In this paper the development of a complementary module for the WESST - OT simulator is presented. The module allows the interchange of surgical instruments used in a nasal sinus surgery. This module was developed taking into account that in the original simulator it was possible to interact only with an endoscope and that the nasal sinus surgery requires more surgical instruments such as the Blakesley and Kerrison forceps, useful to support other techniques in addition to the orientation skill.En este artículo se presentan los resultados del desarrollo de un módulo complementario que permite el intercambio de instrumentos quirúrgicos a ser utilizados en una cirugía de senos paranasales, al simulador de otorrinolaringología WESST-OT (Web En...