Electronic device, system, and server

Abstract

An electronic device includes a memory and a controller configured to acquire a pulse wave of a subject measured by a first sensor in a non-invasive manner, analyze the acquired pulse wave to extract pulse waveform features of the subject, acquire a blood pressure level of the subject measured by a second sensor in a non-invasive manner, apply the extracted pulse waveform features and the acquired blood pressure level to an estimation formula stored in the memory to yield a blood glucose level or lipid level of the subject, and output information including the yielded blood glucose level or lipid level to a speaker, a display device, or a mobile terminal, which is configured to notify the subject of the outputted information, thereby enabling the subject to routinely manage their own state of health without collecting a blood sample.

1 . An electronic device comprising:
 a memory configured to store an estimation formula for calculating a blood glucose level or lipid level using a set of parameters, the set of parameters including pulse waveform features and a blood pressure level; and   a controller configured to:
 acquire a pulse wave of a subject measured by a first sensor in a non-invasive manner; 
 analyze the acquired pulse wave to extract pulse waveform features of the subject; 
 acquire a blood pressure level of the subject measured by a second sensor in a non-invasive manner; 
 apply the extracted pulse waveform features and the acquired blood pressure level to the estimation formula stored in the memory to yield a blood glucose level or lipid level of the subject; and 
 output information including the yielded blood glucose level or lipid level to a speaker, a display device, or a mobile terminal, which is configured to notify the subject of the outputted information, thereby enabling the subject to routinely manage their own state of health without collecting a blood sample. 
   
     
     
         2 . The electronic device according to  claim 1 , wherein the controller is configured to analyze the acquired pulse wave to extract at least pulse waveform features during a time period following a rising time period for each beat. 
     
     
         3 . The electronic device according to  claim 2 , wherein the pulse waveform features during the time period following the rising time period for each beat is an augmentation index, the augmentation index being a ratio between a forward wave and a reflected wave of the acquired pulse wave. 
     
     
         4 . The electronic device according to  claim 1 , wherein the controller is configured to analyze the acquired pulse wave to extract at least pulse waveform features during a rising time period for each beat. 
     
     
         5 . The electronic device according to  claim 4 , wherein the pulse waveform features during the rising time period for each beat is a rising index, the rising index being a ratio of a first local minimum to a first local maximum in an acceleration pulse wave yielded by a second derivative of the acquired pulse wave. 
     
     
         6 . The electronic device according to  claim 1 , wherein the controller is configured to acquire a pulse pressure as the blood pressure level of the subject, the pulse pressure being a difference between a systolic blood pressure and a diastolic blood pressure. 
     
     
         7 . The electronic device according to  claim 1 , wherein the set of parameters used for the estimation formula further includes a pulse rate, and 
 the controller is configured to:
 analyze the acquired pulse wave to also acquire a pulse rate of the subject; and 
 apply the extracted pulse waveform features, the acquired blood pressure level, and the acquired pulse rate to the estimation formula to yield the blood glucose level or lipid level of the subject. 
   
     
     
         8 . The electronic device according to  claim 1 , further comprising an input interface to be used by the subject to input an age of the subject,
 wherein the set of parameters used for the estimation formula further includes an age, and   the controller is configured to apply the extracted pulse waveform features, the acquired blood pressure level, and the inputted age to the estimation formula to yield the blood glucose level or lipid level of the subject.   
     
     
         9 . The electronic device according to  claim 1 , wherein the estimation formula is implemented as a regression model configured to accept input of the set of parameters as explanatory variables and then return output of a blood glucose level or lipid level as an objective variable. 
     
     
         10 . The electronic device according to  claim 1 , wherein the controller is configured to output the information including the yielded blood glucose level or lipid level in real time. 
     
     
         11 . The electronic device according to  claim 1 , further comprising the first sensor. 
     
     
         12 . The electronic device according to  claim 1 , further comprising an input interface to be used by the subject to input the blood pressure level of the subject,
 wherein the controller is configured to acquire the inputted blood pressure level.   
     
     
         13 . The electronic device according to  claim 1 , further comprising a communication interface configured to communicate with a sphygmomanometer including the second sensor,
 wherein the controller is configured to acquire the blood pressure level of the subject via the communication interface.   
     
     
         14 . A system comprising:
 the electronic device according to  claim 13 ; and   the sphygmomanometer.   
     
     
         15 . The electronic device according to  claim 1 , further comprising a sphygmomanometer including the second sensor. 
     
     
         16 . The electronic device according to  claim 1 , further comprising a communication interface configured to communicate with a mobile terminal,
 wherein the controller is configured to output the information including the yielded blood glucose level or lipid level to the mobile terminal via the communication interface.   
     
     
         17 . A system comprising:
 the electronic device according to  claim 16 ; and   the mobile terminal.   
     
     
         18 . A server comprising:
 a communication interface configured to communicate with an electronic device including a first sensor and with a mobile terminal;   a memory configured to store an estimation formula for calculating a blood glucose level or lipid level using a set of parameters, the set of parameters including pulse waveform features and a blood pressure level; and   a controller configured to:
 acquire a pulse wave of a subject measured by the first sensor in a non-invasive manner, via the communication interface; 
 analyze the acquired pulse wave to extract pulse waveform features of the subject; 
 acquire a blood pressure level of the subject measured by a second sensor in a non-invasive manner; 
 apply the extracted pulse waveform features and the acquired blood pressure level to the estimation formula stored in the memory to yield a blood glucose level or lipid level of the subject; and 
 output, via the communication interface, information including the yielded blood glucose level or lipid level to the mobile terminal, which is configured to notify the subject of the outputted information, thereby enabling the subject to routinely manage their own state of health without collecting a blood sample. 
   
     
     
         19 . The server according to  claim 18 , wherein the controller is configured to output the information including the yielded blood glucose level or lipid level in real time. 
     
     
         20 . A system comprising:
 the server according to  claim 18 ; and   the mobile terminal.