BONE MATERIAL REMOVAL DEVICES

摘要

The present invention in some embodiments thereof, relates to bone material removal devices (2100), for example, devices which change effective diameter. In some embodiments, a bone removal device comprises an expandable portion. In some embodiments, the expandable portion comprises one or more bone removing elements such as cutting teeth (2106). In some embodiments, a cutting tooth is movable between an open position, in which it is configured to widen a bore in a bone, and a closed position. In some embodiments, a cutting tooth of the bone removal device is formed with a curved, such as convex, cutting face (2114).

主权项

1. A bone material removal device (101) comprising:
an elongated shaft (107) having a longitudinal axis; at least one bone material removal element (111) for widening a bore in a bone, said element (111) coupled to said shaft (107) having a recess (115); said element (111) movable from a closed position, in which said element (111) is only partially received within the recess (115) of said shaft (107), to an open position in which said element (111) extends radially away from said shaft (107) by rotation of element (111) generally in a plane perpendicular to the longitudinal axis of the shaft; wherein a portion of said shaft (107) adjoining both longitudinal sides of the element (111) defines a generally cylindrical volume of rotation, and at least a portion of said bone removal element (111) extends radially beyond said volume of rotation when said element (111) is in said closed position.