Análise da energia utilizada por bisturi elétrico na ablação de tecido orgânico

• Ano de defesa: 2014
• Autor(a) principal: Grande, Karin Cristine
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Tecnológica Federal do Paraná; Curitiba; Programa de Pós-Graduação em Engenharia Biomédica
• Palavras-chave em Português: Faiscas elétricas; Descargas elétricas - Medição; Correntes contínuas; Queimaduras - Prevenção; Instrumentos e aparelhos cirúrgicos; Métodos de simulação; Engenharia biomédica; Electric spark; Electric discharges - Measurement; Electric currents, Direct; Burns and scalds - Prevention; Surgical instruments and apparatus; Simulation methods; Biomedical engineering
• Link de acesso: http://repositorio.utfpr.edu.br/jspui/handle/1/1150

Electrosurgery is a surgical technique that uses an electrosurgical device for cutting, drying (desiccation), and coagulation of organic tissue, thereby reducing the risk of bleeding. Electrosurgical device uses sparking phenomena for this purpose. This process causes heating of intracellular water and, consequently, the rupture of the cell in the organic tissue. Although the amount of energy delivered by the electrosurgical device is easy to know, little is known about the exactly amount of energy involved in the various phenomena of electrosurgical procedure, especially in cutting, where cells suffer ablation by vaporization Based on this was developed this research, which objective is to determine the energy required for the electrosurgical cutting through the electrical parameters involved and the energy used for the vaporization of water of organic tissue. The method developed was corted in three experiments, with a series of specific tests in each. It has been show that only about 10% of total energy is used for cutting, or specifically, for the vaporization of water of organic tissue. The rest of the energy is used in other processes that need more investigation to be understood.