PATENT CLAIM ANALYSIS

Application Number: 16372240
Application Type: Utility
Filing Date: 2019-04
Publication Date: 2019-07
Patent Classification: ["606", "278000"]

Abstract:
A spinal screw assembly providing an adjustable securement of a fixation rod across at least two vertebrae. The assembly includes a pedicle screw having a spherical head portion, a threaded shaft portion and a tool engagement surface in the head portion for use in driving the screw into a vertebrae. The head portion of the screw is positioned in a body member adjacent a curvilinear surface disposed about an aperture in the end of the body member such that the shaft portion of the screw extends therethrough and the curvilinear inner surface abuts and mates with the head portion of the screw so as to define a ball joint therewith. The body member additionally defines a pair of opposed parallel slots therein adapted to receive a portion of the fixation rod and a locking cap bears against the fixation rod to releasably secure the rod within the assembly.

Claim (Index 21):
A spinal screw assembly for securing a fixation rod to a bone via a closure, the spinal screw assembly comprising:\n a body member having a base defining an axial bore formed around a longitudinal axis with a lower opening in communication with a bottom of the body member, and a pair of arms extending upward from the base to define an open channel for receiving the fixation rod, the open channel being in communication with the axial bore and having opposed proximal closure mating structures, the axial bore including a distal interior surface above and adjacent to the lower opening and opposed inwardly protruding structures formed in the axial bore above the lower opening and the distal interior surface; a screw having a threaded shaft and a head disposed within the body member axial bore with the shaft extending downward through the lower opening, the screw head having a spherical outer surface with a single constant radius extending above and below a hemisphere plane to define an upper and lower hemisphere above and below the hemisphere plane, respectively, the screw head being held in the body member above the lower opening so as to allow variable angular movement of the screw relative to the body member during assembly; and a bushing having receiving structures formed in opposed sides thereof for engaging the inwardly protruding structures formed in the body member axial bore so as to inhibit movement of the bushing along the longitudinal axis in the axial bore, wherein when the bushing is displaced downwardly in the axial bore, the bushing is in frictional contact with an internal surface below the inwardly protruding structures so that the screw head spherical outer surface is held downwardly in a frictional arrangement to inhibit the screw and the body member from moving freely with respect to each other prior to the insertion and securement of the fixation rod with the closure.

Metadata:
- Claim Count in Document: 80.0
- Percentile: 100.0
- Lexical Diversity: 1.93671
- Patent Class: 606.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14163797', '13507857', '12154448', '10848946', '14250685']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8540237344386039
- 35 USC 102 Novelty (BERT): 0.5524774824027153
- Combined Prediction Score: 0.8238691092350151
- Mean Citation Score: 421.1288080000001
- Max Citation Score: 463.47812000000016
- Similarity Product: 423.3204969935656

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