Title :
Small diameter active catheter using shape memory alloy
Author :
Haga, Y. ; Tanahashi, Y. ; Esashi, M.
Author_Institution :
Fac. of Eng., Tohoku Univ., Sendai, Japan
Abstract :
Three kinds of active catheters whose outside diameters are less than 2 mm were fabricated. One uses polymer links, the other two are linkless active catheters using adhesive. Distributed shape memory alloy (SMA) coil were used as actuators for the active motion. There are endoskeletal type and exoskeletal type in the linkless active catheters. We have applied the endoskeletal type active catheter to intraureteral ultrasonography used in a kidney. Concept of an advanced multifunction active catheter is mentioned
Keywords :
adhesion; biocontrol; biomedical equipment; biomedical ultrasonics; kidney; microactuators; polymers; shape memory effects; surgery; 2 mm; adhesive; diagnosis; distributed shape memory alloy coil; endoskeletal type; exoskeletal type; intraureteral ultrasonography; kidney; linkless active catheters; multifunction active catheter; polymer links; shape memory alloy; therapy; Actuators; Catheters; Coils; Hospitals; Humans; Integrated circuit interconnections; Medical treatment; Polymers; Shape memory alloys; Ultrasonography;
Conference_Titel :
Micro Electro Mechanical Systems, 1998. MEMS 98. Proceedings., The Eleventh Annual International Workshop on
Conference_Location :
Heidelberg
Print_ISBN :
0-7803-4412-X
DOI :
10.1109/MEMSYS.1998.659793
