An intravenous (IV) pump is disclosed. The IV pump includes a housing, a permanent magnet, an electromagnet, and a switch configured to selectably energize or de-energize the electromagnet. The permanent magnet generates a magnetic field and the electromagnet, when energized, generates a magnetic field that approximately cancels the magnetic field of the permanent magnet.本發明揭示出一種靜脈內(IV)泵。該IV泵包括一外罩、一永久磁鐵、一電磁鐵及一經組裝以選擇性對該電磁鐵賦能或去除能量之開關。該永久磁鐵產生一磁場,及該電磁鐵當賦能時產生一大約抵消該永久磁鐵的磁場之磁場。20...泵取模組24...卡匣26...磁敏性元件28...凹處30...永久磁鐵40...電磁鐵42...磁場44...電源46...開關48...線圈
