PROBLEM TO BE SOLVED: To provide a needle body for living bodies which prevents damage of a tissue sample by an injuring current in collecting the tissue sample of a diseased part for acquiring more accurate and precise information.SOLUTION: A treatment needle or the needle body for living bodies for collecting a tissue sample is made of ceramic or preferably zirconium oxide and is provided with two or more through-holes in the longitudinal direction. The through-hole having the greatest diameter for collecting or taking out the tissue sample is disposed as a collecting hole in the center of the needle body, and the though-holes having a diameter smaller than that of the central through-hole are disposed in the periphery. The through-holes are respectively used as a cutting hole for cutting the tissue sample, a treatment hole for infusing a disinfectant solution, a hole for administering a medicament for infusing a medicament for destroying cells having diseases, and an observation hole for observing an internal state for enabling more reliable collections.COPYRIGHT: (C)2009,JPO&INPIT【課題】疾患部の組織サンプルの採取に伴い、組織サンプルの負傷電流による損傷を防止して、より正確で精密な情報を得るための生体用針体を提供する。【解決手段】治療針あるいは疾患部の組織サンプルを採取するための生体用針体であって、セラミック特に好ましくは酸化ジルコニウムで構成し、かつ長手方向に2つあるいは3つ以上の貫通孔を設け、針体の中央に組織サンプルを採取、取り出すための最も大きい孔径を有する貫通孔を採取用孔として配置し、その周囲に中央の貫通孔よりも小さい孔径を有する貫通孔を配置し、それぞれ組織サンプルを切断する切断用孔、消毒液を注入する治療用孔、疾病のある細胞を死滅させる薬を注入する投薬用孔、さらには内部の状態を観察してより確実な採取を可能とする観察用孔とする。【選択図】 図1
