Blood sampling apparatus
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United States of America Patent
Stats
-
Dec 20, 1994
Grant Date -
N/A
app pub date -
Jun 22, 1993
filing date -
Jun 22, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A blood sampling apparatus includes a housing (1) closed off by a rotatable cover (4), which in turn seals off the housing completely with a seal (7). The cover has a threaded sleeve (9), which cooperates with a piston rod for axial displacement of a piston (2). The housing cover has an opening closed off by a sterile filter (11). When the piston (2) is displaced, this piston rod always remains completely inside the housing (1), so that no bacteria, other kinds of germs or any other kind of contamination can penetrate the housing from the outside (FIG. 1).
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