Product Design And Clinical Value Of Multidisciplinary Radiofrequency Needles
May 25, 2026
Radiofrequency ablation technology, known for its minimally invasive, precise, and repeatable nature, has expanded beyond traditional oncology and pain management to widely penetrate various clinical disciplines, including cardiac electrophysiology, gynecology, spinal interventions, and even aesthetic medicine. Different specialties have diverse requirements regarding the shape, functionality, and energy delivery modes of radiofrequency electrodes (needles). As a pioneer in promoting the concept of "precision ablation," Beijing Surgnova Medical Technology Co., Ltd. demonstrates exceptional capability in meeting multidisciplinary clinical needs through its Dophi® series of RF ablation electrodes (needles), which are designed with modular and platform-based architecture.
1. Manufacturer: An Innovative Practitioner in the Field of Precise Ablation
SinoMed is a high-end medical device company specializing in three key areas: tumor interventional therapy, minimally invasive surgery, and surgical robotics. Since launching its first product, the Dophi® R150 radiofrequency ablation system in 2017, the company has developed a comprehensive portfolio of tumor ablation products covering radiofrequency, microwave, and irreversible electroporation (NanoKnife) energy platforms, becoming one of the few domestic companies to offer all three mainstream ablation technologies. Its products have received FDA, CE, and NMPA certifications and are sold globally.
II. Core Product Design: Balancing Universality and Specialization
The design philosophy of Dophi® RF ablation electrodes is "a universal base platform with specialized configurations for specific specialties."
- Platform-based host and multi-channel output: The Dophi® RF ablation system features a host unit with three independent output channels. This forward-thinking design allows operators to simultaneously connect up to three ablation electrode needles. When treating large or irregularly shaped tumors, physicians can employ "conformal needle placement," arranging multiple needles according to the tumor's contour for synchronized ablation. This enables the creation of a larger, more tumor-conforming ablation zone in a single session, significantly improving both efficiency and completeness of ablation.
- Standardized electrode series and ultra-thin needle gauge: In addition to the standard 17G electrode, SenoMed offers an industry-leading 19G ultra-fine ablation electrode. The thinner gauge (approximately 1.07 mm) results in smaller puncture trauma, reduced bleeding risk, and improved cosmetic outcomes-particularly beneficial for treating superficial organ tumors such as those in the thyroid and breast-and facilitates more precise needle positioning.
- Full-needle water circulation cooling technology: Unlike products that cool only the needle tip, the Dophi® electrode employs full-needle water circulation cooling. This technology effectively reduces temperature across the entire working segment, significantly delaying tissue carbonization and maintaining stable tissue impedance. As a result, radiofrequency energy is delivered continuously and uniformly, producing more predictable and spherical ablation zones.
- High-precision impedance control algorithm: The host unit incorporates an intelligent algorithm that continuously monitors changes in tissue impedance and automatically adjusts output power. This prevents abrupt impedance increases due to tissue carbonization from interrupting energy delivery, ensuring consistent and effective ablation throughout the procedure.
III. Multidisciplinary Clinical Integration and Value
Based on the above core technology, the Dophi® RF ablation system can easily adapt to multidisciplinary applications by using electrode needles of various lengths and specifications.
- Interventional Oncology: Used for ablation of solid tumors in the liver, lungs, kidneys, thyroid, and breasts. Its multi-needle synchronized ablation capability offers significant advantages in treating large hepatocellular carcinomas and lung cancers.
- Pain Management / Spine Surgery: Applied for radiofrequency thermal coagulation therapy in pain conditions such as herniated discs and posterior branch of spinal nerves. Precise temperature and power control is essential.
- Gynecology: Utilized for ablation treatment of uterine fibroids and adenomyosis, preserving the uterus.
- Cardiology: Although cardiac ablation primarily uses specialized catheters, the concept of precise energy control is similar. SenoMed's products have been widely adopted by numerous medical institutions worldwide. The Dophi® microwave ablation system has performed over ten thousand procedures globally, with clinical studies demonstrating excellent local control rates in liver tumor ablation.
4. Market Strategy and Industry Position
SinoMed has adopted an aggressive internationalization strategy, with its products first obtaining authoritative certifications in Europe and the United States. Leveraging superior quality and efficacy, the company has successfully entered high-end markets. Domestically, its products have actively participated in provincial-level alliance volume-based procurement programs and secured successful bids, demonstrating strong cost-control capabilities while maintaining product quality. This helps accelerate the widespread adoption of high-quality products in grassroots hospitals.
Sinocare's experience demonstrates that a successful radiofrequency ablation product should not be a single-function tool, but rather a flexible, configurable "precision ablation platform." By combining a universal high-performance host system with specialized consumables, this approach meets the in-depth needs of physicians across different specialties while reducing hospitals' equipment procurement and operational costs. This "platform-based + specialty-focused" product strategy is increasingly becoming a key approach for high-end medical device companies to succeed in multi-disciplinary markets.








