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:
Feb. 24, 1976
Filed:
Oct. 02, 1974
Robin Sydney Ling, Teignmouth, EN;
Alan John Lee, Exeter, EN;
National Research Development Corporation, London, EN;
Abstract
An endoprosthetic bone joint device developed for the elbow, but applicable elsewhere, has two hinge components respectively defining complementary first and second bearing surfaces for mutual articulatory engagement, and each apertured to define third bearing surfaces. When implanted the hinge components are first coupled by a further component passed through the apertures and defining fourth bearing surfaces to articulate with the third surfaces. At this stage all of the bearing surfaces are appropriately engaged and stabilization of the implantation securement is facilitated. Subsequently the coupling can be removed to reduce the effect of distraction stresses on the device. The first and second surfaces are suitably of spherical ball and socket form, and can be of a twinned form, while the third and fourth surfaces are suitably of circular cylindrical form extending diametrally through the ball and socket.