Spine distraction implant

摘要

A spine distraction implant (1000) alleviates pain associated with spinal stenosis, facet arthropathy by expanding the volume in the spine canal, and/or neural foramen. The implant provides a spinal extension stop (1016) while allowing freedom of spinal flexion.
An apparatus for implantation between spinous processes, comprising:
a sleeve (1072) having a longitudinal passage having a first opening in a first end portion of the sleeve and a second opening in a second end portion of the sleeve;
a first flexible retention member (1084) having a first end portion extending from the sleeve at the first opening and a second end portion extending from the sleeve at the second opening and a middle portion disposed within the passage; and
a second flexible retention member (1084) having a third end portion extending from the sleeve at the first opening and a fourth end portion extending from the sleeve at the second opening and a middle portion disposed within the passage.