Protective housing for a butterfly needle

Details Protective housing for a butterfly needle Protective housing for a butterfly needle

2007-12-04

2007-12-04

Williams, Catherine S. (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S263000, C604S177000, C604S198000

Reexamination Certificate

active

10496176

ABSTRACT:
A butterfly-needle set has an elongated two-part case forming a pair of transversely open slots. An elongated needle in the case has a pair of generally coplanar and oppositely projecting wings projecting out of the case through the slots. The slots are sufficiently long that the needle can move longitudinally between a front position with the needle projecting from a front end of the case and a rear position with the needle completely within the case. An elastically deflectable spring element projects at a small acute angle toward a rear end of the case into at least one of the slots so as to deflect elastically and allow the needle to move from the front position into the rear position and to block movement of the needle from the rear position into the front position.

REFERENCES:
patent: 5433703 (1995-07-01), Utterberg et al.
patent: 5772638 (1998-06-01), Utterberg et al.
patent: 5779679 (1998-07-01), Shaw
patent: 0 436 646 (1994-08-01), None

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