Adaptive control of neonatal fractional inspired oxygen
US4889116A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1987 |
| Grant date | Dec 26, 1989 |
| Priority date | — |
| Expiry date | Nov 17, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/205
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An adaptive controller for delivering fractional inspired oxygen to a patient. The controller utilizes a pulse oximeter connected by an optical sensor to the patient for measuring the patient's blood hemoglobin saturation and pulse rate. Signals from the oximeter are used by a calculator for determining the fractional inspired oxygen level to be delivered to the patient. The calculated percentage of oxygen is provided to the patient so that the gas taken in by the patient automatically causes the blood in the patient to reach a predetermined hemoglobin saturation level which adapts to the patient's requirements. The calculator is programmed to determine when there is an excess deviation of the patient's pulse rate. When an excess deviation is detected, the fractional inspired oxygen level to the patient is fixed until the excess deviation of the pulse rate has been terminated. A depressed respiration level can also be detected which causes a preset higher percentage of oxygen to be supplied to the patient until the depressed respiration of the patient has been terminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.