Breathing tube

摘要

Condensation or “rain-out” is a problem in breathing circuits and especially neonatal breathing circuits. The subject patent provides an improved breathing tube component for managing rain-out particularly in neonatal applications. In particular the breathing tube has a smooth inner bore, and an outer insulating layer containing stagnant gas and a heater wire.

主权项

1. A breathing tube comprising:
a first inner tube defining a breathing gases passage having a smooth inner surface; a second outer tube surrounding said first inner tube and defining a space between said first inner tube and said second outer tube, said space including insulation comprising a substantially stagnant gas; a heater located outside said inner surface of said first inner tube and in contact with said first inner tube at a plurality of locations; said second outer tube being independently formed and separate from said first inner tube and said first inner tube positioned in a separated arrangement within said second outer tube along a non-tortuous path, and wherein a first end of said breathing tube includes a first end connector and a second end of said breathing tube includes a second end connector, said first and second end connectors each separately receives a respective end of each of said inner and outer tubes, each of said inner and outer tubes being maintained in a separated arrangement by said first and second end connectors.