Multiple measurement mode in a physiological sensor
AssigneeMasimo Corporation
InventorMarcelo Lamego
Life of this patent
Estimating the term…
Abstract
In a physiological sensor that estimates a true parameter value by providing a predicted parameter value, multiple measurements are taken to increase the accuracy of the predicted parameter value. The sensor can be reapplied between measurements to decrease the probability of an erroneous prediction caused by sensor misplacement. Some measurements can be discarded before calculating a predicted parameter value. The physiological sensor can have a plurality of modes, with one of the modes corresponding to multiple measurement process.
Claims14
A system for decreasing a probability of an erroneous value of a physiological parameter caused by sensor misplacement, the system comprising:
- a physiological sensor configured to be applied to a measurement site by a user and to provide measurements indicative of the physiological parameter;
- a user interface;
- a computer-readable memory storing executable instructions;
- and
- a processor in communication with the computer-readable memory, wherein the processor is configured by the executable instructions to at least:
- receive an indication of a user selection of a multiple measurement operating mode, wherein the user selection is made from among a plurality of operating modes of the system comprising a normal operating mode and the multiple measurement operating mode,
- wherein during the normal mode, the physiological parameter is estimated based only on a single measurement, and
- wherein during the multiple measurement operating mode, the physiological parameter is estimated based on a number of distinct measurements with a reapplication of the physiological sensor to a same measurement site between measurements;
- in response to receiving the indication of the user selection of the multiple measurement operating mode, output, to the user interface, instructions for the user to obtain the number of distinct measurements using the physiological sensor and to reapply the physiological sensor between each of the distinct measurements;
- obtain at least some of the distinct measurements of the number of distinct measurements, wherein, to obtain the at least some of the distinct measurements, the processor is configured to:
- output, to the user interface, instructions for the user to remove the physiological sensor from the measurement site and reapply the physiological sensor to the measurement site,
- receive an indication from the user that the physiological sensor has been removed and reapplied, and
- receive from the physiological sensor a measurement indicative of the physiological parameter after receiving the indication from the user that the physiological sensor has been removed and reapplied;
- determine a confidence value from the number of distinct measurements corresponding to the same measurement site;
- and
- calculate a final value for the physiological parameter based on the acquired number of distinct measurements.
Dependencies are inferred from the claim text.