Factors que modifiquen els efectes del teixit electroquirúrgic
Forma d'ona
Electrosurgical generators produce different electrical waveforms with distinct tissue effects. A continuous sinusoidal waveform with a high current and low voltage causes a rapid rise in tissue temperature to more than 100°C, which vaporises or cuts tissue with minimal coagulation. An interrupted waveform with a low current and high voltage causes a slow increase in temperature to less than 100°C, which desiccates and coagulates tissue. These two waveforms are inaccurately known as 'cut' (yellow-coded) and 'coagulation' (blue-coded) modes, respectively. Blend waveform is a modulated cut waveform with a variable duty cycle, current and voltage (Table 1). The blend mode can vary the duty cycle and the rate of temperature rise to produce variable degrees of cutting and coagulation (haemostasis). The rate of heat produced in the tissue is what makes a waveform cut or coagulate. Rapidly increasing temperature (>100 graus) produeix un efecte de tall, mentre que la temperatura augmenta lentament (<100°c) produces="" coagulation="" and="" desiccation="" effects.="" any="" of="" the="" above="" waveforms="" can="" produce="" both="" effects="" (cutting="" and="" coagulation)="" by="" modifying="" other="" factors="" that="" impact="" tissue="" effect;="" hence="" 'cut'="" and="" 'coagulation'="" modes="" are="" misnomers.="" they="" are="" better="" referred="" to="" as="" 'continuous="" low-voltage'="" and="" 'interrupted="" high-voltage',="" respectively,="" with="" the="" blend="" waveform="" referred="" to="" as="" 'interrupted="">
Jinhua Huacheng Medical Appliance Co., Ltd.
Manufactuer of disposable medical products: Llapis electroquirúrgic, placa de connexió a terra, grapadora de pell i elèctrode ECG
