PATENT CLAIM ANALYSIS

Application Number: 16118079
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-05
Patent Classification: ["606", "266000"]

Abstract:
A polyaxial bone anchor with a receiver, a shank, a pressure insert, a retainer for holding the shank in the receiver, and a closure. The receiver having at least one vertically aligned guide on a surface of an interior shank and insert receiving chamber. The insert having at least one shoulder that aligns with the guide and both properly positions the insert relative to the receiver during assembly and prevents the insert from axially rotating relative to 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 shank having an upper capture portion and an anchor portion extending distally from the upper capture portion for fixation to the bone; a receiver having a top, a bottom, and a longitudinal axis extending from the top to the bottom, a base defining a chamber communicating with the bottom of the receiver through a bottom opening, and a first pair of upstanding arms extending upwardly from the base to define a first channel opening onto the top of the receiver and configured to receive the elongate rod, the first channel communicating with the chamber, the chamber having a circumferential expansion and locking portion defined in part by an upwardly-facing seating surface extending perpendicular to the longitudinal axis; an insert having a second pair of upstanding arms defining a second channel opening onto a top of the insert and configured to receive the elongate rod, the insert being uploaded into the receiver chamber through the bottom opening, the insert having an outer surface that is slidably engageable with a longitudinal alignment structure formed in the receiver to prevent rotation between the insert and the receiver and to maintain the second channel in alignment with the first channel; and an open retainer ring having a top surface, a bottom surface, an internal surface, and an external surface, and having a gap extending entirely through the ring from the top surface to the bottom surface and from the internal surface to the external surface, the retainer ring being uploaded into the receiver chamber through the bottom opening after the insert and positionable within the circumferential expansion and locking portion of the receiver chamber, wherein the shank upper capture portion is uploadable into the receiver chamber through the bottom opening after the insert and the retainer ring, in which the upward loading motion of the shank upper capture portion along the longitudinal axis urges the retainer ring into expansion within the circumferential expansion and locking portion, after which the retainer ring resiliently returns to a non-expanded state so as to capture the shank upper capture portion within the receiver chamber, and wherein the insert is configured to engage the shank upper capture portion, with the retainer ring being seated against the upwardly-facing seating surface, so as to lock the shank with respect to the receiver.

Metadata:
- Claim Count in Document: 22.0
- Percentile: 96.0
- Lexical Diversity: 1.79167
- Patent Class: 606.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14730981', '13317969', '15893333', '15239515', '16040258']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8620460480718208
- 35 USC 102 Novelty (BERT): 0.5448277339486356
- Combined Prediction Score: 0.8303242166595023
- Mean Citation Score: 387.344796
- Max Citation Score: 451.79233
- Similarity Product: 437.49862012524966

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test