PRESSURE GAUGE, BLOOD PRESSURE GAUGE, METHOD OF DETERMINING PRESSURE VALUES, METHOD OF CALIBRATING A PRESSURE GAUGE, AND COMPUTER PROGRAM

摘要

A pressure gauge (100; 700) for determining at least one pressure value (122) describing a pressure of a fluid flowing in a pulsating manner in a phase of the pulsating flow, comprises a pulse wave characterizer (110). The pulse wave characterizer (110) is configured to obtain transmit time information (112) describing a transmit time of a pulse wave between a first location and a second location, and amplitude information (114) describing a change in a measurement signal, which is based on the pulse wave, between two phases of the pulse wave. The pressure gauge (100; 700) additionally comprises a pressure value determiner (120) configured to obtain a first pressure value (132) describing a pressure of the fluid in a first phase of the pulsating flow, on the basis of the transmit time information (112) and while using a mapping (134) which maps the transmit time of the pulse wave to the first pressure value (132). The pressure value determiner (120) is further configured to obtain a second pressure value (136) describing a pressure of the fluid in a second phase of the pulsating flow, on the basis of the first pressure value (132) and the amplitude information (114) while using a mapping (138) which maps a relationship, which depends on the first pressure value (132), between the first pressure value (132), the second pressure value (136) and the amplitude information (114).