Hollow Reamer
Also called Extraction reamer, Reverse trephine
A hollow tube with saw teeth around its cutting end and a side window near the tip; a tapered left-handed thread inside the tube grips the screw. It is turned counterclockwise around a broken screw shaft, by T-handle chuck or power tool, cutting a thin ring of bone until the inner thread catches the screw and unscrews it.
Primary uses
What this instrument is on the table to do.
Removing a broken or deep-seated screw shaft. The surgeon first enlarges the hole with a countersink, then drills counter-clockwise around the shaft with the hollow reamer, and finally removes the shaft with an extraction bolt or pliers.
Sizes & variants
The lengths, angles and patterns it comes in.
OPERACE extraction reamers by screw diameter: 2.0 (screws 1.4-2.0 mm, REF 80009), 2.5 (2.1-2.5, 80028), 3.2 (2.6-3.2, 80029), 4.0 (3.3-4.0, 80030), 4.5 (4.1-4.5, 80033), 5.8 (4.6-5.8, 80035), 7.5 (5.9-7.5, 80015). Sterile, single use; used with a Small Universal Chuck with T-Handle or a power tool.
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