A permanent acute occlusion implantable device for sterilization of human female and method are described for immediate occlusion of the fallopian tubes of the human female, wherein an structure having an a shape to the normal anatomy of the ostium of the fallopian tube device consisting of a sealing segment is placed to seal the ostium of the fallopian tube. The sealing segment of the device is encased in an elastomeric material to provide the sealing action once the device is delivered into the ostium of the fallopian tubes. The occlusion device is held in place due to the spring action of the intermediate connecting segment which in turn is connected to an expanding anchoring segment. The occlusion device is delivered to the final location via a delivery sheath which is threaded through a hysteroscope.
