A permanent acute occlusion implantable device and method are described for immediate occlusion of a body lumen, such as blood vessels and the fallopian tubes of the human female, wherein an balloon expandable lumen occlusion device is placed within the lumen to be occluded. After inflating the balloon, the balloon is withdrawn leaving the expanded occlusion device in the lumen. The device is encased in an occluding impervious sheath and therefore completely occludes the lumen once the device is delivered and anchored into the inner wall of the body lumen.
