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Tenzing 7 Delivery Catheter Performance Across Tortuosity Indices.

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Summary
This summary is machine-generated.

The Tenzing 7 (T7) catheter successfully delivered large aspiration catheters in 95.3% of acute ischemic stroke cases, regardless of internal carotid artery (ICA) tortuosity. This device is effective for endovascular thrombectomy in patients with complex vascular anatomy.

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Area of Science:

  • Neurology
  • Interventional Neuroradiology
  • Medical Devices

Background:

  • The Tenzing 7 (T7) delivery catheter is designed to overcome challenges in navigating tortuous neurovasculature.
  • Its flexible tip aims to reduce the 'ledge effect' during intracranial procedures.
  • This study evaluates the T7 catheter's performance in internal carotid arteries (ICAs) with varying degrees of tortuosity.

Purpose of the Study:

  • To characterize the performance of the Tenzing 7 (T7) delivery catheter in patients undergoing aspiration thrombectomy for acute ischemic stroke.
  • To assess the impact of internal carotid artery (ICA) tortuosity on T7 catheter success rates and procedural outcomes.

Main Methods:

  • Retrospective analysis of prospectively collected data from 107 patients treated between January 2020 and July 2022.
  • Internal carotid artery (ICA) tortuosity index (TI) calculated from digital subtraction angiography.
  • T7 success defined as delivery to the occlusion face; regression analysis used to assess TI correlation with success and outcomes.

Main Results:

  • The T7 catheter achieved a technical success rate of 95.3% (102/107 patients).
  • No significant association was found between ICA tortuosity index (TI) and T7 technical success (P = 0.23).
  • Higher tortuosity did not correlate with worse intraprocedural outcomes.

Conclusions:

  • The Tenzing 7 (T7) delivery catheter demonstrates high efficacy in intracranial delivery, even in highly tortuous extracranial vasculature.
  • Procedural success and performance were consistent regardless of ICA tortuosity.
  • The T7 catheter is a suitable option for aspiration endovascular thrombectomy in acute stroke patients with tortuous vasculature.