Abstract: Implantable pressure measuring unit for internal pressure measurement in a blood vessel or heart of a patient, having a pressure sensor having electrical signal output, fixing means adapted to the intended measurement location for fixing the pressure sensor, a power supply unit of the pressure sensor, a signal detection unit connected by a line to the signal output of the pressure sensor, and a transmitting unit connected to a measurement data output of the signal detection unit, in particular for wireless transmission of measurement data to an analysis unit, in particular outward from the patient body.

Abstract: Disclosed is a thin dielectric inorganic layer overlaying a substrate, and having a thickness of.ltoreq. about 20 nm and a defect density of.ltoreq. about 0.6 defects/cm.sup.2 determined by BV measurements.Also disclosed is a method of forming such a layer, according to which a layer having the desired composition and thickness is formed on a substrate, followed by an ion implantation into the substrate through the layer with a dose of.gtoreq. about 10.sup.15 ions/cm.sup.2 and a subsequent anneal at a temperature of.gtoreq. about 500.degree. C. for a predetermined time.

Abstract: Disclosed is a thin dielectric inorganic layer overlaying a substrate, and having a thickness of .ltoreq. about 20 nm and a defect density of .ltoreq. about 0.6 defects/cm.sup.2 determined by BV measurements.Also disclosed is a method of forming such a layer, according to which a layer having the desired composition and thickness is formed on a substrate, followed by an ion implanatation into the substrate through the layer with a dose of .gtoreq. about 10.sup.15 ions/cm.sup.2 and a subsequence anneal at a temperature of .gtoreq. about 500.degree. C. for a predetermined time.