as shown in fig4 a when there is no tension applied to the inner occlusive tape 13 the occlusive device is in the deactivated state and the outer sheath 12 may not have enough pressure to occlude the urethra 3 therefore the urethra 3 is open and allows a fluid to flow through when a tension is applied to the inner occlusive tape 13 the device is in an activated state and the outer sheath 12 may collapse along its length as shown in fig3 b which also leads to the shape of the cross section of the space 200 of the outer sheath 12 to change as shown in fig4 b compared to the shape of the deactivated state as shown in fig4 a as a result the outer sheath 12 may be pressed against the urethra 3 by the occlusive tape 13 so as to occlude the urethra 3 and prevent fluid flowing through the urethra 3 the outer surface 17 of the outer sheath 12 which is opposite to the surface of the outer sheath 12 that contracts the urethra 3 may be configured to have a flexible sizing band the sizing band may encircle the entire length of the outer sheath 12 or it may encircle only a portion of the outer sheath 12 the outer.