Title:
METERING DEVICE
Document Type and Number:
WIPO Patent Application WO1993016748
Kind Code:
A3
Abstract:
The invention provides an inhaler 140 for delivering a substance in a finely divided form. The inhaler 140 comprising an air intake and an inhalation passage 144 communicating with the air intake. A receptacle 145 in combination with a metering device having first and second end elements sealing against the inner walls of the receptacle so as to define an intermediate dosing space loaded with a desired volumetric dose of the substance is provided. The relative dimensions of the metering device and receptacle 145 are such that the device has a tendency to remain in the receptacle unless actively urged out of it. Indexing means 146 operate to move the receptacle into a position in or adjacent the inhalation passage and means are provided for urging the metering device at least partially out of the receptacle so as to release the dose of substance contained in the receptacle into the inhalation passage when the receptacle occupies its position in or adjacent the inhalation passage 144.
Inventors:
BRAITHWAITE PHILIP WILSON (GB)
Application Number:
PCT/GB1993/000335
Publication Date:
December 23, 1993
Filing Date:
February 18, 1993
Export Citation:
Assignee:
INNOVATA BIOMED LTD (GB)
International Classes:
A61M15/00; B65D83/06; A61M13/00; G01F11/12; G01F11/18; A61M11/00; (IPC1-7): A61M15/00; G01F11/18; B65D83/04
Domestic Patent References:
| WO1992000771A1 | 1992-01-23 |
Foreign References:
| DE3243731A1 | 1984-05-30 | |||
| US4635829A | 1987-01-13 | |||
| DE1498398A1 | 1969-01-30 | |||
| EP0448204A1 | 1991-09-25 | |||
| EP0424790A2 | 1991-05-02 | |||
| FR2662936A1 | 1991-12-13 | |||
| FR2516387A1 | 1983-05-20 |
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