回転・振動を付与した穿刺による組織損傷の組織学的分析

抄録

Needles used in percutaneous insertion must be as thin as possible to minimize invasiveness of procedures. However, using extra-thin needles can cause needle deflection. Needle deflection can be minimized by axial rotation along the needle shaft. However, although high rotation speeds may decrease needle deflection, this may increase tissue damage. Few studies mentioned histological evaluation of tissue damage caused by rotational needle insertion. In this paper, we present histological evaluation of tissue damage caused by the rotational needle insertion. We used histological techniques to confirm tissue damage caused by rotational needle insertion. As the results show, it was confirmed that the hole areas of needle path in the condition of unidirectional rotation in case of attached tissue to the needle was increased compared to the case of no attached tissue. Needle insertion with unidirectional rotation into human bodies might be dangerous due to winding of tissues.