公开(公告)号：US4698058A

公开(公告)日：1987-10-06

申请号：US787728

申请日：1985-10-15

申请人： Albert R. Greenfeld ,  Herbert Reis ,  Bernhard R. Tittmann

发明人： Albert R. Greenfeld ,  Herbert Reis ,  Bernhard R. Tittmann

IPC分类号： A61M25/00

CPC分类号： A61M25/0017 ,  A61M25/0045 ,  A61M25/0068 ,  A61M25/007 ,  A61M2025/0019 ,  A61M2025/004

摘要： Vibration is conveyed to the proximal orifices of an indwelling catheter to disintegrate accumulated clogging deposits, large suspended particles and contaminating bacteria, viruses, fungi, etc. Orifices may be recessed, hooded or enclosed, and in some cases the catheter tip should be of absorptive material, to deter propagation of the vibration to the parts of the patient's body outside the catheter. Vibration may be conveyed to the orifices by (1) a solid fiber embedded in the catheter walls or positioned in an auxiliary lumen of the catheter; or (2) by a liquid in an auxiliary lumen--which may be formed as an annular space surrounding the main lumen. Preferably the apparatus measures the amount of vibration absorbed by the deposits or bacteria, etc., as a function of frequency, and automatically concentrates the vibration at frequencies where absorption is particularly high, to maximize the disintegration of deposits, particles, bacteria or other bioactive objects. Ultrasonic shear waves are thought more effective than compressional waves, but both may be used.

摘要翻译： 振动被传送到留置导管的近端孔口以分解积聚的堵塞沉积物，大悬浮颗粒和污染细菌，病毒，真菌等。孔可以凹进，连帽或封闭，并且在一些情况下导管尖端应该是吸收的 材料，以阻止振动传播到导管外部的患者身体的部分。 可以通过（1）嵌入在导管壁中的固体纤维或定位在导管的辅助腔中将振动传送到孔口; 或（2）辅助管腔中的液体，其可形成为围绕主腔的环形空间。 优选地，该装置测量作为频率的函数的沉积物或细菌等吸收的振动的量，并且在吸收特别高的频率下自动浓缩振动，以最大化沉积物，颗粒，细菌或其它生物活性物质的崩解 对象 超声波剪切波被认为比压缩波更有效，但是可以使用两者。