초록 ▼

A system and method for automatically selecting an appropriate oxygen dose to maintain a desired blood oxygen saturation level is disclosed. The system and method are particularly suited for use with ambulatory patients having chronic obstructive lung disease or other patients requiring oxygenation

A system and method for automatically selecting an appropriate oxygen dose to maintain a desired blood oxygen saturation level is disclosed. The system and method are particularly suited for use with ambulatory patients having chronic obstructive lung disease or other patients requiring oxygenation or ventilation. In one embodiment, the method includes delivering a first oxygen dose to the patient while repeatedly sequencing through available sequential oxygen doses at predetermined time intervals until the current blood oxygen saturation level of the patient attains the desired blood oxygen saturation level. The method then continues with delivering the selected oxygen dose to the patient so as to maintain the desired blood oxygen saturation level.

대표청구항 ▼

A system for maintaining a desired blood oxygen saturation level within a first predetermined range of values having an upper limit and a lower limit so as to reduce variation of the blood oxygen saturation level, the system including an electronic control unit (ECU) having memory, a pulse oximeter

A system for maintaining a desired blood oxygen saturation level within a first predetermined range of values having an upper limit and a lower limit so as to reduce variation of the blood oxygen saturation level, the system including an electronic control unit (ECU) having memory, a pulse oximeter attached to a patient for measuring a current blood oxygen saturation level of the patient, and oxygen delivery apparatus controlled by the ECU for delivering a selected oxygen dose to the patient, the oxygen delivery apparatus having a plurality of sequential oxygen doses ranging from a first oxygen dose to a second oxygen dose, the system comprising: means for delivering the second oxygen dose to the patient while repeatedly sequencing through the plurality of sequential oxygen doses beginning with the first oxygen dose and proceeding to an adjacent oxygen dose in the sequence after a predetermined time interval has elapsed until the current blood oxygen saturation level of the patient attains the desired blood oxygen saturation level at which point a corresponding oxygen dose is selected from the plurality of sequential oxygen doses; means for delivering the selected oxygen dose to the patient so as to maintain the desired blood oxygen saturation level; and an alarm for indicating when a predetermined number of oscillations between any two nonadjacent oxygen doses is detected.