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:
Dec. 12, 2000
Filed:
Apr. 11, 1997
David Mendes, Haifa 34483, IL;
Ruth Beer, Haifa 34483, IL;
Other;
Abstract
A surgical method and device are provided which enable to prepare a natural patella for accepting a patella implant, while preserving a predetermined thickness of the natural patella. The device comprises: (a) a bone shaping element such as a reamer or a miller, including: (i) a rotatable bone shaping member having a lower edge; (ii) a shaft member having a scale including at least one marker; and (b) a guiding device for guiding the bone shaping element, including: (i) a patella holder for holding the natural patella; (ii) a pointer positioned at a constant distant from the patella holder for pointing at the marker, such that the distance between the pointer and the patella holder equals the sum of: the distance between the marker and the lower edge of the bone shaping member; and the preserved thickness of the natural patella. The method comprises: (a) holding the natural patella by means of a patella holder; (b) shaping the natural patella by means of a bone shaping element, the bone shaping element having: a marker; and a lower edge; (c) monitoring the shaping by means of a pointer, the distance between the pointer and the patella holder being equal to the sum of: (i) the distance between the marker and the lower edge; and (ii) the preserved thickness of the natural patella, such that when the marker merges with the pointer, a conclusion is made that the preserved thickness of the natural patella equals the predetermined value.