Reduced Volume Capacitor for In Vivo Defibrillator

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: 1 R43 HL52376-1,
Agency Tracking Number: 25161
Amount: $727,440.00
Phase: Phase II
Program: SBIR
Awards Year: 1995
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Patriots Park, Bedford, MA, 01730
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Anton Greenwald
 (617) 275-6000
Business Contact
Phone: () -
Research Institution
Over one-third the volume of in-the-body heart defibrillators is devoted to the capacitor, whichconsumes approximately 20 cm3; this volume could be reduced to less than 1 cm3 using provenintegrated circuit technology. Employing metalorganic chemical vapor deposition (MOCVD), we will formthin film ceramic capacitors having at least a hundred times greater energy density than is presentlyavailable from commercial products. MOCVD makes this possible by eliminating the voids and other fieldenhancing defects which limit capacitor performance. Our capacitors will be barium-strontium-titanate-based and will feature extremely high dielectric constant (over 1,000) and breakdown strength (100V/micromoles). In Phase I, a single-layer 1 mu F, 1000 V capacitor will be fabricated and demonstratedas proof-of-principle that full-sized prototype capacitors can be built in Phase Il, where they would bemade available to manufacturers of defibrillators for testing. Successful completion of this program willlead to immediate introduction of smaller devices with improved patient comfort.

* Information listed above is at the time of submission. *

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