Due to the ageing of society, health insurers and care sectors in many Western countries are facing major challenges. Technical Assistance Systems (TAS) could have the potential to ease the situation, while at the same time promoting the independence and self-determination of care-dependent people. However, TAS have not yet been fully established in nursing. Reasons for this include an inadequate systematisation of the research and development area and the lack of uniform terminology, which leads to poor comparability and thus to missing financing models. To tackle this condition and help to select functions and technologies based on needs, we conduct a systematic review identifying needs, functions, and technologies as areas of interest addressed in 50 evaluated TAS approaches. Further, this work assesses gaps in TAS research and aims to create a uniform understanding of assistance functions.