Medical microprocessor system and method for providing a ventilation indexed oximetry value
US6609016B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jul 28, 2000 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | Jun 23, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/4818
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Pathologic relationship trending of an oxygen saturation time series relative to a corresponding ventilation time series is identified used a medical microprocessor system, and an increasing difference between the two time series is detected and displayed. That increasing difference is provided for evaluating a patient and for detecting early evidence of serious illness. A patient's normal predicted time ventilation may also be calculated using one or more of the patient's height, weight, sex, and body surface area. A relationship is determined between measured blood oxygen saturation, measured time ventilation, and predicted time ventilation. The microprocessor preferably determines the presence of an interval of steady state ventilation and measures the timed ventilation during that interval. The microprocessor also measures the oxygen saturation corresponding to that determined, steady state ventilation interval. The microprocessor then calculates a Ventilation Oximetry Index (VOI) of minute ventilation and oxygen saturation as measured by pulse oximetry. The VOI assists the medical clinician in judging the potential effect of the measured minute ventilation on the oxygen satura…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.