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 hard tissue, comprising:
a handle having an actuating portion mechanically coupled to a working end of a shaft; the shaft comprising a first sleeve located concentrically within a second sleeve and a third sleeve located concentrically about the second sleeve, the shaft having a distal portion comprising the working end capable of moving reversibly between a linear configuration and an articulated configuration in response to movement of the actuating portion, where the articulated configuration is limited to a single plane, and where each sleeve comprises a series of slots or notches to limit deflection of the working end to the articulated configuration, where the respective series of slots or notches are radially offset in adjacent sleeves; wherein the actuating portion is temporarily lockable in a certain degree of rotation with respect to a longitudinal axis of the shaft; and a sharp tip located at a distal tip of the working end, the sharp tip adapted to penetrate hard tissue and a point of the sharp tip is offset to engage hard tissue when advanced therein to assist in deflecting the working end.