Safety vent structure for extracorporeal circuit

Details Safety vent structure for extracorporeal circuit Safety vent structure for extracorporeal circuit

A - Human Necessities

61

M

A61M 1/36 (2006.01)

Patent

CA 2698408

A vent assembly (150, 270) is described for use in an extracorporeal fluid unit (100). A vent structure (146, 264) adjacent to a micro-porous membrane (144, 260) forms the assembly. The vent structure is porous, but expands when the vent structure becomes wet, thereby closing off the pores and inhibiting (e.g., preventing) fluid from flowing through the vent structure. The vent structure also protects the membrane from becoming wet, such as from condensation.

L'invention concerne un ensemble d'aération (150, 270) destiné à être utilisé dans une unité pour fluide extracorporel (100). Une structure d'aération (146, 264) adjacente à une membrane microporeuse (144, 260) forme l'ensemble. La structure d'aération est poreuse, mais se dilate lorsque la structure d'aération devient humide, permettant ainsi de fermer les pores et d'interdire (par exemple, d'empêcher) l'écoulement du fluide à travers la structure d'aération. La structure d'aération protège également la membrane de l'humidité qui est due, par exemple, à la condensation.

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