US20160367782A1 - Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask - Google Patents
Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask Download PDFInfo
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- US20160367782A1 US20160367782A1 US15/251,568 US201615251568A US2016367782A1 US 20160367782 A1 US20160367782 A1 US 20160367782A1 US 201615251568 A US201615251568 A US 201615251568A US 2016367782 A1 US2016367782 A1 US 2016367782A1
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- vent
- mask
- membrane
- respiratory mask
- shell
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- 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
- A61M16/22—Carbon dioxide-absorbing devices ; Other means for removing carbon dioxide
-
- 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
- A61M16/0633—Means for improving the adaptation of the mask to the patient with forehead support
-
- 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
- A61M16/0633—Means for improving the adaptation of the mask to the patient with forehead support
- A61M16/0638—Means for improving the adaptation of the mask to the patient with forehead support in the form of a pivot
-
- 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
- A61M16/0633—Means for improving the adaptation of the mask to the patient with forehead support
- A61M16/0644—Means for improving the adaptation of the mask to the patient with forehead support having the means for adjusting its position
-
- 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
- A61M16/0633—Means for improving the adaptation of the mask to the patient with forehead support
- A61M16/0644—Means for improving the adaptation of the mask to the patient with forehead support having the means for adjusting its position
- A61M16/065—Means for improving the adaptation of the mask to the patient with forehead support having the means for adjusting its position in the form of a pivot
-
- 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
- A61M16/0683—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. mouth-to-mouth respiration; Tracheal tubes
- A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
- A61M16/0816—Joints or connectors
-
- 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
- A61M16/0816—Joints or connectors
- A61M16/0825—Joints or connectors with ball-sockets
-
- 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
- A61M2202/0225—Carbon oxides, e.g. Carbon dioxide
-
- 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
- A61M2205/7536—General characteristics of the apparatus with filters allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
Definitions
- the present invention relates to a respiratory mask and a vent for a respiratory mask.
- CPAP Continuous Positive Airway Pressure
- SDB sleep disordered breathing
- OSA obstructive sleep apnea
- CPAP treatment for OSA air or other breathable gas is supplied to the entrance of a patient's airways at a pressure elevated above atmospheric pressure, typically in the range 3-20 cm H 2 O, as measured in the patient interface. It is also known for the level of treatment pressure to vary during a period of treatment in accordance with patient need, that form of CPAP being known as automatically adjusting nasal CPAP treatment, as described in commonly-assigned U.S. Pat. No. 5,245,995, incorporated herein by reference in its entirety.
- Non-invasive positive pressure ventilation is another form of treatment for breathing disorders including sleep disordered breathing.
- NIPPV involves a relatively high pressure of gas being provided in the patient interface during the inspiratory phase of respiration and a relatively low pressure or atmospheric pressure being provided in the patient interface during the expiratory phase of respiration.
- the pressure can be made to vary in a complex manner throughout the respiratory cycle.
- the pressure at the patient interface during inspiration or expiration can be varied through the period of treatment as disclosed in the commonly-assigned International PCT Patent Application No. WO 98/12965 and International PCT Patent Application No. WO 99/61088, both incorporated herein by reference in their entireties.
- the patient interface for CPAP treatment includes a nasal mask.
- the nasal mask is generally defined by a mask shell which forms an inner cavity defined by its interior surface, mask cushion and the user's face, a gas inlet which may or may not include a separate component such as a swivel elbow.
- a nose-mouth mask or full-face mask or nasal prongs or nasal pillows can be used.
- any reference to a mask is to be understood as incorporating a reference to a nasal mask, nose-mouth mask, full face mask, nasal prongs or nasal pillows unless otherwise specifically indicated.
- the mask incorporates, or has in close proximity, a gas washout vent for venting exhaled gases to atmosphere.
- the gas washout vent (the vent) is sometimes referred to as a CO 2 washout vent.
- the apparatus is quiet and comfortable to encourage patient compliance with therapy.
- the exhausting to atmosphere of exhaled gas through the vent creates noise.
- minimization of such noise is desirable for both the comfort of the patient and any bed partner.
- Systems for the delivery of nasal CPAP treatment often incorporate in-line humidifiers to minimize drying of the nasal mucosa and increase patient comfort. Accordingly, it is also desirable that a vent not block when used with humidified gas. It is also desirable that a vent be easily cleaned or economically disposable.
- vent configurations are known.
- One approach to vent configuration is to create within the mask shell one or more openings that allow for the flow of exhaust gas from the inner cavity to atmosphere.
- the exhaust flow may be directed through the incorporation of an additional pipe extending out from the opening located on the mask shell outer surface.
- the Assignee's nasal mask system known by the name “ResMed Modular Mask System” incorporates an outlet vent located in the swivel elbow connected to the mask shell.
- the ports defining the vent have the same cross-sectional thickness and are formed from the same polycarbonate material that is used to form the swivel elbow and mask shell frame.
- the whisper swivel manufactured by Respironics, Inc., provides three slots on the circumference of a generally cylindrical attachment piece.
- the attachment piece is to be interposed between the mask shell and the gas conduit.
- the attachment piece is made of the same material and thickness as is used to make the mask shell.
- European Patent No. 0 697 225 which is incorporated herein by reference in its entirety, discloses a vent formed from a porous sintered material.
- a known vent manufactured by Gottleib Weinmann Gerate Fur Medizin Und Anlagenschutz GmbH and Co., comprises a generally cylindrical insert to be interposed, in use, between the mask shell and the gas conduit.
- the insert includes a window which is covered with a porous sintered material of approximately 3-4 mm thickness.
- the Draeger vent comprises a stack of 21 annular disks that have slots in their adjacent surfaces for gas to flow therethrough. Each slot has a length of 5 to 7 mm, as measured along the path from the interior of the vent to atmosphere.
- the Assignee produces a respiratory mask known as the MIRAGE® nasal mask system and the MIRAGE® full-face mask (the MIRAGE® mask).
- the MIRAGE® mask has a crescent shaped opening in the mask shell in which is located a complementary shaped crescent elastometric insert with six holes therein which constitutes the vent.
- the elastomeric inset has a cross-sectional thickness of 3 to 4 mm.
- the vent of the type used in the MIRAGE® is described in International Patent Application No. WO 98/34665 and Australian Patent No. 712236, both of which are incorporated herein in their entireties.
- vent assembly suitable for use with a mask used in CPAP treatment wherein the vent assembly is a thin air permeable membrane.
- the membrane is thinner than the mask frame.
- the membrane is thinner than 0.5 mm.
- the membrane has an approximate thickness of 0.05 mm.
- the membrane is constructed from a hydrophobic material such as polytetrafluoroethylene (PTFE).
- PTFE polytetrafluoroethylene
- the membrane may comprise a mesh material, such as a porous fabric or a PTFE mesh.
- the mesh material may be capable of thickening upon stretching, e.g., by use of an auxetic material including auxetic fibers.
- the fibers may have negative Poisson's Ratio, as well as low Young's Modulus (to enable easy stretching).
- the auxetic material can be in the form of sheet material having one or more perforations and/or slits, instead of a mesh.
- the membrane is constructed from expanded PTFE.
- the expanded PTFE membrane is mounted on a polypropylene scrim.
- the pores of the membrane have a reference pore size of 10 to 15 microns.
- the membrane is constructed from stainless steel.
- the stainless steel sheet has a thickness of approximately 0.45 mm and a number of holes, each hole having a diameter of approximately 0.1 mm.
- the total open area of such a stainless steel membrane is approximately 5%.
- the membrane of the vent has a superficial cross-sectional area of approximately 500 mm 2 .
- the vent assembly comprises a membrane attached to a vent frame, the vent assembly forming an insert which can be remove ably attached to a mask frame.
- a respiratory mask for communicating breathable gas to the entrance of a wearer's airways, the mask including (i) mask shell, (ii) a gas inlet and (iii) an opening into which an insert constructed from a thin air permeable membrane with a corresponding shape may be placed.
- the opening may be positioned in the mask shell or in the gas inlet.
- the mask includes a mask shell with an integrally formed gas inlet and the opening is provided in the mask shell remote the inlet.
- the mask includes a mask shell with an integrally formed gas inlet and the opening is provided in the gas inlet.
- the mask includes a mask shell with a separately formed gas inlet attached thereto and the opening is provided in the mask shell remote the inlet.
- the mask includes a mask shell with a separately formed gas inlet attached thereto and the opening is provided in the gas inlet.
- Another aspect of the present invention provides a respiratory mask arrangement for communicating breathable gas to the entrance of a wearer's airways, the mask arrangement including a vent assembly comprising an opening with a thin air permeable membrane extending across an opening.
- the present invention provides an apparatus for delivering CPAP, which apparatus includes a mask arrangement for communicating breathable gas to the entrance of a wearer's airways, the mask arrangement including a gas washout vent assembly comprising an opening with a thin air permeable membrane extending across said opening.
- FIG. 1 is a perspective view of a respiratory mask according to a first embodiment of the invention
- FIG. 2 is a perspective view of a respiratory mask according to a second embodiment of the invention.
- FIG. 3 is a perspective view of a respiratory mask according to a third embodiment of the invention.
- FIG. 4 is a partial cross-sectional view of a vent assembly according to a fourth embodiment of the invention.
- FIG. 5 is a partial cross-sectional view of a vent assembly according to a fifth embodiment the invention.
- FIG. 6 is a perspective view of a respiratory mask according to sixth embodiment of the invention.
- FIG. 7 is a perspective view of a full-face mask according to a seventh embodiment of the invention.
- FIG. 8 is an enlarged detailed view of an insert suitable for use with the masks shown in FIG. 6 and FIG. 7 ;
- FIG. 9 is a perspective view of a vent assembly according to an eighth embodiment of the invention where the thin air permeable membrane is located in a cylindrical position on a tube suitable for attachment to the mask elbow;
- FIGS. 10-16 describe alternative embodiments of the present invention in which auxetic fibers are used in conjunction with the vent assembly
- FIG. 17 illustrates a vent according to yet another embodiment of the present invention.
- FIG. 18 is a mask with a vent according to still another embodiment of the present invention.
- FIG. 1 shows a patient interface, e.g., a nasal respiratory mask 10 , according to a first embodiment of the invention.
- the mask 10 includes a rigid plastic mask shell 12 that has a peripheral flange 14 for mounting of a cushion (not shown) to the shell 12 .
- the cushion abuts the wearer's face in use and is well known in the art.
- the flange 14 includes slots 15 for the connection of mask restraining straps (not shown) that extend around the head of the wearer to maintain the mask 10 adjacent to the wearer's face.
- the straps are also known in the art.
- the shell 12 also includes an arm 16 , which terminates in a fitting 18 that is adapted to connect to a forehead support (not shown), which is also known in the art.
- the mask shell 12 includes a breathable gas inlet 20 which is rotatably mounted to the shell 12 .
- the inlet 20 has a first end 22 which is adapted for connection with a breathable gas supply conduit (not shown) and a second end 24 which is adapted to connect to, and communicate the supplied gas to the interior of the shell 12 for subsequent communication with the wearer's airways.
- the mask 10 includes a gas washout vent constituted by an opening 26 in the shell 12 across which extends a thin air permeable membrane 28 .
- the thin air permeable membrane 28 is a stainless steel sheet approximately 0.45 mm thick having holes with a diameter approximately 0.1 mm in diameter.
- the total open area is approximately 5% of the total superficial surface area of the sheet.
- the dimensions of the sheet are approximately 322 mm 2 .
- the holes are, e.g., laser cut into the stainless steel.
- the holes are desirably laser cut or flame cut through the stainless steel, and in general, have a diameter less than about 0.2 mm.
- the holes have a diameter of less than 0.2 mm, and preferably provide a total open area of approximately 1% to 25% of the superficial surface area of the steel.
- the holes may be tapered (in a gradual or stepped manner) through their internal bore.
- the membrane includes a plurality of holes each having a diameter in the range of about 0.1-0.3 mm, with an open area ranging from 5 to 60%, and sufficient area (i.e., number of holes) to provide adequate flow at low pressures such as 4 cmH 2 O to meet the requirements to flush CO 2 .
- a preferred embodiment of this invention is a mask shell that has a thickness of 0.45 mm, holes with a diameter of 0.1 mm that are drilled, molded, laser cut or otherwise constructed therethrough, an open area of about 5% in the region containing the holes, and a total area of the vent of about 300-400 mm 2 , preferably about 320-330 mm 2 , and more preferably about 322 mm 2 .
- the holes are tapered such that the diameter at the exterior of the mask is marginally smaller than that at the interior of the mask.
- FIG. 2 shows a nasal respiratory mask 40 according to a second embodiment of the invention.
- the mask 40 has a shell 12 with a gas inlet 20 .
- the mask shell includes openings 42 which are adapted to snap engage with connection fittings (not shown) provided on the end of mask restraining straps (not shown).
- the mask 40 includes an adjustable forehead support mechanism indicated generally by the reference numeral 44 .
- the mask 40 also includes a vent constituted by an opening 26 formed in the gas inlet 20 across which extends a thin air permeable membrane 28 .
- FIG. 3 shows a mask 60 according to a third embodiment of the present invention.
- the mask 60 includes a mask shell 12 with an integrally formed fixed gas inlet 62 .
- a cushion 64 is attached to the peripheral flange 14 ( FIG. 2 ) of the shell 12 .
- the shell 12 also includes slotted extensions 66 for connecting headgear (not shown) to the mask.
- the mask 60 includes an opening 26 across which is extended a thin air permeable membrane 28 of identical construction to the ePTFE membrane discussed below in relation to the mask 40 shown in FIG. 6 .
- FIG. 4 shows a cross-section of vent assembly 110 .
- a membrane 114 interposed between an outer element 112 and an inner element 116 .
- This arrangement provides for a simple assembly.
- the inner element 116 may form part of the mask frame or of a separate insert to be positioned in an opening in the mask frame.
- FIG. 5 shows an alternative cross-section of a vent assembly 110 .
- a stainless steel membrane insert 118 positioned over the inner element 120 .
- the inner element 119 may form part of the mask frame or of a separate insert to be positioned in an opening in the mask frame.
- FIG. 6 shows a nasal respiratory mask 80 according to a sixth embodiment of the invention.
- the mask 80 is similar to the second embodiment of the mask 40 shown in FIG. 2 and like reference numerals have been used to indicate like features with respect to the second embodiment.
- the vent is provided in the gas inlet 20
- the vent is provided in the shell 12 .
- the mask 80 includes two cylindrical inserts 82 which have an inner opening 26 across which extends the thin air permeable material 28 .
- the thin air permeable material is made from GORE-TEX® product attached to a polypropylene scrim having an area of 481 mm.
- the membrane is constructed from expanded polytetrafluoroethylene (ePTFE).
- GORE-TEX® ePTFE product manufactured by W. L. Gore & Associates, Inc. of Md. USA (GORE-TEX® membrane) as being a suitable material for constructing a membrane.
- GORE-TEX® membrane has the following characteristics:
- FIG. 7 shows a seventh embodiment of a full-face respiratory mask 100 according to the invention.
- the mask 100 is similar to the mask 80 shown in FIG. 6 in that the vent is provided in the inserts 82 .
- the mask 100 uses slotted extensions 66 to attach mask restraining straps (not shown), not openings 42 .
- the insert 82 is comprises a cylindrical portion 86 sized to be a snug fit into a circular orifice 88 provided in the mask shell 12 .
- the insert 82 located against the outer surface of the shell 12 by a peripheral flange 90 .
- the inserts may be glued in position.
- FIG. 9 shows a further embodiment of the invention in which an in-line vent assembly is provided.
- the in-line vent assembly comprises a generally cylindrically shaped vent frame with “windows” or “ports” covered with a membrane as described above.
- the thin air permeable membrane of the present invention may be attached to the mask by any suitable means.
- the stainless steel vent described above may be attached to a polycarbonate mask shell by way of hot glue adhesive (for example) or any other suitable adhesive.
- hot glue adhesive for example
- the durability sought to be achieved will determine the suitable approach for attachment.
- a means to indicate the volume of air that has passed through the vent or alternatively the time that the vent assembly has been used.
- the indicator will signal that the vent assembly should be replaced.
- the thin air permeable membrane can be provided in an insert which is releasably attachable to the mask shell via a push-fit mechanism, as shown in FIG. 8 .
- a push-fit mechanism as shown in FIG. 8 .
- This approach will allow for the easy placement, removal and replacement of a vent insert while retaining the other components of the mask.
- the insert may be configured to take the form of any requisite shape preferably the insert has a circular circumferential shape defining a cylindrical insert which has a frictional fit within a corresponding circular orifice in the mask shell or gas inlet.
- Formation of the vent through use of an insert configuration facilitates the selection and fitting of a vent to suit a user's requirements.
- low flow occurs at low pressures and high flow occurs at high pressures. Therefore, a relatively large vent area may be adopted to facilitate achievement of the clinically desirable mask CO 2 washout rate.
- the previously selected vent may be exchanged for a vent that is more restrictive to flow. The more restrictive vent will allow achievement of the clinically desirable mask CO 2 washout rate while avoiding the intensity of noise and exhaust gas jetting that would occur had the previously selected low pressure vent been used with the higher treatment pressure.
- Locating the vent in the mask shell results in an improvement in the minimization of CO 2 retention within the mask compared to locating the vent as an inline mask component.
- another type of air permeable membrane may be used in the mask vents.
- a vent of a mesh material may be used as an air permeable membrane.
- One suitable type of mesh material includes a PTFE mesh sold by Spectrum Laboratories of Rancho Dominguez, Calif., USA under the name Fluorocarbon SPECTRA/MESH®.
- the SPECTRA/MESH® membrane has the following characteristics:
- Mesh pore size about 70-120 ⁇ m, preferably about 105 ⁇ m
- Open area about 25-35%, preferably about 32%
- Thickness about 120-180 ⁇ m, preferably about 155 ⁇ m
- the PTFE mesh is preferably hydrophobic and may be used in the same manner as described above with respect to FIGS. 2 and 6 for the ePTFE membrane.
- PTFE mesh may also be used in a number of other vent configurations.
- the PTFE mesh may be installed above an existing air vent or air restrictive element with essentially no gap between the PTFE mesh and the air vent.
- PTFE mesh may be installed above an air vent such as the MIRAGE® air vent described above and in International Patent Application No. WO 98/34665 incorporated herein by reference in its entirety. In this configuration, the air vent would cause the majority of the pressure drop between the inside of the mask and the outside of the mask and the PTFE mesh would act to diffuse the air leaving the vent and reduce noise.
- PTFE mesh may be installed above an air vent with a small gap (e.g., 0.5-1 mm) between the vent and the PTFE mesh, such that the gap would help to diffuse the escaping air over a larger area of the mesh.
- PTFE mesh configurations described above one or several layers of PTFE mesh may be used. If multiple layers of PTFE mesh are used, the airflow restriction created by the mesh would be increased.
- the PTFE mesh may be provided in the form of a disposable insert, similar to the inserts 82 of FIGS. 6-8 .
- FIGS. 10-16 illustrate a further embodiment of the invention in which the mesh material of the vent takes the form of a porous fabric, e.g., in the form of a loose weave 100 .
- the weave 100 includes a plurality of fibers 102 , at least some of which are made from an auxetic material meaning the fibers have a negative Poisson's Ratio (less than zero, although higher negative values are preferable) and/or a low Young's Modulus, e.g., in the range of 0.01 to 10 or higher.
- the Young's Modulus (YM) is less than 10 , and even more preferably, the YM is in the range of about 0.1.
- auxetic materials examples include polymers such as polyimides (YM: 3-5), polyesters (YM: 1-5), nylon (YM: 2-4); polystyrene (YM: 3-3.4); polyethylenes (YM: 0.2-0.7); and/or rubbers (YM: 0.01-0.1).
- An auxetic material will thicken upon the application of a tensile force F to the fibers, such that the diameter d in FIG. 11A increases to diameter D in FIG. 11B .
- the following Internet links describe the theory and operation of auxetic materials:
- FIGS. 12A and 12B show a mask 104 having a vent 106 in the form of a loose weave, as described above.
- the vent 106 may include a frame 108 that is inserted into an aperture of the mask shell 110 .
- the mask 104 is subject to the lower pressure range, in which case the weave is substantially planar, or slightly bulging.
- FIG. 12B when the mask is subject to the higher pressure range, the loose weave bulges out, in which case the auxetic fibers 102 assume the stretched condition and the diameter of the fibers increases, as explained above in relation to FIGS. 11A and 11B .
- the effective surface area of the loose weave is increased under higher pressures.
- the diameter of the fibers increases with stretching. Therefore, the spacing between the fibers (defining the open area) may remain constant, increase or decrease, depending on the desired open area between the fibers. Of course, the fibers may increase in diameter even if there is no bulging.
- FIG. 13 plots Flow or flow rate (L/min) over Pressure (cmH 2 O).
- the solid line represents a vent according to an embodiment using an auxetic material, e.g., a loose weave, with auxetic fibers.
- the flow remains relatively constant (in the ideal scenario), or rises very slowly to allow increased CO 2 washout, as pressure increases.
- the flow of a prior art vent increases relatively more readily, e.g., in linear fashion, with pressure increases.
- FIG. 14 plots the open area (mm 2 ), i.e., the openings between the auxetic fibers, as pressure rises.
- the open area is in the range of 60-90 mm 2 , preferably about 75 mm 2 .
- the open area gradually decreases with pressure increases, to avoid unnecessarily high CO 2 washout.
- the open area could be designed to increase as well. In prior art masks having static or fixed holes, the open area remains constant.
- the shape of the vent 106 may be symmetrical about at least one axis as shown in FIGS. 12A-12B .
- the shape of the vent may be fully non-symmetrical, or it may be symmetrical about more than one axis, e.g., a round vent that bulges into the shape of a hemisphere or a portion of a hemisphere.
- FIGS. 15 and 16 show variations of the auxetic fiber vent.
- FIG. 15 shows a balloon-shaped vent 200
- FIGS. 16 shows a cylindrical-shaped vent 202 .
- These embodiments involve increased allowable expansion, i.e., stretch, which may increase or otherwise vary vent flow.
- the fibers in the areas of increased stretch have a larger diameter than the diameter of fibers in the areas that are stretched relatively less.
- FIG. 17 shows yet another variation of a vent using an auxetic material.
- the vent 300 includes a first portion 302 made of non-porous material and a second portion 304 made of auxetic material.
- the first portion acts as a “sail” to thereby enhance the stretching force applied to the auxetic material.
- Second portion 304 may be attached to a mask frame 306 .
- the sail portion 304 in FIG. 17 may take other forms.
- the sail portion 306 may be in the form of a polycarbonate cut out 308 that is attached to the remainder of the mask frame 310 using auxetic material 312 , as shown in FIG. 18 .
- the cutout 308 acts to vary the stretchy force applied to the auxetic material, is dependence of the prevailing mask pressure.
- auxetic materials in the form of a mesh or loose weave
- the auxetic materials may take other forms.
- the auxetic material could include a sheet of auxetic material having one or more slits and/or perforations.
Abstract
A vent assembly for use with a respiratory mask of the type used in CPAP treatment. In one embodiment, the vent is made of a thin air permeable membrane. The membrane can be made of a hydrophobic material such as expanded polytetrafluoroethylene (PTFE). An expanded PTFE membrane is mounted on a polypropylene scrim. The pores of the ePTFE membrane have a reference pore size of 10 to 15 microns. Alternatively, the vent assembly includes a stainless steel vent having holes with diameters less than about 0.2 mm. In another embodiment, the membrane has a superficial cross-sectional area of approximately 500 mm2. In further embodiments, a vent of a mesh material, e.g., an auxetic vent or a PTFE mesh, may be used as an air permeable membrane, either alone or in combination with a traditional vent structure.
Description
- This application claims the benefit of U.S. Provisional Application No. 60/640,184, filed Dec. 30, 2004, incorporated herein by reference in its entirety.
- U.S. patent application Ser. No. 10/976,874, filed Nov. 1, 2004, pending, which is a continuation of U.S. patent application Ser. No. 10/377,110, filed Mar. 3, 2003, now U.S. Pat. No. 6,823,865, which is a continuation of U.S. patent application Ser. No. 09/570,907, filed on May 15, 2000, now U.S. Pat. No. 6,581,594, are incorporated herein by reference in their entireties.
- The present invention relates to a respiratory mask and a vent for a respiratory mask.
- The application of Continuous Positive Airway Pressure (CPAP) via a nasal mask is a common ameliorative treatment for sleep disordered breathing (SDB) including obstructive sleep apnea (OSA) as described in commonly-assigned U.S. Pat. No. 4,944,310, incorporated herein by reference in its entirety. In CPAP treatment for OSA, air or other breathable gas is supplied to the entrance of a patient's airways at a pressure elevated above atmospheric pressure, typically in the range 3-20 cm H2O, as measured in the patient interface. It is also known for the level of treatment pressure to vary during a period of treatment in accordance with patient need, that form of CPAP being known as automatically adjusting nasal CPAP treatment, as described in commonly-assigned U.S. Pat. No. 5,245,995, incorporated herein by reference in its entirety.
- Non-invasive positive pressure ventilation (NIPPY) is another form of treatment for breathing disorders including sleep disordered breathing. In a basic form NIPPV involves a relatively high pressure of gas being provided in the patient interface during the inspiratory phase of respiration and a relatively low pressure or atmospheric pressure being provided in the patient interface during the expiratory phase of respiration. In other NIPPV modes the pressure can be made to vary in a complex manner throughout the respiratory cycle. For example, the pressure at the patient interface during inspiration or expiration can be varied through the period of treatment as disclosed in the commonly-assigned International PCT Patent Application No. WO 98/12965 and International PCT Patent Application No. WO 99/61088, both incorporated herein by reference in their entireties.
- In this specification any reference to CPAP treatment is to be understood as embracing all of the above-described forms of ventilatory treatment or assistance.
- Typically, the patient interface for CPAP treatment includes a nasal mask. The nasal mask is generally defined by a mask shell which forms an inner cavity defined by its interior surface, mask cushion and the user's face, a gas inlet which may or may not include a separate component such as a swivel elbow. Alternatively, a nose-mouth mask or full-face mask or nasal prongs or nasal pillows can be used. In this specification any reference to a mask is to be understood as incorporating a reference to a nasal mask, nose-mouth mask, full face mask, nasal prongs or nasal pillows unless otherwise specifically indicated. The mask incorporates, or has in close proximity, a gas washout vent for venting exhaled gases to atmosphere. The gas washout vent (the vent) is sometimes referred to as a CO2 washout vent.
- It is important that the apparatus is quiet and comfortable to encourage patient compliance with therapy. The exhausting to atmosphere of exhaled gas through the vent creates noise. As CPAP and NIPPV treatments are normally administered while the patient is sleeping, minimization of such noise is desirable for both the comfort of the patient and any bed partner. It is also desirable to minimize the exhaust gas jet by diffusing the air flow, in order to avoid any further disturbance or noise which may be caused by the exhaust gas jet hitting bedding or other obstacles.
- From a clinical perspective it is desirable for a mask and vent combination to maximize both the elimination of exhaled CO2 through the vent and also the inhalation of the supplied breathable gas. In this way, retention of exhaled CO2 within the mask, which is “rebreathed” by the wearer, is minimized. Generally by locating the vent in the mask shell, CO2 washout will be superior to locating the same vent between the mask shell and the breathable gas supply conduit.
- It is desirable to minimize the weight of the vent assembly for greater patient comfort.
- Systems for the delivery of nasal CPAP treatment often incorporate in-line humidifiers to minimize drying of the nasal mucosa and increase patient comfort. Accordingly, it is also desirable that a vent not block when used with humidified gas. It is also desirable that a vent be easily cleaned or economically disposable.
- A number of vent configurations are known. One approach to vent configuration is to create within the mask shell one or more openings that allow for the flow of exhaust gas from the inner cavity to atmosphere. The exhaust flow may be directed through the incorporation of an additional pipe extending out from the opening located on the mask shell outer surface.
- The Assignee's nasal mask system known by the name “ResMed Modular Mask System” incorporates an outlet vent located in the swivel elbow connected to the mask shell. The ports defining the vent have the same cross-sectional thickness and are formed from the same polycarbonate material that is used to form the swivel elbow and mask shell frame.
- The whisper swivel, manufactured by Respironics, Inc., provides three slots on the circumference of a generally cylindrical attachment piece. In use, the attachment piece is to be interposed between the mask shell and the gas conduit. The attachment piece is made of the same material and thickness as is used to make the mask shell.
- European Patent No. 0 697 225, which is incorporated herein by reference in its entirety, discloses a vent formed from a porous sintered material.
- A known vent, manufactured by Gottleib Weinmann Gerate Fur Medizin Und Arbeitsschutz GmbH and Co., comprises a generally cylindrical insert to be interposed, in use, between the mask shell and the gas conduit. The insert includes a window which is covered with a porous sintered material of approximately 3-4 mm thickness.
- Another type of vent intended to be inserted between the mask shell and the breathable gas supply conduit is the E-Vent N by Draeger Medizintechnik GmbH (the Draeger vent). The Draeger vent comprises a stack of 21 annular disks that have slots in their adjacent surfaces for gas to flow therethrough. Each slot has a length of 5 to 7 mm, as measured along the path from the interior of the vent to atmosphere.
- The Assignee produces a respiratory mask known as the MIRAGE® nasal mask system and the MIRAGE® full-face mask (the MIRAGE® mask). The MIRAGE® mask has a crescent shaped opening in the mask shell in which is located a complementary shaped crescent elastometric insert with six holes therein which constitutes the vent. The elastomeric inset has a cross-sectional thickness of 3 to 4 mm. The vent of the type used in the MIRAGE® is described in International Patent Application No. WO 98/34665 and Australian Patent No. 712236, both of which are incorporated herein in their entireties.
- It is an aspect of the present invention to provide an alternative form of vent that is suitable for use in a respiratory mask.
- One aspect of the present invention provides a vent assembly suitable for use with a mask used in CPAP treatment wherein the vent assembly is a thin air permeable membrane.
- In one form of the invention, the membrane is thinner than the mask frame.
- In another form of the invention, the membrane is thinner than 0.5 mm.
- In another form of the invention the membrane has an approximate thickness of 0.05 mm.
- In another form of the invention the membrane is constructed from a hydrophobic material such as polytetrafluoroethylene (PTFE).
- In embodiments, the membrane may comprise a mesh material, such as a porous fabric or a PTFE mesh. The mesh material may be capable of thickening upon stretching, e.g., by use of an auxetic material including auxetic fibers. The fibers may have negative Poisson's Ratio, as well as low Young's Modulus (to enable easy stretching). The auxetic material can be in the form of sheet material having one or more perforations and/or slits, instead of a mesh.
- In another form of the invention the membrane is constructed from expanded PTFE.
- In another form of the invention the expanded PTFE membrane is mounted on a polypropylene scrim.
- In another form, the pores of the membrane have a reference pore size of 10 to 15 microns.
- In another form of the invention the membrane is constructed from stainless steel. The stainless steel sheet has a thickness of approximately 0.45 mm and a number of holes, each hole having a diameter of approximately 0.1 mm. The total open area of such a stainless steel membrane is approximately 5%.
- In another form of the invention the membrane of the vent has a superficial cross-sectional area of approximately 500 mm2.
- In another form of the invention the vent assembly comprises a membrane attached to a vent frame, the vent assembly forming an insert which can be remove ably attached to a mask frame.
- In another form of the invention there is provided a respiratory mask for communicating breathable gas to the entrance of a wearer's airways, the mask including (i) mask shell, (ii) a gas inlet and (iii) an opening into which an insert constructed from a thin air permeable membrane with a corresponding shape may be placed. The opening may be positioned in the mask shell or in the gas inlet.
- In one form, the mask includes a mask shell with an integrally formed gas inlet and the opening is provided in the mask shell remote the inlet. In another form, the mask includes a mask shell with an integrally formed gas inlet and the opening is provided in the gas inlet. In yet another form, the mask includes a mask shell with a separately formed gas inlet attached thereto and the opening is provided in the mask shell remote the inlet. In still yet another form, the mask includes a mask shell with a separately formed gas inlet attached thereto and the opening is provided in the gas inlet.
- Another aspect of the present invention provides a respiratory mask arrangement for communicating breathable gas to the entrance of a wearer's airways, the mask arrangement including a vent assembly comprising an opening with a thin air permeable membrane extending across an opening.
- In further aspects, the present invention provides an apparatus for delivering CPAP, which apparatus includes a mask arrangement for communicating breathable gas to the entrance of a wearer's airways, the mask arrangement including a gas washout vent assembly comprising an opening with a thin air permeable membrane extending across said opening.
- These and other aspects will be described in or apparent from the following detailed description of preferred embodiments.
- The present invention will be described with reference to the following drawings, in which like numerals represent like structures throughout the several views, and in which:
-
FIG. 1 is a perspective view of a respiratory mask according to a first embodiment of the invention; -
FIG. 2 is a perspective view of a respiratory mask according to a second embodiment of the invention; -
FIG. 3 is a perspective view of a respiratory mask according to a third embodiment of the invention; -
FIG. 4 is a partial cross-sectional view of a vent assembly according to a fourth embodiment of the invention; -
FIG. 5 is a partial cross-sectional view of a vent assembly according to a fifth embodiment the invention; -
FIG. 6 is a perspective view of a respiratory mask according to sixth embodiment of the invention; -
FIG. 7 is a perspective view of a full-face mask according to a seventh embodiment of the invention; -
FIG. 8 is an enlarged detailed view of an insert suitable for use with the masks shown inFIG. 6 andFIG. 7 ; -
FIG. 9 is a perspective view of a vent assembly according to an eighth embodiment of the invention where the thin air permeable membrane is located in a cylindrical position on a tube suitable for attachment to the mask elbow; -
FIGS. 10-16 describe alternative embodiments of the present invention in which auxetic fibers are used in conjunction with the vent assembly; -
FIG. 17 illustrates a vent according to yet another embodiment of the present invention; and -
FIG. 18 is a mask with a vent according to still another embodiment of the present invention. -
FIG. 1 shows a patient interface, e.g., a nasalrespiratory mask 10, according to a first embodiment of the invention. Themask 10 includes a rigidplastic mask shell 12 that has aperipheral flange 14 for mounting of a cushion (not shown) to theshell 12. The cushion abuts the wearer's face in use and is well known in the art. Theflange 14 includesslots 15 for the connection of mask restraining straps (not shown) that extend around the head of the wearer to maintain themask 10 adjacent to the wearer's face. The straps are also known in the art. Theshell 12 also includes anarm 16, which terminates in a fitting 18 that is adapted to connect to a forehead support (not shown), which is also known in the art. - The
mask shell 12 includes abreathable gas inlet 20 which is rotatably mounted to theshell 12. Theinlet 20 has afirst end 22 which is adapted for connection with a breathable gas supply conduit (not shown) and asecond end 24 which is adapted to connect to, and communicate the supplied gas to the interior of theshell 12 for subsequent communication with the wearer's airways. - The
mask 10 includes a gas washout vent constituted by anopening 26 in theshell 12 across which extends a thin airpermeable membrane 28. - In the
FIG. 1 embodiment, the thin airpermeable membrane 28 is a stainless steel sheet approximately 0.45 mm thick having holes with a diameter approximately 0.1 mm in diameter. The total open area is approximately 5% of the total superficial surface area of the sheet. The dimensions of the sheet are approximately 322 mm2. The holes are, e.g., laser cut into the stainless steel. The holes are desirably laser cut or flame cut through the stainless steel, and in general, have a diameter less than about 0.2 mm. - Preferably the holes have a diameter of less than 0.2 mm, and preferably provide a total open area of approximately 1% to 25% of the superficial surface area of the steel. The holes may be tapered (in a gradual or stepped manner) through their internal bore. In use, if the larger end of the vent's openings are located on the atmosphere side of the vent, the opportunity for blockage occurring by the insertion of particulate matter will be minimized, because larger particles may not be able to enter the smaller end of the vent's openings on the inside of the vent. Alternatively, the smaller end of the vent's openings may be located on the atmosphere side, which may make the vent quieter.
- In another example, the membrane includes a plurality of holes each having a diameter in the range of about 0.1-0.3 mm, with an open area ranging from 5 to 60%, and sufficient area (i.e., number of holes) to provide adequate flow at low pressures such as 4 cmH2O to meet the requirements to flush CO2. A preferred embodiment of this invention is a mask shell that has a thickness of 0.45 mm, holes with a diameter of 0.1 mm that are drilled, molded, laser cut or otherwise constructed therethrough, an open area of about 5% in the region containing the holes, and a total area of the vent of about 300-400 mm2, preferably about 320-330 mm2, and more preferably about 322 mm2. Preferably, the holes are tapered such that the diameter at the exterior of the mask is marginally smaller than that at the interior of the mask.
-
FIG. 2 shows a nasalrespiratory mask 40 according to a second embodiment of the invention. Like reference numerals to those used in describing the first embodiment will be used to denote like features in respect of the second embodiment. Accordingly, themask 40 has ashell 12 with agas inlet 20. Instead of theslots 15 of the first embodiment the mask shell includesopenings 42 which are adapted to snap engage with connection fittings (not shown) provided on the end of mask restraining straps (not shown). Further, instead of thearm 16 and fitting 18, themask 40 includes an adjustable forehead support mechanism indicated generally by thereference numeral 44. - The
mask 40 also includes a vent constituted by anopening 26 formed in thegas inlet 20 across which extends a thin airpermeable membrane 28. -
FIG. 3 shows amask 60 according to a third embodiment of the present invention. Although this particular embodiment is directed to a nasal mask, it should noted that various vent arrangements can be used with various mask arrangements. Once again like reference numerals to those used in describing features of the first embodiment shall be used to denote like features in respect of the third embodiment. Themask 60 includes amask shell 12 with an integrally formed fixedgas inlet 62. Acushion 64 is attached to the peripheral flange 14 (FIG. 2 ) of theshell 12. Theshell 12 also includes slottedextensions 66 for connecting headgear (not shown) to the mask. Themask 60 includes anopening 26 across which is extended a thin airpermeable membrane 28 of identical construction to the ePTFE membrane discussed below in relation to themask 40 shown inFIG. 6 . -
FIG. 4 shows a cross-section ofvent assembly 110. There is provided amembrane 114 interposed between anouter element 112 and aninner element 116. This arrangement provides for a simple assembly. There is acorresponding opening 115 in theouter element 112 andinner element 116 to allow for the passage of air through the membrane. Theinner element 116 may form part of the mask frame or of a separate insert to be positioned in an opening in the mask frame. -
FIG. 5 shows an alternative cross-section of avent assembly 110. There is provided a stainlesssteel membrane insert 118 positioned over theinner element 120. There is anopening 119 in theinner element 120 to allow for the passage of air through the membrane. Theinner element 119 may form part of the mask frame or of a separate insert to be positioned in an opening in the mask frame. -
FIG. 6 shows a nasalrespiratory mask 80 according to a sixth embodiment of the invention. Themask 80 is similar to the second embodiment of themask 40 shown inFIG. 2 and like reference numerals have been used to indicate like features with respect to the second embodiment. In themask 40 ofFIG. 2 , the vent is provided in thegas inlet 20, whereas in themask 80 the vent is provided in theshell 12. More particularly, themask 80 includes twocylindrical inserts 82 which have aninner opening 26 across which extends the thin airpermeable material 28. The thin air permeable material is made from GORE-TEX® product attached to a polypropylene scrim having an area of 481 mm. The membrane is constructed from expanded polytetrafluoroethylene (ePTFE). The inventors have identified GORE-TEX® ePTFE product manufactured by W. L. Gore & Associates, Inc. of Md. USA (GORE-TEX® membrane) as being a suitable material for constructing a membrane. hi one preferred form, the GORE-TEX® membrane has the following characteristics: -
Membrane material 100% expanded polytetrafluoroethylene - Reference pore size 10-15 micron
- Bubble Point typical minimum individual 0.02 bar
- Airflow 0.37 LPM/cm2
- Thickness 0.05 mm
- Substrate polypropylene scrim
-
FIG. 7 shows a seventh embodiment of a full-facerespiratory mask 100 according to the invention. Once again like reference numerals to those used in denoting like features with previous embodiments have been used to denote like features in respect of this embodiment. Themask 100 is similar to themask 80 shown inFIG. 6 in that the vent is provided in theinserts 82. However themask 100 uses slottedextensions 66 to attach mask restraining straps (not shown), notopenings 42. - As best seen in
FIG. 8 , which is a close-up view of the insert shown inFIG. 6 , theinsert 82 is comprises acylindrical portion 86 sized to be a snug fit into acircular orifice 88 provided in themask shell 12. Theinsert 82 located against the outer surface of theshell 12 by aperipheral flange 90. The inserts may be glued in position. -
FIG. 9 shows a further embodiment of the invention in which an in-line vent assembly is provided. Like numerals are used to indicate like features with previous embodiments. In this embodiment, the in-line vent assembly comprises a generally cylindrically shaped vent frame with “windows” or “ports” covered with a membrane as described above. - The thin air permeable membrane of the present invention may be attached to the mask by any suitable means. For example the stainless steel vent described above may be attached to a polycarbonate mask shell by way of hot glue adhesive (for example) or any other suitable adhesive. The durability sought to be achieved will determine the suitable approach for attachment.
- In a farther embodiment there is provided a means to indicate the volume of air that has passed through the vent, or alternatively the time that the vent assembly has been used. When a sufficient volume of air has passed through the vent assembly, or the assembly has been used for a sufficient time and may have become blocked, the indicator will signal that the vent assembly should be replaced.
- For convenience, the thin air permeable membrane can be provided in an insert which is releasably attachable to the mask shell via a push-fit mechanism, as shown in
FIG. 8 . Preferably on at least the outer surface of the insert there is provided at least one cross-piece that protects the air permeable membrane from being damaged as it is located into the receiving orifice of the mask shell. This approach will allow for the easy placement, removal and replacement of a vent insert while retaining the other components of the mask. While the insert may be configured to take the form of any requisite shape preferably the insert has a circular circumferential shape defining a cylindrical insert which has a frictional fit within a corresponding circular orifice in the mask shell or gas inlet. - Formation of the vent through use of an insert configuration facilitates the selection and fitting of a vent to suit a user's requirements. For a fixed orifice vent, low flow occurs at low pressures and high flow occurs at high pressures. Therefore, a relatively large vent area may be adopted to facilitate achievement of the clinically desirable mask CO2 washout rate. Should a higher treatment pressure be required then the previously selected vent may be exchanged for a vent that is more restrictive to flow. The more restrictive vent will allow achievement of the clinically desirable mask CO2 washout rate while avoiding the intensity of noise and exhaust gas jetting that would occur had the previously selected low pressure vent been used with the higher treatment pressure.
- Locating the vent in the mask shell results in an improvement in the minimization of CO2 retention within the mask compared to locating the vent as an inline mask component.
- In other further embodiments of the invention, another type of air permeable membrane may be used in the mask vents. Instead of the ePTFE membrane described above, a vent of a mesh material may be used as an air permeable membrane. One suitable type of mesh material includes a PTFE mesh sold by Spectrum Laboratories of Rancho Dominguez, Calif., USA under the name Fluorocarbon SPECTRA/MESH®. In one preferred form, the SPECTRA/MESH® membrane has the following characteristics:
- Membrane material Primarily if not 100% polytetrafluoroethylene mesh
- Mesh pore size about 70-120 μm, preferably about 105 μm
- Open area about 25-35%, preferably about 32%
- Thickness about 120-180 μm, preferably about 155 μm
- The PTFE mesh is preferably hydrophobic and may be used in the same manner as described above with respect to
FIGS. 2 and 6 for the ePTFE membrane. - PTFE mesh may also be used in a number of other vent configurations. For example, the PTFE mesh may be installed above an existing air vent or air restrictive element with essentially no gap between the PTFE mesh and the air vent. For example, PTFE mesh may be installed above an air vent such as the MIRAGE® air vent described above and in International Patent Application No. WO 98/34665 incorporated herein by reference in its entirety. In this configuration, the air vent would cause the majority of the pressure drop between the inside of the mask and the outside of the mask and the PTFE mesh would act to diffuse the air leaving the vent and reduce noise. Alternatively, PTFE mesh may be installed above an air vent with a small gap (e.g., 0.5-1 mm) between the vent and the PTFE mesh, such that the gap would help to diffuse the escaping air over a larger area of the mesh.
- In any of the PTFE mesh configurations described above, one or several layers of PTFE mesh may be used. If multiple layers of PTFE mesh are used, the airflow restriction created by the mesh would be increased.
- The PTFE mesh may be provided in the form of a disposable insert, similar to the
inserts 82 ofFIGS. 6-8 . -
FIGS. 10-16 illustrate a further embodiment of the invention in which the mesh material of the vent takes the form of a porous fabric, e.g., in the form of aloose weave 100. Theweave 100 includes a plurality offibers 102, at least some of which are made from an auxetic material meaning the fibers have a negative Poisson's Ratio (less than zero, although higher negative values are preferable) and/or a low Young's Modulus, e.g., in the range of 0.01 to 10 or higher. Preferably, the Young's Modulus (YM) is less than 10, and even more preferably, the YM is in the range of about 0.1. Examples include polymers such as polyimides (YM: 3-5), polyesters (YM: 1-5), nylon (YM: 2-4); polystyrene (YM: 3-3.4); polyethylenes (YM: 0.2-0.7); and/or rubbers (YM: 0.01-0.1). An auxetic material will thicken upon the application of a tensile force F to the fibers, such that the diameter d inFIG. 11A increases to diameter D inFIG. 11B . The following Internet links describe the theory and operation of auxetic materials: - http://www.azom.com/details.asp?ArticleID=167;
http://www.bolton.ac.uk/research/materials/pdf/c&i-review.pdf; and
http://www-moratti.ch.cam.ac.uk/projects/auxetics.html. -
FIGS. 12A and 12B show amask 104 having avent 106 in the form of a loose weave, as described above. Thevent 106 may include aframe 108 that is inserted into an aperture of themask shell 110. InFIG. 12A , themask 104 is subject to the lower pressure range, in which case the weave is substantially planar, or slightly bulging. InFIG. 12B , when the mask is subject to the higher pressure range, the loose weave bulges out, in which case theauxetic fibers 102 assume the stretched condition and the diameter of the fibers increases, as explained above in relation toFIGS. 11A and 11B . In this situation, the effective surface area of the loose weave is increased under higher pressures. However, the diameter of the fibers increases with stretching. Therefore, the spacing between the fibers (defining the open area) may remain constant, increase or decrease, depending on the desired open area between the fibers. Of course, the fibers may increase in diameter even if there is no bulging. -
FIG. 13 plots Flow or flow rate (L/min) over Pressure (cmH2O). The solid line represents a vent according to an embodiment using an auxetic material, e.g., a loose weave, with auxetic fibers. The flow remains relatively constant (in the ideal scenario), or rises very slowly to allow increased CO2 washout, as pressure increases. By contrast, the flow of a prior art vent increases relatively more readily, e.g., in linear fashion, with pressure increases. -
FIG. 14 plots the open area (mm2), i.e., the openings between the auxetic fibers, as pressure rises. Preferably, the open area is in the range of 60-90 mm2, preferably about 75 mm2. Ideally, the open area gradually decreases with pressure increases, to avoid unnecessarily high CO2 washout. Of course, the open area could be designed to increase as well. In prior art masks having static or fixed holes, the open area remains constant. - The shape of the
vent 106 may be symmetrical about at least one axis as shown inFIGS. 12A-12B . However, the shape of the vent may be fully non-symmetrical, or it may be symmetrical about more than one axis, e.g., a round vent that bulges into the shape of a hemisphere or a portion of a hemisphere. -
FIGS. 15 and 16 show variations of the auxetic fiber vent.FIG. 15 shows a balloon-shapedvent 200, whileFIGS. 16 shows a cylindrical-shapedvent 202. These embodiments involve increased allowable expansion, i.e., stretch, which may increase or otherwise vary vent flow. InFIGS. 15 and 16 , the fibers in the areas of increased stretch have a larger diameter than the diameter of fibers in the areas that are stretched relatively less. -
FIG. 17 shows yet another variation of a vent using an auxetic material. Thevent 300 includes afirst portion 302 made of non-porous material and asecond portion 304 made of auxetic material. The first portion acts as a “sail” to thereby enhance the stretching force applied to the auxetic material. The sail force equals mask pressure times the area (F=P×A) of the first portion.Second portion 304 may be attached to amask frame 306. - The
sail portion 304 inFIG. 17 may take other forms. For example, thesail portion 306 may be in the form of a polycarbonate cut out 308 that is attached to the remainder of themask frame 310 usingauxetic material 312, as shown inFIG. 18 . Thecutout 308 acts to vary the stretchy force applied to the auxetic material, is dependence of the prevailing mask pressure. - While the embodiments of
FIGS. 10-18 have been deserted in relation to auxetic materials in the form of a mesh or loose weave, it should be noted that the auxetic materials may take other forms. For example, the auxetic material could include a sheet of auxetic material having one or more slits and/or perforations. - Although the invention has been described with reference to specific examples, it is to be understood that these examples are merely illustrative of the application of the principles of the invention. Thus it is to be understood that numerous modifications may be made in the illustrative examples of the invention and other arrangements may be devised without departing from the spirit and scope of the invention.
Claims (1)
1. A respiratory mask comprising:
a patient interface having a cushion that at least in part defines a breathing cavity; and
a gas washout vent comprising a thin air permeable membrane formed, constructed and arranged to allow gas to exit from the breathing cavity,
wherein the membrane comprises a mesh material.
Priority Applications (1)
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US15/251,568 US20160367782A1 (en) | 2000-05-15 | 2016-08-30 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
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Application Number | Priority Date | Filing Date | Title |
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US09/570,907 US6581594B1 (en) | 2000-05-15 | 2000-05-15 | Respiratory mask having gas washout vent and gas washout vent for respiratory mask |
US10/377,110 US6823865B2 (en) | 2000-05-15 | 2003-03-03 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
US10/976,874 US7159587B2 (en) | 2000-05-15 | 2004-11-01 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
US64018404P | 2004-12-30 | 2004-12-30 | |
PCT/AU2005/001941 WO2006069415A1 (en) | 2004-12-30 | 2005-12-22 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
US79294208A | 2008-10-28 | 2008-10-28 | |
US15/251,568 US20160367782A1 (en) | 2000-05-15 | 2016-08-30 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
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US11/792,942 Continuation US20100154798A1 (en) | 2004-12-30 | 2005-12-22 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
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US09/570,907 Expired - Lifetime US6581594B1 (en) | 2000-05-15 | 2000-05-15 | Respiratory mask having gas washout vent and gas washout vent for respiratory mask |
US10/377,110 Expired - Lifetime US6823865B2 (en) | 2000-05-15 | 2003-03-03 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
US10/976,874 Expired - Lifetime US7159587B2 (en) | 2000-05-15 | 2004-11-01 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
US11/413,080 Expired - Fee Related US7926487B2 (en) | 2000-05-15 | 2006-04-28 | Respiratory mask having gas washout vent and gas washout vent assembly for a respiratory mask |
US13/064,266 Expired - Fee Related US8528558B2 (en) | 2000-05-15 | 2011-03-15 | Respiratory mask having washout vent and gas washout vent assembly for a respiratory mask |
US13/975,601 Abandoned US20130340761A1 (en) | 2000-05-15 | 2013-08-26 | Respiratory mask having gas washout vent and gas washout vent assembly for a respiratory mask |
US15/251,568 Abandoned US20160367782A1 (en) | 2000-05-15 | 2016-08-30 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
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US09/570,907 Expired - Lifetime US6581594B1 (en) | 2000-05-15 | 2000-05-15 | Respiratory mask having gas washout vent and gas washout vent for respiratory mask |
US10/377,110 Expired - Lifetime US6823865B2 (en) | 2000-05-15 | 2003-03-03 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
US10/976,874 Expired - Lifetime US7159587B2 (en) | 2000-05-15 | 2004-11-01 | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
US11/413,080 Expired - Fee Related US7926487B2 (en) | 2000-05-15 | 2006-04-28 | Respiratory mask having gas washout vent and gas washout vent assembly for a respiratory mask |
US13/064,266 Expired - Fee Related US8528558B2 (en) | 2000-05-15 | 2011-03-15 | Respiratory mask having washout vent and gas washout vent assembly for a respiratory mask |
US13/975,601 Abandoned US20130340761A1 (en) | 2000-05-15 | 2013-08-26 | Respiratory mask having gas washout vent and gas washout vent assembly for a respiratory mask |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020170207A1 (en) * | 2019-02-22 | 2020-08-27 | ResMed Pty Ltd | Textile vent assembly |
WO2022050852A1 (en) * | 2020-09-04 | 2022-03-10 | Fisher & Paykel Healthcare Limited | Patient interface for delivery of gas |
Families Citing this family (313)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPQ104099A0 (en) | 1999-06-18 | 1999-07-08 | Resmed Limited | Forehead support for facial mask |
US6561191B1 (en) * | 1997-02-10 | 2003-05-13 | Resmed Limited | Mask and a vent assembly therefor |
AUPO504597A0 (en) | 1997-02-10 | 1997-03-06 | Resmed Limited | A mask and a vent assembly therefor |
US6581594B1 (en) * | 2000-05-15 | 2003-06-24 | Resmed Limited | Respiratory mask having gas washout vent and gas washout vent for respiratory mask |
WO2006069415A1 (en) * | 2004-12-30 | 2006-07-06 | Resmed Limited | Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask |
AU2001267947B2 (en) * | 2000-06-14 | 2004-01-15 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
JP4818569B2 (en) | 2000-12-22 | 2011-11-16 | レスメド・リミテッド | mask |
AUPR315401A0 (en) * | 2001-02-16 | 2001-03-15 | Resmed Limited | An apparatus for supplying clean breathable gas |
EP1302212A3 (en) * | 2001-10-10 | 2004-01-21 | Fisher & Paykel Healthcare Limited | Forehead support for a facial mask |
US6892729B2 (en) * | 2001-11-20 | 2005-05-17 | Fisher & Paykel Healthcare Limited | Patient interfaces |
AUPS192602A0 (en) | 2002-04-23 | 2002-05-30 | Resmed Limited | Nasal mask |
US8997742B2 (en) | 2002-04-23 | 2015-04-07 | Resmed Limited | Ergonomic and adjustable respiratory mask assembly with cushion |
US7156096B2 (en) * | 2002-07-15 | 2007-01-02 | Landis Robert M | Dynamic infant nasal CPAP system and method |
USD485905S1 (en) | 2002-08-09 | 2004-01-27 | Resmed Limited | Nasal mask |
US7814911B2 (en) * | 2004-10-15 | 2010-10-19 | Aeiomed, Inc. | Nares seal |
NZ573226A (en) | 2002-09-06 | 2010-07-30 | Resmed Ltd | Elbow for respiratory mask assembly |
AU2013211476B2 (en) * | 2002-09-06 | 2015-04-09 | Resmed Limited | Headgear Connection Assembly for a Respiratory Mask Assembly |
EP2913079B1 (en) | 2002-09-06 | 2017-10-25 | ResMed Limited | Cushion for respiratory mask assembly |
EP1545676A1 (en) * | 2002-09-18 | 2005-06-29 | Unomedical A/S | A pressure reducing device |
DE10246268B4 (en) * | 2002-10-02 | 2004-11-18 | Pwb-Ruhlatec Industrieprodukte Gmbh | encoder arrangement |
NZ591788A (en) | 2002-11-06 | 2012-10-26 | Resmed Ltd | Layered mask cushion assembly |
USD567935S1 (en) | 2002-11-08 | 2008-04-29 | Resmed Limited | Portion of forehead pad |
EP3108919B1 (en) | 2002-12-06 | 2020-09-09 | Fisher & Paykel Healthcare Limited | System for delivery of pressurized gases |
NZ562412A (en) | 2003-02-21 | 2009-02-28 | Resmed Ltd | Nasal assembly for pillow mask |
US7219670B2 (en) * | 2003-02-28 | 2007-05-22 | Sunrise Medical Hhg Inc. | Method for securing a nasal mask |
US7559326B2 (en) | 2003-06-18 | 2009-07-14 | Resmed Limited | Vent and/or diverter assembly for use in breathing apparatus |
US8381729B2 (en) | 2003-06-18 | 2013-02-26 | Breathe Technologies, Inc. | Methods and devices for minimally invasive respiratory support |
US7588033B2 (en) | 2003-06-18 | 2009-09-15 | Breathe Technologies, Inc. | Methods, systems and devices for improving ventilation in a lung area |
EP3173117B1 (en) | 2003-07-09 | 2019-10-30 | ResMed R&D Germany GmbH | Breathing mask assembly |
JP2007506480A (en) | 2003-08-18 | 2007-03-22 | ワンドカ,アンソニー・ディ | Methods and apparatus for non-invasive ventilation with a nasal interface |
US7357136B2 (en) | 2003-08-18 | 2008-04-15 | Ric Investments, Llc | Patient interface assembly and system using same |
AU2004268479B2 (en) * | 2003-09-03 | 2008-12-11 | Fisher & Paykel Healthcare Limited | A mask |
AU2004203870B2 (en) * | 2003-09-17 | 2011-03-03 | Fisher & Paykel Healthcare Limited | Breathable Respiratory Mask |
NZ546850A (en) * | 2003-11-25 | 2010-10-29 | Resmed Ltd | Vent system for a mask that has selectable vents, noise reduction means and an alarm |
DE10355752B3 (en) * | 2003-11-28 | 2005-04-28 | Draegerwerk Ag | Respiration mask comprises a mask body with an exhalation section which is made up of a plurality of pivotable blade-like membrane elements attached to the mask body |
NZ765601A (en) * | 2003-12-31 | 2022-01-28 | ResMed Pty Ltd | Compact oronasal patient interface |
WO2005063326A1 (en) | 2003-12-31 | 2005-07-14 | Resmed Limited | Mask system |
WO2005079726A1 (en) | 2004-02-23 | 2005-09-01 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
EP1737524B1 (en) | 2004-04-02 | 2018-10-10 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
US9072852B2 (en) | 2004-04-02 | 2015-07-07 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
CN101683546A (en) * | 2004-04-09 | 2010-03-31 | 雷斯梅德有限公司 | Nasal assembly |
US20070246043A1 (en) | 2004-04-15 | 2007-10-25 | Resmed Limited | Positive-Air-Pressure Machine Conduit |
WO2005118040A1 (en) | 2004-06-03 | 2005-12-15 | Resmed Limited | Cushion for a patient interface |
JP2008507305A (en) | 2004-07-23 | 2008-03-13 | レスメド リミテッド | Elbow for patient interface |
US8967146B2 (en) * | 2004-07-23 | 2015-03-03 | Resmed Limited | Respiratory mask having gas washout vent and method for making the mask |
US7353827B2 (en) * | 2004-09-01 | 2008-04-08 | Vitol Signs, Inc. | Mask, mask shell and seal with improved mounting, mask seal, method of mask manufacture and mask with reduced exhalation noise |
US7975692B2 (en) * | 2004-09-03 | 2011-07-12 | Weinmann Geräte für Medizin GmbH & Co. KG | Respiratory device |
US20060112961A1 (en) * | 2004-11-29 | 2006-06-01 | Hany Aly | Pediatric mask, especially suited for premature infants |
US8251066B1 (en) * | 2004-12-22 | 2012-08-28 | Ric Investments, Llc | Exhalation port with built-in entrainment valve |
CN109011081B (en) | 2005-01-12 | 2022-01-28 | 瑞思迈私人有限公司 | Cushion for patient interface |
US7546837B2 (en) * | 2005-03-16 | 2009-06-16 | Ric Investments, Llc | Interface with rolling diaphragm |
US9901703B2 (en) | 2005-04-01 | 2018-02-27 | Resmed Limited | Mask pressure regulation in CPAP treatment and assisted respiration by dynamic control of mask vent flow |
JP5254787B2 (en) | 2005-06-06 | 2013-08-07 | レスメド・リミテッド | Mask system |
US7827987B2 (en) * | 2005-06-17 | 2010-11-09 | Nellcor Puritan Bennett Llc | Ball joint for providing flexibility to a gas delivery pathway |
US7600514B2 (en) * | 2005-06-17 | 2009-10-13 | Nellcor Puritan Bennett Llc | System and method for securing a gas delivery mask onto a subject's head |
US7849855B2 (en) * | 2005-06-17 | 2010-12-14 | Nellcor Puritan Bennett Llc | Gas exhaust system for a gas delivery mask |
US7900630B2 (en) * | 2005-06-17 | 2011-03-08 | Nellcor Puritan Bennett Llc | Gas delivery mask with flexible bellows |
WO2007012140A1 (en) * | 2005-07-29 | 2007-02-01 | Resmed Limited | Method and apparatus for managing moisture buildup in pressurised breathing systems |
US8316848B2 (en) | 2005-08-15 | 2012-11-27 | Resmed Limited | CPAP systems |
DE602005020140D1 (en) * | 2005-09-01 | 2010-05-06 | Deas S R L | Device for ventilation support |
EP1926517A2 (en) | 2005-09-20 | 2008-06-04 | Lutz Freitag | Systems, methods and apparatus for respiratory support of a patient |
EP1772098B1 (en) * | 2005-10-10 | 2014-02-26 | CareFusion Germany 234 GmbH | Measuring head for diagnostic instruments and method |
NZ591992A (en) | 2005-10-14 | 2012-11-30 | Resmed Ltd | Breathing mask with cushion attached to frame via lip of cushion engaging within recess between frame outer and inner walls, and guided in via angled protrusion of frame inner wall |
NZ612787A (en) | 2005-10-25 | 2015-01-30 | Resmed Ltd | Interchangeable mask assembly |
US20090151729A1 (en) | 2005-11-08 | 2009-06-18 | Resmed Limited | Nasal Assembly |
US20080142015A1 (en) * | 2006-01-27 | 2008-06-19 | David Groll | Apparatus to provide continuous positive airway pressure |
NZ570220A (en) * | 2006-03-01 | 2011-10-28 | Resmed Ltd | Reminder system on CPAP mask to provide a reminder after a predeterminded amount of time, relating to servicing |
US20080053446A1 (en) * | 2006-03-31 | 2008-03-06 | Tiara Medical Systems, Inc. | Adjustable cpap mask assembly |
USD597199S1 (en) | 2006-04-28 | 2009-07-28 | Resmed Limited | Respiratory mask frame |
CN101541365A (en) | 2006-05-18 | 2009-09-23 | 呼吸科技公司 | Tracheostoma tracheotomy method and device |
US8025058B2 (en) | 2006-07-05 | 2011-09-27 | Mergenet Solutions, Inc. | Variable CPAP respiratory interface |
WO2008005578A2 (en) * | 2006-07-07 | 2008-01-10 | Aeiomed, Inc. | Composite masks and methods for positive airway pressure therapies |
CN101489617B (en) | 2006-07-14 | 2012-09-05 | 菲舍尔和佩克尔保健有限公司 | Breathing assistance apparatus |
AU2012265597B2 (en) * | 2006-07-14 | 2015-05-21 | Fisher & Paykel Healthcare Limited | Breathing Assistance Apparatus |
NZ596570A (en) | 2006-07-28 | 2014-02-28 | Resmed Ltd | Delivery of respiratory therapy |
NZ738046A (en) | 2006-07-28 | 2019-06-28 | ResMed Pty Ltd | Delivery of respiratory therapy |
US8205615B1 (en) * | 2006-09-29 | 2012-06-26 | Ric Investments, Llc | Self directing exhaust port assembly |
WO2008058330A1 (en) * | 2006-11-14 | 2008-05-22 | Resmed Ltd | Frame and vent assembly for mask assembly |
USD635661S1 (en) | 2006-11-14 | 2011-04-05 | Resmed Limited | Frame for respiratory mask |
EP2101855B1 (en) | 2006-12-15 | 2013-08-21 | ResMed Limited | Respiratory Mask |
US9486597B2 (en) * | 2007-01-30 | 2016-11-08 | Ric Investments, Llc | Aerosol delivery mask |
US8517023B2 (en) | 2007-01-30 | 2013-08-27 | Resmed Limited | Mask system with interchangeable headgear connectors |
NZ589685A (en) | 2007-04-19 | 2012-06-29 | Resmed Ltd | Cushion for patient breathing interface with variable density foam supported membrane |
WO2008144589A1 (en) | 2007-05-18 | 2008-11-27 | Breathe Technologies, Inc. | Methods and devices for sensing respiration and providing ventilation therapy |
US8240306B2 (en) | 2007-07-18 | 2012-08-14 | Vapotherm, Inc. | Base unit for breathing gas heating and humidification system |
AU2008203372B2 (en) | 2007-07-30 | 2013-12-19 | Resmed Limited | Patient Interface |
US8757157B2 (en) * | 2007-08-02 | 2014-06-24 | Resmed Limited | Mask for delivery of respiratory therapy to a patient |
EP2027880B1 (en) | 2007-08-24 | 2017-11-01 | Resmed Limited | Gas washout vent assembly for respiratory mask |
US8567399B2 (en) | 2007-09-26 | 2013-10-29 | Breathe Technologies, Inc. | Methods and devices for providing inspiratory and expiratory flow relief during ventilation therapy |
JP5513392B2 (en) | 2007-09-26 | 2014-06-04 | ブリーズ・テクノロジーズ・インコーポレーテッド | Method and apparatus for treating sleep apnea |
US8905023B2 (en) | 2007-10-05 | 2014-12-09 | Vapotherm, Inc. | Hyperthermic humidification system |
US9308343B2 (en) | 2008-02-19 | 2016-04-12 | Circadiance, Llc | Respiratory mask with disposable cloth body |
US9981104B1 (en) | 2008-02-19 | 2018-05-29 | Circadiance, Llc | Full face cloth respiratory mask |
NZ624599A (en) | 2008-03-04 | 2014-08-29 | Resmed Ltd | Mask system |
US11331447B2 (en) | 2008-03-04 | 2022-05-17 | ResMed Pty Ltd | Mask system with snap-fit shroud |
EP2259827B1 (en) | 2008-03-04 | 2019-10-30 | ResMed Pty Ltd | A foam respiratory mask |
NZ735524A (en) | 2008-03-04 | 2019-05-31 | ResMed Pty Ltd | An interface including a foam cushioning element |
US20090242529A1 (en) * | 2008-03-31 | 2009-10-01 | Groll David G | Method to cut apertures in a material |
WO2009151791A2 (en) | 2008-04-18 | 2009-12-17 | Breathe Technologies, Inc. | Methods and devices for sensing respiration and controlling ventilator functions |
US8770193B2 (en) | 2008-04-18 | 2014-07-08 | Breathe Technologies, Inc. | Methods and devices for sensing respiration and controlling ventilator functions |
US10792451B2 (en) | 2008-05-12 | 2020-10-06 | Fisher & Paykel Healthcare Limited | Patient interface and aspects thereof |
US10258757B2 (en) | 2008-05-12 | 2019-04-16 | Fisher & Paykel Healthcare Limited | Patient interface and aspects thereof |
US8291906B2 (en) | 2008-06-04 | 2012-10-23 | Resmed Limited | Patient interface systems |
US8905031B2 (en) | 2008-06-04 | 2014-12-09 | Resmed Limited | Patient interface systems |
NZ589990A (en) | 2008-06-05 | 2013-04-26 | Resmed Ltd | Treatment of respiratory conditions by automatic control of humidity in high flow rate and with gas leakage at interface to nares |
US11660413B2 (en) | 2008-07-18 | 2023-05-30 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
JP5715950B2 (en) | 2008-08-22 | 2015-05-13 | ブリーズ・テクノロジーズ・インコーポレーテッド | Method and apparatus for providing mechanical ventilation with an open airway interface |
CN104771821B (en) | 2008-09-12 | 2018-10-16 | 瑞思迈有限公司 | The interface structure method and apparatus of foam-based |
EP2344791B1 (en) | 2008-10-01 | 2016-05-18 | Breathe Technologies, Inc. | Ventilator with biofeedback monitoring and control for improving patient activity and health |
EP3323462B1 (en) | 2008-10-10 | 2021-12-15 | Fisher & Paykel Healthcare Limited | Nasal pillows for a patient interface |
US8430098B1 (en) | 2008-12-17 | 2013-04-30 | Venkata Buddharaju | Strapless nasal interface device |
US20180064900A1 (en) | 2008-12-17 | 2018-03-08 | Venkata Buddharaju | Strapless nasal interface device |
US9132250B2 (en) | 2009-09-03 | 2015-09-15 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive ventilation including a non-sealing ventilation interface with an entrainment port and/or pressure feature |
EP2213324B1 (en) | 2009-01-30 | 2016-07-27 | ResMed R&D Germany GmbH | Patient interface structure and method/tool for manufacturing same |
EP4218876A1 (en) | 2009-04-02 | 2023-08-02 | Breathe Technologies, Inc. | Systems for non-invasive open ventilation with gas delivery nozzles within an outer tube |
US9962512B2 (en) | 2009-04-02 | 2018-05-08 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive ventilation including a non-sealing ventilation interface with a free space nozzle feature |
WO2010111749A1 (en) * | 2009-04-03 | 2010-10-07 | Resmed Ltd | Mask system |
CN102458548B (en) | 2009-06-02 | 2015-05-20 | 瑞思迈有限公司 | Unobtrusive nasal mask |
CN102762250B (en) | 2009-09-03 | 2017-09-26 | 呼吸科技公司 | Mthods, systems and devices for including the invasive ventilation with entrainment port and/or the non-tight vented interface of pressure characteristic |
EP2488242B1 (en) * | 2009-10-14 | 2019-09-18 | Balancair APS | Medical breathing mask |
US10137271B2 (en) | 2009-11-18 | 2018-11-27 | Fisher & Paykel Healthcare Limited | Nasal interface |
AU2010334468A1 (en) | 2009-12-23 | 2012-08-09 | Fisher & Paykel Healthcare Limited | Patient interface and headgear |
EP2605836A4 (en) | 2010-08-16 | 2016-06-01 | Breathe Technologies Inc | Methods, systems and devices using lox to provide ventilatory support |
USD695887S1 (en) | 2010-09-10 | 2013-12-17 | Resmed Limited | Respiratory mask |
AU2011308095B2 (en) | 2010-09-30 | 2014-10-09 | Resmed Limited | Mask system |
CN103124575B (en) | 2010-09-30 | 2015-12-16 | 呼吸科技公司 | For the mthods, systems and devices of moistening respiratory tract |
WO2012040791A1 (en) | 2010-09-30 | 2012-04-05 | Resmed Limited | Patient interface systems |
EP4070841A1 (en) | 2010-10-08 | 2022-10-12 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
US20120167891A1 (en) * | 2011-01-03 | 2012-07-05 | John Smaller | Adjustable facial conforming face mask |
US10603456B2 (en) | 2011-04-15 | 2020-03-31 | Fisher & Paykel Healthcare Limited | Interface comprising a nasal sealing portion |
CN106075691B (en) | 2011-04-15 | 2019-07-05 | 费雪派克医疗保健有限公司 | Interface including wrap-up bridge of the nose part |
JP6329902B2 (en) | 2011-09-13 | 2018-05-23 | レスメド・リミテッドResMed Limited | Respirator vent device |
EP4043056A1 (en) | 2011-11-15 | 2022-08-17 | ResMed Pty Ltd | Nasal mask system |
US9492086B2 (en) | 2012-03-21 | 2016-11-15 | Fresca Medical, Inc. | Apparatus, systems, and methods for treating obstructive sleep apnea |
US9333318B2 (en) | 2012-04-13 | 2016-05-10 | Fresca Medical, Inc. | Sleep apnea device |
CN104203324B (en) * | 2012-03-27 | 2017-07-14 | 皇家飞利浦有限公司 | There is provided improved skin nice and cool user interface device |
CN104245051B (en) * | 2012-04-20 | 2017-08-08 | 皇家飞利浦有限公司 | The carrier gas helmet with porous limitans |
EP2877224B1 (en) | 2012-05-18 | 2020-09-23 | ResMed Pty Ltd | Nasal mask system |
US9949873B2 (en) * | 2012-07-11 | 2018-04-24 | 12th Man Technologies, Inc. | Heat retention mask and method of using the same |
CN116764059A (en) | 2012-07-27 | 2023-09-19 | 瑞思迈私人有限公司 | Patient interface and method for manufacturing the same |
CA3142517A1 (en) | 2012-08-08 | 2014-02-13 | Fisher & Paykel Healthcare Limited | Headgear for patient interface |
AU2013313717B2 (en) | 2012-09-04 | 2018-04-12 | Fisher & Paykel Healthcare Limited | Valsalva mask |
US10076619B2 (en) | 2012-09-11 | 2018-09-18 | Resmed Limited | Vent arrangement for respiratory mask |
US10660563B2 (en) | 2012-09-19 | 2020-05-26 | Resmed Sensor Technologies Limited | System and method for determining sleep stage |
NZ630547A (en) | 2012-10-01 | 2016-11-25 | Resmed Ltd | System and method for medical device identifier |
NZ727083A (en) | 2012-11-16 | 2018-06-29 | Resmed Ltd | Positioning and stabilising structure for a patient interface system |
US10821250B2 (en) | 2012-11-16 | 2020-11-03 | Fisher & Paykel Healthcare Limited | Nasal seal and respiratory interface |
US10543332B2 (en) | 2013-01-16 | 2020-01-28 | ResMed Pty Ltd | Patient interface |
NZ729050A (en) | 2013-01-18 | 2018-08-31 | ResMed Pty Ltd | Patient interface and method for making same |
US10004867B2 (en) | 2013-02-04 | 2018-06-26 | Resmed Limited | Respiratory apparatus |
US10413692B2 (en) | 2013-02-04 | 2019-09-17 | ResMed Pty Ltd | Cushion assembly |
USD809131S1 (en) | 2014-08-04 | 2018-01-30 | Resmed Limited | Respiratory mask assembly |
EP2950864B1 (en) | 2013-02-04 | 2023-12-06 | ResMed Pty Ltd | Respiratory apparatus |
US10987477B2 (en) | 2013-02-04 | 2021-04-27 | ResMed Pty Ltd | Respiratory apparatus |
WO2014129913A1 (en) | 2013-02-21 | 2014-08-28 | Fisher & Paykel Healthcare Limited | Patient interface with venting |
USD749205S1 (en) | 2013-03-08 | 2016-02-09 | Fresca Medical, Inc. | Sleep apnea device |
WO2014138803A1 (en) | 2013-03-14 | 2014-09-18 | Resmed Limited | Vent arrangement for respiratory device |
US10328222B2 (en) * | 2013-03-14 | 2019-06-25 | ResMed Pty Ltd | Vent device for use with a respiratory device |
NZ623462A (en) | 2013-04-12 | 2016-02-26 | Resmed Ltd | Neck strap, crown strap assembly and headgear for a breathing mask |
TWI650146B (en) | 2013-05-14 | 2019-02-11 | 瑞思邁有限公司 | Oral and nasal patient interface |
US10549060B2 (en) | 2013-06-25 | 2020-02-04 | ResMed Pty Ltd | Outlet connection assembly and method of making the same |
NZ631008A (en) | 2013-06-25 | 2017-07-28 | Resmed Ltd | Outlet connection assembly and method of making the same |
NZ783187A (en) | 2013-07-17 | 2023-06-30 | ResMed Pty Ltd | A patient interface system for treatment of respiratory disorders |
USD742501S1 (en) | 2013-07-18 | 2015-11-03 | Fresca Medical, Inc. | Sleep apnea device |
USD743021S1 (en) | 2013-07-18 | 2015-11-10 | Fresca Medical, Inc. | Sleep apnea device |
USD742502S1 (en) | 2013-07-18 | 2015-11-03 | Fresca Medical, Inc. | Sleep apnea device |
USD743535S1 (en) | 2013-07-26 | 2015-11-17 | Resmed Limited | Headgear for patient interface |
USD737953S1 (en) | 2013-07-26 | 2015-09-01 | Resmed Limited | Patient interface |
CN105636632B (en) | 2013-07-29 | 2018-06-12 | 瑞思迈有限公司 | For the heat moisture exchanger of patient interface |
EP3030303B8 (en) | 2013-08-05 | 2021-06-09 | Fisher & Paykel Healthcare Limited | Interface |
USD745139S1 (en) | 2013-08-16 | 2015-12-08 | Fresca Medical, Inc. | Sleep apnea device |
NZ631446A (en) | 2013-10-03 | 2016-05-27 | Resmed Ltd | Mask vent with side wall |
EP3062859B1 (en) | 2013-10-30 | 2022-07-06 | ResMed Pty Ltd | Control for pressure of a patient interface |
WO2015065750A1 (en) | 2013-10-30 | 2015-05-07 | Balboa Manufacturing Company, Llc | Balaclava with removable face mask |
EP3071276B1 (en) | 2013-11-15 | 2020-05-06 | ResMed Pty Ltd | Cushion member for a patient interface |
EP3653250B1 (en) | 2013-12-11 | 2024-04-03 | Fisher & Paykel Healthcare Limited | Respiratory interface |
NZ721310A (en) | 2013-12-17 | 2021-07-30 | ResMed Pty Ltd | A respiratory pressure treatment system |
WO2015092589A1 (en) * | 2013-12-18 | 2015-06-25 | Koninklijke Philips N.V. | Fluid connector with exhaust valve |
CN116370778A (en) | 2014-03-13 | 2023-07-04 | 瑞思迈私人有限公司 | Humidifier for respiratory therapy device |
USD762843S1 (en) | 2014-03-18 | 2016-08-02 | Resmed Limited | Air delivery tube |
CN114470452A (en) | 2014-04-23 | 2022-05-13 | 瑞思迈私人有限公司 | Apparatus for maintaining humidity in a patient interface |
NZ630742A (en) | 2014-05-01 | 2016-02-26 | Resmed Ltd | A patient interface |
SG11201609221TA (en) * | 2014-05-19 | 2016-12-29 | Fisher & Paykel Healthcare Ltd | Pressure controlled exhaust vent |
US10058672B2 (en) | 2014-05-21 | 2018-08-28 | Atom Medical Corporation | Gas supply mask apparatus |
USD754328S1 (en) | 2014-05-22 | 2016-04-19 | Intersurgical Ag | Respiratory mask |
US10232137B2 (en) | 2014-05-22 | 2019-03-19 | Resmed Limited | Patient interface |
USD759230S1 (en) | 2014-05-30 | 2016-06-14 | Fresca Medical, Inc. | Airflow generator for a sleep apnea system |
CN106687165A (en) | 2014-06-04 | 2017-05-17 | 革新医疗器械有限公司 | Combined nasal and mouth ventilation mask |
CN110876827B (en) | 2014-06-17 | 2022-08-02 | 费雪派克医疗保健有限公司 | Patient interface |
US10596340B2 (en) | 2014-06-17 | 2020-03-24 | ResMed Pty Ltd | Seal forming structure for a patient interface and a tool and method of manufacturing the seal forming structure |
NZ630741A (en) | 2014-06-19 | 2016-03-31 | Resmed Ltd | Patient interface for respiratory therapy |
WO2015196255A1 (en) | 2014-06-27 | 2015-12-30 | Resmed Limited | Auto-fit mask |
JP6845017B2 (en) | 2014-07-02 | 2021-03-17 | レスメド・プロプライエタリー・リミテッド | Customized patient interface and how it is manufactured |
EP4151257A1 (en) | 2014-08-20 | 2023-03-22 | Revolutionary Medical Devices, Inc. | Ventilation mask |
EP3185944A4 (en) | 2014-08-25 | 2018-04-04 | Fisher&Paykel Healthcare Limited | Respiratory mask and related portions, components or sub-assemblies |
TW202332392A (en) | 2014-09-16 | 2023-08-16 | 紐西蘭商費雪 & 佩凱爾關心健康有限公司 | Intramold headgear |
EP3193994B1 (en) | 2014-09-16 | 2022-04-20 | ResMed Pty Ltd | Headgear comprising spacer fabric |
WO2016041019A1 (en) | 2014-09-18 | 2016-03-24 | Resmed Limited | Gas washout vent for patient interface |
US10646680B2 (en) | 2014-09-19 | 2020-05-12 | Fisher & Paykel Healthcare Limited | Headgear assemblies and interface assemblies with headgear |
CN106999690B (en) | 2014-10-10 | 2020-12-01 | 瑞思迈私人有限公司 | Foam cushion breathing apparatus |
US10888681B2 (en) | 2014-11-26 | 2021-01-12 | ResMed Pty Ltd | Textile patient interface |
USD825740S1 (en) | 2014-12-12 | 2018-08-14 | Revolutionary Medical Devices | Surgical mask |
US10744295B2 (en) | 2015-01-13 | 2020-08-18 | ResMed Pty Ltd | Respiratory therapy apparatus |
WO2016119018A1 (en) | 2015-01-30 | 2016-08-04 | Resmed Asia Operations Pty Limited | Patient interface comprising a gas washout vent |
US10898668B2 (en) | 2015-03-04 | 2021-01-26 | ResMed Pty Ltd | Plastic to textile coupling for a patient interface and methods of manufacturing same |
WO2016139645A1 (en) | 2015-03-05 | 2016-09-09 | Resmed Limited | A humidifier for a respiratory therapy device |
WO2016141430A1 (en) | 2015-03-10 | 2016-09-15 | Resmed Limited | Fluid connector with face seal |
EP4147737A1 (en) | 2015-03-16 | 2023-03-15 | ResMed Pty Ltd | Patient interface |
NZ774240A (en) | 2015-03-25 | 2023-12-22 | ResMed Pty Ltd | Patient interface with blowout prevention for seal-forming portion |
US10159421B2 (en) | 2015-03-30 | 2018-12-25 | Resmed Sensor Technologies Limited | Detection of periodic breathing |
CN107735135B (en) | 2015-04-02 | 2020-06-26 | 希尔-罗姆服务私人有限公司 | Manifold for a respiratory device |
WO2016201358A1 (en) | 2015-06-11 | 2016-12-15 | Revolutionary Medical Devices, Inc. | Ventilation mask |
WO2016201516A1 (en) | 2015-06-16 | 2016-12-22 | Resmed Limited | Impeller with inclined and reverse inclined blades |
NZ773777A (en) | 2015-07-07 | 2023-12-22 | ResMed Pty Ltd | Respiratory pressure therapy device |
WO2017011864A1 (en) | 2015-07-20 | 2017-01-26 | Resmed Limited | Patient interface with volume reducing member |
EP3324767B1 (en) | 2015-07-24 | 2020-07-08 | ResMed Pty Ltd | Headgear with covered edge |
AU2016314605B2 (en) | 2015-09-04 | 2021-05-20 | Fisher & Paykel Healthcare Limited | Patient interfaces |
US10675430B2 (en) | 2015-09-23 | 2020-06-09 | ResMed Pty Ltd | Elbow assembly |
EP3352828B1 (en) | 2015-09-23 | 2022-06-01 | ResMed Pty Ltd | Patient interface with a seal-forming structure having varying thickness |
US10799661B2 (en) | 2015-09-23 | 2020-10-13 | ResMed Pty Ltd | Patient interface with a seal-forming structure having varying thickness |
CN108348722B (en) | 2015-09-23 | 2021-07-16 | 瑞思迈私人有限公司 | Patient interface |
JP6907213B2 (en) | 2015-09-23 | 2021-07-21 | レスメド・プロプライエタリー・リミテッド | Ventilation adapter for respiratory treatment system |
CN108617165B (en) | 2015-09-23 | 2023-11-14 | 瑞思迈私人有限公司 | Patient interface with foam seal forming structure |
EP4043054A1 (en) | 2015-09-23 | 2022-08-17 | ResMed Pty Ltd | Patient interface with foam seal-forming structure |
US10926050B2 (en) | 2015-09-23 | 2021-02-23 | ResMed Pty Ltd | Patient interface with a seal-forming structure having varying thickness |
EP3146991B1 (en) | 2015-09-25 | 2022-01-26 | ResMed Pty Ltd | Improved patient interface component |
US11504492B2 (en) | 2015-10-08 | 2022-11-22 | ResMed Pty Ltd | Air conduit for a respiratory device |
CN205198649U (en) * | 2015-10-19 | 2016-05-04 | 林信涌 | Respiratory mask and gaseous feeding mechanism thereof |
EP3178512B1 (en) | 2015-12-10 | 2019-08-28 | ResMed Pty Ltd | Adaptable patient interface |
US11167103B2 (en) | 2016-01-14 | 2021-11-09 | ResMed Pty Ltd | Oro-nasal patient interface |
JP6874010B2 (en) | 2016-01-21 | 2021-05-19 | レスメド・プロプライエタリー・リミテッド | Adjustable headgear tubing for patient interface |
USD805630S1 (en) | 2016-02-02 | 2017-12-19 | Resmed Limited | Air delivery tube |
US10695522B2 (en) | 2016-03-14 | 2020-06-30 | ResMed Pty Ltd | Respiratory pressure therapy device |
WO2017158543A1 (en) | 2016-03-16 | 2017-09-21 | Fisher & Paykel Healthcare Limited | Intra-mould substrate |
SG11201807705RA (en) | 2016-03-16 | 2018-10-30 | Fisher & Paykel Healthcare Ltd | Directional lock for interface headgear arrangement |
CN115212417A (en) | 2016-03-16 | 2022-10-21 | 费雪派克医疗保健有限公司 | Bandage subassembly |
US11357943B2 (en) | 2016-04-28 | 2022-06-14 | ResMed Pty Ltd | Patient interface |
USD882066S1 (en) | 2016-05-13 | 2020-04-21 | Fisher & Paykel Healthcare Limited | Frame for a breathing mask |
AU2017304220B2 (en) | 2016-07-25 | 2021-12-16 | ResMed Pty Ltd | Respiratory pressure therapy system |
US11376391B2 (en) | 2016-08-26 | 2022-07-05 | ResMed Pty Ltd | Respiratory pressure therapy system with nebulising humidifier |
WO2018052673A1 (en) | 2016-09-14 | 2018-03-22 | Revolutionary Medical Devices, Inc. | Ventilation mask |
US9629975B1 (en) | 2016-09-14 | 2017-04-25 | Revolutionary Medical Devices, Inc. | Ventilation mask |
EP4091656A1 (en) | 2016-09-21 | 2022-11-23 | ResMed Pty Ltd | Vent and vent adaptor for patient interface |
US11273276B2 (en) | 2016-10-04 | 2022-03-15 | ResMed Pty Ltd | Patient interface with movable frame |
JP7187450B2 (en) | 2016-10-05 | 2022-12-12 | フィッシャー アンド ペイケル ヘルスケア リミテッド | patient interface |
USD848606S1 (en) | 2016-11-07 | 2019-05-14 | Revolutionary Medical Devices, Inc. | Surgical mask |
WO2018085889A1 (en) | 2016-11-11 | 2018-05-17 | Resmed Asia Operations Pty Ltd | Gas washout vent for patient interface |
CN115192848A (en) | 2016-11-22 | 2022-10-18 | 瑞思迈私人有限公司 | Humidifier storage |
WO2018115331A1 (en) * | 2016-12-22 | 2018-06-28 | Koninklijke Philips N.V. | Expression kit for a breast pump device |
CN115089836A (en) | 2017-01-06 | 2022-09-23 | 瑞思迈私人有限公司 | Ventilation adapter for respiratory therapy system |
US11491297B2 (en) | 2017-01-09 | 2022-11-08 | ResMed Pty Ltd | Humidifier for a respiratory therapy device |
USD817478S1 (en) | 2017-01-25 | 2018-05-08 | Fisher & Paykel Healthcare Limited | Exhalation port for breathing circuit |
EP3582842B1 (en) | 2017-02-14 | 2023-05-10 | ResMed Pty Ltd | An impeller for a respiratory device |
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 |
USD823455S1 (en) | 2017-02-23 | 2018-07-17 | Fisher & Paykel Healthcare Limited | Cushion assembly for breathing mask assembly |
USD874646S1 (en) | 2017-03-09 | 2020-02-04 | Fisher & Paykel Healthcare Limited | Headgear component for a nasal mask assembly |
USD901673S1 (en) | 2017-03-09 | 2020-11-10 | Fisher & Paykel Healthcare Limited | Frame and breathing tube assembly for a nasal mask |
US11413417B2 (en) | 2017-03-31 | 2022-08-16 | ResMed Pty Ltd | Patient interface |
US11052217B2 (en) | 2017-05-17 | 2021-07-06 | ResMed Pty Ltd | Humidifier |
USD875242S1 (en) | 2017-09-20 | 2020-02-11 | Fisher & Paykel Healthcare Limited | Nasal mask and breathing tube set |
USD855793S1 (en) | 2017-09-20 | 2019-08-06 | Fisher & Paykel Healthcare Limited | Frame for a nasal mask |
US10792449B2 (en) | 2017-10-03 | 2020-10-06 | Breathe Technologies, Inc. | Patient interface with integrated jet pump |
USD898188S1 (en) | 2017-11-17 | 2020-10-06 | Revolutionary Medical Devices, Inc. | Surgical mask |
WO2019119058A1 (en) | 2017-12-22 | 2019-06-27 | ResMed Pty Ltd | Conduit headgear connector for patient interface |
WO2019148243A1 (en) | 2018-02-02 | 2019-08-08 | ResMed Pty Ltd | Connector assembly |
JP7297781B2 (en) | 2018-03-16 | 2023-06-26 | フィッシャー アンド ペイケル ヘルスケア リミテッド | Headgear with unlocking mechanism |
EP4321197A2 (en) | 2018-03-28 | 2024-02-14 | ResMed Pty Ltd | Patient interface |
EP3773846B1 (en) | 2018-03-29 | 2023-11-29 | ResMed Pty Ltd | Conduit with magnetic connector |
USD884153S1 (en) | 2018-04-04 | 2020-05-12 | Fisher & Paykel Healthcare Limited | Frame for a mask assembly |
US11376392B2 (en) | 2018-04-24 | 2022-07-05 | ResMed Pty Ltd | Tub for use in a humidifier |
US11590310B2 (en) | 2018-06-26 | 2023-02-28 | ResMed Pty Ltd | Headgear tubing for a patient interface |
GB2575050B (en) * | 2018-06-26 | 2022-09-14 | Draeger Safety Uk Ltd | Connection apparatus for breathing apparatus |
AU2019323224B2 (en) | 2018-08-20 | 2021-10-21 | ResMed Pty Ltd | Headgear for a patient interface |
EP3840809A4 (en) | 2018-08-20 | 2021-12-01 | ResMed Pty Ltd | Patient interface |
EP3866895A4 (en) | 2018-10-15 | 2022-07-27 | ResMed Pty Ltd | Systems and methods for active power management in a medical device |
AU2019361356A1 (en) | 2018-10-16 | 2021-05-13 | ResMed Pty Ltd | Patient interface |
US20200246572A1 (en) | 2018-10-16 | 2020-08-06 | ResMed Pty Ltd | Textile seal-forming structure with multiple curvatures |
JP7293358B2 (en) | 2018-12-13 | 2023-06-19 | レスメド・プロプライエタリー・リミテッド | Pneumatic block for respiratory pressure therapy devices |
US11508484B1 (en) | 2018-12-28 | 2022-11-22 | ResMed Pty Ltd | Prediction of respiratory therapy compliance |
USD892307S1 (en) * | 2018-12-29 | 2020-08-04 | Bmc Medical Co., Ltd. | Patient interface |
EP4245344A3 (en) | 2019-01-29 | 2023-12-27 | ResMed Pty Ltd | Headgear tubing for a patient interface |
EP3924027B1 (en) | 2019-02-13 | 2023-08-30 | ResMed Pty Ltd | Textile seal with air-assisted biasing portion |
MX2021008521A (en) | 2019-03-18 | 2021-08-11 | ResMed Pty Ltd | Plenum chamber insert for patient interface. |
US11707589B2 (en) | 2019-03-28 | 2023-07-25 | ResMed Pty Ltd | Patient interface |
KR20230038588A (en) | 2019-04-08 | 2023-03-20 | 레스메드 피티와이 엘티디 | Seal-forming structure, positioning and stabilizing structure and diffuser vent for patient interface |
EP4186552A1 (en) | 2019-04-17 | 2023-05-31 | ResMed Pty Ltd | Cpap system with resilient sealing for heater plate |
US11839720B2 (en) | 2019-04-17 | 2023-12-12 | ResMed Pty Ltd | Humidification interface arrangements |
BR112021022822A2 (en) | 2019-05-16 | 2022-04-12 | ResMed Pty Ltd | Two-way communication in a medical device |
CN113795292A (en) | 2019-05-31 | 2021-12-14 | 瑞思迈私人有限公司 | Ventilation ports and AAV assemblies |
EP3990078A4 (en) | 2019-06-28 | 2022-08-31 | ResMed Pty Ltd | Adjustable headgear that is easy to don and doff |
US11679214B2 (en) | 2019-07-15 | 2023-06-20 | Resmed Pty Ltd. | Energy transfer circuit |
WO2021019312A1 (en) | 2019-07-31 | 2021-02-04 | ResMed Pty Ltd | Patient interface having seal-forming structure with varying construction |
US11623059B2 (en) | 2019-08-12 | 2023-04-11 | ResMed Pty Ltd | Pivotable outlet port |
EP4028096A4 (en) | 2019-09-10 | 2023-09-20 | ResMed Pty Ltd | Patient interface |
JP2022547225A (en) | 2019-09-10 | 2022-11-10 | レスメド・プロプライエタリー・リミテッド | Oronasal patient interface |
US11844887B2 (en) | 2019-10-16 | 2023-12-19 | ResMed Pty Ltd | Textile seal-forming structure with multiple curvatures |
EP4051355A4 (en) | 2019-10-31 | 2023-11-22 | ResMed Pty Ltd | Textile conduit with windows |
US11813399B2 (en) | 2019-11-28 | 2023-11-14 | Liauna Kelly | Continuous positive airway pressure (CPAP) apparatus and system |
JP2023504120A (en) | 2019-11-29 | 2023-02-01 | レスメド・プロプライエタリー・リミテッド | Adjustable headgear tubing for patient interface |
US20210170131A1 (en) * | 2019-12-09 | 2021-06-10 | Koninklijke Philips N.V. | Patient interface having a restrictor element for varying flow resistance through an exhalation port thereof |
WO2021151148A1 (en) | 2020-01-29 | 2021-08-05 | ResMed Pty Ltd | Connector for positioning and stabilising structure |
US20200376305A1 (en) | 2020-06-10 | 2020-12-03 | Noah Lang | Personal protective equipment system for safe air, train or bus travel protecting against infectious agents including novel coronavirus - covid-19 |
US11426551B1 (en) | 2020-06-23 | 2022-08-30 | Lisa M. Butler, Esquire | Nasal ventilation mask |
US11931511B2 (en) | 2020-07-30 | 2024-03-19 | ResMed Pty Ltd | Seal-forming structure of patient interface with multiple sealing materials |
US11213702B1 (en) | 2020-08-31 | 2022-01-04 | ResMed Pty Ltd | Hygiene mask with seal forming structure |
EP4237052A1 (en) | 2020-10-30 | 2023-09-06 | ResMed Pty Ltd | Two-way communication in a medical device |
US20220401681A1 (en) | 2021-05-31 | 2022-12-22 | ResMed Pty Ltd | Vents for patient interfaces |
US20230062214A1 (en) | 2021-08-20 | 2023-03-02 | ResMed Pty Ltd | Vent structure for a respiratory therapy system |
EP4144394A1 (en) | 2021-09-06 | 2023-03-08 | ResMed Pty Ltd | Patient interface system |
EP4154933A1 (en) | 2021-09-23 | 2023-03-29 | ResMed Pty Ltd | Patient interface for promoting natural breathing |
US11471634B1 (en) | 2021-12-14 | 2022-10-18 | ResMed Pty Ltd | Oro-pillow cushion assembly |
US20240066259A1 (en) | 2022-08-24 | 2024-02-29 | ResMed Pty Ltd | Methods and apparatus for increasing breathing comfort during respiratory therapy |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6357440B1 (en) * | 1999-06-16 | 2002-03-19 | Mallinckrodt Inc. | Pliable respiratory mask |
US6581594B1 (en) * | 2000-05-15 | 2003-06-24 | Resmed Limited | Respiratory mask having gas washout vent and gas washout vent for respiratory mask |
US6659102B1 (en) * | 2002-07-23 | 2003-12-09 | Anthony L. Sico | Oxygen mask filter system |
Family Cites Families (295)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE459104C (en) | 1928-04-26 | Hans Jancke | Device for preventing snoring | |
US651191A (en) * | 1899-12-06 | 1900-06-05 | John Henry Koons | Extensible carriage. |
DE159396C (en) | 1904-01-19 | 1905-03-21 | ||
US781516A (en) | 1904-02-03 | 1905-01-31 | George N Guthrie Jr | Respirator and inhaler. |
US812706A (en) | 1904-08-03 | 1906-02-13 | Joseph Warbasse | Respirator. |
US835075A (en) | 1906-02-19 | 1906-11-06 | Samuel H Mahaffy | Apparatus for fresh-air treatment. |
US1192186A (en) | 1910-09-20 | 1916-07-25 | Samuel Ward Greene | Respirator. |
US1081745A (en) | 1912-05-03 | 1913-12-16 | White S Dental Mfg Co | Nasal inhaler. |
US1653572A (en) | 1922-12-30 | 1927-12-20 | Dennis E Jackson | Combined face piece and automatic valve |
US1926027A (en) | 1929-09-09 | 1933-09-12 | William P Biggs | Breathing apparatus |
US2008677A (en) | 1931-09-16 | 1935-07-23 | Bertram Werner | Breathing mask |
US2123353A (en) | 1935-04-06 | 1938-07-12 | Catt Samuel George | Inhaler |
US2102037A (en) | 1936-04-21 | 1937-12-14 | Schwartz Nathan | Filter type respirator |
DE701690C (en) | 1937-03-12 | 1941-01-22 | Deutsches Reich Vertreten Durc | Oxygen breathing apparatus, especially high altitude breathing apparatus |
US2259817A (en) | 1939-02-27 | 1941-10-21 | Eva M Hawkins | Adjustable head attachment for oxygen tubes |
US2248477A (en) | 1940-02-27 | 1941-07-08 | Charles F Lombard | Method and apparatus for administering oxygen |
US2254854A (en) | 1941-05-16 | 1941-09-02 | Harold V O'connell | Anesthetic administering device |
US2376871A (en) | 1941-05-24 | 1945-05-29 | Fink Rudolph | Respirator mask |
US2317608A (en) | 1941-09-23 | 1943-04-27 | Air Reduction | Mask |
US2371965A (en) | 1941-11-03 | 1945-03-20 | American Optical Corp | Respirator |
US2371966A (en) * | 1942-03-31 | 1945-03-20 | Stacey Bros Gas Construction C | Sealing means for the piston of a gasholder |
US2438058A (en) | 1943-09-15 | 1948-03-16 | Dwight N Kincheloe | Air supply device for respirators |
US2415846A (en) | 1944-10-23 | 1947-02-18 | Randall Francis Eugene | Oronasal mask |
US2578621A (en) | 1945-12-29 | 1951-12-11 | Mine Safety Appliances Co | Respirator mask |
DE1102976B (en) | 1954-01-16 | 1961-03-23 | Chirana Praha Np | Valve piece with an inhalation valve and an exhalation valve intended for anesthesia devices or devices for artificial respiration |
US2843121A (en) | 1955-05-20 | 1958-07-15 | Charles H Hudson | Oxygen mask |
US2872923A (en) | 1957-03-20 | 1959-02-10 | Birch And Gattone Inc | Means for administering pressurized medicaments, gases, combinations thereof and liquids into body cavities |
US2939458A (en) | 1957-04-29 | 1960-06-07 | Bendix Aviat Corp | Respiratory masks |
US2931356A (en) | 1958-08-25 | 1960-04-05 | Puritan Compressed Gas Corp | Oxygen mask having detachable face seal cushion |
US2939468A (en) | 1959-03-26 | 1960-06-07 | Andrew S Boyce | Utility peg |
US3013556A (en) | 1959-08-07 | 1961-12-19 | Jr Ellis A Galleher | Head strap for respiratory masks |
US3182659A (en) | 1962-01-15 | 1965-05-11 | Gordon D Mcmaude | Oxygen and inhalant mask |
US3162411A (en) | 1962-03-12 | 1964-12-22 | Watts Electric & Mfg Co | Grommet assembly |
US3189027A (en) | 1962-11-29 | 1965-06-15 | Jr Roscoe G Bartlett | Anti-suffocant apparatus for oxygen supply systems |
US3238943A (en) | 1963-06-19 | 1966-03-08 | Holley Edgar Bruce | Aid breathing system |
US3291127A (en) * | 1963-10-30 | 1966-12-13 | Lee R Eimer | Audio exhalation valve for anesthetic nose mask |
DE1972590U (en) | 1964-06-15 | 1967-11-16 | Asmund S Laerdal | VALVE FOR REVIVAL APPARATUS. |
DE1913425U (en) | 1964-06-15 | 1965-04-08 | Asmund S Laerdal | RESPIRATORY MASK FOR RESUSTRATIVE DEVICES. |
US3330273A (en) | 1964-10-15 | 1967-07-11 | Puritan Compressed Gas Corp | Oro-nasal face mask with improved sealing cuff |
US3315674A (en) | 1964-12-28 | 1967-04-25 | Sierra Engineering Company | Filter mask facelet |
US3362420A (en) | 1965-08-11 | 1968-01-09 | Navy Usa | Anti-suffocation valve |
US3412231A (en) | 1966-03-29 | 1968-11-19 | Int Paper Co | Extrusion die including electrical cartridge heaters |
US3490452A (en) | 1967-06-20 | 1970-01-20 | Samuel L Greenfield | Therapeutic face mask |
GB1258071A (en) | 1968-03-04 | 1971-12-22 | ||
US3513844A (en) | 1968-04-30 | 1970-05-26 | Metro Hospital Supply Co Inc | Adjustable nonrestrictive nasal cannula |
US3877425A (en) | 1969-06-12 | 1975-04-15 | Westinghouse Electric Corp | Underwater breathing apparatus |
US3580051A (en) | 1969-10-03 | 1971-05-25 | Us Army | Method for leak testing masks |
US3680556A (en) | 1969-10-22 | 1972-08-01 | U S Divers Co | Diving helmet |
US3720235A (en) | 1970-09-30 | 1973-03-13 | Moore & Co Samuel | Composite tubing |
US3799164A (en) | 1971-08-12 | 1974-03-26 | Du Pont | Analgesic apparatus |
GB1395391A (en) | 1972-04-14 | 1975-05-29 | Vickers Ltd | Medical face masks |
US3796216A (en) | 1972-04-24 | 1974-03-12 | K Schwarz | Resuscitator |
US3762747A (en) | 1972-09-25 | 1973-10-02 | Gen Motors Corp | Grommet |
US3949743A (en) | 1973-03-19 | 1976-04-13 | Schick Incorporated | Medicated vapor production method and apparatus |
DE2318914B2 (en) | 1973-04-14 | 1976-07-22 | Laerdal, Asmund S., Stavanger (Norwegen) | VENTILATION MASK |
US3850171A (en) * | 1973-05-16 | 1974-11-26 | Vickers Ltd | Medical face masks |
US3866095A (en) | 1973-07-13 | 1975-02-11 | Sprague Electric Co | Plastic encased component with reflowed-plastic sealed leads |
US3868164A (en) | 1974-01-23 | 1975-02-25 | Amerace Corp | Insulating receptacle with test point |
US3942403A (en) | 1975-02-18 | 1976-03-09 | Steinway & Sons | Bushing for piano action |
US3958275A (en) | 1975-03-06 | 1976-05-25 | Morgan Bevly B | Helmet for divers |
US4077404A (en) | 1975-09-17 | 1978-03-07 | H. B. W. Medical Instruments Manufacturing Company, Inc. | Breathing equipment such as resuscitators |
US4037142A (en) | 1976-01-29 | 1977-07-19 | Sprague Electric Company | Electrolytic capacitor package having a grommet with tapered lead holes |
CA1039144A (en) | 1976-07-14 | 1978-09-26 | Arthur A. Scott | Shielded face mask |
USD250131S (en) | 1976-10-18 | 1978-10-31 | Chemetron Corporation | Breathing mask |
US4167185A (en) | 1977-04-18 | 1979-09-11 | A-T-O Inc. | Face mask seal |
US4137602A (en) | 1977-11-11 | 1979-02-06 | Heyman Manufacturing Company | Multipurpose bushing and aperture locking system |
US4201205A (en) * | 1978-01-20 | 1980-05-06 | Hudson Oxygen Therapy Sales Company | Oxygen mask |
US4219020A (en) | 1978-08-09 | 1980-08-26 | Fraser Sweatman, Inc. | Scavenger valve attachment for inhalation sedation system mask |
US4258710A (en) * | 1978-08-16 | 1981-03-31 | Reber Fred L | Mask-type respirator |
US4266540A (en) * | 1978-10-13 | 1981-05-12 | Donald Panzik | Nasal oxygen therapy mask |
US4226234A (en) | 1979-02-12 | 1980-10-07 | Rescuetech Corporation | Respiratory valve face mask structure |
DE2908528C2 (en) | 1979-03-05 | 1984-04-05 | Drägerwerk AG, 2400 Lübeck | Lung-controlled breathing apparatus with positive pressure inside the mask |
GB2045092B (en) | 1979-04-03 | 1983-05-25 | Warne Surgical Products Ltd | Face masks |
USD262322S (en) | 1979-07-23 | 1981-12-15 | Mizerak Vladimir S | Nasal cannula mouth mask |
US4274406A (en) | 1979-09-04 | 1981-06-23 | Bartholomew Victor L | Tracheotomy mask |
US4245632A (en) | 1979-09-12 | 1981-01-20 | S.C.A.B.A., Inc. | Underwater breathing apparatus |
US4304229A (en) | 1980-04-18 | 1981-12-08 | Curtin David E | Underwater-breathing device |
DE3015279A1 (en) | 1980-04-21 | 1981-10-29 | Manfred Prof. Dipl.-Ing. 6301 Pohlheim Roth | X=Ray contrast agent aerosol for inhalation - in radiography of the central bronchial system not requiring patient anaesthesia |
US4467799A (en) | 1980-05-05 | 1984-08-28 | Steinberg Jacob H | Transparent odor-free face mask |
DE3023648A1 (en) | 1980-06-24 | 1982-01-21 | Jaeger, Erich, 8700 Würzburg | DEVICE FOR EXAMINING THE RESPIRATORY RESPIRATORY SENSITIVITY |
US4363580A (en) | 1980-07-07 | 1982-12-14 | The Boeing Company | Self-retaining close tolerance bushing |
US4328797A (en) | 1980-07-23 | 1982-05-11 | Rollins Iii Offord L | Naso-gastric oxygen mask |
US4354488A (en) | 1980-11-24 | 1982-10-19 | Dow Corning Corporation | Nose mask gas delivery device |
DE3048276C2 (en) | 1980-12-16 | 1988-06-16 | Auergesellschaft Gmbh, 1000 Berlin | Breathing protection hood, especially for an escape |
US4408818A (en) | 1981-02-26 | 1983-10-11 | Sprague Electric Company | Capacitor cover-terminal assembly |
WO1982003548A1 (en) | 1981-04-24 | 1982-10-28 | Sullivan Colin Edward | Device for treating snoring sickness |
US4402316A (en) | 1981-04-27 | 1983-09-06 | U.S.D. Corp. | Breathing gas mask |
US4412537A (en) | 1981-07-27 | 1983-11-01 | Tiger Howard L | Fresh air breathing mask with exterior heat exchanger |
US4454881A (en) | 1981-08-21 | 1984-06-19 | Moldex/Metric Products, Inc. | Multi-layer face mask with molded edge bead |
GB2106396B (en) | 1981-09-22 | 1984-11-21 | Ian Malcolm Vickery | Anaesthesia mask |
US4440163A (en) | 1982-07-30 | 1984-04-03 | Gabriel Spergel | Emergency escape breathing apparatus |
US4535767A (en) | 1982-10-01 | 1985-08-20 | Tiep Brian L | Oxygen delivery apparatus |
JPS59107399A (en) | 1982-12-13 | 1984-06-21 | リオン株式会社 | Measurement of nasalization level |
US4522639A (en) | 1983-04-15 | 1985-06-11 | Figgie International Inc. | Unified filter and connector housing assembly incorporating a diversion valve |
US4774941A (en) | 1983-05-04 | 1988-10-04 | Intertech Resources Inc. | Resuscitator bag |
GB8320233D0 (en) | 1983-07-27 | 1983-09-01 | Martin A | Resuscitation apparatus |
US4622964A (en) | 1983-09-28 | 1986-11-18 | O-Two Systems International Inc. | Valve for breathing device |
US4655213A (en) | 1983-10-06 | 1987-04-07 | New York University | Method and apparatus for the treatment of obstructive sleep apnea |
US4774946A (en) | 1983-11-28 | 1988-10-04 | Ackrad Laboratories, Inc. | Nasal and endotracheal tube apparatus |
US4559939A (en) | 1984-02-13 | 1985-12-24 | Lockheed Corporation | Compatible smoke and oxygen masks for use on aircraft |
US4580556A (en) | 1984-04-13 | 1986-04-08 | Kondur Prabhakar R | Adaptor for endotracheal intubation |
US4677977A (en) | 1984-08-03 | 1987-07-07 | Gentex Corporation | Mask for pressure breathing |
US4616647A (en) | 1984-08-13 | 1986-10-14 | Parmelee Industries, Inc. | Molded fiber disposable face mask having enhanced nose and chin filter-seals |
FI76929C (en) | 1984-09-25 | 1989-01-10 | Etelae Haemeen Keuhkovammayhdi | Inhalation dosing device intended for accurate dosing of disposable drugs given for respiratory illness in the examination stage and / or drugs given as a spray during treatment. |
NZ209900A (en) | 1984-10-16 | 1989-08-29 | Univ Auckland | Automatic inhaler |
FR2574657A1 (en) | 1984-12-13 | 1986-06-20 | Gourdon Jean Loup | Anti-snoring device |
US4649912A (en) | 1985-05-07 | 1987-03-17 | Collins William C | Supplied air respirator system |
FI81500C (en) | 1985-05-23 | 1990-11-12 | Etelae Haemeen Keuhkovammayhdi | Respiratory Treatment Unit |
US4648394A (en) | 1985-06-12 | 1987-03-10 | Mine Safety Appliances Company | Facemask for abrasive service |
DE3537507C2 (en) | 1985-10-22 | 1993-11-25 | Salvia Lifetec Gmbh & Co Kg | Device for supportive intermittent pressure ventilation and aerosol therapy |
DE3539073A1 (en) | 1985-11-04 | 1987-05-14 | Walter Pollak | Breathing regulator for the restoration of a normal supply of the human organs with oxygen |
US4665570A (en) | 1985-11-12 | 1987-05-19 | Davis James E P | Face mask seal |
USD293613S (en) | 1985-11-18 | 1988-01-05 | Anesthesia Respiratory Technology, Inc. | Anesthesia and respiratory face mask |
US4671271A (en) | 1985-11-27 | 1987-06-09 | Dolores Bishop | Protective facial mask |
US4809692A (en) | 1986-01-31 | 1989-03-07 | Trudell Medical | Pediatric asthmatic medication inhaler |
GB8603558D0 (en) | 1986-02-13 | 1986-03-19 | Lifeline Ltd | Face mask |
SE455760B (en) | 1986-07-03 | 1988-08-08 | Horda Gummifabrik Ab | INSIDE MASK FOR SAFETY MASK |
US4821713A (en) | 1986-07-07 | 1989-04-18 | Jack Bauman | Resuscitator |
US5140982A (en) | 1986-07-07 | 1992-08-25 | Jack Bauman | Resuscitator |
US4848366A (en) | 1986-08-12 | 1989-07-18 | Cybernetic Systems, Inc. | Exhaust mask system and device |
US4739755A (en) | 1986-10-17 | 1988-04-26 | American Cyanamid Company | Respirator |
DE3636669C2 (en) | 1986-10-28 | 2001-08-16 | Siemens Ag | Arrangement for delivering aerosol to a patient's airways and / or lungs |
EP0266456A1 (en) | 1986-11-06 | 1988-05-11 | Moldex-Metric AG & Co.KG | Respiratory face mask |
US4841953A (en) | 1986-11-07 | 1989-06-27 | Dodrill Gregg W | Auxiliary supply system for a portable self-contained breathing apparatus |
USD310431S (en) | 1987-01-30 | 1990-09-04 | Lifeline Limited | Gas delivery mask |
US4770169A (en) | 1987-02-13 | 1988-09-13 | Mdt Diagnostic Company | Anaesthetic mask |
US5080094A (en) | 1987-04-13 | 1992-01-14 | Better Breathing, Inc. | Face mask |
US5126189A (en) * | 1987-04-21 | 1992-06-30 | Gelman Sciences, Inc. | Hydrophobic microporous membrane |
US5199424A (en) | 1987-06-26 | 1993-04-06 | Sullivan Colin E | Device for monitoring breathing during sleep and control of CPAP treatment that is patient controlled |
US5322057A (en) | 1987-07-08 | 1994-06-21 | Vortran Medical Technology, Inc. | Intermittent signal actuated nebulizer synchronized to operate in the exhalation phase, and its method of use |
US4971051A (en) | 1987-07-13 | 1990-11-20 | Toffolon Norman R | Pneumatic cushion and seal |
US5388571A (en) | 1987-07-17 | 1995-02-14 | Roberts; Josephine A. | Positive-pressure ventilator system with controlled access for nebulizer component servicing |
US4782832A (en) | 1987-07-30 | 1988-11-08 | Puritan-Bennett Corporation | Nasal puff with adjustable sealing means |
US5005568A (en) | 1987-10-07 | 1991-04-09 | Hudson Respiratory Care Inc. | Isolation valve |
US4938212A (en) | 1987-10-16 | 1990-07-03 | Puritan-Bennett Corporation | Inspiration oxygen saver |
US5065756A (en) | 1987-12-22 | 1991-11-19 | New York University | Method and apparatus for the treatment of obstructive sleep apnea |
FI82808C (en) | 1987-12-31 | 1991-04-25 | Etelae Haemeen Keuhkovammayhdi | Ultraljudfinfördelningsanordning |
US4907584A (en) | 1988-03-03 | 1990-03-13 | Mcginnis Gerald E | Respiratory mask |
US4799477A (en) | 1988-03-28 | 1989-01-24 | Lewis Ralph H | Rebreathing mask |
US4969901A (en) | 1988-06-28 | 1990-11-13 | Binder William J | Plastic surgery implant |
CA1302009C (en) | 1988-07-08 | 1992-06-02 | Brian H. Harrison | Universal head harness |
US4919128A (en) | 1988-08-26 | 1990-04-24 | University Technologies International Inc. | Nasal adaptor device and seal |
US5042478A (en) | 1988-08-26 | 1991-08-27 | University Technologies International, Inc. | Method of ventilation using nares seal |
AU108058S (en) | 1988-09-30 | 1990-06-28 | Resmed Ltd | A nasal manifold |
US4915105A (en) | 1988-10-28 | 1990-04-10 | Lee Tien Chu | Miniature respiratory apparatus |
US5109839A (en) | 1988-11-14 | 1992-05-05 | Blasdell Richard J | Inhalation apparatus |
US5311862A (en) | 1988-11-14 | 1994-05-17 | Blasdell Richard J | Inhalation apparatus |
US5005571A (en) | 1988-11-25 | 1991-04-09 | Dietz Henry G | Mouth nose mask for use with an inhalation therapy and/or breathing monitoring apparatus |
DE3842222A1 (en) | 1988-12-15 | 1990-06-28 | Auergesellschaft Gmbh | Mouthpiece valve for protective breathing equipment |
US4989599A (en) | 1989-01-26 | 1991-02-05 | Puritan-Bennett Corporation | Dual lumen cannula |
US4989596A (en) | 1989-02-14 | 1991-02-05 | Macris Allen G | Face chamber |
DE3907428A1 (en) | 1989-03-08 | 1990-09-20 | Auergesellschaft Gmbh | RESPIRATORY MASK |
CA1332905C (en) | 1989-03-10 | 1994-11-08 | John A. Murchie | Method and apparatus for treatment of snoring |
US4938210A (en) | 1989-04-25 | 1990-07-03 | Trudell Medical | Inhalation chamber in ventilator circuit |
US4910806A (en) | 1989-05-01 | 1990-03-27 | Innovative Scuba Concepts, Inc. | Adjustable strap for use with a diver's face mask |
US5265595A (en) | 1989-06-19 | 1993-11-30 | Hans Rudolph, Inc. | Mask for breath analysis |
US5148802B1 (en) * | 1989-09-22 | 1997-08-12 | Respironics Inc | Method and apparatus for maintaining airway patency to treat sleep apnea and other disorders |
GB2236681B (en) | 1989-10-12 | 1992-04-22 | Harry Cole | Respiratory protection device |
CA2019533A1 (en) | 1989-11-09 | 1991-05-09 | William H. Hollister | Face mask and face mask components |
USD323908S (en) | 1989-11-09 | 1992-02-11 | Smith Industries Medical Systems, Inc. | Face mask |
US5231983A (en) | 1990-01-03 | 1993-08-03 | Minnesota Mining And Manufacturing | Method of and apparatus for the aerosol administration of medication |
DE4004157C1 (en) | 1990-02-10 | 1991-04-11 | Draegerwerk Ag, 2400 Luebeck, De | Respiratory nose-mouth half mask - has body with peripheral seal bead to define separate compartments |
US5042473A (en) | 1990-02-15 | 1991-08-27 | Pro-Tech Respirators, Inc. | Demand valve for a respirator |
FR2658725B1 (en) | 1990-02-26 | 1992-07-03 | Barthou Gilles | METHOD FOR MANUFACTURING A NASAL ORTHESIS AND NASAL MASK COMPRISING SUCH AN ORTHESIS. |
US5069205A (en) | 1990-04-20 | 1991-12-03 | Figgie International, Inc. | Quick-donning head harness assembly |
US5243971A (en) | 1990-05-21 | 1993-09-14 | The University Of Sydney | Nasal mask for CPAP having ballooning/moulding seal with wearer's nose and facial contours |
ES2068508T3 (en) | 1990-05-21 | 1995-04-16 | Univ Sydney | NASAL MASK. |
US5121745A (en) | 1990-07-23 | 1992-06-16 | Israel Michael B | Self-inflatable rescue mask |
US5018519B1 (en) | 1990-08-03 | 2000-11-28 | Porter Instr Company Inc | Mask for administering an anesthetic gas to a patient |
US5069586A (en) | 1990-08-27 | 1991-12-03 | Casey Marion B | Self-locking two-part grommet |
US5046200A (en) | 1990-08-29 | 1991-09-10 | Irving Feder | Reversible, quick-adjustable diver's face mask strap |
US5069222A (en) | 1990-08-31 | 1991-12-03 | Mcdonald Jr Lewis D | Respiration sensor set |
US5117819A (en) * | 1990-09-10 | 1992-06-02 | Healthdyne, Inc. | Nasal positive pressure device |
US5178138A (en) | 1990-09-11 | 1993-01-12 | Walstrom Dennis R | Drug delivery device |
US5280784A (en) | 1990-09-19 | 1994-01-25 | Paul Ritzau Pari-Werk Gmbh | Device in particular and inhalating device for treating the lung and the respiratory tracts |
US5109840A (en) | 1991-02-14 | 1992-05-05 | Specialty Packaging Licensing Company | Resuscitator having directional control valve with internal "PEEP" adjustment valve |
US5450336A (en) | 1991-03-05 | 1995-09-12 | Aradigm Corporation | Method for correcting the drift offset of a transducer |
US5404871A (en) | 1991-03-05 | 1995-04-11 | Aradigm | Delivery of aerosol medications for inspiration |
USD334633S (en) | 1991-03-11 | 1993-04-06 | Hans Rudolph, Inc. | Mask |
CA2068925A1 (en) | 1991-05-21 | 1992-11-22 | Amad Tayebi | Breathing mask |
FR2676650B1 (en) | 1991-05-22 | 1993-08-13 | Lemitouard Anne | FACIAL RESPIRATORY MASK. |
US5159938A (en) | 1991-08-27 | 1992-11-03 | Laughlin Patrick E | Eye shield |
DE4132680C2 (en) | 1991-10-01 | 1994-02-10 | Draegerwerk Ag | Respirator mask with inner half mask and pollutant indicator |
US5279289A (en) | 1991-10-15 | 1994-01-18 | Kirk Gilbert M | Resuscitator regulator with carbon dioxide detector |
US5477852A (en) | 1991-10-29 | 1995-12-26 | Airways Ltd., Inc. | Nasal positive airway pressure apparatus and method |
US5269296A (en) | 1991-10-29 | 1993-12-14 | Landis Robert M | Nasal continuous positive airway pressure apparatus and method |
US5687715A (en) | 1991-10-29 | 1997-11-18 | Airways Ltd Inc | Nasal positive airway pressure apparatus and method |
US5372130A (en) | 1992-02-26 | 1994-12-13 | Djs&T Limited Partnership | Face mask assembly and method having a fan and replaceable filter |
US5233978A (en) | 1992-04-03 | 1993-08-10 | Medway | Nasal oxygen mask |
GB2266669B (en) | 1992-05-05 | 1996-03-27 | Joseph Anthony Griffiths | Breathing equipment for aircrew |
US5343878A (en) | 1992-06-08 | 1994-09-06 | Respironics Inc. | Pressure application method |
GB2267648A (en) | 1992-06-12 | 1993-12-15 | Mel | A face mask incorporating breathing equipment for aircrew |
EP0583531A1 (en) | 1992-08-18 | 1994-02-23 | Claudio Beux | An improvement to automatic breathing apparatus for underwater immersion at medium and great depth |
NZ250105A (en) | 1992-11-09 | 1996-07-26 | Monaghan Canadian Ltd | Inhalator mask; one-way valve opens upon exhalation |
DE4241272C1 (en) | 1992-12-08 | 1994-08-25 | Continental Ag | Shaped pillow to cushion the free edge of a rigid breathing mask |
US5492116A (en) | 1992-12-17 | 1996-02-20 | Respironics Inc. | Respiratory mask with floating seal responsive to pressurized gas |
US5394568A (en) | 1993-01-28 | 1995-03-07 | Minnesota Mining And Manufacturing Company | Molded head harness |
US5431158A (en) | 1993-04-20 | 1995-07-11 | Tirotta; Christopher F. | Endoscopy breathing mask |
US5542128A (en) | 1993-04-20 | 1996-08-06 | Lomas; Christiane | Headwear for supporting a breathing apparatus |
US5357951A (en) | 1993-06-02 | 1994-10-25 | Mercury Enterprises, Inc | Cardiac pulmonary resuscitator apparatus valve with integral air sampling port |
IL105930A (en) | 1993-06-07 | 1997-03-18 | Natan Oren | Therapeutic respiration device |
US5560354A (en) * | 1993-06-18 | 1996-10-01 | Rescare Limited | Facial masks for assisted respiration or CPAP |
US5685296A (en) | 1993-07-30 | 1997-11-11 | Respironics Inc. | Flow regulating valve and method |
US5474060A (en) | 1993-08-23 | 1995-12-12 | Evans; David | Face mask with gas sampling port |
US5655520A (en) | 1993-08-23 | 1997-08-12 | Howe; Harvey James | Flexible valve for administering constant flow rates of medicine from a nebulizer |
US5358340A (en) | 1993-09-20 | 1994-10-25 | Xerox Corporation | Bushing device for forming multiple pre-aligned bearing surface regions in a rotary assembly |
FR2710272B1 (en) | 1993-09-23 | 1995-12-01 | Intertechnique Sa | Quick-fitting respiratory protection equipment. |
US5517986A (en) | 1993-09-28 | 1996-05-21 | Respironics, Inc. | Two-point/four-point adjustable headgear for gas delivery mask |
US5441046A (en) | 1993-09-29 | 1995-08-15 | Respironics, Inc. | Quick release mechanism for nasal and/or oral gas delivery mask |
US5570689A (en) | 1993-09-30 | 1996-11-05 | Respironics, Inc. | Respiratory mask having a vertically adjustable spacer element that limits seal deformation on a wearer's face |
US5647355A (en) | 1993-09-30 | 1997-07-15 | Respironics, Inc. | Automatic safety valve for respiratory equipment which is counter-balanced and self-adjusting |
US5438981A (en) | 1993-09-30 | 1995-08-08 | Respironics, Inc. | Automatic safety valve and diffuser for nasal and/or oral gas delivery mask |
GB9320978D0 (en) | 1993-10-12 | 1993-12-01 | Higenbottam Timohy W | Nitric oxide treatment |
US5570682A (en) | 1993-12-14 | 1996-11-05 | Ethex International, Inc. | Passive inspiratory nebulizer system |
DE4343206A1 (en) | 1993-12-17 | 1995-06-22 | Bayer Ag | Process for the production of blanks for identity cards |
JPH07201405A (en) | 1993-12-29 | 1995-08-04 | Yazaki Corp | Waterproof plug for connector |
USD362061S (en) | 1994-01-21 | 1995-09-05 | Respironics, Inc. | Respiratory mask body |
US5540223A (en) | 1994-02-17 | 1996-07-30 | Respironics, Inc. | Respiratory mask facial seal |
US5479920A (en) | 1994-03-01 | 1996-01-02 | Vortran Medical Technology, Inc. | Breath actuated medicinal aerosol delivery apparatus |
EP0742691B1 (en) | 1994-03-03 | 1998-09-23 | Maxs Ag | Pot-shaped durable filter insert |
US5657493A (en) | 1994-03-25 | 1997-08-19 | Dacor Corporation | Diving mask with quick-release strap attachment |
US5429126A (en) | 1994-03-30 | 1995-07-04 | Bracken; Mary R. | Respiratory mask headset attachment |
US5655527A (en) | 1994-06-03 | 1997-08-12 | Respironics Inc. | Respiratory mask with floating seal responsive to pressurized gas |
US5642730A (en) | 1994-06-17 | 1997-07-01 | Trudell Medical Limited | Catheter system for delivery of aerosolized medicine for use with pressurized propellant canister |
US5509404A (en) | 1994-07-11 | 1996-04-23 | Aradigm Corporation | Intrapulmonary drug delivery within therapeutically relevant inspiratory flow/volume values |
US5666946A (en) | 1994-07-13 | 1997-09-16 | Respirogenics Corporation | Apparatus for delivering drugs to the lungs |
DE9411495U1 (en) | 1994-07-15 | 1994-10-27 | Weinmann G Geraete Med | Individual mask |
DE9411933U1 (en) | 1994-07-22 | 1994-10-27 | Weinmann G Geraete Med | Gas supply line |
KR960007018A (en) | 1994-08-17 | 1996-03-22 | 이마무라 가즈스께 | Electrostatic powder coating method and apparatus |
US5501214A (en) | 1994-09-26 | 1996-03-26 | Respironics, Inc. | Non-rebreathing valve and valve element therefor |
AUPM997394A0 (en) | 1994-12-09 | 1995-01-12 | University Of Sydney, The | Gas delivery mask |
US5533506A (en) | 1995-01-13 | 1996-07-09 | Medlife, Inc. | Nasal tube assembly |
US5538000A (en) | 1995-02-06 | 1996-07-23 | Hans Rudolph, Inc. | Airflow delivery system |
US5724965A (en) | 1995-06-06 | 1998-03-10 | Respironics Inc. | Nasal mask |
USD377089S (en) | 1995-06-06 | 1996-12-31 | Respironics, Inc. | Respiratory mask facial seal |
JPH08335475A (en) | 1995-06-08 | 1996-12-17 | Yazaki Corp | Waterproof rubber plug |
US5586551A (en) | 1995-07-17 | 1996-12-24 | Hilliard; Kenneth R. | Oxygen mask with nebulizer |
US5647357A (en) | 1995-09-08 | 1997-07-15 | Respironics, Inc. | Respiratory mask facial seal |
US5813423A (en) | 1995-11-01 | 1998-09-29 | Kirchgeorg; John | Inhalator and/or resuscitator mask adaptable for use with an adult and child |
US5657552A (en) * | 1995-11-09 | 1997-08-19 | Reineck; Rollin | Device for measuring distances on globes or maps |
US5662101A (en) | 1995-12-07 | 1997-09-02 | Respironics, Inc. | Respiratory facial mask |
US5575277A (en) | 1996-01-17 | 1996-11-19 | Johnson Worldwide Associates | Equaliztion system for a diving mask |
US5857460A (en) | 1996-03-14 | 1999-01-12 | Beth Israel Deaconess Medical Center, Inc. | Gas-sensing mask |
US5657752A (en) * | 1996-03-28 | 1997-08-19 | Airways Associates | Nasal positive airway pressure mask and method |
FR2749176B1 (en) | 1996-05-31 | 1998-07-17 | Midi Oxygene | RESPIRATORY MASK IN TWO-COMPONENT SILICONE AND PHOTOPOLYMERIZABLE RESIN |
AU3374397A (en) * | 1996-06-05 | 1998-01-05 | Scott Technologies, Inc. | Breathing apparatus |
AUPO126596A0 (en) * | 1996-07-26 | 1996-08-22 | Resmed Limited | A nasal mask and mask cushion therefor |
CA2211759A1 (en) | 1996-07-30 | 1998-01-30 | Hart-Ellerth Medical, Inc. | Light weight positive air pressure breathing apparatus |
US5836303A (en) * | 1996-09-17 | 1998-11-17 | Thermal Air Products, Inc. | Respirator apparatus |
US5924420A (en) | 1996-09-24 | 1999-07-20 | Minnesota Mining And Manufacturing Company | Full face respirator mask having integral connectors disposed in lens area |
AUPO301796A0 (en) | 1996-10-16 | 1996-11-07 | Resmed Limited | A vent valve apparatus |
US6192886B1 (en) * | 1996-10-17 | 2001-02-27 | Hans Rudolph, Inc. | Nasal mask |
US6019101A (en) | 1996-10-31 | 2000-02-01 | Sleepnet Corporation | Nasal air mask |
US5709204A (en) * | 1996-11-04 | 1998-01-20 | Lester; Richard | Aircraft passenger oxygen, survival and escape mask |
US6012455A (en) | 1996-11-14 | 2000-01-11 | Goldstein; Joseph | Nasal air delivery apparatus |
US5765553A (en) | 1996-11-27 | 1998-06-16 | Diemolding Corporation | Aerosol medication delivery facemask adapter |
US5832918A (en) | 1996-12-20 | 1998-11-10 | Pantino; Don A. | Method of making a face mask from a facial impression and of gas delivery |
US5921239A (en) | 1997-01-07 | 1999-07-13 | Sunrise Medical Hhg Inc. | Face mask for patient breathing |
US5746201A (en) | 1997-01-23 | 1998-05-05 | Nellcor Puritan-Bennett | CPAP nose mask |
AUPP855099A0 (en) | 1999-02-09 | 1999-03-04 | Resmed Limited | Gas delivery connection assembly |
US6561191B1 (en) | 1997-02-10 | 2003-05-13 | Resmed Limited | Mask and a vent assembly therefor |
AUPO504597A0 (en) | 1997-02-10 | 1997-03-06 | Resmed Limited | A mask and a vent assembly therefor |
US5937851A (en) * | 1997-02-27 | 1999-08-17 | Respironics, Inc. | Swivel device utilizing bearing clearance to allow carbon dioxide laden exhaust |
US5732695A (en) | 1997-03-11 | 1998-03-31 | Parmelee Industries | Respirator filtration device |
DE29723101U1 (en) | 1997-04-05 | 1998-05-28 | Weinmann G Geraete Med | Device for coupling to ventilation masks |
US6119694A (en) | 1997-07-24 | 2000-09-19 | Respironics Georgia, Inc. | Nasal mask and headgear |
DE19735359A1 (en) | 1997-08-14 | 1998-01-29 | Konrad Kleehaupt | Breathing mask |
US6135109A (en) | 1997-08-15 | 2000-10-24 | Blasdell; Richard J. | Inhalation apparatus |
US5878742A (en) | 1997-09-11 | 1999-03-09 | Figueredo; Joseph P. | Airvisor delivery system |
US6119693A (en) * | 1998-01-16 | 2000-09-19 | Resmed Limited | Forehead support for facial mask |
DE29810846U1 (en) | 1998-06-17 | 1998-08-20 | Mpv Truma Ges Fuer Medizintech | Nasal ventilation mask |
US6584976B2 (en) * | 1998-07-24 | 2003-07-01 | 3M Innovative Properties Company | Face mask that has a filtered exhalation valve |
US6637434B2 (en) | 1998-10-30 | 2003-10-28 | Linda J. Noble | Nasal gas delivery system and method for use thereof |
US6309438B1 (en) | 1998-11-16 | 2001-10-30 | Mine Safety Appliances Company | Filter unit and dust-proof mask therewith |
JP3641151B2 (en) * | 1999-02-04 | 2005-04-20 | 帝人株式会社 | Respirator for therapeutic gas injection |
US6478026B1 (en) | 1999-03-13 | 2002-11-12 | Thomas J. Wood | Nasal ventilation interface |
US6595215B2 (en) | 2000-03-13 | 2003-07-22 | Innomed Technologies, Inc. | Ventilation interface for sleep apnea therapy |
US6435181B1 (en) * | 1999-08-30 | 2002-08-20 | Sunrise Medical Hhg Inc. | Respiratory mask with adjustable exhaust vent |
US6644316B2 (en) * | 1999-10-12 | 2003-11-11 | Mallinckrodt Inc. | Variable aperture venting for respiratory mask |
US6668830B1 (en) | 1999-11-19 | 2003-12-30 | Mallinckrodt Inc. | Low noise exhalation port for a respiratory mask |
ES2178980T3 (en) | 2000-06-14 | 2008-06-16 | FISHER & PAYKEL HEALTHCARE LIMITED | NASAL MASK. |
AUPQ821500A0 (en) | 2000-06-19 | 2000-07-13 | Australian Centre For Advanced Medical Technology Ltd | Mask |
US6431172B1 (en) | 2000-10-20 | 2002-08-13 | Mallinckrodt Inc. | Nasal cannula with inflatable plenum chamber |
US6851425B2 (en) | 2001-05-25 | 2005-02-08 | Respironics, Inc. | Exhaust port assembly for a pressure support system |
ITMI20020121A1 (en) | 2002-01-24 | 2003-07-24 | Starmed S R L | REFINEMENTS IN CASES FOR ARTIFICIAL BREATHING WITHOUT THE HELM OF MASKS |
US7156096B2 (en) | 2002-07-15 | 2007-01-02 | Landis Robert M | Dynamic infant nasal CPAP system and method |
NZ562412A (en) | 2003-02-21 | 2009-02-28 | Resmed Ltd | Nasal assembly for pillow mask |
US20040182397A1 (en) | 2003-03-21 | 2004-09-23 | Innomed Technologies, Inc. | Nasal interface including ventilation insert |
US7493902B2 (en) | 2003-05-30 | 2009-02-24 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
US20050011524A1 (en) | 2003-07-17 | 2005-01-20 | Marguerite Thomlinson | Nasal interface apparatus |
US6997187B2 (en) | 2003-09-10 | 2006-02-14 | Innomed Technologies, Inc. | Nasal interface and system including ventilation insert |
US7472707B2 (en) | 2003-08-06 | 2009-01-06 | Innomed Technologies, Inc. | Nasal interface and system including ventilation insert |
US7353826B2 (en) | 2003-08-08 | 2008-04-08 | Cardinal Health 205, Inc. | Sealing nasal cannula |
US7357136B2 (en) | 2003-08-18 | 2008-04-15 | Ric Investments, Llc | Patient interface assembly and system using same |
US7856982B2 (en) | 2004-03-11 | 2010-12-28 | Ric Investments, Llc | Patient interface device |
-
2000
- 2000-05-15 US US09/570,907 patent/US6581594B1/en not_active Expired - Lifetime
-
2003
- 2003-03-03 US US10/377,110 patent/US6823865B2/en not_active Expired - Lifetime
-
2004
- 2004-11-01 US US10/976,874 patent/US7159587B2/en not_active Expired - Lifetime
-
2006
- 2006-04-28 US US11/413,080 patent/US7926487B2/en not_active Expired - Fee Related
-
2011
- 2011-03-15 US US13/064,266 patent/US8528558B2/en not_active Expired - Fee Related
-
2013
- 2013-08-26 US US13/975,601 patent/US20130340761A1/en not_active Abandoned
-
2016
- 2016-08-30 US US15/251,568 patent/US20160367782A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6357440B1 (en) * | 1999-06-16 | 2002-03-19 | Mallinckrodt Inc. | Pliable respiratory mask |
US6581594B1 (en) * | 2000-05-15 | 2003-06-24 | Resmed Limited | Respiratory mask having gas washout vent and gas washout vent for respiratory mask |
US6659102B1 (en) * | 2002-07-23 | 2003-12-09 | Anthony L. Sico | Oxygen mask filter system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020170207A1 (en) * | 2019-02-22 | 2020-08-27 | ResMed Pty Ltd | Textile vent assembly |
US11433197B2 (en) | 2019-02-22 | 2022-09-06 | ResMed Pty Ltd | Textile vent assembly |
US11896761B2 (en) | 2019-02-22 | 2024-02-13 | ResMed Pty Ltd | Textile vent assembly |
WO2022050852A1 (en) * | 2020-09-04 | 2022-03-10 | Fisher & Paykel Healthcare Limited | Patient interface for delivery of gas |
Also Published As
Publication number | Publication date |
---|---|
US6581594B1 (en) | 2003-06-24 |
US20060196509A1 (en) | 2006-09-07 |
US20130340761A1 (en) | 2013-12-26 |
US7159587B2 (en) | 2007-01-09 |
US8528558B2 (en) | 2013-09-10 |
US6823865B2 (en) | 2004-11-30 |
US20030164170A1 (en) | 2003-09-04 |
US7926487B2 (en) | 2011-04-19 |
US20050092326A1 (en) | 2005-05-05 |
US20110162651A1 (en) | 2011-07-07 |
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Legal Events
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AS | Assignment |
Owner name: RESMED LIMITED, AUSTRALIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HENRY, ROBERT EDWARD;CRUMBLIN, GEOFFREY;DREW, JOANNE ELIZABETH;AND OTHERS;SIGNING DATES FROM 20131104 TO 20131115;REEL/FRAME:039586/0586 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |