Internally cooled ceramic element for a microwave ablation emitter

DE602020051572T2Active Publication Date: 2025-05-21COVIDIEN LP
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Patent Information

Application Number
DE602020051572
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-02-06
Filing Date
2020-02-04
Publication Date
2025-05-21
Estimated Expiration
2040-02-04

AI Technical Summary

Technical Problem

Conventional ceramic-loaded microwave ablation radiators do not effectively cool the ceramic element from within, leading to a drop in dielectric constant and destabilization of energy patterns due to temperature increases, which can cause wavelength elongation and unpredictable heating patterns.

Method used

Incorporating internal channels within the ceramic element for fluid flow or solid thermal conductors to cool the ceramic, maintaining a stable dielectric constant and energy pattern by reducing temperature increases, thereby stabilizing the microwave energy distribution.

Benefits of technology

The internal cooling mechanism ensures a predictable energy pattern and minimizes damage to healthy tissue by maintaining a stable dielectric constant, enhancing the precision of tumor ablation while reducing thermal conduction to surrounding tissues.

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Abstract

A microwave antenna for ablating tissue in a patient includes a radiator configured to radiate microwave radiation. A cable is coupled to the radiator and includes a fluid inflow line and a fluid outflow line. The microwave antenna also includes a ceramic element coaxially disposed around the radiator. The ceramic element includes at least one internal channel configured to transport thermal energy away from the ceramic element.
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