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US 11,337,709 B2Granted
Drill bit and method for producing a drill bit
AssigneeSurgibit IP Holdings Pty Limited
InventorLiam Patrick Ellis
Life of this patent
Estimating the term…
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.
Claims17
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 tapered tip including a plurality of faces, with each face having at least two sub-faces, said plurality of 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 locate the tapered tip prior to drilling;
- at least one flute having a first portion and a second portion formed in the shaft and the tapered tip;
- wherein the first portion is generally helical and extends at least partially along the shaft;
- wherein the second portion is formed in the tapered tip and associated with a respective sub-face and extends partway along the tapered tip behind the drill point;
- wherein the second portion is configured to define a cutting edge such that the cutting ability of the cutting edge adjacent to the remote end of the tip is less than the cutting ability of the cutting edge adjacent to the shaft;
- and
- wherein the first portion intersects with the second portion to direct debris away from the tapered tip during drilling.
5 more elements
Dependencies are inferred from the claim text.