Metabolic and cardiopulmonary monitor
First Claim
1. A wearable system for monitoring metabolic and/or cardiopulmonary parameters of a subject, comprising:
- a control unit adapted to be worn by the subject, configured to analyze a breath gas sample obtained from a breath stream of the subject; and
a sampling module configured to operably communicate the breath gas sample from the breath stream of the subject to the control unit, the control unit configured to generate one or more signals based on an analysis of the breath gas sample, the signals being at least partially reflective of at least one metabolic and/or cardiopulmonary parameter of the subject;
wherein the sampling module comprises;
an interfacing component configured for at least partial insertion in a nasal cavity or an oral cavity of the subject;
one or more sensory elements coupled to the interfacing component configured to measure one or more physiological or dimensional parameters of the nasal cavity or the oral cavity of the subject;
a tube with a lumen;
one or more sensing membranes positioned within the lumen of the tube; and
one or more shrouds surrounding at least a portion of the tube where the sensing membranes are positioned, the one or more shrouds configured to reduce ambient light from reaching the sensing membranes, the one or more shrouds configured to be at least partially opaque over one or more designated wavelengths of interest for exciting the one or more sensing membranes;
the tube providing a first path for an inbound breath gas sample from a subject side of the sampling module towards the one or more sensing membranes and a second path for an outbound breath gas sample to continue past the one or more sensing membranes towards the control unit;
wherein the control unit comprises;
an emitter configured to deliver an excitation signal to the one or more sensing membranes causing at least one of the one or more sensing membranes to emit a fluorescent signal;
a detector configured to collect at least a portion of the emitted fluorescent signal;
wherein the sampling module further comprises an identification component comprising one or more identification markers and calibration information; and
wherein the control unit comprises a system for reading the identification component from the sampling module such that the identification markers and calibration information are utilized by the control module to estimate at least one property of the one or more sensing membranes, and to utilize the estimated at least one property to calibrate the emitted fluorescent signal.
3 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for monitoring and/or assessing metabolic and/or cardiopulmonary parameters of a subject are disclosed. Systems and methods for high speed monitoring of metabolic parameters of a subject in a substantially unrestricted setting are disclosed. Further disclosed are wearable systems and methods for substantially unobtrusive monitoring of a breath stream from a subject. Also disclosed are wearable systems and methods for real-time monitoring of the respiratory function and/or one or more disease states of a subject. Data systems to coordinate simultaneous monitoring of one or more metabolic and/or cardiopulmonary parameters of a plurality of subjects are also disclosed.
29 Citations
31 Claims
-
1. A wearable system for monitoring metabolic and/or cardiopulmonary parameters of a subject, comprising:
-
a control unit adapted to be worn by the subject, configured to analyze a breath gas sample obtained from a breath stream of the subject; and a sampling module configured to operably communicate the breath gas sample from the breath stream of the subject to the control unit, the control unit configured to generate one or more signals based on an analysis of the breath gas sample, the signals being at least partially reflective of at least one metabolic and/or cardiopulmonary parameter of the subject; wherein the sampling module comprises; an interfacing component configured for at least partial insertion in a nasal cavity or an oral cavity of the subject; one or more sensory elements coupled to the interfacing component configured to measure one or more physiological or dimensional parameters of the nasal cavity or the oral cavity of the subject; a tube with a lumen; one or more sensing membranes positioned within the lumen of the tube; and one or more shrouds surrounding at least a portion of the tube where the sensing membranes are positioned, the one or more shrouds configured to reduce ambient light from reaching the sensing membranes, the one or more shrouds configured to be at least partially opaque over one or more designated wavelengths of interest for exciting the one or more sensing membranes; the tube providing a first path for an inbound breath gas sample from a subject side of the sampling module towards the one or more sensing membranes and a second path for an outbound breath gas sample to continue past the one or more sensing membranes towards the control unit; wherein the control unit comprises; an emitter configured to deliver an excitation signal to the one or more sensing membranes causing at least one of the one or more sensing membranes to emit a fluorescent signal; a detector configured to collect at least a portion of the emitted fluorescent signal; wherein the sampling module further comprises an identification component comprising one or more identification markers and calibration information; and wherein the control unit comprises a system for reading the identification component from the sampling module such that the identification markers and calibration information are utilized by the control module to estimate at least one property of the one or more sensing membranes, and to utilize the estimated at least one property to calibrate the emitted fluorescent signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A method for monitoring a disease state of a subject comprising:
-
communicating, utilizing a sampling module, a breath gas sample from a breath stream of the subject to a control unit adapted to be worn by the subject; monitoring and analyzing the breath gas sample utilizing the control unit; and generating, utilizing the control unit, one or more signals based on the analysis, the signals being at least partially reflective of at least one metabolic and/or cardiopulmonary parameter of the subject; wherein the sampling module comprises; a tube with a lumen; one or more sensing membranes positioned within the lumen of the tube; and one or more shrouds surrounding at least a portion of the tube where the one or more sensing membranes are positioned, the one or more shrouds configured to reduce ambient light from reaching the one or more sensing membranes, the one or more shrouds configured to be at least partially opaque over one or more designated wavelengths of interest for exciting the one or more sensing membranes; the tube providing a first path for an inbound breath gas sample from a subject side of the sampling module towards the one or more sensing membranes and a second path for an outbound breath gas sample to continue past the one or more sensing membranes towards the control unit; wherein the control unit comprises; an emitter configured to deliver an excitation signal to the one or more sensing membranes causing the one or more sensing membranes to emit a fluorescent signal; and a detector configured to collect at least a portion of the emitted fluorescent signal; a micropump in fluid communication with the sampling module, the micropump configured to operably draw the breath gas sample from the breath stream of the subject; and one or more adjunct sensors, the one or more adjunct sensors comprising at least one of a flow sensor and a differential pressure sensor, the one or more adjunct sensors being configured; to monitor a fluid state proximate the one or more sensing membranes; to generate an output forming a compensation signal for calibrating readings of the one or more sensing membranes; and to generate a pump control signal adjusting operation of the micropump to maintain a designated operable flow rate of the breath gas sample; wherein the sampling module further comprises an identification component comprising one or more identification markers and calibration information; wherein analyzing the breath gas sample with the control unit comprises utilizing the identification markers and calibration information from the sampling module to estimate at least one property of the one or more sensing membranes and utilizing the estimated at least one property to calibrate the emitted fluorescent signal; and wherein the sampling module includes an interfacing component configured for at least partial insertion in a nasal cavity or an oral cavity of the subject, and the method further includes measuring one or more physiological or dimensional parameters of the nasal cavity or the oral cavity of the subject with one or more sensory elements coupled to the interfacing component. - View Dependent Claims (28, 29)
-
-
30. A wearable system for monitoring metabolic and/or cardiopulmonary parameters of a subject, comprising:
-
a control unit adapted to be worn by the subject, configured to analyze a breath gas sample obtained from a breath stream of the subject; and a sampling module configured to operably communicate the breath gas sample from the breath stream of the subject to the control unit, the sampling module including; an interfacing component configured for at least partial insertion in a nasal cavity or an oral cavity of the subject; one or more sensory elements coupled to the interfacing component configured to measure one or more physiological or dimensional parameters of the nasal cavity or the oral cavity of the subject; a tube with a lumen; one or more sensing membranes positioned within the lumen of the tube; and the tube providing a first path for an inbound breath gas sample from a subject side of the sampling module towards the one or more sensing membranes and a second path for an outbound breath gas sample to continue past the one or more sensing membranes towards the control unit; and wherein the control unit comprises; an emitter configured to deliver an excitation signal to the one or more sensing membranes causing at least one of the one or more sensing membranes to emit a fluorescent signal; and a detector configured to collect at least a portion of the emitted fluorescent signal. - View Dependent Claims (31)
-
Specification