The present invention relates to an occlusion device for blocking a biological tube, the biological tube being prone to a peristaltic wave having a wave length, and where the occlusion device comprises at least three sections (11, 12, 13), where each section is connected by at least one narrowing (14, 15) to at least one other section. Especially the invention relates to reversible contraception of female and/or male gendered species, which is often achieved by methods of surgery, intervening with the biological tube, which are responsible for transportation of fertility fluids, such as the transportation of spermatozoes or oo-cytes in for example the human reproductive system
