Method and apparatus for the measurement of autonomic function for the diagnosis and validation of patient treatments and outcomes

Patent No. US10376203 (titled "Method and apparatus for the measurement of autonomic function for the diagnosis and validation of patient treatments and outcomes") on Jan 10, 2016. The application was issued on Aug 13, 2019.

What is this patent about?

’203 is related to the field of bioanalytical analysis and medical diagnostics, specifically focusing on the objective quantification of pain. Traditionally, pain assessment has relied on subjective self-reporting, such as the Visual Analog Scale, which is prone to inconsistency and communication barriers. This invention provides a technical framework for measuring physiological responses within the autonomic nervous system to validate health status and treatment efficacy.

The underlying idea behind ’203 is that pain is not merely a subjective feeling but a measurable neurological event reflected in the pain matrix of the brain. By capturing electrical biosignals across the body’s midline, the system identifies asymmetries in electrodermal activity that correlate with central nervous system distress. The core engineering insight involves using these physiological deflections to bypass verbal reporting, providing a data-driven baseline for clinical decision-making.

The claims of ’203 focus on a specialized sensor configuration and a multi-factor data processing architecture. The system utilizes a contralateral sensor set to detect voltage or current differentials across the body, supplemented by at least one ipsilateral sensor used specifically for calibration and normalization of the primary biosignal. This hardware arrangement is integrated with a networked processor that correlates these real-time signals with a library of biopsychosocial variables known as BioTrace Factors.

In practice, the system functions by establishing a baseline through standardized noxious stimuli and then monitoring for signal deflections that indicate changes in pain intensity. The controller processes the raw electrical data by comparing the individual’s profile against a similarly situated population to account for demographic and environmental variables. This allows the system to differentiate between actual physiological pain and other autonomic responses like stress or anxiety, which might otherwise skew the data.

This approach differs from prior art by moving beyond simple galvanic skin response or heart rate monitoring to a holistic bioanalytical analysis that integrates clinical outcomes with longitudinal data. By combining objective biosignal measurements with historical treatment efficacy and demographic modeling, the invention provides a closed-loop system for adjusting medication dosages and validating recovery. This integration helps prevent opioid mismanagement and provides a verifiable metric for patient compliance and treatment success.

How does this patent fit in bigger picture?

Technical Landscape

In the mid-2010s when ’203 was filed, the objective quantification of physiological pain remained a significant challenge in clinical environments, at a time when patient assessment was typically implemented using subjective, uni-dimensional numerical rating scales. While wearable sensor technology and low-energy wireless communication were becoming more prevalent for general fitness tracking, medical systems commonly relied on intermittent, manual self-reporting rather than continuous, automated monitoring of the autonomic nervous system. Furthermore, hardware and software constraints made the real-time integration of disparate biopsychosocial data points with high-sensitivity electrodermal measurements non-trivial, often resulting in isolated data silos that lacked the diagnostic context necessary for complex chronic disease management.

Prosecution Position

The disclosed invention represents a meaningful technical advancement through the architectural integration of a pain matrix activity measurement device with a multi-tiered bioanalytical analysis platform. By utilizing contralateral and ipsilateral sensor placements to detect voltage or current differentials associated with the central nervous system's pain processing regions, the system enables a quantitative, objective measurement of pain that overcomes the inherent reliability issues of subjective reporting. This structural approach achieves a novel technical effect by correlating physiological biosignals—such as heart rate variability and electrodermal activity—with demographic and behavioral factors to generate dynamic diagnostic indicators. The integration of these objective metrics into a closed-loop system for automated medication dispensing and remote patient engagement represents a significant shift from reactive treatment to data-driven, proactive clinical management.

Claims

The patent contains a total of 36 claims, with claim 1 being the sole independent claim. This independent claim focuses on a bioanalytical analysis system that utilizes a specific sensor configuration—employing both contralateral and ipsilateral placements—to measure pain matrix activity and correlate these biosignals with demographic and biophysical factors to determine treatment effectiveness. The dependent claims serve to further define the system by specifying various physiological monitoring components like heart rate and blood pressure monitors, detailing electrical measurement parameters such as impedance and conductance, describing the use of noxious stimulus calipers for calibration, and outlining the physical integration of sensors into wearable tracks or clothing.

Key Claim Terms New

Definitions of key terms used in the patent claims.

Term (Source)Support for SpecificationInterpretation
BioTrace Factors
(Claim 1)
The PMD will acquire and store pain measurements, physiological measurement, and relevant data, correlating with surveys and the current “gold standard”, Visual Analog Scale (VAS) and similar scales for the self-report of pain to translate collected data to establish a more accurate and reliable scale of pain measurement based on physiological measurements and the biopsychosocial factors related to the experience of pain. Through the gathering of data points that comprise biological, psychological, social measures, and other relevant data fields combined with the disease state diagnostic data points, the PMD will store, data mine, integrate, and transform the gathered data. The BioTrace Factor data may further be analyzed for subsequent software updates to PMD for improved objective measurements and factor impact algorithms.A set of multidimensional data points encompassing biophysical, biological, psychological, social, environmental, and demographic information used to contextualize objective pain measurements.
Contralaterally
(Claim 1)
By measuring EDA using the contralateral placement of sensors, or electrodes, direct measurements of brain pain processing from the “pain matrix” demonstrate the “collection of brain regions that are involved in neurological functions, including cognition, emotion, motivation, and sensation as well as pain”. Studies have evidenced that only the right central nucleus of the amygdala (CeA) has been related to both acute and chronic pain. The PMD utilizes a computer processing system to process the electrical activity of a pain matrix by measuring the differential of voltage or current between at least two matching electrodes contralaterally placed.The placement of sensors on opposite sides of the body (left and right) to detect asymmetric biosignals related to brain-based pain processing.
Deflections
(Claim 1)
The device configured to measure differences in either voltage or current from measurements taken from the contralateral sensors to detect pain matrix response as deflections of the related biosignal indicating an increase or decrease of an individual's experience of pain. A migraine patient may receive a series of questions as designated time points related to pain inflections that represent a change in pain state. The method includes monitoring pain matrix activity and deflections from the established baseline.Changes or fluctuations in the measured electrical biosignal (voltage or current) that indicate a shift in the intensity or state of the individual's pain.
Ipsilaterally
(Claim 1)
The PMD utilizes a computer processing system to process the electrical activity of a pain matrix by measuring the differential of voltage or current between at least two matching electrodes contralaterally placed with the voltage or current differential between at least two matching electrodes ipsilaterally placed to calibrate measurements of the pain matrix and central nervous system activity. The PMD utilizes a computer processing system to process the electrical activity of a pain matrix and central nervous system measurement device by measuring the differential of voltage or current between at least two matching electrodes ipsilaterally placed. The pathway termed “EDA1” arises from the limbic region which includes the amygdala as a brain region that elicits ipsilateral EDA.The placement of sensors on the same side of the body, used here to provide a reference signal for calibrating and normalizing the contralateral pain measurements.
Pain matrix activity
(Claim 1)
By tracking and evaluating biophysical measurements, “pain matrix” activity in the form of a pain modulatory circuit with inputs that arise in multiple areas including cortical sites, the rostral anterior cingulate cortex (rACC), pregenual cingulate cortex, (pCC), somatosensory cortex 1 and 2, the thalamus and hypothalamus, insula, the amygdala, periaqueductal gray region (PAG), and additional descending pathway structures, and vagal tone may be correlated to determine pain state. The central nucleus of the amygdala (CeA) is central to this pain matrix with neurological connections linked to the periaqueductal gray region (PAG), responsible for descending pain pathways from the brain, and cortical sites that together with the amygdala provide emotional-affective modulation of cognitive functions in pain. Large asymmetric differences in EDA between the left and right side have been demonstrated upon direct stimulation of particular brain regions, some of which form the aforementioned “pain matrix.”The objective physiological response of the brain's pain processing and modulation circuits (including the amygdala and cortical sites) as manifested through electrical biosignals measured on the body.

Litigation Cases New

US Latest litigation cases involving this patent.

Case NumberFiling DateTitle
2:25-cv-04444Aug 1, 2025BIOTRACEIT CORPORATION v. DULLEN et al

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US10376203

Application Number
US14992016A
Filing Date
Jan 10, 2016
Publication Date
Aug 13, 2019
External Links
Slate, USPTO , Google Patents