Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1993-04-02
1997-01-07
Green, Randall L.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604284, 604905, A61M 2500
Patent
active
055911439
ABSTRACT:
A luer connector is provided with a tactile and audible torque indicator. The indicator comprises a detent incorporated between the female cylindrical component of the luer connector and a rotatable collar mounted thereon. As the collar is turned in a clockwise direction, the collar is impeded by the detent formed by opposingly projecting protuberances between the inside of the collar and the outside of the female cylindrical luer component. As the threaded luer connection is tightened, requiring additional torque to tighten it further, the additional torque overcomes the resistance of the detent, allowing the collar protuberance to slip past the cylinder protuberance. The female luer component may also be provided with a color patch or pattern, to indicate by its rotation, when the detent has been overcome, that the luer connection has been appropriately tightened. In an alternative embodiment, oppositely disposed grooved wings are provided on the rotatable threaded collar of the male luer component to provide indication of proper torque by deflection and failure of the wings just prior to overtightening. The wings may be provided with gussets to strengthen the wings for rotation in the loosening direction.
REFERENCES:
patent: 2564804 (1951-08-01), Everett
patent: 4198973 (1980-04-01), Millet
patent: 4294250 (1981-10-01), Dennehey
patent: 4439188 (1984-03-01), Dennehey et al.
patent: 5066286 (1991-11-01), Ryan
patent: 5209740 (1993-05-01), Bryant et al.
patent: 5330450 (1994-07-01), Lopez
Dedola Salvatore J.
Trombley, III Frederick W.
Alexander V.
Green Randall L.
Medrad Inc.
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