Ferton Holding S.a.

Ferton Holding

Joachim Schmidt

Wolfgang Merkle

Andreas Menne

Denis Klopfenstein

Thorsten Raabe

Bernard Simon

For a surgical instrument for removing distal and/or peripheral cement ( ) and/or a medullary block in a medullary cavity ( ) when endoprostheses are replaced, the surgical instrument comprising a drilling tool ( ) and an extraction tool ( ), it is provided that the drilling tool ( ) and the extraction tool ( ) comprise a bore ( ) extending coaxially to the respective tool shaft ( ) for receiving a centering bolt ( ), that the bore diameter of the coaxial bores ( ) of the drilling tool ( ) and the extraction tool ( ) is substantially adapted to the diameter of the centering bolt ( ), and that the centering bolt ( ) anchored at a predetermined location in the cement ( ) or the medullary block and the medullary space ( ) located distally below it is configured as an axial guide for the drilling tool ( ) and the extraction tool ( ), respectively.

Surgical instrument for mechanically removing bone cement

In a surgical instrument for the mechanical removal of bone cement (,), comprising a longitudinal housing (,) with a cylinder (,) in which a piston element can be reciprocated by a drive means (,), wherein the piston element on the distal end (,) of the cylinder (,) exerts an impact on a chisel tool supported axially in the housing (,), it is provided that the piston element (,) comprises a projectile (,) 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 (,), the probe tip (,) of the chisel tool transmitting the shock wave to the bone cement (,) at a low movement amplitude of the probe tip (,).

Surgical instrument for mechanical removal of bone cement, and process for production of shock waves

Growing community of inventors

Bergisch Gladbach, Germany

Joachim Schmidt