Measurement device for non-invasive determination of blood pressure in the veins and arteries
First Claim
1. A measurement device comprising a pressure-build-up band for attachment to an extremity for non-invasive determination of venous blood pressure values in said extremity;
- a pump for building up pressure in the pressure-build-up band; and
a sensor for attachment to a finger or a toe peripherally to said pressure-build-up band, wherein said pump raises air pressure in said pressure-build-up band slowly starting at 0 mmHg and linearly with a pressure gradient of approximately 4 mmHg/s during a measurement phase and said device correlates a determination of said blood pressure values to detection of air pressure in said pressure-build-up band and a change in a vein signal detected using said sensor.
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Accused Products
Abstract
Disclosed is a process and measurement device for noninvasive determination of venous and arterial blood pressure in the arteries of the human body, particularly in the finger and toes. An occlusion band and peripherally thereto a sensor for the detection of changes in the blood volume during the pressure-buildup procedure is attached in these measurement areas. The present invention is distinguished by the pressure-buildup procedure being characterizied by a slow, preferably linear increase in air pressure in the occlusion band and the blood pressure values being determined from the change in the blood volume signal and the respective current occlusion pressure. It is possible for the first time to determine the venous pressure, the arterial diastolic pressure and the arterial systolic pressure bloodlessly during a single measurement test.
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Citations
7 Claims
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1. A measurement device comprising a pressure-build-up band for attachment to an extremity for non-invasive determination of venous blood pressure values in said extremity;
- a pump for building up pressure in the pressure-build-up band; and
a sensor for attachment to a finger or a toe peripherally to said pressure-build-up band, wherein said pump raises air pressure in said pressure-build-up band slowly starting at 0 mmHg and linearly with a pressure gradient of approximately 4 mmHg/s during a measurement phase and said device correlates a determination of said blood pressure values to detection of air pressure in said pressure-build-up band and a change in a vein signal detected using said sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a pump for building up pressure in the pressure-build-up band; and
Specification