LEADERS IN RADIOFREQUENCY ELECTROSURGERY
Technology
Electrical properties of biological tissue
The electrical impedance of biological tissue decreases as the frequency of the applied electrical field increases. This occurs mainly because cell membranes are poor conductors and limit the field’s ability to penetrate the cells.
Tissue permittivity and resistivity
At lower frequencies, the resistive component of the cell membrane dominates. At higher frequencies, the membrane becomes capacitively coupled, effectively short-circuiting its resistance and allowing the electrical field to penetrate the cell structure. Consequently, effective tissue permittivity and resistivity decrease at higher frequencies, including the 4 MHz operating frequency used by PROXIMA’s radiofrequency electrosurgical devices.
Comparative observations show that tissue impedance varies among skin, adipose tissue, and muscle because of differences in water content, electrolyte concentration, and tissue structure. Skin typically shows higher impedance, adipose tissue even higher due to low conductivity, while muscle has lower impedance because of higher water and electrolyte content. These impedance-related differences are illustrated in the diagrams below for skin and adipose tissue.
Schematic representation of beige adipocytes exposed to a radiofrequency electrical field
Efficiency
As it passes through tissue, RF energy generated by the electrical field is converted into heat. At 4 MHz, the energy heats not only the intercellular space and cell membranes but also the entire cell structure. As a result, RF energy is delivered gently and evenly throughout the tissue.
Electrosurgery
Electrosurgery is a surgical technique that uses high-frequency electrical current to cut, coagulate, or modify biological tissue. In conventional electrosurgery systems operating in the range of 330–500 kHz, tissue interaction is associated with higher impedance and greater thermal spread compared to radio-frequency systems.
At 4 MHz, electrosurgical energy can be delivered more atraumatically because tissue impedance decreases as frequency increases. Biological tissue behaves predominantly as a capacitive medium, meaning its impedance is inversely related to frequency. As a result, higher frequencies allow more efficient energy transfer with reduced collateral thermal damage.
Because tissue impedance is lower at higher radiofrequencies, the same output power can be achieved with a lower required voltage, resulting in more controlled energy delivery and improved surgical precision.
Products
Our products represent the pinnacle of radiowave surgery technology. We have developed advanced radiofrequent electrosurgical units operating at the optimal frequency of 4MHz, providing exceptional precision while minimizing thermal damage to surrounding tissue. Featuring both monopolar and bipolar modes, our technology is highly adaptable to a wide range of medical procedures.
Our portfolio highlights two carefully designed models, created to meet the specific needs of modern medical practice – from quick, routine outpatient procedures to more complex OR surgical interventions.
RWSU Expert
The RWSU Expert is our flagship model, representing the most advanced radiowave surgery solution in our lineup. It is designed to the highest standards to deliver premium performance in both outpatient clinics and demanding OR environments. The device offers ultimate operational comfort with 4MHz monopolar and bipolar modes, while a clear 7-inch color touch LCD enables easy, fast, and intuitive control over all parameters.
Thanks to its power, reliability, and precision, the RWSU Expert boasts a wide spectrum of applications across numerous surgical disciplines.
RWSU 70
The RWSU 70 is our highly reliable, economical model, built with a focus on maximum efficiency and ease of use. Operating in a 4MHz monopolar mode, this device consistently delivers outstanding clinical results in everyday practice. Its compact design and user-friendly interface make it an ideal, practical choice for minor outpatient interventions performed under local anesthesia, where speed, patient safety, and precise incisions are of utmost importance.
Products
Our products represent the pinnacle of radiowave surgery technology. We have developed advanced radiofrequent electrosurgical units operating at the optimal frequency of 4MHz, providing exceptional precision while minimizing thermal damage to surrounding tissue. Featuring both monopolar and bipolar modes, our technology is highly adaptable to a wide range of medical procedures.
Our portfolio highlights two carefully designed models, created to meet the specific needs of modern medical practice – from quick, routine outpatient procedures to more complex OR surgical interventions.
RWSU Expert
The RWSU Expert is our flagship model, representing the most advanced radiowave surgery solution in our lineup. It is designed to the highest standards to deliver premium performance in both outpatient clinics and demanding OR environments. The device offers ultimate operational comfort with 4MHz monopolar and bipolar modes, while a clear 7-inch color touch LCD enables easy, fast, and intuitive control over all parameters.
Thanks to its power, reliability, and precision, the RWSU Expert boasts a wide spectrum of applications across numerous surgical disciplines.
RWSU 70
The RWSU 70 is our highly reliable, economical model, built with a focus on maximum efficiency and ease of use. Operating in a 4MHz monopolar mode, this device consistently delivers outstanding clinical results in everyday practice. Its compact design and user-friendly interface make it an ideal, practical choice for minor outpatient interventions performed under local anesthesia, where speed, patient safety, and precise incisions are of utmost importance.
Clinical applications
Dermatology
4MHz radiofrequency technology allows for the precise, virtually scar-free removal of skin lesions by minimizing lateral thermal damage and promoting rapid healing.
Gynecology
RF units provide exceptional precision for delicate cervical treatments and lesion removals, ensuring pristine histological margins and minimizing tissue trauma.
Plastic surgery
Delivering bloodless incisions without tissue charring, advanced 4MHz RF energy ensures superior aesthetic outcomes and faster recovery times in delicate reconstructive procedures.
Maxillofacial surgery
Unparalleled surgical control enables precise tissue dissection and effective hemostasis with minimal necrosis, significantly reducing postoperative edema in complex facial interventions.
ENT
Targeted energy delivery allows for the precise ablation of mucosal tissue in delicate procedures, preserving underlying structures and minimizing postoperative discomfort.
Oral surgery
Ideal for soft tissue management in highly vascular oral cavity, 4MHz RF energy provides immediate hemostasis for a clear surgical field and accelerates patient healing.
General Outpatient Surgery
Combining swift cutting with efficient coagulation, these versatile units streamline minor surgical procedures and ensure a rapid return to daily activities for ambulatory patients.
Urology
Tailored for delicate urological applications, radiofrequency technology enables precise, bloodless excisions for circumcisions and the removal of perianal condylomas, ensuring minimal scarring and rapid patient recovery.
What our clients say
“As a dermatologist, it is most important to me that procedures are performed with maximum precision and without aesthetic consequences for the patient. Working at a frequency of 4 MHz enables exceptionally clean incisions with minimal thermal damage to the surrounding tissue. These radiofrequency devices have proven to be a completely indispensable and reliable tool in my daily practice of removing skin lesions.”
“In my clinical work, I encounter challenging skin lesions on a daily basis, where absolute control of the depth is crucial. The use of RWSU radiofrequency electrosurgical units guarantees not only superior aesthetic results, but also significantly faster patient recovery. The reliability and consistency of this system provide the doctor with tremendous confidence during every procedure.”
“For a successful and safe surgical procedure, reliable hemostasis and effective tissue cutting without unwanted carbonization are essential. This radiofrequency technology provides the perfect balance, allowing me excellent visibility of the surgical field with minimal tissue trauma. The device easily meets the high demands and standards of modern surgery, both in outpatient settings and in operating room environments.”
“When performing procedures on highly sensitive tissues, a minimal thermal zone is of crucial importance in order to preserve the quality of the histopathological specimen. Radiofrequency surgery with RWSU radiofrequency devices offers exactly that – exceptional control and precision. Patients tolerate the procedures extremely well, with a quick and uncomplicated post-procedural course.”
“In urology, we often perform procedures in areas where conventional methods can be too aggressive. By using this radiofrequency electrosurgical system, the removal of lesions is quick, highly selective, and provides exceptional patient comfort. The precision of the device and the ‘gentleness of the effects on the tissue’ significantly facilitate the work and shorten the overall duration of the procedure.”
PROXIMA – medical technology
Technology is all around us and completely permeates our lives. Today, medical technology is an integral part of medicine, and we encounter it from the moment we give blood “for the machine to count our white blood cells,” through non-invasive methods to “look inside our body” using magnetic resonance imaging (MRI), to the use of high-frequency electrical current for “cutting and coagulating tissue” with electrosurgical units. The significance of medical technology for society and the world as a whole is immense.
EXPERIENCE AND LONGEVITY
We at PROXIMA d.o.o. have been manufacturing top-quality medical technology for over 20 years. We are particularly proud of our 4MHz radiowave electrosurgical technology, which represents a very rare and advanced technology worldwide.
PRODUCTION AND QUALITY CONTROL
As manufacturers, we pay special attention to details, quality, and the reliability of our technology. Production procedures and quality control in accordance with the ISO13485 quality management standard and CE compliance ensure durability and reliability.
DESIGN AND DEVELOPMENT
Continuous work on new products and functionalities in the design and development department ensures our products remain in line with modern technologies.
SERVICE AND TECHNICAL SUPPORT
Professional equipment, quick response times, and quality service make our technical and service support the best in its class and represent an added value.
Contact Us
After you submit your inquiry, our sales representatives will get in touch with you within the next 48 hours.
Email Address
office@proxima-medical.rs
Phone Number
+ 381 18 4 291 290
+ 381 18 4 291 288
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