Patent ID: 7785337

Claim:
A surgical micro-burring instrument comprising: an outer tubular member having a proximal section, an intermediate section, a distal section, and a central lumen extending from the proximal section to the distal section, the distal section forming: a pocket fluidly connected to the central lumen, the pocket having a bottom surface and an opposed upper opening, an elevator tip extending distal the pocket, a proximal portion proximal the pocket, the proximal portion forming a tube, wherein the pocket is defined by a side wall having an upper edge including a proximal zone extending from the proximal portion, an intermediate zone extending from the proximal zone, and a distal zone extending from the intermediate zone to a distal-most end of the pocket at which the central lumen terminates, and further wherein relative to an orientation of the outer tubular member in which the bottom surface is the lowest-most surface of the pocket: the proximal zone extends downwardly from the proximal portion toward the bottom surface, the intermediate zone extends from the proximal zone at an angle of extension relative to the proximal zone that differs from an angle of extension of the proximal zone relative to the proximal portion, the distal zone extends downwardly from the intermediate zone toward the bottom surface at an angle of extension differing from the angle of extension of the intermediate zone relative to the proximal zone; and an inner tubular member rotatably received within the central lumen, a distal end of the inner tubular member forming a bur positioned within the pocket, such that upon final assembly, at least a portion of the bur is exposed relative to the outer tubular member via the upper opening of the pocket.