Patent ID: 6564799
Filing Date: 2003-05-20
Classification: A61M,Y10S

Abstract:
A muitilumen filter device for use with a unilimb respiratory circuit apparatus for providing inspiratory gases to a patient and for receiving expiratory gases therefrom, comprising:a unitary filter housing having a proximal end and a distal end, said filter housing containing a first filter chamber and a second filter chamber, first filter means in said first filter chamber and second filter means in said second filter chamber, said filter housing having a proximal first lumen and a proximal second lumen at said proximal end of said unitary filter housing, said proximal first lumen forming a proximal inspiratory fluid path, and said proximal second lumen forming a proximal expiratory fluid path; said proximal first lumen being in fluid communication with said first filter chamber, and said proximal second lumen being in fluid communication with said second filter chamber, and said filter housing having a distal first lumen and a distal second lumen at said distal end of said unitary filter housing, said distal first lumen forming a distal inspiratory fluid path and being in fluid communication with said first filter chamber; and said distal second lumen forming a distal expiratory fluid path and being in fluid communication with said second filter chamber, wherein fluid passing between said proximal first lumen and said distal first lumen must pass through said first filter means in said first filter chamber, and fluid passing between said proximal second lumen and said distal second lumen must pass through said second filter means in said second filter chamber, said inspiratory and expiratory fluid paths being independent of each other and remaining independent between said filter means and en assisted ventilation device when said filter device is operatively connected thereto and being sufficient for providing assisted ventilation to a patient.