Patent ID: 8800553
Filing Date: 2014-08-12
Classification: A61B,A61M,Y10T

Abstract:
1. A respirator or anesthesia apparatus for the artificial respiration of a patient, the apparatus comprising: a gas delivery device; at least one gas line for forming a breathing air line system; and a volume flow measuring device for gas volume flow measurement according to sensed differential pressure, the volume flow measuring device including a flow channel, a first pressure-measuring point and a second pressure-measuring point, wherein the second pressure-measuring point is arranged in the direction of flow of the gas to be measured after the first pressure-measuring point at the flow channel, the flow channel being divided into at least two separate partial flow channels in the direction of flow of the gas to be measured between the first pressure-measuring point and the second pressure-measuring point, wherein the flow channel is manufactured from a thermoplastic with a separate bottom part and with a separate cover part, which separate bottom part and separate cover part are joined together at joining surfaces of the separate bottom part and the separate cover part by a connection in substance, wherein, the at least two separate partial flow channels comprise a first curved flow channel, with inner walls and outer walls curved in the direction of flow of the gas to be measured and a second curved flow channel, with inner and outer walls curved in the direction of flow of the gas to be measured, wherein the at least two separate partial flow channels are formed around a common cylinder that has a curvature defined by the inner walls and wherein the outer walls traverse an essentially constant curvature directed eccentrically in relation to the curvature of the common cylinder.