Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1998-05-05
2000-07-04
Weiss, John G.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820014, 12820023, A62B 700, A61M 1100
Patent
active
060823585
ABSTRACT:
An indicating device for indicating the number of metered doses of medicaments that have been dispensed from or remain in a container having a valve stem extending longitudinally therefrom and moveable between an open and closed position. The indicating device includes a base member adapted to be mounted to the container, a cap member moveably connected to the base member, an indicator member rotatably mounted to the cap member and an indicating mechanism adapted to rotate the counter member an incremental amount upon a predetermined number of axial movements of the cap member relative to the base member. A preferred embodiment of the indicating device includes a ratchet wheel, a drive member selectively engaging the indicating member, a pawl selectively engaging the ratchet wheel, and a non-return member adapted to selectively engage the ratchet wheel so as to maintain a unidirectional rotation of the ratchet wheel. A method for indicating the number of metered doses dispensed from or remaining in the container comprises moving the cap member toward and away from the base member, engaging the ratchet wheel with the pawl and engaging the indicating member with the drive member. A method of assembling an inhalation device including an indicating device is also provided.
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p
Foley Martin P.
Grychowski Jerry R.
Scarrott Peter Mykola
Schmidt James Nick
1263152 Ontario Inc.
Martin Todd M.
Weiss John G.
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