METHOD AND DEVICE FOR DETERMINING SUFFICIENCY OF ABLATION EFFECT ON BIOLOGICAL TISSUES Russian patent published in 2024 - IPC A61B18/12 

FIELD: medicine.

SUBSTANCE: method of determining sufficiency of ablation effect on biological tissues involves illumination of tissue subjected to ablation effect with light energy. Ablated tissues are illuminated with broadband light in the visible range. Intensity and spectral characteristic of the optical signal backscattered from the ablation region is measured in real time. Intensity and spectral characteristics of the signal are compared by normalizing the current characteristic with respect to the base characteristic obtained before the beginning of the ablation exposure. In case of abrupt change of normalized intensity and spectral characteristic of optical signal back-scattered from the area of ablation effect in relation to base characteristic, ablation effect is stopped. Device for implementing the method comprises a light energy source, a light guide connected to a light energy source configured to output the light energy to the ablative effect area and receive the optical signal backscattered from the ablation effect area, and means for measuring backscattered from the ablation effect area of the optical signal. Light energy source used is broadband light source of visible range, and a device for measuring spectral and photometric values is used as a measuring device for the optical signal backscattered from the ablation effect region.

EFFECT: group of inventions enables to expand the range of tools for determining and assessing the degree of ablation effect during catheter operations and provide control during minimally invasive catheter interventions in various fields of medicine.

7 cl, 1 dwg