The saline solution and cellular fluids play the role of an electrical conductor in the space between the active and passive electrodes. RF energy excites sodium molecules and creates a highly concentrated, ionized field that appears as bright orange light. Ionized particles have sufficient energy to break organic molecule bonds, thus enabling tissue cutting and coagulation at low temperatures (40-70°C). “Coblation” or “Controlled Cutting” is a process developed for the excision and removal of soft tissue.
The Coblator System is designed to deliver RF energy to the electrode elements located at the distal end of sterile and once-used probes. The current passing between the electrode element and the incident electrode provides a local energy field. As a result of this arrangement, energy with minimal damage to the surrounding tissue is provided. In other systems, which we call monopolar, there is only one active electrode at the device end. The current passes from the active electrode through the patient's body to the return pad attached to the patient's body. This causes significantly more energy to pass through the patient's body and surrounding tissue.
The Coblator System works by passing RF energy through a conductive liquid (such as normal saline) that is close to or in contact with the tissue to be treated. The conductive liquid forms a thin layer between the active and return electrode elements. In coblate mode, when sufficient energy is applied, the conductive liquid turns into a vapor layer (plasma) containing energized particles. When high-energy charged particles come into contact with the tissue, it causes the tissue to disintegrate by disintegration of the molecules.
Compared to conventional electrosurgery methods, this type of operation causes a relatively lower temperature in the treated area, thus, the surrounding area without treatment. collateral thermal damage is limited. The function of the device is different when low voltage is applied between the active electrode(s) and the target tissue. In this case, the electric field is below the limit required for plasma layer formation, and resistive tissue heat occurs.
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