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:
Apr. 24, 1990
Filed:
Feb. 03, 1988
James L Dale, Austin, TX (US);
Brain D Burkinshaw, Pflugerville, TX (US);
Wayne Z Burkhead, Dallas, TX (US);
Intermedics Orthopedics, Inc., Austin, TX (US);
Abstract
A modular humeral prosthetic device comprising a humeral stem having a substantially cylindrical distal end for insertion within the medullary canal of a resected human humerus; the stem transforming proximally from the distal end into a widened proximal end being tapered from anterior to posterior aspect; the proximal end having a proximal end surface which is angled relative to the axis of the distal end; a collar extending from the proximal end surface for preventing the stem from subsiding within the medullary canal; a tapered cylindrical mounting lock mechanism disposed on the proximal end surface, the axis of the tapered cylinder being substantially coincident with the central axis of the proximal end surface; a head mechanism having a substantially spherically shaped outer surface for engagement within the glenoid cavity of a human scapula, the outer spherical surface of the head mechanism being less than half the surface of a complete sphere; the head mechanism including a complementary tapered aperture for reversibly receiving the cylindrical lock mechanism in a rigid mechanical coupling engagement; the theoretical center of the spherically shaped head mechanism being disposed at or below the collar.