This paper is devoted to mathematical modelling of thermal processes in the polyp-colon system during electrosurgical polypectomy. This medical surgery (colonoscopy) is used to remove abnormal growths from the colon (the large intestine) in order to reduce the risk of the colon cancer development.In the electrosurgical polypectomy procedure, a polypectomy snare is passed over the polyp and tightened around the stalk of the polyp. Electric current is then passed for a few seconds through the snare loop to cut off the polyp stalk from the colon wall. The differential equations describing the processes occurring during polypectomy have been proposed. Also, examples of numerical calculations have been presented. Simulation results depending on the geometry (size) of the polyp can be useful for the endoscopist to choice the optimal time and parametrics of the electric current flow by tissues during the endoscopy procedure.

本文致力于电外科息肉切除术中息肉-结肠系统中热过程的数学建模。这种外科手术（结肠镜检查）用于去除结肠（大肠）的异常生长，以减少发生结肠癌的风险。在电外科息肉切除术过程中，将息肉切除网套通过息肉并在息肉周围收紧。息肉的茎。然后，电流通过圈套器环路几秒钟，从结肠壁上切断息肉茎。已经提出了描述息肉切除过程中发生的过程的微分方程。而且，已经提出了数值计算的例子。