Patent ID: 8696590
Filing Date: 2014-04-15
Classification: A61B,A61M

Abstract:
1. A small animal capnometry apparatus configured for use with a monitoring equipment, the apparatus comprising: a first chamber comprising a first volume and a first cross-sectional dimension; a second chamber in fluid communication with the first chamber, the second chamber comprising a second volume and a second cross-sectional dimension, the second chamber being sized to receive a nare of a small animal; a respiratory gas sampling conduit having a first end and a second end, the first end coupled to the second chamber proximate a small animal nare positioned therein, the second end for coupling to a monitoring system to provide a respiratory gas sample from a small animal nare; an outer fixed cylinder arranged and configured around the first chamber and the second chamber, the outer fixed cylinder defining an anesthesia access port; an anesthesia gas exhaust conduit and an anesthesia gas inlet conduit, the anesthesia gas inlet conduit comprising a delivery end positioned between the outer fixed cylinder and the first and second chambers, wherein the second chamber defines at least one open port configured to allow anesthesia gas to diffuse into the second chamber for inspiration by a small animal, the first end of the respiratory gas sampling conduit being positioned closer to a small animal nare than the at least one open port; and a connector component disposed between the first chamber and the second chamber, and spaced apart from the at least one open port, the connector component defining a third cross-sectional dimension smaller than each of the first cross-sectional dimension and the second cross-sectional dimension.