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Ablation probe with stabilizing member

a technology of stabilizing member and probe, which is applied in the field of surgical ablation probe, can solve the problems of unsuitable for a large number of patients and the surgical technique is quite traumatizing, and achieve the effects of facilitating the holding of the stabilizer and the exposed electrode, determining the effectiveness of the lesion formation, and facilitating shaping

Inactive Publication Date: 2009-11-05
CARDIMA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"This patent describes a surgical ablation probe assembly for creating lesions in a patient's heart to treat atrial arrhythmias. The assembly includes an elongated ablation member with at least one ablation electrode on its distal shaft section. The assembly also includes a stabilizing member with a distal section that can securely hold the ablation member in place on the heart wall. The ablation member has a distal shaft section with at least one ablation electrode and a vacuum lumen for holding the member in place. The assembly can create linear or curvilinear lesions in the heart wall. The invention provides a flexible and effective tool for creating lesions in the heart to treat atrial arrhythmias."

Problems solved by technology

However, the surgical technique is quite traumatic and is 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

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Embodiment Construction

[0047]FIGS. 1-6 illustrate a surgical ablation probe assembly 10, embodying features of the invention, which generally comprises an ablation member 11 and a stabilizing member 12.

[0048]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 which has an electrical connector 18 adapted to be secured to an RF energy source (such as shown in FIG. 8). The handle 17 has a finger operated ring 20 for adjusting the shape of the distal shaft section such as the curved structure shown as 15A. The distal shaft section 15 has a flexible distal tip 21 distal to the electrodes which is adapted to guide the distal end of the ablation member into the guideway of the stabilizing member 12. Suitable commercial products for the ablation member include the REVELATION® T-Flex, a deflectable micro catheter with ...

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Abstract

A surgical ablation probe assembly particularly suitable for ablating tissue on a surface of a patient's heart having an ablation member and a stabilizing member 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 on a distal shaft section. The stabilizing member has a vacuum lumen 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

RELATED APPLICATIONS[0001]This application is based on Provisional Application Ser. No. 60 / 571,081, filed on May 14, 2004, Provisional Application Ser. No. 60 / 602,415, filed on Aug. 18, 2004, and Provisional Application Ser. No. 60 / 614,703, filed on Sep. 30, 2004. These applications are relied upon for priority and are incorporated herein in their entireties by reference.BACKGROUND OF THE INVENTION[0002]This invention generally relates to surgical ablation probes and the use of such probes in the treatment of cardiac arrhythmia and particularly atrial fibrillation and atrial flutter.[0003]Atrial fibrillation is the disorganized depolarization of a patient's atrium with little or no effective atrial contraction. Prior methods for treating a patient's arrhythmia include the use of anti-arrhythmic drugs such as sodium and calcium channel blockers or drugs which reduce the Beta-adrenergic activity. Other methods include surgically sectioning the origin of the signals causing the arrhyth...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B18/14A61B17/00
CPCA61B18/1482A61B18/1492A61B2018/00577A61B2018/00357A61B2018/00363A61B2018/00291
Inventor MOHAN, ASHIK A.WHEELER, WILLIAM K.CHAN, ERIC K.Y.MINHAS, BHUPINDER S.
Owner CARDIMA
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