Self closing hinged syringe guard
OwnerGary M. Paudlerinventor
Life of this patent
Estimating the term…
Abstract
A syringe is molded with an integral needle cover or guard that pivots about a main living hinge on the side of the syringe near the base of the needle. A tension spring formed from an L shaped integrally molded part of the syringe and guard extends from a location closer to the syringe than the main living hinge to the center part of the pivoting guard. The user, while holding the syringe with one hand, can extend a finger to initiate rotation of the guard toward the needle. This extends the tension spring at first, but beyond a certain angle, the tension spring contracts again, pulling the guard the rest of the way into a position surrounding the needle.
Claims15
A syringe with a self closing guard comprising:
- a syringe having an elongate axis and adapted to support a needle at one end;
- a guard with a slot therein shaped to accept said needle within, said guard pivoted on said syringe at a location near said one end and about a main hinge, the axis of said main hinge being orthogonal to said elongate axis and displaced away from said elongate axis by a short distance;
- and
- a tension spring member extending from a first spring hinge to a second spring hinge, said first spring hinge mounted to the syringe on the same side of the syringe as said main hinge and at a distance closer to said elongate axis than said main hinge and at a location along the syringe on the opposite side of the main hinge from said needle, said second spring hinge mounted to the guard at a place proximate to said main hinge so as to pull said guard into position with the needle inside said slot when the guard is rotated about said main hinge part of the way toward said needle.
Dependencies are inferred from the claim text.