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.
Claims41
A component comprising:
- a helically corrugated tube wherein the corrugation profile comprises alternating outer crests and inner troughs,
- a heater wire associated with said outer crests,
- wherein each said outer crest comprises a peak region, and the peak rels include local troughs comprising a small inward dip, and
- said heater wire associated with said outer crests is located within said dip.
(canceled)
(canceled)
(canceled)
23-40. (canceled)
A method of forming a component comprising:
- extruding a tube,
- passing said extruded tube into a corrugator and forming corrugations in said extruded tube having a corrugation profile comprising alternating outer crests and inner troughs, and
- wherein each said outer crest comprises a peak region, and the peak regions include local troughs comprising a small inward dip,
- wherein said corrugations are helical, and
- wherein said method further comprises a step of winding at least one heater wire into said local trough.
(canceled)
(canceled)
(canceled)
(canceled)
Dependencies are inferred from the claim text.