US3707960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balloon cardiac assisting pump having intraaortic electrocardiographic electrodes
Assignee: United States Department of Health and Human Services
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Filing: 1970-09-03
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Granted: 1973-01-02
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Expires: 1990-09-03
Abstract
Abstract An intra-arterial cardiac assisting pump is provided with intraaortic electrocardiographic electrodes to improve the signal-to-noise ratio of the electrocardiogram and the reliability of trigger signal for phase-shift pumping.
Inventors
- 👤 P Freed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6846; A61B5/6847; A61B5/6852; A61B5/6853; A61B5/24; A61B5/25; A61B5/279; A61B5/28; A61B5/283; A61M; A61M60/00; A61M60/20; A61M60/295; A61M60/50; A61M60/508; A61M60/515; A61M60/80; A61M60/855; A61M60/857; A61M2205/00; A61M2205/33; A61M2205/3303; A61M60/10; A61M60/122; A61M60/126; A61M60/135
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
156 words
In an intra-arterial cardiac assisting pump comprising: a hollow elongated arterial catheter having an outer diameter sufficiently small to permit insertion thereof into an artery, and having a perforated portion; a thin-walled cylindrical, inflatable balloon surrounding the perforated portion of said catheter and in gas-sealing relationship therewith; and pumping means for periodically feeding gas to said balloon through said catheter in response to an electrocardiographic signal, the improvement comprising means connected to said pumping means for simultaneously controlling balloon pumping and obtaining an electrocardiographic signal, comprising a pair of intracorporeal electrodes along the outer surface of said intraarterial pump in the vicinity of said balloon, and an electrical lead extending from each said electrode along the length of said catheter, wherein one said intracorporeal electrode is located at the leading end of said catheter adjacent the leading end of said balloon, and the other said intracorporeal electrode is located at the caudal end of said balloon.
Claim 2
Dependent Claim
156 words
In an intra-arterial cardiac assisting pump comprising: a hollow elongated arterial catheter having an outer diameter sufficiently small to permit insertion thereof into an artery, and having a perforated portion; a thin-walled cylindrical, inflatable balloon surrounding the perforated portion of said catheter and in gas-sealing relationship therewith; and pumping means for periodically feeding gas to said balloon through said catheter in response to an electrocardiographic signal, the improvement comprising means connected to said pumping means for simultaneously controlling balloon pumping and obtaining an electrocardiographic signal, comprising a pair of intracorporeal electrodes along the outer surface of said intraarterial pump in the vicinity of said balloon, and an electrical lead extending from each said electrode along the length of said catheter, wherein one said intracorporeal electrode is located at the leading end of said catheter adjacent the leading end of said balloon, and the other said intracorporeal electrode is located at the caudal end of said balloon.
Claim 3
Dependent Claim
29 words
A device in accordance with claim 1 wherein said arterial catheter is formed of a flexible mesh-material and wherein said leads from said electrodes are woven in said mesh.
Claim 4
Dependent Claim
21 words
A device in accordance with claim 2 wherein said electrodes consist essentially of a plastic material filled with electrically conductive particles.
Claim 5
Dependent Claim
16 words
A device in accordance with claim 3 wherein said electrically conductive particles consist of carbon black.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |