Patents by Inventor Dae-Kyung Sohn

Dae-Kyung Sohn 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: 20220031968
    Abstract: The present disclosure relates to a gas injection stabilization device and comprises: a fixed volume part having a first gas space with a fixed volume; at least one variable volume part which is in communication with the fixed volume part, and which has a volume that varies due to a gas introduced to and discharged from the fixed volume part, and which has a second gas space connected to the first gas space; a gas supply part which is connected to the fixed volume part and receives a supply of a gas from an external gas supply device; and a gas discharge part which is connected to the fixed volume part and discharges a gas to an external surgical space.
    Type: Application
    Filed: September 16, 2019
    Publication date: February 3, 2022
    Applicant: NATIONAL CANCER CENTER
    Inventors: Dae Kyung SOHN, Seong Chan PARK, Woo Sik EOM, Jae Hwan OH
  • Publication number: 20210369875
    Abstract: The present invention provides an alginic acid-based injectable hydrogel system for labeling an accurate position of a disease lesion and effectively delivering a drug to a target region. The formulation of the present invention can make it easy to locally inject a contrast agent and a drug into a target region while controlling the release rate of the contrast agent or the drug, with the formation of the hydrogel in the injected region. Through the advantages, the labeled position can be accurately determined from images, thereby enhancing the precision of surgical operation, with a minimal incision formed therefor. In addition, when used, the alginic acid-based injectable hydrogel system allows the effective local delivery of a drug to a target region while increasing the long-acting effect of the drug.
    Type: Application
    Filed: November 1, 2019
    Publication date: December 2, 2021
    Applicant: National Cancer Center
    Inventors: Yong Doo CHOI, Seon Sook LEE, Hyun Jin KIM, Dae Kyung SOHN, Seok Ki KIM, Young Woo KIM, Keun Won RYU, Hong Man YOON
  • Patent number: 10894095
    Abstract: The present disclosure concerns a medical image indicator. More particularly, it concerns the multipurpose medical image indicator including more than one of fluorophores and MRI contrast agent/CT contrast agent and method for manufacturing same. Responding to a demand for non-invasive and effective way of marking lesions, the present disclosure provides a method for manufacturing the multipurpose medical image indicator including a provision of rubber material fluid composition; a mixing of the rubber material fluid composition and fluorophores; and a transfiguring and drying of the mixture and the multipurpose medical image indicator manufactured according to the method. Further, the present disclosure provides a ligation device for endoscope including the multipurpose medical image indicator.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: January 19, 2021
    Assignee: NATIONAL CANCER CENTER
    Inventors: Dae Kyung Sohn, Yong Doo Choi, Kwang Gi Kim
  • Patent number: 10765804
    Abstract: The present invention relates to an injection device for endoscopy, and provides: a feature of inserting a needle for endoscopy into a tissue, in a state of holding a body tissue, which is a region to receive an injection, and then injecting an injection solution thereinto; and a feature enabling stanching of the bleeding region if bleeding occurs. That is, tissue is held by holding forceps and a needle is inserted thereinto, corresponding to a series of operations from a state in which the needle is accommodated between the holding forceps for holding the tissue, and then an injection solution is injected into the tissue through the needle. In addition, a bleeding region is stanched by the heat transferred to the holding forceps without using a separate hemostat if bleeding occurs during the operation.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: September 8, 2020
    Assignee: NATIONAL CANCER CENTER
    Inventors: Dae Kyung Sohn, Kwang Gi Kim, Na Ri Yang
  • Publication number: 20200171175
    Abstract: The present disclosure concerns a medical image indicator. More particularly, it concerns the multipurpose medical image indicator including more than one of fluorophores and MRI contrast agent/CT contrast agent and method for manufacturing same. Responding to a demand for non-invasive and effective way of marking lesions, the present disclosure provides a method for manufacturing the multipurpose medical image indicator including a provision of rubber material fluid composition; a mixing of the rubber material fluid composition and fluorophores; and a transfiguring and drying of the mixture and the multipurpose medical image indicator manufactured according to the method. Further, the present disclosure provides a ligation device for endoscope including the multipurpose medical image indicator.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 4, 2020
    Inventors: Dae Kyung SOHN, Yong Doo CHOI, Kwang Gi KIM
  • Patent number: 10548992
    Abstract: The present disclosure concerns a medical image indicator. More particularly, it concerns the multipurpose medical image indicator including more than one of fluorophores and MRI contrast agent/CT contrast agent and method for manufacturing same. Responding to a demand for non-invasive and effective way of marking lesions, the present disclosure provides a method for manufacturing the multipurpose medical image indicator including a provision of rubber material fluid composition; a mixing of the rubber material fluid composition and fluorophores; and a transfiguring and drying of the mixture and the multipurpose medical image indicator manufactured according to the method. Further, the present disclosure provides a ligation device for endoscope including the multipurpose medical image indicator.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: February 4, 2020
    Assignee: NATIONAL CANCER CENTER
    Inventors: Dae Kyung Sohn, Yong Doo Choi, Kwang Gi Kim
  • Publication number: 20170028086
    Abstract: The present disclosure concerns a medical image indicator. More particularly, it concerns the multipurpose medical image indicator including more than one of fluorophores and MRI contrast agent/CT contrast agent and method for manufacturing same. Responding to a demand for non-invasive and effective way of marking lesions, the present disclosure provides a method for manufacturing the multipurpose medical image indicator including a provision of rubber material fluid composition; a mixing of the rubber material fluid composition and fluorophores; and a transfiguring and drying of the mixture and the multipurpose medical image indicator manufactured according to the method. Further, the present disclosure provides a ligation device for endoscope including the multipurpose medical image indicator.
    Type: Application
    Filed: April 7, 2015
    Publication date: February 2, 2017
    Inventors: Dae Kyung SOHN, Yong Doo CHOI, Kwang Gi KIM
  • Publication number: 20160256624
    Abstract: The present invention relates to an injection device for endoscopy, and provides: a feature of inserting a needle for endoscopy into a tissue, in a state of holding a body tissue, which is a region to receive an injection, and then injecting an injection solution thereinto; and a feature enabling stanching of the bleeding region if bleeding occurs. That is, tissue is held by holding forceps and a needle is inserted thereinto, corresponding to a series of operations from a state in which the needle is accommodated between the holding forceps for holding the tissue, and then an injection solution is injected into the tissue through the needle. In addition, a bleeding region is stanched by the heat transferred to the holding forceps without using a separate hemostat if bleeding occurs during the operation.
    Type: Application
    Filed: October 13, 2014
    Publication date: September 8, 2016
    Inventors: Dae Kyung SOHN, Kwang Gi KIM, Na Ri YANG
  • Patent number: 8688195
    Abstract: Provided is a fluorescent indication clip for surgery that has an improved function as a position indicator due to a photo-reactive fluorescent material included in the bio-clip, and allows people to rapidly and easily detect the accurate position of an internal operation region, and thus can improve operation accuracy and reduce side effects caused by excessive incision. The fluorescent indication clip includes a self-spreadable clip body, a fluorescent indicator prepared at the rear end of the clip body and including a photo-reactive fluorescent material, and a clamper configured to slide from a position at which the clamper is mounted on the fluorescent indicator to the clip body by an external force, and fasten the clip body to narrow front ends of the clip body.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: April 1, 2014
    Assignee: National Cancer Center
    Inventors: Dae-Kyung Sohn, Kwang-Gi Kim, Yong-Doo Choi, Kyoung-Won Nam, Hyun-Ho Kim
  • Patent number: 8475362
    Abstract: Provided is a surgical apparatus for transanal endoscopic microsurgery (TEM) in which a thin and long endoscope and surgical instruments are inserted through a natural orifice of a human body and the endoscope and surgical instruments are conveyed to the operation area in the body to perform the operation area in the body. According to the surgical apparatus for TEM, a rotation function is added to a barrel of the surgical apparatus for TEM to enable manual rotation of the barrel to a required extent and adjustment of an operation area, without separation of the surgical apparatus for TEM from a fixing frame during an operation. In addition, since the endoscope is disposed outside the barrel, it is possible to reduce the outer diameter of the barrel and uniformly maintain a visual direction of the endoscope even when the barrel is rotated. Further, since the rotation function is added to both the barrel and the surgical instrument insertion hole, more convenient operation is possible.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: July 2, 2013
    Assignee: National Cancer Center
    Inventors: Dae-Kyung Sohn, Dae-Hyun Kim, Kwang-Gi Kim, Kyoung-Won Nam, Hyung-Tae Kim
  • Publication number: 20100331674
    Abstract: Provided is a fluorescent indication clip for surgery that has an improved function as a position indicator due to a photo-reactive fluorescent material included in the bio-clip, and allows people to rapidly and easily detect the accurate position of an internal operation region, and thus can improve operation accuracy and reduce side effects caused by excessive incision. The fluorescent indication clip includes a self-spreadable clip body, a fluorescent indicator prepared at the rear end of the clip body and including a photo-reactive fluorescent material, and a clamper configured to slide from a position at which the clamper is mounted on the fluorescent indicator to the clip body by an external force, and fasten the clip body to narrow front ends of the clip body.
    Type: Application
    Filed: November 4, 2009
    Publication date: December 30, 2010
    Inventors: Dae-Kyung Sohn, Kwang-Gi Kim, Yong-Doo Choi, Kyoung-Won Nam, Hyun-Ho Kim
  • Publication number: 20100331620
    Abstract: Provided is a surgical apparatus for transanal endoscopic microsurgery (TEM) in which a thin and long endoscope and surgical instruments are inserted through a natural orifice of a human body and the endoscope and surgical instruments are conveyed to the operation area in the body to perform the operation area in the body. According to the surgical apparatus for TEM, a rotation function is added to a barrel of the surgical apparatus for TEM to enable manual rotation of the barrel to a required extent and adjustment of an operation area, without separation of the surgical apparatus for TEM from a fixing frame during an operation. In addition, since the endoscope is disposed outside the barrel, it is possible to reduce the outer diameter of the barrel and uniformly maintain a visual direction of the endoscope even when the barrel is rotated. Further, since the rotation function is added to both the barrel and the surgical instrument insertion hole, more convenient operation is possible.
    Type: Application
    Filed: March 16, 2010
    Publication date: December 30, 2010
    Inventors: Dae-Kyung Sohn, Dae-Hyun Kim, Kwang-Gi Kim, Kyoung-Won Nam, Hyung-Tae Kim