Strength of blood pressure pulsating wave and sensor for measuring the vascular width

摘要

Disclosed is a transducer for measuring pulse beating blood pressure wave intensity and vessel width, which comprises shells (31, 32), a transducer probe (20), a circuit board and a lead (100), the transducer probe (20) being of a double-beam elastomer structure and symmetrical. The transducer probe (20) is of a multiple-probe double-beam elastomer structure, each probe (211 - 217) has two corresponding beams (241A - 247A, 241B - 247B), on the two corresponding beams (241A - 247A, 241B - 247B) of each probe (211 - 217) is symmetrically provided a double-resistance silicon strain gauge (411A - 417A, 411B - 417B, 411C - 417C, 411D - 417D), a Wheatstone Bridge is formed by the pair of double-resistance silicon strain gauges corresponding to each probe (211-217), and the pressure of a vessel being tested by each probe (211-217) is measured by detecting the variation of the bridge voltage. The transducer is a multi-probe pressure transducer for measuring pulse beating blood pressure wave intensity and vessel width which has the features of high sensitivity and accuracy, the ability to withstand high overload, and a self-protection function.