Liquid absorbing filter assembly and system using same

Details Liquid absorbing filter assembly and system using same Liquid absorbing filter assembly and system using same

2006-11-21

2006-11-21

Bennett, Henry (Department: 3743)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

Reexamination Certificate

active

07137390

ABSTRACT:
A filter assembly for use in sidestream gas sampling assembly. The filter assembly of the present invention includes a hydrophilic liner lining the inner perimeter of a housing for wicking moisture from the gases to be monitored prior to the gases reaching a sensing mechanism. The filter further includes a hydrophobic member positioned downstream of the hydrophilic liner. The hydrophobic disk acts as a second line of defense against moisture reaching the sensing mechanism. In one embodiment, the filter further include an absorbent layer positioned between the cylindrical housing and the hydrophilic layer to aid in wicking moisture from the gas stream. In a further embodiment, the hydrophobic disk is eliminated and the hydrophilic member is situated such that gas entering the filter assembly must pass through at least a portion the hydrophilic member.

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