Patent ID: 8146590

Claim:
A humidification system for a breathing circuit, comprising: a humidification section, a flow section, a control section, a reservoir, and a pump, wherein the humidification section is constructed using one of hydrophobic fiber and hydrophobic membrane wherein heated water can pass through inside one of the hydrophobic fiber and the hydrophobic membrane, the humidification section being arranged inside an inspiration tube of the breathing system, the humidification section being constructed to allow the heated water to pass through inside one of the hydrophobic fiber and the hydrophobic membrane to supply moisture derived from the heated water into intake air flowing inside the inspiration tube and flowing outside one of the hydrophobic fiber and the hydrophobic membrane, the flow section comprising a supply section for supplying the heated water to the humidification section, and a delivery section for delivering the heated water that has been supplied to the humidification section to the reservoir, the control section being configured to detect abnormality using difference information for the heated water temperature of the supply section and the heated water temperature of the delivery section, and the pump being configured to apply pressure to the heated water for delivering the heated water to the supply section in positive pressure so that pressure of the heated water delivered to the flow section and the humidification section is higher than inner pressure in the inspiration tube of the breathing system.