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용종제거용 스네어의 회전 제어력 향상을 위한 NiTi 코어드 와이어(cored-wire) 개발
김정한(J.H. Kim),김성웅(S.W. Kim),김복동(B.D. Kim),오윤석(Y.S. Oh) 한국소성가공학회 2015 한국소성가공학회 학술대회 논문집 Vol.2015 No.5
Transmission of the rotation at the proximal end to the distal tip in real time is very important in determining the operability of medical devices such as guide-wires, catheters, and endoscopic accessories. Conventional stainless steel wire cannot meet requirement issued from medical doctors. In present work, NiTi cored guide wire was developed for the application in polypectomy snare. NiTi wire was drawn down to have a diameter of 0.3 mm. Stainless steel wire with a diameter of 0.1mm was coiled two times around the NiTi wire. Frist, the stainless steel wire was coiled in clockwise direction. After finish the coiling completely, coiling was conducted again in counterclockwise direction. Through this coiling method, the developed NiTi cored wire could demonstrate very improved rotation tracking ability. The high maneuverability of the wire is expected to be widely used in medical sectors.