Imperative announces data demonstrating benefits of Zoom RDL system in neurointerventional procedures


Imperative Care has announced the publication of early clinical data in the Journal of NeuroInterventional Surgery (JNIS) from a single-centre evaluation of the Zoom RDL radial access system.

This independent, retrospective evaluation of Zoom RDL in 29 patients—who underwent neurointerventional procedures from October 2022 to January 2023—was conducted by Tareq Kass-Hout, Rami Morsi, Harsh Desai, Sonam Thind and other leading neurointerventionists at the University of Chicago Medical Center (Chicago, USA).

Their data indicate that usage of the Zoom RDL radial access system is technically feasible and effective for complex neurointerventional procedures with low complication rates, an Imperative press release details.

As part of the evaluation, Zoom RDL was used in a range of neurointerventional procedures, with 31% (9/29) of these cases being stroke thrombectomies. The primary outcome measure of the evaluation was successful access of the target vessel without the need to convert to a different guide catheter or transfemoral access.

Results showed that access success was achieved in 90% (26/29) of cases, and in 100% (9/9) of stroke patients, with most cases resulting in thrombolysis in cerebral infarction (TICI) 2c reperfusion or better within one pass (67%, 6/9). There were no access site or product-related complications reported. The researchers also reported two procedure-related complications, including one intracerebral haemorrhage and one intraprocedural thrombus formation.

“Adoption of transradial access for neurointerventional procedures is at an early phase with the need for additional data supporting its use,” said Kass-Hout, lead author of the JNIS paper. “One reason behind limited adoption of transradial access, especially in mechanical thrombectomy, has been the lack of a purpose-built access catheter. Zoom RDL fulfils this need as the first radial access catheter platform built specifically for stroke, with an inner diameter that accommodates large bore aspiration catheters and the provided ability to navigate the intracranial ICA [internal carotid artery] from the radial artery.”

Zoom RDL is Imperative’s latest innovation and the first radial access platform developed specifically for ischaemic stroke treatment, an Imperative press release states. The system provides neurointerventionists with an alternative option to femoral access when treating their stroke patients, helping to enable the best possible outcome based on an individual patient’s anatomy.

With an extended hydrophilic coating, optimised dilator and a long distal flexible segment, Zoom RDL is designed to provide 0.088-inch intracranial access, which has been shown to lead to faster and better reperfusion in stroke procedures, the release also notes.

“We are pleased to see early evidence support the use of Zoom RDL in helping physicians successfully achieve radial access in patients who might not be candidates for femoral access,” said Ariel Sutton, general manager of Imperative’s Stroke business. “Our patient-first portfolio includes two options for intracranial access—Zoom 88 for femoral access and Zoom RDL for radial access—empowering clinicians to choose the best option for their patients based on their anatomy. We look forward to future results that underscore the value of the Zoom stroke solution in helping physicians take more control over their stroke thrombectomies for quicker, more efficient procedures.”


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