Kelly I M, Boyd C S
Department of Radiology, Royal Victoria Hospital, Belfast, Northern Ireland.
Clin Radiol. 1999 Jun;54(6):398-401. doi: 10.1053/crad.1999.0206.
To report problems in the tethering catheter shaft of the Tempofilter, temporary caval filter.
Two cases are reported where the tethering catheter shaft of the Tempofilter buckled within the jugular vein.
Buckling of the tethering shaft caused cephalic migration of the filter into the right atrium. Both filters were uneventfully removed without adverse sequelae.
These cases demonstrate another mechanism of tethering shaft shortening which results in unexpected migration of the filter. This device is potentially dangerous because of the liability of the tethering cather to buckle at or near the insertion site with cephalic migration of the filter. Improvements in the tethering catheter mechanism need to be made before further patient usage.
报告临时腔静脉滤器Tempofilter的系留导管杆出现的问题。
报告了2例Tempofilter的系留导管杆在颈静脉内发生弯折的病例。
系留杆弯折导致滤器向头侧移位至右心房。两个滤器均顺利取出，无不良后遗症。
这些病例证明了系留杆缩短的另一种机制，该机制会导致滤器意外移位。由于系留导管在插入部位或其附近容易发生弯折并导致滤器向头侧移位，该装置存在潜在危险。在进一步用于患者之前，需要对系留导管机制进行改进。
