Pulse oximeter with sigma-delta converter
December 18, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCalibrated optical oximeter probe Calibrated optical oximeter probe Calibrated optical oximeter probe Method and apparatus for detecting optical pulses Sensor having cutaneous conformance Method and apparatus for calculating arterial oxygen saturation Method and apparatus for offsetting baseline portion of oximeter signal Method and apparatus for detecting optical pulses Method and apparatus for detecting optical pulses Method and apparatus for detecting optical pulses InventorsApplicationNo. 769148 filed on 12/18/1996US Classes:600/323Oxygen saturation, e.g., oximeterExaminersPrimary: O'Connor, Cary E.Assistant: Winakur, Eric F. Attorney, Agent or FirmInternational ClassA61B 005/00AbstractA preferred oximeter detects the transillumination by red and infrared light of a portion of an in vivo subject and produces analog signals representative thereof on two channels. Sigma-delta modulators sample the analog signals on each channel. A digital filter processor digitally filters the sample signals from both modulators to produce respective digital signals with multi-bit resolution.Field of SearchDetermining blood constituentOxygen saturation, e.g., oximeter Separation of ac/dc components in signal And other cardiovascular parameters Detects constituents while excluding components (e.g., noise) Oximeters Differential encoder and/or decoder (e.g., delta modulation, differential pulse code modulation) | |
