High-Frequency Electrosurgical Unit HFE-200RW "Nadiya-4"

The unit is designed for cutting and coagulating soft tissues and blood vessels using high-frequency current in a non-anesthetic environment during surgical procedures in hospitals and clinics.

It is intended for operation in specially equipped rooms at ambient temperatures ranging from 10°C to 35°C and relative humidity up to 80% at 25°C.

Operating Principle

This device serves as a source of high-frequency current. The HF voltage is supplied to active and passive (monopolar) electrodes or a bipolar forceps and is directed to the tissues of the operated patient. The electrosurgical effect of cutting and coagulation is based on generating a sufficiently high degree of heating in biological tissues via a narrow stream of HF current at the contact point of the active electrode or between the tips of the bipolar forceps. When using monopolar electrodes (CUT-1, CUT-2, COAG-M modes), the active electrode is significantly smaller than the passive one, resulting in much higher current density near the active electrode — and thus, greater tissue heating. At a sufficient power level, tissue fluid vaporizes and causes cell rupture — resulting in a cutting effect. In bipolar mode (COAG-B), both electrodes are active, of equal size, and placed close to each other. HF voltage applied between them heats the tissue, and at a certain temperature, protein coagulation occurs.

Technical Specifications and Additional Features

The unit supports standby, cutting, and coagulation operation modes, including the following:

Cutting modes:

• CUT-1 – Monopolar mode, continuous HF wave after generator activation
• CUT-2 – Monopolar mode, amplitude-pulse modulated HF wave

Coagulation modes:

• COAG-M – Monopolar mode, continuous HF wave after activation
• COAG-B – Bipolar mode, continuous HF wave after activation

The output power in all modes is discretely adjustable from minimum to maximum.

The unit also provides:

• Open-circuit and short-circuit operation at any output power level
• Visual indicators:
  • Power supply – green indicator
  • Selected mode: CUT – yellow indicator on a yellow background; COAG – yellow indicator on a blue background
  • Relative output power level – red indicator on either yellow or blue depending on the mode
  • Passive electrode disconnection – red "Err PE" message on the output level indicators
• Audible alerts:
  • Continuous tone for CUT mode; single intermittent tone for COAG mode
  • Double intermittent tone when the passive electrode cable is disconnected
• 8-hour continuous operation at maximum output power in intermittent mode (10 sec active / 30 sec pause)
• Maximum 8 hours of being constantly powered on

The unit is protected against defibrillator discharges.

Configuration and Delivery Set

• Electronic unit ААОХ.941612.003СБ
• Footswitch ААОХ.642139.001
• Passive electrode
• Monopolar electrode holder
• Set of monopolar electrodes
• Bipolar electrode holder
• Bipolar forceps
• User manual ААОХ.941612.003ПС
• Protective packaging ААОХ.305636.001

Device Design

The unit consists of two main components – the electronic unit and the footswitch.

Front Panel of the Electronic Unit

• 1. Manufacturer’s trademark
• 2. Model name
• 3. CUT-2 mode indicator – blend
• 4. CUT-1 mode indicator – cutting
• 5. Digital output power indicator (CUT mode)
• 6. COAG-B mode indicator – bipolar coagulation
• 7. COAG-M mode indicator – monopolar coagulation
• 8. Digital output power indicator (COAG mode)
• 9. Increase power (COAG mode)
• 10. Decrease power (COAG mode)
• 11. Bipolar forceps cable connector
• 12. Mode switch (COAG)
• 13. Increase power (CUT mode)
• 14. Active electrode holder connector
• 15. Decrease power (CUT mode)
• 16. Operating area symbol
• 17. Passive electrode connector
• 18. Mode switch (CUT)
• 19. BF type device symbol with defibrillator protection
• 20. Power switch

Rear Panel of the Electronic Unit

• 21. Footswitch connector
• 22. Class II electrical safety symbol
• 23. Power cable

The electronic unit is housed in a plastic enclosure consisting of top and bottom covers, as well as front and rear panels. The front panel includes the following controls and indicators:

• Main power toggle and indicator (“POWER”) – position 20
• Buttons 12 and 18 for switching operation modes, with corresponding indicators (positions 3, 4, 6, 7) for CUT-1, CUT-2, COAG-M, COAG-B
• Buttons 9, 10, 13, 15 for adjusting output power; indicators 5 and 8 display current output levels
• Connector "PAS" (17) – for passive electrode cable
• Connector "ACT" (14) – for active electrode holder
• Connector "BI" (11) – for bipolar forceps holder

The rear panel includes power cable (23) and footswitch connector “PEDAL” (21) for 220V/50Hz mains connection.

Footswitch
a) Top View 1. Cable for connecting footswitch to the unit 2. CUT mode activation pedal 3. COAG mode activation pedal	b) Bottom View 4. Protection class code symbol (IPX7)

The footswitch is floor-mounted, featuring two spring-loaded platforms: left (2) for CUT and right (3) for COAG. Pressing a pedal with the foot activates the respective mode; releasing it deactivates the mode. Connection is made using a dedicated cable.

High-Frequency Electrosurgical Unit HFE-200RW Nadiya-4: Applications and Features

Electrosurgical units like the electrocoagulators are now standard tools. However, the HFE-200RW units by Nadiya-4 stand out. Not only are they widely used in Ukraine — they’re also locally developed and manufactured, proving their reliability and performance.

Why Choose the HFE-200RW Electrosurgical Unit from Our Local Manufacturer?

This device allows fast, high-precision, and nearly painless surgical procedures — often without anesthesia. By choosing the HFE-200RW, you minimize the risk of blood loss, infection, or other complications.

What Is an Electrocoagulator?

Simply put, it’s a device that uses high-frequency current to cut tissues, seal blood vessels, and cauterize wounds through heat. And that’s just part of its full potential.

How Does It Work?

It heats tissues precisely in the surgical zone. The HFE-200RW model even lets the operator control the depth of thermal penetration — ensuring safety and precision.

How Is It Different from a Laser?

Electrosurgical tools are optimal for removing smaller growths (up to 3 cm). Larger masses may require laser removal. Recovery is typically complete within two weeks.

How Does Tissue Coagulation Occur?

The HFE-200RW unit burns off lesions using fine monopolar electrodes (with a ball tip or wire loop). This effectively eliminates the target tissue.

What Is Soft Tissue Coagulation?

It’s the process by which proteins and tissue elements denature and clump together under high temperatures — sealing blood vessels and cutting off blood flow.

What Triggers Coagulation?

Primarily, elevated temperatures — but also certain colloidal electrolytes. Ultimately, these conditions lead to controlled protein denaturation.

Why Use Electrosurgical Coagulation?

Ordering the HFE-200RW from our site along with the required instruments guarantees bloodless, precise incisions without the need for a scalpel or stitches — even for lesion removal.

Advantages of the HFE-200RW by Nadiya-4

This model is ideal for surgeries in traumatology, oncology, endoscopy, gynecology, microsurgery, plastic and general surgery. Professionals appreciate it because it:

• Delivers precise incisions and coagulation
• Handles complex procedures in minimal time
• Ensures fast wound healing with fewer complications
• Operates continuously during full shifts
• Requires minimal maintenance and repair costs

If you're looking to purchase a high-frequency electrosurgical unit like the HFE-200RW "Nadiya-4", our online store offers a wide selection — and our experts are ready to assist you with your choice.