US4185617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically driven cardiac-assist pump system
Assignee: Individual
•
Filing: 1978-04-27
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Granted: 1980-01-29
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Expires: 1998-04-27
Abstract
Abstract A magnetically driven pump system designed for use with a body-implantable heart-assist device. The system includes a body-implantable bellows-type pump adapted to transfer fluid to and from the heart-assist device, and a driving unit effective to drive the pump by magnetic coupling across the surface of the body.
Inventors
- 👤 Thomas B. Hutchins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:14
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/10; A61M60/122; A61M60/126; A61M60/148; A61M60/135; A61M60/139; A61M60/20; A61M60/295; A61M60/40; A61M60/497; A61M60/80; A61M60/855; A61M60/871; A61M60/873
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
131 words
A magnetically driven cardiac-assist pump system comprising means defining a changeable-volume pumping chamber including a movable wall portion, movements of which effect changes in the volume of said chamber, magnetic driven means drivingly connected to said wall portion for moving the same upon actuation of said driven means, and magnetic driving means magnetically couplable with said driven means for actuating the same, said driven and driving means comprising rotary members having opposable faces with each carrying means defining an array of magnetic poles, each of said arrays including a central subarray located near the center of rotation of the associated rotary member, and a peripheral subarray located outwardly of said central subarray. said central and peripheral subarrays, with said rotary member's faces opposing one another, exhibiting magnetic repulsion and attraction, respectively.
Claim 2
Dependent Claim
131 words
A magnetically driven cardiac-assist pump system comprising means defining a changeable-volume pumping chamber including a movable wall portion, movements of which effect changes in the volume of said chamber, magnetic driven means drivingly connected to said wall portion for moving the same upon actuation of said driven means, and magnetic driving means magnetically couplable with said driven means for actuating the same, said driven and driving means comprising rotary members having opposable faces with each carrying means defining an array of magnetic poles, each of said arrays including a central subarray located near the center of rotation of the associated rotary member, and a peripheral subarray located outwardly of said central subarray. said central and peripheral subarrays, with said rotary member's faces opposing one another, exhibiting magnetic repulsion and attraction, respectively.
Claim 3
Dependent Claim
108 words
A magnetically driven cardiac-assist pump system comprising means defining a changeable-volume pumping chamber including a movable wall portion, movements of which effect changes in the volume of said chamber, magnetic driven means drivingly connected to said wall portion for moving the same upon actuation of said driven means, and magnetic driving means magnetically couplable with said driven means for actuating the same, said driven and driving means each comprising a pair of spaced counterrotative members, with said members in said driven means having faces opposable with faces in said members in said driving means, and with each of said faces carrying means defining an array of magnetic poles.
Claim 4
Dependent Claim
108 words
A magnetically driven cardiac-assist pump system comprising means defining a changeable-volume pumping chamber including a movable wall portion, movements of which effect changes in the volume of said chamber, magnetic driven means drivingly connected to said wall portion for moving the same upon actuation of said driven means, and magnetic driving means magnetically couplable with said driven means for actuating the same, said driven and driving means each comprising a pair of spaced counterrotative members, with said members in said driven means having faces opposable with faces in said members in said driving means, and with each of said faces carrying means defining an array of magnetic poles.
Claim 5
Dependent Claim
153 words
A magnetically driven cardiac-assist pump system comprising means defining a changeable-volume pumping chamber including a movable wall portion, movements of which effect changes in the volume of said chamber, magnetic driven means drivingly connected to said wall portion for moving the same upon actuation of said driven means, and magnetic driving means magnetically couplable with said driven means for actuating the same, said driven and driving means each comprising a pair of spaced counterrotative members, with said members in said driven means having faces opposable with faces in said members in said driving means, each face carrying means defining an array of magnetic poles, each of said arrays including a central subarray located near the center of rotation of the associated member, and a peripheral subarray located outwardly of said central subarray, each of said central and peripheral subarrays, with said rotary members' faces opposing one another, exhibiting magnetic repulsion and attraction, respectively.
Claim 6
Dependent Claim
153 words
A magnetically driven cardiac-assist pump system comprising means defining a changeable-volume pumping chamber including a movable wall portion, movements of which effect changes in the volume of said chamber, magnetic driven means drivingly connected to said wall portion for moving the same upon actuation of said driven means, and magnetic driving means magnetically couplable with said driven means for actuating the same, said driven and driving means each comprising a pair of spaced counterrotative members, with said members in said driven means having faces opposable with faces in said members in said driving means, each face carrying means defining an array of magnetic poles, each of said arrays including a central subarray located near the center of rotation of the associated member, and a peripheral subarray located outwardly of said central subarray, each of said central and peripheral subarrays, with said rotary members' faces opposing one another, exhibiting magnetic repulsion and attraction, respectively.
Claim 7
Dependent Claim
129 words
A magnetically driven cardiac-assist pump system comprising means defining a changeable-volume pumping chamber including a movable wall portion, movements of which effect changes in the volume of said chamber, magnetic driven means drivingly connected to said wall portion for moving the same upon actuation of said driven means, and magnetic driving means magnetically couplable with said driven means for actuating the same, said driven and driving means each comprising a pair of spaced counterrotative members, with said members in said driving means having faces opposable with faces in said members in said driving means, each face carrying means defining an array of magnetic poles, wherein each of said pairs of spaced counterrotative members includes mutually intermeshing gears which counterrotatively couple one member of such pair to the other member.
Claim 8
Dependent Claim
129 words
A magnetically driven cardiac-assist pump system comprising means defining a changeable-volume pumping chamber including a movable wall portion, movements of which effect changes in the volume of said chamber, magnetic driven means drivingly connected to said wall portion for moving the same upon actuation of said driven means, and magnetic driving means magnetically couplable with said driven means for actuating the same, said driven and driving means each comprising a pair of spaced counterrotative members, with said members in said driving means having faces opposable with faces in said members in said driving means, each face carrying means defining an array of magnetic poles, wherein each of said pairs of spaced counterrotative members includes mutually intermeshing gears which counterrotatively couple one member of such pair to the other member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-28 | 1983-07-30 | 1984-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-28 | 1987-07-30 | 1988-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-28 | 1991-07-30 | 1992-01-29 | $7700.00 | Window Closed / Lapsed |