Patent US6375608B1 successfully refreshed from Google Patents.
US6375608B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiac reinforcement device
Assignee: Mardil Inc
•
Filing: 2000-10-25
•
Granted: 2002-04-23
•
Expires: 2020-10-25
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 18:58
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: 21
Claim 1
Independent Claim
78 words
A passive cardiac reinforcement device for constraining outward expansion of a heart wall of a patient's heart during diastole, said device comprising: (a) a jacket constructed from a biomedical material, said jacket having an apical end and a base end and a predetermined size selected to surround an external surface of said heart and constrain cardiac expansion during diastole beyond a predetermined limit without substantially assisting cardiac contraction during systole; and (b) a marker for evaluating cardiac performance.
Claim 2
Dependent Claim
78 words
A passive cardiac reinforcement device for constraining outward expansion of a heart wall of a patient's heart during diastole, said device comprising: (a) a jacket constructed from a biomedical material, said jacket having an apical end and a base end and a predetermined size selected to surround an external surface of said heart and constrain cardiac expansion during diastole beyond a predetermined limit without substantially assisting cardiac contraction during systole; and (b) a marker for evaluating cardiac performance.
Claim 3
Dependent Claim
19 words
The cardiac reinforcement device according to claim 1 wherein said marker for evaluating cardiac performance comprises a radiopaque marker.
Claim 4
Dependent Claim
27 words
The cardiac reinforcement device according to claim 2 wherein said radiopaque marker is selected from the group consisting of platinum wire, titanium wire and stainless steel wire.
Claim 5
Dependent Claim
19 words
The cardiac reinforcement device according to claim 1 wherein said marker for evaluating cardiac performance comprises a radioluscent marker.
Claim 6
Dependent Claim
41 words
The cardiac reinforcement device according to claim 1 wherein said biomedical material comprises 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.
Claim 7
Dependent Claim
17 words
The cardiac reinforcement device according to claim 1 wherein said apical end of said device is open.
Claim 8
Dependent Claim
16 words
The cardiac reinforcement device according to claim 1 wherein said biomedical material is a polyester mesh.
Claim 9
Dependent Claim
14 words
The cardiac reinforcement device according to claim 1 wherein said biomedical material is elastic.
Claim 10
Dependent Claim
15 words
The cardiac reinforcement device according to claim 1 wherein said biomedical material is substantially non-elastic.
Claim 11
Dependent Claim
27 words
The cardiac reinforcement device according to claim 1 wherein said biomedical material comprises a continuous mesh construction, said continuous mesh construction defining a plurality of open cells.
Claim 12
Dependent Claim
30 words
The cardiac reinforcement device according to claim 1 wherein said jacket further comprises a lateral slot for providing selective adjustment of a circumference of said jacket to a predetermined size.
Claim 13
Dependent Claim
34 words
The cardiac reinforcement device according to claim 11 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
18 words
The cardiac reinforcement device according to claim 11 wherein the radiopaque marker is included proximate the lateral slot.
Claim 15
Dependent Claim
40 words
The cardiac reinforcement device of claim 1 further comprising an inflatable member sized for selectively adjusting said predetermined size of said biomedical material, said inflatable member sized for positioning between said device and said patient's heart and an inflation port.
Claim 16
Dependent Claim
17 words
The cardiac reinforcement device of claim 14 wherein the radiopaque marker is included proximate the inflation port.
Claim 17
Independent Claim
108 words
A method for monitoring cardiac performance of a heart, said method comprising: (a) selecting a passive cardiac reinforcement device, said cardiac reinforcement device comprising: (i) a jacket constructed from a biomedical material, said jacket having an apical end and a base end and a predetermined size selected to surround an external surface of said heart and constrain cardiac expansion during diastole beyond a predetermined limit without substantially assisting cardiac contraction during systole; and (ii) at least one radiopaque or radioluscent marker; and (b) applying said cardiac reinforcement device to said heart; (c) securing said cardiac reinforcement device to said heart; and (d) determining the position of the marker.
Claim 18
Independent Claim
108 words
A method for monitoring cardiac performance of a heart, said method comprising: (a) selecting a passive cardiac reinforcement device, said cardiac reinforcement device comprising: (i) a jacket constructed from a biomedical material, said jacket having an apical end and a base end and a predetermined size selected to surround an external surface of said heart and constrain cardiac expansion during diastole beyond a predetermined limit without substantially assisting cardiac contraction during systole; and (ii) at least one radiopaque or radioluscent marker; and (b) applying said cardiac reinforcement device to said heart; (c) securing said cardiac reinforcement device to said heart; and (d) determining the position of the marker.
Claim 19
Dependent Claim
27 words
The method according to claim 16 wherein said step of determining the position of the marker comprises viewing the cardiac reinforcement device with an x-ray or fluoroscope.
Claim 20
Dependent Claim
16 words
The method according to claim 16 wherein the cardiac reinforcement device comprises more than one marker.
Claim 21
Dependent Claim
27 words
The method according to claim 18 wherein said step of determining the position of the marker comprises evaluating the position of the markers relative to one another.
References Cited (Backward Citations)
US3983863A
Cited
US4048990A
Cited
SU1009457A1
Cited
US4428375A
Cited
US4403604A
Cited
JPS60203250A
Cited
US4630597A
Cited
US4690134A
Cited
US4957477A
Cited
US4878890A
Cited
US4936857A
Cited
US4821723A
Cited
EP0280564A2
Cited
GB2209678A
Cited
US4834707A
Cited
JPH01145066A
Cited
DE3831540A1
Cited
US4976730A
Cited
US5186711A
Cited
US5057117A
Cited
US4973300A
Cited
US5087243A
Cited
US5131905A
Cited
US5429584A
Cited
US5150706A
Cited
US5290217A
Cited
US5524633A
Cited
US5192314A
Cited
US5383840A
Cited
US5256132A
Cited
US5356432A
Cited
US5356432B1
Cited
US5385156A
Cited
US5507779A
Cited
US5603337A
Cited
US5647380A
Cited
US5713954A
Cited
US5800528A
Cited
DE29517393U1
Cited
US5702343A
Cited
WO1998029041A1
Cited
WO1998058598A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-04-22 | 2005-10-22 | 2006-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-22 | 2009-10-22 | 2010-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-22 | 2013-10-22 | 2014-04-23 | $7700.00 | Window Closed / Lapsed |