Methods and devices for intra-atrial shunts having adjustable sizes

a technology of adjustable size and shunt, which is applied in the field of methods and devices for treating heart failure, can solve the problems of increased pulmonary venous pressure, shortness of breath, exercise intolerance, etc., and achieve the effects of reducing both left atrial and pulmonary venous pressure, reducing the risk of acute worsening of heart failure, and reducing the risk of later development of pulmonary hypertrophy

Inactive Publication Date: 2013-07-11
DC DEVICES
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]In general, the present invention concerns treating heart disease by reducing both left atrial and pulmonary venous pressure. To this end, devices and methods are disclosed herein which may include the creation of a pressure relief shunt in the atrial septum or the placing of a device having a changeable hydraulic diameter into an already existing aperture in the atrial septum. Furthermore, devices and methods are disclosed herein which allow for adjusting the pressure relief shunt in response to the natural progression of the patient during the course of treatment. Additionally, devices and methods are disclosed which provide a treatment which may be adjusted to or which automatically adjusts to the ...

Problems solved by technology

Left heart failure can lead to elevated pulmonary venous pressure, which may cause respiratory problems, including shortness of breath and exercise intolerance.
The adverse clinical result of each of these conditions is similar; the heart failure leads to elevated pressure in the left atrium and elevated pressure in the pulmonary veins, impeding proper flow of oxygenated blood through the blood supply.
More generally, diastolic heart failure is failure of the ventricle to adequately relax and expand in order to fill with blood, causing a decrease in the stroke volume of the heart.
Presently, there exist very few treatment options for patients suffering from diastolic heart failure.
The hypertrophy of the pulmonary arteries in turn leads to worsening symptoms of heart failure.
The hemodynamic conditions associated with diastolic heart failure are not static, and attempting to treat the disease with a static pressure relief shunt represents a deficiency in the prior art.
For example, if a shunt is sized too large the short term effect of the creation of a pressure relief shunt may include a sudden...

Method used

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  • Methods and devices for intra-atrial shunts having adjustable sizes
  • Methods and devices for intra-atrial shunts having adjustable sizes
  • Methods and devices for intra-atrial shunts having adjustable sizes

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Embodiment Construction

[0050]Certain specific details are set forth in the following description and Figs. to provide an understanding of various embodiments. Those of ordinary skill in the relevant art will understand that they can practice other embodiments without one or more of the details described below. Further, while various processes are described herein with reference to steps and sequences, the steps and sequences of steps are not be understood as being required to practice all embodiments of the present invention.

[0051]Unless otherwise defined, explicitly or implicitly by usage herein, all technical and scientific terms used herein have the same meaning as those which are commonly understood by one of ordinary skill in the art to which this present invention pertains. Methods and materials similar or equivalent to those described herein may be used in the practice or testing of the present invention. In case of conflict between a common meaning and a definition presented in this document, latt...

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Abstract

Devices and methods for treating heart disease by normalizing elevated blood pressure in the left and right atria of a heart of a mammal are disclosed. Devices may include an adjustable hydraulic diameter shunt portion which can be manually adjusted in vivo. Methods are provided for adjusting the flow rate of the devices in vivo.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a non-provisional of U.S. Provisional Application No. 61 / 579,426, filed Dec. 22, 2011, entitled “Systems, Methods and Devices for Resizing Intra-Atrial Shunts” and of U.S. Provisional Application No. 61 / 659,520, filed Jun. 14, 2012, entitled “Adjustable Intra-Atrial Shunts”, both of which are incorporated by reference herein in their entireties.FIELD OF THE INVENTION[0002]The present invention relates to methods and devices for treating heart failure. In particular, the present invention relates to methods and devices for treating heart failure by reducing elevated blood pressure in a heart chamber by creating a pressure relief shunt. Additionally, the present invention relates to methods and devices for customizing, adjusting or manipulating the flow of blood through the shunt in order to enhance the therapeutic effect of the pressure relief shunt.BACKGROUND[0003]Heart failure is a condition effecting millions of peop...

Claims

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Application Information

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IPC IPC(8): A61M27/00
CPCA61M27/002A61F2/2412A61F2/2418A61F2/24A61B2017/00623A61F2/2493A61B2017/00592A61B2017/00584A61B2017/00575A61B2017/00247A61B2017/00606
Inventor MCNAMARA, EDWARDSUTHERLAND, MICHAEL W.FINCH, MATTHEW J.FORCUCCI, STEPHEN J.
Owner DC DEVICES
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