Modeling intracavitary heating of the uterus by means of a balloon catheter

Johan Olsrud; Britt Friberg; Juan Rioseco; Mats Ahlgren; Bertil R. R. Persson

doi:10.1117/12.335802

4 January 1999 Modeling intracavitary heating of the uterus by means of a balloon catheter

Johan Olsrud, Britt Friberg, Juan Rioseco, Mats Ahlgren, Bertil R. R. Persson

Proceedings Volume 3565, Thermal Therapy, Laser Welding, and Tissue Interaction; (1999) https://doi.org/10.1117/12.335802
Event: BiOS Europe '98, 1998, Stockholm, Sweden

Abstract

Balloon thermal endometrial destruction (TED) is a recently developed method to treat heavy menstrual bleeding (menorrhagia). Numerical simulations of this treatment by use of the finite element method were performed. The mechanical deformation and the resulting stress distribution when a balloon catheter is expanded within the uterine cavity was estimated from structural analysis. Thermal analysis was then performed to estimate the depth of tissue coagulation (temperature > 55 degree(s)C) in the uterus during TED. The estimated depth of coagulation, after 30 min heating with an intracavity temperature of 75 degree(s)C, was approximately 9 mm when blood flow was disregarded. With uniform normal blood flow, the depth of coagulation decreased to 3 - 4 mm. Simulations with varying intracavity temperatures and blood flow rates showed that both parameters should be of major importance to the depth of coagulation. The influence of blood flow was less when the pressure due to the balloon was also considered (5 - 6 mm coagulation depth with normal blood flow).

Citation Download Citation

Johan Olsrud, Britt Friberg, Juan Rioseco, Mats Ahlgren, and Bertil R. R. Persson "Modeling intracavitary heating of the uterus by means of a balloon catheter", Proc. SPIE 3565, Thermal Therapy, Laser Welding, and Tissue Interaction, (4 January 1999); https://doi.org/10.1117/12.335802

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