Microwave therapy, emerging from the development of modern radio technology, has become a significant branch of high-frequency electrotherapy since its formal clinical application in the late 1940s. Among its applications, microwave ablation has gained increasing prominence in tumour treatment due to its precise and efficient therapeutic properties, offering patients a new minimally invasive treatment option.

Principles and Advantages of Microwave Ablation Therapy


The therapeutic principle of microwave ablation shares similarities with the everyday ‘microwave oven’, both fundamentally relying on microwave heating to induce coagulative necrosis of tissue, thereby achieving the ‘inactivation’ of tumour cells. The specific treatment process is highly precise: utilising clinically common frequencies of 915 MHz or 2450 MHz, a microwave needle with a diameter of merely 2mm is accurately inserted through the skin into the tumour tissue under real-time guidance from imaging techniques such as CT. Under the influence of the microwave electromagnetic field, polar molecules within the tumour tissue—such as water molecules and protein molecules—undergo extremely rapid vibration. The intense collisions and friction between these molecules release substantial heat within a short timeframe, rapidly elevating the local temperature to 60–150°C. This ultimately leads to coagulative necrosis of the tumour cells.




Compared to conventional tumour treatments, microwave ablation offers distinct advantages: brief ablation duration enabling rapid tumour inactivation; controllable yet extensive ablation coverage suitable for lesions of varying sizes; minimal influence from blood perfusion, ensuring efficacy even in highly vascularised tumours; minimal or no bleeding with high safety, facilitating swift patient recovery and substantially reducing treatment-related trauma.



Microwave Source: The Core Determinant of Ablation System Quality

The quality of a microwave ablation system directly dictates treatment efficacy and operational safety. As the core component, the microwave source's key technical parameters become critical evaluation criteria. These primarily include operating frequency stability, output power and adjustment precision, alongside safety and reliability performance indicators. Collectively, these parameters ensure precise microwave energy delivery and treatment reliability.

Previously, most microwave ablation devices relied on tube-type microwave source. However, this traditional technology exhibited significant shortcomings: poor frequency stability prone to drift, compromising ablation precision; low power adjustment accuracy hindering fine control; and short service life with inadequate reliability, posing potential risks in clinical use.

The breakthrough in technological advancement lies in the innovation of microwave sources—the advent of solid-state microwave sources fundamentally resolves numerous drawbacks of traditional technology.



Fully Solid-State Design: Eliminating Drift, Ushering in the Era of Precise Ablation

Wattsine's solid-state microwave source employs the latest generation of semiconductor devices within a fully solid-state design. Compared to traditional tube-based microwave sources, it demonstrates superior stability in microwave power output and supports continuous, precise adjustment. This represents a qualitative leap in key performance characteristics, offering: - Precision control capability - Exceptional frequency stability - Adaptability to multiple standing wave ratio (SWR) loads - Long-life, maintenance-free design - Comprehensive intelligent safety protection functions This technological advancement not only enhances the precision and reliability of microwave ablation therapy but also broadens its application scenarios in complex tumour cases, providing robust technical support for clinical oncology treatment.




Currently, the market share of microwave ablation instruments based on solid-state microwave sources is growing rapidly.

The technological evolution from traditional tube-type microwave sources to solid-state equivalents signifies microwave ablation's progression towards greater precision, efficiency, and safety. Looking ahead, with the ongoing refinement of solid-state microwave technology, microwave ablation holds promise for broader application in tumour treatment, offering more patients the prospect of minimally invasive cure.