Spinefrontier, Inc

Providence Medical Technology, Inc.

Neuraxis, LLC

Todd Saunders

Kingsley R Chin

Ernie Corrao

Shigeru Tanaka

Bruce M McCormack

Jeffrey D Smith

Edward Liou

Christopher U Phan

Matthew Ibarra

Jared Fry

Craig Henshaw

Christopher A Chang

Christine Reif

Stephen Santangelo

Krzysztof Siemionow

Jared Samuel Fry

The various embodiments described herein provide lateral mass and facet fixation implants, which may be inserted and applied via a posterior approach, using minimally invasive or less invasive techniques. The embodiments described below generally include an intrafacet implant (or 'facet implant') and a lateral mass fixation member attached to or attachable to the facet implant. The lateral mass fixation member can include one or more tabs extending from a middle portion and configured to secure the lateral mass fixation member to lateral masses of adjacent vertebrae. The tabs may be flexible, semi-rigid, or rigid, and may be collapsible to facilitate insertion of the device. Methods for delivering the lateral mass and facet fixation implants are also described.

Lateral mass fixation implant

A spinal screw assembly includes a bone-anchoring member, a washer, and a seat. The bone-anchoring member includes a main shaft, a washer head, and a spherical head. The spherical head extends upward from the top end of the main shaft and the washer head extends laterally from a location of the main shaft between the main shaft's top end and bottom end. The washer is polyaxially rotatable and positionable around the washer head and is configured to be placed at a first angle relative to the main shaft. The seat is polyaxially rotatable and positionable around the spherical head independent from the washer and is configured to be placed at a second angle relative to the main shaft, wherein the second angle is independent from the first angle.

Spinal screw assembly

Methods, systems, and devices are disclosed for cooling tissue, and in particular for applying therapeutic hypothermia to the spinal canal, tissue disposed within the spinal canal, and nerve roots extending from the spinal canal. Bone screws, intervertebral implants, stabilization rods, spinous process spacers, and other devices are described which define a chamber through which a chilled fluid, expandable gas, or other coolant means can be circulated, delivered, or activated to cool adjacent tissue. The degree of cooling can be regulated using a controller, which can be configured to increase or decrease the cooling effect based on any of a variety of measured or predicted physiological or thermodynamic properties. Methods are disclosed for implanting cooling instruments and for carrying out various treatment regimens that involve cooling tissue using such instruments.

Methods and devices for cooling spinal tissue

An implantable spinous process fixation device includes an elongated component, top and bottom pivoting wing components, arranged opposite and parallel to the elongated component and separated from it by a spacer. First and second spinous processes of first and second adjacent vertebras are clamped between a top portion of the elongated component and the top pivoting wing and between a bottom portion of the elongated component and the bottom pivoting wing, respectively, by pivoting the top and bottom pivoting wings toward the top and bottom portions of the elongated component. The clamping of the spinous processes stabilizes the positions of the adjacent vertebras and prevents them from moving relative to each other.

Spinous process fixation implant

A bone screw assembly includes a tulip-shaped seat, a bone fixation device, a ring-shaped washer, a rod and a cap. The tulip-shaped seat comprises a through opening dimensioned to receive the bone fixation device and a horizontal channel dimensioned to receive the rod. The washer is placed into the seat on top of the bone fixation device head and comprises first and second side tabs and a first pair of upward extending projections separated by a first gap and a second pair of upward extending projections separated by a second gap. The side tabs interface with a groove formed in the bottom portion of the seat. The rod is placed within the channel and positioned within a groove formed on the top surface of the washer. The cap includes first and second projections extending downward from its bottom surface and each of the first and second downward projections comprises first and second sidewise extending ridges. The first ridges of the first and second projections are aligned and placed within the first and second gaps of the washer, respectively, and interface with a first groove formed on the side portion of the seat and the second ridges interface with a second groove on the side portion of the seat when the cap is rotate.

Spinal screw assembly and screw insertion tool

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Boston, MA, United States of America

Todd Saunders