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. 12, 2024
Filed:
Nov. 14, 2022
Roger P. Jackson, Prairie Village, KS (US);
Roger P. Jackson, Prairie Village, KS (US);
James L. Surber, Kansas City, KS (US);
Nathaniel D. Ginzton, Boise, ID (US);
Abstract
A bone anchor assembly includes a shank having a head and an anchor portion, and a receiver having a first channel to receive a rod and an axial bore with an upper internal thread, interference abutment surfaces below the upper internal thread, and a bottom opening. The assembly also includes an insert having a second channel to receive the rod and opposite lateral protrusions positioned above the interference abutment surfaces upon loading into a first position within the axial bore. The assembly further includes a resiliently expandable retainer positionable within the axial bore adjacent the bottom opening to capture and hold the head in the receiver. After the head is uploaded into the axial bore, the insert is downwardly deployable by tooling into a second position with the opposite lateral protrusions being forced below the interference abutment surfaces and with lower portions of the insert entering into compressive overlapping engagement with the retainer to hold down the retainer within the axial bore.