Patent ID: 7704256
Filing Date: 2010-04-27
Classification: A61B,A61F

Abstract:
1. A system for creating a cavity in a vertebral body and injecting a flowable material into the cavity, comprising a tool for establishing a percutaneous access path to a vertebral body having a cortical wall enclosing a cancellous bone volume the tool having a distal end, a proximal end, and an inner diameter, a cavity creation device sized and configured for introduction into the vertebral body through a percutaneous access path to form a cavity in the cancellous bone volume, and a filling device sized and configured for placing a volume of filling material having a viscosity forming a bolus when expelled in the cavity through the percutaneous access path, the filling device comprising a tube for conveying the filling material through the percutaneous access path, the tube having a distal end region sized and configured for placement within the cavity and having an exterior surface permitting the distal end region to rotate within the cavity, the distal end region including a sidewall and a side dispensing port in the sidewall for conveying a volume of filling material into the cavity, wherein the distal end region includes a terminus that is closed such that the filling material can flow out of the filling device only from the side dispensing port, the side dispensing port having an edge shaped and structurally configured to sever a bolus of the filling material when the distal end region of the filling device is rotated within the cavity; and a filling material dispenser attachable to the filling device and configured to inject the filling material through the filling device and into the cavity in the vertebral body, wherein the filling device is rotatable relative to the filling material dispenser to permit the filling device to sever the bolus without rotating the filling material dispenser.