IMPLANT DEVICE FOR TISSUE AND/OR BONE DISTRACTION, AND METHOD FOR OPERATING SUCH AN IMPLANT DEVICE

摘要

The invention relates to an implant device for tissue and/or bone distraction, preferably having elongated drive means (12, 14), which can be actuated for carrying out a stretching movement between two anchoring sections (10, 18) for tissue and/or bones, wherein the stretching movement is effected by length-variable adjusting means (20) comprising a shape memory alloy material, wherein an electric energy supply occurs from heating means (22) associated with the adjusting means in an extra-corporal manner by means of wireless energy transfer means, particularly based on high-frequency electromagnetic waves, and a switching and/or sensor device (32) is associated with the drive means for activating and/or deactivating the energy supply for the heating means such that a switching and/or detection process of the switching and/or sensor device is triggered in response to a predetermined change of length of the adjusting means and/or a predetermined stretching movement of the drive means.