SIDE-STREAM RESPIRATORY GAS MONITORING SYSTEM AND METHOD
First Claim
1. A side-stream respiration monitoring system comprising:
- a flow sensor constructed to be disposed in a respiration flow path; and
a controller connected to the flow sensor and configured to determine a respiration flow value and at least a portion of a composition of the flow and temporally associate the respiration flow value and the portion of the composition on an approximately breath-by-breath basis.
2 Assignments
0 Petitions
Accused Products
Abstract
A side-stream respiration monitoring system includes a sensor, a monitor, and a display. The sensor is constructed to engage respiration flows having a variable flow amounts and acquire a respiration sample from the flow. The monitor is connected to the sensor and configured to determine the amount of respiration flow as well as the amount of several constituents of the respiration flow such as oxygen, carbon dioxide, water, and nitrous oxide. The monitor is also configured to adjust the determined values for ambient environment variations and is self-calibrating with respect to the ambient conditions. The monitor temporally aligns the acquired data to account for dead-space respiration events and physiological respiration modifications such as cardiac events. Information generated by the monitor is communicated to an operator via a display configured to display the real-time respiration performance.
160 Citations
79 Claims
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1. A side-stream respiration monitoring system comprising:
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a flow sensor constructed to be disposed in a respiration flow path; and
a controller connected to the flow sensor and configured to determine a respiration flow value and at least a portion of a composition of the flow and temporally associate the respiration flow value and the portion of the composition on an approximately breath-by-breath basis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A respiration monitoring system comprising:
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a flow sensor constructed to detect a respiration flow and acquire a side-stream sample of the flow;
an analyzer constructed to determine an amount of a gas carried on the respiration flow; and
a controller configured to automatically calibrate the analyzer. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A side-flow respiration monitoring system comprising:
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a sensor for detecting a respiration flow and acquiring a sample of the respiration flow;
a monitor connected to the sensor for determining an amount of oxygen and an amount of carbon dioxide in the respiration flow on approximately a breath-by-breath basis; and
a display connected to the monitor for displaying information associated with the amount of oxygen and carbon dioxide on a common plot. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method of monitoring respiration information comprising the steps of:
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measuring a patient flow and a patient pressure. acquiring a side-stream breath sample;
determining a flow of the side-stream breath sample;
determining a concentration of oxygen and a concentration carbon dioxide in the acquired side-stream breath sample; and
temporally aligning the determined flow and the determined concentrations of oxygen and carbon dioxide on approximately a breath-by-breath basis. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A breath-by-breath analyzer comprising:
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a sensor constructed to engage a respiration flow;
an analyzer connected to the sensor and configured to determine a pressure and at least a portion of a composition of the respiration flow; and
an adapter configured to engage the sensor wherein a first portion of the respiration flow passes through the sensor and a second portion of the respiration flow passes through the adapter. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. A respiration monitoring system comprising:
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an oxygen sensor constructed to detect an oxygen concentration;
a carbon dioxide sensor constructed to detect a carbon dioxide concentration;
a first input constructed to fluidly connect a first gas source to the oxygen and carbon dioxide sensors; and
a second input constructed to fluidly connect a second gas source to the oxygen and carbon dioxide sensors. - View Dependent Claims (64, 65, 66, 67)
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68. A respiration monitoring device comprising:
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at least one valve;
a pump connected to the valve;
an oxygen sensor and a carbon dioxide sensor; and
a control configured to control operation of the valve and the pump for communicating a gas to each of the oxygen sensor and the carbon dioxide sensor to mimic a breath flow and a breath composition. - View Dependent Claims (69, 70, 71, 72, 73)
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74. A physiologic monitor controller comprising:
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an input configured to receive a physiologic signal; and
a correction protocol configured to determine an output by adjusting a value of the input in an amplitude domain and a time domain. - View Dependent Claims (75, 76, 77, 78, 79)
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Specification