title: Solar-powered ventilator alarm.
abstract: A ventilator alarm device is described with some unique features. It has a very low current consumption. This allows prolonged operation from small batteries which may be recharged from the ambient light in the room. The device is automatically activated and de-activated by the pressure wave from the ventilator. No external switches or other controls are necessary. The very small size means that the device can be directly attached to a ventilator 'in line' with the ventilator circuit. There are no tubing connexions between the ventilator and the alarm device and no separate shelf-space is required.
mesh_terms: D000056:Accident Prevention; D011211:Electric Power Supplies; D004582:Electronics, Medical; D011175:Positive-Pressure Respiration / Q000295:instrumentation*; D012449:Safety; D013472:Sunlight