Multi-sensor device for cardiopulmonary management
A cardiopulmonary management system includes a multi-sensor device and a controller. The multi-sensor device includes an elongated body having a first end and a second end, a first electrode disposed at the first end of the body, a second electrode disposed at the second end of the body, an electrical circuitry disposed near a middle of the body, and a sound sensor. The multi-sensor device is configured to be disposed on a skin of a subject and to measure cardiopulmonary parameters from the subject. The controller is configured to derive a score of sound change, heart rate change, thoracic impedance change, respiratory rate change, QRS wavelength change, QT interval change, electromechanical activation time change, and left ventricular systolic time change based on the measured cardiopulmonary parameters. The controller is further configured to control an operation of the system when the derived score is greater than a threshold.
1 . A cardiopulmonary management system, comprising:
a multi-sensor device; and
a controller,
wherein the multi-sensor device includes an elongated body having a first end and a second end, a first electrode disposed at the first end of the elongated body, a second electrode disposed at the second end of the elongated body, an electrical circuitry including the controller disposed near a middle of the elongated body, and a sound sensor,
the multi-sensor device is configured to be disposed on a skin of a subject and to measure cardiopulmonary parameters from the subject,
the controller is configured to derive a score of sound change, heart rate change, thoracic impedance change, respiratory rate change, QRS wavelength change, QT interval change, electromechanical activation time change, and left ventricular systolic time change based on the measured cardiopulmonary parameters,
the controller is further configured to control an operation of the system when the derived score is greater than a threshold,
the elongated body of the multi-sensor device is adapted to extend in a horizontal direction from one armpit to another armpit across an entire chest of the subject
the sound sensor is spaced from the elongated body in a vertical direction,
the system further comprises an extension extending across the middle of the elongated body,
wherein the extension has a first end and a second end, the first end and the second end of the extension are on opposite sides of the elongated body in the vertical direction such that the first end of the extension is above the elongated body and the second end of the extension is below the elongated body, the sound sensor is disposed at the second end of the extension, and a contact charging point is disposed at the first end of the extension.
2 . The system according to claim 1 , wherein the cardiopulmonary parameters include thoracic impedance, electrocardiogram, and heart sounds.
3 . The system according to claim 2 , wherein the sound sensor is adapted to be disposed on the skin of the subject near a cardiac apex and is configured to measure the heart sounds.
4 . The system according to claim 1 , wherein the sound change is a change of a ratio of an intensity of a third heart sound (S3) to an intensity of a first heart sound (S1) when the S3 is detected by the sound sensor.
5 . The system according to claim 1 , wherein the multi-sensor device further includes a third electrode disposed at the first end of the elongated body, and a fourth electrode disposed at the second end of the elongated body.
6 . The system according to claim 5 , wherein the first electrode and the second electrode are aligned with each other in a substantially horizontal direction, the third electrode and the fourth electrode are aligned with each other in a substantially horizontal direction, a distance between the first electrode and the third electrode ranges from at or about two centimeters to at or about four centimeters.
7 . A method of controlling an operation of a cardiopulmonary management system, the system including a multi-sensor device and a controller; the multi-sensor device including an elongated body having a first end and a second end, a first electrode disposed at the first end of the elongated body, a second electrode disposed at the second end of the elongated body, an electrical circuitry including the controller disposed near a middle of the elongated body, and a sound sensor; the method comprising:
positioning the multi-sensor device on a skin of a subject;
spanning the elongated body of the multi-sensor device across a chest of the subject;
sensing cardiopulmonary parameters from the subject;
deriving a score of sound change, heart rate change, thoracic impedance change, respiratory rate change, QRS wavelength change, QT interval change, electromechanical activation time change, and left ventricular systolic time change based on the measured cardiopulmonary parameters; and
controlling the operation of the system when the derived score is greater than a threshold,
wherein the elongated body of the multi-sensor device extends in a horizontal direction from one armpit to another armpit across an entire chest of the subject, the sound sensor is spaced from the elongated body in a vertical direction,
the system further comprises an extension extending across the middle of the elongated body,
wherein the extension has a first end and a second end, the first end and the second end of the extension are on opposite sides of the elongated body in the vertical direction such that the first end of the extension is above the elongated body and the second end of the extension is below the elongated body, the sound sensor is disposed at the second end of the extension, and a contact charging point is disposed at the first end of the extension.
8 . The method according to claim 7 , wherein the cardiopulmonary parameters include thoracic impedance, electrocardiogram, and heart sounds.
9 . The method according to claim 8 , further comprising:
positioning the sound sensor on the skin of the subject near a cardiac apex, and
sensing the heart sounds by the sound sensor.
10 . The method according to claim 7 , wherein the sound change is a change of a ratio of an intensity of a third heart sound (S3) to an intensity of a first heart sound (S1) when the S3 is detected by the sound sensor.
11 . The method according to claim 7 , wherein the multi-sensor device further includes a third electrode disposed at the first end of the elongated body, and a fourth electrode disposed at the second end of the elongated body.
12 . The method according to claim 11 , wherein the first electrode and the second electrode are aligned with each other in a substantially horizontal direction, the third electrode and the fourth electrode are aligned with each other in a substantially horizontal direction, a distance between the first electrode and the third electrode ranges from at or about two centimeters to at or about four centimeters.
13 . The method according to claim 7 , further comprising:
positioning a first pad between the first electrode and the skin of the subject in a direction perpendicular to the horizontal direction and the vertical direction; and
positioning a second pad between the second electrode and the skin of the subject in the direction perpendicular to the horizontal direction and the vertical direction.
14 . The method according to claim 7 , further comprising:
capturing, by a camera, an image of the subject;
displaying the captured image on a display device;
indicating a first location, a second location, and a third location on the displayed image;
positioning and securing the first end of the elongated body of the multi-sensor device at a first position corresponding to the first location on the skin of the subject;
positioning and securing the second end of the elongated body of the multi-sensor device at a second position corresponding to the second location on the skin of the subject; and
positioning and securing the sound sensor at a third position corresponding to the third location on the skin of the subject.
15 . The method according to claim 14 , further comprising:
capturing a second image of the subject with the multi-sensor device;
generating an alarm indicating a mismatch between the first position and the first location, a mismatch between the second position and the second location, or a mismatch between the third position and the third location; and
adjusting the first position, the second position, or the third position based on the alarm.
16 . The system according to claim 1 , wherein the elongated body is made of flexible silicone such that a length of the elongated body is extendable and retractable.
17 . The system according to claim 1 , wherein the first electrode and the second electrode are configured to measure thoracic impedance and electrocardiogram.
18 . The system according to claim 1 , further comprising a first pad is adapted to be disposed between the first electrode and the skin of the subject in a direction perpendicular to the horizontal direction and the vertical direction, and a second pad is adapted to be disposed between the second electrode and the skin of the subject in the direction perpendicular to the horizontal direction and the vertical direction.
19 . The system according to claim 1 , wherein the multi-sensor device includes a first wire extending horizontally along the elongated body to reach the electrical circuitry including the controller, and a second wire extending horizontally along the elongated body to reach the electrical circuitry including the controller.
20 . The system according to claim 1 , wherein the electrical circuitry including the controller covers opposite sides of the elongated body in the vertical direction and covers opposite sides of the extension in the horizontal direction in a plan view.