Patents by Inventor Robert G. Walker

Robert G. Walker 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).

  • Publication number: 20260144703
    Abstract: Examples of the disclosure are directed to mechanical compression devices that can adjust a location of a compression position relative to a patient. One or more of the mechanical compression devices can adjust the compression position in an adjustment plane that is generally perpendicular to a patient. Some of the mechanical compression include support columns that have actuators that can be set asymmetrically to adjust the compression position and/or can be tilted relative to the backboard to adjust the compression position. Other examples includes mechanical compression devices that have multiple actuators that can be used to adjust the compression position as well as provide compressions.
    Type: Application
    Filed: January 20, 2026
    Publication date: May 28, 2026
    Applicant: PHYSIO-CONTROL, INC.
    Inventors: Marcus Ehrstedt, Thomas Falk, Anders Jeppsson, Jonas Lagerstrom, Tyson Taylor, Robert G. Walker, Lars Anders Jörgen Segerstein, Robert P. Marx, JR.
  • Publication number: 20260102068
    Abstract: An example method includes detecting a blood pressure waveform of a blood vessel of a subject receiving chest compressions; identifying an interpulse interval of the blood pressure waveform, s; and determining a diastolic pressure of the subject by determining a mean of the interpulse interval of the blood pressure waveform or a mean of a portion of the interpulse interval of the blood pressure waveform. The interpulse interval extends between pulse waves transmitted through the blood vessel and caused by the chest compressions.
    Type: Application
    Filed: October 14, 2025
    Publication date: April 16, 2026
    Applicant: Stryker Corporation
    Inventors: Tyson G. Taylor, Rose Tingwei Yin, Fred W. Chapman, Robert G. Walker
  • Publication number: 20260097219
    Abstract: An example method includes determining, by analyzing an electrocardiogram (ECG) of a subject, a time period between administration of a first electrical shock to the subject and a subsequent initiation of a shockable arrhythmia of the subject. The example method further includes predicting that a multi-shock therapy is indicated by analyzing the time period; and in response to predicting that the multi-shock therapy is indicated, causing administration of the multi-shock therapy to the subject, the multi-shock therapy including a second electrical shock and a third electrical shock.
    Type: Application
    Filed: October 7, 2025
    Publication date: April 9, 2026
    Applicant: Stryker Corporation
    Inventors: Robert G. Walker, Tyson G. Taylor, Rose Tingwei Yin, Fred W. Chapman
  • Publication number: 20260097213
    Abstract: An example method includes identifying feedback from electrical signals output along multiple vectors to multiple electrodes configured to be disposed on skin of a subject. The method further includes selecting, among the multiple vectors, an optimal vector by analyzing the feedback; and identifying, among the multiple electrodes, a first electrode and a second electrode associated with the optimal vector. In response to identifying the first electrode and the second electrode associated with the optimal vector, a recommendation to administer an electrical shock to the first electrode and the second electrode is output; or the electrical shock is output to the first electrode and the second electrode.
    Type: Application
    Filed: October 7, 2025
    Publication date: April 9, 2026
    Applicant: Stryker Corporation
    Inventors: David J. Linville, Tyson G. Taylor, Rose Tingwei Yin, Fred W. Chapman, Robert G. Walker, Ryan William Apperson, Rockland W. Nordess, Reza Sharif, Dennis Changmin Sohn, Michelle Bohner Robershotte, Trenton Roeber
  • Publication number: 20260097218
    Abstract: An example method includes receiving, by a defibrillator operating in a multi-shock mode, an input signal associated with a multi-shock therapy. The multi-shock therapy includes a first shock administered to a subject and a second shock administered to the subject. The first shock and the second shock are temporally overlapping. In response to expiration of a predetermined delay period after receiving the input signal, the defibrillator outputs the first shock to the subject.
    Type: Application
    Filed: October 7, 2025
    Publication date: April 9, 2026
    Applicant: Stryker Corporation
    Inventors: David J. Linville, Tyson G. Taylor, Rose Tingwei Yin, Fred W. Chapman, Robert G. Walker, Ryan William Apperson, Rockland W. Nordess, Reza Sharif
  • Publication number: 20260097220
    Abstract: An example method includes receiving, by a multi-shock accessory device, a multi-shock instruction from a defibrillator, the multi-shock instruction indicating a time interval between a primary electrical shock and a secondary electrical shock. In response to receiving the multi-shock instruction, the example method includes causing, by the multi-shock accessory device, a treatment circuit of the multi-shock accessory device to output a secondary electrical shock to electrodes disposed on skin of a subject; or causing, by the multi-shock accessory device, a capacitor of the multi-shock accessory device to discharge the secondary electrical shock to the electrodes.
    Type: Application
    Filed: October 7, 2025
    Publication date: April 9, 2026
    Applicant: Stryker Corporation
    Inventors: David J. Linville, Ryan William Apperson, Fred W. Chapman, Rockland W. Nordess, Reza Sharif, Tyson G. Taylor, Robert G. Walker, Rose Tingwei Yin
  • Publication number: 20260097221
    Abstract: An example method includes determining, before a subject has developed an arrhythmia or recurrence of the arrhythmia, that the subject is predicted to develop the arrhythmia. In response to determining that the subject is predicted to develop the arrhythmia, the example method further includes administering a sequence of external shocks to a heart of the subject, thereby preventing the subject from developing the arrhythmia or the recurrence of the arrhythmia.
    Type: Application
    Filed: October 7, 2025
    Publication date: April 9, 2026
    Applicant: Stryker Corporation
    Inventors: Tyson G. Taylor, Rose Tingwei Yin, Fred W. Chapman, Robert G. Walker, Daniel W. Piraino, David J. Linville, Ryan William Apperson
  • Publication number: 20260097222
    Abstract: An example method includes detecting, at a first set of electrodes disposed on a subject, a first interrogation signal having a first carrier frequency. The example method further includes detecting, in data representing the first interrogation signal, an artifact associated with a second interrogation signal having a second carrier frequency; removing, from the data representing first interrogation signal, the artifact; and determining, by analyzing the data representing the first interrogation signal, a transthoracic impedance of the subject.
    Type: Application
    Filed: October 7, 2025
    Publication date: April 9, 2026
    Applicant: Stryker Corporation
    Inventors: David J. Linville, Ryan William Apperson, Fred W. Chapman, Rockland W. Nordess, Reza Sharif, Tyson G. Taylor, Robert G. Walker, Rose Tingwei Yin, Robert P. Marx, Nattapon Chaimanonart
  • Patent number: 12551400
    Abstract: Examples of the disclosure are directed to mechanical compression devices that can adjust a location of a compression position relative to a patient. One or more of the mechanical compression devices can adjust the compression position in an adjustment plane that is generally perpendicular to a patient. Some of the mechanical compression include support columns that have actuators that can be set asymmetrically to adjust the compression position and/or can be tilted relative to the backboard to adjust the compression position. Other examples includes mechanical compression devices that have multiple actuators that can be used to adjust the compression position as well as provide compressions.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: February 17, 2026
    Assignee: PHYSIO-CONTROL, INC.
    Inventors: Marcus Ehrstedt, Thomas Falk, Anders Jeppsson, Jonas Lagerstrom, Tyson Taylor, Robert G. Walker, Lars Anders Jörgen Segerstein, Robert P. Marx, Jr.
  • Publication number: 20260041605
    Abstract: A backboard for a mechanical cardiopulmonary resuscitation (CPR) device having a first connector, a second connector, an elongated portion, and a position adjustment mechanism. The first connector is structured to couple to a first leg of the mechanical CPR device. The second connector structured to couple to a second leg of the mechanical CPR device. The elongated portion extends along an axis between the first connector and the second connector. The position adjustment mechanism is structured to adjust a patient position on the elongated portion in an adjustment direction that is perpendicular to the axis between the first connector and the second connector.
    Type: Application
    Filed: October 22, 2025
    Publication date: February 12, 2026
    Applicant: PHYSIO-CONTROL, INC.
    Inventors: Tyson Taylor, Sara Lindroth, Alexey Titov, Anders Nilsson, Fred W. Chapman, Steven Chester, Robert G. Walker, Steven B. Duke, Marcus Ehrstedt, Lars Anders Jörgen Segerstein, Wiktor Kocula, Anders Jeppsson, Tobias Svahn, Per Axelsson, Jonas Lagerstrom
  • Publication number: 20260021314
    Abstract: An example method includes generating, at a medical device, first data comprising (i) an identifier of a subject being monitored or treated by the medical device, (ii) data indicating a state of the medical device during a rescue event, (iii) data indicating a user of the medical device during the rescue event, and storing the first data in a memory associated with the medical device. The example method further includes generating second data by de-identifying the first data and transmitting the second data to an external device configured to receive the de-identified data from a fleet of medical devices and identify a trend associated with the de-identified data using a computing model(s).
    Type: Application
    Filed: July 21, 2025
    Publication date: January 22, 2026
    Applicant: Stryker Corporation
    Inventors: Tyson G. Taylor, Fred W. Chapman, Robert G. Walker, Robert P. Marx, Rose Tingwei Yin
  • Publication number: 20260020809
    Abstract: Various techniques related to post-treatment parameters of patients are described. An example method includes identifying a segment of an electrocardiogram (ECG) of an individual, wherein the segment is detected during a time interval that begins when an electrical shock is output to the individual's heart. The method further includes identifying a parameter of the electrical shock and generating a report including the segment of the ECG and indicating the parameter of the electrical shock. The report is output or transmitted to an external device.
    Type: Application
    Filed: September 24, 2025
    Publication date: January 22, 2026
    Applicant: Stryker Corporation
    Inventors: Fred W. Chapman, Robert G. Walker
  • Patent number: 12485065
    Abstract: An active backboard that can assist with adjusting a patient on the backboard to ensure that the backboard is correctly aligned for a compression mechanism of an upper portion of a mechanical cardiopulmonary resuscitation (CPR) device to perform compressions. The active backboard can also include multiple layers that can slide or move relative to each other to move the patient relative to the backboard. The active backboard can include roller bars, a wheel, and/or projections to assist with moving a patient relative to the backboard.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: December 2, 2025
    Assignee: PHYSIO-CONTROL, INC.
    Inventors: Tyson Taylor, Sara Lindroth, Alexey Titov, Anders Nilsson, Fred W. Chapman, Steven Chester, Robert G. Walker, Steven B. Duke, Marcus Ehrstedt, Lars Anders Jörgen Segerstein, Wiktor Kocula, Anders Jeppsson, Tobias Svahn, Per Axelsson, Jonas Lagerstrom
  • Publication number: 20250331721
    Abstract: An example method is performed by a computing device executing instructions stored in data storage, and includes receiving physiologic monitoring data from a plurality of sensors coupled to a patient, receiving information indicating a measurement of patient motion during the patient care event, determining whether the measurement of patient motion is above a threshold, based on determining whether the measurement of patient motion is above the threshold, generating, for the physiologic monitoring data, a respective quality indicator, analyzing, by the computing device, (i) a combination of the physiologic monitoring data from the plurality of sensors and (ii) the respective quality indicator for the physiologic monitoring data to generate a response dependent upon the combination of the physiologic monitoring data as weighted by the respective quality indicator, and based on analyzing, outputting caregiver feedback by the computing device according to the response.
    Type: Application
    Filed: July 2, 2025
    Publication date: October 30, 2025
    Inventors: Clinton T. Siedenburg, Tyson G. Taylor, Robert G. Walker, Fred W. Chapman
  • Patent number: 12446818
    Abstract: Various techniques related to post-treatment parameters of patients are described. An example method includes identifying a segment of an electrocardiogram (ECG) of an individual, wherein the segment is detected during a time interval that begins when an electrical shock is output to the individual's heart. The method further includes identifying a parameter of the electrical shock and generating a report including the segment of the ECG and indicating the parameter of the electrical shock. The report is output or transmitted to an external device.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: October 21, 2025
    Assignee: Stryker Corporation
    Inventors: Fred W. Chapman, Robert G. Walker
  • Patent number: 12419804
    Abstract: Systems, apparatuses, and methods directed to the collection and analysis of data related to a patient during an emergency advanced airway management process. The collected data may be obtained using various types of sensors, with the data collection process being managed or coordinated by a suitable system, such as a combination monitor-defibrillator. The monitor-defibrillator (alone or in combination with other system elements, such as a wired or wireless communications capability, a processor, data storage, etc.) may include a capability to process some or all of the acquired data, and in response indicate to a user when some of the collected data may be unreliable.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: September 23, 2025
    Assignee: Physio-Control, Inc.
    Inventor: Robert G. Walker
  • Patent number: 12414721
    Abstract: The system and method provide for electrocardiogram analysis and optimization of patient-customized cardiopulmonary resuscitation and therapy delivery. An external medical device includes a housing and a processor within the housing. The processor can be configured to receive an input signal for a patient receiving chest compressions and to select at least one filter mechanism and to apply the filter mechanism to the signal to at least substantially remove chest compression artifacts from the signal. A real time dynamic analysis of a cardiac rhythm is applied to adjust and integrate CPR prompting of a medical device. Real-time cardiac rhythm quality is facilitated using a rhythm assessment meter.
    Type: Grant
    Filed: April 25, 2024
    Date of Patent: September 16, 2025
    Assignee: Physio-Control, Inc.
    Inventors: Joseph L. Sullivan, Ronald Eugene Stickney, Robert G. Walker, Daniel W. Piraino, Isabelle Banville, Fred Chapman
  • Patent number: 12369796
    Abstract: An example method is performed by a computing device executing instructions stored in data storage, and includes receiving physiologic monitoring data from a plurality of sensors coupled to a patient, receiving information indicating a measurement of patient motion during the patient care event, determining whether the measurement of patient motion is above a threshold, based on determining whether the measurement of patient motion is above the threshold, generating, for the physiologic monitoring data, a respective quality indicator, analyzing, by the computing device, (i) a combination of the physiologic monitoring data from the plurality of sensors and (ii) the respective quality indicator for the physiologic monitoring data to generate a response dependent upon the combination of the physiologic monitoring data as weighted by the respective quality indicator, and based on analyzing, outputting caregiver feedback by the computing device according to the response.
    Type: Grant
    Filed: October 27, 2023
    Date of Patent: July 29, 2025
    Assignee: Physio-Control, Inc.
    Inventors: Clinton T. Siedenburg, Tyson G. Taylor, Robert G. Walker, Fred W. Chapman
  • Publication number: 20250152097
    Abstract: The disclosed physiological feedback systems and methods assist with assessing, monitoring and/or treating a patient experiencing a cardiac arrest event. The systems and methods receive multiple inputs and are continuous and/or iterative during a treatment session to provide physiological state trends of the patient. An index of the physiological state of the patient can be derived and confounders, and/or their effects, can be identified, and/or removed, from the index. Additionally, the systems and methods can assist with determining ischemic injury in a patient based on cerebral tissue oxygenation and/or other physiological data.
    Type: Application
    Filed: January 16, 2025
    Publication date: May 15, 2025
    Applicant: Physio-Control, Inc.
    Inventors: Robert G. Walker, Fred W. Chapman
  • Publication number: 20250152466
    Abstract: In embodiments, a CPR chest compression system includes a retention structure that can retain the patient's body, and a compression mechanism that can perform automatically CPR compressions and releases to the patient's chest. The compression mechanism can pause the performing of the CPR compressions for a short time, so that an attendant can check the patient. The CPR system also includes a user interface that can output a human-perceptible check patient prompt, to alert an attendant to check the patient during the pause. An advantage can be when the attendant checks in situations where the condition of the patient might have changed, and an adjustment is needed. Or in situations where the patient may have improved enough to where the compressions are no longer needed.
    Type: Application
    Filed: January 16, 2025
    Publication date: May 15, 2025
    Applicants: STRYKER CORPORATION, JOLIFE AB, PHYSIO-CONTROL, INC.
    Inventors: Erik von Schenck, Anders Nilsson, Sara Lindroth, Robert G. Walker, Fred W. Chapman, Krystyna Szul, Gregory T. Kavounas