The device (110) has a cannula (118) for penetrating a skin surface (112) of a patient, where the cannula has a receiving area (124) for receiving a sensor element (114). A hydraulic container (128) is connected to the cannula for receiving hydraulic fluid (132) e.g. physiological sodium chloride solution, where the cannula and the hydraulic container form an implantation unit. A pressure generation device (142) compresses the hydraulic fluid in such a manner that the sensor element is transferred into a body tissue (116) by the hydraulic fluid of the cannula.