PRESSURE GAUGE, BLOOD PRESSURE GAUGE, METHOD OF DETERMINING PRESSURE VALUES, METHOD OF CALIBRATING A PRESSURE GAUGE, AND COMPUTER PROGRAM
1 Assignment
0 Petitions
Accused Products
Abstract
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, includes a pulse wave characterizer. The pulse wave characterizer is configured to obtain transmit time information of a pulse wave, and amplitude information of the pulse wave. The pressure gauge additionally includes a pressure value determiner configured to obtain a first pressure value describing a pressure of the fluid in a first phase, on the basis of the transmit time information and while using a mapping. The pressure value determiner is further configured to obtain a second pressure value describing a pressure of the fluid in a second phase, on the basis of the first pressure value and the amplitude information while using a mapping.
72 Citations
65 Claims
-
1-32. -32. (canceled)
-
33. 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 transmit time information describing a transmit 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 transmit time information and while using a first mapping which maps the transmit time of the pulse wave to the first pressure value, and 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 describing a relationship, which depends on the first pressure value, between the first pressure value, the second pressure value and the amplitude information. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
-
-
55. A method of determining, while using a pressure gauge, pressure values which describe a pressure of a fluid that is flowing in a pulsating manner in at least two phases of the pulsating flow, comprising:
-
acquiring transmit time information describing a transmit time of a pulse wave between a first location and a second location; acquiring amplitude information describing a change in a measurement signal, based on a pulse wave, between two phases of the pulse wave; determining a first pressure value, which describes a pressure of the fluid in a first phase of the pulsating fluid, on the basis of the transmit time information and while using a first mapping, which maps a transmit time of the pulse wave to the first pressure value; and determining a second pressure value, which describes a pressure of the fluid in a second phase of the pulsating flow, on the basis of the first pressure value and of the amplitude information, while using a second mapping, which describes a relationship—
which is dependent on the first pressure value—
between the first pressure value, the second pressure value and the amplitude information. - View Dependent Claims (56)
-
-
57. A method of calibrating a pressure gauge configured to determine, while using a first mapping and a second mapping, at least one pressure value which describes a pressure of a fluid flowing in a pulsating manner in a phase of the pulsating flow, comprising:
-
determining a plurality of pieces of reference transmit time information describing transmit times of pulse waves between a first location and a second location for a plurality of pressure values, and a plurality of associated reference pressure values; determining the first mapping, which describes a relationship between transmit times of the pulse waves and associated pressure values, while using the reference transmit time information and the reference pressure values; and determining the second mapping, which describes a relationship, that is dependent on a first pressure value, between the first pressure value, a second pressure value and amplitude information, a qualitative course of the second mapping being specified on the basis of the first mapping. - View Dependent Claims (58, 59, 60, 61, 62, 63)
-
-
64. A tangible computer-readable medium including a computer program for performing, when the computer program is performed on a computer, a method of determining, while using a pressure gauge, pressure values which describe a pressure of a fluid that is flowing in a pulsating manner in at least two phases of the pulsating flow, the method comprising:
-
acquiring transmit time information describing a transmit time of a pulse wave between a first location and a second location; acquiring amplitude information describing a change in a measurement signal, based on a pulse wave, between two phases of the pulse wave; determining a first pressure value, which describes a pressure of the fluid in a first phase of the pulsating fluid, on the basis of the transmit time information and while using a first mapping, which maps a transmit time of the pulse wave to the first pressure value; and determining a second pressure value, which describes a pressure of the fluid in a second phase of the pulsating flow, on the basis of the first pressure value and of the amplitude information, while using a second mapping, which describes a relationship—
which is dependent on the first pressure value—
between the first pressure value, the second pressure value and the amplitude information.
-
-
65. A tangible computer-readable medium including a computer program for performing, when the computer program is performed on a computer, a method of calibrating a pressure gauge configured to determine, while using a first mapping and a second mapping, at least one pressure value which describes a pressure of a fluid flowing in a pulsating manner in a phase of the pulsating flow, the method comprising:
-
determining a plurality of pieces of reference transmit time information describing transmit times of pulse waves between a first location and a second location for a plurality of pressure values, and a plurality of associated reference pressure values; determining the first mapping, which describes a relationship between transmit times of the pulse waves and associated pressure values, while using the reference transmit time information and the reference pressure values; and determining the second mapping, which describes a relationship, that is dependent on a first pressure value, between the first pressure value, a second pressure value and amplitude information, a qualitative course of the second mapping being specified on the basis of the first mapping.
-
Specification