A medical capsule housing includes first and second outer members made of a resin material, both having an opening at one end. The first and second outer members are thermally welded by ultrasonic welding at an abutting portion. The abutting portion includes a sharp edged line portion which forms the...http://www.google.fr/patents/US7931584?utm_source=gb-gplus-shareBrevet US7931584 - Medical capsule housing formed by thermal welding
