Source: http://www.google.es/patents/US8267852
Timestamp: 2017-10-20 09:13:40
Document Index: 403427786

Matched Legal Cases: ['art.\n4', 'art.\n6', 'Application No. 09', 'Application No. 08', 'Application No. 09', 'Application No. 09']

Patente US8267852 - Heart wall tension reduction apparatus and method - Google Patentes
Devices and methods for treatment of a failing heart by reducing the heart wall stress. The device can be one which reduces wall stress throughout the cardiac cycle or only a portion of the cardiac cycle....http://www.google.es/patents/US8267852?utm_source=gb-gplus-sharePatente US8267852 - Heart wall tension reduction apparatus and method
Número de publicación US8267852 B2
Número de solicitud US 12/832,507
También publicado como US7883539, US8460173, US20020161275, US20050131277, US20100274076, US20130006041, US20140094647
Número de publicación 12832507, 832507, US 8267852 B2, US 8267852B2, US-B2-8267852, US8267852 B2, US8267852B2
Inventores Cyril J. Schweich, Jr., Robert M. Vidlund, Todd J. Mortier
Cesionario original Edwards Lifesciences, Llc
Citas de patentes (686), Otras citas (91), Clasificaciones (14), Eventos legales (2)
US 8267852 B2
1. A method for improving the function of a heart, the method comprising:
positioning a passive heart device relative to an external heart wall, the device including a wrap, a plurality of elongate anchors, and at least one flexible member extending from one of the plurality of elongate anchors;
encircling a portion of the heart with the wrap, wherein the portion does not include an apex of the heart; and
securing the device to the external heart wall by disposing a portion of the flexible member in heart tissue.
2. The method of claim 1, further comprising the step of exerting a compressive force on the external heart wall.
3. The method of claim 2, wherein exerting a compressive force on the external heart wall alters a geometric configuration of the heart.
4. The method of claim 3, wherein the geometric configuration is a shape of a heart chamber.
5. The method of claim 4, wherein the heart chamber is a left ventricle of the heart.
6. The method of claim 1, wherein encircling a portion of the heart with the wrap includes fully encircling the heart.
This application is a continuation of U.S. application Ser. No. 10/127,731 (“the '731 application”) of Cyril J. SCHWEICH Jr. et al. for HEART WALL TENSION REDUCTION APPARATUS AND METHOD, filed on Apr. 23, 2002 now U.S. Pat. No. 7,883,539, which is a continuation-in-part of U.S. application Ser. No. 09/985,361 of Cyril J. SCHWEICH, Jr. et al. for HEART WALL TENSION REDUCTION APPARATUS AND METHOD, filed Nov. 2, 2001, now U.S. Pat. No. 6,589,160, which is a continuation of U.S. application Ser. No. 09/697,597, filed Oct. 27, 2000, now U.S. Pat. No. 6,332,864, which is a continuation of Application No. 09/492,777, filed Jan. 28, 2000, now U.S. Pat. No. 6,162,168, which is a continuation of Application No. 08/778,277, filed Jan. 2, 1997, now U.S. Pat. No. 6,050,936.
The '731 application also is a continuation-in-part of U.S. application Ser. No. 09/843,078 of Todd J. MORTIER et al. for STRESS REDUCTION APPARATUS AND METHOD, filed Apr. 27, 2001, now U.S. Pat. No. 6,402,680, which is a continuation of Application No. 09/522,068, filed Mar. 9, 2000, now U.S. Pat. No. 6,264,602, which is a continuation of Application No. 09/124,321, filed Jul. 29, 1998, now U.S. Pat. No. 6,077,214. The entirety of each of the above applications is incorporated herein by reference.
Yet another embodiment of the invention includes a damp having two ends biased toward one another for drawing at least two walls of a heart chamber toward each other. The damp includes at least two ends having atraumatic anchoring member disposed thereon for engagement with the heart or chamber wall.
The present invention also pertains to a device and method for reducing mechanical heart wall muscle stress. Heart muscle stress is a stimulus for the initiation and progressive enlargement of the left ventricle in heart failure. Reduction of heart wall stress with the devices and methods disclosed herein is anticipated to substantially slow, stop or reverse the heart failure disease process. Although the primary focus of the discussion of the devices and methods of the present invention herein relates to heart failure and the left ventricle, these devices and method could be used to reduce stress in the hearts other chambers.
FIG. 23 is a cross sectional view of a patient's torso and heart showing a band splint anchored to the patients ribs;
FIG. 5 is an idealized horizontal cross section of a left ventricle 40 subdivided into three generally equal sized lobes 42, 44 and 46. Each lobe has an equal radius and has an arc passing through an angle less than π. Adjacent ends of the lobes 48, 50 and 52 are separated by a distance l. A plurality of transventricular splints such as splint 12 as shown in FIGS. 1 and 2 could be extended between adjacent ends 48, 50 and 52 to form lobe's 42, 44 and 46.
FIG. 37 shows various parameters of the figure eight cross-section of the splinted idealized heart chamber of FIG. 36. Where l is the length of the splint between opposite walls of the chamber, R2 is the radius of each lobe, θ is the angle between the two radii of one lobe which extends to opposite ends of the portion of the splint within chamber 48′ and h is the height of the triangle formed by the two radii and the portion of the splint within the chamber 48′ (R1 is the radius of the cylinder of FIG. 35). These various parameters are related as follows:
l=2R2 SIN(θ/2)
Thus, for example, with an original cylindrical radius of four centimeters and a pressure within the chamber of 140 mm of mercury, the wall tension T in the walls of the-cylinder is 104.4 newtons. When a 3.84 cm splint is placed as shown in FIGS. 36 and 37 such that l=3.84 cm, the wall tension T is 77.33 newtons.
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Clasificación internacional A61B17/04, A61F2/00, A61B17/00, A61B17/122
Clasificación cooperativa A61B17/00234, A61B2017/0496, A61B17/1227, A61B2017/0404, A61B2017/048, A61F2/2481, A61B2017/00243
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHWEICH, CYRIL J.;VIDLUND, ROBERT M.;MORTIER, TODD J.;REEL/FRAME:025142/0027
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MYOCOR, INC.;REEL/FRAME:025142/0076