Circuit and method for measuring PSA output and energy
US4364396A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1981 |
| Grant date | Dec 21, 1982 |
| Priority date | — |
| Expiry date | Jun 15, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3706
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method for accurately measuring the energy output of a pacing system analyzer or other pulse generator. Voltage measurements are made across the output capacitor before and after the pulse is generated. These voltages are measured by a microprocessor using an analog-to-digital converter and various gating and control circuitry. By using a known value of capacitance for the output capacitor along with the voltages measured before and after the stimulation pulse is generated, the microprocessor can calculate the total amount of energy within the stimulation pulse. This value is displayed on an integral display device. Through the use of additional circuitry, measurements may be made for both atrial and ventricular stimulation pulses in a dual chamber stimulation device. Provisions have also been made for measuring the output energy for constant voltage pulse generators. This technique employs measurement of pulse width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.