PATENT CLAIM ANALYSIS

Application Number: 15878542
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-06
Patent Classification: ["606", "246000"]

Abstract:
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. A down-loadable compression insert with tool receiving arm extensions, 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.

Claim (Index 22):
A pivotal bone anchor assembly for securing an elongate rod to a bone, the bone anchor assembly comprising:\n a receiver having a longitudinal axis, a base, and a pair of upstanding arms extending upwardly from the base with opposed inner surfaces defining an open channel for receiving the elongate rod, the arm inner surfaces having a closure top mating feature formed thereon, the base including a cavity in communication with the open channel and with a bottom surface of the base through a bottom opening to define a receiver bore centered about the longitudinal axis, the cavity having an upper capture region and a lower locking region, the receiver including an inwardly sloping and protruding rigid structure machined into interior surfaces of the bore between the closure top mating feature and the bottom opening; a bone anchor having an upper portion with an at least partial spherical outer surface having a hemisphere and an integral lower portion extending distally from the upper portion for fixation to the bone, the upper portion being uploadable into the receiver cavity with the lower portion extending downwardly through the bottom opening; an insert having an upwardly facing surface configured to engage the elongate rod when the elongate rod is received within the receiver open channel and a top surface above the upwardly facing surface, the insert being disposed in a first position within the receiver bore prior to the uploading of the bone anchor upper portion, the insert including a side exterior portion having a recessed outwardly-facing surface below the top surface being engageable with the receiver inwardly sloping and protruding rigid structure; and a retainer having a pair of segments, each segment having an upper portion including a top surface and a horizontally extending circumferential outwardly-facing recessed surface forming an arcuate groove spaced below the top surface, the retainer including at least one slot configured so that the retainer can expand to accept and at least partially surround the at least partial spherical outer surface of the bone anchor upper portion above and below the hemisphere so as to engagingly and frictionally capture the bone anchor upper portion therein, the retainer being initially positioned and held in the receiver cavity upper capture region prior to the uploading of the bone anchor upper portion through the receiver bottom opening with the retainer segment upper portions being in an overlapped relationship with a downwardly-facing sloped surface above a lower edge of the insert, wherein after the bone anchor upper portion has been uploaded through the receiver bottom opening and captured within the retainer, the insert is downwardly deployable into a second position with a deployment tool to force the insert down in the receiver bore so that the insert has a wedging interference engagement with the receiver inwardly sloping and protruding rigid structure to inhibit the insert from being pushed back up within the receiver bore, and wherein the retainer segment upper portions and the insert downwardly-facing sloped surface have an overlapping compressive engagement with respect to each other when the retainer is in the lower locking region of the receiver cavity.

Metadata:
- Claim Count in Document: 92.0
- Percentile: 86.0
- Lexical Diversity: 1.6
- Patent Class: 606.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14872621', '13373289', '15638039', '13374439', '14674517']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8967555146466082
- 35 USC 102 Novelty (BERT): 0.5673999062791106
- Combined Prediction Score: 0.8638199538098584
- Mean Citation Score: 498.409288
- Max Citation Score: 516.714
- Similarity Product: 481.7311539759637

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test