External stress reduction device and method

a stress reduction and external technology, applied in the field of heart failure, can solve the problem that the weight of the device should be limited, and achieve the effect of reducing mechanical heart wall muscle stress, reducing heart wall stress, and improving contractile function

Inactive Publication Date: 2005-03-24
EDWARDS LIFESCIENCES LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009] The present invention pertains to a device and method for reducing mechanical heart wall muscle stress. Heart wall muscle stress is a stimulus for the initiation and progressive enlargement of the left ventricle in heart failure. Reduction in heart wall stress with the devices and methods disclosed herein is anticipated to substantially slow, stop or reverse the heart failure process, some or reverse the heart failure process, improve contractile function with decrease in isovolumetric contractions and improved isotonic shortening. 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 methods could be used to reduce stress in the heart's other chambers.
[0010] The devices and methods of the present invention are primarily external devices which need not necessarily penetrate the heart wall or transect a heart chamber. These devices can be used instead of, or in addition to, internal or transventricular devices. Unlike transventricular devices, however, avoidance of internal ventricular structures such as valves or chordae is...

Problems solved by technology

Additionally, the weight of the device should be limited to reduced movement and for...

Method used

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  • External stress reduction device and method
  • External stress reduction device and method
  • External stress reduction device and method

Examples

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Embodiment Construction

[0049] Referring now to the drawings wherein like reference numerals refer to like elements throughout the several views, FIG. 1 is a generally vertical view of human heart A having a left ventricle B and right ventricle C. Disposed on heart A is a heart wall stress reduction apparatus 10 including a band 12 disposed generally horizontally around heart A. Disposed between band 12 and heart A are generally ellipsoidal balloons 14. In FIG. 2, heart A is shown in context, in a generally transverse cross sectional view of a human torso. Heart A is shown disposed generally between left lung D and right lung E. In FIG. 2 it can be seen that band 12 retains balloon 14 with sufficient force to deform left ventricle B from a generally circular cross sectional configuration to a bi-lobe configuration. It is anticipated that device 10 could be adjusted for full cycle shape change of left ventricle B or be more loosely placed on the heart as a restrictive device, not creating a shape change at ...

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Abstract

An external heart wall stress reduction apparatus is provided to create a heart wall shape change. The device is generally disposed to the exterior of a heart chamber to reshape the chamber into a lower stress configuration.

Description

FIELD OF THE INVENTION [0001] The present invention pertains to the field of heart failure in devices and methods for treatment thereof. BACKGROUND OF THE INVENTION [0002] The syndrome of heart failure is a common course for the progression of many forms of heart disease. Heart failure may be considered to be the condition in which an abnormality of cardiac function is responsible for the inability of the heart to pump blood at a rate commensurate with the requirements of the metabolizing tissues, or can do so only at an abnormally elevated filling pressure. There are many specific disease processes that can lead to heart failure with a resulting difference in pathophysiology of the failing heart, such as the dilatation of the left ventricular chamber. Etiologies that can lead to this form of failure include idiopathic cardiomyopathy, viral cardiomyopathy, and ischemic cardiomyopathy. [0003] The process of ventricular dilatation is generally the result of chronic volume overload or ...

Claims

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Application Information

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IPC IPC(8): A61B17/00A61B17/04A61B17/122A61B19/00
CPCA61B17/00234A61B17/1227A61B19/54A61B2017/00243Y10S623/904A61B2017/048A61B2017/0496A61F2/2481A61B2017/0404A61B90/39
Inventor MORTIER, TODD J.SCHWEICH, CYRIL J. JR.VIDLUND, ROBERT M.KEITH, PETER T.PAULSON, THOMAS M.KUSZ, DAVID A.
Owner EDWARDS LIFESCIENCES LLC
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