User manual

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Thecontentsandtheaimofthemeasurements

High-frequency electrosurgery provides means for fine and accurate surgical

interventions on vascular tissues. Using this method prevents undesirable extensive damage to

the surrounding tissue. To achieve the best possible results, it is necessary to work with the

unit’s performance set-up as gently as possible. The task demonstrates using ESU with the

help of a specialized tester, the operation of which is based on measuring the working current

and supplied delivery. The aim of this task, therefore, will be to learn about and verify the

principle of the apparatus’ operation, to measure its functions by means of the tester, to find

out operation characteristics and current dependencies.

Measurementtasks

Prior to the actual measurement, become acquainted with the operation and the parts of the

electrosurgical apparatus (SMT BM CLINIC 170W, [5]) and of the analyzer of electrosurgical

devices (RF 303, [6]). Suggest and consult with the trainer all the measurement schemes and

connection of the individual apparatus. Work with the operation manuals [5, 6] available on

the subject’s website.

Measure the output power in dependence on the size of the load resistance by means

of the tester (RF 303) for monopolar and bipolar modes and for all the four functions.

Measure the passing current during section and coagulation by means of the tester (RF

303), for monopolar and bipolar modes at different ohmic load sizes.

Use the tester (RF 303) to measure the leakage currents by the applied part.

Elaborate a protocolar record on the carried out measurements and the safety-technical

check of the electrosurgical apparatus.

Measurementprocedure

To accomplish all the aims of this task, it is necessary to first become acquainted with

the operation of the electrosurgical generator, the electrosurgical apparatus’ tester, and the

electrical safety tester. First, learn how to connect the necessary accessories to the apparatus,

such as the foot switch, the neutral electrode and the active electrode applicator. (See Fig. 7.1

and 7.2). Become acquainted with the activation principle of this electrosurgical unit [7.5].

Further on, study the principle of the RF 303 tester operation, the means for connecting ESU