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Evaluation of the safety and performance of the BOBBY™ Balloon Guide Catheter (BGC) in patients with an acute ischemic stroke treatment, a sudden reduction or termination of the blood circulation of the brain, caused by a clot. Immediate treatment is needed to restore the blood circulation in the brain, performing a mechanical removal of the clot (thrombectomy). To prevent clot particles migrating in other parts of the brain circulation during the thrombectomy, balloon guiding catheters are inserted. The aim of the study is to evaluate the safety and performance of the balloon guide catheter BOBBY™ by collecting information from patients, treated with a mechanical thrombectomy and the balloon guide catheter (BOBBY™) after acute ischemic stroke
The main objective of the STRAIT study is to assess the performance of the mechanical thrombectomy using a BOBBY™ Balloon Guide Catheter (BGC) as adjunctive device for endovascular treatment of patients suffering from an anterior circulation acute ischemic stroke. Interventional procedures and clinical follow-up will be performed per standard of care. Patient health-related and imaging data will be collected as of stroke onset time up to 90 days follow up.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| single arm, observational post market study | Patients with an acute ischemic stroke with treatment including the BOBBY™ BGC |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| BOBBY™ Balloon Guide Catheter intended for use in neurovascular procedures, performing or as an adjunctive device | Device | The BOBBY™ BGC used during a mechanical thrombectomy procedure (stent retriever alone, contact aspiration alone or stent retriever and contact aspiration) and according to the instruction for use (IFU). |
| Measure | Description | Time Frame |
|---|---|---|
| The primary endpoint is the proportion of patients with successful reperfusion defined as mTICI≥2b per Core Laboratory evaluation. | Successful reperfusion defined as mTICI≥2b by independent Core Laboratory evaluation. | 90 days |
| Measure | Description | Time Frame |
|---|---|---|
| Technical success: successful placement of the BOBBY™ BGC at the skull base | Bobby catheter placement evaluated at predefined segments (cervical, petrous, cavernous, paraclinoid) of the internal carotic artery (ICA) per independent Core Laboratory evaluation | 90 days |
| Near complete reperfusion defined as mTICI≥2c |
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Inclusion Criteria:
Exclusion Criteria:
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Patients suffering from an anterior circulation acute ischemic stroke eligible to mechanical thrombectomy using a BOBBY™ Balloon Guide Catheter will be screened consecutively by the enrolling center. The patients will be selected in accordance with inclusion and exclusion criteria.
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| Name | Affiliation | Role |
|---|---|---|
| Tobias Boeckh-Behrens, MD | Neuro-Kopf-Zentrum Klinikum rechts der Isar der Technischen Universität | Principal Investigator |
| Patricia Boyer | Microvention-Terumo, Inc. | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Neuro-Kopf-Zentrum Klinikum rechts der Isar der Technischen Universität München | Munich | Bavaria | Germany | |||
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 42336640 | Derived | Boeckh-Behrens T, Maegerlein C, Kirschke JS, Wunderlich S, Mohlenbruch MA, Holtmannspoetter M, Janssen H, Wodarg F, Schob S, Gruber P, Remonda L, Kulcsar Z, Saliou G, Berndt MT. Performance of the new generation BOBBY balloon guide catheter for endovascular treatment of acute ischemic stroke: results of the prospective, multicentric STRAIT study. J Neurointerv Surg. 2026 Jun 23:jnis-2026-025301. doi: 10.1136/jnis-2026-025301. Online ahead of print. |
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mTICI evaluation per independent Core Lab members |
| 90 days |
| Patients with modified First Pass Effect observed (mFPE: mTICI≥2b after one pass) | mTICI result after first pass evaluated by independent Core Lab members | 90 days |
| 90 days post-procedure modified Ranking Scale (mRS) | modified Ranking Scale (mRS) assessment and questionnaire at 90 days follow up visit. The mRS has a scale from 0 till 6. 0 - No symptoms.
| 90 days |
| Mortality at 24 hours and 90 days | Serious adverse event evaluation validated by clinical event committee | 24 hours and 90 days |
| Safety evaluation device malfunction | Device related adverse event evaluation and follow up, validated by clinical event committee | 90 days |
| NIHSS at 24h post-procedure | NIHSS (National Institut Health Stroke Scale) evaluation by questionnaire to assess worsening of condition compared to baseline. The NIHSS score covers 11 specific ability items. Each item can been scored between 0 and 4, with 0 indicating a normal function and higher scores indicating the lever of impairment. The total summ of all the ablity items is the total NIHSS score. The maximum possible score is 42, with the minimum score being a 0. 0 No stroke symptoms, 1-4, Minor stroke, 5-15 Moderate stroke,16-20 Moderate to severe stroke, 21-42 Severe stroke | 24 hours |
| Procedure related events | Procedure related events and outcome evaluation validated | 24 hours |
| Occurence of new territory embolization | Assessment by independent Core Lab members of DSA or MRA at the end of the procedure and at 24 hours | 24 hours |
| Occurrence of symptomatic intracranial hemorrhage (sICH) within 24 hours | procedure imaging assessment of imaging | 24 hours |
| Martin Luther Universität Halle |
| Halle |
| Halle |
| 06120 |
| Germany |
| Neurologische Klinik Abteilung für Neuroradiologie | Heidelberg | Germany |
| Klinikum Ingolstadt, Zentrum für Radiologie und Neuroradiologie | Ingolstadt | Germany |
| Universitätsklinikum Schleswig-Holstein Campus Kiel | Kiel | Germany |
| Department of Neuroradiology, University Hospital of Paracelsus Medical Private University | Nuremberg | Germany |
| Devision Neuroradiology, Kantonsspital Aarau | Aarau | Switzerland |
| Centre Hospitalier Universitaire Vaudois (CHUV) | Lausanne | Switzerland |
| Department of Neuroradiology, University hospital Zürich | Zurich | Switzerland |
| ID | Term |
|---|---|
| D020521 | Stroke |
| ID | Term |
|---|---|
| D002561 | Cerebrovascular Disorders |
| D001927 | Brain Diseases |
| D002493 | Central Nervous System Diseases |
| D009422 | Nervous System Diseases |
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
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