In vitro evaluation of a new rotational thrombectomy device: the Straub Rotarex catheter.
OBJECTIVE
To evaluate the efficacy of a new rotational thrombectomy device, and the procedure-related risk of particle embolization.


METHODS
The experiments were performed in transparent silicone tubes. The conditions of flow were as close as possible to physiological parameters. Distal embolization was detected by a mesh of nylon filters.


RESULTS
The Straub Rotarex catheter was able to remove all clots. The mean number of migrating particles larger than 1000 microm was 0.17 (+/- 0.38), the mean number of 400-1000 microm migrating particles was 1.08 (+/- 1.04). The mean intervention time was 67 (+/- 37) sec. The mean volume of collected liquid was 96.6 (+/- 24.7) ml.


CONCLUSIONS
The in vitro results suggest that the Straub Rotarex catheter is able to remove large volumes of thrombus with a limited risk of embolization. The main limitation of our model is the absence of adhesion of the clot to the tube.
Zana
K
K
Department of Radiology, University Semmelweis, Faculty of Health and Sciences, Szabolcs U.33-35, H-1135 Budapest, Hungary.
Otal
P
P
Fornet
B
B
Forrai
G
G
Chabbert
V
V
Smayra
T
T
Joffre
F
F
Rousseau
H
H
D002404:Catheterization / Q000009:adverse effects / Q000295:instrumentation*; D004617:Embolism / Q000517:prevention & control; D004867:Equipment Design; D066298:In Vitro Techniques; D008955:Models, Cardiovascular; D017131:Thrombectomy / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods; D013927:Thrombosis / Q000628:therapy*