SURGICAL INSTRUMENT FOR MECHANICAL REMOVAL OF BONE CEMENT

摘要

In a surgical instrument for the mechanical removal of bone cement (2), comprising a longitudinal housing (4) with a cylinder (6) in which a piston element can be reciprocated by a drive means (14), wherein the piston element on the distal end (18) of the cylinder (6) exerts an impact on a chisel tool supported axially in the housing (4), it is provided that the piston element (10) comprises a projectile (10) adapted to be accelerated to a high final speed and inducing a shock wave into the chisel tool comprising a metallic shock wave transmission probe (22), the probe tip (26) of the chisel tool transmitting the shock wave to the bone cement (2) at a low movement amplitude of the probe tip (26).