Diagnosis of peripheral vascular disease using oxygen saturation
AssigneeViOptix, Inc.
InventorsMohamed Elmandjra, William O'Keefe, Jian Min Mao, Robin Bush, Linda Christenson
Life of this patent
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Abstract
Techniques for diagnosing peripheral vascular disease using oxygen saturation are provided. Changes in oxygen saturation in tissue during recovery from induced ischemia are measured. The changes are then utilized to diagnose whether a patient has peripheral vascular disease.
Claims16
A method of diagnosing peripheral vascular disease, comprising:
- measuring oxygen saturation in tissue of a patient during recovery from ischemia;
- analyzing the oxygen saturation in the tissue during the recovery;
- and
- diagnosing the patient as having peripheral vascular disease according to changes in the oxygen saturation in the tissue during the recovery.
An apparatus for diagnosing peripheral vascular disease, comprising:
- a device to cause ischemia in tissue
- a probe that measures oxygen saturation in the tissue of a patient during recovery from induced ischemia;
- a computer, coupled to the probe, that analyzes the oxygen saturation in the tissue during the recovery and diagnoses the patient as having peripheral vascular disease according to the oxygen saturation in the tissue during the recovery.
A method of diagnosing peripheral vascular disease, comprising:
- measuring oxygen saturation in tissue of a patient during recovery from ischemia;
- calculating a rate of change of oxygen saturation during the recovery;
- and
- diagnosing the patient as having peripheral vascular disease if the rate of change crosses a threshold.
An apparatus for diagnosing peripheral vascular disease, comprising:
- a probe that measures oxygen saturation in tissue of a patient during recovery from ischemia;
- a computer, coupled to the probe, that calculates a rate of change of oxygen saturation during the recovery and diagnoses the patient as having peripheral vascular disease if the rate of change crosses a threshold.
A method of diagnosing peripheral vascular disease, comprising:
- measuring oxygen saturation in tissue of a patient during recovery from ischemia;
- calculating a time for oxygen saturation to recover a specified percentage during the recovery;
- and
- diagnosing the patient as having peripheral vascular disease if the time for oxygen saturation to recover crosses a threshold.
An apparatus for diagnosing peripheral vascular disease, comprising:
- a probe that measures oxygen saturation in tissue of a patient during recovery from ischemia;
- a computer, coupled to the probe, that calculates a time for oxygen saturation to recover a specified percentage during the recovery and diagnoses the patient as having peripheral vascular disease if the time for oxygen saturation to recover crosses a threshold.
Dependencies are inferred from the claim text.