Surgical, dental, medical, and veterinary apparatus and instruments, artificial limbs, eyes and teeth; orthopedic articles and suture materials. A medical apparatus according to the present discovery includes-: a flexible sheath, an arm section having a bending part capable of bending operation and a first channel capable of inserting a procedure instrument there through, the arm section being disposed to stick out from a tip of the sheath, and an operation stick having a second channel connected to the first channel and a bending operating part connected to the arm section by an operation-transmission member, wherein the operation stick has: a regulation section for regulating movement of the winding operating part; and a falloff-preventive section for engaging with the procedure instrument inserted in the second channel to prevent the method instrument from falling from the operation stick.
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