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Support adapter for radiofrequency ablation probe: experimental study.

Susumu Ishikawa·Shigeru Oki·Masato Muraoka·Kenji Kashiwabara·Yasuo Morishita
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Abstract

BACKGROUND: The purpose of the present study was to experimentally evaluate a new support adapter, which was created in order to insure a more complete contact between the ablation probe and a beating heart. METHODS: Support sleeve adapters for the Cobra Cooled probe were fashioned using a semi-rigid plastic. Forty epicardial radiofrequency ablation (RFA) lesions were created on both atria under the condition of a beating heart in six pigs weighing 26-30 kg. A Cobra Cooled surgical probe was used with continuous internal irrigation of a saline solution (500 mL/h). The ablation temperature was fixed at 80 degrees C and the duration of the RFA in each case was 20, 30 and 60 s. RESULTS: A support adapter ensured a more complete epicardial contact between the probe and a beating heart. An RFA probe supported by the adapter delivered greater power to the tissue. The histopathological transmural coagulation was obtained in 82% and 72% in RFA lesions with and without the adaptor, respectively. CONCLUSION: A new adapter was effective in the epicardial RFA under the condition of a beating heart.

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AnimalsCardiac Surgical ProceduresCatheter AblationEquipment DesignModels, AnimalSwineJournal Article

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Susumu Ishikawa, Shigeru Oki, Masato Muraoka, Kenji Kashiwabara, Yasuo Morishita. 2005. Support adapter for radiofrequency ablation probe: experimental study.. https://doi.org/10.1111/j.1445-2197.2005.03329.x

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