Patent ID: 9119536
Filing Date: 2015-09-01
Classification: A61B

Abstract:
1. A pressure gauge for determining at least one pressure value describing a pressure of a fluid flowing in a pulsating manner in a phase of the pulsating flow, comprising: a pulse wave characterizer configured to acquire transit time information describing a transit time of a pulse wave between a first location and a second location, and amplitude information describing a change in a measurement signal, which is based on the pulse wave, between two phases of the pulse wave; and a pressure value determiner configured to acquire a first pressure value describing a pressure of the fluid in a first phase of the pulsating flow on the basis of the transit time information and while using a first mapping which maps the transit time of the pulse wave to the first pressure value, wherein the pressure value determiner is configured to acquire a second pressure value describing a pressure of the fluid in a second phase of the pulsating flow on the basis of the first pressure value and the amplitude information while using a second mapping, the second mapping describes a relationship, which depends on the first pressure value, between the first pressure value, the second pressure value and the amplitude information, the second mapping further describes a relationship between an amplitude of the measurement signal and an amplitude of the pulse wave, taking into account the first pressure value, the second mapping describes a difference between the first pressure value and the second pressure value that is dependent on the amplitude information and on the first pressure value, the second pressure value represents a systolic pressure value, and the pressure gauge is implemented by a hardware apparatus, a computer, or a combination of a hardware apparatus and a computer.