Patents by Inventor Brian J. Wenzel
Brian J. Wenzel 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: 20240077180Abstract: A work light including a body defining a first end, a second end opposite the first end, a length extending between the first end and the second end, and a pivot axis extending parallel to the length. The first end includes a power button. The work light further includes a light source head pivotally coupled to the body to pivot about the pivot axis and configured to be operated by the power button. The light source head includes a planar light panel having a plurality of light emitting diodes aligned in a direction parallel to the pivot axis. The work light further includes a battery receptacle disposed on the body and configured to receive at least a portion of a battery. The battery couples to the battery receptacle by sliding into the battery receptacle along the direction parallel to the pivot axis.Type: ApplicationFiled: November 8, 2023Publication date: March 7, 2024Inventors: Duane W. WENZEL, Brian CORNELL, Alan AMUNDSON, Jun MA, Jay J. ROSENBECKER, Jing SU, Jason ISAACS
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Patent number: 9743994Abstract: A method for determining the location of a medical device within a body is provided. The method includes transmitting from the medical device an acoustic signal; receiving with the medical device a reflected acoustic signal; advancing the medical device based on a first algorithm, the first algorithm including a first weighting factor and a first feature extracted from the reflected acoustic signal; determining a first location of the medical device based on the first algorithm; and moving the medical device to a second location based on a second algorithm, the second algorithm based on the determined first location and including at least one of a second weighting factor and a second feature extracted from the reflected acoustic signal. Also disclosed are systems and devices for performing the methods described herein.Type: GrantFiled: April 19, 2016Date of Patent: August 29, 2017Assignee: Vasonova, Inc.Inventors: Brian J. Wenzel, Kichang Lee, Stephen P. Hanlon, Miroslav Navratil, Jin Jiang
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Publication number: 20160256224Abstract: A method for determining the location of a medical device within a body is provided. The method includes transmitting from the medical device an acoustic signal; receiving with the medical device a reflected acoustic signal; advancing the medical device based on a first algorithm, the first algorithm including a first weighting factor and a first feature extracted from the reflected acoustic signal; determining a first location of the medical device based on the first algorithm; and moving the medical device to a second location based on a second algorithm, the second algorithm based on the determined first location and including at least one of a second weighting factor and a second feature extracted from the reflected acoustic signal. Also disclosed are systems and devices for performing the methods described herein.Type: ApplicationFiled: April 19, 2016Publication date: September 8, 2016Inventors: Brian J. Wenzel, Kichang Lee, Stephen P. Hanlon, Miroslav Navratil, Jin Jiang
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Patent number: 9345447Abstract: A method for determining the location of a medical device within a body is provided. The method includes transmitting from the medical device an acoustic signal; receiving with the medical device a reflected acoustic signal; advancing the medical device based on a first algorithm, the first algorithm including a first weighting factor and a first feature extracted from the reflected acoustic signal; determining a first location of the medical device based on the first algorithm; and moving the medical device to a second location based on a second algorithm, the second algorithm based on the determined first location and including at least one of a second weighting factor and a second feature extracted from the reflected acoustic signal. Also disclosed are systems and devices for performing the methods described herein.Type: GrantFiled: March 14, 2013Date of Patent: May 24, 2016Assignee: VasoNova, Inc.Inventors: Brian J. Wenzel, Kichang Lee, Stephen P. Hanlon, Miroslav Navratil, Jin Jiang
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Patent number: 9066662Abstract: Techniques are provided for estimating left atrial pressure (LAP) or other cardiac performance parameters based on measured conduction delays. In particular, LAP is estimated based interventricular conduction delays. Predetermined conversion factors stored within the device are used to convert the various the conduction delays into LAP values or other appropriate cardiac performance parameters. The conversion factors may be, for example, slope and baseline values derived during an initial calibration procedure performed by an external system, such as an external programmer. In some examples, the slope and baseline values may be periodically re-calibrated by the implantable device itself. Techniques are also described for adaptively adjusting pacing parameters based on estimated LAP or other cardiac performance parameters. Still further, techniques are described for estimating conduction delays based on impedance or admittance values and for tracking heart failure therefrom.Type: GrantFiled: July 16, 2013Date of Patent: June 30, 2015Assignee: Pacesetter, Inc.Inventors: Brian J. Wenzel, Dan E. Gutfinger, Mihir Naware, Xiaoyi Min, Jeffery Siou, Anders Bjorling, Dorin Panescu
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Patent number: 9014809Abstract: An exemplary embodiment includes acquiring an electroneurogram of the right carotid sinus nerve or the left carotid sinus nerve, analyzing the electroneurogram for at least one of chemosensory information and barosensory information and calling for one or more therapeutic actions based at least in part on the analyzing. Therapeutic actions may aim to treat conditions such as sleep apnea, an increase in metabolic demand, hypoglycemia, hypertension, renal failure, and congestive heart failure. Other exemplary methods, devices, systems, etc., are also disclosed.Type: GrantFiled: October 30, 2012Date of Patent: April 21, 2015Assignee: Pacesetter, Inc.Inventors: Brian J. Wenzel, Taraneh Ghaffari Farazi
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Patent number: 9002446Abstract: An exemplary embodiment includes acquiring an electroneurogram of the right carotid sinus nerve or the left carotid sinus nerve, analyzing the electroneurogram for at least one of chemosensory information and barosensory information and calling for one or more therapeutic actions based at least in part on the analyzing. Therapeutic actions may aim to treat conditions such as sleep apnea, an increase in metabolic demand, hypoglycemia, hypertension, renal failure, and congestive heart failure. Other exemplary methods, devices, systems, etc., are also disclosed.Type: GrantFiled: October 30, 2012Date of Patent: April 7, 2015Assignee: Pacesetter, Inc.Inventors: Brian J. Wenzel, Taraneh Ghaffari Farazi
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Patent number: 8965490Abstract: Described herein are systems, devices and methods to increase the accuracy of intravascular catheter placement, and to improve electrocardiogram (ECG), intravascular electrogram, and ultrasound Doppler signal processing to detect the Superior Vena Cava (SVC) area. Embodiments of the invention are intended to place an intravascular catheter within the lower ? of SVC to the junction of the SVC and the right atrium (RA)—called the cavoatrial junction (CAJ). In particular, the improved accuracy of CAJ location detection during an intravascular catheter placement can be provided by optimization of ECG parameters and ultrasound Doppler signal using Neuro-Fuzzy logic and/or other processing techniques.Type: GrantFiled: March 14, 2013Date of Patent: February 24, 2015Assignee: Vasonova, Inc.Inventors: Kichang Lee, Brian J. Wenzel, Jin Jiang, Stephen P. Hanlon
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Publication number: 20150025397Abstract: Techniques are provided for estimating left atrial pressure (LAP) or other cardiac performance parameters based on measured conduction delays. In particular, LAP is estimated based interventricular conduction delays. Predetermined conversion factors stored within the device are used to convert the various the conduction delays into LAP values or other appropriate cardiac performance parameters. The conversion factors may be, for example, slope and baseline values derived during an initial calibration procedure performed by an external system, such as an external programmer. In some examples, the slope and baseline values may be periodically re-calibrated by the implantable device itself. Techniques are also described for adaptively adjusting pacing parameters based on estimated LAP or other cardiac performance parameters. Still further, techniques are described for estimating conduction delays based on impedance or admittance values and for tracking heart failure therefrom.Type: ApplicationFiled: July 16, 2013Publication date: January 22, 2015Inventors: Brian J. Wenzel, Dan E. Gutfinger, Mihir Naware, Xiaoyi Min, Jeffery Siou, Anders Bjorling, Dorin Panescu
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Patent number: 8914108Abstract: Time delays between a feature of a signal indicative of electrical activity of a patient's heart and a feature of a plethysmograph signal indicative of changes in arterial blood volume are used to arrange the operation of an implantable device, such as a pacemaker. Shorter time delays between the feature of the signal indicative of electrical activity of a patient's heart and the feature of the plethysmograph signal indicative of changes in arterial blood volume are indicative of larger cardiac stroke volumes. The time delay can be used to select a pacing site or combination of pacing sites and/or to select a pacing interval set.Type: GrantFiled: January 6, 2014Date of Patent: December 16, 2014Assignee: Pacesetter, Inc.Inventors: Gene A. Bornzin, Wenbo Hou, Edward Karst, Brian J. Wenzel, Timothy A. Fayram
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Publication number: 20140336719Abstract: Time delays between a feature of a signal indicative of electrical activity of a patient's heart and a feature of a plethysmograph signal indicative of changes in arterial blood volume are used to arrange the operation of an implantable device, such as a pacemaker. Shorter time delays between the feature of the signal indicative of electrical activity of a patient's heart and the feature of the plethysmograph signal indicative of changes in arterial blood volume are indicative of larger cardiac stroke volumes. The time delay can be used to select a pacing site or combination of pacing sites and/or to select a pacing interval set.Type: ApplicationFiled: January 6, 2014Publication date: November 13, 2014Applicant: PACESETTER, INC.Inventors: Gene A. Bornzin, Wenbo Hou, Edward Karst, Brian J. Wenzel, Timothy A. Fayram
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Publication number: 20140135645Abstract: An exemplary includes acquiring an electroneurogram of the right carotid sinus nerve or the left carotid sinus nerve, analyzing the electroneurogram for at least one of chemosensory information and barosensory information and calling for one or more therapeutic actions based at least in part on the analyzing. Therapeutic actions may aim to treat conditions such as sleep apnea, an increase in metabolic demand, hypoglycemia, hypertension, renal failure, and congestive heart failure. Other exemplary methods, devices, systems, etc., are also disclosed.Type: ApplicationFiled: October 30, 2012Publication date: May 15, 2014Applicant: PACESETTER, INC.Inventors: Brian J. Wenzel, Taraneh Ghaffari Farazi
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Patent number: 8649865Abstract: Time delays between a feature of a signal indicative of electrical activity of a patient's heart and a feature of a plethysmograph signal indicative of changes in arterial blood volume are used to arrange the operation of an implantable device, such as a pacemaker. Shorter time delays between the feature of the signal indicative of electrical activity of a patient's heart and the feature of the plethysmograph signal indicative of changes in arterial blood volume are indicative of larger cardiac stroke volumes. The time delay can be used to select a pacing site or combination of pacing sites and/or to select a pacing interval set.Type: GrantFiled: December 9, 2010Date of Patent: February 11, 2014Assignee: Pacesetter, Inc.Inventors: Gene A. Bornzin, Wenbo Hou, Edward Karst, Brian J. Wenzel, Timothy A Fayram
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Publication number: 20130296693Abstract: A method for determining the location of a medical device within a body is provided. The method includes transmitting from the medical device an acoustic signal; receiving with the medical device a reflected acoustic signal; advancing the medical device based on a first algorithm, the first algorithm including a first weighting factor and a first feature extracted from the reflected acoustic signal; determining a first location of the medical device based on the first algorithm; and moving the medical device to a second location based on a second algorithm, the second algorithm based on the determined first location and including at least one of a second weighting factor and a second feature extracted from the reflected acoustic signal. Also disclosed are systems and devices for performing the methods described herein.Type: ApplicationFiled: March 14, 2013Publication date: November 7, 2013Inventors: Brian J. WENZEL, Kichang Lee, Stephen P. Hanlon, Miroslav Navratil, Jin Jiang
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Publication number: 20130296725Abstract: Described herein are systems, devices and methods to increase the accuracy of intravascular catheter placement, and to improve electrocardiogram (ECG), intravascular electrogram, and ultrasound Doppler signal processing to detect the Superior Vena Cava (SVC) area. Embodiments of the invention are intended to place an intravascular catheter within the lower ? of SVC to the junction of the SVC and the right atrium (RA)—called the cavoatrial junction (CAJ). In particular, the improved accuracy of CAJ location detection during an intravascular catheter placement can be provided by optimization of ECG parameters and ultrasound Doppler signal using Neuro-Fuzzy logic and/or other processing techniques.Type: ApplicationFiled: March 14, 2013Publication date: November 7, 2013Inventors: Kichang LEE, Brian J. Wenzel, Jin Jiang, Stephen P. Hanlon
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Patent number: 8396555Abstract: Apparatus to control physiological functions, including urinary track physiological functions are described. The apparatus includes an electrode(s) configured to be placed on or in a targeted component of a pudendal nerve and to stimulate the targeted pudendal nerve pudendal. The targeted component of the pudendal nerve includes a pudendal nerve urethral afferent, and afferent nerve fibers in the deep perineal nerve. The apparatus includes a controller coupled to the electrode to apply an electrical signal having an amplitude and a selected frequency chosen to stimulate the targeted component. The controller operates in a first mode to apply a first frequency without substantially changing the amplitude for achieving a first physiologic response and the controller operates in a second mode to apply a second frequency, different than the first frequency, for achieving a second physiologic response different than the first physiologic response.Type: GrantFiled: June 24, 2009Date of Patent: March 12, 2013Assignee: Case Western Reserve UniversityInventors: Joseph W. Boggs, II, Brian J. Wenzel, Kenneth J. Gustafson, Warren M. Grill
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Patent number: 8380303Abstract: Techniques are provided for use with implantable medical devices for addressing encapsulation effects, particularly in the detection of cardiac decompensation events such as heart failure (HF) or cardiogenic pulmonary edema (PE.) In one example, during an acute interval following device implant, cardiac decompensation is detected using heart rate variability (HRV), ventricular evoked response (ER) or various other non-impedance-based parameters that are insensitive to component encapsulation effects. During the subsequent chronic interval, decompensation is detected using intracardiac or transthoracic impedance signals. In another example, the degree of maturation of encapsulation of implanted components is assessed using impedance frequency-response measurements or based on the frequency bandwidth of heart sounds or other physiological signals.Type: GrantFiled: February 25, 2011Date of Patent: February 19, 2013Assignee: Pacesetter, Inc.Inventors: Stuart Rosenberg, Cecilia Q. Xi, Yelena Nabutovsky, Brian J. Wenzel, Jong Gill, William Hsu
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Patent number: 8295918Abstract: Techniques are provided for use with implantable medical devices for addressing encapsulation effects, particularly in the detection of cardiac decompensation events such as heart failure (HF) or cardiogenic pulmonary edema (PE.) In one example, during an acute interval following device implant, cardiac decompensation is detected using heart rate variability (HRV), ventricular evoked response (ER) or various other non-impedance-based parameters that are insensitive to component encapsulation effects. During the subsequent chronic interval, decompensation is detected using intracardiac or transthoracic impedance signals. In another example, the degree of maturation of encapsulation of implanted components is assessed using impedance frequency-response measurements or based on the frequency bandwidth of heart sounds or other physiological signals.Type: GrantFiled: February 25, 2011Date of Patent: October 23, 2012Assignee: Pacesetter, Inc.Inventors: Stuart Rosenberg, Cecilia Q. Xi, Yelena Nabutovsky, Brian J. Wenzel, Jong Gill, William Hsu
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Patent number: 8092386Abstract: In an implantable medical device for monitoring blood-glucose concentration in the blood, metabolic oxygen consumption is derived by measuring physiological metrics related to mixed venous oxygen concentration. Blood-glucose concentration is determined using correlations of blood-glucose concentration with measures of metabolic oxygen consumption including oxymetric, temperature, and electrocardiographic data. Additional physiological sensor measurements may be used to enhance the accuracy of the analysis of blood-glucose concentration. By using a combination of oxymetric and other physiological metrics, blood-glucose concentration can be reliably calculated over a wide range. The device compares the blood-glucose concentration with upper and lower acceptable bounds and generates appropriate warning signals if the concentration falls outside the bounds. The device may also control a therapeutic device to maintain blood-glucose concentration within an acceptable range.Type: GrantFiled: December 22, 2006Date of Patent: January 10, 2012Assignee: Pacesetter, Inc.Inventors: Brian J. Wenzel, Taraneh Ghaffari Farazi
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Publication number: 20110144711Abstract: Time delays between a feature of a signal indicative of electrical activity of a patient's heart and a feature of a plethysmograph signal indicative of changes in arterial blood volume are used to arrange the operation of an implantable device, such as a pacemaker. Shorter time delays between the feature of the signal indicative of electrical activity of a patient's heart and the feature of the plethysmograph signal indicative of changes in arterial blood volume are indicative of larger cardiac stroke volumes. The time delay can be used to select a pacing site or combination of pacing sites and/or to select a pacing interval set.Type: ApplicationFiled: December 9, 2010Publication date: June 16, 2011Applicant: PACESETTER, INC.Inventors: Gene A. Bornzin, Wenbo Hou, Edward Karst, Brian J. Wenzel, Timothy A. Fayram