Malone Kevin, Stevens Christopher M, Merriman Chandler, Harper Daniel, Wadhwa Reena, D'agostino Horacio R
Biomedical Engineering, Louisiana State University Health Sciences Center, Shreveport, USA.
Interventional Radiology, Louisiana State University Health Sciences Center, Shreveport, USA.
Cureus. 2022 May 20;14(5):e25174. doi: 10.7759/cureus.25174. eCollection 2022 May.
Herein we describe an outer cannula sleeve-sheath with a coaxially inserted exchangeable drainage catheter (SCDC) for effective evacuation of recurrent symptomatic fluid collections in the thorax and abdomen on patients in lieu of, or failed, current evacuation catheters and methods. The design is an alternative to existing commercially available devices and adds distinct enhancements with the possibility of intrathoracic or intrabdominal trans outer sleeve-sheath diagnostic or therapeutic interventions. This device aims at requiring a single invasive procedure (thoracentesis and paracentesis) while offering catheter exchange and repositioning if malfunction or malposition occurs during the patient's lifetime. The SCDC outer sheath in the subcutaneous tissues of the thorax or abdomen has built-in two antibacterial cuffs to prevent infection. At the same time, the exchangeable coaxially inserted drainage catheter is deployed over a guidewire within the thoracic or abdominal cavities. The drainage catheter has a fluid dynamic proven efficient design to facilitate drainage and can recanalize its lumen if occluded by fibrin or tissue.
在此，我们描述了一种外套管鞘，其同轴插入可更换的引流导管（SCDC），用于有效排空胸部和腹部反复出现症状性积液的患者体内的积液，以替代现有的引流导管及方法，或在现有方法失败时使用。该设计是现有商用设备的替代方案，并具有显著改进，有可能通过外套管鞘进行胸腔内或腹腔内诊断或治疗干预。该设备旨在只需进行一次侵入性操作（胸腔穿刺术和腹腔穿刺术），同时在患者生存期内出现故障或位置不当的情况下，可更换导管并重新定位。位于胸部或腹部皮下组织的SCDC外鞘内置有两个抗菌套囊以防止感染。同时，可更换的同轴插入引流导管通过导丝在胸腔或腹腔内展开。引流导管具有经流体动力学验证的高效设计，便于引流，并且在被纤维蛋白或组织阻塞时可重新疏通其管腔。
