Respiratory mask having a vertically adjustable spacer element that limits seal deformation on a wearer's face
US5570689A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1995 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | May 1, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/084
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A respiratory mask including a flexible seal member that is formed to receive nasal and/or oral portions of a user's face. The flexible seal member is adapted to resiliently deform against the facial structure of the user to form a seal therewith when the mask is secured to the user's head by suitable straps or related headgear. The mask further includes a single block-like spacer for limiting deformation of the mask seal when the mask is engaged with the user's face and an adjustment mechanism for adjusting the position of the spacer. A presently preferred adjusting mechanism includes a flexible strap member upwardly extending from the mask and along which the spacer may be conveniently and selectively positioned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.