Inhalation exerciser
US4363328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1980 |
| Grant date | Dec 14, 1982 |
| Priority date | — |
| Expiry date | Nov 5, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/093
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An inhalation device for use in breathing exercises is described. The exerciser includes a thin-walled bellows whose upper end is attached to a top housing member and whose lower end deflects upward upon withdrawal of air from an opening in the upper end of the bellows. Deflection of the bellows allows accurate measurement of the volume of air inhaled by a patient and a true indication whether an inhaled breath is being held. Slotted support arms connecting the top housing member and a bottom housing member permit collapse of the device for storage and shipment of the exerciser as a compact unit. A weight attached to the lower end of the bellows provides a biasing force to assure return of the bellows to a fully extended position even after long-term storage of the device in collapsed form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.