Patents by Inventor Virginia S. Lu

Virginia S. Lu 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: 20240148972
    Abstract: Disclosed herein are apparatuses and methods that account for meal announcements in closed loop insulin delivery systems. Rather than simply increasing an insulin delivery rate in response to the meal announcement, the closed loop algorithm can be modified to increase the insulin on board tolerance during eating periods. This approach utilizes the stability of the cascaded loop in the closed loop algorithm to prevent the oscillations in glucose levels that can occur by simply increasing the basal rate.
    Type: Application
    Filed: January 18, 2024
    Publication date: May 9, 2024
    Inventors: Thomas R. Ulrich, Virginia S. Lu
  • Patent number: 11951284
    Abstract: Apparatuses and methods for transitioning to sleep mode or otherwise modified glucose target range in automated insulin delivery systems. For example, sleep mode can include a lower glucose target and/or lower and narrower glucose target range because of fewer variables that affect glucose values during sleep such as eating and exercise. Due to increased stability provided by the sleep mode target range, it is desirable to transition to the sleep mode target range as quickly as possible, while ensuring the transition is done safely and does not risk low glucose or hypoglycemia by too quickly switching to the lower and narrower target range. Systems and methods disclosed herein therefore provide various approaches for safely and quickly transitioning to sleep mode or other modified target ranges in order to improve time in range by being more aggressive to get to the lower sleep mode or other target faster without risking hypoglycemia.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: April 9, 2024
    Assignee: Tandem Diabetes Care, Inc.
    Inventors: Alexandra Elena Constantin, Michael Michaud, Geoffrey A. Kruse, Thomas R. Ulrich, Paul Harris, Virginia S. Lu, Garrett Marin
  • Patent number: 11911595
    Abstract: Disclosed herein are apparatuses and methods that account for meal announcements in closed loop insulin delivery systems. Rather than simply increasing an insulin delivery rate in response to the meal announcement, the closed loop algorithm can be modified to increase the insulin on board tolerance during eating periods. This approach utilizes the stability of the cascaded loop in the closed loop algorithm to prevent the oscillations in glucose levels that can occur by simply increasing the basal rate.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: February 27, 2024
    Assignee: TANDEM DIABETES CARE, INC.
    Inventors: Thomas R. Ulrich, Virginia S. Lu
  • Publication number: 20240050650
    Abstract: Embodiments of the present disclosure relate to an infusion pump system including a holder or carrier for an ambulatory infusion pump that can be worn on or near the patient's body. Embodiments depicted and described herein provide a more versatile and secure way to hold and carry an ambulatory infusion pump.
    Type: Application
    Filed: August 11, 2023
    Publication date: February 15, 2024
    Inventors: Adam Evard, Jacob Pearlman, Virginia S. Lu, Neel Shah
  • Publication number: 20230338653
    Abstract: Disclosed herein are apparatuses and methods that can simplify delivery of meal boluses in diabetes therapy. Rather than requiring a user to enter a number of carbohydrates for a given meal, the system can automatically provide a predetermined amount of insulin when the user indicates that a meal is going to be consumed. Providing such predetermined, fixed meal boluses provides a lower cognitive burden alternative for the mealtime experience.
    Type: Application
    Filed: April 26, 2023
    Publication date: October 26, 2023
    Inventors: Richard Rueda, Nicholas Sherer, Katherine Vyvy Tran, Ryan Cardenas, Jack Corbett, Peter Zhao, Micah Stephens, Colin Van Meter, Thomas R. Ulrich, Virginia S. Lu
  • Publication number: 20230113545
    Abstract: Disclosed herein are systems and methods for optimizing alarms, alerts, reminders and other notifications in an ambulatory infusion pump system. In an infusion pump system that includes a smartphone or other remote control device that interfaces with the infusion pump, such notifications can be given on both the remote control device and the infusion pump. To provide increased convenience and discretion for the user, the user may be able to opt to receive some or all notifications initially at only a single device, such as the smartphone, with some notifications, for example, being escalated to also be given at the pump if not acknowledged on the smartphone.
    Type: Application
    Filed: October 6, 2022
    Publication date: April 13, 2023
    Inventor: Virginia S. Lu
  • Publication number: 20230113755
    Abstract: Disclosed herein are apparatuses and methods that can provide a delayed bolus calculator for use in closed loop diabetes therapy that can account for additional factors not taken into account in regular meal bolus calculations when a user wants to deliver a meal bolus a period of time after a meal was consumed. A delayed bolus calculator can enable the user to enter a period of time since the meal was consumed in addition to the number of carbohydrates consumed in a meal. This enables the system to account for the amount of increased insulin from the closed loop algorithm in response to the meal and/or the time since the meal to ensure that the risk of hypoglycemia is mitigated while still reducing hyperglycemia.
    Type: Application
    Filed: October 12, 2022
    Publication date: April 13, 2023
    Inventors: Virginia S. Lu, Nicholas Sherer, Thomas R, Ulrich, Katherine Vyvy Tran, Jose Ricardo Rueda, Pat Mulvihill, Peter Zhao, Micah Stephens, Ryan Cardenas, Paul Harris, Geoffrey A. Kruse, Michael Michaud, Marissa Igartua
  • Publication number: 20230040677
    Abstract: An alternate mode for addressing meals in closed loop insulin delivery systems is disclosed. An Eating Soon Mode may be a user-selectable feature that can be activated when a user anticipates eating a meal in the near future. Once activated, Eating Soon Mode preemptively modifies the closed loop algorithm in preparation for the expected rise in glucose levels from consumption of the meal. This can result in a greater amount of time in range for the user, a lower coefficient of variation of the user's glucose levels and/or a lower maximum BG level for the user. According to embodiments disclosed herein, activation of Eating Soon Mode modifies the algorithm to deliver a correction bolus to lower the user's glucose level and to provide a modified, lower target range at which to maintain the user's glucose levels in anticipation of the glucose rise that will result from the meal.
    Type: Application
    Filed: August 3, 2022
    Publication date: February 9, 2023
    Inventors: Katherine Vyvy Tran, Jose Ricardo Rueda, Nicholas Sherer, Thomas R. Ulrich, Pat Mulvihill, Peter Zhao, Micah Stephens, Ryan Cardenas, Paul Harris, Geoffrey A. Kruse, Michael Michaud, Vance Swanson, Virginia S. Lu
  • Publication number: 20230037465
    Abstract: Disclosed herein are systems and methods for automated insulin delivery that provide an Alternate Normal Activity Mode that has a lower and narrower target range than the standard range employed in Normal Mode. The Alternative Normal Mode can be a user-selectable feature that provides more aggressive glucose level control that is designed to decrease hyperglycemia without significantly increasing the risk of hypoglycemia. For example, Normal Mode may employ a standard glucose range between which the closed loop algorithm attempts to maintain the user's glucose levels such as 112.5 mg/dL to 160 mg/dL and Alternative Normal Mode may employ a lower and narrower range such as 90 mg/dL to 130 mg/dL. Alternative Normal Mode can also employ a lockout feature that is activated when glucose is high, but is falling rapidly.
    Type: Application
    Filed: April 28, 2022
    Publication date: February 9, 2023
    Inventors: Jose Ricardo Rueda, Nicholas Sherer, Thomas R. Ulrich, Katherine Vyvy Tran, Pat Mulvihill, Peter Zhao, Micah Stephens, Ryan Cardenas, Paul Harris, Geoffrey A. Kruse, Michael Michaud, Virginia S. Lu
  • Publication number: 20220265927
    Abstract: Disclosed herein are apparatuses and methods for transitioning from automated closed loop insulin delivery to open loop insulin therapy. When closed loop control is terminated, rather than immediately transitioning from the closed loop rate at termination to a preprogrammed open loop rate, the system can instead gradually transition over time to the preprogrammed open loop rate. This gradual transition provides a safer transition to open loop therapy that reduces the risk of hyperglycemia and hypoglycemia.
    Type: Application
    Filed: February 22, 2022
    Publication date: August 25, 2022
    Inventors: Paul Harris, Virginia S. Lu
  • Publication number: 20220062553
    Abstract: Apparatuses and methods for transitioning to sleep mode or otherwise modified glucose target range in automated insulin delivery systems. For example, sleep mode can include a lower glucose target and/or lower and narrower glucose target range because of fewer variables that affect glucose values during sleep such as eating and exercise. Due to increased stability provided by the sleep mode target range, it is desirable to transition to the sleep mode target range as quickly as possible, while ensuring the transition is done safely and does not risk low glucose or hypoglycemia by too quickly switching to the lower and narrower target range. Systems and methods disclosed herein therefore provide various approaches for safely and quickly transitioning to sleep mode or other modified target ranges in order to improve time in range by being more aggressive to get to the lower sleep mode or other target faster without risking hypoglycemia.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Alexandra Elena Constantin, Michael Michaud, Geoffrey A. Kruse, Thomas R. Ulrich, Paul Harris, Virginia S. Lu, Garrett Marin
  • Publication number: 20210353857
    Abstract: Disclosed herein are apparatuses and methods that account for meal announcements in closed loop insulin delivery systems. Rather than simply increasing an insulin delivery rate in response to the meal announcement, the closed loop algorithm can be modified to increase the insulin on board tolerance during eating periods. This approach utilizes the stability of the cascaded loop in the closed loop algorithm to prevent the oscillations in glucose levels that can occur by simply increasing the basal rate.
    Type: Application
    Filed: May 18, 2021
    Publication date: November 18, 2021
    Inventors: Thomas R. Ulrich, Virginia S. Lu