Johns Hopkins University

The United States of America, As Represented by the Secretary, Department of Health and Human Services

Neuraxis, LLC

Neuraxis Technologies LLC

Ryan M Kretzer

Jeffrey I Gordon

Bryan W Cunningham

Jon Gardner Wilkes

Dan Alexander Buzatu

Richard D Beger

Pierre Alusta

Inessa Im

Bruce Pearce

Compression-distraction spinal fixation systems, and methods of performing compression-distraction spinal fixation, are provided that include screw-rod constructs having a ratcheting mechanism. Bone screws of the screw-rod constructs can have a pawl that engages ratchet teeth on the rod of the screw-rod construct. The bone screw can be unidirectionally ratcheted along the length of the rod to apply compressive or distractive forces. Tools for manipulation of the screw-rod constructs are also provided, which tools include distal tips configured to engage the bone screws.

Compression-distraction spinal fixation system and kit

A system and method for preprocessing magnetic resonance spectroscopy (MRS) data of brain tissue for pattern-based diagnostics is disclosed. The MRS preprocessing system includes an MRS preprocessing module that executes an operation that normalizes MRS spectrum data, recalibrates and scales the normalized MRS spectrum data, and then renormalizes the scaled MRS spectrum data. The resulting preprocessed MRS data is used to assist in identifying abnormalities in tissues shown in MRS scans.

System for magnetic resonance spectroscopy of brain tissue for pattern-based diagnostics

Compression-distraction spinal fixation systems, and methods of performing compression-distraction spinal fixation, are provided that include screw-rod constructs having a ratcheting mechanism. Bone screws of the screw-rod constructs can have a pawl that engages ratchet teeth on the rod of the screw-rod construct. The bone screw can be ratcheted along the length of the rod to apply distractive or compressive forces.

Compression-distraction spinal fixation system

Growing community of inventors

Baltimore, MD, United States of America

Ryan M Kretzer