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A "mouse in a trap" method for cerebral protection during carotid stenting: Technical note
Shogo Nishi1, Takahisa Katsuki, Hisae Mori
1Department of Neurosurgery, Takatsuki Red Cross Hospital, Osaka, Japan. sn1957@ja3.so-net.ne.jp
Summary
A novel "mouse in a trap" technique for carotid artery stenting (CAS) uses dual occluders to capture emboli. This method shows promise in reducing thromboembolic events during CAS procedures for carotid stenosis.
Area of Science:
- Vascular Surgery
- Interventional Cardiology
- Medical Device Innovation
Background:
- Carotid artery angioplasty and stenting (CAS) is an alternative to carotid endarterectomy for treating carotid stenosis.
- Cerebral protection systems have reduced complications during CAS.
- Thromboembolic events remain a concern in CAS procedures.
Observation:
- A new "mouse in a trap" emboli entrapment-aspiration system was developed.
- The system utilizes one proximal and two distal occluders in the carotid arteries.
- Serial inflation-deflation cycles were employed during stenting.
Findings:
- Debris retrieval occurred at different stages: before dilation (1 patient), after deployment (1 patient), and after dilation (2 patients).
- The "mouse in a trap" method was successfully applied in three patients.
- The technique aims to capture embolic material during CAS.
Implications:
- This innovative approach may enhance the safety and efficacy of CAS.
- Potential to further minimize periprocedural thromboembolic complications in carotid stenosis treatment.
- Further studies are warranted to validate the long-term benefits and broader applicability of this technique.

