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Apparatus and method for monitoring early formation of steam pop during ablation
专利权人:
发明人:
Chad Allen Lieber,Ariel Garcia,Shiva Sharareh
申请号:
US14137681
公开号:
US09375251B2
申请日:
2013.12.20
申请国别(地区):
US
年份:
2016
代理人:
摘要:
A system for measuring real-time tissue reflection spectral characteristics during ablation includes a catheter for collecting light reflected from tissue undergoing ablation, a detection component for separating constituent wavelengths of the collected light, a quantification apparatus for generating measured light intensity data of the collected light, and a processor for analyzing the data in relation to time. A method for monitoring formation of steam pop during ablation includes delivering light to tissue, delivering ablative energy to the tissue, measuring the reflectance spectral intensity of the tissue, and observing whether the measured reflectance spectral instensity (MRSI) initially increases in a specified time period followed by a decrease at a specified rate. If the MRSI does not decrease, delivery of ablation energy continues. If the MRSI decreases within the specified time at the specified rate, formation of a steam pocket is inferred and delivery of ablative energy is decreased or discontinued.
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