Ablation probe with stabilizing member

A building block, robust technology, applied in the field of surgical ablation probes, which can solve the problems of traumatic surgery and inappropriate patients

Inactive Publication Date: 2007-11-14
CARDIMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surgical approach is quite invasive and not suitable for a large number of patients

Method used

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  • Ablation probe with stabilizing member
  • Ablation probe with stabilizing member
  • Ablation probe with stabilizing member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] 1-6 illustrate a surgical ablation probe assembly 10 generally comprised of an ablation member 11 and a stabilization member 12 embodying features of the present invention.

[0047] The ablation member 11 has an elongated shaft 13 with a proximal shaft section 14 , a distal shaft section 15 , and a plurality of ablation electrodes 16 on the distal shaft section 15 . A handle 17 is secured to the end of the proximal shaft section 14 with an electrical connector 18 adapted to be secured to an RF power source (as shown in Figure 8). The handle 17 has a finger-operated ring 20 for adjusting the shape of the distal shaft section, such as the curved configuration shown at 15A. The distal shaft section 15 has a flexible (elastic) distal tip 21 located at the distal end of the electrode, adapted to guide the distal end of the ablation member into the guide groove of the stabilization member 12 . Suitable commercial products for the ablation member include REVELATION(R) T-Flex,...

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Abstract

A surgical ablation probe assembly (10) particularly suitable for ablating tissue on a surface of a patient's heart having an ablation member (11) and a stabilizing member (12) for guiding the probe assembly to an intracorporeal location such as a surface of the patient's heart. The elongated ablation member generally has at least one ablation electrode (16) on a distal shaft section (15). The stabilizing member (12) has a vacuum lumen (30) which applies a vacuum to the inner chamber of the stabilizing member to aspirate fluid from within the chamber or about the stabilizing member and can aid in holding the stabilizing member to an intracorporeal surface such as the epicardial or endocardial surface of the patient's heart. The probe assembly may also have a removable stylet to help retain the shape of the distal portion. The assembly is suitable for treating a patient for atrial arrhythmia, by forming linear or curvilinear lesions and preferably a continuous lesion on the surface of the patient's heart.

Description

technical field [0001] The present invention relates generally to surgical ablation probes and the use of these probes in the treatment of cardiac arrhythmias, especially atrial fibrillation and atrial flutter. Background technique [0002] Atrial fibrillation is an abnormal depolarization of a patient's atria with little or no effective atrial contraction. Existing methods for treating arrhythmias in patients include the use of antiarrhythmic drugs, such as sodium or calcium channel blockers or drugs that reduce beta-adrenergic activity. Other approaches include surgically removing the source of the arrhythmia signal or cutting off the pathway by which such signals are conducted. However, surgical approaches are quite invasive and not suitable for a large number of patients. The more frequently used technique to eliminate arrhythmias involves ablation of arrhythmogenic cardiac tissue by applying laser beams or high frequency electrical energy such as radio frequency (RF) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/14
Inventor 阿希克·K·莫汉威廉·K·惠勒陈光源布平达尔·S·明哈斯
Owner CARDIMA
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