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:
Jun. 11, 2013
Filed:
Aug. 22, 2012
Andre Frenk, Brittnau, CH;
Florian Beutter, Solothurn, CH;
Franco Cicoira, Selzach, CH;
Synthes USA, LLC, West Chester, PA (US);
Abstract
A device for manipulating bone fragments includes a bone screw includes a shaft extending along a longitudinal axis. The shaft includes a first end having a first threaded portion with a first core diameter, a first external diameter and a first pitch. The shaft includes a second end having a second threaded portion with a second core diameter, a second external diameter and a second pitch. The second end further has a tool engaging surface, wherein the first external diameter is no greater than the second core diameter, the first and second pitches are substantially equal, and a non-threaded middle segment between the first and second threaded portions, an outer diameter of the middle segment being smaller than the first core diameter, and wherein the shaft includes a cannulation extending therethrough disposed coaxial with the screw longitudinal axis. An installation instrument includes first and second ends, a longitudinal axis, and a bore extending along at least a portion of the longitudinal axis, the bore in communication with the first end of the instrument, wherein the bore has threads along at least a portion of a length thereof, the threads configured to mate with the second threaded portion of the bone screw so that rotating the installation instrument rotates the bone screw to drive the screw into a bone.