Methods and devices for controlled delivery

A method for occluding at least one fallopian tube in a human or animal body, comprising,

• a) providing to the uterus of a human or animal a controlled delivery device capable of delivering an effective amount of a composition comprising an occlusive material, wherein the delivery device comprises at least an insertion tube for providing at least one catheter;
• at least one catheter comprising an end structure on a delivery end that maintains the delivery end in at least one uterine cornua and aids in localized delivery of the composition;
• a handle comprising a level and a receptacle for receiving a material cartridge;
• a system plunger controlled by a lock that is reversibly coupled to a control rod, and optionally, a material cartridge containing the composition comprising an occlusive material positioned within the receptacle in the handle;
• b) delivering an effective amount of the composition comprising an occlusive material through and out the at least one catheter at or near the uterine cornua such that the occlusive material occludes the lumen of the fallopian.