Needle based helical coil safety device
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United States of America Patent
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Dec 27, 2016
Grant Date -
Apr 2, 2015
app pub date -
Oct 9, 2014
filing date -
May 5, 2010
priority date (Note) -
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Abstract
The present disclosure describes anti-needle stick safety mechanism that is passively activated during the normal course of giving an injection. In one embodiment, the device includes a spring member coupled at a proximal end to a needle member and at a distal end to a needle cover. The passive activation of the device is triggered when the needle is inserted to a minimum depth into the patient's tissue to unleash the force of a compressed spring to urge a needle cover towards the distal end of the needle. As the needle is withdrawn from the tissue, the needle cover advances to the end of the needle and as it partially clears the end of the needle, it adopts an orientation that prevents the needle tip from re-emerging from the needle cover.
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