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