Regenerative anaesthetic agent reflector and carbon dioxide absorber
Original Publication Date: 2002-Apr-01
Included in the Prior Art Database: 2003-Jul-23
Background It is known to provide a combined anaesthetic agent reflector and carbon dioxide (CO2) absorber in a single unit. Internal gas flow paths of this unit are arranged so that during an expiration phase expira- tion gas passes only through the reflector material and during an inspiration phase inspiration gas passes through both the reflector and the absorber. In this manner any CO2 from the expiration gas that remains within the unit’s deadspace is not re- circulated to the patient. The deadspace is relatively small, < 100ml, so that the known unit employs only a small amount of soda lime which needs to be re- placed frequently. Usually the entire unit is disposed of when the soda lime becomes saturated with CO2.