PATENT CLAIM ANALYSIS

Application Number: 15940343
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-08
Patent Classification: ["606", "267000"]

Abstract:
A medical implant assembly includes a polyaxial bone anchor having a shank, a receiver, a lower compression insert with planar surfaces for closely receiving an elongate connecting member with planar surfaces and a one-piece closure structure. The connecting member is made from a polymer. The closure structure engages both the connecting member and the insert with the engagement between the closure structure and the insert securely locking the polyaxial mechanism even if the connecting member exhibits creep.

Claim (Index 1):
A pivotal bone anchor assembly for securing an elongate rod to a bone via a closure top, the pivotal 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 upwardly-opening rod-receiving channel configured to receive the elongate rod, the arm inner surfaces having a closure top mating feature formed thereon, the base including a cavity in communication with the 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 a spherical seating surface proximate the bottom opening, the bore including:\n a recess with a downwardly-facing surface below the closure top mating feature; and \n at least one integral structure protruding inwardly toward the longitudinal axis between the closure top mating feature and the cavity; \n a shank having a proximal capture portion with a spherical outer surface and an anchor portion extending distally from the capture portion for fixation to the bone, the shank capture portion being positionable within the receiver cavity with the shank anchor portion extending downwardly through the bottom opening; and a pressure insert having an upwardly-facing curvate seating surface configured to receive at least an underside portion of the elongate rod, a central opening for a tool to pass through, at least one notch formed in an outer side surface thereof, a lower surface configured to engage the shank capture portion spherical outer surface to directly apply downward pressure to the shank capture portion, and an upwardly-facing surface positioned radially outward from the curvate seating surface, the pressure insert being installed into a first position within the receiver bore with the curvate seating surface in a non-alignment orientation with respect to the receiver rod-receiving channel, wherein upon rotation of the pressure insert about the longitudinal axis into a second position within the receiver, with the insert curvate seating surface in a co-linear alignment with the receiver rod-receiving channel,\n the at least one receiver inwardly-protruding integral structure is positioned in the at least one insert outer side surface notch so as to prevent further rotation of the pressure insert within the receiver bore, and \n the insert upwardly-facing surface is rotated under the receiver recess downwardly-facing surface so as to inhibit upward movement of the pressure insert within the receiver bore along the longitudinal axis.

Metadata:
- Claim Count in Document: 59.0
- Percentile: 90.0
- Lexical Diversity: 1.70833
- Patent Class: 606.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13068505', '13507802', '12229207', '12290244', '14872621']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9064270497457484
- 35 USC 102 Novelty (BERT): 0.5430852619514253
- Combined Prediction Score: 0.8700928709663159
- Mean Citation Score: 467.776074
- Max Citation Score: 480.37216
- Similarity Product: 431.7634296043777

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