Patient ventilator
US4003377A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1975 |
| Grant date | Jan 18, 1977 |
| Priority date | — |
| Expiry date | Aug 21, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2016/0024
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved patient ventilator for providing a mode of operation wherein mandatory breaths are supplied to a patient intermittently, and wherein those mandatory breaths are synchronized with the patient's normal breathing cycle. An adjustable timer provides an output signal for controlling the duration between mandatory breaths, and a delay circuit prevents the output signal from the timer from initiating the mandatory breath for a predetermined delay period to permit the patient to initiate that breath himself. The intermittent mandatory breaths are made "mandatory" by closing off an exhalation valve while a fixed quantity or pressure level of oxygen is supplied to the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.