Heat and moisture exchange unit with resistance indicator

Details Heat and moisture exchange unit with resistance indicator Heat and moisture exchange unit with resistance indicator

A - Human Necessities

61

M

A61M 16/10 (2006.01) B01D 35/143 (2006.01)

Patent

CA 2725645

A heat and moisture exchange (HME) unit (50) including a housing (52), a heat and moisture retaining media (54) (HM media), and a resistance indicator (56). The housing (52) forms a first port (58), a second port (60), and an intermediate section (62). The intermediate section (62) extends between the first (58) and second ports (60), and defines a flow path fluidly connecting the first (58) and second ports (60). The HM media (54) is maintained within the intermediate section (62) along the flow path. The resistance indicator (56) is carried by the housing (52) and is fluidly connected to the first port (58). In this regard, a visual appearance of the resistance indicator (56) changes as a function of pressure within the housing (52) to visually alert a caregiver as to possible existence of an excessive pressure differential condition within the HME unit (50).

Linvention concerne une unité déchange de chaleur et dhumidité (ECH) (50) comprenant un boîtier (52), un milieu retenant la chaleur et lhumidité (54) (milieu CH) et un indicateur de résistance (56). Le boîtier (52) forme un premier orifice (58), un second orifice (60) et une section intermédiaire (62). La section intermédiaire (62) sétend entre le premier orifice (58) et le second orifice (60) et définit un trajet découlement reliant de manière fluide le premier orifice (58) et le second orifice (60). Le milieu CH (54) est maintenu dans la section intermédiaire (62) le long du trajet découlement. Lindicateur de résistance (56) est porté par le boîtier (52) et est relié de manière fluide au premier orifice (58). A cet égard, lapparence visuelle de lindicateur de résistance (56) change en fonction de la pression dans le boîtier (52) pour alerter visuellement un personnel soignant quant à la possible existence dun état de différence de pression excessive dans lunité ECH (50).

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