Patents by Inventor YEH CHAN AHN

YEH CHAN AHN 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: 11771315
    Abstract: Disclosed is a mobile colposcopy device for early diagnosis of cervical cancer, which includes an insertion unit which is inserted into the vagina of a woman, has a penetrating hole formed in one end coming into contact with the uterus, and is provided with a capturing path communicating with the penetrating hole, a capturing unit which is provided in the insertion unit so as to capture the cervix through the capturing path, and a lighting unit which is provided on the capturing path of the insertion unit and irradiates a lighting to the cervix through the penetrating hole. According to the present disclosure, the mobile colposcopy device for early diagnosis of cervical cancer can be simply and easily used so as to perform cervical cancer screening using a mobile colposcopy without environmental constraints including hospitals and allows women to early diagnose cervical cancer.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: October 3, 2023
    Assignees: Pukyong National University Industry—University Cooperation Foundation, KOSIN UNIVERSITY INDUSTRY—ACADEMY COOPERATION
    Inventors: Yeh-Chan Ahn, Daa Young Kwon, Yi Keun Kim, Chul Ho Oak, Hang Goo Yun, Sung Won Kim
  • Patent number: 11627880
    Abstract: The present invention relates to a real-time parathyroid imaging apparatus including: a light source including an excitation filter capable of exciting parathyroid glands; and a camera including an image sensor and an emission filter of which a transmissivity ratio between a visible light region and a near-infrared emission wavelength region is N:1 (here, N<1). Through the present invention, a system may be implemented whereby a surgeon may acquire, in real-time during an operation, an autofluorescence image of the parathyroid glands by using a near-infrared light source, and an auto focus function may be used, and visible light and near-infrared autofluorescence images may be simultaneously fused and acquired without having to turn off the lights in an operating room.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: April 18, 2023
    Assignees: PUKYONG NATIONAL UNIVERSITY INDUSTRYUNIVERSITY COOPERATION FOUNDATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yeh-Chan Ahn, Sung Chul Bae
  • Patent number: 11609425
    Abstract: Augmented reality glasses with auto coregistration of an invisible field on visible reality which allows eyes to recognize a real space and precisely performs coregistration on only diagnosis and treatment information of invisible light, which is emitted from a specific area, to the real space.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: March 21, 2023
    Assignee: Pukyong National University Industry-University Cooperation Foundation
    Inventor: Yeh-Chan Ahn
  • Patent number: 11589802
    Abstract: The present invention relates to a real-time parathyroid imaging device, and a real-time parathyroid imaging device for displaying only a parathyroid in a thyroid with a separate mark, the real-time parathyroid imaging device including: a light source configured to emit light to a thyroid and excite a parathyroid; a detector configured to detect an emission spectrum of the parathyroid excited and emitted by the light source; an excitation filter disposed in front of the light source; and an emission filter disposed in front of the detector. When central Compartment Neck Dissection (CCND) for thyroidectomy is performed, the present invention clearly marks a parathyroid by an autofluorescent image, thereby allowing a surgeon to more simply and safely perform the CCND while leaving the parathyroid.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: February 28, 2023
    Assignee: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Yeh-Chan Ahn, Sung-Won Kim, Kang-Dae Lee, Hyoung-Shin Lee, Chul-Ho Oak, Seo-Hyun Song, Hyun-Wook Kang, Joon-Shik You
  • Patent number: 11559248
    Abstract: The present invention relates to a parathyroid sensing system, and includes: a modulator for generating a modulation signal having a predetermined frequency; a lock-in amplifier and a light source which receive information on the modulation signal; an excitation filter for transmitting, among light emitted from the light source, only excitation light that excites parathyroid glands; an emission filter connected to a probe and selectively transmitting only fluorescence emitted from the parathyroid glands; a near-infrared sensor for sensing the autofluorescence that has passed through the emission filter, and converting the sensed autofluorescence into an electric signal; and a speaker for generating an alarm through the electric signal. Through the present invention, the locations of the parathyroid glands may be precisely identified even when lights are turned on in an operating room, and convenience may be provided by alerting a surgeon by means of an alarm when the parathyroid glands are detected.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: January 24, 2023
    Assignees: PUKYONG NATIONAL UNIVERSITY INDUSTRYUNIVERSITY COOPERATION FOUNDATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yeh-Chan Ahn, Sung Chul Bae
  • Publication number: 20220361842
    Abstract: The present invention relates to a portable probe for photoacoustic tomography, capable of performing line-by-line scanning or area-by-area scanning by using a small number of light inputs; and a real-time photoacoustic tomography device. The probe for photoacoustic tomography includes: a lens receiving light inputs from an optical fiber so as to make the same proceed as small diameter parallel light; a Powell lens receiving the small diameter parallel light and generating a line beam of a predetermined thickness, and allowing energy dispersed on a line to be uniform on the entire line; a lens making the line beam pass therethrough such that the line beam has a predetermined width and a reduced thickness so as to be line-focused at a target area; an acoustic reflection glass for separating, from a light path, an acoustic wave outputted from the target area; and an acoustic measurement unit for measuring acoustic strength.
    Type: Application
    Filed: July 29, 2022
    Publication date: November 17, 2022
    Applicant: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Chul Ho OAK, Eun Kee PARK, Jung-Eun PARK, Yeh Chan AHN
  • Patent number: 11432798
    Abstract: The present invention relates to a portable probe for photoacoustic tomography, capable of performing line-by-line scanning or area-by-area scanning by using a small number of light inputs; and a real-time photoacoustic tomography device. The probe for photoacoustic tomography includes: a lens receiving light inputs from an optical fiber so as to make the same proceed as small diameter parallel light; a Powell lens receiving the small diameter parallel light and generating a line beam of a predetermined thickness, and allowing energy dispersed on a line to be uniform on the entire line; a lens making the line beam pass therethrough such that the line beam has a predetermined width and a reduced thickness so as to be line-focused at a target area; an acoustic reflection glass for separating, from a light path, an acoustic wave outputted from the target area; and an acoustic measurement unit for measuring acoustic strength.
    Type: Grant
    Filed: September 7, 2020
    Date of Patent: September 6, 2022
    Assignee: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Chul Ho Oak, Eun Kee Park, Jung-Eun Park, Yeh Chan Ahn
  • Publication number: 20220087520
    Abstract: Disclosed is a mobile colposcopy device for early diagnosis of cervical cancer, which includes an insertion unit which is inserted into the vagina of a woman, has a penetrating hole formed in one end coming into contact with the uterus, and is provided with a capturing path communicating with the penetrating hole, a capturing unit which is provided in the insertion unit so as to capture the cervix through the capturing path, and a lighting unit which is provided on the capturing path of the insertion unit and irradiates a lighting to the cervix through the penetrating hole. According to the present disclosure, the mobile colposcopy device for early diagnosis of cervical cancer can be simply and easily used so as to perform cervical cancer screening using a mobile colposcopy without environmental constraints including hospitals and allows women to early diagnose cervical cancer.
    Type: Application
    Filed: September 21, 2021
    Publication date: March 24, 2022
    Applicants: Pukyong National University Industry-University Cooperation Foundation, KOSIN UNIVERSITY INDUSTRY-ACADEMY COOPERATION
    Inventors: Yeh-Chan AHN, Daa Young KWON, Yi Keun KIM, Chul Ho OAK, Hang Goo YUN, Sung Won KIM
  • Publication number: 20220003992
    Abstract: Augmented reality glasses with auto coregistration of an invisible field on visible reality which allows eyes to directly recognize a real space and precisely performs coregistration on only diagnosis and treatment information of invisible light, which is emitted from a specific area, to the real space. The augmented reality glasses include a glasses body, an invisible light emission unit configured to emit invisible light toward a target object, an input unit configured to input the invisible light emitted from the target object together with visible light to a waveguide, an information processing unit configured to convert invisible light image information received from the input unit into visible light image information which is recognizable by a person, and an image output unit configured to receive the visible light image information processed in the information processing unit and output the received visible light image information to two eyeballs in the waveguide.
    Type: Application
    Filed: June 30, 2021
    Publication date: January 6, 2022
    Applicant: Pukyong National University Industry-University
    Inventor: Yeh-Chan AHN
  • Publication number: 20200397404
    Abstract: The present invention relates to a portable probe for photoacoustic tomography, capable of performing line-by-line scanning or area-by-area scanning by using a small number of light inputs; and a real-time photoacoustic tomography device. The probe for photoacoustic tomography includes: a lens receiving light inputs from an optical fiber so as to make the same proceed as small diameter parallel light; a Powell lens receiving the small diameter parallel light and generating a line beam of a predetermined thickness, and allowing energy dispersed on a line to be uniform on the entire line; a lens making the line beam pass therethrough such that the line beam has a predetermined width and a reduced thickness so as to be line-focused at a target area; an acoustic reflection glass for separating, from a light path, an acoustic wave outputted from the target area; and an acoustic measurement unit for measuring acoustic strength.
    Type: Application
    Filed: September 7, 2020
    Publication date: December 24, 2020
    Applicant: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Chul Ho OAK, Eun Kee PARK, Jung-Eun PARK, Yeh Chan AHN
  • Publication number: 20200359956
    Abstract: The present invention relates to a parathyroid sensing system, and includes: a modulator for generating a modulation signal having a predetermined frequency; a lock-in amplifier and a light source which receive information on the modulation signal; an excitation filter for transmitting, among light emitted from the light source, only excitation light that excites parathyroid glands; an emission filter connected to a probe and selectively transmitting only fluorescence emitted from the parathyroid glands; a near-infrared sensor for sensing the autofluorescence that has passed through the emission filter, and converting the sensed autofluorescence into an electric signal; and a speaker for generating an alarm through the electric signal. Through the present invention, the locations of the parathyroid glands may be precisely identified even when lights are turned on in an operating room, and convenience may be provided by alerting a surgeon by means of an alarm when the parathyroid glands are detected.
    Type: Application
    Filed: November 5, 2018
    Publication date: November 19, 2020
    Applicants: PUKYONG NATIONAL UNIVERSITY INDUSTRYUNIVERSITY COOPERATION FOUNDATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yeh-Chan Ahn, Sung Chul Bae
  • Publication number: 20200281475
    Abstract: The present invention relates to a real-time parathyroid imaging apparatus including: a light source including an excitation filter capable of exciting parathyroid glands; and a camera including an image sensor and an emission filter of which a transmissivity ratio between a visible light region and a near-infrared emission wavelength region is N:1 (here, N<1). Through the present invention, a system may be implemented whereby a surgeon may acquire, in real-time during an operation, an autofluorescence image of the parathyroid glands by using a near-infrared light source, and an auto focus function may be used, and visible light and near-infrared autofluorescence images may be simultaneously fused and acquired without having to turn off the lights in an operating room.
    Type: Application
    Filed: November 5, 2018
    Publication date: September 10, 2020
    Applicants: PUKYONG NATIONAL UNIVERSITY INDUSTRYUNIVERSITY COOPERATION FOUNDATION, UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
    Inventors: Yeh-Chan Ahn, Sung Chul Bae
  • Publication number: 20200022640
    Abstract: The present invention relates to a real-time parathyroid imaging device, and a real-time parathyroid imaging device for displaying only a parathyroid in a thyroid with a separate mark, the real-time parathyroid imaging device including: a light source configured to emit light to a thyroid and excite a parathyroid; a detector configured to detect an emission spectrum of the parathyroid excited and emitted by the light source; an excitation filter disposed in front of the light source; and an emission filter disposed in front of the detector. When central Compartment Neck Dissection (CCND) for thyroidectomy is performed, the present invention clearly marks a parathyroid by an autofluorescent image, thereby allowing a surgeon to more simply and safely perform the CCND while leaving the parathyroid.
    Type: Application
    Filed: September 4, 2017
    Publication date: January 23, 2020
    Applicant: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Yeh-Chan Ahn, Sung-Won Kim, Kang-Dae Lee, Hyoung-Shin Lee, Chul-Ho Oak, Seo-Hyun Song, Hyun-Wook Kang, Joon-Shik You
  • Publication number: 20190320999
    Abstract: The present invention relates to: a portable probe for photoacoustic tomography, capable of performing line-by-line scanning or area-by-area scanning by using a small number of light inputs; and a real-time photoacoustic tomography device. The probe for photoacoustic tomography includes: a lens receiving light inputs from an optical fiber so as to make the same proceed as small diameter parallel light; a Powell lens receiving the small diameter parallel light and generating a line beam of a predetermined thickness, and allowing energy dispersed on a line to be uniform on the entire line; a lens making the line beam pass therethrough such that the line beam has a predetermined width and a reduced thickness so as to be line-focused at a target area; an acoustic reflection glass for separating, from a light path, an acoustic wave outputted from the target area; and an acoustic measurement unit for measuring acoustic strength.
    Type: Application
    Filed: October 23, 2017
    Publication date: October 24, 2019
    Applicant: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Sung Chul BAE, Chul Ho OAK, Eun Kee PARK, Jung-Eun PARK, Yeh Chan AHN
  • Publication number: 20170050043
    Abstract: The present invention relates to an optically diffusing fiber probe, a method for manufacturing the same, and an application thereof. More specifically, the present invention relates to an optically diffusing fiber probe capable of emitting light in a plurality of directions and a method for manufacturing the same, hybrid optical medical equipment for both diagnosis and treatment of tubular human tissue, a catheter-based laser treatment device, and an electromagnetic energy application device for tubular tissue stricture, comprising the optically diffusing fiber probe.
    Type: Application
    Filed: December 8, 2014
    Publication date: February 23, 2017
    Applicant: YUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: HYUN WOOK KANG, YEH CHAN AHN, KANG DAE LEE, HYOUNG SHIN LEE, MIN WOO AHN