ALAN B OSTROFF
Optometry in Philadelphia, PA
License number
Pennsylvania OB004624P
Category
Optometry
Type
Additional Practice Location
Address
Address
Philadelphia, PA 19111
Professional information
Method And Device For Measuring Subthreshold Defibrillation Electrode Resistance And Providing A Constant Energy Shock Delivery
US Patent:
5215081, Jun 1, 1993
Filed:
Dec 14, 1990
Appl. No.:
7/628700
Inventors:
Alan H. Ostroff - Philadelphia PA
Assignee:
Telectronics Pacing Systems, Inc. - Englewood CO
International Classification:
A61N 139
US Classification:
128419D
Abstract:
A method and apparatus for measuring subthreshold defibrillation electrode resistance are disclosed. A known subthreshold current pulse is sourced across the electrodes, the resulting voltage is measured and the electrode resistance is calculated from these values. The calculated electrode resistance may be utilized to adjust the energy level of a defibrillation shock used to treat a detected tachyarrhythmia. In one embodiment the calculated resistance and a predetermined leading edge voltage are used to calculate and adjust the duration of the defibrillation shock. In another embodiment the calculated electrode resistance and a predetermined shock duration are used to adjust the leading edge voltage of the defibrillation shock.