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:
Aug. 09, 2005
Filed:
May. 12, 2000
John J. O'connor, Oxford OX3 8JN, GB;
Alberto Leardini, Bologna, IT;
Sandro Giannini, Viareggio, IT;
Fabio Catani, Bologna, IT;
John J. O'Connor, Oxford OX3 8JN, GB;
Alberto Leardini, Bologna, IT;
Sandro Giannini, Viareggio, IT;
Fabio Catani, Bologna, IT;
Other;
Abstract
A prosthesis device () for correct replacing of the articular surfaces of the human ankle joint comprises: a first component () having a spherical convex articular bearing surface (); a second component () having a bearing surface () which has a convex shape in the frontal plane, and concave sulcus in the frontal plane; and a third component () located between said first and second components () and having two surfaces () which are complementary to and engage the upper convex and the lower concave sulcus surfaces () to be fully congruent with the components (). The three components () can be designed from the subject-specific geometry of the ligaments (). The device () can move under natural muscular and ligamentous control, closely restoring that of a natural joint and maintaining uniform load distribution. A prosthesis device () implanted according to a stated method of ensuring equal dorsi- and plantar-flexion gaps between first () and second () components, is a part of the invention.