A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/71
A61M 15/00 (2006.01)
Patent
CA 1054890
INFLATION DEVICE ABSTRACT OF THE DISCLOSURE An inhalation device having means to engage the free end of a powdered medicament- holding capsule as the capsule is pierced to provide outlet ports for the powdered medi- cament held therein. Such engagement ensures that the capsule is completely seated in the rotary member on which it is supported and thus ensures that the outlet ports are posi- tioned at the desired locations adjacent the shoulder of the capsule. Additionally, such engagement enables the piercing opera- tion to be conducted in any orientation of the inhalation device. The rotary member, which supports the capsule during inhalation, is itself supported by a shaft having a polygon shaped base having n sides. The rotary member has a hollow sleeve which fits over the shaft, the sleeve having a polygon shaped inner surface having at least n + 1 sides. During inhalation which causes the rotary member to spin about he supporting shaft, contact of the adjacent polygon shaped surfaces with each other positively causes the walls of the capsule to undergo repeated changes of radial acceleration whereby the powdered medicament is dispersed from the capsule.
301467
Herd Allen K.
Lax Ronald G.
Fisons Corporation
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