Devices and methods for non-invasive capillary blood pressure measurement

A non-invasive capillary blood pressure measuring device, comprising:

• a front end configured to be both in direct contact with a measuring site of a subject and pressurized to change contact pressure between the front end and capillaries at the measuring site;
• a pressure transducer coupled to the front end that detects the contact pressure exerted on the measuring site by the front end;
• a pressure control module that modulates the contact pressure between the front end and the measuring site;
• a capillary sensing module that measures capillary pulsation signals at the measuring site,
• wherein the capillary pulsation signals comprise at least one of a capillary blood flow velocity, a capillary blood flow volume, and a capillary wall motion;
• a computer readable medium comprising stored instructions that when executed cause at least one processor to determine capillary blood pressure values based upon the received capillary pulsation signals measured by the capillary sensing module and the contact pressure detected by the pressure transducer;
• a microcontroller comprising a receiving unit;
• and
• a display module that displays the capillary blood pressure values.