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Method and system for treatment of atrial fibrillation and other cardiac arrhythmias

A technology for arrhythmia and atrial fibrillation, which can be used in surgical navigation systems, cardiac catheters, and parts of surgical instruments to solve problems such as pulmonary vein stenosis, limited use of ablation therapy, and inability to reproducibly induce premature beats.

Inactive Publication Date: 2007-09-12
MEDTRONIC INC
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  • Abstract
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Problems solved by technology

The use of ablation in many patients is limited by the complex three-dimensional geometry of the left atrium, the inability to reproducibly induce premature beats, and the inability to precisely identify the entry or junction of the pulmonary veins and the left atrium
There is also a risk of complications such as stroke, bleeding around the heart, narrowing of the pulmonary veins during radiofrequency catheter ablation

Method used

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  • Method and system for treatment of atrial fibrillation and other cardiac arrhythmias
  • Method and system for treatment of atrial fibrillation and other cardiac arrhythmias
  • Method and system for treatment of atrial fibrillation and other cardiac arrhythmias

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Embodiment Construction

[0016] Detailed description of the preferred embodiment

[0017] Figure 1 shows a schematic overview of an exemplary system for treating cardiac arrhythmias such as atrial fibrillation in accordance with the present invention. Cardiac image data is acquired using a digital imaging system such as CT scanning system 10 . While the embodiments discussed hereinafter describe the context of a CT scanning system, it should be understood that other imaging systems known in the art, such as MRI and ultrasound, are also contemplated.

[0018] Cardiac image data 12 is a series of consecutive images of the heart collected by CT scanning system 10 in sequential order over a relatively short acquisition time. By using a faster CT scanning system and synchronizing the QRS between the CT scanner and the patient's ECG signal, scan times can be shortened and motion artifacts in images of beating organs such as the heart can be reduced. The resulting cardiac image data 12 enables the reconstr...

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Abstract

A method is provided for treatment of a heart arrhythmia such as atrial fibrillation that includes obtaining cardiac image data using a digital imaging system, generating a 3D model of a cardiac chamber and surrounding structures from such cardiac image data, registering the 3D model with an interventional system, visualizing this registered 3D model on the interventional system, positioning a catheter apparatus within the cardiac chamber, visualizing the catheter apparatus over the registered 3D model of the cardiac chamber upon the interventional system, navigating the catheter apparatus within the cardiac chamber utilizing this registered 3D model, and delivering biological material through the catheter apparatus to heart tissue at select locations within the cardiac chamber. Preferably, the biological material are transplanted cells or antibodies. In another aspect of the invention, a system for treatment of heart arrhythmias is provided that has a digital imaging system to obtain cardiac image data, an image generation system to generate a 3D model of a cardiac chamber and its surrounding structures from this cardiac image data, a workstation to register the 3D model onto an interventional system so that the registered 3D model can be visualized upon the interventional system, and a catheter apparatus to deliver biological material such as transplanted cells or antibodies to heart tissue within this cardiac chamber at certain select locations, the catheter apparatus being visualized upon the interventional system over the registered 3D model.

Description

field of invention [0001] The present invention relates generally to methods and systems for treating atrial fibrillation and other cardiac arrhythmias, and in particular to methods and systems for delivering biological substances to the atria of the heart. Background of the invention [0002] Atrial fibrillation is a cardiac arrhythmia in which the atria or upper ventricles stop contracting due to fibrillation. Atrial premature contractions (extrabeats) from the pulmonary veins can act as a trigger, leading to the onset of atrial fibrillation. The use of ablation therapy in many patients is limited by the complex three-dimensional geometry of the left atrium, the inability to reproducibly induce premature beats, and the inability to precisely identify the entry or junction of the pulmonary veins and the left atrium. There is also a risk of complications such as stroke, bleeding around the heart, narrowing of the pulmonary veins during radiofrequency catheter ablation. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/12A61B6/00A61B6/03A61B17/00A61B19/00
CPCA61B6/541A61B2018/00392A61B6/503A61B6/466A61B8/0891A61B6/504A61B2019/505A61B2019/5289A61B6/032A61B2017/00247A61B19/5244A61B19/52A61B6/12A61B90/36A61B34/20A61B2090/364A61B2034/105
Inventor J·S·斯拉
Owner MEDTRONIC INC
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