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:
Feb. 02, 2016
Filed:
Dec. 12, 2011
Francis Denis, Minneapolis, MN (US);
Timothy A. Garvey, Edna, MN (US);
Joseph H. Perra, Shoreview, MN (US);
Manuel Pinto, Minnetonka, MN (US);
James D. Schwender, Edna, MN (US);
Ensor Transfeldt, Edna, MN (US);
Michael S. Veldman, Memphis, TN (US);
William A. Rezach, Atoka, TN (US);
Francis Denis, Minneapolis, MN (US);
Timothy A. Garvey, Edna, MN (US);
Joseph H. Perra, Shoreview, MN (US);
Manuel Pinto, Minnetonka, MN (US);
James D. Schwender, Edna, MN (US);
Ensor Transfeldt, Edna, MN (US);
Michael S. Veldman, Memphis, TN (US);
William A. Rezach, Atoka, TN (US);
Warsaw Orthopedic, Inc, Warsaw, IN (US);
Abstract
A bone screw comprises a threaded shank including a distal end portion and a proximal end portion, and defining a first threaded section extending from the distal end portion toward the proximal end portion and adapted for anchoring in cancellous bone. A second threaded section extends contiguously from the first threaded section toward the proximal end portion The second threaded section has a finer thread pattern relative to the first threaded section. In one embodiment, the first threaded section includes a first helical threading defining a single lead thread pattern for anchoring in cancellous bone, and the second threaded section includes a second helical threading interleaved with the first threading to define a duel lead thread pattern for engagement in cortical bone. In a further embodiment, the bone screw includes a head portion extending from the threaded shank and configured for coupling to a spinal implant.