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SOLID STATE ELECTROSURGICAL UNIT

SOLID STATE ELECTROSURGICAL UNIT. MAHMOUD M.ZIAD ABU-JBARA 200310411. OUTLINE. INTRODUCTION DESCRIPTION DEVICE DESCRIPTION MAINTENANCE MADICAL APPLICATION. INTRODUCTION.

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SOLID STATE ELECTROSURGICAL UNIT

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  1. SOLID STATE ELECTROSURGICAL UNIT MAHMOUD M.ZIAD ABU-JBARA 200310411

  2. OUTLINE INTRODUCTION DESCRIPTION DEVICE DESCRIPTION MAINTENANCE MADICAL APPLICATION

  3. INTRODUCTION • The electrosurgery machine produces high radiofrequency energy sufficient to induce cutting and/or coagulation in body tissues by an electrode during (electro) surgery • Although RF Electrosurgery is reportedly used in over 70% of all medical procedures performed each year, it remains one of the least understood devices in the operating room

  4. DESCRIPTION • This is multipurpose Electrosurgical unit, ideally suitable for cutting and coagulation with a high degree of Precision. It is a small, compact light weight unit and easy to handle. Our patient safety, the patient is protect by a sentry circuit that cuts off out put automatically also the patient output circuit is isolated from the power circuit.

  5. DEVICE Description • An electrosurgical unit for producing a modulated oscillating signal for coagulation procedures and an unmodulated oscillating signal for cutting procedures. The unit includes a four arm bridge rectifier interconnected directly to the line voltage. A first pair of opposing diagonal terminals on the rectifier is connected directly to the line voltage.

  6. A cutting signal is obtained from the other pair of diagonal terminals, and a coagulation signal is obtained across one arm of the bridge rectifier. An oscillator tank coil provides the necessary RF isolation output. A switch selectively interconnects either the coagulation signal output from the bridge rectifier, or the cutting signal output from the bridge rectifier, to the oscillator.

  7. The output is taken across the tank circuit from the RF oscillator and applied to a patient through a handpiece. Through the use of high voltage transistors in the circuit, high efficiency is obtained by eliminating the input transformer of the prior art

  8. Maintenance • Most maintenance on the electrosurgery power unit is generally performed by trained biomedical equipment technicians or biomedical engineers unless nursing staffers are adequately trained. The electrodes, however, must be cleansed and sterilized by the staff immediately following each surgery if they are not disposable.

  9. Medical Application • ESU’s are used for surgical cutting or to control bleeding by causing • coagulation (hemostasis) at the surgical site. They deliver high-frequency • electrical currents and voltages through an active electrode, causing desiccation, • vaporization, or charring of the target tissue. • ESU’s are a useful tool in all aspects of the surgical arena: from the most • basic wart removal, spider veins, or hair removal in a doctor’s office; to the

  10. most intricate open heart, orthopedic, and transplant procedures. • An ESU, by definition, is a generator capable of producing a cutting and/or • coagulating clinical effect on tissue by the use of alternating current at a high frequency (RF - radio frequency, also known as radio surgery). Voltages and • currents may vary depending on the desired clinical effect.

  11. THANK YOU

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