Smart insole having optimized optical sensor placement

A wearable smart insole for a user having foot having a planter arch and a medial plantar artery (MPA) along the plantar arch, the wearable smart insole comprising:

• (a) a first optical sensor disposed in the insole along the MPA adjacent a toe end of the plantar arch;
• (b) a second optical sensor disposed in the insole along the MPA adjacent a heel end of the plantar arch;
• (c) a power handling circuit;
• and
• (d) an energy storage module operatively coupled with the power handing circuit to provide power to the optical sensor;
• wherein at least one of the first optical sensor and the second optical sensor disposed along the MPA in the insole provides a signal for obtaining heart rate data and blood oxygen saturation data, and wherein both the first optical sensor and the second optical sensor disposed along the MPA in the insole, in combination, are used to calculate Pulse Transit Time (PTT) for use in calculating systolic blood pressure and diastolic blood pressure.

A wearable smart insole for a user having foot having a planter arch, a medial plantar artery (MPA) along the planter arch, and a lateral plantar artery, the wearable smart insole comprising:

• (a) a first optical sensor disposed in the insole along the MPA adjacent a toe end of the plantar arch;
• (b) a second optical sensor disposed in the insole alone the MPA adjacent a heel end of the plantar arch;
• (c) a third optical sensor disposed along the lateral plantar artery in the plantar arch;
• (d) a power handling circuit;
• and
• (e) an energy storage module operatively coupled with the power handing circuit to provide power to the optical sensor;
• wherein at least one of the first optical sensor and the second optical sensor and the third optical sensor provides a signal for obtaining heart rate data and blood oxygen saturation data, and wherein at least two of the optical sensors are used, in combination, to calculate Pulse Transit Time (PTT) for use in calculating systolic blood pressure and diastolic blood pressure, and wherein all three of the optical sensors are used, in combination, to calculate pulse wave velocity (PWV) to detect at least one of diabetes and other cardiovascular issues