SURGICAL CUTTING TOOL Russian patent published in 2000 - IPC

FIELD: medical equipment. SUBSTANCE: tool may be used for removal of normal and pathologically changed tissues (bones, cartilages, ligaments, cicatrices). The surgical cutting tool has longitudinal body accommodating hollow cutting member and handles. One handle is fixed immovably to body, while the other, is movable and hinged to body for displacement of hollow cutting member. Movable handle and cutting member are returned to initial position by spring. One end of hollow cutting member has circular stops for return with reciprocating moving and engagement with movable handle. External cylindrical surface of stops has inclined teeth engageable with inclined teeth made on longitudinal body. The other end of hollow cutting member has cutting edge whose internal conical surface is made fro compression of removable particles and prevention of their falling out into operation wound and its contamination. Crown in cutting is engageable with coaxial protrusion on longitudinal body. As a result, tool is made for cutting bone or cartilage tissue, particularly, in removal of falling out of intervertebral disc and ensuring higher productivity due to application of only one tool with rapid replacement in it, if required, different in diameter tubular cutting members and also automatic freeing of tool from fragments of removed tissue and reduction of load exerted on surgeon's hand, high purity of cutting out line and excluded load on treated bone in cutting out of its fragments under conditions of narrow operation field. EFFECT: prolonged service life of tool due to replacement of its cutting surfaces. 2 cl, 5 dwg