The novel Tenzing 7 delivery catheter designed to deliver intermediate catheters to the face of embolus without crossing: clinical performance predicted in anatomically challenging model
| Autor: | Jens Fiehler, Fritz Wodarg, Joey English, Knut Stribrny, Markus A Möhlenbruch, Andreas Frölich, J. H. Buhk, Warren Kim, Kim Otto, Olav Jansen, István Szikora, Tony M. Chou |
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| Rok vydání: | 2020 |
| Předmět: |
Middle Cerebral Artery
medicine.medical_specialty Catheters Embolus medicine.artery Materials Testing Occlusion medicine Humans intervention Ischemic Stroke Retrospective Studies Aspiration catheter Cerebral Revascularization business.industry guidewire Clinical performance Equipment Design catheter General Medicine Neurovascular bundle stroke Catheter Carotid Arteries Treatment Outcome New Devices and Techniques Intracranial Embolism thrombectomy Ophthalmic artery Middle cerebral artery Surgery Neurology (clinical) Radiology business |
| Zdroj: | Journal of Neurointerventional Surgery |
| ISSN: | 1759-8486 1759-8478 |
| Popis: | BackgroundIn large vessel occlusionstroke, navigation of aspiration catheters (AC) can be impeded by vessel tortuosity and the ophthalmic artery origin. A novel tapered delivery catheter was designed to facilitate delivery without disturbing the embolus. We assessed AC deliverability in vitro and validated the observations in a first-in-human experience.MethodsIn a vascular model with three challenging craniocervical scenarios, two commercial AC were advanced from the carotid to the middle cerebral artery by four neurointerventionalists. Catheter deliverability with standard microwire and microcatheter (MC) combinations and the Tenzing 7 (T7) Delivery Catheter (Route 92 Medical, San Mateo, CA) were compared. Operators rated aspects of catheter deliverability on a 5-point scale. Results were compared with device delivery patterns at a neurovascular center before and after clinical introduction of T7.ResultsIn vitro, success rate and speed were higher with T7 (96%; mean 30±10 s) than with MC (65%; 72±47 s, pConclusionCompared with microcatheter and microwire combinations, T7 improves aspiration catheter delivery in vitro, minimizing the need to cross the occlusion. Initial clinical experience appears to validate the model’s observations. |
| Databáze: | OpenAIRE |
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