PATENT CLAIM ANALYSIS

Application Number: 16057563
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2018-12
Patent Classification: ["606", "257000"]

Abstract:
A polyaxial bone screw assembly includes a threaded shank body having an upper portion with a capture structure thereon, a retaining and articulating structure, a compression structure and a receiver for holding the capture structure, retaining and articulating structure, compression structure and a rod. The receiver includes arms that define a channel for receiving the rod. The arms have inner surfaces with a discontinuous flange form thereon for mating with a cooperating continuous flange form of a closure structure for capturing the rod within the receiver. The shank capture structure and the retaining and articulating structure are threadably attached and secured to one another with a buttress stop. In operation, the compression structure is disposed within the receiver between the shank upper portion and a rod but presses only upon the retaining and articulating structure. The retaining and articulating structure has an external substantially spherical surface that mates with an internal surface of the receiver, providing a ball joint, enabling the receiver to be disposed at numerous angles relative to the shank body. The shank upper portion includes a tool engagement formation for driving the shank body into bone.

Claim (Index 1):
A pivotal bone anchor assembly for a securing an elongate rod to a bone via a closure, the pivotal bone anchor assembly comprising:\n a receiver having a longitudinal axis, a bore centered around the longitudinal axis, and a pair of integral upright arms with opposed interior surfaces defining a receiver channel for receiving the elongate rod therebetween and including a discontinuous mating structure for mating with the closure, the bore being in communication with the channel and with a bottom surface of the receiver through a bottom opening and including a spherical seating surface adjacent the bottom opening; a shank having a longitudinal axis, a lower anchor portion for attachment to the bone, and an integral upper capture portion configured for positioning within the receiver bore through the bottom opening, the upper capture portion including an internal socket formed therein for engaging a driving tool; a retainer disposed within the receiver bore and engageable with the shank upper capture portion to capture and hold the shank upper capture portion within the receiver bore with the lower anchor portion extending downward through the receiver bottom opening, the retainer having an outer spherical surface engageable with the receiver bore spherical seating surface to provide for pivotal movement between the receiver and the shank prior to a locking of the bone anchor assembly; and an insert disposed within the receiver bore and having an upper surface engageable with the elongate rod, a lower surface engageable with the retainer outer spherical surface, and a central aperture for receiving the driving tool, wherein the insert remains spaced apart from the shank upper capture portion in all degrees of pivotal movement of the shank with respect to the receiver.

Metadata:
- Claim Count in Document: 71.0
- Percentile: 96.0
- Lexical Diversity: 2.33333
- Patent Class: 606.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15703567', '15702442', '12924260', '15094870', '11178854']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8481318057358623
- 35 USC 102 Novelty (BERT): 0.5674224644473185
- Combined Prediction Score: 0.8200608716070079
- Mean Citation Score: 493.334258
- Max Citation Score: 502.1926
- Similarity Product: 470.8400453292847

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