To provide a novel medical instrument which can be securely gripped and fixed without damaging organs, tissues or the like while having a simple structure.SOLUTION: Each of the opposing inner side faces 5a, 5b is provided with twill grooves, and a pinching portion 8 in which a plurality of pyramidal first protrusions 7 delimited by the grooves 6 are arranged and arranged The projection 7 of the holding portion 8 is inserted and fitted into the groove 6 of the opposed holding portion 8 in the closed state and the gap 9 is formed between the bottom surface of the groove 6 and the apex portion 7 a of the projection 7 Keep engaging while maintaining.(FIG.【課題】簡便な構造でありながら、臓器や組織等を傷つけることなく、確実に把持、固定することができる新規の医療用器具を提供すること。【解決手段】対向するそれぞれの内側面5a、5bに、溝6が綾目配設されており、溝6によって区切られた錐体状の第1の突起7が複数整列配置された挟持部8を構成し、この挟持部8の突起7が、閉鎖状態において、対向する挟持部8の溝6内に挿嵌されて、溝6の底面と突起7の頂点部7aとの間に空隙9を維持したまま噛み合う。【選択図】図3
