Automatic cannula withdrawing device for injection syringes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 18, 2000
Grant Date -
N/A
app pub date -
Dec 12, 1997
filing date -
Jul 6, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic needle retraction device includes a housing and retraction device for completely retracting a needle back into the housing after use. A selector switch device includes an equalization part, which produces a negative pressure to accept the fluid compressed during the retraction of the hollow needle. Thus, during retraction of the needle, compressed injection solution is not sprayed outward from the needle.
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