The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 1997
Filed:
Apr. 02, 1993
Frederick W Trombley, III, Gibsonia, PA (US);
Salvatore J Dedola, McKees Rocks, PA (US);
Medrad Inc., Pittsburgh, PA (US);
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.