[Medical devices based on the use of controllable rarefaction]

Present-day medical requirements for the suction of tissue fluids, gases, particles at surgery, intensive care, gynecological care, and therapy are formulated. The rarefaction control system via vacuum scouring is shown to differ from an automatic control system greatly. The principles and engineering principles in the design of automatic vacuum controlling aspirators are described. Technical data of a new OKhVR2-1 aspirator and a RVP-1 postoperative vacuum controller (Avionika) are given.