Vorwerk D, Guenther R W, Clerc C, Schmitz-Rode T, Imbert C
Department of Diagnostic Radiology, Technical University of Aachen, Germany.
Radiology. 1992 Feb;182(2):415-8. doi: 10.1148/radiology.182.2.1732959.
A self-expanding sheath with a tulip-shaped distal end was designed for performance of percutaneous embolectomy. Its ability to retrieve clots was tested in an in vitro flow model; results were compared with those obtained with a conventional 10-F sheath. Simulated embolectomy of clots weighing 0.1-1.5 g was performed with a 0.75-mL Fogarty balloon on a 4-F catheter. The clot material that embolized distally during the procedure was sampled and quantified. No effective embolectomy was performed via a conventional sheath. With the tulip sheath, however, complete clot removal was achieved unless the clot size exceeded the tulip volume. On the basis of results of in vitro testing, the tulip design is promising for use in several applications during percutaneous interventions.
设计了一种远端呈郁金香形的自膨胀鞘管，用于经皮取栓术。在体外血流模型中测试了其取栓能力；将结果与使用传统10F鞘管获得的结果进行比较。使用4F导管上的0.75mL福格蒂球囊对重量为0.1 - 1.5g的模拟血栓进行取栓。对术中向远端栓塞的血栓材料进行取样和定量。通过传统鞘管未实现有效的取栓。然而，使用郁金香鞘管，除非血栓大小超过郁金香的容积，否则可实现完全清除血栓。基于体外测试结果，郁金香设计在经皮介入的多种应用中具有应用前景。
