Patent US4855026A successfully refreshed from Google Patents.
US3720199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety connector for balloon pump
Assignee: KONTROL CARDIOVASCULAR Inc
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Filing: 1971-05-14
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Granted: 1973-03-13
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Expires: 1991-05-14
Abstract
Abstract An intra aortic balloon catheter assembly for use in a circulatory assist system which includes a special connector for joining a balloon implanted in the patient to a control console which may house both pneumatic and electronic controls. The connector is adapted to provide a signal which indicates volumetric displacement of the balloon. This volume is compared to the volume of load gas utilized and shuts the system down if an over-inflation condition exists, prevents overinflation of the balloon, inadvertent use of an incorrectly sized balloon, and allows presterilization of the whole assembly.
Inventors
- 👤 M Rishton
- 👤 A Federico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:36
CPC Classifications
F; F04; F04B; F04B45/00; F04B45/02; F04B45/033; A; A61; A61M; A61M60/00; A61M60/10; A61M60/122; A61M60/126; A61M60/135; A61M60/139; A61M60/20; A61M60/295; A61M60/40; A61M60/497; A61M60/50; A61M60/508; A61M60/515; A61M60/538; A61M60/80; A61M60/855; A61M60/871; A61M60/878; A61M2205/00; A61M2205/60; A61M2205/6018; A61M2205/6027; A61M60/247; A61M60/253; A61M60/268; A61M60/274
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
207 words
In a circulatory assist system having pneumatic means including pneumatic pump means adapted to sequentially apply pressure to a load gas to inflate and deflate a balloon placed in an artery of a patient, means for providing a first output signal proportional to the volumetric displacement of said pneumatic pump means, and electronic timing means for controlling said pneumatic means by sequencing said inflation and deflation to the said patient''s heart rhythm, the improvement comprising: a. a catheter; b. a balloon coupled to one end of said catheter, said balloon being adapted to be placed in an artery; c. first means for providing a second output signal proportional to the volumetric displacement of said balloon, said first means comprising a connector for removeably coupling said catheter to said pneumatic pump means, said connector comprising first and second separable portions, said first portion being fixedly attached to the end of said catheter remote from said balloon, and impedance means carried by said first portion; d. comparator means for receiving said first and second output signals and generating a third output signal when said first output signal is greater than said second output signal; and e. venting means actuated by said third output signal for deactivating said pneumatic means.
Claim 2
Dependent Claim
207 words
In a circulatory assist system having pneumatic means including pneumatic pump means adapted to sequentially apply pressure to a load gas to inflate and deflate a balloon placed in an artery of a patient, means for providing a first output signal proportional to the volumetric displacement of said pneumatic pump means, and electronic timing means for controlling said pneumatic means by sequencing said inflation and deflation to the said patient''s heart rhythm, the improvement comprising: a. a catheter; b. a balloon coupled to one end of said catheter, said balloon being adapted to be placed in an artery; c. first means for providing a second output signal proportional to the volumetric displacement of said balloon, said first means comprising a connector for removeably coupling said catheter to said pneumatic pump means, said connector comprising first and second separable portions, said first portion being fixedly attached to the end of said catheter remote from said balloon, and impedance means carried by said first portion; d. comparator means for receiving said first and second output signals and generating a third output signal when said first output signal is greater than said second output signal; and e. venting means actuated by said third output signal for deactivating said pneumatic means.
Claim 3
Dependent Claim
207 words
In a circulatory assist system having pneumatic means including pneumatic pump means adapted to sequentially apply pressure to a load gas to inflate and deflate a balloon placed in an artery of a patient, means for providing a first output signal proportional to the volumetric displacement of said pneumatic pump means, and electronic timing means for controlling said pneumatic means by sequencing said inflation and deflation to the said patient''s heart rhythm, the improvement comprising: a. a catheter; b. a balloon coupled to one end of said catheter, said balloon being adapted to be placed in an artery; c. first means for providing a second output signal proportional to the volumetric displacement of said balloon, said first means comprising a connector for removeably coupling said catheter to said pneumatic pump means, said connector comprising first and second separable portions, said first portion being fixedly attached to the end of said catheter remote from said balloon, and impedance means carried by said first portion; d. comparator means for receiving said first and second output signals and generating a third output signal when said first output signal is greater than said second output signal; and e. venting means actuated by said third output signal for deactivating said pneumatic means.
Claim 4
Dependent Claim
207 words
In a circulatory assist system having pneumatic means including pneumatic pump means adapted to sequentially apply pressure to a load gas to inflate and deflate a balloon placed in an artery of a patient, means for providing a first output signal proportional to the volumetric displacement of said pneumatic pump means, and electronic timing means for controlling said pneumatic means by sequencing said inflation and deflation to the said patient''s heart rhythm, the improvement comprising: a. a catheter; b. a balloon coupled to one end of said catheter, said balloon being adapted to be placed in an artery; c. first means for providing a second output signal proportional to the volumetric displacement of said balloon, said first means comprising a connector for removeably coupling said catheter to said pneumatic pump means, said connector comprising first and second separable portions, said first portion being fixedly attached to the end of said catheter remote from said balloon, and impedance means carried by said first portion; d. comparator means for receiving said first and second output signals and generating a third output signal when said first output signal is greater than said second output signal; and e. venting means actuated by said third output signal for deactivating said pneumatic means.
Claim 5
Dependent Claim
41 words
The device of claim 1 wherein said first portion includes terminal means for electrically connectIng said impedance means in circuit with said comparator means, said first portion including further means for coupling said load gas to said balloon via said catheter.
Claim 6
Dependent Claim
29 words
The device of claim 2 additionally including tube means connected between said second portion and said pneumatic pump means whereby said load gas may inflate and deflate said balloon.
Claim 7
Dependent Claim
18 words
The device of claim 3 additionally including insets disposed in said second portion for receiving said terminal means.
Claim 8
Dependent Claim
23 words
The device of claim 4 additionally including conductors electrically coupled to said insets for providing electrical connection between said insets and said comparator.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |