| 摘要 |
An infrared reflectance oximetry device and method for measuring the ratio of oxygenated to deoxygenated hemoglobin within the circulation of the tissue in the brain of a subject. One embodiment is an intraventricular catheter (12) that contains an infrared oximetry source (30) and an oximetry receiver (34). A second embodiment is a bolt (106) that is screwed into the skull and mounted on the dural membrane. A third embodiment is a flexible, flat circuit board (201) which can be placed between the dural membrane and the inner table of the skull. These devices contain an infrared oximetry source and an oximetry receiver. Signals from the oximetry receiver are used to graphically represent the percentage of certain blood constituents to be measured, thus monitoring the metabolic activity of the subject. |
