1. Field of the Invention
The present invention is directed to a flow transducer muff for positioning a substantially right-angled parallelepiped-shaped flow transducer in the expiration channel of a ventilator, of the type having first and second muff halves which are connectable on opposite sides of the flow transducer.
2. Description of the Prior Art
Expired gas flow is measured in a flow transducer at the expiration side of a ventilator. The flow transducer is maintained in position in the expiration channel by means of a flow transducer muff, which forms a gas-tight connection to the flow transducer. Such a flow transducer muff is described, for example, in the Operating Manual (page 10: 2-3, August 1988) for the Servo Ventilator 900C, sold by Siemens-Elema AB. In general, known flow transducer muffs consist of two halves which are connected on opposite sides of the flow transducer.
The two muff halves in known components are identical in shape, and there is thus a risk that the flow transducer could be installed, after cleaning, in a reversed position in the ventilator.