Patient monitoring system

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.

1 . (canceled) 
     
     
         2 . A method of determining one or more blood pressure measurements, the method comprising:
 receiving one or more configuration parameters from a user interface;   identifying a manner of measuring blood pressure from a plurality of manners of measuring blood pressure based at least in part on the one or more configuration parameters;   inflating an inflatable cuff configured to encompass a limb of a monitored patient using a gas reservoir storing compressed gas based at least in part on the identified manner of measuring blood pressure;   receiving blood pressure data comprising a plurality of data signals from one or more sensors configured to measure blood pressure inside the inflatable cuff during the inflating of the inflatable cuff;   filtering the blood pressure data using a first filter to obtain first filtered blood pressure data;   transforming the first filtered blood pressure data to determine a pulse, wherein the pulse is a measure of frequency;   determining a second filter based at least in part on the determined pulse;   filtering the first filtered blood pressure data using the second filter to obtain second filtered blood pressure data, wherein the first filtered blood pressure data and the second filtered blood pressure data are measures of pressure;   determining at least one of a systolic pressure or a diastolic pressure of the monitored patient based at least in part on the second filtered blood pressure data;   based at least in part on determining at least one of the systolic pressure or the diastolic pressure, 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 at least in part on the at least one of the systolic pressure or the diastolic pressure.   
     
     
         3 . The method of  claim 2 , wherein causing display, via the user interface, of the physiological parameter information is based at least in part on the one or more configuration parameters. 
     
     
         4 . The method of  claim 2 , wherein the identified manner of measuring blood pressure comprises a manner of measuring blood pressure during the inflating of the inflatable cuff. 
     
     
         5 . The method of  claim 2 , wherein filtering the blood pressure data comprises removing a first plurality of noise from the blood pressure data and wherein filtering the first filtered blood pressure data comprises removing a second plurality of noise from the first filtered blood pressure data. 
     
     
         6 . The method of  claim 2 , wherein at least one of the first filter or the second filter are based at least in part on the one or more configuration parameters. 
     
     
         7 . The method of  claim 2 , further comprising determining the at least one of the systolic pressure or the diastolic pressure satisfy the one or more configuration parameters. 
     
     
         8 . The method of  claim 2 , wherein the plurality of data signals comprises a first plurality of data signals, the method further comprising receiving a second plurality of data signals from the one or more sensors during deflation of the inflatable cuff, wherein the blood pressure data is based at least in part on the second plurality of data signals. 
     
     
         9 . The method of  claim 2 , wherein filtering the blood pressure data comprises filtering the blood pressure data using the first filter during the inflating of the inflatable cuff. 
     
     
         10 . The method of  claim 2 , wherein filtering the blood pressure data comprises filtering the blood pressure data using the first filter during deflation of the inflatable cuff. 
     
     
         11 . The method of  claim 2 , wherein transforming the first filtered blood pressure data to determine the pulse is based at least in part on blood pressure data received during deflation of the inflatable cuff. 
     
     
         12 . The method of  claim 2 , wherein determining the at least one of the systolic pressure or the diastolic pressure is further based at least in part on at least one of a lookup table or calibration curve. 
     
     
         13 . The method of  claim 2 , further comprising:
 normalizing one or more peaks in the second filtered blood pressure data according to a threshold peak value; and   determining one or more parameters of the normalized one or more peaks, wherein the at least one of the systolic pressure or the diastolic pressure is determined based at least in part on the one or more parameters.   
     
     
         14 . The method of  claim 13 , wherein the threshold peak value is determined based at least on a value of a peak with a maximum amplitude. 
     
     
         15 . The method of  claim 13 , wherein the threshold peak value is determined based at least on a location of the one or more peaks. 
     
     
         16 . The method of  claim 13 , wherein normalizing the one or more peaks comprises accounting for changes in pressure due to inflating or deflating the inflatable cuff. 
     
     
         17 . 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:
 receive one or more configuration parameters from a user interface; 
 identify a manner of measuring blood pressure from a plurality of manners of measuring blood pressure based at least in part on the one or more configuration parameters; 
 receive blood pressure data of the monitored patient based at least in part on the plurality of data signals; 
 filter the blood pressure data using a first filter to obtain first filtered blood pressure data; 
 transform the first filtered blood pressure data to determine a pulse, wherein the pulse is a measure of frequency; 
 determine a second filter based at least in part on the determined pulse; 
 filter the first filtered blood pressure data using the second filter to obtain second filtered blood pressure data, wherein the first filtered blood pressure data and the second filtered blood pressure data are measures of pressure; 
 determine at least one of a systolic pressure or a diastolic pressure of the monitored patient based at least in part on the second filtered blood pressure data; 
 based at least in part on determining at least one of the systolic pressure or the diastolic pressure, 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 at least in part on the at least one of the systolic pressure or the diastolic pressure. 
   
     
     
         18 . The patient monitoring system of  claim 17 , wherein causing display, via the user interface, of the physiological parameter information is based at least in part on the one or more configuration parameters. 
     
     
         19 . The patient monitoring system of  claim 17 , wherein the identified manner of measuring blood pressure comprises a manner of measuring blood pressure during the inflating of the inflatable cuff. 
     
     
         20 . The patient monitoring system of  claim 17 , wherein to filter the blood pressure data, the one or more processors are further configured to remove a first plurality of noise from the blood pressure data, wherein to filter the first filtered blood pressure data, the one or more processors are further configured to remove a second plurality of noise from the first filtered blood pressure data. 
     
     
         21 . The patient monitoring system of  claim 17 , wherein at least one of the first filter or the second filter are based at least in part on the one or more configuration parameters.