Radial artery signal measuring device

A radial artery signal measuring device, comprising:

• a flexible signal sensor configured to be fixed on a first position of a skin surface over a radial artery of a wrist of a user by a patch during use, wherein the flexible signal sensor comprises:
• a flexible substrate;
• at least one infrared light source disposed on the flexible substrate and configured to emit an infrared light to the radial artery, wherein a wavelength of the infrared light is greater than 1000 nm;
• and
• a light detector disposed on the flexible substrate and configured to receive the infrared light reflected by the radial artery to generate a radial artery signal;
• a signal processor spatially separated from the flexible signal sensor to be movably disposed on a second position of the skin surface of the wrist of the user during use, wherein the signal processor comprises:
• a circuit board;
• a microprocessor disposed on the circuit board and configured to analyze the radial artery signal;
• a battery disposed on the circuit board for providing power to the microprocessor;
• and
• a housing for surrounding the circuit board, the microprocessor, and the battery, and for fitting the wrist of the user;
• and
• a flexible cable used to electrically connect the flexible signal sensor and the signal processor to transmit the radial artery signal to the microprocessor from the flexible signal sensor and transmit electrical energy to the flexible signal sensor from the battery, such that the flexible signal sensor has no displacement on the skin surface of the user when the signal processor moves on the wrist of the user.