ACMI Vista CTR Generator
Introducing the ACMI Vista CTR Generator. Designed to provide electrical waveforms to coagulate blood vessels and cut tissues smoothly.
ACMI Vista CTR Generator Specifications
ACMI Vista CTR Generator features CUT and COAGULATION modes.
- Dimensions: 16″ W x 16″ D x 5″ H
- Weight: 21 lbs
- Fuse: T6.3A 250 V
- Output Power: 360 W @ 250 Ohm
- Operating Frequency: 100 kHz
- Input Power: 100 – 240 V | 50 – 60 Hz | 6.3 A max
Principles of Electrosurgery
Often “electrocautery” is used to describe electrosurgery. This is incorrect. Electrocautery refers to direct current (electrons flowing in one direction), whereas electrosurgery uses alternating current. Modern day electrosurgery is the utilization of alternating current at radiofrequency levels. During electrocautery, current does not enter the patient’s body. Only the heated wire comes in contact with tissue. In electrosurgery, the patient is included in the circuit and current enters the patient’s body.
Electrical current flows when electrons from one atom move to an adjacent atom through a circuit. Heat is produced when electrons encounter resistance. For current to flow, a continuous circuit is needed. In the operating room, the circuit is composed of the patient, the electrosurgical generator, the active electrode and the return electrodes. The electrosurgical unit is the source of the voltage.
Electrical energy is converted to heat in tissue as the tissue resists the flow of current from the electrode. Three tissue effects are possible with today’s electrosurgical units – cutting, desiccation, and fulguration. Achieving these effects depends on the following factors: current density, time, electrode size, tissue conductivity, and current waveform.