Patent US3206768A successfully refreshed from Google Patents.
US3206768A
Expired / Lapsed
US
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Electromagnetic artificial heart having control means responsive to changes in blood pressure and body respiration rate
Assignee: RTX Corp
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Filing: 1962-06-01
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Granted: 1965-09-21
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Expires: 1982-06-01
Abstract
No abstract record available.
Inventors
- 👤 Richard J Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:52
CPC Classifications
A; A61; A61N; A61N1/00; A61M; A61M60/00; A61M60/10; A61M60/122; A61M60/196; A61M60/40; A61M60/403; A61M60/422; A61M60/50; A61M60/508; A61M60/515; A61M60/531
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
APPARATUS FOR DELIVERING BLOOD TO AT LEAST A PORTION OF THE CIRCULATORY SYSTEM OF A LIVING BODY COMPRISING AN ELECTROMAGNETIC PUMP, MEANS FOR CONNECTING SAID PUMP IN A BLOOD CONDUCTING PASAGE OF THE CIRCULATORY SYSTEM OF A LIVING BODY, ACTUATING MEANS FOR SAID PUMP, MEANS FOR PRODUCING A SIGNAL INDICATIVE OF THE ACTUAL BLOOD PRESSURE IN SAID SYSTEM, MEANS FOR PRODUCING A REFERENCE SIGNAL INDICATIVE OF DESIRED BLOOD PRESSURE MEANS FOR COMPARING SAID ACTUAL BLOOD PRESSURE SIGNAL WITH SAID REFERENCE SIGNAL TO PRODUCE AN ERROR SIGNAL PROPORTIONAL TO THE DIFFERENCE BETWEEN SAID DESIRED BLOOD PRESSURE AND SAID ACTUAL BLOOD PRESSURE, MEANS CONDUCTING SAID ERROR SIGNAL TO SAID PUMP ACTUATING MEANS TO VARY THE RATE OF SAID PUMP AND ELIMINATE SAID ERROR SIGNAL, AND MEANS FOR VARYING SAID REFERENCE SIGNAL IN RESPONSE TO CHANGES IN HE RESPIRATION RATE OF SAID BODY.
Claim 2
Dependent Claim
140 words
APPARATUS FOR DELIVERING BLOOD TO AT LEAST A PORTION OF THE CIRCULATORY SYSTEM OF A LIVING BODY COMPRISING AN ELECTROMAGNETIC PUMP, MEANS FOR CONNECTING SAID PUMP IN A BLOOD CONDUCTING PASAGE OF THE CIRCULATORY SYSTEM OF A LIVING BODY, ACTUATING MEANS FOR SAID PUMP, MEANS FOR PRODUCING A SIGNAL INDICATIVE OF THE ACTUAL BLOOD PRESSURE IN SAID SYSTEM, MEANS FOR PRODUCING A REFERENCE SIGNAL INDICATIVE OF DESIRED BLOOD PRESSURE MEANS FOR COMPARING SAID ACTUAL BLOOD PRESSURE SIGNAL WITH SAID REFERENCE SIGNAL TO PRODUCE AN ERROR SIGNAL PROPORTIONAL TO THE DIFFERENCE BETWEEN SAID DESIRED BLOOD PRESSURE AND SAID ACTUAL BLOOD PRESSURE, MEANS CONDUCTING SAID ERROR SIGNAL TO SAID PUMP ACTUATING MEANS TO VARY THE RATE OF SAID PUMP AND ELIMINATE SAID ERROR SIGNAL, AND MEANS FOR VARYING SAID REFERENCE SIGNAL IN RESPONSE TO CHANGES IN HE RESPIRATION RATE OF SAID BODY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |