Source: http://www.google.com/patents/US7189202?dq=5,598,374
Timestamp: 2014-03-16 07:52:31
Document Index: 591661026

Matched Legal Cases: ['art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2']

Patent US7189202 - Self-sizing cardiac harness for treating congestive heart failure - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA cardiac harness for treating congestive heart failure is disclosed. The harness applies elastic, compressive reinforcement on the left ventricle to reduce deleterious wall tension and to resist shape change of the ventricle during the mechanical cardiac cycle. Rather than imposing a dimension beyond...http://www.google.com/patents/US7189202?utm_source=gb-gplus-sharePatent US7189202 - Self-sizing cardiac harness for treating congestive heart failureAdvanced Patent SearchPublication numberUS7189202 B2Publication typeGrantApplication numberUS 10/693,577Publication dateMar 13, 2007Filing dateOct 23, 2003Priority dateMar 10, 2000Fee statusPaidAlso published asCA2402504A1, DE60124872D1, DE60124872T2, EP1261294A1, EP1261294B1, US6595912, US6602184, US6612979, US6663558, US6682474, US7077802, US7081086, US7097611, US7124493, US7238152, US7276022, US7410461, US20020019580, US20020028981, US20020032364, US20020045798, US20020045800, US20020052538, US20030065248, US20040106848, US20040162463, US20040171906, US20040230091, US20050020874, US20050102016, US20050107661, WO2001067985A1Publication number10693577, 693577, US 7189202 B2, US 7189202B2, US-B2-7189202, US7189202 B2, US7189202B2InventorsLilip Lau, Bill HartiganOriginal AssigneeParacor Medical, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (109), Non-Patent Citations (68), Classifications (25), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetSelf-sizing cardiac harness for treating congestive heart failureUS 7189202 B2Abstract A cardiac harness for treating congestive heart failure is disclosed. The harness applies elastic, compressive reinforcement on the left ventricle to reduce deleterious wall tension and to resist shape change of the ventricle during the mechanical cardiac cycle. Rather than imposing a dimension beyond which the heart cannot expand, the harness provides no hard limit over the range of diastolic expansion of the ventricle. Instead, the harness follows the contour of the heart throughout diastole and continuously exerts gentle resistance to stretch. Also disclosed is a method of delivering the cardiac harness to the heart minimally invasively.
RELATED APPLICATIONS This application is a continuation of U.S. application Ser. No. 09/952,116 filed Sept. 10, 2001 now U.S. Pat. No. 6,663,558, which is a continuation of U.S. Ser. No. 09/634,043, filed Aug. 8, 2000 now U.S. Pat. No. 6,702,732, and which claims priority to U.S. application Ser. No. 60/188,282, filed Mar. 10, 2000.
FIGS. 27A�7B are schematic illustrations of sharp anchors extending from the bending hinges of the cardiac harness into the myocardium (heart muscle).
Delivery of the harness 4 can be accomplished through conventional cardiothoracic surgical techniques through a median sternotomy. Alternatively, the harness 4 may be delivered through minimally invasive surgical access to the thoracic cavity, as illustrated in FIG. 19. A delivery device 36 may be inserted into the thoracic cavity 34 between the patient's ribs to gain direct access to the heart 2. Preferably, such a minimally invasive procedure is accomplished on a beating heart, without the use of cardiopulmonary bypass. Access to the heart can be created with conventional surgical approaches. The pericardium may be opened completely, or a small incision can be made in the pericardium (pericardiotomy) to allow the delivery system 36 access to the heart 2. The delivery system 36 of the disclosed embodiments comprises an integrated unit of several components, as illustrated in FIGS. 20 a and 20 b. Preferably, there is a releasable suction device, such as a suction cup 38, at the distal tip of the delivery device 36. This negative pressure suction cup 38 is used to hold the apex of the heart 2. Negative pressure can be applied to the cup 38 using a syringe or other vacuum device. A negative pressure lock can be achieved through a one-way valve, stopcock, or a tubing clamp. The suction cup 38, advantageously formed of a biocompatible material, is preferably stiff to prevent any negative pressure loss through heart manipulation this provides traction by which the harness 4 can be pushed forward onto the heart 2. In addition, the suction cup 38 can be used to lift the heart 2 to facilitate advancement of the harness 4 or allow visualization and surgical manipulation of the posterior side of the heart 2. After secure purchase of the apex of the heart 2 is achieved, the harness 4, which is collapsed within the body 46 of the delivery device 36, is advanced distally toward the heart 2 by actuating fingers 40. The harness 4 can be inverted (i.e., turned inside-out) ahead of time, to allow it to unroll, or evert as it advances over the surface of the heart 2. In this discussion, the term �evert� means turning right-side in, i.e., reversing an inverting process. After the harness 4 is advanced into place, the suction is released and the delivery system 36 is released from the harness 4 and heart 2.
FIGS. 35 a�36 b illustrate a method of manufacturing the strips, or rows, of hinges 6. A sheet (or more than one sheet) of Nitinol or other suitable material is cut to form a single, continuous ring 80 of hinges 6. This ring 80 is initially flat after it has been cut from the sheet of material, as shown in FIGS. 35 a (top view) and 35 b (side view). The ring 80 is preferably parallel to the surface (e.g., a table or board) on which the ring 80 is formed. The ring is then manipulated to create a band-like configuration, which can be cylindrical or beveled, as illustrated in FIGS. 36 a (top view) and 36 b (side view).
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Marcus, et al., Electrophysiological Effects of Monophasic and Biphasic Stimuli in Normal and Infarcted Dogs, PACE, vol. 13, pp. 1158-1172, Sep. 1990.Classifications U.S. Classification600/37International ClassificationA61N1/362, A61B17/00, A61N1/375, A61N1/05, A61F2/00, A61F2/24Cooperative ClassificationA61M1/127, A61F2002/0072, A61F2002/2484, A61M2205/0266, A61M2001/122, A61M2001/1048, A61N1/3627, A61M2205/8206, A61M2001/1003, A61M2205/3523, A61N1/0587, A61F2/2481, A61M1/1068, A61M2001/1056European ClassificationA61N1/362C, A61M1/10E50B, A61F2/24W2, A61N1/05PLegal EventsDateCodeEventDescriptionSep 13, 2010FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google