Kevin P Flaherty

US Patent:

8641734, Feb 4, 2014

Filed:

Apr 29, 2009

Appl. No.:

12/432141

Inventors:

Missoum Moumene - Newton MA, US
Payman Afshari - South Easton MA, US
Jonathan Fanger - Raynham MA, US
Kevin Flaherty - Mendon MA, US

Assignee:

Depuy Synthes Products, LLC - Raynham MA

International Classification:

A61B 17/70

US Classification:

606257, 606246, 606254, 606259, 606264

Abstract:

A Posterior Dynamic Stabilization (PDS) device that regulates physiologic spinal elongation and compression. Regulation of elongation and compression are critical requirements of Posterior Dynamic Stabilization devices. Elongation and compression of the device allow the pedicles to travel naturally as the spine flexes and extends. This interpedicular travel preserves a more natural center of rotation unlike some conventional PDS devices that simply allow bending. The device incorporates two components: 1) a spring that allows elongation/compression, and 2) a polymer core component that serves to increase the stiffness of the device in shear, bending, and tension, and also prevents soft tissue ingrowth.