Source: http://www.google.com/patents/US6165121?dq=7,249,099
Timestamp: 2015-05-30 02:46:27
Document Index: 121935796

Matched Legal Cases: ['art. 2', 'art.\n3', 'art.\n5', 'art. 11', 'art.\n16', 'art.\n17', 'art.\n19', 'art. 20', 'art.\n24']

Patent US6165121 - Cardiac reinforcement device - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe 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...http://www.google.com/patents/US6165121?utm_source=gb-gplus-sharePatent US6165121 - Cardiac reinforcement deviceAdvanced Patent SearchPublication numberUS6165121 APublication typeGrantApplication numberUS 09/376,812Publication dateDec 26, 2000Filing dateAug 18, 1999Priority dateOct 2, 1996Fee statusPaidAlso published asCA2267104A1, CA2267104C, CA2451964A1, DE29724206U1, DE69731890D1, DE69731890T2, EP0930856A1, EP0930856B1, US5702343, US6077218, US6126590, US6165122, US6375608, US6544168, US6893392, US7163507, US7166071, US7255674, US7261684, US7278964, US7351200, US20020091296, US20030149333, US20040059181, US20040059182, US20040059187, US20040059188, US20040059189, US20040171909, US20040181124, US20070225547, WO1998014136A1Publication number09376812, 376812, US 6165121 A, US 6165121A, US-A-6165121, US6165121 A, US6165121AInventorsClifton A. AlfernessOriginal AssigneeAcorn Cardiovascular, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (43), Non-Patent Citations (21), Referenced by (86), Classifications (12), Legal Events (8) External Links: USPTO, USPTO Assignment, EspacenetCardiac reinforcement device
US 6165121 AAbstract
1. An arrangement for placing a cardiac reinforcement device onto a heart comprising:a cardiac reinforcement device, said cardiac reinforcement device comprising:(i) a biomedical material which can be applied to a surface of said heart and having a maximum predetermined size, said predetermined size selected to constrain cardiac expansion beyond a predetermined limit, said cardiac reinforcement device configured into a jacket, said jacket having an open base end and an apex end; a placement tool for maintaining said open base end in a configuration for passing said open base end over said surface of said heart. 2. The arrangement according to claim 1 wherein said placement tool includes a loop around which said open base end of said jacket can be applied to maintain said open base end of said jacket in a configuration for passing over said surface of said heart.
3. The arrangement according to claim 2 wherein said loop comprises a guide tube, said guide tube capable of passing around a circumference of said base end of said jacket.
4. The arrangement according to claim 3 wherein said loop further comprises a guide wire, said guide wire capable of passing through said guide tube at said base end of said jacket to selectively expand said open base end of said jacket into a configuration for passing over said surface of said heart.
5. The arrangement according to claim 1 wherein said biomedical material is substantially non-elastic.
6. The arrangement according to claim 5 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.
7. The arrangement according to claim 1 wherein said biomedical material is a polyester mesh.
8. The arrangement according to claim 1 wherein said apex end of said cardiac reinforcement device is open.
9. The arrangement according to claim 1 further comprising a cannula for insertion of said cardiac reinforcement device and said placement tool through a thorascopic incision.
10. A system for cardiac reinforcement comprising:a cardiac reinforcement device comprising:(a) a cone-shaped biomedical material having an apical end and a base end and which generally conforms to an 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 said external geometry of said heart and constrain cardiac expansion beyond a predetermined limit; and a placement tool for maintaining said base end of said cardiac reinforcement device in an open position for passing said cardiac reinforcement device over said external geometry of said heart. 11. The system according to claim 10 wherein said cone-shaped biomedical material is substantially non-elastic.
12. The system according to claim 10 wherein said cone-shaped biomedical material has a lateral slot providing for selective adjustment of a circumference of said cone-shaped biomedical material to said predetermined size.
13. The system according to claim 10 wherein said apical end of said cardiac reinforcement device is open.
14. The system according to claim 10 wherein said biomedical material is a polyester mesh.
15. The system according to claim 10 wherein said base end of said cone-shaped biomedical material includes a securing arrangement for securing said device to said patient's heart.
16. The system according to claim 10 wherein said placement tool includes a loop around which said base end of said cardiac reinforcement device can be applied to maintain said open base end of said cardiac reinforcement device in a configuration for passing over said external geometry of said heart.
17. The system according to claim 16 wherein said loop comprises a guide tube, said guide tube capable of passing around a circumference said base end of said cardiac reinforcement device.
18. The system according to claim 17 wherein said loop further comprises a guide wire, said guide wire capable of passing through said guide tube at said base end of said cardiac reinforcement device to selectively expand said base end of said cardiac reinforcement device to pass over said external geometry of said heart.
19. A method for reducing diastolic volume of a patient's heart, said method comprising:(a) selecting a cardiac reinforcement device said cardiac reinforcement device comprising: e(i) biomedical material which can be applied to an epicardial surface of said heart and having a maximum predetermined size, said predetermined size selected to constrain cardiac expansion beyond a predetermined limit, said cardiac reinforcement device configured into a jacket, said jacket having an open base end and an apex end; (b) applying said open base end of said cardiac reinforcement device to a placement tool, said placement tool having a loop which provides for maintaining said open base end in a configuration for passing said open base end over said epicardial surface of said heart; (c) passing said cardiac reinforcement device over said surface of said heart; and (d) securing said cardiac reinforcement device to said epicardial heart. 20. The method according to claim 19 wherein said biomedical material is substantially non-elastic.
21. The method according to claim 19 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.
22. The method according to claim 19 wherein said placement tool comprises a guide tube, said guide tube capable of passing around a circumference of said open base end of said jacket.
23. The method according to claim 22 wherein said placement tool further comprises a guide wire, said guide wire capable of passing around a circumference of said open base end of said jacket to selectively expand said open base end of said jacket into a configuration for passing over said surface of said heart.
24. The method according to claim 23 wherein said guide wire is passed through said guide tube at said base end of said jacket.
25. The method according to claim 19 further comprising passing said cardiac reinforcement device and said placement tool through a cannula through a minimally invasive incision into said patient's thorax.
The present application is a continuation of U.S. Ser. No. 08/935,440, filed Sep. 23, 1997, which is a continuation application of U.S. Ser. No. 08/720,556, filed Oct. 2, 1996, now U.S. Pat. No. 5,702,343, the entire disclosure of which is incorporated herein by reference.
In a preferred embodiment, if one or more of the lateral attachment cords 48 is made of an elastic material, such as silicone rubber, surface pressure exerted on the epicardial surface of the heart varies as a function of the amount of dilation of the heart. This variable pressure has the effect of reducing the cardiac dilation to a certain point and then stopping because the surface pressure drops to a negligible amount. The amount of constraint or reduction in dilation that is accomplished over time and the resultant cardiac performance may be monitored radiographically using techniques known in the art, for example fluoroscopy, by observing radiographic markers (FIGS. 4, 25), if present.
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CARDIOVASCULAR, INC., MINNESOTAEffective date: 19980206Jul 14, 2011ASAssignmentFree format text: CORRECTIVE ASSIGNMENT TO CORRECT THE RECORDED ASSIGNMENT TO WRONG ASSIGNEE(RECORDED TO ACORN CARDIOVASCULAR WHEN SHOULD HAVE BEEN RECORDED TO ACORN MEDICAL) PREVIOUSLY RECORDED ON REEL 026573 FRAME 0387. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT TO ACORN MEDICAL, INC;ASSIGNOR:ALFERNESS, CLIFTON A.;REEL/FRAME:026594/0903Effective date: 19961129Owner name: ACORN MEDICAL, INC., MINNESOTAJul 11, 2011ASAssignmentFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALFERNESS, CLIFTON A.;REEL/FRAME:026573/0387Owner name: ACORN CARDIOVASCULAR, INC., MINNESOTAEffective date: 19961129May 15, 2008FPAYFee paymentYear of fee payment: 8May 28, 2004FPAYFee paymentYear of fee payment: 4Dec 23, 2003CCCertificate of correctionRotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services