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:
May. 06, 1986
Filed:
Mar. 21, 1984
John T Scales, Stanmore, GB;
National Research Development Corp., London, GB;
Abstract
In order to provide for lengthening of a long bone, such as in place of natural growth, an endoprosthetic device (10, 20) is provided in a two-part telescopic form defining a longitudinal passageway (15) in which ball bearings (40) are progressively locatable to control adjustably the device length. At least one end (24) of the device will be adapted for securement in the bone, and the other end (11) can be similarly adapted or define an articulation surface for a joint. The telescoped parts are preferably mutually keyed (22, 23) against rotation, the passageway is preferably of like cross-sectional form as the ball bearings so that the latter form a singular sequence therein, and the ball bearings are suitably located by way of an acutely inclined branch passageway (17).