PATENT CLAIM ANALYSIS

Application Number: 16148594
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-01
Patent Classification: ["606", "278000"]

Abstract:
A polyaxial bone screw assembly includes a threaded shank body having an upper portion, a receiver, a compression insert and an articulation structure made from at least two discrete pieces. The shank upper portion cooperates with the compression insert to place the retainer in frictional engagement with the receiver. The geometry of the retainer structure pieces corresponds and cooperates with the external geometry of the shank upper portion to frictionally envelope the retainer structure between the capture structure and an internal surface defining a cavity of the receiver.

Claim (Index 1):
A pivotal bone anchor assembly for securing an elongate rod to a bone, the pivotal bone anchor assembly comprising:\n a receiver comprising a base defining a cavity and a pair of arms extending upwardly from the base to define an open channel for receiving the elongate rod, the cavity communicating with the open channel and with a bottom surface of the receiver through a bottom opening; a bone anchor having a lower attachment portion for attachment to the bone and an integral upper capture portion up-loadable into the receiver cavity through the receiver bottom opening; a two-part retainer comprising two separable retainer parts, each retainer part being positioned within the receiver cavity prior to the bone anchor and engageable with the bone anchor upper capture portion so as to hold the upper capture portion within the receiver and in spaced relation from a retainer-engaging surface of the receiver cavity; and an insert disposed within the receiver cavity above the two-part retainer and having an upper surface operable to engage the elongate rod, wherein the two retainer parts at least partially move away from each other upon insertion of the bone anchor upper capture portion into the receiver cavity to capture the upper capture portion within the receiver cavity with the bone anchor lower attachment portion extending distally through the receiver bottom opening, and wherein a force directed downwardly onto the two-part retainer in operable engagement with the bone anchor upper capture portion causes outer surfaces of the retainer parts to become frictionally engaged with the receiver cavity retainer-engaging surface to lock the angular orientation of the bone anchor with respect to the receiver.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 97.0
- Lexical Diversity: 1.82353
- Patent Class: 606.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15617614', '12930768', '15095022', '12080202', '15893333']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8511435665866287
- 35 USC 102 Novelty (BERT): 0.5717495713010712
- Combined Prediction Score: 0.823204167058073
- Mean Citation Score: 438.08117
- Max Citation Score: 462.09534
- Similarity Product: 454.3749464562785

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