WO2004071565A1 - Interface pour patient - Google Patents

Interface pour patient Download PDF

Info

Publication number
WO2004071565A1
WO2004071565A1 PCT/NZ2004/000026 NZ2004000026W WO2004071565A1 WO 2004071565 A1 WO2004071565 A1 WO 2004071565A1 NZ 2004000026 W NZ2004000026 W NZ 2004000026W WO 2004071565 A1 WO2004071565 A1 WO 2004071565A1
Authority
WO
WIPO (PCT)
Prior art keywords
patient
interface
gases
adjustable portion
mask
Prior art date
Application number
PCT/NZ2004/000026
Other languages
English (en)
Inventor
Alastair Edwin Mcauley
Christopher Earl Nightingale
Original Assignee
Fisher & Paykel Healthcare Limited
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 Fisher & Paykel Healthcare Limited filed Critical Fisher & Paykel Healthcare Limited
Publication of WO2004071565A1 publication Critical patent/WO2004071565A1/fr

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. mouth-to-mouth respiration; 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0611—Means for improving the adaptation of the mask to the patient with a gusset portion
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0616—Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits

Definitions

  • This invention relates to the delivery of respiratory gases, and in particular to patient interfaces for providing gases to patients requiring respiratory therapy.
  • the present invention consists in a patient interface for delivery of gases to a patient comprising: an interface body receiving gases and supplying gases to said patient, sealing means for sealing said body to the face of a patient, and an adjustable portion associated with said sealing means to adjust the spacing of said seal with respect to the face of said patient.
  • FIG 1 is a block diagram of a humidified continuous positive airway pressure (CPAP system) as might be used in conjunction with the patient interface present invention.
  • Figure 2 is an illustration of the patient interface in use according to the preferred embodiment of the present invention.
  • CPAP system continuous positive airway pressure
  • Figure 3 is a side view of the patient interface showing multiple locator positions according to the preferred embodiment of the present invention.
  • Figure 4 is a side view of the patient interface showing the multiple locator positions according to another embodiment of the present invention.
  • Figure 5 is plan view of the means for adjusting or baffles of the present invention when removed from the patient interface of the present invention.
  • Figure 6 is a side view of an alternative embodiment of the patient interface of the present invention, where the means for adjusting is a thin flexible membrane.
  • the present invention provides improvements in the field of patient interfaces for use in respiratory therapy.
  • an interface that can manually be adjusted to fit the contours of the patient's face which as a result is more comfortable for the patient to wear and reduces leakage as compared with interfaces of the prior art.
  • a patient interface is described in the preferred embodiment in use in a humidified CPAP system, the interface can be used in respiratory care generally or with a ventilator. It will be appreciated the present invention could equally be used with any form of positive pressure respiratory therapy.
  • CPAP Continuous Positive Airway Pressure
  • a patient 1 is receiving humidified and pressurised gases through a mask 2 connected to a humidified gases transportation pathway or inspiratory conduit 3.
  • delivery systems could also be VPAP (Variable Positive Airway Pressure) and BiPAP (Bi-level Positive Airway Pressure) or numerous other forms of respiratory therapy.
  • Inspiratory conduit 3 is connected to the outlet 4 of a humidification chamber 5 which contains a volume of water 6.
  • Inspiratory conduit 3 may contain heating means or heater wires (not shown) which heat the walls of the conduit to reduce condensation of humidified gases within the conduit.
  • Humidification chamber 6 is preferably formed from a plastics material and may have a highly heat conductive base (for example an aluminum base) which is in direct contact with a heater plate 7 of humidifier 8.
  • Humidifier 8 is provided with control means or electronic controller 9 which may comprise a microprocessor based controller executing computer software commands stored in associated memory.
  • Controller 9 receives input from sources such as a patient input means or dial 10 through which a patient of the device may, for example, set a predetermined required value (preset value) of humidity or temperature of the gases supplied to patient 1.
  • the controller may also receive input from other sources; for example temperature and/or flow velocity sensors 11 and 12 through connector 13 and heater plate temperature sensor 14.
  • controller 9 determines when (or to what level) to energise heater plate 7 to heat the water 6 within humidification chamber 5.
  • water vapour begins to fill the volume of the chamber above the water's surface and is passed out of the humidification chamber 5 outlet 4 with the flow of gases (for example air) provided from a gases supply means or blower 15 which enters the chamber through inlet 16.
  • gases for example air
  • Blower 15 is provided with variable pressure regulating means or variable speed fan 21 which draws air or other gases through blower inlet 17.
  • the speed of variable speed fan 21 is controlled by electronic controller 18 (or alternatively the function of controller 18 could carried out by controller 9) in response to inputs from controller 9 and a patient set predetermined required value (preset value) of pressure or fan speed via dial 19.
  • the mask referred to may be a nasal mask, full face mask or any other type of mask.
  • the mask 2 when in operation is positioned around the nose and/or mouth of the patient 1 with the headgear 108 secured around the back of the head of the patient 1.
  • the restraining force from the headgear 108 on the hollow body 102 ensures enough compressive force on the mask cushion or seat 30, to provide an effective seal against the patient's face.
  • the mask 2 includes a hollow body 102 with an inlet 103 connected to the inspiratory conduit 3.
  • the headgear 108 can be attached to the mask 2 by any method as is provided by the mask.
  • the headgear 108 is securely fixed to the mask, as shown in Figure 2; alternately the headgear 108 is slidably, pivotably or flexibly connected to the mask 2.
  • An example sliding connection is disclosed in US Application Number 09/881633.
  • An example of pivoting connection is given in US Patent Number 5662010. The contents of each of these are incorporated herein by reference.
  • the hollow body 102 is constructed of a relatively inflexible material for example, polycarbonate plastic. Such a material would provide the requisite rigidity as well as being transparent and a relatively good insulator.
  • the expiratory gases can be expelled through a valve (not shown) in the mask, a further expiratory conduit (not shown), or any other such method as is known in the art.
  • a seal 30 On the periphery of the hollow body 102 is a seal 30.
  • the seal 30 is preferably manufactured as one piece and may be made from any suitable gas tight, tough, flexible material which does not irritate the human skin on contact.
  • the seal material must be very thin (typically 0.1 - 0.6 mm thick) so that it moulds easily to the contours of the face. Silicone rubber has been found to be a suitable material, but other appropriate materials may be used, such as foam or other rubber materials.
  • the seal 30 is larger overall than the internal dimensions of the hollow body 102, so that in use the edges of the seal extend beyond the mask to form an airtight seal with the patient's 1 face.
  • the patient interface 2 of the present invention is a mask that includes a means for adjusting the spacing between the mask seal and the face of a patient.
  • This means for adjusting is generally an adjustable portion 31 that is an integral part of the seal 30 and mask body 102.
  • the adjustable portion 31 is designed to move and fix into a various number of positions so to accommodate facial features of a patient 1. For example, if a patient has a high bridge nose, a normal mask will not fit properly around their nose, therefore leaks may occur and it will be uncomfortable for the patient to wear.
  • the adjustable portion 31 can be manually moved to a position that will accommodate the patient's high- bridged nose. This eliminates the possibility of leaks and increases the comfort for the patient 1.
  • the adjustable portion 31 may be located on the forehead, upper lip or chin sections of the mask 2. In Figure 2, the adjustable portion 31 is a set of baffles located in the nasal bridge region of the mask 2.
  • the fitting mechanism 31 may be manually adjusted by the patient or other person to suit the patient.
  • the bellows may be retracted to move the top of the seal 30 off the patient's face by a predetermined level.
  • the adjustable portion 31 will then be locked into the desired position. The structure of the adjustable portion 31 will now be described.
  • FIG. 3 shows a nasal mask 3 of the preferred embodiment.
  • the adjustable portion 31 is located on the nasal bridge region of the mask 2.
  • the adjustable portion 31 is comprised of a series of baffles 33, 34, 35, a locking member 32 and locators 36a to 36d, (of which only one of two sets is shown).
  • the baffles 33, 34, 35 are preferably manufactured from the same flexible material as the seal 30 and can be manufactured to be an integral part of the seal 30. Alternately the baffles 33, 34, 35 are attached to the seal 30 in a flexible manner.
  • the seal 30 is very flexible; the seal 30 conforms readily to the contours of the patient's face and forms an effective seal whilst applying a relatively light and uniform pressure to the face.
  • the rigid or semi rigid material of the shell 102 provides support for a major proportion of the seal 30.
  • the baffles 33, 34, 35 are of a substantially similar shape; for this description only one baffle 33 will be described in detail, but the same description will apply to the baffles 33, 34, 35.
  • the baffle 33 has a profile similar to that of a semicircle. As shown in Figure 5, the baffle 33 extends between either sides of the rigid shell 102. The result of this is a wider midsection compared to the outer edges of the baffles 33.
  • baffle 33 The outer edges and one side of the midsection of the baffle 33 are connected to the rigid shell 102 while the mid section of the baffle 33 is connected to the next baffle 34.
  • baffle 34 is connected to baffle 35 and baffle 35 is connected to the seal 30. This allows the baffles 33, 34, 35 to be compressed and extended in a concertina-like fashion.
  • a locking member 32 is disposed on the exterior of the rigid shell 102 and connected to the end baffle 35.
  • the locking member 32 is preferably made from a lightweight resilient plastic.
  • the locking 32 member is comprised a locking arm 37 that extends between either side of the rigid shell 102, two locating arms 38 (of which only one of two is shown) located on either side of the rigid shell 102, pivot points 40a, 40b (of which only one 40a is shown in Figure 3) and locking points 41 (of which only one of two is shown).
  • the locking arm 37 sits in the junction between the seal 30, and the baffle 35 connected to the seal 30.
  • the locking arm 37 is connected to the mask 2 by way of pivot points 40a, 40b.
  • the pivot points 40a, 40b are located on either side of the rigid shell 102 near the ends of the baffles 33, 34, 35 and the seal 30. Reference will be made to one half of the mask 2 as shown in Figure 3, but also applies to the other side of the mask 2 which is not shown. Extending from both pivot points 40 are two locating arms 38.
  • the locating arm 38 extends at approximately a 60 degree angle from the locking arm 37 and is connected to and made from the same material as the locking arm 37.
  • a locking point 41 At the furthest end of the locating arms 38 away from the pivot point 40a, is a locking point 41.
  • the locking points 41 are holes in the locating arm 38 and is adapted to connect to locators 36a to 36d on the rigid shell 102.
  • the locators 36a to 36d are plastic protrusions that extend from the rigid shell 102 and are able to be connected to the locking point 41. In the preferred embodiment there are four locators 36a to 36d on each side of the rigid shell 102, but in alternate embodiments there may be more or less locators.
  • the locators 36a to 36d are matched in position on the shell 102 to the locators on the other side of the mask (not shown).
  • the locators 36a to 36d are uniformly spread across the each side of the shell 102. They are spread in a fashion so that when in use, each locator 36a to 36d provides a different shape to the seal 30 of mask 2.
  • the locking point 41 is clipped onto one of the protrusions of the locator's 36a to 36d.
  • the mask 2 may also be locked into an infinite number of positions.
  • Figure 4 shows the mask 2' of an alternate embodiment of the present invention.
  • the mask 2' is a full face mask with the adjustable portion 31' located at the nasal bridge region of the mask 2'.
  • the adjustable portion 31' is comprised of a series of baffles 33', 34', 35' and a locking member 32'.
  • the baffles 33', 34', 35' are the same as described previously.
  • the locking member 32' is attached to the mask 2' at three positions, at the pivot points 40', locking points 41', and at the top of the seal 30'.
  • the locking member 32' is comprised of a locating arm 38', a locking point 41', a pivot point 40' and a support arm 42'.
  • Support arm 42' runs perpendicular to both the baffles 33', 34', 35', and extends perpendicularly away from the junction between the locating arms 38'.
  • the end of the support arm 42' is connected the top of the seal 30'.
  • the locating arm 38' extends over the top of the baffles 33', 34', 35' between the pivot points 40'.
  • Pivot point 40' is located on the shell 102' near the junction between the outer edges of the baffles 33',
  • baffles 33', 34', 35' as described above may vary in number.
  • the preferred embodiment of the mask of the present invention has been described with reference to three baffles, but it is envisioned that there can be a greater or fewer number of baffles present on the mask 2'.
  • baffles may be made from rigid material, for example the same material as the shell 102' and flexibly connected together to create flexible baffles.
  • FIG. 6 A further alternative embodiment of the mask is shown in Figure 6, where the means for adjusting or adjustable portion on the mask 50 is a flexible portion 51 that is not baffles as described above, but a single thin membrane 51.
  • This thin membrane 51 may be manufactured in same material that the seal 30 (see Figure 3) is manufactured from. Alternately the membrane 51 may be manufactured from other appropriate flexible and thin materials.
  • the mask will generally function in the same way as previously described. For example, in order to adjust the seal so as to reduce the spacing between the mask seal 54 and the face of a patient the locking arm 53 may be moved and the membrane 51 will flex inwardly and shift into a position as shown by the dashed line 52.
  • FIG. 1 For example, locators are connected to form a long continuous protrusion. Locking points are modified to slide along this continuous protrusion and lock into position wherever the patient desires.
  • the above described patient interfaces are preferably supported by conventional strapping (not shown) secured to the edges of the interface body in known manners.

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  • 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)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

La présente invention se rapporte à des interfaces (2) pour patient que l'on utilise dans une thérapie respiratoire. L'invention se rapporte plus particulièrement à une interface (2) que l'on peut régler pour épouser les contours du visage (1) d'un patient. L'interface (2) comporte des moyens de réglage de l'espacement entre le joint (30) de l'interface pour patient et le visage des patients (1). Ces moyens de réglage sont normalement une partie réglable (31) faisant partie intégrante du joint (30) et un corps d'interface (102). La partie réglable (31) peut être déplacée manuellement dans une position qui va s'adapter à différentes tailles et formes des patients (1). La partie réglable (31) peut être placée sur des sections du front, de la lèvre supérieure ou du menton de l'interface (1). Une fois réglée, la partie réglable (31) peut être bloquée dans la position souhaitée. Elle peut être constituée d'une série d'éléments déflecteurs mobiles ou d'une membrane mince que l'on peut fléchir, permettant la modification de la partie joint (30).
PCT/NZ2004/000026 2003-02-12 2004-02-11 Interface pour patient WO2004071565A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NZ52413703 2003-02-12
NZ524137 2003-02-12
NZ52527003 2003-04-09
NZ525270 2003-04-09

Publications (1)

Publication Number Publication Date
WO2004071565A1 true WO2004071565A1 (fr) 2004-08-26

Family

ID=32871329

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2004/000026 WO2004071565A1 (fr) 2003-02-12 2004-02-11 Interface pour patient

Country Status (1)

Country Link
WO (1) WO2004071565A1 (fr)

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WO2008028014A2 (fr) * 2006-08-31 2008-03-06 Nellcor Puritan Bennett Llc Interface patient ajustable pour un système d'assistance respiratoire
EP2083925A2 (fr) * 2006-11-13 2009-08-05 RIC Investments, LLC. Interface avec le patient avec une empreinte variable
WO2010071453A1 (fr) * 2008-12-17 2010-06-24 Fisher & Paykel Healthcare Limited Interface d'étanchéité d'un masque respiratoire
WO2010148453A1 (fr) * 2009-06-24 2010-12-29 Resmed Ltd Système de masque ajustable et procédés correspondants
EP2376165A1 (fr) * 2008-12-11 2011-10-19 Koninklijke Philips Electronics N.V. Interface respiratoire avec plaque souple
WO2012140514A1 (fr) * 2011-04-15 2012-10-18 Fisher & Paykel Healthcare Limited Interface comprenant une partie de pont nasal roulante
JP2013533085A (ja) * 2010-08-09 2013-08-22 コーニンクレッカ フィリップス エヌ ヴェ 動的な自己調節機構を有する患者インタフェース装置
WO2014045136A1 (fr) * 2012-09-19 2014-03-27 Koninklijke Philips N.V. Masque facial intégral articulé
CN103732281A (zh) * 2011-07-01 2014-04-16 费雪派克医疗保健有限公司 鼻罩接口组合件
WO2014062070A1 (fr) * 2012-10-17 2014-04-24 Fisher & Paykel Healthcare Limited Interface comprenant une partie d'étanchéité nasale et une charnière mobile
WO2015020535A1 (fr) * 2013-08-05 2015-02-12 Fisher & Paykel Healthcare Limited Joint pour interface patient, ensembles interfaces et leurs aspects
US9027556B2 (en) 2008-03-04 2015-05-12 Resmed Limited Mask system
USD740932S1 (en) 2013-09-24 2015-10-13 3M Innovative Properties Company Respirator with raised face seal flexing region
USD741475S1 (en) 2015-02-27 2015-10-20 3M Innovation Properties Company Respirator mask having a communication grille
USD742504S1 (en) 2015-02-27 2015-11-03 3M Innovative Properties Company Respirator mask
USD743536S1 (en) 2015-02-27 2015-11-17 3M Innovative Properties Company Respirator mask having a circular button
USD744088S1 (en) 2014-05-22 2015-11-24 3M Innovative Properties Company Respirator mask having a circular button
USD746437S1 (en) 2014-05-22 2015-12-29 3M Innovative Properties Company Respirator mask having a communication grille
USD747795S1 (en) 2015-02-27 2016-01-19 3M Innovative Properties Company Respirator mask body
US9308342B2 (en) 2005-01-12 2016-04-12 Resmed Limited Respiratory masks with gusseted cushions
USD754844S1 (en) 2014-05-22 2016-04-26 3M Innovative Properties Company Respirator mask
USD759807S1 (en) 2014-05-22 2016-06-21 3M Innovative Properties Company Respirator mask exhalation port
US9381316B2 (en) 2005-10-25 2016-07-05 Resmed Limited Interchangeable mask assembly
USD767116S1 (en) 2015-02-27 2016-09-20 3M Innovative Properties Company Respirator mask having an exhalation port
USD776258S1 (en) 2013-09-24 2017-01-10 3M Innovative Properties Company Respirator with face seal multiple flexing region
USD787659S1 (en) 2013-09-24 2017-05-23 3M Innovative Properties Company Respirator with face seal flexing region
USD787660S1 (en) 2014-05-22 2017-05-23 3M Innovative Properties Company Respirator mask having a face seal flexing region
USD795416S1 (en) 2015-02-27 2017-08-22 3M Innovative Properties Company Respirator mask
EP1915199A4 (fr) * 2005-08-15 2017-11-29 RIC Investments, LLC. Interface patient avec coussin réglable
US9907922B2 (en) 2012-09-04 2018-03-06 Fisher & Paykel Healthcare Limited Valsalva mask
USD823455S1 (en) 2017-02-23 2018-07-17 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
USD823454S1 (en) 2017-02-23 2018-07-17 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
USD824020S1 (en) 2017-02-23 2018-07-24 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
US10232135B2 (en) 2012-08-03 2019-03-19 Fisher & Paykel Healthcare Limited Deformable insert for low pressure patient interface
US10463825B2 (en) 2004-04-02 2019-11-05 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US10518054B2 (en) 2014-08-25 2019-12-31 Fisher & Paykel Healthcare Limited Respiratory mask and related portions, components or sub-assemblies
US10603456B2 (en) 2011-04-15 2020-03-31 Fisher & Paykel Healthcare Limited Interface comprising a nasal sealing portion
USD882066S1 (en) 2016-05-13 2020-04-21 Fisher & Paykel Healthcare Limited Frame for a breathing mask
USD884153S1 (en) 2018-04-04 2020-05-12 Fisher & Paykel Healthcare Limited Frame for a mask assembly
US10792451B2 (en) 2008-05-12 2020-10-06 Fisher & Paykel Healthcare Limited Patient interface and aspects thereof
US10835702B2 (en) 2010-10-08 2020-11-17 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
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US10918818B2 (en) 2013-07-17 2021-02-16 Fisher & Paykel Healthcare Limited Patient interface and aspects thereof
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US10994090B2 (en) 2015-09-04 2021-05-04 Fisher & Paykel Healthcare Limited Patient interfaces
US11179535B2 (en) 2008-10-10 2021-11-23 Fisher & Paykel Healthcare Limited Nasal pillows for a patient interface
US11260194B2 (en) 2006-07-14 2022-03-01 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US11331447B2 (en) 2008-03-04 2022-05-17 ResMed Pty Ltd Mask system with snap-fit shroud
US11351323B2 (en) 2014-11-14 2022-06-07 Fisher & Paykel Healthcare Limited Patient interface for PAP therapy with rigid headgear connection elements
US11452833B2 (en) 2016-10-05 2022-09-27 Fisher & Paykel Healthcare Limited. Patient interfaces
US11541197B2 (en) 2008-07-18 2023-01-03 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US11701486B2 (en) 2014-06-17 2023-07-18 Fisher & Paykel Healthcare Limited Patient interfaces
US11806452B2 (en) 2012-08-08 2023-11-07 Fisher & Paykel Healthcare Limited Headgear for patient interface
US11819612B2 (en) 2019-10-10 2023-11-21 Fisher & Paykel Healthcare Limited Respiratory mask system
US12017005B2 (en) 2015-03-04 2024-06-25 Fisher & Paykel Healthcare Limited Mask system headgear
JP7571333B2 (ja) 2011-04-15 2024-10-22 フィッシャー アンド ペイケル ヘルスケア リミテッド ロールする鼻梁部を有するインタフェース

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GB823887A (en) * 1957-06-06 1959-11-18 Electric Storage Battery Co Improvements in respirator
US4971051A (en) * 1987-07-13 1990-11-20 Toffolon Norman R Pneumatic cushion and seal
US5074297A (en) * 1989-12-19 1991-12-24 The General Hospital Corporation Self-sealing mask for delivering intermittent positive pressure ventilation
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US11395894B2 (en) 2004-02-23 2022-07-26 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US11471635B2 (en) 2004-02-23 2022-10-18 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
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