Patent ID: 11963757
Assignee: TREYMED, INC.
Field: Measurement (Instruments)
Classification: CPC A  G | IPC A

Claim 13:
14. A method of manipulating respiration performance data in a side-stream respiration monitoring system, the method comprising:
detecting for presence of a physiological respiration event signal in at least one breath cycle of a patient;
introducing a non-patient originated alignment signal that is generated by an analyzer to a respiration flow passing through a sensor during a portion of the at least one breath cycle when presence of the physiological respiration event signal is not detected in a selected number of samples that is greater than one of preceding respiration samples;
determining a flow rate and at least a portion of a composition of a respiration flow, including an oxygen concentration and a carbon dioxide concentration, on a breath-by-breath basis, from a flow sample and a pressure signal communicated to the analyzer from the respiration flow passing through the sensor; and
temporally associating in a time domain the determined flow rate and the determined portion of the composition of the respiration flow on the breath-by-breath basis as a function of information associated with the physiological respiration event signal for the at least one breath cycle when the physiological respiration event signal is detected and the non-patient originated alignment signal delivered to the sensor by the analyzer during the portion of the at least one breath cycle when the physiological respiration event signal is not detected in the selected number of samples of preceding respiration samples of breath cycles;
generating a time-aligned respiration output providing an alignment between the flow rate and the portion of the composition of the respiration flow from the temporally associated flow rate and portion of the composition of the respiration flow; and
determining a temporal offset associated with the alignment of the determined flow rate and concentrations of oxygen and carbon dioxide from the determined at least a portion of the composition of respiration flow on a breath-by-breath basis and the presence of one of the physiologic respiration event signal and the non-patient originated alignment signal in the at least one breath cycle and passing through the sensor and communicated to the analyzer in the time domain from a comparison of at least one of a start of a pressure signal detected by the analyzer from the respiration flow passing through the sensor to a start of a gas composition change and a maximum of a pressure signal to a minimum of a gas composition change from the determined portion of the composition of the respiration flow on the breath-by-breath basis passing through the sensor to the analyzer associated with the breath-by-breath basis.