Patent ID: 8381721
Filing Date: 2013-02-26
Classification: A61M,A61P

Abstract:
1. A dry powder inhaler, comprising: a dose container disk having a plurality of circumferentially spaced apart dry powder dose containers arranged in first and second concentric rows of different radius; and a piercing mechanism configured to sequentially open a dry powder dose container on the first row then open a dry powder dose container on the second row multiple times during use of the dose container disk, wherein the piercing mechanism comprises first and second elongate piercing members in adjacent radially spaced-apart relationship, wherein each piercing member is capable of movement between piercing and non-piercing positions, wherein each piercing member includes a distal piercing portion and a proximal head portion, wherein the first piercing member is configured to pierce the sealant of a dose container in the first row, and wherein the second piercing member is configured to pierce the sealant of a dose container in the second row.