Apparatus for determining respiratory condition
US9848831B2 · kind B2 · utility
5Cited by
8References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 23, 2013 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Nov 16, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/502
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for determining a respiratory condition, the apparatus includes: a signal acquirer which is configured to acquire a signal waveform corresponding to a respiratory flow of a subject; a differential calculator which is configured to acquire a differential waveform which is obtained by performing differentiation of the signal waveform; and a first determiner which is configured to determine that inspiratory flow limitation occurs in the subject, when the differential waveform satisfies a predetermined condition in a portion of the signal waveform, which corresponds to inspiration of the subject.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.