Patent ID: 7846105
Filing Date: 2010-12-07
Classification: A61B

Abstract:
1. A non-invasive blood pressure measurement apparatus, comprising: a main measurement circuit; and a safety protection circuit comprising at least one overpressure protection value and at least one pressurization timing value; wherein the main measurement circuit comprises: wherein the safety protection circuit comprises an assist microprocessor circuit for collecting a second cuff pressure signal of the cuff in real-time and determining a pressurization time under various modes of operation, for outputting a third control signal to the deflation valve control circuit depending on the second cuff pressure signal received from the assist pressure measurement circuit and the determined pressurization time, and for controlling operation of the deflation valve via the deflation valve control circuit based on a combination of the second cuff pressure signal and the determined pressurization time for a selected mode of operation; wherein the assist microprocessor circuit comprises: wherein when a program of the main microprocessor is dead, is running out of control, or fails to respond, the assist microprocessor circuit forcibly resets the main microprocessor by outputting a reset signal via the control signal output, and after being reset, the main microprocessor circuit outputs the second control signal to open the deflation valve and the first control signal to turn off the air pump.