Intravertebral implants

摘要

Spinal tissue distraction devices that include a member which has a pre-deployed configuration for insertion between tissue layers and a deployed configuration in which the member, by change of configuration, forms a support structure for separating and supporting layers of spinal tissue.

主权项

1. An intravertebral implant for treating a vertebral body, comprising:
an elongated flexible implant having a longitudinal axis and comprising a cross-sectional size sufficiently small for insertion into a vertebral body and a plurality of passageways spaced apart along the longitudinal axis of the implant, the elongated implant curving along the longitudinal axis so as to extend more than 360 degrees about a vertical axis to define a helical configuration that substantially circumferentially encloses an internal volume, the helical configuration comprising a plurality of coils, each coil of the helical configuration being in substantial contact with any adjacent coils to substantially prevent vertical compression of the helical configuration and the passageways being in open and direct communication with the internal volume when the implant is in the helical configuration.