Why Next-Generation Microwave Ablation Systems Need Ultra-Flexible & High-Power Transmission Cables？

In minimally invasive thermal therapy, microwave ablation (MWA) has revolutionized treatment for solid tumors, thyroid nodules, and various localized lesions. However, as ablation systems demand higher output power and greater procedural control, the transmission cable connecting the generator to the ablation needle has become a critical link.

Standard RF cables often suffer from stiffness ("stiff drag"), excessive thermal buildup, power loss, and poor maneuverability, directly impacting surgical outcomes. To solve these clinical pain points, our HAJ520 and HCJ600 ultra-flexible, high-power microwave ablation transmission cable series were specifically engineered.

Here is why top medical device manufacturers and clinicians are adopting this advanced cable series.

During delicate ablation procedures, rigid or stiff cables create unnatural resistance ("fighting against the surgeon’s hand"), hindering precise needle positioning.

• HAJ520 (Ultra-Flexible, Rope-Like Handling): Designed with a proprietary conductor and specialized stranded structure, HAJ520 behaves like a flexible rope. It glides seamlessly along surgical pathways without buckling, maintaining tactile sensitivity during insertion and retraction.

• HCJ600 (High-Durability Bending): Built to endure frequent movement and tight bending radiuses without phase shift or power degradation, preventing cable wear during repeated procedural repositioning.

Energy loss in poor-quality cables converts directly into unwanted thermal radiation, causing the cable surface to heat up during extended or high-power procedures—posing a severe contact burn hazard to patients and medical personnel.

• High Efficiency & Low Attenuation:

  • HAJ520: Attenuation as low as 0.55 dB/m @ 2.45 GHz (Peak power impulse: 100W).

  • HCJ600: Attenuation as low as 0.45 dB/m @ 2.45 GHz (Peak power impulse: 120W).

• Cool Touch Performance: Thanks to precise 50ohm impedance matching and low Voltage Standing Wave Ratio (VSWR < 1.20), energy reflection is minimized. Even under maximum peak power, the outer sheath temperature remains strictly < 48°C, ensuring long-duration, high-power ablation remains cool to the touch and safe.

Surgical environments demand strict infection control and resistance to corrosive fluids or sterilization protocols.

• Thermoplastic Elastomer (TPE) Sheath: Both HAJ520 (OD 5.20mm) and HCJ600 (OD 6.00mm) feature a lightweight, ultra-smooth TPE outer jacket. The smooth surface significantly reduces drag against operating tables and instruments while allowing effortless wiping, cleaning, and disinfection.

• 96-Hour Salt Spray Tested: Certified to withstand 96 hours of salt spray exposure, ensuring exceptional corrosion resistance against bodily fluids, saline, and harsh chemical sterilants.

Medical equipment designers require versatility when connecting generators to various handpieces and needles.

• Broad Connector Options: Available with multiple medical/RF connector configurations, including N, BNC, miniBNC, MCX, RPMCX, and SMA.

• Target Applications: Perfect as primary output assemblies for microwave ablation generators, tumor ablation systems, and interventional pain management devices.

Choosing the right transmission cable is no longer just about electrical performance—it is about physician control, operational thermal safety, and long-term durability. The HAJ520 and HCJ600 series deliver the ideal synergy of low loss, cool operation, and rope-like flexibility, making them the ultimate choice for next-generation microwave ablation systems.