Heating box has lid with hinge mobility/lid weight enabling gap to form under pressure in box to allow used air out when connector supplied with normal flow of hot air from patient heater

摘要

The device has a connector (5) via which temperature-controlled hot air is fed into the interior and an outlet (3) for used air to escape from the box. The upper surface of the box is hinged to form a lid (2) whose hinge (4) mobility and lid weight are selected so that a gap is formed by the pressure in the box to allow the escape of used air when the connector is supplied with a normal flow of hot air from a patient heater.