Japanese and American engineers have developed a compact manipulator for surgical operations, with precision of up to 26.4 per micrometer. It is powered by a small piezoelectric actuator, therefore its weight is only 2.4 grams, say the authors of the article in Nature Machine Intelligence.
In microsurgical operations doctors work with small bodies and their plots, for example, nerve endings or capillaries. To track the progress of the operation to use microscopes, which are relatively conveniently suspended above the patient. But the surgery requires the doctor very precise and accurate movements, so even a small tremor can complicate the surgery and increase the likelihood of error. For microsurgery, there are assistive robots, which are controlled by the surgeon, but they are almost always massive and expensive.
Suzuki Hiroyuki (Hiroyuki Suzuki) from Sony and Robert wood (Robert Wood) from Harvard University demonstrated a prototype of a miniature manipulator for ophthalmic microsurgical procedures. It is based on origami construction. First, the engineers created a composite sheet, the center of which is a polyimide film, and on both sides of it and glued the carbon fiber layer. After creating a sheet in it made slots, and then part of the leaf is collected in the bulk structure. In this position, has the advantage of a structure with a flexible film and a rigid carbon fiber: it works like a buffered loop mechanism.