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US3692018A
Expired / Lapsed
US
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Cardiac assistance device
Assignee: Individual
•
Filing: 1970-02-11
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Granted: 1972-09-19
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Expires: 1990-02-11
Abstract
Abstract A cardiac assistance device is disclosed which produces a unidirectional pumping action assisting the heart when the device is activated after it has been introduced into a blood vessel by conventional surgical procedures.
Inventors
- 👤 Robert H Goetz
- 👤 Lionel J Goetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:10
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/80; A61M60/855; A61M60/89; A61M60/894; A61M60/10; A61M60/122; A61M60/126; A61M60/135; A61M60/139; A61M60/20; A61M60/295; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1052; A61M60/802; A61M60/833; A61M60/857
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
139 words
A cardiac assistance device comprising: a. a pump structure adapted to be inserted into a blood vessel of a patient, said blood structure having an elongated support means with an insertable end; 1. expansion means on said support means for occluding the blood vessel; 2. blood moving means positioned on one side of the expansion means on said support means adjacent said insertable end for displacing blood within the vessel on said one side; 3. means for sequentially activating the expansion means and blood moving means in that order to produce a uni-directional flow of blood within the blood vessel away from the point of occlusion and toward the heart, and b. means for alternately activating and deactivating the expansion means and to produce moving means on a cycle out of phase with the pumping action of the heart.
Claim 2
Dependent Claim
139 words
A cardiac assistance device comprising: a. a pump structure adapted to be inserted into a blood vessel of a patient, said blood structure having an elongated support means with an insertable end; 1. expansion means on said support means for occluding the blood vessel; 2. blood moving means positioned on one side of the expansion means on said support means adjacent said insertable end for displacing blood within the vessel on said one side; 3. means for sequentially activating the expansion means and blood moving means in that order to produce a uni-directional flow of blood within the blood vessel away from the point of occlusion and toward the heart, and b. means for alternately activating and deactivating the expansion means and to produce moving means on a cycle out of phase with the pumping action of the heart.
Claim 3
Dependent Claim
29 words
blood moving means positioned on one side of the expansion means on said support means adjacent said insertable end for displacing blood within the vessel on said one side;
Claim 4
Dependent Claim
29 words
blood moving means positioned on one side of the expansion means on said support means adjacent said insertable end for displacing blood within the vessel on said one side;
Claim 5
Dependent Claim
36 words
The cardiac assistance device according to claim 1 wherein: a. the expansion means comprises an inflatable occluding chamber; and b. the blood moving means comprises at least one inflatable pumping chamber communicating with the occluding chamber.
Claim 6
Dependent Claim
25 words
holding means attached to the balloon member for maintaining the relative position of the occluding chamber and pumping as they are introduced into the patient.
Claim 7
Dependent Claim
25 words
holding means attached to the balloon member for maintaining the relative position of the occluding chamber and pumping as they are introduced into the patient.
Claim 8
Dependent Claim
23 words
The cardiac assistance device according to claim 2 wherein: a. the occluding chamber and Pumping chamber are defined by a balloon structure comprising:
Claim 9
Dependent Claim
64 words
means for sequentially activating the expansion means and blood moving means in that order to produce a uni-directional flow of blood within the blood vessel away from the point of occlusion and toward the heart, and b. means for alternately activating and deactivating the expansion means and to produce moving means on a cycle out of phase with the pumping action of the heart.
Claim 10
Dependent Claim
64 words
means for sequentially activating the expansion means and blood moving means in that order to produce a uni-directional flow of blood within the blood vessel away from the point of occlusion and toward the heart, and b. means for alternately activating and deactivating the expansion means and to produce moving means on a cycle out of phase with the pumping action of the heart.
Claim 11
Dependent Claim
117 words
The cardiac assistance device according to claim 3 wherein: a. the holding means comprises a tubular conduit extending through the balloon member, said balloon member being held in sealed relationship about said conduit at each end thereof and at said intermediate point along its length; and b. the means for activating the occluding and pumping chambers comprises a pneumatic power source operatively connected to the tubular conduit for alternately pressurizing and depressurizing the balloon member to inflate and deflate it respectively; and c. the portion of the tubular conduit extending through the balloon member has a series of perforations permitting flow of air into and out of the balloon member during the inflation and deflation phases respectively.
Claim 12
Dependent Claim
44 words
The cardiac assistance device according to claim 4 wherein: a. the means for sequentially inflating the occluding and pumping chambers comprises means for temporarily diverting the flow of air through the tubular conduit into the occluding chamber prior to entrance into the pumping chamber.
Claim 13
Dependent Claim
51 words
The cardiac assistance device according to claim 5 wherein: a. the means for diverting the flow of air through the tubular conduit comprises an obstruction member disposed within the portion of the tubular conduit extending through the occluding chamber at a point located between two adjacent perforations of said conduit portion.
Claim 14
Dependent Claim
73 words
The cardiac assistance device according to claim 5 wherein: a. the means for diverting the flow of air through the tubular conduit comprises a one-way valve disposed within the portion of the tubular conduit extending through the occluding chamber at a point located between two adjacent perforations of said conduit portion, said valve precluding the flow of air therethrough during the inflation phase and permitting flow of air therethrough during the deflation phase.
Claim 15
Dependent Claim
28 words
The cardiac assistance device according to claim 5 wherein: a. the occluding chamber is substantially spherical in shape; and b. the pumping chamber is substantially cylindrical in shape.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |