Electrosurgical unit
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Transcript of Electrosurgical unit
Electrosurgical Unit
Presented By:Prasad vagalShraddha Khatavkar
Electrosurgical unit
PrincipleElectro surgery is the application of
a high-frequency electric current to biological tissue as a means to cut, coagulate, desiccate, or fulgurate tissue.
Electrosurgical devices are frequently used during surgical operations helping to prevent blood loss in hospital operating rooms or in out patient procedures.
Principle of surgical diathermy
Types of electrosurgical technique1. Electro-surgical coagulation2. Fulguration3. Desiccation4. Electrotomy
Waveforms
Block Diagram of ESU
Types of ESU
• Monopolar technique• Bipolar technique
Mono-Polar Technique(flow of current)
•Active Electrode tip
•Patient
•Neural Electrode
•Generator
Mono-polar Technique
Bipolar Technique
Types of electrodes for cutting
• Needle electrode• Angulated lancet electrode• Angulated band loop electrode• Wire loop electrode• Straight lancet electrode
MODESThe device has several
modes:• Cut mode—Pure sine
wave, for cutting with the least coagulation.
• Coag mode—Pulsed sine wave, low-duty cycle, for coagulating bleeding tissue.
• Blend 1 mode—Modulated sine wave, for coagulating as the tissue is cut.
• Blend 2 mode—Modulated sine wave, for coagulating as the tissue
is cut.
Safety aspects in electro surgical unit
i. Burnsii. High frequency currentiii. Explosion hazards
Staff safety Avoid contact with the neutral electrodeWhen applying current, always be sure to wear
gloves and touch the equipment or patient body with the entire palm of the hand, not with a single finger.
Electrosurgical equipment needs to be grounded in order to minimize interference with video endoscopic systems.
Smoke generated during electrosurgical procedures can be irritating and potentially harmful to personnel; surgical masks and adequate ventilation of smoke may be useful
Advantages over other techniques• The laser is less efficient, less
powerful, more costly, more bulky in the operating room and less understood due to a smaller case history data base work to discourage its use in many cases.
So much depends upon the skill of the surgeon in the use of any surgical knife, that the selection is often a professional judgment.
Thank you !!!
Bibliography
a. Iambiomedb. R S Khandpurc. Wikipedia