NZ780366B2 - Patient Interface With Foam Seal-Forming Structure - Google Patents

Patient Interface With Foam Seal-Forming Structure Download PDF

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Publication number
NZ780366B2
NZ780366B2 NZ780366A NZ78036616A NZ780366B2 NZ 780366 B2 NZ780366 B2 NZ 780366B2 NZ 780366 A NZ780366 A NZ 780366A NZ 78036616 A NZ78036616 A NZ 78036616A NZ 780366 B2 NZ780366 B2 NZ 780366B2
Authority
NZ
New Zealand
Prior art keywords
cushion
cushion assembly
patient
support structure
assembly
Prior art date
Application number
NZ780366A
Other versions
NZ780366A (en
Inventor
Shannon Day
Matthew Eves
Lemmy Nga
Gerard Michael Rummery
Rupert Christian Scheiner
Original Assignee
ResMed Pty Ltd
Filing date
Publication date
Priority claimed from PCT/AU2016/050228 external-priority patent/WO2016149769A2/en
Application filed by ResMed Pty Ltd filed Critical ResMed Pty Ltd
Priority claimed from NZ740229A external-priority patent/NZ740229A/en
Publication of NZ780366A publication Critical patent/NZ780366A/en
Publication of NZ780366B2 publication Critical patent/NZ780366B2/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • A61M16/0069—Blowers or centrifugal pumps the speed thereof being controlled by respiratory parameters, e.g. by inhalation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0611—Means for improving the adaptation of the mask to the patient with a gusset portion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0616—Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0616—Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
    • A61M16/0622—Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure having an underlying cushion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—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. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0666—Nasal cannulas or tubing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0683—Holding devices therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/08—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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0875—Connecting tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/105—Filters
    • A61M16/1055—Filters bacterial
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/105—Filters
    • A61M16/106—Filters in a path
    • A61M16/107—Filters in a path in the inspiratory path
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A61M16/109—Preparation of respiratory gases or vapours by influencing the temperature the humidifying liquid or the beneficial agent
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A61M16/1095—Preparation of respiratory gases or vapours by influencing the temperature in the connecting tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • 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
    • A61M2207/00—Methods of manufacture, assembly or production

Abstract

cushion assembly for a patient interface for sealed delivery of a flow of air at a continuously positive pressure with respect to ambient air pressure to an entrance to a patient's airways including at least entrance of a patient's nares, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH20 to about 30 cmH20 above ambient air pressure in use, throughout the patient's respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing, the cushion assembly comprising: a foam cushion; and an elastomeric support portion configured to support the foam cushion and form at least part of a chamber together with the foam cushion, the elastomeric support portion comprising: a support structure that forms a continuous perimeter around the chamber; and a resiliently flexible folded section that forms a pivotable seat for the foam cushion and extends from the support structure toward an interior of the chamber, an outer perimeter of the folded section being anchored to the support structure so that the outer perimeter of the folded section is fixed relative to the support structure while an inner perimeter of the folded section is movable relative to the support structure, wherein the folded section further comprises a reinforced section with a supplemental support that anchors a span of the folded section to the support structure, wherein the reinforced section of the folded section is located at a region of the cushion assembly that is configured to be laterally adjacent to the patient’s nasal ridge when the cushion assembly is mounted on the patient’s face, and wherein the cushion assembly is bisected by a sagittal plane having a line that is tangent to the foam cushion only at a superior tangent point and an inferior tangent point.

Claims (19)

1. A n assembly for a patient interface for sealed delivery of a flow of air at a continuously positive pressure with respect to ambient air re to an entrance to a t's airways including at least entrance of a patient's nares, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH20 to about 30 cmH20 above ambient air pressure in use, hout the patient's respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing, the n assembly comprising: a foam cushion; and an elastomeric support portion configured to t the foam cushion and form at least part of a chamber together with the foam cushion, the elastomeric support portion comprising: a support structure that forms a continuous perimeter around the r; and a resiliently flexible folded section that forms a pivotable seat for the foam n and extends from the support structure toward an interior of the chamber, an outer perimeter of the folded section being anchored to the support structure so that the outer perimeter of the folded section is fixed relative to the support structure while an inner perimeter of the folded section is movable relative to the support structure, wherein the folded section further comprises a reinforced section with a supplemental support that anchors a span of the folded section to the support structure, wherein the reinforced section of the folded section is located at a region of the cushion assembly that is configured to be laterally nt to the patient’s nasal ridge when the cushion assembly is mounted on the patient’s face, and n the cushion assembly is bisected by a al plane having a line that is tangent to the foam cushion only at a superior t point and an inferior tangent point.
2. The cushion assembly of claim 1, wherein the superior tangent point is located within a saddle-shaped region in which the foam cushion is saddle-shaped.
3. The cushion assembly of any one of claims 1 to 2, wherein the pivotable seat varies in size in different s of the cushion assembly.
4. The cushion assembly of any one of claims 1 to 3, wherein an elastomeric thickness of the support structure of the meric support portion varies in different s of the cushion assembly.
5. The cushion assembly of any one of claims 1 to 4, n the elastomeric wall thickness of the support structure of the elastomeric support portion is thinnest in a nasal bridge region of the cushion assembly, the nasal bridge region including the superior tangent point.
6. The cushion assembly of any one of claims 1 to 5, wherein the elastomeric wall thickness of the support structure of the elastomeric support portion is thicker at the superior tangent point than at the inferior tangent point.
7. The cushion assembly of any one of claims 1 to 6, wherein a depth of the support structure of the meric support portion varies in different regions of the cushion assembly.
8. The cushion ly of any one of claims 1 to 7, wherein the support structure of the support n is less at the inferior tangent point than at the superior tangent point.
9. The cushion assembly of any one of claims 1 to 8, wherein the depth of the support structure of the support portion is least at an ediate region n the inferior tangent point and the superior tangent point.
10. The n assembly of claim 9, wherein the elastomeric wall thickness of the support structure of the elastomeric support portion is thickest at the intermediate region.
11. The cushion assembly of any one of claims 1 to 10, wherein the foam cushion is configured to roll relative to the elastomeric support portion in response to a ssive force.
12. The cushion assembly of any one of claims 1 to 11, wherein a depth of the support ure of the elastomeric support portion varies in different regions of the cushion assembly.
13. The n assembly of any one of claims 1 to 12, wherein the foam cushion is configured to overhang the folded section of the elastomeric support n.
14. The cushion assembly of any one of claims 1 to 13, wherein foam cushion is more compliant at the superior tangent point than other regions of the cushion assembly.
15. The cushion assembly of any one of claims 1 to 14, n the reinforced section of the folded section is one of a plurality reinforced sections of the folded section located at regions of the cushion assembly that are configured to be laterally adjacent to the patient’s nasal ridge when the cushion ly is mounted on the patient’s face.
16. The cushion ly of any one of claims 1 to 15, wherein the supplemental support is in the form of a rib.
17. The cushion assembly of claim 16, wherein the rib is compressible and is configured to act in tension when the chamber is pressurized.
18. A patient ace comprising: the cushion assembly of any one of claims 1 to 17; a rigid shell removably connected to the cushion ly; and ar removably attached to the rigid shell.
19. A CPAP system comprising: patient interface according to claim 18; a flow generator configured to pressurize a flow of gas; and an air delivery tube configured to deliver the pressurized gas to the patient interface. 3000 \\\\\\\\\\\“lm uu|\\“““
NZ780366A 2016-09-23 Patient Interface With Foam Seal-Forming Structure NZ780366B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201562222503P 2015-09-23 2015-09-23
PCT/AU2016/050228 WO2016149769A2 (en) 2015-03-25 2016-03-24 Patient interface with blowout prevention for seal-forming portion
US201662377251P 2016-08-19 2016-08-19
NZ740229A NZ740229A (en) 2015-09-23 2016-09-23 Patient interface with foam seal-forming structure

Publications (2)

Publication Number Publication Date
NZ780366A NZ780366A (en) 2024-08-30
NZ780366B2 true NZ780366B2 (en) 2024-12-03

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