US6077218A
Expired / Lapsed
US
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Cardiac reinforcement device
Assignee: Mardil Inc
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Filing: 1997-09-23
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Granted: 2000-06-20
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Expires: 2017-09-23
Abstract
Abstract The present disclosure is directed to a cardiac reinforcement device (CRD) and method for the treatment of cardiomyopathy. The CRD provides for reinforcement of the walls of the heart by constraining cardiac expansion, beyond a predetermined limit, during diastolic expansion of the heart. A CRD of the invention can be applied to the epicardium of the heart to locally constrain expansion of the cardiac wall or to circumferentially constrain the cardiac wall during cardiac expansion.
Inventors
- 👤 Clifton A. Alferness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:25
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2478; A61F2/2481; A61M; A61M60/00; A61M60/10; A61M60/122; A61M60/126; A61M60/161; A61M60/20; A61M60/247; A61M60/253; A61M60/268; A61M60/40; A61M60/465; A61M60/47; A61F2002/2484; A61F2250/00; A61F2250/0003
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
91 words
A cardiac reinforcement device, said device comprising: (a) a cone-shaped biomedical material having an apical end and a based end and which generally conforms to the external geometry of a patient's heart; (b) said cone-shaped biomedical material comprising a plurality of open cells, each open cell defined by multiple sides, each open cell sharing at least one of said multiple sides with an adjacent open cell; (c) said cone-shaped biomedical material having a predetermined size selected to surround the surface of the heart and constrain cardiac expansion beyond a predetermined limit.
Claim 2
Dependent Claim
91 words
A cardiac reinforcement device, said device comprising: (a) a cone-shaped biomedical material having an apical end and a based end and which generally conforms to the external geometry of a patient's heart; (b) said cone-shaped biomedical material comprising a plurality of open cells, each open cell defined by multiple sides, each open cell sharing at least one of said multiple sides with an adjacent open cell; (c) said cone-shaped biomedical material having a predetermined size selected to surround the surface of the heart and constrain cardiac expansion beyond a predetermined limit.
Claim 3
Dependent Claim
16 words
The cardiac reinforcement device according to claim 1 wherein said cone-shaped biomedical material is substantially non-elastic.
Claim 4
Dependent Claim
33 words
The cardiac reinforcement device according to claim 1 wherein said cone-shapcd biomedical material has a lateral slot providing for selective adjustment of a circumference of said cone-shaped biomedical material to said predetermined size.
Claim 5
Dependent Claim
37 words
The cardiac reinforcement device of claim 3 further comprising an inflatable member sized for selectively adjusting said predetermined size of said cone-shaped biomedical material, said inflatable member sized for positioning between said device and said patient's heart.
Claim 6
Dependent Claim
17 words
The cardiac reinforcement device according to claim 1 wherein said apical end of said device is open.
Claim 7
Dependent Claim
16 words
The cardiac reinforcement device according to clam 1 wherein said biomedical material is a polyester mesh.
Claim 8
Dependent Claim
16 words
The cardiac reinforcement device according to clam 1 wherein said biomedical material is a polyester mesh.
Claim 9
Dependent Claim
29 words
The cardiac reinforcement device according to claim 1 wherein said base end of said cone-shaped biomedical material includes a securing arrangement for securing said device to said patient's heart.
Claim 10
Dependent Claim
111 words
A cardiac reinforcement device for constraining cardiac size during diastole, said device comprising: (a) a substantially non-elastic biomedical material for contacting an epicardial surface of a patient's heart and configured to circumferentially surround said epicardial surface of said patient's heart; (b) said configured biomedical material having a base end and an apical end and formed into a jacket to surround the heart with the jacket having an internal volume to receive said heart; (c) said non-elastic biomedical material comprising a continuous mesh construction, said continuous mesh construction defining a plurality of open cells; and (d) said configured biomedical material providing cardiac constraint during diastole without substantially assisting cardiac contraction during systole.
Claim 11
Dependent Claim
111 words
A cardiac reinforcement device for constraining cardiac size during diastole, said device comprising: (a) a substantially non-elastic biomedical material for contacting an epicardial surface of a patient's heart and configured to circumferentially surround said epicardial surface of said patient's heart; (b) said configured biomedical material having a base end and an apical end and formed into a jacket to surround the heart with the jacket having an internal volume to receive said heart; (c) said non-elastic biomedical material comprising a continuous mesh construction, said continuous mesh construction defining a plurality of open cells; and (d) said configured biomedical material providing cardiac constraint during diastole without substantially assisting cardiac contraction during systole.
Claim 12
Dependent Claim
32 words
The cardiac reinforcement device according to claim 8 wherein said configured biomedical material has a lateral slot for providing selective adjustment of a circumference of said biomedical material to a predetermined size.
Claim 13
Dependent Claim
34 words
The cardiac reinforcement device according to claim 9 wherein said slot has opposing lateral edges which decrease said predetermined size of said circumference of said biomedical material by moving said opposing lateral edges together.
Claim 14
Dependent Claim
17 words
The cardiac reinforcement device according to claim 8 wherein said apical end of said device is open.
Claim 15
Dependent Claim
16 words
The cardiac reinforcement device according to claim 3 whercin said biomedical material is a polyester mesh.
Claim 16
Dependent Claim
38 words
The cardiac reinforcement device according to claim 8 further comprising an inflatable member sized for selectively adjusting said predetermined size of said biomedical material, said inflatable member sized for positioning between said biomedical material and said patient's heart.
Claim 17
Dependent Claim
88 words
A cardiac reinforcement device for treating a cardiac condition, said dcvice comprising: (a) a synthetic biomedical material having interconnected sides with a predetermined maximum spacing between said sides which can be disposed on diametrically opposed surfaces of a heart; (b) said synthetic biomedical material comprising a continuous mesh construction, said continuous mesh construction defining a plurality of open cells; (c) said biomedical material having a base end and an apical end; and (d) said biomedical material providing cardiac constraint during diastole without substantially assisting cardiac contraction during systole.
Claim 18
Dependent Claim
88 words
A cardiac reinforcement device for treating a cardiac condition, said dcvice comprising: (a) a synthetic biomedical material having interconnected sides with a predetermined maximum spacing between said sides which can be disposed on diametrically opposed surfaces of a heart; (b) said synthetic biomedical material comprising a continuous mesh construction, said continuous mesh construction defining a plurality of open cells; (c) said biomedical material having a base end and an apical end; and (d) said biomedical material providing cardiac constraint during diastole without substantially assisting cardiac contraction during systole.
Claim 19
Dependent Claim
16 words
The cardiac reinforcement device according to claim 14 wherein the biomedical material circumferentially surrounds the heart.
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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) | 2003-06-20 | 2003-12-20 | 2004-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-20 | 2007-12-20 | 2008-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-20 | 2011-12-20 | 2012-06-20 | $7700.00 | Window Closed / Lapsed |