Transcript Triggerfish
TRIGGERFISH
Glaucoma Monitoring System
BME 181
Brittany M. Alphonse Biomedical Engineering
Table of Contents
Glaucoma
Current Glaucoma
Monitoring Systems
Triggerfish Glaucoma
Monitoring System
Triggerfish System
Components
Benefits
Glaucoma
Progressive and Irreversible Disease
leads to blindness
fluid accumulates in eye
high levels of liquid inside eye
Diameter of cornea changes
Deterioration of Optic Nerve
Asymptomatic
Contributor of disease:
frequent changes in pressure over the span of a day
high peaks in levels during night
40+ years of age
4% of population is affected
Current Glaucoma Monitoring Systems
Measures static intraocular pressure
Single Snapshots in Time
Monitoring in Overnight Sleep Labs
taken during the day when pressure is lowest
cumbersome
expensive
Frequent Punctual Measurements
affects intraocular pressure
checks pressure peaks
Triggerfish System
Created by SENSIMED
First of its Kind on the
market
constant reading device
Safety Approval in
Europe last year
Expected U.S. Food and
Drug Administration
Approval in late 2011
Non-Invasive Continuous
Monitoring System
Measures Intraocular
Pressure up to 24 hours
Does Not Interfere with
Normal Vision
Constant Reading for
Fraction of Price
Triggerfish System Components
Sensor and Processor
Disposable Contact Lens
MEMS Sensor
soft
hydrophilic
silicone
sensor and microprocessor on
outer edge
strain gauge monitors diameter
change in cornea
Telemetry Microprocessor
Processes level changes
transmits to receiver
Components Continued
Antenna
Circular Antenna
taped around the eye
Sends Energy to Sensor
Receives Measurement
Information
Connected to Portable
Recorder
thin flexible data cable
Components Continued
Recorder/ Receiver
Battery Powered
Stores Measured
Information
Wirelessly Uploads
Information
Worn Around Neck
Software
Ophthalmologist
Receives Information
Visualize Intraocular
Pressure Profile
Benefits of Triggerfish System
Improved Understanding of Pressure Change
pressure
during day versus night
More Efficient
Personalized Drug Delivery and Treatment
Adapt Treatment
dependent
on changing conditions
Sensor is Placed Outside of Vision Field
Early Diagnosis and Treatment
References for Pictures
http://www.sensimed.ch/S-Trig-benefits.htm
http://www.technologyreview.com/business/24931
/page1/
http://www.sensimed.ch/S-Trig-solution.htm