The suturing device (2) has first and second gripping members (11, 12). The suture needle (110) is fitted in the recess (11b) of the first gripping member (11) and the suture needle (110) is fixed to the first gripping member (11) by the first needle fixing member (21) There. A suture thread (100) is fixed to the suture needle (110). When the gripping members (11, 12) are closed, the suturing needle (110) penetrates through the tissue (P1) sandwiched between the gripping members (11, 12) and the dent (12b) of the second gripping member ). When the suture needle (110) is fixed to the second gripping member (12) with the second needle fixing member (22) and the gripping members (11, 12) are opened, the suturing needle (110) is pulled from the tissue And the suture (100) passes through the tissue (P1). The second gripping member (12) has a locking portion (28) for locking the suture (100) at the distal end portion thereof. By using the locking part (28), a knot can be formed on the suture thread (100) without using another surgical tool.縫合器(2)は第一及び第二把持部材(11、12)を有する。第一把持部材(11)の窪み(11b)には縫合針(110)がはまっていて、縫合針(110)は第一針固定部材(21)で第一把持部材(11)に固定されている。縫合針(110)には縫合糸(100)が固定されている。把持部材(11、12)が閉じられると、縫合針(110)は、把持部材(11、12)間に挟まれた組織(P1)を貫通し、第二把持部材(12)の窪み(12b)に入り込む。縫合針(110)が第二針固定部材(22)で第二把持部材(12)に固定され、把持部材(11、12)が開かれると、縫合針(110)は組織(P1)から引き抜かれ、縫合糸(100)が組織(P1)を貫通する。第二把持部材(12)は先端部に、縫合糸(100)を係止するための係止部(28)を有する。係止部(28)を使うことで、別の術具を使うことなく、縫合糸(100)に結び目を形成できる。
