Design and Simulation of an Integrated Wireless Capacitive Sensors Array for Measuring Ventricular Pressure

This paper reports the novel design of a touch mode capacitive pressure sensor (TMCPS) system with a wireless approach for a full-range continuous monitoring of ventricular pressure. The system consists of two modules: an implantable set and an external reading device. The implantable set, restricte...

Full description

Saved in:
Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2018-08, Vol.18 (9), p.2781
Main Authors: Hernández-Sebastián, Natiely, Díaz-Alonso, Daniela, Renero-Carrillo, Francisco Javier, Villa-Villaseñor, Noé, Calleja-Arriaga, Wilfrido
Format: Article
Language:English
Subjects:
Adipose Tissue
Biocompatibility
Blood pressure
Coiling
Computer simulation
Design
Electric Capacitance
Equipment Design
Heart failure
Humans
Hypertension
Measurement techniques
Microelectromechanical systems
Monitoring, Physiologic - instrumentation
Muscles
Power
Power efficiency
Pressure sensors
Prostheses and Implants - economics
Pulmonary arteries
Sensor arrays
Sensors
Skin
Transmission efficiency
Veins & arteries
Ventricular Pressure
Wireless Technology - economics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper reports the novel design of a touch mode capacitive pressure sensor (TMCPS) system with a wireless approach for a full-range continuous monitoring of ventricular pressure. The system consists of two modules: an implantable set and an external reading device. The implantable set, restricted to a 2 × 2 cm² area, consists of a TMCPS array connected with a dual-layer coil, for making a reliable resonant circuit for communication with the external device. The capacitive array is modelled considering the small deflection regime for achieving a dynamic and full 5⁻300 mmHg pressure range. In this design, the two inductive-coupled modules are calculated considering proper electromagnetic alignment, based on two planar coils and considering the following: 13.56 MHz frequency to avoid tissue damage and three types of biological tissue as core (skin, fat and muscle). The system was validated with the Comsol Multiphysics and CoventorWare softwares; showing a 90% power transmission efficiency at a 3.5 cm distance between coils. The implantable module includes aluminum- and polyimide-based devices, which allows ergonomic, robust, reproducible, and technologically feasible integrated sensors. In addition, the module shows a simplified and low cost design approach based on PolyMEMS INAOE technology, featured by low-temperature processing.
ISSN:1424-8220
1424-8220
DOI:10.3390/s18092781