PATENT CLAIM ANALYSIS

Application Number: 15868882
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["606", "275000"]

Abstract:
A pedicle screw has quadruple screw threads capable of moving forward a long distance in a bone upon rotation. For a screw to be embedded in a dense cortical bone of a vertebra, the threads include relief screw threads, to strongly couple with bone tissue in the cortical bone. For a screw to be embedded in a cancellous bone of the vertebra, two lines of threads (odd or even) include relief screw threads while the other two lines of threads include intaglio screw threads, thereby more strongly coupling with relatively soft cancellous bone tissue. The threads are provided in the whole pedicle screw, to move forward at 4-fold higher speed than a single screw thread, and intaglio screw threads are formed at a position to which the cancellous bone is fixed, so that cancellous bone tissues penetrate between the intaglio threads, thereby strongly coupling to the cortical and cancellous bones.

Claim (Index 1):
A pedicle screw with quadruple screw threads, comprising:\n a screw body extending from a proximal end to a distal end, so as to be fixed to a vertebra; a joint head provided at an end of the screw body; a first screw part, which is formed from the proximal end of the screw body and has a quadruple screw thread pattern for fixing the same to a cortical bone; and a second screw part, which is formed following the first screw part toward the distal end and has another quadruple screw thread pattern for fixing the same to a cancellous bone, wherein the quadruple screw pattern formed in the first screw part is a relief pattern throughout the same, while two lines of screw threads (odd or even lines) in the second screw part are formed in relief but an other two lines of screw threads (even or odd lines) in the same are formed in intaglio.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 86.0
- Lexical Diversity: 2.24658
- Patent Class: 606.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14212246', '11684764', '10583422', '13771076', '15535783']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7384523988821025
- 35 USC 102 Novelty (BERT): 0.4792304983985541
- Combined Prediction Score: 0.7125302088337476
- Mean Citation Score: 231.03866
- Max Citation Score: 243.02104
- Similarity Product: 183.9466550929021

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

Dataset: test