Patent 11135391 was granted and assigned to Fisher & Paykel Healthcare on October, 2021 by the United States Patent and Trademark Office.
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.