US3156237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring blood pressure and heartbeat pulses
Assignee: Physio Control Inc
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Filing: 1963-03-08
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Granted: 1964-11-10
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Expires: 1983-03-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Karl W Edmark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:55
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/0235
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A BLOOD PRESSURE AND HEARTBEAT PULSE MEASURING APPARATUS, AN EXTREMITY-RECEIVING PNEUMATIC COMPRESSOR PROVIDED ON ITS INTERIOR SURFACE WITH SPACED ELECTRODES LOCATED TO MAKE ELECTRICAL CONTACT WITH TWO SPACED POINTS ON AN EXTREMITY RECEIVED WITHIN THE COMPRESSOR, MEANS TO SUPPLY FLUID UNDER PRESSURE TO SAID COMPRESSOR, PRESSURE-INDICATING MEANS CONNECTED TO SAID COMPRESSOR, IMPEDANCE-RESPONSIVE MEANS ELECTRICALLY CONNECTED TO SAID ELECTRODES SO THAT THE IMPEDANCE DEFINED BY THE PORTION OF THE EXTREMITY BETWEEN SAID TWO SPACED POINTS WILL BE ELECTRICALLY CONNECTED TO SAID IMPEDANCE-RESPONSIVE MEANS, SAID IMPEDANCE VARYING WITH THE FLOW OF BLOOD THROUGH SAID PORTION, AND MEANS VARYING THE FLUID PRESSURE IN SAID COMPRESSOR IN ACCORDANCE WITH THE RESPONSE OF SAID IMPEDANCE-RESPONSIVE MEANS.
Claim 2
Dependent Claim
112 words
IN A BLOOD PRESSURE AND HEARTBEAT PULSE MEASURING APPARATUS, AN EXTREMITY-RECEIVING PNEUMATIC COMPRESSOR PROVIDED ON ITS INTERIOR SURFACE WITH SPACED ELECTRODES LOCATED TO MAKE ELECTRICAL CONTACT WITH TWO SPACED POINTS ON AN EXTREMITY RECEIVED WITHIN THE COMPRESSOR, MEANS TO SUPPLY FLUID UNDER PRESSURE TO SAID COMPRESSOR, PRESSURE-INDICATING MEANS CONNECTED TO SAID COMPRESSOR, IMPEDANCE-RESPONSIVE MEANS ELECTRICALLY CONNECTED TO SAID ELECTRODES SO THAT THE IMPEDANCE DEFINED BY THE PORTION OF THE EXTREMITY BETWEEN SAID TWO SPACED POINTS WILL BE ELECTRICALLY CONNECTED TO SAID IMPEDANCE-RESPONSIVE MEANS, SAID IMPEDANCE VARYING WITH THE FLOW OF BLOOD THROUGH SAID PORTION, AND MEANS VARYING THE FLUID PRESSURE IN SAID COMPRESSOR IN ACCORDANCE WITH THE RESPONSE OF SAID IMPEDANCE-RESPONSIVE MEANS.
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) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |