Syringe tip cap with self-sealing filter
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United States of America Patent
Stats
-
Jun 30, 1992
Grant Date -
N/A
app pub date -
Jun 19, 1990
filing date -
Jun 19, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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