1 , 5242-2 of the base flange, preferably located on the surfaces of chamber and base flanges 5216, 5226 respectively facing away from each other.
  • the chamber and base clamping surfaces may be provided at least in portions 5234-2, 5234-3, and 5242-2, most preferably on the chamber top 5210 and the tub base 5220.
  • clip clamping surfaces 5252- l a, 5254- la may be adapted to slide in the peripheral direction D2 along surface portions of chamber top 5210 and tub base 5210.
  • the relative distance in the axial direction D3 between said surface portions of chamber top 5210 and tub base 5220 being in contact with the clip clamping surfaces may increase along the peripheral direction D2 thereby preferably urging the clip clamping surfaces 5252- l a, 5254- la away from each other in the direction parallel to axial direction D3.
  • This may cause a clamping force applied on the surface portions of chamber top 5210 and tub base 5220 contacting the clip.
  • the further the clip slides the higher are the clamping forces transmitted by the clip clamping surfaces 5252- la, 5254- la.
  • the clamping forces are preferably oriented so as to clamp chamber top 5210 and tub base 5220 together thereby increasing the sealing effect.
  • Chamber top 5210 and/or tub base 5220 may comprise chamber and base retaining portions 5234-2, 5242-2 adapted to engage with the retaining portion(s) 5252- ⁇ , 5254- 1 of clip 5250 thereby preferably avoiding or restricting movement in the radial direction R.
  • chamber and base rim portions 5216-1 , 5226- 1 and laterally protruding ends 5252- 1 . 5254- 1 may be interlocked in the radial direction R of assembled container or humidifying chamber 5200.
  • Laterally protruding ends 5252-1 , 5254-1 may be protruding in a direction D3 generally parallel to the longitudinal axis of the assembled container or chamber 5200.
  • Protruding ends 5252-1, 5254-1 may be adapted to slide along a portion of the chamber and/or base clamping surfaces 5216, 5226 of chamber top 5210 or tub base 5220.
  • Protruding ends 5252- 1. 5254-1 and rim portions 5216- 1 , 5226- 1 may comprise retaining surfaces 5252- l b, 5254- l b, 5216- l a, 5226- l a avoiding or restricting the movement in a radial direction R of chamber top 5210 and tub base 5220.
  • First and second protrusions 5252, 5254 may be interlocked in the chamber retaining portion 5234-2 and base retaining portion 5242-2. These chamber retaining portion 5234-2 and base retaining portion 5242-2 may be formed as undercuts.
  • Chamber top 5210 and tub base 5220 comprise chamber and base receiving portions 5234- 1 , 5242- 1 configured as recessed portions adapted to receive the generally C-shaped element of clip 5250 in the depicted embodiment.
  • the general C- or U-shape is formed by first and second protrusions 5252, 5254, preferably being offset in a circumferential direction.
  • first and second protrusions 5252, 5254 slide along the section of increasing flange thickness 5234-3 the clamping force exerted by first and second protrusions, more specifically by first and second clip clamping surfaces 5252- la, 5254- ia, gradually increases.
  • the difference between the distance of opposing clip clamping surfaces 5252- l a. 5254- l a to the respective distance between opposing chamber and base clamping surfaces of chamber top 5210 and tub base 5220 clamped there between decreases as the clip advances on the section of increasing flange thickness 5234-3.
  • the figures show a shoulder configured as a flange. Instead of radially outwardly (i.e.
  • Fig. 1 1 a depicts a chamber 5200 with chamber top 5210 and tub base
  • Chamber top 5210 may comprise a gas inlet 5212, a gas outlet 5214, a probe connector 5217 and/or a Luer connector 5218.
  • Chamber flange 5216 is arranged at the lower end of chamber top 5210 and extends along a portion of the perimeter.
  • Chamber mechanical guides 5215 are provide at both ends of chamber flange 5216.
  • chamber mechanical guides 5215 are located adjacent base mechanical guides 5240 of tub base 5220, the base mechanical guides being shown as wing portions.
  • the base mechanical guide 5240 and chamber mechanical guide 5215 of chamber top 5210 together form a channel which may be used for guiding the assembled container or chamber 5200 within the humidification module 5100.
  • Chamber and base mechanical guides 5215, 5240 may also serve to bias tub base 5220 against a heater plate 5120 of humidification module 5100.
  • Chamber top 5210 and tub base 5220 may be additionally held by releasable clip 5250 (not shown).
  • Clip 5250 may be adapted to embrace and/or clamp chamber top 5210 and tub base 5220 along a portion of their perimeter, preferably a portion along chamber and base flanges 5216, 5226.
  • the chamber and base flanges 5216, 5226 may comprise a chamber rim portion 5216- 1 and base rim portion 5226- 1 respectively, preferably at the outer end.
  • Releasable clip 5250 may comprise a substantially hook-shaped or C-shaped or U-shaped cross section being adapted to be clipped onto chamber and base flanges 5216, 5226.
  • clip 5250 and chamber and base flanges 5216, 5226 are interlocked after the clip has been clipped on the chamber and base flanges 5216, 5226.
  • chamber and base flanges 5216, 5226 may comprise an undercut retaining portion located behind chamber and base rim portions 5116-1, 5226- 1 radially inwardly. The assembled container shown in Figs.
  • 1 1a and 1 lb comprises a chamber flange 5216 which is located at a distance, a, to the upper connecting surface of tub base 5220, as best seen in Fig. l ib.
  • Protruding element 5232 of chamber top 5210 may be configured to be received in base recess 5244, preferably located in side wall 5224 of tub base 5220.
  • tub base 5220 may comprise three base recesses 5244.
  • Each base recess 5244 may comprise a recess receiving portion 5244- 1 and a recess undercut portion 5244-2.
  • Base recess 5244 is preferably substantially L-shaped.
  • recess receiving portion 5244- 1 and recess undercut portion 5244-2 together constitute a substantially L-shaped path.
  • Protruding element 5232 may be adapted to be guided along the substantially L-shaped path.
  • the bayonet coupling 5230 may comprise a protrudin element 5232, a recess receiving portion 5244-1 and a recess undercut section 5244-2.
  • Protruding element 5232 may be introduced into a recess receiving portion 5244-1 of tub base 5220 by a relative movement of protruding element 5232 in the recess receiving portion 5244-1 substantially in a first direction Dl into a first position.
  • the bayonet coupling may be locked in the first direction by a relative movement of protruding element 5232 and of the recess undercut portion 5244-2 substantially in a second direction D2 traversal to first direction D l , preferably at an angle a of about 60° to 120°, more preferably about 80° to 100°, further preferably about 85° to 95° and most preferably about 90°.
  • Fig. 13a and Fig. 13b depict chamber top 5210 having three protruding elements 5232 arranged along the perimeter.
  • Figs. 14a to 14c depict different configurations of base and chamber mechanical guides 5240, 5215.
  • the base and chamber mechanical guides depicted in Fig. 14a correspond to the mechanical guide depicted in Figs. 1 1 a to 12.
  • the base mechanical guide 5240 of tub base 5220 in Fig. 14b additionally comprises a bent upper wall 5240- 1. This may increase the upper surface preferably being in contact with humidifying module 5100.
  • Chamber mechanical guide 5215 of chamber top 5210 shown in Fig. 14c comprises a cover substantially covering base mechanical guide 5240 of tub base 5220. 5.5 GLOSSARY
  • air supplied to a patient may be atmospheric air, and in other forms of the present technology atmospheric air may be supplemented with oxygen.
  • Air circuit A conduit or tube constructed and arranged in use to deliver a supply of air or breathable gas between components such as a RPT device or humidifier and a patient interface.
  • the air circuit may be in fluid connection with the outlet of the pneumatic block and the patient interface.
  • the air circuit may be referred to as air delivery tube.
  • Blower or flow generator A device that delivers a flow of air at a pressure above ambient pressure.

Landscapes

  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Air Humidification (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

La présente invention concerne une chambre d'humidification (5200) pour l'humidification d'un gaz respirable, avec une partie supérieure de chambre (5210), une base de cuve (5220) et au moins un clip libérable (5250) afin de fixer la partie supérieur de chambre et la base de cuve pour former un récipient assemblé conçu pour contenir une réserve de liquide, le clip libérable serrant la partie supérieure de chambre et la base de cuve le long d'une partie de leur périmètre.
PCT/EP2015/059064 2014-05-01 2015-04-27 Chambre d'humidification pour l'humidification d'un gaz respirable Ceased WO2015165845A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201461987093P 2014-05-01 2014-05-01
US61/987,093 2014-05-01

Publications (1)

Publication Number Publication Date
WO2015165845A1 true WO2015165845A1 (fr) 2015-11-05

Family

ID=53188994

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/059064 Ceased WO2015165845A1 (fr) 2014-05-01 2015-04-27 Chambre d'humidification pour l'humidification d'un gaz respirable

Country Status (3)

Country Link
NZ (1) NZ630751A (fr)
TW (1) TW201607573A (fr)
WO (1) WO2015165845A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107226458A (zh) * 2017-07-24 2017-10-03 合肥康居人智能科技有限公司 一种用于制氧机加湿的装配机构
EP3560539A1 (fr) * 2018-04-24 2019-10-30 ResMed R&D Germany GmbH Tube à utiliser dans un humidificateur
CN112912125A (zh) * 2018-09-27 2021-06-04 瑞思迈私人有限公司 呼吸压力治疗系统
US11351329B2 (en) * 2019-04-17 2022-06-07 ResMed Pty Ltd CPAP system
US12377239B2 (en) 2019-03-21 2025-08-05 Fisher & Paykel Healthcare Limited Respiratory device for providing bubble CPAP
USD1092528S1 (en) 2019-09-10 2025-09-09 Fisher & Paykel Healthcare Limited Display screen of a respiratory support apparatus or portion thereof with graphical user interface

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11571549B2 (en) * 2017-08-02 2023-02-07 Sumitomo Bakelite Co., Ltd. Medical device
JP7555174B2 (ja) * 2017-08-02 2024-09-24 住友ベークライト株式会社 医療機器

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659604A (en) * 1970-03-30 1972-05-02 Fisher & Paykel Humidifying means
GB1569526A (en) * 1977-03-07 1980-06-18 Fisher & Paykel Humidifying apparatus
EP0201984A1 (fr) * 1985-04-04 1986-11-20 The BOC Group plc Appareil d'inhalation
EP0376584A2 (fr) * 1988-12-27 1990-07-04 Puritan-Bennett Corporation Module d'humidification pour humidificateur de gaz
US4944310A (en) 1981-04-24 1990-07-31 Somed Pty. Ltd. Device for treating snoring sickness
EP1197237A2 (fr) * 2000-10-10 2002-04-17 Gottlieb Weinmann Geräte für Medizin und Arbeitsschutz GmbH + Co. Appareil respiratoire et méthode de commande
US6532959B1 (en) 1998-05-22 2003-03-18 Resmed, Ltd. Ventilatory assistance for treatment of cardiac failure and cheyne-stokes breathing
EP1558877A2 (fr) 2002-10-31 2005-08-03 Gründler GmbH Dispositif et procede d'equilibrage de la temperature et d'humidification de gaz, notamment d'air respiratoire
WO2010031126A1 (fr) * 2008-09-17 2010-03-25 Resmed Ltd Humidification de gaz respiratoires
US7866944B2 (en) 2006-05-24 2011-01-11 Resmed Motor Technologies Inc Compact low noise efficient blower for CPAP devices
WO2012065999A2 (fr) 2010-11-15 2012-05-24 GRÜNDLER GmbH Procédés et dispositifs dans le domaine de traitement au moyen de gaz médicaux
US20130008440A1 (en) * 2009-09-17 2013-01-10 Resmed Limited Humidification of respiratory gases
WO2013020167A1 (fr) 2011-08-05 2013-02-14 Resmed Motor Technologies Inc. Soufflante
US8638014B2 (en) 2006-10-24 2014-01-28 Resmed Motor Technologies Inc Brushless DC motor with bearings
US8636479B2 (en) 2007-06-05 2014-01-28 Resmed Motor Technologies Inc Blower with bearing tube
WO2014038968A1 (fr) * 2012-09-07 2014-03-13 Fisher & Paykel Healthcare Limited Chambre d'humidification pour un appareil d'assistance respiratoire

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659604A (en) * 1970-03-30 1972-05-02 Fisher & Paykel Humidifying means
GB1569526A (en) * 1977-03-07 1980-06-18 Fisher & Paykel Humidifying apparatus
US4944310A (en) 1981-04-24 1990-07-31 Somed Pty. Ltd. Device for treating snoring sickness
EP0201984A1 (fr) * 1985-04-04 1986-11-20 The BOC Group plc Appareil d'inhalation
EP0376584A2 (fr) * 1988-12-27 1990-07-04 Puritan-Bennett Corporation Module d'humidification pour humidificateur de gaz
US6532959B1 (en) 1998-05-22 2003-03-18 Resmed, Ltd. Ventilatory assistance for treatment of cardiac failure and cheyne-stokes breathing
EP1197237A2 (fr) * 2000-10-10 2002-04-17 Gottlieb Weinmann Geräte für Medizin und Arbeitsschutz GmbH + Co. Appareil respiratoire et méthode de commande
EP1558877A2 (fr) 2002-10-31 2005-08-03 Gründler GmbH Dispositif et procede d'equilibrage de la temperature et d'humidification de gaz, notamment d'air respiratoire
US7866944B2 (en) 2006-05-24 2011-01-11 Resmed Motor Technologies Inc Compact low noise efficient blower for CPAP devices
US8638014B2 (en) 2006-10-24 2014-01-28 Resmed Motor Technologies Inc Brushless DC motor with bearings
US8636479B2 (en) 2007-06-05 2014-01-28 Resmed Motor Technologies Inc Blower with bearing tube
WO2010031126A1 (fr) * 2008-09-17 2010-03-25 Resmed Ltd Humidification de gaz respiratoires
US20130008440A1 (en) * 2009-09-17 2013-01-10 Resmed Limited Humidification of respiratory gases
WO2012065999A2 (fr) 2010-11-15 2012-05-24 GRÜNDLER GmbH Procédés et dispositifs dans le domaine de traitement au moyen de gaz médicaux
WO2013020167A1 (fr) 2011-08-05 2013-02-14 Resmed Motor Technologies Inc. Soufflante
WO2014038968A1 (fr) * 2012-09-07 2014-03-13 Fisher & Paykel Healthcare Limited Chambre d'humidification pour un appareil d'assistance respiratoire

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107226458B (zh) * 2017-07-24 2019-04-12 合肥康居人智能科技有限公司 一种用于制氧机加湿的装配机构
CN107226458A (zh) * 2017-07-24 2017-10-03 合肥康居人智能科技有限公司 一种用于制氧机加湿的装配机构
US11376392B2 (en) 2018-04-24 2022-07-05 ResMed Pty Ltd Tub for use in a humidifier
EP3560539A1 (fr) * 2018-04-24 2019-10-30 ResMed R&D Germany GmbH Tube à utiliser dans un humidificateur
CN112912125A (zh) * 2018-09-27 2021-06-04 瑞思迈私人有限公司 呼吸压力治疗系统
US12377239B2 (en) 2019-03-21 2025-08-05 Fisher & Paykel Healthcare Limited Respiratory device for providing bubble CPAP
JP2022529963A (ja) * 2019-04-17 2022-06-27 レスメド・プロプライエタリー・リミテッド Ｃｐａｐシステム
US11351329B2 (en) * 2019-04-17 2022-06-07 ResMed Pty Ltd CPAP system
US11458276B2 (en) 2019-04-17 2022-10-04 ResMed Pty Ltd CPAP system
US20230092335A1 (en) * 2019-04-17 2023-03-23 ResMed Pty Ltd Cpap system
EP4226963A1 (fr) * 2019-04-17 2023-08-16 ResMed Pty Ltd Système cpap avec réservoir d'eau
EP4230247A1 (fr) * 2019-04-17 2023-08-23 ResMed Pty Ltd Système cpap avec réservoir d'eau
US12296096B2 (en) * 2019-04-17 2025-05-13 ResMed Pty Ltd CPAP system
JP7690398B2 (ja) 2019-04-17 2025-06-10 レスメド・プロプライエタリー・リミテッド Ｃｐａｐシステム
USD1092528S1 (en) 2019-09-10 2025-09-09 Fisher & Paykel Healthcare Limited Display screen of a respiratory support apparatus or portion thereof with graphical user interface

Also Published As

Publication number Publication date
TW201607573A (zh) 2016-03-01
NZ630751A (en) 2016-03-31

Similar Documents

Publication Publication Date Title
US11642485B2 (en) Outlet connection assembly
US20240408340A1 (en) Patient interface
US12201780B2 (en) Humidifier reservoir
CN116350904B (zh) Cpap系统
WO2015165845A1 (fr) Chambre d'humidification pour l'humidification d'un gaz respirable
US10549060B2 (en) Outlet connection assembly and method of making the same
WO2020121255A1 (fr) Bloc pneumatique pour dispositif de thérapie par pression respiratoire
US10149954B2 (en) Device for providing breathable gas
CN216148035U (zh) 用于治疗呼吸病症的设备
US12478750B2 (en) Vents for patient interfaces
US20240082529A1 (en) Heat and moisture exchangers
WO2022204762A1 (fr) Évent pour un système respiratoire

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15723146

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15723146

Country of ref document: EP

Kind code of ref document: A1