Needle bearing medical device with three-position shield

Details Needle bearing medical device with three-position shield Needle bearing medical device with three-position shield

1987-07-27

1988-06-21

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604263, A61M 532

Patent

active

047522909

ABSTRACT:
Needle-containing medical appliances (e.g., hypodermic syringes, i.v. catheter placement units and phlebotomy apparatus) having tubular shields which are adapted to protect users from injury from contact with the needle are disclosed and claimed. A series of raked teeth on the tubular shield cooperate with raised surfaces on the body of the medical appliance to provide three distinct shield-retaining positions, one of which is adapted to lock the shield around the needle in a substantially non-releasable position.

REFERENCES:
patent: 2408323 (1946-09-01), Lockhart
patent: 2925083 (1960-02-01), Craig
patent: 3780734 (1973-12-01), Wulff
patent: 3890971 (1975-06-01), Leeson et al.
patent: 4139009 (1979-02-01), Alvarez
patent: 4425120 (1984-01-01), Sampson et al.
patent: 4507117 (1985-03-01), Vining et al.
patent: 4573976 (1986-03-01), Sampson et al.
patent: 4592744 (1986-06-01), Jagger et al.
patent: 4631057 (1986-12-01), Mitchell

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