A method for manufacturing the surgical device for removing a foreign object from a body and a retrieval basket of the device are described. A magnetostrictive element is arranged to move the valve stem towards the valve seat and a spring is arranged to move the valve stem away from the valve seat. The body of inertia comprises a primary part and a secondary part that is coaxial therewith and pivotable thereto. The component framework defines roles providing one or more common interfaces for services of several plug-in components.