Patents by Inventor Eun-chang Choi
Eun-chang Choi 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).
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Patent number: 11065034Abstract: An automatic hair implanter is capable of continuously performing hair transplantation work by applying a structure of a conventional manual hair implanter. The automatic hair implanter (hair transplantation device) comprises a rotating magazine therein, and several needle modules are stored in the magazine. Two pushrods, which are positioned on a rear portion of the device and capable of translational motion, play a role of pushing a needle and a shaft, which constitute a needle module, forward. The needle and the shaft may be moved backward by a spring positioned inside the magazine.Type: GrantFiled: February 27, 2019Date of Patent: July 20, 2021Assignees: Electronics and Telecommunications Research Institute, Kyungpook National University Industry-Academic Cooperation FoundationInventors: Jung Wook Suh, Kyu Hyung Kim, Moon Kyu Kim, Jung Chul Kim, Tae Wuk Bae, Soo In Lee, Eun Chang Choi
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Patent number: 10881431Abstract: The present disclosure relates to a hair implanter with an automatically retracting needle, and more specifically, to a hair implanter with an automatically retracting needle configured to automatically move a needle backward by a force of a spring when the needle is moved forward to a predetermined position to allow hair transplantation work to be smoothly performed.Type: GrantFiled: August 20, 2018Date of Patent: January 5, 2021Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Kyungpook National University Industry-Academic Cooperation FoundationInventors: Jung Wook Suh, Kyu Hyung Kim, Moon Kyu Kim, Jung Chui Kim, Tae Wuk Bae, Eun Chang Choi
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Patent number: 10835390Abstract: The present invention relates to a method for manufacturing a bone graft material using 3D printing of a DLP system. The method includes (1) dispersing a powder material including calcium phosphate-based ceramics in a solvent; (2) recovering the calcium phosphate-based ceramics by removing the solvent from a solution in which the calcium phosphate-based ceramic material is dispersed in Step 1; (3) producing a photocurable resin composition by adding a binder resin including a crosslinking agent and a photoinitiator to the calcium phosphate-based ceramics obtained in Step 2; (4) performing 3D rapid prototyping on a bone graft material molded body from the composition for a bone graft material produced in Step 3 by 3D printing of a DLP system; and (5) debinding and sintering organic materials remaining in the bone graft material molded body subjected to prototyping in Step 4.Type: GrantFiled: December 11, 2018Date of Patent: November 17, 2020Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Korea Textile Machinery Convergence Research InstituteInventors: So Young Yang, Yong Il Chung, Kyu Hyung Kim, Min Ji Lee, Soo In Lee, Eun Chang Choi
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Patent number: 10695090Abstract: Disclosed is an automatic hair transplant apparatus including a needle module in which a hair follicle is inserted, a supplying case which has a magazine shape into which the needle module is inserted like a bullet of a gun, a withdrawing case which has a magazine shape into which the needle module is inserted like a bullet of a gun, and a hair transplanter on which the supplying case and the withdrawing case are mounted and which transplants hair follicles into a scalp by sequentially operating needle modules in the supplying case one by one and inserts needle modules from which hair follicles are removed into the withdrawing case.Type: GrantFiled: January 10, 2018Date of Patent: June 30, 2020Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Tae Wuk Bae, Yong Chul Jung, Moon Kyu Kim, Jung Chul Kim, Kyu Hyung Kim, Jung Wook Suh, Soo In Lee, Hyung Soo Lee, Eun Chang Choi
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Publication number: 20200155300Abstract: An automatic hair implant apparatus according to the present disclosure includes a cylinder including a nozzle at an exit side and having a supporting part partially opened on a path, an implant unit configured to pass through the nozzle to implant an embedded follicle into target skin, a cartridge disposed on the supporting part of the cylinder and configured to sequentially replace the implant unit, and a push rod configured to guide the implant unit to the nozzle and return to its original position when the follicle is implanted into the target skin.Type: ApplicationFiled: November 14, 2019Publication date: May 21, 2020Applicant: Electronics and Telecommunications Research InstituteInventors: Tae Wuk BAE, Kyu Hyung KIM, Jung Wook SUH, Eun Chang CHOI, Chang Hyuk HONG
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Patent number: 10582947Abstract: The present invention provides a follicle transfer and transplantation method based on FUE, which provides a follicle extraction punch for transferring and transplanting a follicular unit of a scalp and loads a follicular unit, extracted by the follicle extraction punch, to the follicle extraction punch itself or transfers the extracted follicular unit to a separate needle, thereby enabling a hair transplantation operation to be relatively quickly and accurately performed.Type: GrantFiled: July 11, 2017Date of Patent: March 10, 2020Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kyu Hyung Kim, Tae Wuk Bae, Jung Wook Suh, Soo In Lee, Eun Chang Choi
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Publication number: 20200000318Abstract: The present disclosure relates to a cable actuation mechanism configured to stably actuate a bending joint part located at an end of an endoscope, the cable actuation mechanism provided in the present disclosure has a hinge joint structure which may form a mechanically complete match with the bending joint part at the end including a plurality of rolling joints, and a plurality of pulleys are applied for smooth operation of a cable. The present disclosure also relates to an endoscope cable actuation mechanism configured to cause an occurrence of motion of one degree of freedom or two degrees of freedom or more according to a structure of the targeted bending joint part and applicable to a conventional manual-type endoscope and also to a driving part of a surgical robot.Type: ApplicationFiled: June 25, 2019Publication date: January 2, 2020Inventors: Jung Wook SUH, Soo In LEE, Eun Chang CHOI
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Patent number: 10441315Abstract: Provided is an apparatus for loading a follicular unit to a needle for hair implant including a first slitless needle in which the other end of a hollow body has a wedge shape, one end of the hollow body has a tubular shape to facilitate force transmission, and an end surface of the one end is blunt, so as to be used in a transplantation region in hair transplant procedure, and a first instrument configured to push the follicular unit to an interior of the first needle to load the follicular unit to the interior of the first needle.Type: GrantFiled: August 8, 2016Date of Patent: October 15, 2019Assignees: Electronics and Telecommunications Research Institute, Kyungpook National University Industry-Academic Cooperation FoundationInventors: Jung Wook Suh, Moon Kyu Kim, Jung Chul Kim, Yong Chul Jung, Eun Chang Choi
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Publication number: 20190262036Abstract: The present disclosure relates to a structure of an automatic hair implanter capable of continuously performing hair transplantation work by applying a structure of a conventional manual hair implanter. A proposed automatic hair implanter (hair transplantation device) comprises a rotating magazine therein, and several needle modules are stored in the magazine. Two pushrods, which are positioned on a rear portion of the device and capable of translational motion, play a role of pushing a needle and a shaft, which constitute a needle module, forward. The needle and the shaft may be moved backward by a spring positioned inside the magazine.Type: ApplicationFiled: February 27, 2019Publication date: August 29, 2019Applicants: Electronics and Telecommunications Research Institute, Kyungpook National University Industry-Academic Cooperation FoundationInventors: Jung Wook SUH, Kyu Hyung KIM, Moon Kyu KIM, Jung Chul KIM, Tae Wuk BAE, Soo In LEE, Eun Chang CHOI
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Publication number: 20190216616Abstract: The present invention relates to a method for manufacturing a bone graft material using 3D printing of a DLP system. The method includes (1) dispersing a powder material including calcium phosphate-based ceramics in a solvent; (2) recovering the calcium phosphate-based ceramics by removing the solvent from a solution in which the calcium phosphate-based ceramic material is dispersed in Step 1; (3) producing a photocurable resin composition by adding a binder resin including a crosslinking agent and a photoinitiator to the calcium phosphate-based ceramics obtained in Step 2; (4) performing 3D rapid prototyping on a bone graft material molded body from the composition for a bone graft material produced in Step 3 by 3D printing of a DLP system; and (5) debinding and sintering organic materials remaining in the bone graft material molded body subjected to prototyping in Step 4.Type: ApplicationFiled: December 11, 2018Publication date: July 18, 2019Inventors: So Young YANG, Yong Il CHUNG, Kyu Hyung KIM, Min Ji LEE, Soo In LEE, Eun Chang CHOI
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Patent number: 10251674Abstract: Provided is a manual follicle-transplanting hair transplanter for increasing a graft survival rate. The manual follicle-transplanting hair transplanter includes a needle member having a lower end containing a follicle to be transplanted and having a head having a larger diameter than a portion below the head at an upper end thereof, a rod member inserted into the needle member and having a push portion having a larger diameter than a portion below the push portion at an upper end thereof, an inner body configured to contain the needle member and limit downward movement of the needle member, and an outer body configured to contain the inner body and limit upward movement of the needle member. The needle member is automatically withdrawn when a compressed spring disposed in the inner body expands and pushes up a lower surface of the head.Type: GrantFiled: April 25, 2016Date of Patent: April 9, 2019Assignees: Electronics and Telecommunications Research Institute, Kyungpook National University Industry-Academic Cooperation FoundationInventors: Tae Wuk Bae, Yong Chul Jung, Kyu Hyung Kim, Moon Kyu Kim, Jung Chul Kim, Jung Wook Suh, Hyung Soo Lee, Eun Chang Choi, Dae Sik Kim, Chang Hyuk Hong
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Publication number: 20190053827Abstract: The present disclosure relates to a hair implanter with an automatically retracting needle, and more specifically, to a hair implanter with an automatically retracting needle configured to automatically move a needle backward by a force of a spring when the needle is moved forward to a predetermined position to allow hair transplantation work to be smoothly performed.Type: ApplicationFiled: August 20, 2018Publication date: February 21, 2019Inventors: Jung Wook SUH, Kyu Hyung KIM, Moon Kyu KIM, Jung Chul KIM, Tae Wuk BAE, Eun Chang CHOI
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Patent number: 10174279Abstract: An embodiment of the present invention provides an apparatus and method for expanding skin capable of expanding autologous skin to the maximum extent and performing a tissue culture of skin at the outside of the body. While an apparatus for expanding autologous skin of body's outside in general takes a form of expanding skin by applying a certain amount of constant force for a period of time regardless of the skin properties, the apparatus and method for expanding skin according to the embodiment of the present invention expands the skin to the maximum extent without rupturing the skin based on measurements of elasticity of the skin to find the maximum expanded area reachable just before rupturing of the skin.Type: GrantFiled: July 20, 2016Date of Patent: January 8, 2019Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Yun Jeong Song, Hwi Gang Kim, Jung Wook Suh, Eun Chang Choi, Chang Hyuk Hong, Dae Sik Kim, Hyung Soo Lee
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Publication number: 20180193058Abstract: Disclosed is an automatic hair transplant apparatus including a needle module in which a hair follicle is inserted, a supplying case which has a magazine shape into which the needle module is inserted like a bullet of a gun, a withdrawing case which has a magazine shape into which the needle module is inserted like a bullet of a gun, and a hair transplanter on which the supplying case and the withdrawing case are mounted and which transplants hair follicles into a scalp by sequentially operating needle modules in the supplying case one by one and inserts needle modules from which hair follicles are removed into the withdrawing case.Type: ApplicationFiled: January 10, 2018Publication date: July 12, 2018Inventors: Tae Wuk BAE, Yong Chul JUNG, Moon Kyu KIM, Jung Chul KIM, Kyu Hyung KIM, Jung Wook SUH, Soo In LEE, Hyung Soo LEE, Eun Chang CHOI
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Publication number: 20180193107Abstract: According to an aspect of the present invention, there is provided a balance arm apparatus for supporting heavy tools, including a base and a joint unit with one side coupled to the base and configured to be operated in upward, downward, leftward, and rightward directions, and the other side coupled to a gimbal capable of changing directions of a tool or device. According to an embodiment of the present invention, it is possible to support a weight of a high load apparatus for movement with six-degrees-of-freedom by connecting a balance arm having three-or-more-degrees-of-freedom and capable of supporting the apparatus while changing a position of the apparatus, and a gimbal structure having three-or-more-degrees-of-freedom or more to an end of the balance arm capable of switching a direction of the apparatus.Type: ApplicationFiled: January 12, 2018Publication date: July 12, 2018Inventors: Jung Wook SUH, Kyu Hyung KIM, Moon Kyu KIM, Jung Chul KIM, Tae Wuk BAE, Eun Chang CHOI
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Publication number: 20180193059Abstract: An automatic hair follicle transplant apparatus of the present invention includes a housing, a needle supply portion, a needle transfer portion, a hair follicle insertion portion, a needle transfer operation portion, and an operation portion.Type: ApplicationFiled: January 10, 2018Publication date: July 12, 2018Inventors: Tae Wuk BAE, Yong Chul JUNG, Kyu Hyung KIM, Moon Kyu KIM, Jung Chul KIM, Jung Wook SUH, Eun Chang CHOI, Soo In LEE, Hyung Soo LEE
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Publication number: 20180161056Abstract: The present invention provides a follicle transfer and transplantation method based on FUE, which provides a follicle extraction punch for transferring and transplanting a follicular unit of a scalp and loads a follicular unit, extracted by the follicle extraction punch, to the follicle extraction punch itself or transfers the extracted follicular unit to a separate needle, thereby enabling a hair transplantation operation to be relatively quickly and accurately performed.Type: ApplicationFiled: July 11, 2017Publication date: June 14, 2018Applicant: Electronics and Telecommunications Research InstituteInventors: Kyu Hyung KIM, Tae Wuk BAE, Jung Wook SUH, Soo In LEE, Eun Chang CHOI
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Publication number: 20180000987Abstract: A method of preparing a porous bone substitute is provided. The method includes preparing a ceramic paste including calcium phosphate-based ceramics, preparing a molded article formed of the ceramic paste based on a 3D rapid prototyping method, drying the molded article, and sintering the dried molded article.Type: ApplicationFiled: June 28, 2017Publication date: January 4, 2018Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: So Young YANG, Kyu Hyung KIM, Sang Beom LEE, Soo In LEE, Eun Chang CHOI
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Patent number: 9848909Abstract: Provided is an automatic hair transplanter for transplanting follicles including a housing having a space therein and having an aperture in a front surface, a cartridge installed behind the aperture and having a plurality of holes containing each of needle and rod assemblies, a cartridge driver configured to sequentially cause centers of the needle and rod assemblies to correspond to the center of the aperture by causing the cartridge to make a rectilinear motion or a rotary motion, a needle-and-rod assembly pressurizer configured to pressurize the back end of a needle and rod assembly whose center corresponds to the center of the aperture, and a manipulator having a switch for controlling operations of the cartridge mover and the needle-and-rod assembly pressurizer.Type: GrantFiled: May 24, 2016Date of Patent: December 26, 2017Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Tae Wuk Bae, Kyu Hyung Kim, Moon Kyu Kim, Jung Chul Kim, Jung Wook Suh, Soo In Lee, Hyung Soo Lee, Yong Chul Jung, Eun Chang Choi, Dae Sik Kim, Chang Hyuk Hong
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Publication number: 20170145371Abstract: An embodiment of the present invention provides an apparatus and method for expanding skin capable of expanding autologous skin to the maximum extent and performing a tissue culture of skin at the outside of the body. While an apparatus for expanding autologous skin of body's outside in general takes a form of expanding skin by applying a certain amount of constant force for a period of time regardless of the skin properties, the apparatus and method for expanding skin according to the embodiment of the present invention expands the skin to the maximum extent without rupturing the skin based on measurements of elasticity of the skin to find the maximum expanded area reachable just before rupturing of the skin.Type: ApplicationFiled: July 20, 2016Publication date: May 25, 2017Inventors: Yun Jeong SONG, Hwi Gang KIM, Jung Wook SUH, Eun Chang CHOI, Chang Hyuk HONG, Dae Sik KIM, Hyung Soo LEE