Button activated automatic needle sheath for disposable syringe

Details Button activated automatic needle sheath for disposable syringe Button activated automatic needle sheath for disposable syringe

Filed on

1988-01-29

Date issued

1989-07-25

Examiner

Yasko, John D.

Patent Class

Surgery

SubClass

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

SubSubClass

Treating material introduced into or removed from body...

Other Related Categories

604263, A61M 532

Type

Patent

Status

active

Patent number

048509779

Description

ABSTRACT:
A needle sheath for completely encasing the needle of a disposable syringe is provided as a slidable attachment to the end of the syringe. The sheath is spring loaded. A push-button locking mechanism keeps the sheath in its unactivated position, leaving the hypodermic needle exposed, as needed for use. After use of the syringe, activating the button-locking mechanism causes the sheath to be driven by the spring mechanism to cover the length of the needle. The end flaps of the sheath that were held apart by the hypodermic needle close inward and overlap, completely encasing the needle.

REFERENCES:
patent: 2876770 (1959-03-01), White
patent: 3073306 (1963-01-01), Linder
patent: 3354881 (1967-11-01), Bloch
patent: 4139009 (1979-02-01), Alvarez
patent: 4573976 (1986-03-01), Sampson et al.
patent: 4581025 (1986-04-01), Timmermans
patent: 4610667 (1986-09-01), Pedicano et al.
patent: 4631057 (1986-12-01), Mitchell
patent: 4654034 (1987-03-01), Masters et al.
patent: 4659330 (1987-04-01), Nelson et al.
patent: 4664654 (1987-05-01), Strauss
patent: 4702738 (1987-10-01), Spencer
patent: 4702739 (1987-10-01), Milorad

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