Safety syringe

Details Safety syringe Safety syringe

1996-10-08

1998-02-24

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604192, 604198, A61M 500

Patent

active

057207275

ABSTRACT:
A safety syringe is disclosed and claimed. The safety syringe has a hollow barrel and a plunger. The plunger enters the barrel from one end and a needle leaves the barrel from the other end. A thin blunt sheath is positioned over the needle. The sheath has an exposed position in which the point of the needle is exposed and a covered position in which the point of the needle is covered. A connector functionally joins the sheath to the plunger so that the sheath is advanced from the exposed position to the covered position as the plunger is advanced. In operation, the safety syringe is filled like a conventional syringe by placing the needle in a vial of medication and drawing back on the plunger. Once the safety syringe is filled, the needle is inserted into the patient. The needle should be inserted a sufficient distance to insert the end of the sheath into the patient as well. The medication is then injected into the patient by depressing the plunger. Depressing the plunger will, as stated, advance the sheath from the exposed position to the covered position. Thus, the needle may be covered before it is removed from the patient.

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