PROBLEM TO BE SOLVED: To provide a medical suture instrument in which workability and operability are greatly improved.SOLUTION: A suture instrument 100, by means of a loop feedback mechanism 30 and a suture thread feeding mechanism 40, propagates the movement of a binding member holding part 10 to a loop forming part 80 and a suture thread 1, delivers a loop 82 from the tip end of a loop introducing needle 60, and delivers the suture thread 1 from the tip end of a suture thread introducing needle 70.
