Peer-Reviewed Publication THE KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (KAIST) FIGURE 1. DISPOSABLE VARIABLE STIFFNESS INTRAVENOUS NEEDLE. (A) CONCEPTUAL ILLUSTRATION OF THE KEY FEATURES OF THE P-CARE NEEDLE WHOSE MECHANICAL PROPERTIES CAN BE CHANGED BY BODY TEMPERATURE, (B) PHOTOGRAPH OF COMMONLY USED IV ACCESS DEVICES AND THE P-CARE NEEDLE, (C) PERFORMANCE OF COMMON IV...