Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Reexamination Certificate
1998-11-12
2001-01-23
Weiss, John G. (Department: 3761)
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
C222S153130, C222S402110
Reexamination Certificate
active
06176238
ABSTRACT:
BACKGROUND
This invention relates to a dispenser for dispensing a multiplicity of doses of a substance in powder or granular form contained in a reservoir forming part of the dispenser, this latter being of the type in which to form a dose a shaft must be rotated relative to a part of the dispenser, the shaft having to be substantially vertical while the dose is being formed.
A dispenser of the aforesaid type is described for example in Italian patent application MI96A001448 of the present applicant. Such a dispenser falls within the scope of protection of EP-B0424970 and in addition is provided with a closure and protection adaptor which has to be removed, or opened, to enable the user to gain access to the individual dose dispensed. The presence of said adaptor is particularly useful if the dispenser is an inhaler for medicaments in powder form, and the individual dose to be administered to the patient is so small that the patient is unable to tell whether the dose has been effectively inhaled or not. In this respect, to be able to inhale the dose the patient has to remove or open the adaptor, this requiring a first part of the actual inhaler unit (ie without the adaptor) to be rotated relative to a second part, this automatically resulting in the formation of a dose of medicament withdrawn from a reservoir.
The application or, respectively, the closure of the adaptor restores the initial condition.
The accompanying
FIGS. 1
to
5
illustrate, as an example of a dispenser falling within the scope of MI96A001448, a multi-dose inhaler for medicaments in powder form, provided with a removable adaptor. An English-language translation of Italian patent application no. MI96A001448 is set forth in Appendix A, which is incorporated herein by this reference. These figures basically reproduce the analogous figures of Italian patent application MI96A001448 (however retaining only the reference numerals of interest herein).
SUMMARY OF THE INVENTION
The invention includes a dispenser for dispensing a multiplicity of doses of substance in powder or granular form, said dispenser including a reservoir, a vertically disposed shaft rotatable relative to an adjacent part of the dispenser, the metering of the substance from the reservoir resulting from the rotation of the shaft about its axis, and wherein proper metering of the substance depends on the substantially vertical orientation of the shaft, wherein the dispenser includes a coupling responsive to the orientation of the shaft so as to interfere with relative rotation between the shaft and said part if the shaft does not have substantially vertical orientation.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is a front elevation of said multi-dose inhaler provided with an adaptor, this latter being shown separated from the actual inhaler unit;
FIG. 2
is a side elevation thereof;
FIG. 3
is a front elevation thereof but with the adaptor applied;
FIG. 4
is an exploded perspective view thereof;
FIG. 5
is an enlarged vertical section therethrough without the adaptor, taken on the line
5
—
5
of
FIG. 1
;
FIG. 6
is a perspective view of said shaft taken towards its head;
FIG. 7
is a perspective view of said cover taken from below; and
FIG. 8
is a longitudinal section taken along the axis of the shaft and cover, showing the joint between these latter, the inhaler being inclined to the vertical.
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Ladas & Parry
Miat S.p.A.
Weiss John G.
Weiss, Jr. Joseph F.
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