Electrosurgery Devices, Electrodes & Accessories
HF devices use high-frequency alternating current to cause a thermal effect in the tissue, which is used to cut and coagulate tissue. At Praxisdienst, you will find a selection of electrosurgical units and suitable HF electrodes at affordable prices. Learn more about electrosurgical units
Electrosurgical Equipment to Coagulate Tissue
Electrosurgical units (ESU), diathermy machines, high-frequency surgery units or electrosurgery units make use of the effect that high-frequency alternating current has on tissue. In high-frequency surgery (HF), medical professionals use frequencies between 300 kHz and 4 MHz, since currents in this frequency range have a thermal effect on the tissue. This effect is caused by the conversion of electrical energy into thermal energy and is used for cutting and coagulation of tissue.
In order to use efficiently use this effect, the machine is connected to special electrosurgical electrodes. These electrodes vary in shape and size, depending on their application. There is, for example, a difference between ball electrodes, needle electrodes and loop electrodes.
Cutting with Electrosurgery Units
In order to cut through tissue, a surgical diathermy machine rapidly heats the tissue fluid, which results in explosive vapour pressure that causes the cell walls and tissue to tear apart. Cutting with an electrosurgical unit offers many advantages; it prevents bleeding and germ transfer and the tissue is mechanically protected.
Coagulation with the Diathermy Machine
During surgical diathermy, tissue is boiled away, so to speak. The slow heating process shrinks the tissue and the existing tissue fluid is thickened or evaporated. This effect comes in handy when closing smaller vessels during surgical procedures and is particularly effective when treating spider veins and haemangiomas.
For monopolar diathermy, you need two electrodes; one neutral electrode (return electrode) with large contact surface and one active electrode with small surface. Over the active electrode, the electric current passes into the patient's body and causes the desired thermal effect. The return electrode diverts the electricity from the patient and prevents burns due to the low current density. For smaller monopolar procedures, we recommend the MD | RF Device with 50 Watt output. The surgical generator with 4 frequency types is ideal for use in dermatology, dentistry, ENT and veterinary medicine.
The bipolar mode does not require the use of separate neutral electrodes. The instrument connected to the electrosurgical generator combines active and return electrodes. This is, for example, the case with bipolar forceps, where one arm is the active and one arm is the return electrode. The electric current passes from one electrode, through the treated tissue, to the other. The use of such bipolar instruments offers many advantages, which makes them particularly popular for use in neurology. The MD III Electrosurgical Unit, for example, can be used for both monopolar and bipolar operations. At the push of a button, you may choose between various cut modes and coagulation modes that can be used with different, separately available instrument sets..
The Difference between Cautery and Electrosurgical Units
In contrast to diothermy, in which a thermal tissue reaction is caused by converting the alternating current into thermal energy with help of the electrical tissue resistance, electrocautery instruments are directly heated by the current. The heat is transferred to the tissue via the tip of the instrument, which means that no current flows into the tissue. However, this method is only used when the surgeon must avoid any current flowing through the patient's body during the surgical procedure.
Conveniently order Diathermy and Electrosurgical Equipment at Praxisdienst
With Praxisdienst, you will find an assortment of generators, instruments and forceps for bipolar and monopolar procedures. Additionally, we offer you surgery, dermatology and dentistry sets that contain the suitable surgical instruments as well as handles, cables and other supplies. Our electrosurgery generators are versatile and easy to operate.
You have any questions about our units or want to order additional accessories such as bipolar forceps? Our customer service will help! You can contact us per telephone, live chat or e-mail.