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HFE-200 Series Electrosurgical Units by Nadiya-4
The Nadiya-4 HFE-200 series includes high-frequency electrosurgical units for cutting, coagulation and, in the 200RK/DFS model, bipolar sealing of soft tissues and blood vessels. Depending on the version, the equipment operates at 0.44 MHz, 1.76 MHz, or supports both frequencies.
The model range includes the basic HFE-200, the HFE-200RW radio-wave version, and the advanced HFE-200RK/DFS model with touch-screen control, programmable profiles, an expanded range of monopolar and bipolar modes, and a vessel-sealing function for vessels with a diameter of 2–5 mm.
HFE-200 Model Range
The three units in the series differ in operating frequency, control method, and available modes. The basic HFE-200 and HFE-200RW models have four principal modes, while the 200RK/DFS combines two operating frequencies, a touch-screen interface, and expanded cutting, coagulation, and sealing functions.
| Model | Operating frequency | Maximum output power | Controls | Main capabilities |
|---|---|---|---|---|
| HFE-200 | 0.44 MHz | Cutting — up to 200 W; coagulation — up to 120 W |
Buttons and digital displays | Pure and blended cutting, monopolar and bipolar coagulation |
| HFE-200RW | 1.76 MHz | Cutting — up to 200 W; coagulation — up to 120 W |
Buttons and digital displays | Radio-wave version with four principal modes |
| HFE-200RK/DFS | 0.44 and 1.76 MHz | Up to 200 W depending on the mode | Touch-screen monitor | Expanded monopolar and bipolar modes, profiles, vessel sealing for vessels 2–5 mm in diameter |
HFE-200 and HFE-200RW: Main Operating Modes
The basic HFE-200 and radio-wave HFE-200RW provide the same four types of electrosurgical effect. They differ in the fundamental HF-signal frequency and the optimum load for each mode.
| Mode | Application | Maximum output power | HFE-200: load | HFE-200RW: load |
|---|---|---|---|---|
| CUT-1 | Monopolar pure cutting | 200 W | 200 ohms | 500 ohms |
| CUT-2 | Monopolar blended cutting | 200 W | 100 ohms | 200 ohms |
| COAG-M | Monopolar coagulation | 120 W | 50 ohms | 100 ohms |
| COAG-B | Bipolar coagulation | 120 W | 50 ohms | 100 ohms |
In the HFE-200, the fundamental HF-signal frequency is 440 kHz, while in the HFE-200RW it is 1.76 MHz. In both units, the blended-cut mode uses amplitude-pulse modulation at a frequency of 22 ± 2.2 kHz.
HFE-200RK/DFS: Touch-Screen Control and Expanded Modes
HFE-200RK/DFS is the most advanced model in the series. It operates at 440 and 1760 kHz and supports monopolar and bipolar cutting, several coagulation options, fulguration, and bipolar sealing of tissues and blood vessels.
Key Features of the 200RK/DFS
- touch-screen monitor displaying modes, power settings, and system messages;
- operating frequencies of 0.44 and 1.76 MHz;
- monopolar and bipolar cutting;
- deep, contact, and superficial coagulation;
- spray coagulation, or fulguration;
- bipolar sealing of vessels with a diameter of 2–5 mm;
- programmable operating profiles;
- access password and automatic HF-power shut-off after a preset time.
HFE-200RK/DFS Operating Modes
| Application | Mode | Frequency | Optimum load | Power range |
|---|---|---|---|---|
| Monopolar cutting | Cutting | 440 kHz | 500 ohms | 5–200 W |
| RW cutting | 1760 kHz | 500 ohms | 5–200 W | |
| Blended cutting | 440 kHz | 500 ohms | 5–150 W | |
| RW blended cutting | 1760 kHz | 500 ohms | 5–150 W | |
| Bipolar cutting | Cutting | 440 kHz | 100 ohms | 5–200 W |
| Monopolar coagulation | Deep coagulation | 440 kHz | 100 ohms | 5–150 W |
| Contact coagulation | 440 kHz | 500 ohms | 5–120 W | |
| RW rapid superficial coagulation | 1760 kHz | 100 ohms | 5–120 W | |
| Spray coagulation (fulguration) | 1760 kHz | 500 ohms | 5–60 W | |
| Bipolar application | Sealing | 440 kHz | 20 ohms | 5–200 W |
| Deep coagulation | 440 kHz | 100 ohms | 5–120 W | |
| Rapid superficial coagulation | 1760 kHz | 100 ohms | 5–120 W |
How to Select an HFE-200 Series Unit
Selection should take into account not only maximum output power but also the required operating frequency, modes, control method, and compatible instruments.
- HFE-200 is suitable when four basic modes at 0.44 MHz are required: pure and blended cutting, monopolar coagulation, and bipolar coagulation.
- HFE-200RW provides the same basic set of modes and maximum power ratings but operates at 1.76 MHz.
- HFE-200RK/DFS is intended for applications requiring two operating frequencies, touch-screen control, bipolar cutting, expanded coagulation modes, programmable profiles, and vessel sealing.
A higher operating frequency or a larger number of modes does not mean that one model is universally better for every procedure. The equipment should be selected according to the planned application, the instructions for use, and the specialist’s experience.
Monopolar and Bipolar Applications
Monopolar modes use an active surgical instrument and a passive, or neutral, electrode. Because the active electrode has a smaller surface area, the highest current density is created at the tissue contact area where cutting or coagulation takes place.
In bipolar modes, the current passes between the two working parts of forceps, a clamp, or another compatible bipolar instrument. The effect is localised in the tissue held between the working parts.
The 200RK/DFS additionally supports bipolar cutting and sealing. A compatible instrument must be used for each specific mode, and the requirements of the official instructions must be followed.
Controls, Indication, and Safety
The HFE-200 and HFE-200RW have separate buttons and digital displays for adjusting cutting and coagulation. A two-pedal footswitch allows the selected mode to be activated hands-free: the yellow pedal controls cutting, while the blue pedal controls coagulation.
In the 200RK/DFS, modes, power settings, operating profiles, and system messages are displayed on a touch-screen monitor. The unit monitors the integrity of the passive-electrode circuit, can automatically stop power delivery after a preset time, and blocks the HF output if critical parameter deviations occur.
All models in the series provide visual and audible indication, output-voltage and current limitation, a Type BF applied part, and protection against the effects of defibrillator discharges.
Applications of the HFE-200 Series
High-frequency electrosurgery is used in various areas of human and veterinary medicine. Depending on the selected model, modes, instruments, and approved methods, HFE-200 series units may be used in:
- general, abdominal, and thoracic surgery;
- gynaecology and urology;
- coloproctology;
- vascular and endocrine surgery;
- breast surgery and oncology;
- dentistry and maxillofacial surgery;
- otorhinolaryngology;
- plastic and cosmetic surgery;
- video-assisted endoscopic surgery and laparoscopy;
- veterinary surgery.
The specific model and mode should be selected according to the planned procedure, staff qualifications, and the manufacturer’s official documentation.
Instruments and Standard Configuration
HFE-200 series units are used with monopolar and bipolar electrosurgical instruments. Depending on the current configuration, the supply package may include:
- electronic unit;
- two-pedal footswitch;
- passive, or neutral, electrode;
- holder for Ø 2.0 mm monopolar electrodes;
- bipolar forceps holder;
- straight bipolar forceps, 200 mm;
- straight and curved knife electrodes;
- instructions for use;
- packaging.
The exact package contents should be confirmed on the product page, in the invoice, or in the specification. Additional forceps, clamps, electrodes, footswitches, cables, holders, and adapters are available in the “Electrosurgical Instruments” section.
Classification and Operating Conditions
The units are Class II devices with a Type BF applied part and belong to risk class IIb. The electronic unit has an IP24 enclosure protection rating, while the footswitch is rated IPX7.
The equipment operates in intermittent-duty mode: up to 10 seconds of high-frequency current delivery followed by a 30-second pause. The maximum operating time while observing this cycle is up to 8 hours. The intended service life is at least five years.
Before first use, personnel must read the official instructions for the selected model. The documents are available on the product pages and in the “Instructions” section.
Warranty, Service, and Dispatch
Nadiya-4 electrosurgical units are supplied with a standard 12-month manufacturer’s warranty. Post-warranty maintenance, diagnostics, and equipment repair are also available.
In-stock products are dispatched within 1–3 business days after payment has been received and the order has been confirmed. Detailed terms are available on the “Warranty and Service” and “Payment and Delivery” pages.
Frequently Asked Questions About the HFE-200 Series
What is the difference between HFE-200, HFE-200RW, and HFE-200RK/DFS?
HFE-200 operates at 0.44 MHz, while HFE-200RW operates at 1.76 MHz. Both models have four main modes and cutting power of up to 200 W. HFE-200RK/DFS supports both frequencies, touch-screen control, an expanded range of modes, programmable profiles, and vessel sealing.
What is the maximum output power of the HFE-200 series?
HFE-200 and HFE-200RW provide up to 200 W in cutting modes and up to 120 W in coagulation modes. The 200RK/DFS provides up to 200 W depending on the selected mode.
Which model supports vessel sealing?
The bipolar sealing function is available in the HFE-200RK/DFS. The product page specifies sealing of vessels with a diameter of 2–5 mm. A compatible bipolar instrument is required.
Does the HFE-200RK/DFS have touch-screen control?
Yes. The model has a touch-screen monitor displaying modes, power levels, the profile number, and system messages. Settings can be saved in programmable profiles.
Do the units support monopolar and bipolar modes?
Yes. All three models support monopolar applications and bipolar coagulation. The HFE-200RK/DFS additionally supports bipolar cutting and sealing.
Can instruments for the HFE-200 be purchased separately?
Yes. Monopolar electrodes, bipolar forceps and clamps, passive electrodes, holders, footswitches, cables, and adapters are available separately. Their compatibility with the specific model and mode should be checked before ordering.
Buy an HFE-200 Nadiya-4 Electrosurgical Unit
The Nadiya-4.com catalogue offers the basic HFE-200, the HFE-200RW radio-wave version, and the advanced HFE-200RK/DFS model with touch-screen control and vessel sealing.
Contact our specialists to compare the models, confirm the current configuration, check instrument compatibility, and select a unit for the needs of your facility.