Methods and devices for removing abnormalities from bone

摘要

Various exemplary methods and devices are provided for removing abnormalities from bone. In general, the methods and devices can be used to allow excess bone to be scraped from a bone surface. In an exemplary embodiment, a scraper tool is provided that includes an elongate shaft having a plurality of blades movably disposed therein. The blades can be configured to move as a unit between a retracted configuration, in which the blades can be entirely disposed within the elongate shaft, and an advanced configuration, in which at least a portion of the blades can extend distally from the elongate shaft and/or flare away from one another. A distal portion of each of the blades can have a radius of curvature corresponding to a radius of curvature of the bone to be scraped.

主权项

1. A surgical device, comprising:
an elongate shaft having an inner passageway extending therethrough in at least a distal portion thereof, the elongate shaft being configured to be advanced into a body of a patient; and a plurality of blades, each having a curved distal end configured to contact a bone of the patient, the plurality of blades being selectively translatable longitudinally along the elongate shaft as a unit between a retracted configuration in which the plurality of blades are disposed within the inner passageway and an advanced configuration in which the plurality of blades are advanced out of the inner passageway such that the curved distal ends are outside the inner passageway and collectively define a surface of a sphere, the plurality of blades being configured to move away from one another when the plurality of blades move from the retracted configuration to the advanced configuration.