Patient interface
Inventors
Scheiner, Rupert Christian • Hitchcock, William Laurence • Barbara, Anthony Paul • Barlow, Adam Francis • Edwards, Craig David • Goldspink, Lachlan Richard • Haskard, Kirrily Michele • Lee, Murray William • May, Frederick Arlet • Rummery, Gerard Michael • Shanmuga Sundara, Shiva Kumar • Tan, Chia Ik • Wagner, Stewart Joseph • Wells, Alicia Kristianne • Forrester, Martin • Jourdan, Ralph
Assignees
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Publication Number
US-11931513-B2
Publication Date
2024-03-19
Expiration Date
Abstract
A patient interface for delivery of a supply of pressurised air or breathable gas to an entrance of a patient's airways comprising: a cushion member that includes a retaining structure and a seal-forming structure permanently connected to the retaining structure; a frame member attachable to the retaining structure; and a positioning and stabilising structure attachable to the frame member.
Core Innovation
The invention relates to a patient interface configured for sealed delivery of pressurized, breathable gas to a patient's nares at a continuously positive pressure with respect to ambient air pressure throughout the patient's respiratory cycle while the patient is sleeping, to ameliorate sleep disordered breathing. The patient interface includes a frame, a seal-forming structure connected to the frame, a gas washout vent, and a positioning and stabilising structure including a strap connected to the frame.
The seal-forming structure includes an opening configured to deliver pressurized, breathable gas to the patient's airway and is shaped to create seal contact with the patient's nose and face using first, second, and third regions with thickness differences. The seal-forming structure has a curved shape from each first region through the adjacent second region to the adjacent third region, with an apex of each curved shape located in each second region, and the seal portions include regions proximal to the patient's upper lip and opposite the opening across the opening.
The gas washout vent includes at least one vent hole configured to allow flow of patient exhaled CO2 to be discharged to ambient from the patient interface. The positioning and stabilising structure is configured to maintain the seal-forming structure in sealing contact with the patient's face while maintaining therapeutic pressure at the patient's nares during sleep.
Claims Coverage
The provided material identifies one independent claim and associated dependent claims. The independent claim covers a continuously positive pressure patient interface with a multi-region curved seal-forming structure, a gas washout vent for exhaled CO2 discharge, and a strap-based positioning and stabilising structure to maintain sealed contact and therapeutic pressure during sleep.
Continuously positive pressure sealed nasal patient interface for sleep disordered breathing
A patient interface configured for sealed delivery of pressurized, breathable gas to a patient's nares at a continuously positive pressure with respect to ambient air pressure throughout the patient's respiratory cycle while the patient is sleeping, to ameliorate sleep disordered breathing, comprising a frame, a seal-forming structure, a gas washout vent, and a positioning and stabilising structure including a strap connected to the frame to maintain sealing contact and therapeutic pressure while sleeping.
Multi-region curved seal-forming structure for facial contact
A seal-forming structure connected to the frame with an opening configured to deliver the supply of pressurized, breathable gas to the patient's airway, including first, second, and third regions with thickness differences, wherein the seal-forming structure has a curved shape from each first region through the adjacent second region to the adjacent third region with an apex of each curved shape located in each second region.
Gas washout vent for exhaled CO2 discharge to ambient
A gas washout vent including at least one vent hole configured to allow a flow of patient exhaled CO2 to be discharged to ambient from the patient interface.
Strap-based positioning and stabilising to maintain therapeutic seal pressure
A positioning and stabilising structure including a strap connected to the frame, configured to maintain the seal-forming structure in sealing contact with the patient's face while maintaining the therapeutic pressure at the patient's nares during sleep.
The inventive coverage centers on a sealed, continuously positive pressure nasal patient interface for sleep disordered breathing, using a multi-region curved seal-forming structure with thickness relationships and facial contact regions, a gas washout vent with vent holes for exhaled CO2 discharge to ambient, and strap-based positioning to maintain sealing contact and therapeutic pressure during sleep.
Stated Advantages
Maintains therapeutic pressure throughout the patient's respiratory cycle while the patient is sleeping.
Ameliorates sleep disordered breathing.
Discharges patient exhaled CO2 to ambient from the patient interface.
Maintains the seal-forming structure in sealing contact with the patient's face while maintaining the therapeutic pressure at the patient's nares.
Documented Applications
A patient interface for sealed delivery of pressurized, breathable gas at continuously positive pressure to a patient's nares while the patient is sleeping to ameliorate sleep disordered breathing.
Use of the patient interface to discharge patient exhaled CO2 to ambient via a gas washout vent.
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