The utility of the PK papyrus covered stent in neurointervention: A prospective study on safety, efficacy, and aneurysm occlusion rates

Abstract

Background

Covered stents have become increasingly utilized in neurovascular interventions due to their ability to achieve immediate lesion occlusion while preserving the parent vessel. The PK Papyrus stent is a thinner balloon mounted covered stent that has been used off-label in neurointerventions, but there is limited evidence regarding its performance and clinical benefits. This study aims to evaluate the PK Papyrus stents safety, efficacy, and occlusion rates in managing complex neurovascular pathologies.

Methods

We conducted a retrospective analysis of a prospectively enrolling study that included 13 patients. The primary outcome was the rate of complete aneurysm and carotid-cavernous fistula (CCF) occlusion. Secondary outcomes focused on safety, including the incidence of periprocedural complications, device-related complications, and adverse events.

Results

The study included 13 patients, with 46.1 % being female. The median modified Rankin Scale (mRS) at presentation was 1. The PK Papyrus stent was successfully deployed in all cases (100 %). No periprocedural complications were encountered. Additionally, there were no device-related complications, including stent fracture or in-stent stenosis. Over a median follow-up duration of 6 months, all treated lesions remained completely occluded, with stable vessel patency and no evidence of recurrence or recanalization. No adverse events or neurological deficits were reported among the patients.

Conclusion

This study indicates that the PK Papyrus covered stent is a safe and effective option for managing complex neurovascular pathologies. It demonstrated a high technical success rate, with no periprocedural or device-related complications, supporting its use as a promising alternative to other endovascular modalities in select cases.