Patent ID: 6769431
Filing Date: 2004-08-03
Classification: A61M,B29C,B29L

Abstract:
A breathing circuit component including an inlet, an outlet and an enclosing wall defining a gases passageway between said inlet and said outlet, at least a region of said wall being of a material that allows the passage of water vapour without allowing the passage of liquid water or respiratory gases, andsaid gases passageway is an expiratory conduit and said region or regions is or are distributed over the length of said conduit, and said conduit includes at least one helically wound polymer tape or strip, part or all of said strip being of a material that allows the passage of water vapour without allowing the passage of liquid water or respiratory gases, respective edges of adjacent turns of said strip being adjoining or overlapping and bonded, and said conduit includes lateral reinforcement against crushing wherein said lateral reinforcement is a helical bead disposed over said adjoining or overlapping edges between turns of strip, and said conduit includes longitudinal reinforcement against longitudinal stretching of said conduit.