Patent ID: 8721555
Filing Date: 2014-05-13
Classification: A61B

Abstract:
1. A non-invasive system for measuring central venous pressure, the system comprising: a photoplethysmography sensor and a pressure sensor adapted to be placed on a patient's skin; wherein the photoplethysmography sensor generates a photoplethysmography signal, and the pressure sensor generates a pressure signal which comprises an element for determining central venous pressure information a motion sensor which generates a motion signal comprising an indication of one or more changes in a position of the patient; and an acquisition signal processing quantification module in communication with the photoplethysmography sensor, the pressure sensor, and the motion sensor and configured to filter the photoplethysmography signal, and use the photoplethysmography signal, the pressure signal, and the motion signal to determine a measurement of respiration, the measurement of respiration relating to central venous pressure.