Safety syringe

Details Safety syringe Safety syringe

1990-07-30

1991-10-15

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604198, 604263, A61M 532

Patent

active

050570862

ABSTRACT:
A tubular hypodermic needle syringe has a tubular sheath that slides over the exterior of the syringe to cover the needle. The sheath is locked over the needle by a latch that engages the syringe and the sheath. The latch is held in its locking engagement by a sliding collar that normally engages the latch to lock the latch but which is manually slidable to disengage the latch so that the sheath can be manually moved to expose the needle. A spring urges the collar to a latch engaging position to automatically lock the sheath over the needle.

REFERENCES:
patent: 4820275 (1989-04-01), Haber et al.
patent: 4932940 (1990-06-01), Walker et al.
patent: 4932947 (1990-06-01), Cardwell
patent: 4985021 (1991-01-01), Straw et al.

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