Thomas J Frank

US Patent:

8626266, Jan 7, 2014

Filed:

Dec 8, 2011

Appl. No.:

13/315234

Inventors:

Thomas H. Frank - Crofton MD, US
Otis R. Blaumanis - Sparks MD, US
Joseph A. La Rosa - Baltimore MD, US
Yvette M. Word - Pasadena MD, US

Assignee:

Perinatronics Medical Systems, Inc. - Crofton MA

International Classification:

A61B 5/055

US Classification:

600413, 600509

Abstract:

High resistance non-metallic ECG leads are used to capture biologically generated electrical signals, and include at least one magnetic resonance noise lead to capture a noise reference signal indicative of electromagnetic noise ambient to the leads generated by magnetic resonance imaging (MRI). The noise reference signal is canceled from the captured electrical signal using an adaptive canceling noise filter to obtain a processed electrical signal indicative of the biologically generated electrical signal that causes movement in a patient's moving body part, such as the heart. A characteristic of the processing electrical signal indicative of the biologically generated electrical signal that causes the movement is detected to obtain a trigger signal, which is then transmitted to cause the MRI system to capture at least one imagine including the moving body part.

US Patent:

20130221964, Aug 29, 2013

Filed:

Feb 27, 2012

Appl. No.:

13/406015

Inventors:

Shabnam SHAFIEE HAJI ABADI - North Bethesda MD, US
Thomas Herbert Frank - Crofton MD, US

Assignee:

Perinatronics Medical Systems, Inc. - Crofton MD

International Classification:

G01R 33/54
G01R 33/34

US Classification:

324314, 324322

Abstract:

A method of processing an electrical signal includes: capturing, via at least one main lead, an electrical signal; capturing, via at least one noise lead, a noise reference signal, wherein the at least one noise lead includes at least one conductive loop formed on a plane; receiving, by a processing device, the electrical signal and the noise reference signal; and processing, by the processing device, the electrical signal to cancel the noise reference signal from the electrical signal to obtain a processed electrical signal.

US Patent:

50424998, Aug 27, 1991

Filed:

Aug 2, 1990

Appl. No.:

7/561575

Inventors:

Thomas H. Frank - Crofton MD
Richard K. Gibbs - Laurel MD
Robert L. Wells - Odenton MD

International Classification:

A61B 50448

US Classification:

128698

Abstract:

A fetal heart rate monitor monitors weak fetal electrocardiogram signals in the presence of strong interfering material ECG complexes, general random background muscle noise, and 60 Hz power line noise. An electrocardiographic adaptive cancellation process to cancel the maternal ECG component from an abdominal ECG signal recorded from a pregnant subject's abdomen signal is processed using computer software. A set of easily movable maternal abdominal and thoracic ECG electrodes is used. An operator views the ECG data in an oscilloscope and optimally places the set of thoracic electrodes to adaptively cancel the maternal ECG signal from the signal separately derived from a movable abdominal electrocardiographic lead. The invention noninvasively obtains from the abdomen of a pregnant subject the fetal ECG signal, fetal heart rate, and accurate beat-to-beat fetal heart rate variability. Computer software provides cancellation of the maternal ECG component derived from a maternal abdominal ECG lead using a separate set of maternal thoracic ECG leads.