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1. (AU2011326817) Polyaxial bone anchors with pop-on shank, friction fit fully restrained retainer, insert and tool receiving features

Office : Australia
Application Number: 2011326817 Application Date: 09.11.2011
Publication Number: 2011326817 Publication Date: 04.07.2013
Publication Kind : B8
Prior PCT appl.: Application Number:US2011001873 ; Publication Number: Click to see the data
IPC:
A61B 17/86
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
17
Surgical instruments, devices or methods, e.g. tourniquets
56
Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58
for osteosynthesis, e.g. bone plates, screws or the like
68
Internal fixation devices
84
Fasteners therefor
86
Pins or screws
CPC:
A61B 17/7008
A61B 17/7032
A61B 17/7037
A61B 17/7076
A61B 17/68
Applicants: Jackson, Roger P.
Inventors:
Agents: Phillips Ormonde Fitzpatrick
Priority Data: 61/456,649 10.11.2010 US
61/460,234 29.12.2010 US
Title: (EN) Polyaxial bone anchors with pop-on shank, friction fit fully restrained retainer, insert and tool receiving features
Abstract: front page image
(EN) A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. The receiver can have crimp tabs, but is devoid of spring tabs and collet¬ like flexible structures. A down-loadable compression insert (some with lock and release feature), a down¬ loadable friction fit split retaining ring and an up- loadable shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled. The receiver and insert include aligned tool receiving apertures for lock and release of the polyaxial mechanism.
Also published as:
EP2637585CA2825285JP2014500068WO/2012/064360