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Ezra Dreisbach Phones & Addresses

  • 12061 208Th St, Vashon, WA 98070
  • Redmond, WA
  • Seattle, WA
  • Kiona, WA

Education

Degree: Associate degree or higher

Emails

Publications

Us Patents

System And Method For Atrial Fibrillation Detection In Non-Noise Ecg Data With The Aid Of A Digital Computer

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US Patent:
20230016393, Jan 19, 2023
Filed:
Sep 16, 2022
Appl. No.:
17/946583
Inventors:
- Bellevue WA, US
Ezra M. Dreisbach - Vashon WA, US
Chuck Dulken - Sammamish WA, US
Gust H. Bardy - Carnation WA, US
International Classification:
A61B 5/361
A61B 5/00
G06N 20/00
G06N 3/04
G06N 3/08
A61B 5/25
A61B 5/259
A61B 5/282
A61B 5/316
A61B 5/318
A61B 5/332
A61B 5/333
A61B 5/339
A61B 5/349
Abstract:
A system and method for atrial fibrillation detection in non-noise ECG data with the aid of a digital computer are provided. Electrocardiography (ECG) features and annotated patterns of the features are maintained in a database, at least some of the patterns associated with atrial fibrillation. A classifier is trained based on the annotated patterns, the classifier implemented by a convolutional neural network. A representation of an ECG signal recorded by one or more ambulatory monitors is received. Noise is detected in the representations and ECG features in the representation falling within each of the non-noise temporal windows are detected. The trained classifier is used to identify patterns of the ECG features. A value indicative of whether portions of the representation are associated the patient experiencing atrial fibrillation is calculated. That one or more of the portions are associated with the patient experiencing atrial fibrillation is determined.

Subcutaneous Electrocardiography Monitor Configured For Test-Based Data Compression

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US Patent:
20230019441, Jan 19, 2023
Filed:
Sep 14, 2022
Appl. No.:
17/944702
Inventors:
- Bellevue WA, US
Jason Felix - Vashon WA, US
Ezra M. Dreisbach - Vashon WA, US
International Classification:
A61B 5/00
A61B 5/35
A61B 5/259
A61B 5/316
A61B 5/333
A61B 5/339
A61B 5/349
A61B 5/332
Abstract:
A subcutaneous and cutaneous electrocardiography monitor configured for self-optimizing ECG data compression is provided. The monitors include a housing, an electrocardiographic front end circuit, a memory, and a micro-controller configured to: obtain a series of electrode voltage values based on the sensed electrocardiographic signals; use a plurality of selection schemes to choose one or more of a plurality of compression algorithms associated with each of the selection scheme for testing; test the selected compression algorithms including applying the compression algorithms chosen using each of the selection schemes to a segment of the electrode voltage series; analyze results of the testing; select one or more compression algorithms chosen using one of the selection schemes for compressing at least a portion of the electrode voltage series based on the analysis; obtain a compression of at least the portion of the electrode voltage series; and store the compression within the memory.

System And Method For Display Of Subcutaneous Cardiac Monitoring Data

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US Patent:
20230000421, Jan 5, 2023
Filed:
Sep 14, 2022
Appl. No.:
17/944899
Inventors:
- Bellevue WA, US
Ezra M. Dreisbach - Vashon WA, US
International Classification:
A61B 5/352
A61B 5/00
A61B 5/287
A61B 5/259
A61B 5/024
A61B 5/333
A61B 5/339
A61B 5/282
A61B 5/0245
A61B 5/35
A61B 5/0205
A61B 5/363
A61B 5/316
A61B 5/341
A61B 5/364
A61B 5/361
Abstract:
A system and method for display of subcutaneous cardiac monitoring data are provided. Cutaneous action potentials of a patient and other sensed data associated with the patient are recorded as electrocardiogram (EGC) data over a set time period using a subcutaneous insertable cardiac monitor. A set of R-wave peaks is identified within the ECG data and an R-R interval plot is constructed. A difference between recording times of successive pairs of the R-wave peaks in the set is determined. A heart rate associated with each difference is also determined. The pairs of the R-wave peaks and associated heart rate are plotted as the R-R interval plot. A diagnosis of cardiac disorder is facilitated based on patterns of the plotted pairs of the R-wave peaks, the associated heart rates in the R-R interval plot, and background data based on the other sensed data.

Ambulatory Electrocardiography Monitor

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US Patent:
20210275079, Sep 9, 2021
Filed:
May 24, 2021
Appl. No.:
17/328696
Inventors:
- Seattle WA, US
Ezra M. Dreisbach - Vashon WA, US
Jon Mikalson Bishay - Lexington KY, US
Corey Bailey Williamson - Bellingham WA, US
Gust H. Bardy - Carnation WA, US
International Classification:
A61B 5/318
G06F 21/60
A61B 5/00
G06F 21/62
G16H 40/63
A61B 90/90
A61B 90/96
A61B 5/259
A61B 5/282
A61B 5/316
A61B 5/333
A61B 5/339
A61B 5/349
A61B 5/361
A61B 5/363
A61B 5/366
Abstract:
An ambulatory electrocardiography monitor is provided. The monitor includes a housing adapted to couple to a monitoring patch that includes electrocardiographic electrodes; and electronic circuitry provided within the housing. The electronic circuitry includes an electrocardiographic front end circuit; the microcontroller configured to: execute a power up sequence upon the housing coupling to the patch; after the execution of the power-up sequence, retrieve from the monitoring patch an identifier associated with the patch and a password for accessing results of a physiological monitoring conducted using the patch; read samples of the electrocardiographic signals, buffer the samples of the electrocardiographic signals, compress the buffered samples of the electrocardiographic signals, buffer the compressed samples of the electrocardiographic signals, and write-the buffered samples into a memory in association with the password and the identifier; and the memory electrically interfaced with the microcontroller.

System And Method For Physiological Data Classification For Use In Facilitating Diagnosis

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US Patent:
20210076965, Mar 18, 2021
Filed:
Nov 30, 2020
Appl. No.:
17/107797
Inventors:
- Seattle WA, US
Ezra M. Dreisbach - Vashon WA, US
International Classification:
A61B 5/0456
A61B 5/044
A61B 5/0432
A61B 5/04
A61B 5/00
A61B 5/0408
A61B 5/0452
A61B 5/046
A61B 5/0464
A61B 5/0245
A61B 5/024
A61B 5/0205
Abstract:
A system and method for physiological data classification for use in facilitating diagnosis is provided. A physiological monitor includes a feedback button and physiological data obtained via the physiological monitor is stored in a database. The physiological data is divided into segments and one or more data segments are classified as noise. A determination is made that at least one of the data segments classified as noise includes a marker indicating a press of the feedback button on the physiological monitor. A set of the physiological data including and surrounding the physiological data occurring during the press of the feedback button is identified within the data segment classified as noise. The identified set of physiological data is provided with the data segments classified as valid for analysis.

Subcutaneous Electrocardiography Monitor Configured For Self-Optimizing Ecg Data Compression

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US Patent:
20210045635, Feb 18, 2021
Filed:
Oct 30, 2020
Appl. No.:
17/086137
Inventors:
- Seattle WA, US
Jason Felix - Vashon WA, US
Ezra M. Dreisbach - Vashon WA, US
International Classification:
A61B 5/00
A61B 5/044
A61B 5/0408
A61B 5/0432
A61B 5/04
A61B 5/0452
Abstract:
A subcutaneous electrocardiography monitor configured for self-optimizing ECG data compression is provided. ECG waveform characteristics are rarely identical in patients with cardiac disease making this innovation crucial for the long-term data storage and analysis of complex cardiac rhythm disorders. The monitor includes a memory and a micro-controller operable to execute under a micro-programmable control and configured to: obtain a series of electrode voltage values; select one or more of a plurality of compression algorithms for compressing the electrode voltage series; apply one or more of the selected compression algorithms to the electrode voltage series; evaluate a degree of compression of the electrode voltage series achieved using the application of the selected algorithms; apply one or more of the compression algorithms to the compressed electrode voltage series upon the degree of compression not meeting a predefined threshold; and store the compressed electrode voltage series within the memory.

System And Method For Neural-Netwok-Based Atrial Fibrillation Detection With The Aid Of A Digital Computer

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US Patent:
20210038102, Feb 11, 2021
Filed:
Oct 26, 2020
Appl. No.:
17/080769
Inventors:
- Seattle WA, US
Ezra M. Dreisbach - Vashon WA, US
Chuck Dulken - Sammamish WA, US
Gust H. Bardy - Carnation WA, US
International Classification:
A61B 5/046
A61B 5/00
A61B 5/0404
A61B 5/0408
G06N 20/00
A61B 5/04
A61B 5/0452
A61B 5/044
A61B 5/0432
A61B 5/0402
G06N 3/04
G06N 3/08
Abstract:
A system and method for neural-network-based atrial fibrillation detection with the aid of a digital computer are provided. Electrocardiography (ECG) features and annotated patterns of the features are maintained in a database, at least some of the patterns associated with atrial fibrillation. A classifier is trained based on the annotated patterns, the classifier implemented by a convolutional neural network. A representation of an ECG signal recorded by one or more ambulatory monitors is received. ECG features in the representation falling within each of the temporal windows are detected. The trained classifier is used to identify patterns of the ECG features. At least one matrix with weights for the patterns are generated. A value indicative of whether portions of the representation are associated the patient experiencing atrial fibrillation is calculated. That one or more of the portions are associated with the patient experiencing atrial fibrillation is determined.

System And Method For Event-Centered Display Of Subcutaneous Cardiac Monitoring Data

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US Patent:
20210038105, Feb 11, 2021
Filed:
Oct 26, 2020
Appl. No.:
17/080757
Inventors:
- Seattle WA, US
Ezra M. Dreisbach - Vashon WA, US
International Classification:
A61B 5/0456
A61B 5/044
A61B 5/0432
A61B 5/00
A61B 5/0408
A61B 5/0452
A61B 5/0245
A61B 5/024
A61B 5/042
Abstract:
A system and method for facilitating a cardiac rhythm disorder diagnosis based on subcutaneous cardiac monitoring data with the aid of a digital computer are provided. Cutaneous action potentials of a patient are recorded as electrocardiogram (EGC) data over a set time period using a subcutaneous insertable cardiac monitor. A set of R-wave peaks is identified within the ECG data and an R-R interval plot is constructed. A difference between recording times of successive pairs of the R-wave peaks in the set is determined. A heart rate associated with each difference is also determined. The pairs of the R-wave peaks and associated heart rate are plotted as the R-R interval plot. A diagnosis of cardiac disorder is facilitated based on patterns of the plotted pairs of the R-wave peaks and the associated heart rates in the R-R interval plot.
Ezra M Dreisbach from Vashon, WA, age ~53 Get Report