Drill bit and method for producing a drill bit
AssigneeSurgibit IP Holdings Pty Limited
InventorLiam Patrick Ellis
Life of this patent
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Abstract
A drill bit including a shaft which has a pyramidal shaped end defining a drill tip with a plurality of edges defining the pyramidal shape. One or more recesses are provided for directing away debris produced whilst drilling. At least one recess has a first portion extending along the shaft and a second portion having a first portion extending along the shaft and a second portion which extends along the drill tip. The second portion of the at least one recess extends along an edge of the drill tip.
Claims16
A medical device for use during surgery, said device comprising a shaft and a tapered tip for drilling into a surface of body material;
- the tip including a plurality of faces, each face having at least two sub-faces formed and arranged to define a generally pyramidal shaped remote end terminating in an extreme drill point whereby the remote end is adapted to pierce the surface and thereby located the tip prior to drilling;
- and wherein
- the shaft and tip includes at least one flute having a first portion and a second portion;
- wherein the first portion is generally helical and extends at least partially along the shaft;
- wherein the second portion is formed in the tip and associated with a respective sub-face and extends partway along the tip behind the drill point;
- wherein the second portion includes a groove formed in the tip and adjacent at least one edge of the respective sub-face, thereby to enhance the cutting ability of the tip;
- and
- wherein the first portion intersects with the second portion to direct debris away from the tip during drilling.
Dependencies are inferred from the claim text.