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Ablation catheter

a catheter and tissue technology, applied in the field of catheters and methods for performing targeted tissue ablation, can solve the problems of organ malfunction, lack of synchrony, and ineffective pumping of blood into the ventricl

Inactive Publication Date: 2006-04-27
MEDTRONIC ABLATION FRONTIERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disturbance of such electrical transmission may lead to organ malfunction.
Atrial fibrillation refers to a type of cardiac arrhythmia where there is disorganized electrical conduction in the atria causing rapid uncoordinated contractions that result in ineffective pumping of blood into the ventricle and a lack of synchrony.
As a result, blood pools in the atria that increases a risk for blood clot formation.
Medication therapy assists only in the management of atrial fibrillation symptoms, may present side effects more dangerous than atrial fibrillation, and fail to cure atrial fibrillation.
Electrical cardioversion attempts to restore sinus rhythm but has a high recurrence rate.
In addition, if there is a blood clot in the atria, cardioversion may cause the clot to leave the heart and travel to the brain or to some other part of the body, which may lead to stroke.
The Cox-Maze procedure and linear ablation procedures are tedious and time-consuming, taking several hours to accomplish.
Pulmonary vein ostial ablation is proving to be difficult to do, and has lead to rapid stenosis and potential occlusion of the pulmonary veins.

Method used

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Embodiment Construction

[0024] Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0025] The present invention provides catheters for performing targeted tissue ablation in a subject. In preferred embodiments, the catheters comprise a tubular body member having a proximal end and distal end and preferably a lumen extending therebetween. The catheter is preferably of the type used for performing intracardiac procedures, typically being introduced from the femoral vein in a patient's leg. The catheter is preferably introducable through a sheath and also preferably has a steerable tip that allows positioning of the distal portion such as when the distal end of the catheter is within a heart chamber. The catheters include ablation elements mounted on a carrier assembly. The carrier assembly is attach...

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Abstract

Devices, systems and methods are disclosed for the ablation of tissue. Embodiments include an ablation catheter which has an array of ablation elements attached to a deployable carrier assembly. The carrier assembly can be constrained within the lumen of a catheter, and deployed to take on an expanded condition.

Description

STATEMENT OF RELATED APPLICATION [0001] This application claims the benefit of priority of U.S. Provisional Patent Application No. 60 / 618,753, filed Oct. 14, 2004, entitled “Ablation Catheter,” which is incorporated by reference herein in its entirety.FIELD OF THE INVENTION [0002] The present invention relates generally to catheters and methods for performing targeted tissue ablation in a subject. In particular, the present invention provides devices comprising catheters having distal ends configured to treat two dimensional regions of target tissue, including deployable distal ends, and methods for treating conditions (e.g., cardiac arrhythmias) with these and similar devices. BACKGROUND OF THE INVENTION [0003] Tissue ablation is used in numerous medical procedures to treat a patient. Ablation can be performed to remove undesired tissue such as cancer cells. Ablation procedures may also involve the modification of the tissue without removal, such as to stop electrical propagation t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B18/14
CPCA61B18/1492A61B2017/00482A61B2018/0016A61B2018/00214A61B2018/00291A61B2018/00351A61B2018/1467A61B18/16A61B18/18
Inventor WERNETH, RANDELL L.SHERMAN, MARSHALL L.CASTELLANO, THOMAS M.FLAHERTY, J. CHRISTOPHERCURRIE, GARY EDWARD
Owner MEDTRONIC ABLATION FRONTIERS
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