Spinal bone crusher

Abstract

A spinal bone crusher includes a main body and a crushing roller. A bone crushing chamber is formed in the main body, and includes an inlet section, a crushing section, and an outlet section. A bone fragment inlet and a bone fragment outlet are formed in the main body; and the bone fragment inlet is communicated with the inlet section, and the bone fragment outlet is communicated with the outlet section. A rotating handle and a first threaded portion are disposed on the crushing roller, and first crushing threads are formed on the first threaded portion. A second threaded portion is disposed on an inner wall of the crushing section, and second crushing threads are formed on the second threaded portion. Bone fragments are extruded and crushed, and a gap for passage of crushed bone fragments is formed between the first crushing threads and the second crushing threads.