Patent · US Active

Method of conveying breathing gases to or from a patient

US7958891B2 · kind B2 · utility

29Cited by

60References

7Claims

0Family size

Assignee

Fisher & Paykel Healthcare Limited · NZ

Inventors

Daniel John Smith · Auckland, NZ
David Peter Baldwin · Auckland, NZ

Key dates

Filing date	May 6, 2009
Grant date	Jun 14, 2011
Priority date	—
Expiry date	May 6, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29D23/00
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A method of conveying humid breathing gases from a patient through a breathable breathing tube. The breathing tube includes a heater associated, at least in part, with a portion of hydrophilic material. The purpose of the heater is to evaporate any condensed liquid collecting in the conduit, which is first sucked up by the hydrophilic material. The heated wick reduces the risk of collected water being passed to the patient and causing choking fits or discomfit. It is preferred that the heated wick lies freely in the conduit to settle at low points in the conduit where condensation may collect.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.