MICROWAVE DEVICE FOR DETECTING AIR EMBOLI

Award Information
Agency:
Department of Health and Human Services
Branch
n/a
Amount:
$500,000.00
Award Year:
1993
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
16371
Agency Tracking Number:
16371
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
9 Goldsmith Street, Littleton, MA, 10460
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Grabowy, Richard S
Principal Investigator
(508) 486-3003
Business Contact:
1 R43 CA52345-01A2
() -
Research Institution:
n/a
Abstract
ACCIDENTS INVOLVING THE INTRODUCTION OF AIR EMBOLI IN THE CORONARY OR CEREBRAL CIRCULATION PATHS THROUGH CARDIOTOMY OR PUMP OXYGENATOR PROCEDURES CAN RESULT IN DEVASTATING INJURY. WE WILL DEVELOP A NON-INVASIVE MECHANISM FOR QUICKLY AND ACCURATELY DETECTING THE PRESENCE OF AIR EMBOLI IN THE INFUSION PATH AND THUS HELP REDUCE THE RISK OF SUCH PROCEDURES. THE GOAL IS TO ADAPT AN EXISTING MICROWAVE RADIOMETRY SYSTEM WITH APPROPRIATE TARGET ANTENNAS TO "SEE" AIR EMBOLI TRAVELING THROUGH PLASTIC OR GLASS TUBING USED TO DELIVER FLUID/BLOOD TO A PATIENT. THIS RADIOMETRIC TECHNIQUE MONITORS THE NOISE LEVEL EMITTED BY FLUID FLOWING THROUGH A TRANSDUCER CONTAINING A MICROWAVE ANTENNA. SINCE THE NOISE LEVEL OF THE TARGET IS A FUNCTION OF ITS DIELECTRIC PROPERTIES, THIS SYSTEM WILL IN EFFECT MONITOR THE FLUID-TO-AIR RATIO OF THE MEDIA WITHIN THE BORESIGHT OF THE ANTENNA. USING THIS PRINCIPLE, TRANSDUCERS AND ASSOCIATED CIRCUITRY WILL BE DEVELOPED TO OPTIMALLY DETECT THE PRESENCE OF EVEN VERY SMALL AIR EMBOLI WITHIN INFUSION LINES. THE SENSITIVITY AND SPECIFICITY OF THE SYSTEM WILL BE DETERMINED AS RELATED TO PARAMETERS SUCH AS TUBING SIZE, FLUID TYPE, FLUID FLOW RATE, FLUID LINE PRESSURE, FLUID TEMPERATURE AND AIR BUBBLE SIZE.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government