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US 12,102,768 B2Granted
Breathing circuit components for respiratory apparatus
AssigneeFisher & Paykel Healthcare Limited
InventorsCarlos Alberto Lopez Muedano, Nathan Lee Gray
Life of this patent
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Abstract
In one embodiment, a breathing circuit component is provided and includes: an inlet; an outlet; and an enclosing wall defining a gases passageway between the inlet and the outlet, at least a region of the wall comprising a membrane that allows the passage of water vapour without substantially allowing the passage of liquid water or respiratory gases, wherein, the membrane has a thickness of about 35 to 45 micrometers.
Claims20
A breathing gas conduit for a respiratory apparatus including:
- an inlet;
- an outlet;
- an enclosing wall defining a gases passageway between the inlet and the outlet, at least a region of the enclosing wall comprising a membrane that allows passage of water vapour without substantially allowing a passage of liquid water or respiratory gases, the membrane comprising a membrane wall thickness;
- and
- a bead helically wound around the enclosing wall, the bead comprising a bead pitch defined by a distance between adjacent winds of the bead,
- wherein the breathing gas conduit comprises a ratio of bead pitch to membrane wall thickness between 1:0.0080 to 1:0.0128 so as to reduce noise production when the breathing gas conduit is moved, flexed, or bent.
3 more elements
A breathing circuit assembly including:
- a patient interface;
- and
- a breathing circuit component comprising:
- an inlet,
- an outlet,
- an enclosing wall defining a gases passageway between the inlet and the outlet, at least a region of the enclosing wall comprising a membrane that allows passage of water vapour without substantially allowing a passage of liquid water or respiratory gases, the membrane comprising a membrane wall thickness, and
- a bead helically wound around the enclosing wall, the bead comprising a bead pitch defined by a distance between adjacent winds of the bead, wherein the breathing circuit component comprises a ratio of bead pitch to membrane wall thickness between 1:0.0080 to 1:0.0128 so as to reduce noise produced by movement of the breathing circuit component when in use.
4 more elements
A respiratory apparatus comprising:
- a gas source;
- an inspiratory gas conduit;
- a breathing gas conduit comprising:
- an inlet,
- an outlet,
- an enclosing wall defining a gases passageway between the inlet and the outlet, at least a region of the enclosing wall comprising a membrane that allows a passage of water vapour without substantially allowing passage of liquid water or respiratory gases, the membrane comprising a membrane wall thickness, and
- a bead helically wound around the enclosing wall, the bead comprising a bead pitch defined by a distance between adjacent winds of the bead, wherein the breathing gas conduit has a ratio of bead pitch to membrane wall thickness between 1:0.0080 to 1:0.0128 so as to reduce noise production from movement of the breathing gas conduit;
- a patient interface;
- and
- a section of a gas conduit configured to be positioned between the inspiratory gas conduit and the patient interface.
7 more elements
Dependencies are inferred from the claim text.