Occlusion device

Medical devices and methods for forming the medical devices are disclosed in the present application. In one illustrative example an occlusion balloon comprises an outer balloon member, and an inner balloon member having an inner wall and an outer wall and extending through at least a portion of the outer balloon member, in at least some examples, when forces acting on the inner wall of the innerballoon member equal forces acting on the outer wall of the inner balloon member, the inner balloon member defines a lumen. 在本申请中公开了医疗装置及用于形成医疗装置的方法。在个说明性的实例中，封堵球囊包括：外球囊构件、和具有内壁和外壁并且延伸通过至少部分的外球囊构件的内球囊构件；至少在些实例中，当作用于内球囊构件的内壁上的力等于作用于内球囊构件的外壁上的力时，内球囊构件限定内腔。