Precessional-motion bone and dental drilling tools and bone harvesting apparatus
OwnerMichael J. Scianambloinventor
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Abstract
This document provides orthopedic and dental devices and methods for their use. For example, novel bone drills and dental drills are described. The bone and dental drills have at least some centers of mass that are offset from the drills' axis of rotation. Accordingly, the bone and dental drills may rotate and cut using a precessional pattern of motion. The design facilitates bone cutting, chip formation and hauling capacity, irrigation and bone harvesting. In some embodiments, the bone chips are collected in a removable apparatus fixed to the distal portion of the drill, and the collected bone chips can be used for bone grafting.
Claims37
A bone drill, comprising:
- a shank configured to be releasably attachable to a motor to rotate the bone drill about an axis of rotation;
- and
- a drill body extending directly from the shank, the drill body including a shank end where the drill body extends from the shank and a free end at an end of the drill body that is opposite of the shank end, the drill body including a cutting portion between the shank end and the free end, the drill body having a center of mass at each transverse cross-section of the drill body, wherein a center of mass of a transverse cross-section at the shank end is offset from the axis of rotation and a center of mass of a transverse cross-section at the free end lies on the axis of rotation.
A bone drill, comprising:
- a shank configured to be releasably attachable to a motor to rotate the bone drill about an axis of rotation;
- and
- a drill body extending directly from the shank, the drill body including a shank end where the drill body extends from the shank and a free end at an end of the drill body that is opposite of the shank end, the drill body including a cutting portion between the shank end and the free end, the drill body having a center of mass at each transverse cross-section of the drill body, wherein a center of mass of a transverse cross-section at the shank end is offset from the axis of rotation and a center of mass of a transverse cross-section at the free end is offset from the axis of rotation, and wherein a distance from a center of mass of each transverse cross-section between the shank end and the free end is offset from the axis of rotation by a substantially consistent distance.
Dependencies are inferred from the claim text.