Patent ID: 11911188
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 18:
19. A mobile device for non-invasively monitoring a vascular health condition, the mobile device comprising:
a main body;
a pulse wave sensor mounted in the main body and configured to:
obtain a first pulse wave signal at a first time in a first contact state of an object, wherein the first contact state is a state in which the object touches the pulse wave sensor at a contact pressure of a first pressure and maintains the contact pressure of the first pressure; and
obtain a second pulse wave signal at a second time in a second contact state of the object, wherein the second contact state is a state in which, after the object touches the pulse wave sensor at the contact pressure of the first pressure, gradually increases the contact pressure to a second pressure or higher, and upon satisfaction of a condition, gradually decreases the contact pressure to the first pressure, the object maintains the contact pressure of the first pressure;

a pressure sensor configured to obtain the contact pressure of the object that comes into contact with the pulse wave sensor;
an image sensor configured to capture an image of the object that approaches the pulse wave sensor to obtain the first pulse wave signal and/or the second pulse wave signal;
a display configured to, based on the captured image of the object, display a relative position of the object with respect to a position of the pulse wave sensor; and
a processor mounted in the main body, and configured to:
correct an area of a first alternating current (AC) component of the first pulse wave signal based on a difference, obtained by using the pressure sensor, between a contact pressure of the object at the first time of obtaining the first pulse wave signal and the first pressure corresponding to the first contact state;
correct an area of a second AC component of the second pulse wave signal based on a difference, obtained by using the pressure sensor, between a contact pressure of the object at the second time of obtaining the second pulse wave signal and the second pressure corresponding to the second contact state; and
estimate a first blood volume based on the corrected area of the first AC component, estimate a second blood volume based on the corrected area of the second AC component, estimate a degree of vasodilation based on a difference between the first blood volume and the second blood volume, and output a result of a vascular health condition based on the estimated degree of vasodilation,

wherein the display is configured to output the result of monitoring the vascular health condition,
wherein the processor is further configured to provide information to guide a user to touch the pulse wave sensor with the object at the contact pressure of the first pressure, upon which the first pulse wave signal is obtained, and
wherein the processor is further configured to provide information to guide the user to increase the contact pressure to the second pressure or higher, and upon the satisfaction of the condition, to decrease the contact pressure to the first pressure.