Patents by Inventor Youngjae Chun

Youngjae Chun 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).

  • Patent number: 11977419
    Abstract: An electronic device is disclosed, including: a first housing, a second housing, a folding housing that pivotably connects the first housing and second housing, a flexible display spanning the first, second and folding housings, a printed circuit board (PCB), a first camera module at least partly visible through a surface of the second housing, a first magnet disposed in the first housing, a second magnet disposed in the second housing, and a hall sensor disposed on the PCB, the hall sensor configured to detect magnetic flux caused by motion of the first and/or second magnet in folding and unfolding of the electronic device so as facilitate determination of a configuration state of the electronic device.
    Type: Grant
    Filed: June 10, 2022
    Date of Patent: May 7, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Youngjae Kim, Woosung Chun, Changkwan Yang, Kwanghee Ryu, Hyunju Hong
  • Publication number: 20230338034
    Abstract: A medical assembly includes a perfusion device that has a self-expandable stent. The stent has a proximal end portion and a distal end portion. The proximal end portion tapers from the distal end to a proximal end thereof. A blood-impermeable cover extends at least partially over the distal end portion and the proximal end portion of the stent. The perfusion device further includes an elongated shaft having a proximal end a distal end, wherein the distal end is fixedly secured to the proximal end of the proximal end portion of the stent. The assembly further includes a sheath configured to retain the stent and the cover is a radially collapsed state for insertion into a vessel of a patient, wherein the stent and the cover are expandable from the radially collapsed state to a radially expanded, deployed state within the vessel when deployed from the sheath.
    Type: Application
    Filed: June 30, 2023
    Publication date: October 26, 2023
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Bryan W. Tillman, William W. Clark, Sung Kwon Cho, Youngjae Chun
  • Patent number: 11793961
    Abstract: A temporary esophagus occlusion device for providing temporary occlusion of the esophagus during intubation of a in patient includes a frame configured to transition between a contracted state, in which it can be swallowed by the patient, and an expanded state, wherein in the expanded state, the frame has a maximum outer diameter sufficient to span an inner diameter of the esophagus of the patient. The device also includes a flexible cover connected to and extending over at least a portion of the frame when the frame is in the expanded state to at least partially block flow of fluid and/or solid materials through the esophagus and a guidewire attached to the frame, sized to be swallowed by the patient along with the frame and having a proximal end portion configured to remain external to the patient's body and a distal end connected to the frame.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: October 24, 2023
    Assignees: University of Pittsburgh—Of the Commonwealth System of Higher Education, UPMC
    Inventors: Youngjae Chun, Philip Charles Carullo
  • Patent number: 11737760
    Abstract: The present disclosure concerns embodiments of an implantable perfusion device that can be implanted in an injured blood vessel to control bleeding without occluding the vessel. In one specific implementation, the perfusion device can be implanted percutaneously into a patient's descending aorta to control bleeding at the site of a ruptured portion of the aorta (known as torso hemorrhage) while still allowing for the antegrade flow of blood from a location upstream of the ruptured portion of the aorta to a location downstream of the ruptured portion of the aorta. The perfusion device can be left inside the patient as the patient is transported to a medical facility where the injury can be repaired. Following repair of the vessel, the perfusion device can be withdrawn from the patient.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: August 29, 2023
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Bryan W. Tillman, William W. Clark, Sung Kwon Cho, Youngjae Chun
  • Publication number: 20230157275
    Abstract: In one representative embodiment, a method of perfusing organs in a patient's body is provided. The method comprises isolating the visceral arteries and the visceral veins from blood circulating through the patient's heart and perfusing the visceral arteries, the visceral veins, and the abdominal organs with a perfusion fluid that is fluidly separated from the blood circulating through the patient's heart. While the visceral arteries and the visceral veins are isolated, and the visceral arteries, the visceral veins, and the abdominal organs are being perfused, the patient's blood is allowed to continue to circulate through the heart.
    Type: Application
    Filed: January 9, 2023
    Publication date: May 25, 2023
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Bryan W. Tillman, Amit D. Tevar, Youngjae Chun
  • Publication number: 20230059358
    Abstract: A multi-lumen implantable device configured to deliver a therapeutic agent to a selected portion of a blood vessel is disclosed. As one example, an implantable device includes a first lumen configured to flow blood from an upstream end to a downstream end of the device when implanted in a blood vessel; a second lumen fluidly separated from the first lumen and configured for introducing a therapeutic agent to a selected, first portion of a wall of the blood vessel, between the upstream end and the downstream end of the device; and at least one sealing member configured to block the therapeutic agent from entering a second portion of the wall of the blood vessel, between the upstream end and the downstream end of the device.
    Type: Application
    Filed: January 22, 2021
    Publication date: February 23, 2023
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Bryan W. Tillman, Youngjae Chun
  • Patent number: 11559055
    Abstract: In one representative embodiment, a method of perfusing organs in a patient's body is provided. The method comprises isolating the visceral arteries and the visceral veins from blood circulating through the patient's heart and perfusing the visceral arteries, the visceral veins, and the abdominal organs with a perfusion fluid that is fluidly separated from the blood circulating through the patient's heart. While the visceral arteries and the visceral veins are isolated, and the visceral arteries, the visceral veins, and the abdominal organs are being perfused, the patient's blood is allowed to continue to circulate through the heart.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: January 24, 2023
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Bryan W. Tillman, Amit D. Tevar, Youngjae Chun
  • Publication number: 20220160526
    Abstract: The invention relates to endovascular medical implant devices and materials of composition for forming these devices to provide improved mechanical properties and biodegradability. The devices include a combination or integration of superelastic material, biodegradable metal and, thin film nitinol and/or biodegradable polymer. A structural frame is formed of individual elongated pieces composed of biodegradable metal. These pieces are joined together by connector pieces composed of superelastic material. At least a portion of the structural frame has deposited thereon the thin film nitinol and/or biodegradable polymer. The structural frame of the device is collapsible for insertion in a delivery tube and, recoverable for deployment and placement in a vascular location of a patient body.
    Type: Application
    Filed: December 2, 2020
    Publication date: May 26, 2022
    Applicant: UNIVERSITY OF PITTSBURGH - OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
    Inventors: YOUNGJAE CHUN, WILLIAM R. WAGNER, XINZHU GU, PETER DREW WEARDEN, TOMO YOSHIZUMI
  • Publication number: 20210052363
    Abstract: Disclosed are implantable tubular devices having a fenestration in a wall of the tubular device and a conductive coil positioned around the fenestration, such that the coil is operable to generate a magnetic field when electrical current flows through the coil. The magnetic field can be used to draw a ferrous or magnetically tipped guidewire or other device to and through the fenestration. In the example of a fenestrated endovascular graft, the coil can be used to draw a guidewire out through a fenestration into a branch blood vessel, such that the guidewire can be used to deliver a branch of the graft through the fenestration into the branch vessel. A power source can be contained in a nosecone.
    Type: Application
    Filed: January 8, 2019
    Publication date: February 25, 2021
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Bryan W. Tillman, Catherine C. Go, Youngjae Chun
  • Patent number: 10888442
    Abstract: The invention relates to endovascular medical implant devices and materials of composition for forming these devices to provide improved mechanical properties and biodegradability. The devices include a combination or integration of superelastic material, biodegradable metal and, thin film nitinol and/or biodegradable polymer. A structural frame is formed of individual elongated pieces composed of biodegradable metal. These pieces are joined together by connector pieces composed of superelastic material. At least a portion of the structural frame has deposited thereon the thin film nitinol and/or biodegradable polymer. The structural frame of the device is collapsible for insertion in a delivery tube and, recoverable for deployment and placement in a vascular location of a patient body.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: January 12, 2021
    Assignee: UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
    Inventors: Youngjae Chun, William R. Wagner, Xinzhu Gu, Peter Drew Wearden, Tomo Yoshizumi
  • Publication number: 20200179630
    Abstract: A temporary esophagus occlusion device for providing temporary occlusion of the esophagus during intubation of a in patient includes a frame configured to transition between a contracted state, in which it can be swallowed by the patient, and an expanded state, wherein in the expanded state, the frame has a maximum outer diameter sufficient to span an inner diameter of the esophagus of the patient. The device also includes a flexible cover connected to and extending over at least a portion of the frame when the frame is in the expanded state to at least partially block flow of fluid and/or solid materials through the esophagus and a guidewire attached to the frame, sized to be swallowed by the patient along with the frame and having a proximal end portion configured to remain external to the patient's body and a distal end connected to the frame.
    Type: Application
    Filed: October 18, 2017
    Publication date: June 11, 2020
    Inventors: Youngjae Chun, Philip Charles Carullo
  • Patent number: 10582995
    Abstract: Described herein are intra-oral prostheses that can help replace or augment the function of the native tongue, such as to assist with swallowing. Disclosed prostheses can provide mechanical force, based on the power of mastication, to propel a food bolus into the pharyngeal phase of swallowing. Disclosed prostheses can be used to enhance swallowing rehabilitation as a temporary aid and/or can be used to permanently replace lost tongue functionality. Also disclosed are other anatomical prostheses, such as to provide power for the articulation of dysfunctional extremities, by transforming mechanical force from another nearby functioning muscle group.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: March 10, 2020
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Neil Gildener-Leapman, Youngjae Chun
  • Publication number: 20190374226
    Abstract: The present disclosure concerns embodiments of an implantable perfusion device that can be implanted in an injured blood vessel to control bleeding without occluding the vessel. In one specific implementation, the perfusion device can be implanted percutaneously into a patient's descending aorta to control bleeding at the site of a ruptured portion of the aorta (known as torso hemorrhage) while still allowing for the antegrade flow of blood from a location upstream of the ruptured portion of the aorta to a location downstream of the ruptured portion of the aorta. The perfusion device can be left inside the patient as the patient is transported to a medical facility where the injury can be repaired. Following repair of the vessel, the perfusion device can be withdrawn from the patient.
    Type: Application
    Filed: August 6, 2019
    Publication date: December 12, 2019
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Bryan W. Tillman, William W. Clark, Sung Kwon Cho, Youngjae Chun
  • Patent number: 10413301
    Abstract: The present disclosure concerns embodiments of an implantable perfusion device that can be implanted in an injured blood vessel to control bleeding without occluding the vessel. In one specific implementation, the perfusion device can be implanted percutaneously into a patient's descending aorta to control bleeding at the site of a ruptured portion of the aorta (known as torso hemorrhage) while still allowing for the antegrade flow of blood from a location upstream of the ruptured portion of the aorta to a location downstream of the ruptured portion of the aorta. The perfusion device can be left inside the patient as the patient is transported to a medical facility where the injury can be repaired. Following repair of the vessel, the perfusion device can be withdrawn from the patient.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: September 17, 2019
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Bryan W. Tillman, William W. Clark, Sung Kwon Cho, Youngjae Chun
  • Publication number: 20190246631
    Abstract: In one representative embodiment, a method of perfusing organs in a patient's body is provided. The method comprises isolating the visceral arteries and the visceral veins from blood circulating through the patient's heart and perfusing the visceral arteries, the visceral veins, and the abdominal organs with a perfusion fluid that is fluidly separated from the blood circulating through the patient's heart. While the visceral arteries and the visceral veins are isolated, and the visceral arteries, the visceral veins, and the abdominal organs are being perfused, the patient's blood is allowed to continue to circulate through the heart.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 15, 2019
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Bryan W. Tillman, Amit D. Tevar, Youngjae Chun
  • Patent number: 10278384
    Abstract: In one representative embodiment, a method of perfusing organs in a patient's body is provided. The method comprises isolating the visceral arteries and the visceral veins from blood circulating through the patient's heart and perfusing the visceral arteries, the visceral veins, and the abdominal organs with a perfusion fluid that is fluidly separated from the blood circulating through the patient's heart. While the visceral arteries and the visceral veins are isolated, and the visceral arteries, the visceral veins, and the abdominal organs are being perfused, the patient's blood is allowed to continue to circulate through the heart.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: May 7, 2019
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Bryan W. Tillman, Amit D. Tevar, Youngjae Chun
  • Patent number: 9833309
    Abstract: A vascular implant, comprising a sheet comprising thin film nickel titanium (NiTi), wherein the sheet has at least one super-hydrophilic surface having a water contact angle of less than approximately 5 degrees. The sheet is configured to have a compacted form having a first internal diameter and a deployed form having a second internal diameter larger than the first internal diameter. The sheet may be delivered into a blood vessel in the compacted form and expanded to its deployed form at a treatment location within the blood vessel, wherein the stent is configured to expand onto an internal surface of the blood vessel and exert a radial force on said internal surface.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: December 5, 2017
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Daniel S. Levi, Gregory P. Carman, Youngjae Chun, Fernando Vinuela
  • Publication number: 20170340463
    Abstract: The invention relates to endovascular medical implant devices and materials of composition for forming these devices to provide improved mechanical properties and biodegradability. The devices include a combination or integration of superelastic material, biodegradable metal and, thin film nitinol and/or biodegradable polymer. A structural frame is formed of individual elongated pieces composed of biodegradable metal. These pieces are joined together by connector pieces composed of superelastic material. At least a portion of the structural frame has deposited thereon the thin film nitinol and/or biodegradable polymer. The structural frame of the device is collapsible for insertion in a delivery tube and, recoverable for deployment and placement in a vascular location of a patient body.
    Type: Application
    Filed: November 11, 2015
    Publication date: November 30, 2017
    Applicant: UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
    Inventors: YOUNGJAE CHUN, WILLIAM R. WAGNER, XINZHU GU, PETER DREW WEARDEN, TOMO YOSHIZUMI
  • Patent number: 9730783
    Abstract: A flow diverter is described and fabricated using ultra-thin porous thin-film Nitinol, and is configured for implantation to a treatment site within a vessel for significant reduction in an intra-aneurismal flow velocity and vorticity. Using small size pores in a coverage area of only 10%, a 90% reduction in flow velocity into a pseudo-aneurysm can be achieved, with an almost immediate cessation of flow into an anatomical feature such as aneurysm sac in vivo. The size of the holes can be tailored to be any shape and range in size from 1-400 ?m using photolithography and from 5-1000 nm using ebeam lithography.
    Type: Grant
    Filed: November 3, 2012
    Date of Patent: August 15, 2017
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Gregory P. Carman, Daniel S. Levi, Youngjae Chun, Fernando Vinuela
  • Publication number: 20170164605
    Abstract: In one representative embodiment, a method of perfusing organs in a patient's body is provided. The method comprises isolating the visceral arteries and the visceral veins from blood circulating through the patient's heart and perfusing the visceral arteries, the visceral veins, and the abdominal organs with a perfusion fluid that is fluidly separated from the blood circulating through the patient's heart. While the visceral arteries and the visceral veins are isolated, and the visceral arteries, the visceral veins, and the abdominal organs are being perfused, the patient's blood is allowed to continue to circulate through the heart.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 15, 2017
    Applicant: University of Pittsburgh - Of the Commonwealth Sys tem of Higher Education
    Inventors: Bryan W. Tillman, Amit D. Tevar, Youngjae Chun