Patent ID: 8926524
Filing Date: 2015-01-06
Classification: A61B

Abstract:
1. A biomedical pressure sensor for intraocular pressure measurements comprising: a flexible substrate; a flexible planar inductor mounted on the flexible substrate; a flexible diaphragm chamber mounted on the flexible substrate; wherein the flexible diaphragm chamber and the flexible substrate are made of biocompatible material Parylene C; one or more upper capacitor plates in or on an upper portion of the diaphragm chamber, wherein the one or more upper capacitor plates are electrically connected to the flexible planar inductor; one or more lower capacitor plates in or on a lower portion of the diaphragm chamber, wherein the one or more lower capacitor plates are electrically connected to the flexible planar inductor; wherein the upper portion of the diaphragm chamber is shaped as a dome, configured to direct external pressure on a surface of the dome into the flexible diaphragm chamber; a rigid pressure reference chamber in fluidic communication with the flexible diaphragm chamber, wherein the pressure reference chamber comprises a structure disposed external to the flexible substrate; wherein the flexible substrate is configured to be folded to have a length no greater than 4 mm and a width no greater than 2 mm without bending or folding the diaphragm chamber, the one or more upper capacitor plates and the one or more lower capacitor plates; and wherein the biomedical pressure sensor is fabricated using monolithic microfabrication.