Which comprises a housin

The utility model relates to a which comprises a housin, is equipped with the mechanical type coding structure who contains coding information on the shell of biopsy needle, coding information is corresponding with the specification of biopsy needle. The penetrating elongated slot of mechanical type coding structure for digging many parallel arrangement on the shell of biopsy needle. The interval information between a plurality of elongated slots or the groove width information of a plurality of elongated slots form coding information. The utility model discloses can ensure to correspond different biopsy organ users and use the exact biopsy needle, guarantee the reliability and the security of operation, avoid taking place to cause medical malpractice's possibility with wrong biopsy needle. 本实用新型为种用于电动活检装置的活检针，活检针的外壳上设有包含编码信息的机械式编码结构，编码信息与活检针的规格相对应。机械式编码结构为开凿在活检针的外壳上的多条平行排列的通透的长槽。多个长槽之间的间距信息或者多个长槽的槽宽信息形成编码信息。本实用新型能确保对应不同的活检器官用户使用正确的活检针，保证操作的可靠性和安全性，避免发生用错活检针造成医疗事故的可能性。