A device for treating spinal stenosis having an implant body structure sized and configured to be positioned between the spinous processes of two adjacent vertebrae. The device may have a body portion having a first end portion, a second end portion and a sleeve between the first and second end portions....http://www.google.com/patents/US20070032790?utm_source=gb-gplus-sharePatent US20070032790 - Apparatus for treating spinal stenosis
