A hand-held surgical tubular product designed to simultaneously place, change the angle and direction of a rotating drill bit on hard tissue (usually bone), and to protect surrounding soft tissue while the drill bit is in operation. The article may have serrations at its distal end to ensure secure placement on hard tissue surfaces (the article is not screwed into bone); it may have a handle at its proximal end for holding and manipulating the article, or it may be held by another device (e.g., fixed in an orthopaedic holder).
The product is typically the size of a drill and is typically made of high quality stainless steel, and may have graduated markings along its length; the product is not customised for a specific patient. It is a reusable product
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