Patent ID: 8820325
Filing Date: 2014-09-02
Classification: A61M

Abstract:
1. A bymixer device connectable to a patient ventilation conduit and useable for sampling, sensing or analyzing mixed expired gasses from a plurality of the patient's consecutive breaths, said device comprising: an inflow port connectable to the patient ventilation conduit such that expired gases from a plurality of consecutive breaths enter the inflow port; a main flow channel; a mixing chamber having a hollow inner gas accumulation space of adjustable volume; an outflow port; means for sampling, sensing or analyzing mixed expired gasses from the hollow inner gas accumulation space of the mixing chamber; and apparatus for adjusting the volume of the hollow inner gas accumulation space of the mixing chamber; said bymixer device being constructed such that i) most of the gas which enters the inflow port will pass into the main flow channel; ii) a portion of the gas which enters the inflow port will pass into the mixing chamber such that expired gasses from a plurality of consecutive breaths accumulate in the hollow inner gas accumulation space of the mixing chamber and iii) gasses that exit the main flow channel and mixing chamber will subsequently flow out of the outflow port.