Patents by Inventor Rik Vullings
Rik Vullings has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230233093Abstract: According to an aspect, there is provided a computer-implemented method for determining a heart rate of a subject, the method comprising: receiving data representing a signal generated by a pressure sensor configured to be placed on a suprasternal notch of a subject, the data representing a first component of the signal comprising respiratory information associated with the subject and/or a second component of the signal comprising cardiac information associated with the subject; determining, by applying a first algorithm to the data, a respiration parameter of the subject; applying at least one filter to the data to obtain first filtered data, the at least one filter comprising a first filter to attenuate the first component of the signal in the data based on the determined respiration parameter; and determining a heart rate of the subject by applying a second algorithm to the first filtered data.Type: ApplicationFiled: December 6, 2022Publication date: July 27, 2023Inventors: Luca Cerina, Pedro Miguel Ferreira dos Santos da Fonseca, Rik Vullings, Sebastiaan Overeem
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Publication number: 20200214618Abstract: Some embodiments are directed to a device for processing a fetal electrocardiogram (fECG). The processing may include obtaining a fetal vector cardiogram (VCG) from said multiple ECG signals, and providing the fetal vector cardiogram as an input to the machine learning classifier configured with trained parameters, and obtain a classification from the machine learning classifier.Type: ApplicationFiled: January 8, 2020Publication date: July 9, 2020Inventor: Rik VULLINGS
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Publication number: 20190192079Abstract: A system for motion artifact reduction in a photoplethysmogram, PPG, signal representing heart activity of a subject, comprises: a processing unit, said processing unit being configured to: receive a PPG signal carrying information of heart activity of the subject; receive a motion reference signal carrying information of a motion of the subject; form a PPG time-frequency representation, based on the PPG signal, and a motion reference time-frequency representation, based on the motion reference signal; and subtract a weighted representation of the motion reference time-frequency representation from the PPG time-frequency representation for reducing a motion artifact component in the PPG time-frequency representation and form a cleaned time-varying frequency spectrum of the PPG signal.Type: ApplicationFiled: December 22, 2018Publication date: June 27, 2019Inventors: Willemijn GROENENDAAL, Yifan ZHANG, Shuang SONG, Rik VULLINGS
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Publication number: 20190192018Abstract: A method for time domain signal reconstruction for representing heart activity of a subject from a photoplethysmogram (PPG) signal comprises: receiving a PPG signal carrying information of heart activity of the subject; decomposing frequency information of the PPG signal into a plurality of components, each component having a frequency spectrum and a weight; for each component of the plurality of components: comparing the frequency spectrum of the component to a spectrum mask based on an estimate of heart rate of the subject; and adjusting the weight of the component based on the comparing; and reconstructing a time domain signal based on recombination of the plurality of components with adjusted weights.Type: ApplicationFiled: October 29, 2018Publication date: June 27, 2019Inventors: Yifan Zhang, Willemijn Groenendaal, Shuang Song, Rik Vullings
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Patent number: 10064566Abstract: Systems and methods for electrocardiography monitoring use multiple capacitive sensors in order to determine reliable measurements of electrophysiological information of a patient. Relative coupling strength and/or reliability is used to select dynamically which sensors to use in order to determine, in particular, an electrocardiogram of the patient.Type: GrantFiled: November 24, 2014Date of Patent: September 4, 2018Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Louis Nicolas Atallah, Mohammed Meftah, Martijn Schellekens, Aline Anne Marie Serteyn, Rik Vullings, Jan Bergmans
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Patent number: 9999367Abstract: An improved fetal ST monitoring system and method is provided using an ECG monitoring system collecting a plurality of T/QRS segments of a fetus, and a data analysis computer system connected to the ECG monitoring system calculating from the plurality of T/QRS segments.Type: GrantFiled: November 16, 2016Date of Patent: June 19, 2018Assignee: Technische Universiteit EindhovenInventors: Rik Vullings, Swan Gie Oei
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Publication number: 20170055866Abstract: An improved fetal ST monitoring system and method is provided using an ECG monitoring system collecting a plurality of T/QRS segments of a fetus, and a data analysis computer system connected to the ECG monitoring system calculating from the plurality of T/QRS segments.Type: ApplicationFiled: November 16, 2016Publication date: March 2, 2017Inventors: Rik Vullings, Swan Gie Oei
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Publication number: 20160287129Abstract: Systems and methods for electrocardiography monitoring use multiple capacitive sensors in order to determine reliable measurements of electrophysiological information of a patient. Relative coupling strength and/or reliability is used to select dynamically which sensors to use in order to determine, in particular, an electrocardiogram of the patient.Type: ApplicationFiled: November 24, 2014Publication date: October 6, 2016Inventors: Louis Nicolas ATALLAH, Mohammed MEFTAH, Martijn SCHELLEKENS, Aline Anne Marie SERTEYN, Rik VULLINGS, Jan BERGMANS
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Patent number: 9307923Abstract: A signal processing arrangement 130, a monitoring system 100, a signal processing method, a monitoring method of monitoring uterine contractions of a pregnant woman, and a computer program product are provided. The signal processing arrangement 130 receives an electrophysiological signal 116 representing uterine muscle activity of a pregnant woman at an input 132. A filter 136 generates a filtered electrohysterogram signal from the electrophysiological signal 116. The filter 136 allows the passage of spectral components between 0 and 3 Hz. A window function applicator 138 applies a window function to the filtered electrohysterogram signal to obtain an output waveform 146. The window function defines that samples of a time interval preceding the application of the window function need to be used The output waveform 146 simulates output data of tocodynamometer or an intra-uterine pressure catheter. The output waveform 146 is provided at an output 144 of the signal processing arrangement.Type: GrantFiled: December 24, 2012Date of Patent: April 12, 2016Assignee: NEMO HEALTHCARE B.V.Inventors: Christiaan Hendrik Leonard Peters, Rik Vullings
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Publication number: 20140180169Abstract: A signal processing arrangement 130, a monitoring system 100, a signal processing method, a monitoring method of monitoring uterine contractions of a pregnant woman, and a computer program product are provided. The signal processing arrangement 130 receives an electrophysiological signal 116 representing uterine muscle activity of a pregnant woman at an input 132. A filter 136 generates a filtered electrohysterogram signal from the electrophysiological signal 116. The filter 136 allows the passage of spectral components between 0 and 3 Hz. A window function applicator 138 applies a window function to the filtered electrohysterogram signal to obtain an output waveform 146. The window function defines that samples of a time interval preceding the application of the window function need to be used The output waveform 146 simulates output data of tocodynamometer or an intra-uterine pressure catheter. The output waveform 146 is provided at an output 144 of the signal processing arrangement.Type: ApplicationFiled: December 24, 2012Publication date: June 26, 2014Applicant: NEMO HEALTHCARE B.V.Inventors: Christiaan Hendrik Leonard PETERS, Rik VULLINGS
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Patent number: 8332021Abstract: A system for monitoring a fetus during gestation comprises an input for receiving a plurality of electric signals measured on a surface of a maternal body; and a processor for providing a fetal electrocardiogram based on the received electric signals and based on an orientation of the fetus, wherein the fetal electrocardiogram represents a projection of a fetal cardiac potential vector according to a predetermined projection direction that is fixed with respect to the fetus. The fetal vector electrocardiogram is projected according to the projection direction. An at least partial representation of a fetal vector electrocardiogram is provided in dependence on the plurality of electric signals and indicative of a time path of an electrical field vector generated by a fetal heart of the fetus.Type: GrantFiled: January 20, 2010Date of Patent: December 11, 2012Assignees: Stichting Voor de Technische Wetenschappen, Technische Universiteit EindhovenInventors: Rik Vullings, Christiaan Peters, Swan Gie Oei, Petrus Wijn
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Publication number: 20100185108Abstract: A system for monitoring a fetus during gestation comprises an input for receiving a plurality of electric signals measured on a surface of a maternal body; and means for providing a fetal electrocardiogram based on the received electric signals and based on an orientation of the fetus, wherein the fetal electrocardiogram represents a projection of a fetal cardiac potential vector according to a predetermined projection direction that is fixed with respect to the fetus. The fetal vector electrocardiogram is projected according to the projection direction. An at least partial representation of a fetal vector electrocardiogram is provided in dependence on the plurality of electric signals and indicative of a time path of an electrical field vector generated by a fetal heart of the fetus.Type: ApplicationFiled: January 20, 2010Publication date: July 22, 2010Inventors: Rik VULLINGS, Christiaan PETERS, Swan Gie OEI, Peter WIJN