The paper present a type of nano and manipulators which are based on structure of the magnetic bacterium, which is described. There are presented a theoretical study and analisys of the micromechanic circuit with elastic and damper elements, the micromagnetic circuit ( with micromagnetic specific characteristics) and also the electromechanic analogy aspects of the magnetic bacterium. The authors propose some nano and micromanipulators based on the structure of the chain of magnetic bacterium which include the nano or micro magnetic particles. The calculus, electromechanical modeling and experiments of this nano or microstructure what work and in the fluid medium are presented. There are evidenced the possible aspects on microrobotics and application field.