Injection devices
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United States of America Patent
Stats
-
Mar 21, 1989
Grant Date -
N/A
app pub date -
Nov 16, 1987
filing date -
Nov 19, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An accessory for an injection device of the kind in which liquid is drawn or expelled along a hollow needle comprises a protective sleeve for surrounding the needle. The sleeve has at least an end portion which is reciprocable in the direction of the length of the needle between an extended position in which the point of the needle is located within the sleeve to shield the point of the needle and a contracted position in which the point of thr needle projects from the sleeve, to enable an injection to be effected. A retaining arrangement is provided for retaining the sleeve in the extended position after the injection has been effected and for preventing the point of the needle from being exposed solely by application of pressure to the end portion of the sleeve in the direction of contracting movement.
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