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:
Nov. 28, 1989
Filed:
Sep. 20, 1988
Hans Haindl, Melsungen, DE;
B. Braun Melsungen AG, Melsungen, DE;
Abstract
A safety cap having radial projections which comprise a slide flank inclined in the peripheral direction relative to the longitudinal axis of the sleeve of the safety cap. The slide flanks are engaged by the longitudinal wings of the cannula hub, which wings fit tightly to the inner wall surface between the radial projections. Subject to the orientation of the peripherally inclined slide flank of each radial projection, the rotation of the safety cap loosely put together with the cannula hub causes a clamping lock in one direction or the other of the safety cap and the cannula hub by a mutual blocking of the radial projections and the longtiudinal wings, on the one hand, or an axial displacement of the safety cap from the cannula hub on the other hand. By a keying effect of the longitudinal wing of the cannula hub sliding over the oblique slide flank, the adhesion between the longitudinal wings and the inner wall surface is cancelled without a tractive effect endangering the connection of syringe cone and cannula hub, and the cannula is ready for use.