Electrical cardiac defibrillator
Abstract
Abstract 1. APPARATUS FOR ELECTRICALLY STIMULATING THE HEART COMPRISING: ELECTRODE MEANS, SENSING MEANS HAVING AN INPUT CONNECTED TO SAID ELECTRODE MEANS FOR SENSING CARDIAC ELECTRICAL SIGNALS, PULSE RATE DETECTOR MEANS FOR DETECTING THE AVERAGE RATE OF OCCURRENCE OF THE ORS COMPLEXES OF SAID CARDIAC ELECTRICAL SIGNALS OVER A PREDETERMINED TIME PERIOD, PULSE DURATION DETECTOR MEANS FOR DETECTING THE Q TO S PERIOD OF EACH SAID QRS COMPLEX IN SAID CARDIAC ELECTRICAL SIGNAL, SAID PULSE DURATION DETECTOR MEANS BEING CONNECTED TO SAID PULSE RATE DETECTOR MEANS TO PERMIT RATE DETECTION FOR PULSES WHOSE DURATION IS GREATER THAN A PREDETERMINED VALUE, THRESHOLD LOGIC MEANS CONNECTED TO SAID PULSE RATE DETECTOR MEANS AND SAID PULSE DURATION DETECTOR MEANS FOR PROVIDING AN OUTPUT PULSE WHEN THE AVERAGE RATE OF OCCURRENCE OF SAID QRS COMPLEXES EXCEEDS A PREDETERMINED VALUE AND A PREDETERMINED NUMBER OF SAID Q TO S PERIODS EXCEED A PREDETERMINED TIME PERIOD, AND DEFIBRILLATOR MEANS CONNECTED TO THE OUTPUT OF SAID LOGIC MEANS FOR GENERATING A DEFIBRILLATING PULSE ON SAID ELCTRODE MEANS IN RESPONSE TO RECEIVING A PULSE FROM SAID THRESHOLD LOGIC MEANS.
Inventors
- 👤 L Rubin
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |