Injection device with bellowed reservoir
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United States of America Patent
Stats
-
Nov 13, 2001
Grant Date -
N/A
app pub date -
Sep 29, 1999
filing date -
Sep 29, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Devices for injection of medicines into a human body are designed for one-time use during inpatient or outpatient treatment. The reuse of an injection device having a bellows 3 as an injection container is prevented by providing a locking attachment which prevents backward motion of a bottom 4 of the bellows 3 and which is mounted on elements of the device brought together during the injection (the bottom 4 of the bellows 3 and the housing/needle holder 1). A locking attachment is made in a form of a pair of interacting elastically deformable hooks 6 with a beveled catch and a female part in the form of a hole 7 with a ledge 8. At the instant the injection is completed, the sharpened end 10 of the needle 2 punctures a partition 9 in the bottom 4 of the bellows 3, further preventing reuse.
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