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US 9,872,967 B2Granted
Components for medical circuits
AssigneeFisher & Paykel Healthcare Limited
InventorsDavid John Sims, Enrico Alvarez Garcia, Peter Kenneth Graham
Life of this patent
Estimating the term…
Abstract
Condensation or “rain-out” is a problem in medical circuits and previous attempts to manage and/or prevent rain-out have resulted in relatively expensive and/or difficult to manufacture medical circuit components. The subject patent provides an improved medical circuit component for managing rain-out. In particular the component may be an improved breathing tube, or insufflation system limb comprising a helically corrugated tube preferably incorporating a heater wire.
Claims17
A component comprising:
- a corrugated tube wherein the corrugation profile comprises a plurality of alternating outer crests and inner troughs, each of the plurality of outer crests including local troughs comprising an inward dip,
- wherein the corrugated tube is a medical tube configured to provide a pathway between components of a medical circuit,
- wherein the corrugated tube transitions from a helical corrugation profile to an annular corrugation profile, and
- wherein the annular corrugation profile includes angled channels to allow the first heater wire and second heater wire to step over each of the annular rings of the annular corrugation profile;
- a first heater wire associated with at least one inward dip of the plurality of outer crests;
- and
- a second heater wire associated with at least one of the plurality of inner troughs.
4 more elements
Dependencies are inferred from the claim text.