US4861330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiac assist device and method
Assignee: Individual
•
Filing: 1987-03-12
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Granted: 1989-08-29
•
Expires: 2007-03-12
Abstract
Abstract A device and method for assisting the pumping action of a failed heart. The device comprises an inelastic balloon, preferably conical in shape, connected to a catheter and pump. The balloon is percutaneously fed into a major blood vessel and then guided to a ventricle of the heart. When placed in the left ventricle, the balloon inflates during the isovolumetric contraction period before the aortic valve opens, and deflates after the aortic valve is closed but before the mitral valve has opened.
Inventors
- 👤 Gene Voss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:21
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; A61M60/861; A61M60/865; A61M60/867; A61M2205/00; A61M2205/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
A method of assisting the pumping action of a heart, comprising the steps of: inserting a balloon member into the femoral vein, said balloon member joined in fluid communication to a catheter member; guiding said balloon member and said catheter member within said femoral vein toward said heart, into the inferior vena cava and the right atrium; pushing said balloon member past the foramen ovale into the left atrium and past the mitral valve into the left ventricle of said heart; and activating pump means connected to said catheter member whereby said balloon member is inflated during each contraction of said ventricle, and deflated shortly thereafter.
Claim 2
Independent Claim
106 words
A method of assisting the pumping action of a heart, comprising the steps of: inserting a balloon member into the femoral vein, said balloon member joined in fluid communication to a catheter member; guiding said balloon member and said catheter member within said femoral vein toward said heart, into the inferior vena cava and the right atrium; pushing said balloon member past the foramen ovale into the left atrium and past the mitral valve into the left ventricle of said heart; and activating pump means connected to said catheter member whereby said balloon member is inflated during each contraction of said ventricle, and deflated shortly thereafter.
Claim 3
Dependent Claim
22 words
The method of claim 1 further comprising the step of placing said balloon member at the apical dimple of said left ventricle.
Claim 4
Dependent Claim
33 words
The method of claim 2 further comprising the step of securing said balloon member to the inner wall of said left ventricle by needle means attached to a tip of said balloon member.
Claim 5
Dependent Claim
23 words
The method of claim 3 further comprising the step of injecting a radiopaque dye into said ventricle before pushing said balloon member therein.
Claim 6
Dependent Claim
33 words
The method of claim 1 further comprising the step of securing said balloon member to the inner wall of said left ventricle by needle means attached to a tip of said balloon member.
Claim 7
Dependent Claim
23 words
The method of claim 1 further comprising the step of injecting a radiopaque dye into said ventricle before pushing said balloon member therein.
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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) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |