USRE28003E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic demand heart pacemaker with different pacing and standby rates
Assignee: MED REL Inc
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Filing: 1972-06-30
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Granted: 1974-05-07
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Expires: 1992-06-30
Abstract
Abstract A DEMAND TYPE HEART PACER WHICH PROVIDES ELECTRONICALLY GENERATED STIMULATING PULSES TO THE HEART AT A FIRST FREQUENCY IN THE CONTINUED ABSENCE OF NATURAL HEARTBEATS, BUT WHICH INHIBITS OUTPUT PULSES ONCE THE NATURAL HEART RATE EXCEEDS THE FIRST FREQUENCY, AND ALLOWS THE HEART TO BEAT NATURALLY AT ANY RATE ABOVE A SECOND, LOWER FREQUENCY BEFORE AGAIN PROVIDING STIMULATING PULSES, THEREBY CREATING A DIFFERENT STANDBY FREQUENCY. THE PACER ALSO REVERTS TO A THIRD FREQUENCY IN A NON-DEMAND TYPE OPERATION IN THE PRESENCT OF AN INTERFERING ELECTRICAL NOISE PATTERN.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:37
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/362; A61N1/365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |