Automatically adjusting headgear for patient interface
US10456546B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2014 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Sep 4, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/0294
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A headgear for securing a mask to a user's face is described. The headgear requires a first load force to elongate the headgear and, when fitted to a user, applies a balanced fit force that substantially equals a load force applied to the headgear during respiratory therapy. In some embodiments, the headgear includes an elastic portion configured to provide a retraction force, a non-elastic portion configured to be inelastic in comparison to the elastic portion, and a restriction mechanism connected to the non-elastic portion and to the elastic portion. The restriction mechanism is configured to apply a first resistance force to the user's head on elongation of the headgear and a second resistance force to the user's head on retraction of the headgear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.