System for use in treatment of vertebral fractures

摘要

Methods and devices that displace bone or other hard tissue to create a cavity in the tissue. Where such methods and devices rely on a driving mechanism for providing moving of the device to form a profile that improves displacement of the tissue. These methods and devices also allow for creating a path or cavity in bone for insertion of bone cement or other filler to treat a fracture or other condition in the bone. The features relating to the methods and devices described herein can be applied in any region of bone or hard tissue where the tissue or bone is displaced to define a bore or cavity instead of being extracted from the body such as during a drilling or ablation procedure.

主权项

1. A medical device for treating a vertebral body, comprising:
a handle having a connector for electrically coupling the device to a power supply; a shaft extending from the handle to a working end, where a first conductive portion of the shaft is electrically coupleable to a first pole of the power supply; and an extendable element extendible from the shaft, where the extendable element is coupleable to a second pole of the power supply, such that when activated, current flows between the extendable element and the shaft; an actuation mechanism operatively coupled to the handle and configured to deform and maintain the working end into an articulated shape, where the working end is configured to remain in the articulated shape upon application of a driving force such that the articulated shape of the working end creates a cavity; and wherein an axially-extending surface portion of the working end comprises an electrical insulator positioned to direct current towards a side of the device opposite o the electrical insulator.