Adherent cardiac monitor with advanced sensing capabilities
First Claim
1. A system for monitoring a patient, the system comprising:
- a first adherent device adapted to be adhered to a skin of a patient, the first adherent device having a first support with a first adhesive configured to adhere the first support to the skin, the first adherent device including first electrodes supported with the first support to couple to the skin of the patient, the first adherent device adapted to measure physiological parameters of the patient with the first electrodes when coupled to the skin of the patient during a first monitoring period, the first electrodes defining a first electrode axis;
a second adherent device adapted to be adhered to the skin of the patient, the second adherent device having a second support with a second adhesive configured to adhere the second support to the skin, the second adherent device including second electrodes supported with the second support to couple to the skin of the patient, the second adherent device adapted to measure physiological parameters of the patient with the second electrodes when coupled to the skin of the patient during a second monitoring period subsequent the first monitoring period, the second electrodes define a second electrode axis;
at least one accelerometer couplable to at least one of the first adherent device or the second adherent device and having a measurement axis aligned with the respective electrode axis, wherein the at least one accelerometer is adapted to determine an orientation of the respective electrode axis of the first electrodes or the second electrodes relative a reference axis of the patient when coupled to the first or second adherent device during the respective monitoring periods; and
a processor system comprising a tangible medium configured to modify the measured physiological parameters based on the determined orientations of the first electrode axis or the second electrode axis such that errors in the physiological parameter measurements associated with changes in the orientation of the first and second adherent devices are reduced.
3 Assignments
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Accused Products
Abstract
An adherent device comprises an adhesive patch with at least two electrodes and an accelerometer. The accelerometer can be used to determine an orientation of the at least two measurement electrodes on a patient. By determining the orientation of the electrodes of the patch on the patient, physiologic measurements with the at least two electrodes can be adjusted and/or corrected in response to the orientation of the patch on the patient. The adherent patch and/or electrodes can be replaced with a second adherent patch and/or electrodes, and the orientation of the second adherent patch and/or electrodes can be determined with the accelerometer or a second accelerometer. The determined orientation of the second patch and/or electrodes on the patient can be used to correct measurements made with the second adherent patch and/or electrodes.
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Citations
25 Claims
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1. A system for monitoring a patient, the system comprising:
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a first adherent device adapted to be adhered to a skin of a patient, the first adherent device having a first support with a first adhesive configured to adhere the first support to the skin, the first adherent device including first electrodes supported with the first support to couple to the skin of the patient, the first adherent device adapted to measure physiological parameters of the patient with the first electrodes when coupled to the skin of the patient during a first monitoring period, the first electrodes defining a first electrode axis; a second adherent device adapted to be adhered to the skin of the patient, the second adherent device having a second support with a second adhesive configured to adhere the second support to the skin, the second adherent device including second electrodes supported with the second support to couple to the skin of the patient, the second adherent device adapted to measure physiological parameters of the patient with the second electrodes when coupled to the skin of the patient during a second monitoring period subsequent the first monitoring period, the second electrodes define a second electrode axis; at least one accelerometer couplable to at least one of the first adherent device or the second adherent device and having a measurement axis aligned with the respective electrode axis, wherein the at least one accelerometer is adapted to determine an orientation of the respective electrode axis of the first electrodes or the second electrodes relative a reference axis of the patient when coupled to the first or second adherent device during the respective monitoring periods; and a processor system comprising a tangible medium configured to modify the measured physiological parameters based on the determined orientations of the first electrode axis or the second electrode axis such that errors in the physiological parameter measurements associated with changes in the orientation of the first and second adherent devices are reduced. - View Dependent Claims (2, 3, 4, 5)
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6. A system for monitoring a patient, the system comprising:
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a first adherent measurement device adapted to be adhered to a skin of a patient, the first adherent measurement device comprising a first support with a first adhesive configured to adhere the first support to a skin of the patient, the first adherent measurement device comprising a first accelerometer and a first at least two measurement electrodes, the first adherent device comprising first measurement circuitry configured to measure a first accelerometer signal with the accelerometer and a first electrocardiogram signal with the first at least two measurement electrodes during a first monitoring period; a second adherent measurement device adapted to be adhered to the skin of the patient, the second adherent measurement device comprising a second support with a second adhesive configured to adhere the second support to the skin, the second adherent measurement device comprising a second accelerometer and a second at least two measurement electrodes, the second accelerometer comprising second circuitry configured to measure a second accelerometer signal with the second accelerometer and a second electrocardiogram signal with the second at least two measurement electrodes during a second monitoring period subsequent the first monitoring period; and a processor system comprising a tangible medium configured to combine the first electrocardiogram signal with the second electrocardiogram signal in response to the first accelerometer signal and the second accelerometer signal, wherein the processor system is configured to determine an orientation of the first electrode measurement axis relative a reference axis of the patient in response to the first accelerometer signal and determine an orientation of the second electrode measurement axis relative the reference axis of the patient in response to the to the accelerometer signal, wherein the reference axis corresponds to a vertical axis of the patient that extends vertically along the patient when the patient is standing or sitting. - View Dependent Claims (7, 8, 9)
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10. A method of monitoring a patient, the method comprising:
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adhering a first adherent device to a skin of the patient, the adherent device comprising a first accelerometer and at least two physiological measurement electrodes, the at least two physiological measurement electrodes separated by a distance to define an electrode measurement axis; a processor system receiving an accelerometer signal provided by the accelerometer of the first adherent device when the first adherent device is adhered to the patient; the processor system determining a reference axis of the patient corresponding to a vertical axis that extends vertically along the patient when the patient is standing and determining an orientation of the electrode measurement axis of the first adherent device relative the reference axis in response to the accelerometer signal of the first adherent device; the processor system receiving physiological parameters of the patient provided by with the at least two physiological measurement electrodes of the first adherent device when the first adherent device is coupled to the skin of the patient and the processor system modifying the physiological parameter measurements obtained from the first adherent device based on the determined orientation of the electrode measurement axis of the first adherent device; adhering a second adherent device to a skin of the patient, the adherent device comprising the first accelerometer or a second accelerometer and at least two physiological measurement electrodes, the at least two physiological measurement electrodes separated by a distance to define an electrode measurement axis; the processor system receiving an accelerometer signal provided by from the accelerometer of the second adherent device when the second adherent device is adhered to the patient; the processor system determining an orientation of the electrode measurement axis of the second adherent device relative the reference axis of the patient in response to the accelerometer signal of the second adherent device; removing the first adherent device from the patient; and the processor system receiving physiological parameters of the patient provided by the at least two physiological measurement electrodes of the second adherent device and the processor system modifying the physiological parameter measurements obtained from the second adherent device based on the determined orientation of the electrode measurement axis of the second adherent device relative the reference axis of the patient such that differences in the measured physiological parameters associated with changes in the orientation of the first and second adherent devices are reduced. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification