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US 11,109,770 B2Granted
Patient monitoring system
AssigneeMasimo Corporation
InventorsMarcelo M. Lamego, Massi Joe E. Kiani, Jeroen Poeze, Cristiano Dalvi, Hung Vo
Life of this patent
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Abstract
A patient monitoring system includes an inflatable cuff, a gas reservoir containing a compressed gas, and a sensor. When the inflatable cuff is coupled to a wearer, the gas reservoir supplies gas to the inflatable cuff to inflate the inflatable cuff via gas pathways. As the inflatable cuff inflates, a patient monitor can receive blood pressure data from the sensor and use the blood pressure data to determine the blood pressure of the wearer. The patient monitor can also receive blood pressure data during deflation of the inflatable cuff to determine the blood pressure of the wearer.
Claims15
A method of determining one or more blood pressure measurements, the method comprising:
- inflating an inflatable cuff configured to encompass a limb of a monitored patient using a gas reservoir storing compressed gas;
- receiving a plurality of data signals from one or more sensors configured to measure pressure inside the inflatable cuff during the inflating of the inflatable cuff;
- determining blood pressure data of the monitored patient based at least in part on the plurality of data signals;
- receiving one or more configuration parameters from a user interface;
- removing a first plurality of noise produced during the inflating of the inflatable cuff from the blood pressure data using a first filter to obtain first filtered blood pressure data, wherein the first filter is based at least in part on the one or more configuration parameters, wherein the first filtered blood pressure data is a first measure of pressure;
- transforming the first filtered blood pressure data to determine a pulse based at least in part on one or more transforms, wherein the pulse is a measure of frequency;
- determining a second filter based at least in part on the determined pulse;
- removing a second plurality of noise produced during the inflating of the inflatable cuff from the first filtered blood pressure data using the second filter to obtain second filtered blood pressure data, wherein the second filtered blood pressure data is a second measure of pressure;
- determining a systolic pressure and a diastolic pressure of the monitored patient based at least on the second filtered blood pressure data;
- determining one or more of the systolic pressure or the diastolic pressure satisfy the one or more configuration parameters;
- based at least in part on determining one or more of the systolic pressure or the diastolic pressure satisfy the one or more configuration parameters, deflating the inflatable cuff by releasing the compressed gas from the inflatable cuff;
- and
- causing display, via the user interface, of physiological parameter information based on at least one of the systolic pressure or the diastolic pressure.
10 more elements
A patient monitoring system comprising:
- an inflatable cuff configured to encompass a limb of a monitored patient and inflate using a gas reservoir storing compressed gas;
- one or more sensors configured to detect a plurality of data signals during inflating of the inflatable cuff;
- one or more processors configured to:
- determine blood pressure data of the monitored patient based at least in part on the plurality of data signals;
- receive one or more configuration parameters from a user interface;
- remove a first plurality of noise produced during the inflating of the inflatable cuff from the blood pressure data using a first filter to obtain first filtered blood pressure data, wherein the first filter is based at least in part on the one or more configuration parameters, wherein the first filtered blood pressure data is a first measure of pressure;
- transform the first filtered blood pressure data to determine a pulse based at least in part on one or more transforms, wherein the pulse is a measure of frequency;
- determine a second filter based at least in part on the determined pulse;
- remove a second plurality of noise produced during the inflating of the inflatable cuff from the first filtered blood pressure data using the second filter to obtain second filtered blood pressure data, wherein the second filtered blood pressure data is a second measure of pressure;
- and
- determine a systolic pressure and a diastolic pressure of the monitored patient based at least on the second filtered blood pressure data
- determine one or more of the systolic pressure or the diastolic pressure satisfy the one or more configuration parameters;
- based at least in part on determining one or more of the systolic pressure or the diastolic pressure satisfy the one or more configuration parameters, deflate the inflatable cuff by releasing the compressed gas from the inflatable cuff;
- and
- cause display, via the user interface, of physiological parameter information based on at least one of the systolic pressure or the diastolic pressure.
12 more elements
Dependencies are inferred from the claim text.