Fisher & Paykel Healthcare Limited

Oliver Samuel Steiner

Po-Yen Liu

Ivan Chih-Fan Teng

Anthony James Newland

Stefan Leo Van Workum

Peter Alan Seekup

Ho Shing Lo

The present disclosure provides for an improved method of determining a water out condition in a humidified gases supply apparatus. The method includes a two-step process including a primary determination of a water out condition and a secondary determination of a water out condition. This primary determination is made during observation of the normal operation of the apparatus. During the secondary determination the method takes temporary control over the humidifying part of the apparatus. The secondary determination confirms or contradicts the primary determination.

Water out alarm determination

Various control methods can indirectly determine incorrect connections between components in a respiratory therapy system. For example, incorrect connections can occur between a patient interface, a humidifier and/or a gases source. The methods can indirectly detect if reverse flow conditions or other error conditions exist. A reverse flow condition can occur when gases flows in a direction different from an intended direction of flow. The methods can be implemented at the humidifier side, at the gases source side, or both.

Systems and methods of detecting incorrect connections in a humidification system

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Auckland, New Zealand

Oliver Samuel Steiner