Assess the Penumbra System in the Treatment of Acute Stroke "THERAPY"

Active, not recruiting

Phase 4 Results N/A

Eligibility Criteria

Inclusion Criteria

1. From 18 to 85 years of age
2. Present with symptoms consistent with an acute ischemic stroke and eligible for IV rtPA therapy (patients presenting 3-4.5 hrs from symptom onset are not eligible if they are >80 yrs of age, have a history of stroke and diabetes, anticoagulant use (even if INR is <1.7) and have a NIHSS score >25
3. Evidence of a large vessel occlusion in the anterior circulation with a clot length of 8mm or longer
4. NIH Stroke Scale (NIHSS) score 8 or greater or aphasic at presentation
5. Signed informed consent

Exclusion Criteria

1. History of stroke in the past 3 months.
2. Females who are pregnant
3. Pre-existing neurological or psychiatric disease that could confound the study results such as a pre-stroke mRS score 1 or greater
4. Known severe allergy to contrast media
5. Uncontrolled hypertension (defined as systolic blood pressure >185 mmHg or diastolic blood pressure >110 mmHg)
6. CT evidence of the following conditions at randomization:
- Significant mass effect with midline shift
- Any acute ischemic changes in >1/3 of the affected middle cerebral artery territory
- Evidence of intracranial hemorrhage
7. Angiographic evidence of tantem extracranial occlusion or an arterial stenosis proximal to the occlusion that requires treatment prior to thrombus removal. Moderate stenosis not requiring treatment is not an exclusion
8. Angiographic evidence of preexisting arterial injury
9. Rapidly improving neurological status prior to randomization
10. Bilateral stroke
11. Intracranial tumors
12. Known history of cerebral aneurysm or arteriovenous malfunction
13. Known hemorrhagic diathesis, coagulation deficiency, or on anticoagulant therapy with an International Normalized Ratio (INR) of >1.7
14. Baseline platelets <50,000
15. Use of IV heparin in the past 48 hours with PPT >1.5 times the normalized ratio
16. Pre-treatment glucose <50mg/dL or >300mg/dL
17. Life expectancy less than 90 days prior to stroke onset
18. Participation in another clinical investigation that could confound the evaluation of the study device