Abstract: An optical marker for positioning a medical device outside a body and the medical device are disclosed. The optical marker comprises: a base having a concave or a convex, the concave or the convex being provided with a non-coplanar optical mark(s), and the optical mark(s) being visible on the entire surface of the concave or the convex; and a connecting portion connected to the base and used for connecting with the medical device. In the optical marker, the base provided with the optical mark(s) has a non-planar structure, being able to increase the recognizable angle of the medical device and improve the recognition accuracy and stability.

Abstract: A marker for use in the lung of patients for marking the position of a lesion in the lung, wherein the marker comprises a self-expandable structure capable of self-expanding when released from a constricting device so as to implement marking function. Because the marker for use in the lung of a patient employs the self-expandable structure, when the position of a lesion is detected during a lung examination, the marker can be delivered to the position of the lesion via a catheter or a delivering device and substantively pressed and fixed by the lung when expanded at the lesion positions; as such, the lesion position can be located quickly by a surgeon during a surgery, the surgery time is shortened, the area of resection is reduced, and the post-surgery quality of life is improved for a patient.

Abstract: A marker for use in the lung of patients for marking the position of a lesion in the lung, wherein the marker comprises a self-expandable structure capable of self-expanding when released from a constricting device so as to implement marking function. Because the marker for use in the lung of a patient employs the self-expandable structure, when the position of a lesion is detected during a lung examination, the marker can be delivered to the position of the lesion via a catheter or a delivering device and substantively pressed and fixed by the lung when expanded at the lesion positions; as such, the lesion position can be located quickly by a surgeon during a surgery, the surgery time is shortened, the area of resection is reduced, and the post-surgery quality of life is improved for a patient.