US 9,427,235 B2Granted

Apparatus and method for treating bleeding arising from left atrial appendage

OwnerSubramaniam Chitoor Krishnaninventor

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Abstract

Bleeding arising from the left atrial appendage (LAA) can have fatal consequences because it can result in cardiac tamponade. The present invention provides apparatuses and methods for treating and preventing bleeding arising from the LAA, at the pre-hemorrhage and post-hemorrhage stages. In particular, catheters having inflatable catheter balloons are advanced into the LAA and the inflatable catheter balloons are inflated in and around the LAA in a manner that occludes the LAA ostium and the LAA cavity. Additionally, electromagnetic coils are present within the inflatable catheter balloons to create electromagnetic forces that help to further occlude the LAA ostium firmly. When the catheter balloons are inflated, these electromagnetic coils also expand. Alternatively, the LAA ostium can be occluded using electromagnetic coils present in an inflated endocardial catheter balloon and electromagnetic coils present in an inflated epicardial catheter balloon deployed around the circumference of the LAA ostium epicardially.

Claims9

Dependent claims

A method for treating and preventing bleeding arising from a left atrial appendage (LAA), comprising the steps of:

introducing a catheter into a body cavity;
advancing a guide wire tip of the catheter to and past an ostium of the LAA, and into a cavity of the LAA;
advancing a catheter sheath of the catheter towards the guide wire tip until the catheter sheath advances past the LAA ostium and into the LAA cavity;
inflating, distal to the LAA ostium, a first inflatable catheter balloon having a first set of electromagnetic coils, wherein the first catheter balloon is affixed to the catheter sheath, and wherein upon inflation of the first catheter balloon, the first set of electromagnetic coils also expand;
performing a tug test on the inflated first catheter balloon to occlude the LAA ostium;
and
inflating, proximal to the LAA ostium, a second inflatable catheter balloon having a second set of electromagnetic coils, wherein the second catheter balloon is affixed to the catheter sheath, and wherein upon inflation of the second catheter balloon, the second set of electromagnetic coils also expand.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/922,070Filed 19 Jun 2013 · us provisional application
Priority: 19 Jun 2012
Published: US 2014/0379021 A125 Dec 2014
Granted: 30 Aug 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

A61B 17/12122
Characterised by the location of the occluder: within the heart
A61B 17/1204
Type of occlusion: temporary occlusion
A61B 17/12045
Temporary occlusion: double occlusion, e.g. during anastomosis
A61B 17/12136
Characterised by the type of occluding device: balloons

Family

Application61/661,350Us provisional application · filed 19 Jun 2012
US 2014/0379021 A1Pre-grant publication · published 25 Dec 2014
US 9,186,150 B2Related patent
US 9,427,235 B2This patent

From the US filing history. Foreign family members aren’t listed.