Comparison of mechanical thrombectomy with Tigertriever versus Solitaire X stent retriever in real-world practice: A matched-pair retrospective analysis
Bibliographic record
Abstract
Background The Tigertriever (Rapid Medical, Israel) is the first manually expandable stent retriever, designed to enhance clot engagement and vessel wall apposition. Despite increasing use, comparative data with the widely adopted Solitaire X device (Medtronic, USA) are limited. This study aimed to compare the safety and efficacy of Tigertriever versus Solitaire in mechanical thrombectomy (MT) for acute ischemic stroke due to large vessel occlusion. Methods We retrospectively analyzed 346 MT procedures (May 2019–September 2024). Patients treated with Tigertriever or Solitaire X (with/without aspiration) were matched 1:1 using a nearest-neighbor approach based on age, National Institutes of Health Stroke Scale, Alberta Stroke Program Early CT Score, and occlusion site. Outcomes included procedural safety (complications, hemorrhage, mortality) and efficacy (number of passes, time to reperfusion, final modified treatment in cerebral infarction, and 3-month modified Rankin Scale) were compared, with propensity score adjustment applied in the analyses. Results In total, 268 matched patients (134 per group) were included. Baseline characteristics were balanced, except that Tigertriever patients had longer onset-to-puncture times and more cardioembolic strokes. The Solitaire X group demonstrated a significantly higher first-pass recanalization rate ( p = 0.03; adjusted odds ratio (OR) = 1.82, 95% confidence interval (CI): 1.02–3.23, p = 0.04) and required fewer device passes to achieve successful reperfusion ( p < 0.001; adjusted OR = 0.19, 95% CI: 0.06–0.56, p = 0.002). In atherosclerotic occlusions, Tigertriever tended to have higher reperfusion and first-pass success rates and better 3-month outcomes. Overall, 90-day functional outcomes did not differ significantly. Conclusions Tigertriever and Solitaire demonstrated comparable 3-month functional outcomes, though procedural profiles and subgroup advantages differed. Further randomized trials are warranted.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".