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:
Nov. 25, 2025
Filed:
Sep. 05, 2024
Roger P. Jackson, Prairie Village, KS (US);
Roger P. Jackson, Prairie Village, KS (US);
James L. Surber, Kansas City, KS (US);
Abstract
A pivotal bone anchor assembly includes a bone anchor having a proximal capture portion and an anchor portion, and a receiver having a channel for receiving a rod, an internal cavity with upper expansion and lower locking regions, and a central bore with an inwardly-protruding circumferentially-extending interference engagement structure. The assembly also includes a pressure insert having an upper surface for engaging the rod and an exterior surface for engaging the interference engagement structure to restrict movement of the pressure insert within the central bore. After the proximal capture portion of the bone anchor is positioned within internal cavity, the pressure insert is downwardly movable within the central bore to force the exterior surface at least partially past the interference engagement structure to inhibit the pressure insert from moving back up within the central bore.