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:
Mar. 20, 2018
Filed:
Dec. 11, 2015
Depuy Synthes Products, Inc., Raynham, MA (US);
Frank Spratt, Boston, MA (US);
Philip A. Cormier, Canton, MA (US);
Ernest Quintanilha, Norton, MA (US);
Sara Dziedzic, North Attleboro, MA (US);
Nicholas Pavento, North Attleboro, MA (US);
Derek Shaw, North Attleboro, MA (US);
Thibault Chandanson, Villers le lac, FR;
DePuy Synthes Products, Inc., Raynham, MA (US);
Abstract
Various exemplary methods and devices are provided for fixing bone anchors to bone. In general, the methods and devices can allow for a bone anchor to be fixed to a bone at a desired angle to a receiver member. In an exemplary embodiment, a bone anchor assembly is provided that includes a bone anchor configured to engage bone, a receiver member that polyaxially seats a spherical head of the bone anchor, and a compression member seated within the receiver member, proximally of the head of the bone anchor. The compression member can have a distal end with gripping features thereon configured to create at least one line contact and/or one band contact with the head of the bone anchor, thus providing a firm grip on the head of the bone anchor and reducing a risk of slippage of the bone anchor with respect to the receiver member.