Patents by Inventor Hitinder S. Gurm

Hitinder S. Gurm 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: 20240130746
    Abstract: Methods for performing non-invasive thrombolysis with ultrasound using, in some embodiments, one or more ultrasound transducers to focus or place a high intensity ultrasound beam onto a blood clot (thrombus) or other vascular inclusion or occlusion (e.g., clot in the dialysis graft, deep vein thrombosis, superficial vein thrombosis, arterial embolus, bypass graft thrombosis or embolization, pulmonary embolus) which would be ablated (eroded, mechanically fractionated, liquefied, or dissolved) by ultrasound energy. The process can employ one or more mechanisms, such as of cavitational, sonochemical, mechanical fractionation, or thermal processes depending on the acoustic parameters selected. This general process, including the examples of application set forth herein, is henceforth referred to as “Thrombolysis.
    Type: Application
    Filed: June 4, 2023
    Publication date: April 25, 2024
    Inventors: Adam D. MAXWELL, Zhen XU, Hitinder S. GURM, Charles A. CAIN
  • Patent number: 11701134
    Abstract: Methods for performing non-invasive thrombolysis with ultrasound using, in some embodiments, one or more ultrasound transducers to focus or place a high intensity ultrasound beam onto a blood clot (thrombus) or other vascular inclusion or occlusion (e.g., clot in the dialysis graft, deep vein thrombosis, superficial vein thrombosis, arterial embolus, bypass graft thrombosis or embolization, pulmonary embolus) which would be ablated (eroded, mechanically fractionated, liquefied, or dissolved) by ultrasound energy. The process can employ one or more mechanisms, such as of cavitational, sonochemical, mechanical fractionation, or thermal processes depending on the acoustic parameters selected. This general process, including the examples of application set forth herein, is henceforth referred to as “Thrombolysis.
    Type: Grant
    Filed: June 10, 2022
    Date of Patent: July 18, 2023
    Assignee: The Regents of the University of Michigan
    Inventors: Adam D. Maxwell, Zhen Xu, Hitinder S. Gurm, Charles A. Cain
  • Publication number: 20220409869
    Abstract: A dynamic balloon angioplasty system for applying a dynamic pressure to fracture hardened materials embedded within an elastic conduit. The system having a pressure source system outputting at least a first predetermined pressure from a pressure source outlet, and an angioplasty unit fluidly coupled to the pressure source outlet receiving at least the first predetermined pressure. The angioplasty unit having an angioplasty inflation device, an angioplasty balloon connector, and an oscillating mechanism selectively actuated to output a plurality of pressure pulses to the angioplasty balloon via a fluid communication path. A control system is configured to determine an optimal hydraulic pressure oscillation frequency and amplitude for a given procedure and output a control signal to the oscillating mechanism, and monitor a pressure signal to detect fracture of the hardened material within the elastic conduit or system failure or leakage.
    Type: Application
    Filed: August 29, 2022
    Publication date: December 29, 2022
    Inventors: Robert CHISENA, Hitinder S. GURM, Matthew HILDNER, Yihao ZHENG, Albert SHIH
  • Publication number: 20220323088
    Abstract: Methods for performing non-invasive thrombolysis with ultrasound using, in some embodiments, one or more ultrasound transducers to focus or place a high intensity ultrasound beam onto a blood clot (thrombus) or other vascular inclusion or occlusion (e.g., clot in the dialysis graft, deep vein thrombosis, superficial vein thrombosis, arterial embolus, bypass graft thrombosis or embolization, pulmonary embolus) which would be ablated (eroded, mechanically fractionated, liquefied, or dissolved) by ultrasound energy. The process can employ one or more mechanisms, such as of cavitational, sonochemical, mechanical fractionation, or thermal processes depending on the acoustic parameters selected. This general process, including the examples of application set forth herein, is henceforth referred to as “Thrombolysis.
    Type: Application
    Filed: June 10, 2022
    Publication date: October 13, 2022
    Inventors: Adam D. MAXWELL, Zhen XU, Hitinder S. GURM, Charles A. CAIN
  • Patent number: 11464949
    Abstract: A dynamic balloon angioplasty system for applying a dynamic pressure to fracture hardened materials embedded within an elastic conduit. The system having a pressure source system outputting at least a first predetermined pressure from a pressure source outlet, and an angioplasty unit fluidly coupled to the pressure source outlet receiving at least the first predetermined pressure. The angioplasty unit having an angioplasty inflation device, an angioplasty balloon connector, and an oscillating mechanism selectively actuated to output a plurality of pressure pulses to the angioplasty balloon via a fluid communication path. A control system is configured to determine an optimal hydraulic pressure oscillation frequency and amplitude for a given procedure and output a control signal to the oscillating mechanism, and monitor a pressure signal to detect fracture of the hardened material within the elastic conduit or system failure or leakage.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: October 11, 2022
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Robert Chisena, Hitinder S. Gurm, Matthew Hildner, Yihao Zheng, Albert Shih
  • Publication number: 20220219019
    Abstract: A histotripsy therapy system configured for the treatment of brain tissue is provided, which may include any number of features. In one embodiment, the system includes an ultrasound therapy transducer, a drainage catheter, and a plurality of piezoelectric sensors disposed in the drainage catheter. The ultrasound therapy is configured to transmit ultrasound pulses into the brain to generate cavitation that liquefies a target tissue in the brain. The drainage catheter is configured to detect the ultrasound pulses. An aberration correction algorithm can be executed by the system based on the ultrasound pulses measured by the drainage catheter to automatically correct for an aberration effect caused by the ultrasound pulses passing through a skullcap of the patient.
    Type: Application
    Filed: August 20, 2021
    Publication date: July 14, 2022
    Inventors: Zhen XU, Jonathan SUKOVICH, Aditya S. PANDEY, Charles A. CAIN, Hitinder S. GURM
  • Patent number: 11364042
    Abstract: Methods for performing non-invasive thrombolysis with ultrasound using, in some embodiments, one or more ultrasound transducers to focus or place a high intensity ultrasound beam onto a blood clot (thrombus) or other vascular inclusion or occlusion (e.g., clot in the dialysis graft, deep vein thrombosis, superficial vein thrombosis, arterial embolus, bypass graft thrombosis or embolization, pulmonary embolus) which would be ablated (eroded, mechanically fractionated, liquefied, or dissolved) by ultrasound energy. The process can employ one or more mechanisms, such as of cavitational, sonochemical, mechanical fractionation, or thermal processes depending on the acoustic parameters selected. This general process, including the examples of application set forth herein, is henceforth referred to as “Thrombolysis.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: June 21, 2022
    Assignee: The Regents of the University of Michigan
    Inventors: Adam D. Maxwell, Zhen Xu, Hitinder S. Gurm, Charles A. Cain
  • Patent number: 11135454
    Abstract: A histotripsy therapy system configured for the treatment of brain tissue is provided, which may include any number of features. In one embodiment, the system includes an ultrasound therapy transducer, a drainage catheter, and a plurality of piezoelectric sensors disposed in the drainage catheter. The ultrasound therapy is configured to transmit ultrasound pulses into the brain to generate cavitation that liquefies a target tissue in the brain. The drainage catheter is configured to detect the ultrasound pulses. An aberration correction algorithm can be executed by the system based on the ultrasound pulses measured by the drainage catheter to automatically correct for an aberration effect caused by the ultrasound pulses passing through a skullcap of the patient.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: October 5, 2021
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Zhen Xu, Jonathan Sukovich, Aditya S. Pandey, Charles A. Cain, Hitinder S. Gurm
  • Patent number: 10945757
    Abstract: A method of two-phase atherectomy for removal of plaque within an artery forming a stenosis including a first phase of rotational drilling by exerting a rotational force on a cutter to form a channel within the plaque having a diameter substantially equal to a diameter of the cutter—the cutter being rotated at a first rotational speed sufficient to maintain rotation of the cutter about a stationary rotational axis—and a second phase of orbital impact by exerting a rotational force on the cutter to result in radial orbital motion of the cutter within the channel resulting in periodic impact of the cutter upon the plaque to form micro-fractures within the plaque and enlarge the diameter of the channel to a diameter substantially greater than the diameter of the cutter—the cutter being rotated at a second rotational speed to result in the radial orbital motion of the cutter.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: March 16, 2021
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Hitinder S. Gurm, Yao Liu, Yang Liu, Yihao Zheng, Albert Shih
  • Publication number: 20200046949
    Abstract: A dynamic balloon angioplasty system for applying a dynamic pressure to fracture hardened materials embedded within an elastic conduit. The system having a pressure source system outputting at least a first predetermined pressure from a pressure source outlet, and an angioplasty unit fluidly coupled to the pressure source outlet receiving at least the first predetermined pressure. The angioplasty unit having an angioplasty inflation device, an angioplasty balloon connector, and an oscillating mechanism selectively actuated to output a plurality of pressure pulses to the angioplasty balloon via a fluid communication path. A control system is configured to determine an optimal hydraulic pressure oscillation frequency and amplitude for a given procedure and output a control signal to the oscillating mechanism, and monitor a pressure signal to detect fracture of the hardened material within the elastic conduit or system failure or leakage.
    Type: Application
    Filed: October 16, 2019
    Publication date: February 13, 2020
    Inventors: Robert CHISENA, Hitinder S. GURM, Matthew HILDNER, Yihao ZHENG, Albert SHIH
  • Publication number: 20190262035
    Abstract: A method of two-phase atherectomy for removal of plaque within an artery forming a stenosis including a first phase of rotational drilling by exerting a rotational force on a cutter to form a channel within the plaque having a diameter substantially equal to a diameter of the cutter—the cutter being rotated at a first rotational speed sufficient to maintain rotation of the cutter about a stationary rotational axis—and a second phase of orbital impact by exerting a rotational force on the cutter to result in radial orbital motion of the cutter within the channel resulting in periodic impact of the cutter upon the plaque to form micro-fractures within the plaque and enlarge the diameter of the channel to a diameter substantially greater than the diameter of the cutter—the cutter being rotated at a second rotational speed to result in the radial orbital motion of the cutter.
    Type: Application
    Filed: October 17, 2017
    Publication date: August 29, 2019
    Inventors: Hitinder S. GURM, Yao LIU, Yang LIU, Yihao ZHENG, Albert SHIH
  • Publication number: 20190216478
    Abstract: Methods for performing non-invasive thrombolysis with ultrasound using, in some embodiments, one or more ultrasound transducers to focus or place a high intensity ultrasound beam onto a blood clot (thrombus) or other vascular inclusion or occlusion (e.g., clot in the dialysis graft, deep vein thrombosis, superficial vein thrombosis, arterial embolus, bypass graft thrombosis or embolization, pulmonary embolus) which would be ablated (eroded, mechanically fractionated, liquefied, or dissolved) by ultrasound energy. The process can employ one or more mechanisms, such as of cavitational, sonochemical, mechanical fractionation, or thermal processes depending on the acoustic parameters selected. This general process, including the examples of application set forth herein, is henceforth referred to as “Thrombolysis.
    Type: Application
    Filed: March 5, 2019
    Publication date: July 18, 2019
    Inventors: Adam D. MAXWELL, Zhen XU, Hitinder S. GURM, Charles A. CAIN
  • Patent number: 10219815
    Abstract: Methods for performing non-invasive thrombolysis with ultrasound using, in some embodiments, one or more ultrasound transducers to focus or place a high intensity ultrasound beam onto a blood clot (thrombus) or other vascular inclusion or occlusion (e.g., clot in the dialysis graft, deep vein thrombosis, superficial vein thrombosis, arterial embolus, bypass graft thrombosis or embolization, pulmonary embolus) which would be ablated (eroded, mechanically fractionated, liquefied, or dissolved) by ultrasound energy. The process can employ one or more mechanisms, such as of cavitational, sonochemical, mechanical fractionation, or thermal processes depending on the acoustic parameters selected. This general process, including the examples of application set forth herein, is henceforth referred to as “Thrombolysis.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: March 5, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Adam Maxwell, Zhen Xu, Hitinder S. Gurm, Charles A. Cain
  • Publication number: 20180257217
    Abstract: A load-bearing exoskeleton capable of supporting at least part of the weight of a shielding garment. Additionally, some of the user's upper-body weight, resulting from the rotational moment about the hip caused by the user's trunk in flexion, may be supported. The load-bearing exoskeleton may be a completely passive orthosis, or it may include one or more active orthotic elements. The exoskeleton may include one or more sagittally-extending load-bearing structures that provide a supportive force to counteract at least some of the weight of the shielding garment. The exoskeleton may include a shielding garment attachment mechanism, a pelvis assembly, and one or more leg assemblies that are configured to allow for user movement when in one or more unlocked positions, while facilitating a greater transmission of weight of a shielding garment when in one or more locked positions.
    Type: Application
    Filed: September 2, 2016
    Publication date: September 13, 2018
    Inventors: Daniel D. Johnson, Hitinder S. Gurm
  • Publication number: 20180154186
    Abstract: A histotripsy therapy system configured for the treatment of brain tissue is provided, which may include any number of features. In one embodiment, the system includes an ultrasound therapy transducer, a drainage catheter, and a plurality of piezoelectric sensors disposed in the drainage catheter. The ultrasound therapy is configured to transmit ultrasound pulses into the brain to generate cavitation that liquefies a target tissue in the brain. The drainage catheter is configured to detect the ultrasound pulses. An aberration correction algorithm can be executed by the system based on the ultrasound pulses measured by the drainage catheter to automatically correct for an aberration effect caused by the ultrasound pulses passing through a skullcap of the patient.
    Type: Application
    Filed: June 23, 2016
    Publication date: June 7, 2018
    Inventors: Zhen XU, Jonathan SUKOVICH, Aditya S. PANDEY, Charles A. CAIN, Hitinder S. GURM
  • Publication number: 20090177085
    Abstract: Methods for performing non-invasive thrombolysis with ultrasound using, in some embodiments, one or more ultrasound transducers to focus or place a high intensity ultrasound beam onto a blood clot (thrombus) or other vascular inclusion or occlusion (e.g., clot in the dialysis graft, deep vein thrombosis, superficial vein thrombosis, arterial embolus, bypass graft thrombosis or embolization, pulmonary embolus) which would be ablated (eroded, mechanically fractionated, liquefied, or dissolved) by ultrasound energy. The process can employ one or more mechanisms, such as of cavitational, sonochemical, mechanical fractionation, or thermal processes depending on the acoustic parameters selected. This general process, including the examples of application set forth herein, is henceforth referred to as “Thrombolysis.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 9, 2009
    Inventors: Adam Maxwell, Zhen Xu, Hitinder S. Gurm, Charles A. Cain