INTRAOCULAR PRESSURE MONITORING SYSTEM

摘要

A pressure monitoring system is disclosed. The pressure monitoring system includes a stimulation/response circuit configured to transmit a first signal during a stimulation mode, and receive a second signal during a response mode in response to the first signal, and a pressure monitoring apparatus configured to receive the first signal during the stimulation mode and transmit the second signal during the response mode, wherein the pressure monitoring apparatus includes a capacitive pressure sensor assembly providing a variable capacitance in response to variable pressure being applied to the capacitive pressure sensor assembly, an insertion needle assembly having an insertion opening, the insertion needle assembly being coupled to the capacitive pressure sensor assembly, wherein fluid pressure at the insertion opening is fluidly communicated with the capacitive pressure sensor assembly thereby affecting capacitance of the capacitive pressure sensor assembly, and a coil assembly having an inductance, the coil assembly being coupled to the capacitive pressure sensor assembly, wherein the coil assembly and the capacitive pressure sensor assembly form a tank circuit with a variable resonant frequency, and wherein the coil assembly receives the first signal and transmits the second signal a time difference later.