Teimour Maleki Jafarabadi,Babek Ziaie,Girish Chitnis,Louis B. Cantor
申请号：
US13639886
公开号：
US20130046166A1
申请日:
2011.04.06
申请国别(地区):
US
年份:
2013
代理人:
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, and a pressure monitoring apparatus configured to receive the first signal and transmit the second signal. The pressure monitoring apparatus includes a capacitive pressure sensor assembly, an insertion needle assembly, and a coil assembly. The insertion needle assembly, having an insertion opening, is coupled to the capacitive pressure sensor assembly, wherein fluid pressure at the insertion opening is fluidly communicated with the capacitive pressure sensor assembly. The coil assembly, having an inductance, is 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.
