Patents by Inventor Douglas Edward Ivers

Douglas Edward Ivers 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: 20250018170
    Abstract: A drive unit system for operating a cardiac assist device is disclosed. The drive unit system may include an R-wave detection module that makes a speculative detection of an R-wave associated with a received electrocardiogram (ECG) signal of a patient's heart and a conservative detection of the R-wave. The drive unit system includes a drive unit that may be coupled to the cardiac assist device and may operate the cardiac assist device based on the speculative detection and the conservative detection.
    Type: Application
    Filed: July 14, 2023
    Publication date: January 16, 2025
    Inventors: Douglas Edward Ivers, Guruprasad Anapathur Giridharan
  • Patent number: 12178586
    Abstract: The present disclosure is directed towards systems and methods built for predictively timing the inflation and/or deflation of an intra-aortic balloon pump. A controller operates in three states: (1) initialization state, (2) learning state, and (3) peak detection state. The controller decomposes a patient's electrocardiogram signal to a power signal. It then learns characteristics of the patient's electrocardiogram signal during the learning state and computes adaptive threshold parameter values. During the peak detection state, the controller applies the learnt threshold parameter values on a current electrocardiogram signal to identify occurrence and timings of R peaks in the electrocardiogram signal. The R-to-R peak timings are then used to trigger inflation of an intra-aortic balloon pump.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: December 31, 2024
    Assignees: NuPulseCV, Inc., North Carolina State University
    Inventors: Robert M. Smith, Nagarjuna Reddy Chinta, Ryan Daniel McCormick, Douglas Edward Ivers, Cranos M. Williams, Divyakumar Mahiman Badheka, Hubert Troy Nagle, Jr., Sai Bhargav Dasari, Shamim Samadi
  • Publication number: 20240382739
    Abstract: A system for limiting inflation of an expandable member (e.g., a balloon) in an intravascular circulatory support system of a patient may comprise a drive unit and an air mover limiter. The drive unit may include an air mover and a motor. The air mover may have a first end and a second end. The first end may be fixed and have a pneumatic output in fluid connection with the expandable member. The second end may be movable and pneumatically closed. The air mover limiter may be configured to restrict displacement of the second end to under-inflate the expandable member based on the blood pressure of the patient. Displacement of the second end moves a volume of air into or out of the expandable member. The volume of air corresponds to the air mover limiter configuration.
    Type: Application
    Filed: May 19, 2023
    Publication date: November 21, 2024
    Inventor: Douglas Edward Ivers
  • Publication number: 20230069771
    Abstract: A drive unit for intravascular circulatory support systems may include a motor, a ball nut, a ball screw, and a bellows. The motor may include a rotor and a stator. The ball nut may be affixed to the rotor. The bellows may have a first end and an second end and a bellows cavity located there between. The first end may be in fixed position and the second end may be defined by a dynamic flange having a recess carried by the bellows cavity. In turn, the recess of the dynamic flange may carry at least a portion of the motor. The second end may also receive the ball screw. Rotation of the rotor causes linear motion of the ball screw within the ball nut to actuate the bellows.
    Type: Application
    Filed: August 1, 2022
    Publication date: March 2, 2023
    Inventor: Douglas Edward Ivers
  • Publication number: 20220288380
    Abstract: The present disclosure is directed towards systems and methods built for predictively timing the inflation and/or deflation of an intra-aortic balloon pump. A controller operates in three states: (1) initialization state, (2) learning state, and (3) peak detection state. The controller decomposes a patient's electrocardiogram signal to a power signal. It then learns characteristics of the patient's electrocardiogram signal during the learning state and computes adaptive threshold parameter values. During the peak detection state, the controller applies the learnt threshold parameter values on a current electrocardiogram signal to identify occurrence and timings of R peaks in the electrocardiogram signal. The R-to-R peak timings are then used to trigger inflation of an intra-aortic balloon pump.
    Type: Application
    Filed: March 29, 2022
    Publication date: September 15, 2022
    Inventors: Robert M. Smith, Nagarjuna Reddy Chinta, Ryan Daniel McCormick, Douglas Edward Ivers, Cranos M. Williams, Divyakumar Mahiman Badheka, Hubert Troy Nagle, JR., Sai Bhargav Dasari, Shamim Samadi
  • Patent number: 11285313
    Abstract: The present disclosure is directed towards systems and methods built for predictively timing the inflation and/or deflation of an intra-aortic balloon pump. A controller operates in three states: (1) initialization state, (2) learning state, and (3) peak detection state. The controller decomposes a patient's electrocardiogram signal to a power signal. It then learns characteristics of the patient's electrocardiogram signal during the learning state and computes adaptive threshold parameter values. During the peak detection state, the controller applies the learnt threshold parameter values on a current electrocardiogram signal to identify occurrence and timings of R peaks in the electrocardiogram signal. The R-to-R peak timings are then used to trigger inflation of an intra-aortic balloon pump.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: March 29, 2022
    Assignee: NuPulseCV, Inc.
    Inventors: Robert M. Smith, Nagarjuna Reddy Chinta, Ryan Daniel McCormick, Douglas Edward Ivers, Cranos M. Williams, Divyakumar Mahiman Badheka, Hubert Troy Nagle, Jr., Sai Bhargav Dasari, Shamim Samadi
  • Publication number: 20200345911
    Abstract: The present disclosure is directed towards systems and methods built for predictively timing the inflation and/or deflation of an intra-aortic balloon pump. A controller operates in three states: (1) initialization state, (2) learning state, and (3) peak detection state. The controller decomposes a patient's electrocardiogram signal to a power signal. It then learns characteristics of the patient's electrocardiogram signal during the learning state and computes adaptive threshold parameter values. During the peak detection state, the controller applies the learnt threshold parameter values on a current electrocardiogram signal to identify occurrence and timings of R peaks in the electrocardiogram signal. The R-to-R peak timings are then used to trigger inflation of an intra-aortic balloon pump.
    Type: Application
    Filed: May 2, 2019
    Publication date: November 5, 2020
    Inventors: Robert M. Smith, Nagarjuna Reddy Chinta, Ryan Daniel McCormick, Douglas Edward Ivers
  • Publication number: 20200345910
    Abstract: The present disclosure is directed towards systems and methods built for predictively timing the inflation and/or deflation of an intra-aortic balloon pump. A controller operates in three states: (1) initialization state, (2) learning state, and (3) peak detection state. The controller decomposes a patient's electrocardiogram signal to a power signal. It then learns characteristics of the patient's electrocardiogram signal during the learning state and computes adaptive threshold parameter values. During the peak detection state, the controller applies the learnt threshold parameter values on a current electrocardiogram signal to identify occurrence and timings of R peaks in the electrocardiogram signal. The R-to-R peak timings are then used to trigger inflation of an intra-aortic balloon pump.
    Type: Application
    Filed: May 2, 2019
    Publication date: November 5, 2020
    Inventors: Robert M. Smith, Nagarjuna Reddy Chinta, Ryan Daniel McCormick, Douglas Edward Ivers, Cranos M. Williams, Divyakumar Mahiman Badheka, Hubert Troy Nagle, JR., Sai Bhargav Dasari, Shamim Samadi