Patent application number | Description | Published |
20080243192 | Passive Screw Locking Mechanism - Methods and devices are provided for passively locking a bone screw within a bone plate. In particular, the methods and devices allow a bone screw to be locked within a thru-hole in a bone plate without requiring any additional locking steps. In an exemplary embodiment, an annular feature is provided in a thru-hole of a bone plate, or in a bushing that is disposed within a thru-hole of a bone plate, for engaging a bone screw. The annular feature can be configured such that it allows the bone screw to be inserted through the thru-hole at various insertion angles while still being effective to prevent back-out of the bone screw, thereby locking the screw to the plate. | 10-02-2008 |
20090088782 | Flexible Spinal Rod With Elastomeric Jacket - A flexible rod for use in spinal stabilization having a tube having a helical slit defining a gap and an elastomeric jacket provided in the throughbore of the tube, within the gap, and upon the outer surface of the tube. | 04-02-2009 |
20090326583 | Posterior Dynamic Stabilization System With Flexible Ligament - A posterior dynamic spinal stabilization system having a sock or sleeve as the ligament to join a split rod so that during flexion, the ligament becomes taut to create an elongation limit, and during extreme extension, the upper and lower bumpers come together, thereby preventing further extension. | 12-31-2009 |
20100069967 | Instruments and Methods For Holding A Bone Plate - An instrument for insertion and placement of dynamic spinal fixation plates is provided. In general, the instrument is a clip that holds the plate at its maximum extension for implantation. | 03-18-2010 |
20100211104 | Dual Spring Posterior Dynamic Stabilization Device With Elongation Limiting Elastomers - A Posterior Dynamic Stabilization device that comprises a dual lead titanium spring, a polymer core component disposed within the spring, and a bone anchor attachment feature, wherein the dual rod comprises an intermediate spring portion comprising first and second springs, each spring having a helical intermediate portion, the helical intermediate portions oriented to form a double helix. | 08-19-2010 |
20100211105 | Telescopic Rod For Posterior Dynamic Stabilization - A Posterior Dynamic Stabilization (PDS) device having a telescopic sub-assembly that allows axial movement but restricts bending, shear and in some configurations torsion, and an outer polymeric sleeve component that primarily resists elongation and axial rotation but also encapsulates the telescopic assembly to prevent tissue ingrowth. | 08-19-2010 |
20100331886 | Posterior Dynamic Stabilization Device Having A Mobile Anchor - A posterior dynamic spinal stabilization device utilizing a spinal rod, a fixed anchor, a mobile anchor adapted for both translation and pivoting, a mobile anchor-limiting stop affixed to the rod and an optional bumper-type, a rod with at least one limiting stop. It allows predetermined and prescribed interpedicular motion. It allows the use of traditional pedicle screw-rod placement techniques in a flexible system possessing many treatment options using familiar components that are familiar to the surgeon, and can be used on multiple levels (especially to top off) and can transition loads by limiting displacements. | 12-30-2010 |
20110015685 | GUIDE FOR SPINAL TOOLS, IMPLANTS, AND DEVICES - A guide device is provided for use with a spinal fixation element that has at least one pair of thru bores formed therein. The guide device generally includes an elongate shaft having a proximal end and a distal end. A guide member is coupled to the distal end of the elongate shaft and it includes at least one pathway extending therethrough, and at least one alignment element that is positioned distal of the guide member. Each alignment element(s) is adapted to interact with a spinal fixation element to position the guide member with respect to the spinal fixation element such that the each pathway in the guide member is aligned with a corresponding thru bore formed in the spinal fixation element. The guide member can then be used to guide tools, devices, and/or implants through each pathway in the spinal fixation element and into bone. | 01-20-2011 |
20110093021 | Bone Anchor Assemblies and Methods of Manufacturing and Use Thereof - A bone anchor assembly includes a bone anchor having a proximal head and a distal shaft configured to engage bone, a receiver member for receiving a spinal fixation element to be coupled to the bone anchor, an insert positioned in the proximal end of the receiver member having a pair of spaced apart insert arms defining a recess therebetween, and a closure mechanism positionable between and engaging the insert arms to capture a spinal fixation element within the recess of the insert and fix the spinal fixation element with respect to the receiver member. | 04-21-2011 |
20110238119 | Composite Material Posterior Dynamic Stabilization Spring Rod - The present invention provides a Posterior Dynamic Stabilization (PDS) device that allows elongation, which is a critical requirement for a PDS device as it allows pedicles to travel naturally in flexion, extension, and lateral bending of the spine. This interpedicular travel preserves a more natural center of rotation unlike other PDS devices that simply allow bending. In particular, the invention involves a PDS spring rod, wherein the helix is created with composite flow molding (CFM) technology and comprises a polymer matrix reinforced with continuous carbon fibers, wherein the fibers are oriented substantially parallel to the centerline of the helix, thereby creating a high strength spring. | 09-29-2011 |
20130131731 | BONE ANCHOR ASSEMBLIES AND METHODS OF MANUFACTURING AND USE THEREOF - A bone anchor assembly includes a bone anchor having a proximal head and a distal shaft configured to engage bone, a receiver member for receiving a spinal fixation element to be coupled to the bone anchor, an insert positioned in the proximal end of the receiver member having a pair of spaced apart insert arms defining a recess therebetween, and a closure mechanism positionable between and engaging the insert arms to capture a spinal fixation element within the recess of the insert and fix the spinal fixation element with respect to the receiver member. | 05-23-2013 |
20130338715 | BONE SCREW FIXATION - Various methods and devices are provided for bone screw fixation. In one exemplary embodiment, the methods and devices provide a bone fixation device that includes a receiving head having a recess adapted to seat a spinal rod therein and a shank extending distally from the receiving head. An anti-rotation mechanism can be located distal of a distal end of the receiving head and around a proximal portion of the shank, and it can be configured to interact with bone to prevent rotation of at least a portion of the bone fixation device relative to the bone. | 12-19-2013 |
20140188177 | PASSIVE SCREW LOCKING MECHANISM - Methods and devices are provided for passively locking a bone screw within a bone plate. In particular, the methods and devices allow a bone screw to be locked within a thru-hole in a bone plate without requiring any additional locking steps. In an exemplary embodiment, an annular feature is provided in a thru-hole of a bone plate, or in a bushing that is disposed within a thru-hole of a bone plate, for engaging a bone screw. The annular feature can be configured such that it allows the bone screw to be inserted through the thru-hole at various insertion angles while still being effective to prevent back-out of the bone screw, thereby locking the screw to the plate. | 07-03-2014 |