Determining Disease State Using An Induced Load
First Claim
1. A method for communicating a disease state of a patient, the method comprising:
- obtaining a signal from a patient sensor, wherein the signal changes in response to inducing a load on a vascular system of the patient;
analyzing the signal at a first point to obtain a first vascular system characteristic, wherein the first point occurs after the load is induced on the vascular system and wherein the signal is analyzed by a processor coupled to the patient sensor;
determining the disease state based at least in part on the first vascular system characteristic; and
communicating the disease state to an output device.
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Accused Products
Abstract
The present disclosure relates to determining a patient'"'"'s disease state based at least in pail on obtaining or determining certain underlying characteristics, such as vasotone, venous compliance, or ability of the vascular system to drain venous blood, of the patient'"'"'s vascular system. The characteristics may be obtained by analyzing changes to a patient signal, such as the overall signal change, the rate of change, the shape of the change, changes in signal energy, or changes in the baseline and/or the amplitude of the signal, and/or the time period(s) over which the signal changes, that are caused by inducing a load on the vascular system. In some embodiments, the signal changes may be analyzed by transforming the signal using, for example, a continuous wavelet transform. The patient'"'"'s health status or disease state may be determined using the one or more vascular system characteristics that influenced the signal change.
109 Citations
20 Claims
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1. A method for communicating a disease state of a patient, the method comprising:
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obtaining a signal from a patient sensor, wherein the signal changes in response to inducing a load on a vascular system of the patient; analyzing the signal at a first point to obtain a first vascular system characteristic, wherein the first point occurs after the load is induced on the vascular system and wherein the signal is analyzed by a processor coupled to the patient sensor; determining the disease state based at least in part on the first vascular system characteristic; and communicating the disease state to an output device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for communicating a disease state of a patient, the system comprising:
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an input signal generator for generating a signal, wherein the signal changes based at least in part upon inducing a load on a vascular system of the patient; a processor coupled to the input signal generator, wherein the processor is capable of; analyzing the signal at a first point to obtain a first vascular system characteristic, wherein the first point occurs after the load is induced on the vascular system; determining the disease state based at least in part on the first vascular system characteristic; and an output device coupled to the processor, wherein the output device is capable of communicating the disease state. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A computer-readable medium capable of communicating a disease state of a patient, the computer-readable medium having computer program instructions recorded thereon, which if activates would cause a processor to:
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obtain a signal from a patient sensor, wherein the signal changes in response to inducing a load on a vascular system of the patient; analyze the signal at a first point to obtain a first vascular system characteristic, wherein the at least a first point occurs after the load is induced on the vascular system; determine the disease state based at least in part on the first vascular system characteristic; and communicating the disease state to an output device.
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Specification