About the Manufacturer of the “Nadiya‑4” HFESU

High‑frequency Nadiya‑4 electrosurgical units are manufactured in Ukraine. The production company was established in 1999 in response to a shortage of quality electrical systems in Ukraine on which sophisticated industrial and domestic devices could be based. To meet this demand, a Research Institute of Applied Electronics was founded within the Electronics Faculty of Kyiv Polytechnic.

Nadiya‑4 high‑frequency electrosurgical units

Main Objective of the Nadiya‑4 HFESU Developers

The Research Institute of Applied Electronics is best known for producing unique high‑frequency electrosurgical units — Nadiya‑4 devices. In Kyiv and across Ukraine, top‑tier specialists conduct intensive R&D. The company’s primary goal is to develop energy‑efficient equipment. This supports substantial savings in maintenance and power consumption across several sectors, including:

  • transportation and infrastructure;
  • modern communication networks;
  • medical fields, especially surgery;
  • municipal utilities and other services.

Specialization of the Research Institute of Applied Electronics

LLC Research Institute of Applied Electronics focuses on R&D in electrical engineering. Based on thoroughly researched and tested technologies, it develops new models of various equipment. High‑frequency electrosurgical Nadiya‑4 units are especially in demand. The manufacturer’s product catalog also includes:

  • energy‑saving equipment for municipal services;
  • innovative photovoltaic energy converters and control systems;
  • functional electronic devices made from ferroelectric and piezoelectric materials;
  • compressor‑type equipment in power electronics;
  • electromagnetic water treatment devices to reduce scale buildup;
  • microelectronics, including sensors for various physical parameters.

Advantages of Nadiya‑4 Electrocautery Units

This equipment significantly simplifies and enhances surgical outcomes. It is suitable for microsurgery, plastic surgery, endoscopy, and gynecology. Thanks to their compact and portable design, these units are used not only in major medical centers but also in peripheral hospitals, small private surgery clinics, and various types of health facilities. Purchasing a Nadiya‑4 high‑frequency electrosurgical unit in our online store is justified by numerous benefits. Specifically, these devices are valued for their:

  • high surgical efficiency;
  • safety and complication prevention;
  • precision and scalable manipulation;
  • avoidance of deep tissue damage;
  • faster healing of incision sites;
  • reduced risk of hypertrophic scarring;
  • minimal postoperative pain;
  • reduced swelling during recovery;
  • infection prevention;
  • stabilizing effect of high‑frequency waves;
  • bloodless tissue incision;
  • clear surgical field access;
  • ambulatorial capability for most procedures.

Nadiya‑4 high‑frequency electrosurgical coagulators

Nadiya‑4 Electrocautery Unit Package Contents

Each device comes with everything needed for immediate use. Additional bipolar and monopolar electrodes and other instruments may also be included. Standard components of the Nadiya‑4 HFESU package include:

  • various types of electrodes;
  • the main electronic control unit;
  • foot pedal;
  • straight and curved knife electrodes;
  • bipolar forceps in various sizes;
  • monopolar and bipolar electrode holders.

We offer Nadiya‑4 high‑frequency electrosurgical units at competitive prices. As the official distributor of the manufacturer, our prices are set below the average market rates.

The Nadiya‑4 high‑frequency electrosurgical units are designed for cutting and coagulating soft tissues and blood vessels using high‑frequency current during surgeries in hospitals and clinics.

Electrocautery units (HFESUs) are used for incision and tissue coagulation during surgical treatment. They generate high‑frequency current that heats and dissects intracellular fluid and tissue where the active electrode contacts. Depending on the selected mode and instrument, the device enables either cutting or coagulation. These high‑frequency electrosurgical coagulators support contact-style cutting, bipolar and monopolar coagulation of soft tissues. The new generation is intended for general surgery, endoscopy, dermatology, gynecology, vascular surgery, neurosurgery, cardiothoracic surgery, ENT, transurethral resection, orthopedics, maxillofacial surgery, urology, etc. The entire equipment line is based on our extensive experience and is tested under strict quality control.

Device Classification:

  • Climatic climatic category – UHL 4.2;
  • Mechanical resistance group – Group 2;
  • Failure consequence class – Class B;
  • Electrical safety – Class II, Type BF;
  • Protection degree – housing IP24, pedal IPX7;
  • Duty cycle – intermittent short‑term operation;
  • Potential hazard category – Class IIb devices.

Key Technical Specifications of Nadiya‑4 HFESUs:

  • Rated for 8 hours of operation at maximum output into a nominal 200 Ω load in intermittent mode: 10 s on / 30 s off;
  • LED indicators for power supply, selected mode, output power level, and neutral electrode circuit status;
  • Audible tone and frequency change notifications for power level, mode switching, and neutral‑electrode circuit break;
  • Mode activation locking within 1 minute after power‑on;
  • Continuous operation: at least 8 hours with ≥2 hour rest;
  • Stepped output power regulation across all modes;
  • Output voltage limits: cutting ≤ 450 V; coagulation ≤ 300 V;
  • Output current limit ≤ 2.5 A;
  • Device ready ≤ 5 s after mains connection;
  • Output HF signal modulation:
  • Cutting – Mode 2; Coagulation – Mode M – 22 ± 2.2 kHz.

Total service life: minimum 5 years.