Blood Pressure Monitoring System Including a Liquid Filled Sensor

A blood pressure measurement device, comprising:

• a strap operable to couple the blood pressure measurement device to a user, the strap comprising an inflation chamber configured to expand toward the user when inflated;
• a support plate coupled to the strap and positioned between the strap and the user when the blood pressure measurement device is worn by the user;
• a sensing chamber coupled to the support plate, positioned between the support plate and the user when the blood pressure measurement device is coupled to the user, and containing a liquid;
• a pressure sensor positioned in the sensing chamber and configured to detect a pressure of the liquid;
• and
• a vibration sensor positioned in the sensing chamber and configured to detect vibrations due to blood flow of the user.

A blood pressure measurement system, comprising:

• a smartwatch comprising:
• a housing;
• a display positioned at least partially within the housing;
• a processor positioned in the housing;
• a blood pressure measurement device comprising:
• an inflatable chamber configured to expand towards a user when inflated;
• a sensing chamber coupled to the inflatable chamber and configured to be placed between the inflatable chamber and the user, the sensing chamber containing a liquid;
• a pressure sensor positioned in the sensing chamber and configured to detect a pressure of the liquid;
• and
• a vibration sensor positioned in the pressure chamber and configured to detect vibrations due to blood flow of the user;
• and
• a strap configured to:
• couple the smartwatch to a first location on the user;
• couple the blood pressure measurement device to a second location on the user;
• and
• transmit one or more signals between the smartwatch and the blood pressure measurement device.