Medical instrument for ablation of tissue

Medical instrument for tissue ablation by a minimally invasive surgical procedure, comprising

• a hollow outer shaft,
• an inner shaft configured as a hollow tube, and
• a control portion at a proximal end of the medical instrument, in order to position the hollow outer shaft,
• characterized in that
• an attachment for mechanical ablation of tissue is arranged directly at a distal end of the inner shaft,
• wherein the attachment does not protrude beyond an inner profile formed by inner faces of the outer shaft, and wherein the distal end of the attachment protrudes axially beyond the distal end of the hollow outer shaft in order to ablate tissue, and
• further comprising an elongate receiving element with a cutout or seat for temporarily receiving the attachment for mechanical ablation of tissue, wherein the elongate receiving element is axially adjustable relative to the inner shaft between a deployed position, in which the attachment for mechanical ablation of tissue is temporarily received in the cutout or seat, and a retracted position, in which the attachment for mechanical ablation of tissue protrudes axially beyond the distal end of the hollow outer shaft and is accessible for tissue ablation.