Syringe tip cap with self-sealing filter

Details Syringe tip cap with self-sealing filter Syringe tip cap with self-sealing filter

A - Human Necessities

61

M

128/80

A61M 5/31 (2006.01) A61B 5/15 (2006.01)

Patent

CA 2030734

A syringe tip cap and a method for purging air from a syringe-like container containing air and hazardous liquid. The cap contains a hydrophilic filter which, when dry, allows air to pass through the filter. When the air is purged from the syringe, liquid from the container is pushed or drawn to the filter. The filter expands when wetted, seals the cap, and prevents further fluid flow. A flow restrictor may be included within the cap to concentrate the flow to only a portion of the filter to prevent premature sealing of the filter.

Capuchon d'embout de seringue et méthode permettant de purger l'air d'un contenant de type seringue renfermant de l'air et un liquide dangereux. Le capuchon contient un filtre hydrophile qui, une fois sec, permet le passage de l'air à travers le filtre. Quand l'air est purgé de la seringue, le liquide du contenant est poussé ou tiré à travers le filtre. Le filtre prend de l'expansion lorsqu'il est mouillé, scelle le capuchon et empêche tout autre écoulement de liquide. Un réducteur de débit peut être inclus dans le capuchon afin de concentrer le débit à une seule portion du filtre afin de prévenir le scellement prématuré du filtre.

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