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STAR

Ablation from Spine Metastases with STAR™

The first radiofrequency ablation system specifically developed for patients with metastatic spinal tumors.

Metastatic disease in the skeleton may occur in up to 85% of patients with the three most common types of cancer – breast, prostate and lung.1 The spine is the most common site for bone metastasis, where it commonly affects multiple vertebral levels.For patients, this can cause debilitating pain, numbness, and even paralysis as these tumors impinge on neurologic tissue and weaken the structure of the vertebrae. Targeted Radiofrequency Ablation (t-RFA) with the STAR™ Tumor Ablation System was developed to provide these patients a new, minimally invasive treatment option to alleviate pain.

Access and Navigation in 3 dimensions

The STAR™ Tumor Ablation System is designed and purpose-built for the palliative treatment of metastatic vertebral body lesions. With active steering capabilities, the SpineSTAR ™ Ablation Instrument enables physicians to create site-specific ablation zones throughout the vertebral body from a unipedicular approach, thereby minimizing the number of times instrumentation must pass the spinal canal while still providing 3-dimensional access to the vertebral body.

Active navigation and articulation allows the SpineSTAR™ Ablation Instrument to target the desired lesion via a unipedicular approach.

Controlled Ablation Zone

The STAR™ Tumor Ablation System offers controlled thermal distribution that produces a consistent and predictable ablation zone. The steep thermal gradient produced by the SpineSTAR™ Ablation Instrument is designed to minimize impact to vital structures adjacent to the ablation zone.

Ablation instrument: Bipolar design, thermo-couples are located at the periphery of the ablation zone in a configuration designed to monitor margins and temperatures within the kill-zone and provide an added margin of safety for adjacent vital structures.
Ablation zone: The unique electrode design maximizes edge effects and RF energy delivery to the targeted tissue while minimizing charring and impedance shut-offs.

Intelligent Energy Delivery

The MetaSTAR™ RF Generator displays real-time feedback to the physician including RF cycle time, active impedance measurements, and current temperatures at multiple locations within and at the periphery of the ablation zone.

Metastar: Real-time temperature information is displayed to assist physicians in gauging ablation zone margins and to inform intra-operative treatment decisions.

Benefits of the STAR Ablation System:

With its use of targeted RF energy, the STAR™ System improves the physician’s ability to offer acute pain relief by a single, minimally invasive procedure that is compatible with both chemo and radiation therapy.

  • Rapid pain relief (prior to an eventual radiation therapy)
  • Minimally invasive, procedure with potential to reduce tumor mass
  • Targeted treatment for radio-resistant lesions
  • Alternative for patients who have reached their cumulative toxicity limit
  • Compatible with current treatment algorithms
  • Improves life quality

Further Information

  1. Kurup AN und Callstrom MR. J VascIntervRadiol. 2010;21:S242-S250.
  2. Constans JP, et al., J Neurosurg 59:111-118,1983.
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