Patents by Inventor Oui Sik Yoo
Oui Sik Yoo 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: 11779357Abstract: A detector for use in artificial joint replacement includes a rotation detection apparatus and a pressure detection apparatus and is inserted between implant trials to allow numerical verification for medial and lateral balance of forces and a rotation state of the trials.Type: GrantFiled: February 19, 2021Date of Patent: October 10, 2023Assignee: Corentec Co., Ltd.Inventors: Oui-Sik Yoo, Chan-Eol Kim
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Patent number: 11744599Abstract: A smart surgical instrument for artificial joint replacement includes a femur resection device, a tibia resection device, and a detector having a shape corresponding to the resected surfaces of a femur and a tibia. The femur resection device includes a laser device such that the femur resection device can be aligned for resection of the femur without drilling an intramedullary hole, thereby preventing complications attributable to the intramedullary hole. The tibia resection device includes a laser device, thereby enabling an easy and fast surgical operation without using an extramedullary aligner used for alignment of a tibia during resection of the tibia. The detector includes a rotation detection means and a pressure detection means and is inserted between trials to allow numerical verification for medial and lateral balance of forces and a rotation state of the trials. The surgical instrument enables a precise, accurate, easy, and fast surgical operation.Type: GrantFiled: February 19, 2021Date of Patent: September 5, 2023Assignee: Corentec Co., LTD.Inventors: Oui-Sik Yoo, Chan-Eol Kim
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Patent number: 11266509Abstract: The present disclosure relates to a knee joint augment having an anatomical shape. More specifically, the present disclosure relates to a knee joint augment that is used for artificial joint replacement to replace lost bone, wherein the augment is used in artificial knee replacement surgery to be coupled to a knee implant. The augment includes a top surface configured to be brought into contact with a distal surface of a base plate that forms the body of a tibia element and a bottom surface configured to be brought into contact with a cut surface of a tibia. The bottom surface has an area smaller than that of the top surface, and has a tapered shape that narrows from the top to the bottom.Type: GrantFiled: November 15, 2018Date of Patent: March 8, 2022Assignee: Corentec Co., Ltd.Inventors: Chan-Eol Kim, Sang-Gil Lee, Young-Woong Jang, Oui-Sik Yoo, Seok-Joo Kim
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Patent number: 11207198Abstract: A knee trial which is coupled to identify the mobility of an implant before the implant is implanted by total knee arthroplasty, and more particularly, a detachable knee trial which includes a plate trial, an insert trial, and an adapter for easy attachment and detachment of the two trials, wherein the adapter includes an elastic member on one side thereof to firmly couple the two trials by pressing the plate trial and the insert trial with opposite ends of the elastic member and to alleviate the burdens of an operator and a patient by allowing the adapter to be attached and detached even only with a simple operation of pressing the adapter and compressing the elastic member by a hand and promptly and precisely performing an operation of selecting an implant of a suitable size while applying various trials in the total knee arthroplasty process and shortening surgery time, alleviating the burdens of a surgeon and a patient, and wherein one side of the adapter is formed of plastic, making it possible to coupleType: GrantFiled: March 19, 2018Date of Patent: December 28, 2021Assignee: Corentec Co., Ltd.Inventors: Seung-Hun Oh, Chan-Eol Kim, Seok-Joo Kim, Oui-Sik Yoo
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Patent number: 11202714Abstract: A baseplate trial holding apparatus which holds a baseplate trial disposed in a proximal tibia during total knee arthroplasty or revision total knee arthroplasty, and includes a keel location setting part for setting an insertion location of a keel punch, and a knee joint implant surgical instrument set including the same.Type: GrantFiled: March 19, 2018Date of Patent: December 21, 2021Assignee: Corentec Co., Ltd.Inventors: Seung-Hun Oh, Chan-Eol Kim, Seok-Joo Kim, Oui-Sik Yoo
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Patent number: 11172944Abstract: A smart surgical instrument for artificial joint replacement includes a femur resection device, a tibia resection device, and a detector having a shape corresponding to the resected surfaces of a femur and a tibia. The femur resection device includes a laser device such that the femur resection device can be aligned for resection of the femur without drilling an intramedullary hole, thereby preventing complications attributable to the intramedullary hole. The tibia resection device includes a laser device, thereby enabling an easy and fast surgical operation without using an extramedullary aligner used for alignment of a tibia during resection of the tibia. The detector includes a rotation detection means and a pressure detection means and is inserted between trials to allow numerical verification for medial and lateral balance of forces and a rotation state of the trials. The surgical instrument enables a precise, accurate, easy, and fast surgical operation.Type: GrantFiled: November 20, 2017Date of Patent: November 16, 2021Assignee: Corentec Co., Ltd.Inventors: Oui-Sik Yoo, Chan-Eol Kim
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Publication number: 20210169508Abstract: A smart surgical instrument for artificial joint replacement includes a femur resection device, a tibia resection device, and a detector having a shape corresponding to the resected surfaces of a femur and a tibia. The femur resection device includes a laser device such that the femur resection device can be aligned for resection of the femur without drilling an intramedullary hole, thereby preventing complications attributable to the intramedullary hole. The tibia resection device includes a laser device, thereby enabling an easy and fast surgical operation without using an extramedullary aligner used for alignment of a tibia during resection of the tibia. The detector includes a rotation detection means and a pressure detection means and is inserted between trials to allow numerical verification for medial and lateral balance of forces and a rotation state of the trials. The surgical instrument enables a precise, accurate, easy, and fast surgical operation.Type: ApplicationFiled: February 19, 2021Publication date: June 10, 2021Inventors: Oui-Sik Yoo, Chan-Eol Kim
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Publication number: 20210169507Abstract: A detector for use in artificial joint replacement includes a rotation detection apparatus and a pressure detection apparatus and is inserted between implant trials to allow numerical verification for medial and lateral balance of forces and a rotation state of the trials.Type: ApplicationFiled: February 19, 2021Publication date: June 10, 2021Inventors: Oui-Sik Yoo, Chan-Eol Kim
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Patent number: 10959850Abstract: An implant having a porous layer and a molding method thereof includes: a substrate having a bone contact surface being in part in direct contact with a bone of a patient; a porous layer having a void inside; a connecting layer disposed between the bone contact surface and the porous layer to attach the bone contact surface to the porous layer; and a rib detachably coupled to the porous layer, wherein the connecting layer includes at least one constituent component identical to one of constituent components in the bone contact surface to be integrated into the porous layer and the bone contact surface, thereby firmly attaching the porous layer to the bone contact surface. Accordingly, bonding of dissimilar metals is facilitated by inducing the attachment of the bone contact surface of the implant to the porous layer having a void inside, formed by dissimilar metals, through the connecting layer including at least one constituent component identical to one of constituent components of the bone contact surface.Type: GrantFiled: May 25, 2017Date of Patent: March 30, 2021Assignee: Corentec Co., LTD.Inventors: Goon-Hee Lee, Oui-Sik Yoo, Young-Woong Jang
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Patent number: 10912574Abstract: The present invention relates to a coupler assembly for a tibial cutting guide, the assembly including an aligning coupler having a first side coupled to an aligning member by sliding and a second side slid in an adaptor groove of the tibial cutting guide, and a handle slidably coupled to the aligning coupler. More particularly, the present invention relates to a coupler assembly for a tibial cutting guide, the assembly enabling an aligner and a cutting guide to be easily coupled and decoupled through an adaptor without specific operation because when the handle is slid to the cutting guide, the handle is fixed to the cutting guide, and the cutting guide and the adaptor are locked, and when the handle is slid in the opposite direction from the cutting guide, the handle is separated from the cutting guide, and the cutting guide and the adaptor are unlocked.Type: GrantFiled: March 28, 2017Date of Patent: February 9, 2021Assignee: Corentec Co., Ltd.Inventors: Seok-Joo Kim, Oui-Sik Yoo, Chan-Eol Kim, Seung-Hun Oh
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Patent number: 10893946Abstract: The present invention relates to an asymmetric artificial knee joint that includes a bearing member having a medial sulcus and a lateral sulcus, and a femoral component having a medial condyle and a lateral condyle and disposed on the bearing member.Type: GrantFiled: June 2, 2016Date of Patent: January 19, 2021Assignee: Corentec Co., Ltd.Inventors: Doo-Hun Sun, Jung-Woo Seo, Oui-Sik Yoo
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Patent number: 10893942Abstract: The present invention relates to an implant playing a role as a joint in coupling a revision implant in revision total knee arthroplasty and, more specifically, to an offset adapter unit comprising an adapter which couples a femoral member or a tibial member to a stem member in revision total knee arthroplasty; and a nut coupled to the adapter, thereby improving the strength by considering fracture occurring in the narrowest area.Type: GrantFiled: November 24, 2015Date of Patent: January 19, 2021Assignee: Corentec Co., Ltd.Inventors: Doo-Hun Sun, Goon-Hee Lee, Oui-Sik Yoo, Jung-Woo Seo, Yeo-Kyung Kang
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Publication number: 20200281731Abstract: The present disclosure relates to a knee joint augment having an anatomical shape. More specifically, the present disclosure relates to a knee joint augment that is used for artificial joint replacement to replace lost bone, wherein the augment is used in artificial knee replacement surgery to be coupled to a knee implant. The augment includes a top surface configured to be brought into contact with a distal surface of a base plate that forms the body of a tibia element and a bottom surface configured to be brought into contact with a cut surface of a tibia. The bottom surface has an area smaller than that of the top surface, and has a tapered shape that narrows from the top to the bottom.Type: ApplicationFiled: November 15, 2018Publication date: September 10, 2020Inventors: Chan-Eol Kim, Sang-Gil Lee, Young-Woong Jang, Oui-Sik Yoo, Seok-Joo Kim
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Publication number: 20200085592Abstract: A baseplate trial holding apparatus which holds a baseplate trial disposed in a proximal tibia during total knee arthroplasty or revision total knee arthroplasty, and includes a keel location setting part for setting an insertion location of a keel punch, and a knee joint implant surgical instrument set including the same.Type: ApplicationFiled: March 19, 2018Publication date: March 19, 2020Applicant: Corentec Co., Ltd.Inventors: Seung-Hun Oh, Chan-Eol Kim, Seok-Joo Kim, Oui-Sik Yoo
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Publication number: 20200008959Abstract: A knee trial which is coupled to identify the mobility of an implant before the implant is implanted by total knee arthroplasty, and more particularly, a detachable knee trial which includes a plate trial, an insert trial, and an adapter for easy attachment and detachment of the two trials, wherein the adapter includes an elastic member on one side thereof to firmly couple the two trials by pressing the plate trial and the insert trial with opposite ends of the elastic member and to alleviate the burdens of an operator and a patient by allowing the adapter to be attached and detached even only with a simple operation of pressing the adapter and compressing the elastic member by a hand and promptly and precisely performing an operation of selecting an implant of a suitable size while applying various trials in the total knee arthroplasty process and shortening surgery time, alleviating the burdens of a surgeon and a patient, and wherein one side of the adapter is formed of plastic, making it possible to coupleType: ApplicationFiled: March 19, 2018Publication date: January 9, 2020Inventors: Seung-Hun Oh, Chan-Eol Kim, Seok-Joo Kim, Oui-Sik Yoo
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Patent number: 10470888Abstract: The present invention relates to an insert unit inserted during an artificial knee joint operation. An insert unit for an artificial knee joint according to an embodiment of the present invention includes a tibial member configured for coupling to the end of the tibia during an artificial knee joint operation, an insert configured for coupling to an upper side of the tibial member, and a locking rod coupling together the tibial member and the insert by penetrating through the tibial member and the insert, wherein the locking rod comprises a head portion formed at the upper end, and the head portion comprises a lip protruding outward to provide a constraint in relation to the insert during an articular movement such that the locking rod does not dig into the tibial member, to increase a coupling strength of the insert unit.Type: GrantFiled: January 27, 2016Date of Patent: November 12, 2019Assignee: Corentec Co., Ltd.Inventors: Doo-Hun Sun, Goon-Hee Lee, Oui-Sik Yoo, Jung-Woo Seo, Yeo-Kyung Kang
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Patent number: 10307259Abstract: An artificial knee joint, which includes an upper surface at which a post performs a motion relative to a cam of the thighbone coupling member, is configured such that a radius of curvature of an upper curved surface extending posteriorly from the upper surface is larger than that of a lower curved surface, so as to prevent the cam of the thighbone coupling member from deviating from an inflection point existing between the upper curved surface and the lower curved surface, and is configured such that the upper surface is inclined at a predetermined angle, so as to allow the thighbone coupling member to be restored while naturally descending along the upper surface even when the thighbone coupling member is dislocated, thereby increasing a jump distance without increasing an amount of bone to be cut.Type: GrantFiled: October 8, 2015Date of Patent: June 4, 2019Assignee: Corentec Co., Ltd.Inventors: Oui-Sik Yoo, Jung-Woo Seo, Jae-Won Kim, Goon-Hee Lee, Doo-Hum Sun, Yong-Sik Kim
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Patent number: 10285713Abstract: A guide device for knee replacement is configured such that during knee replacement surgery and/or knee replacement revision surgery for implanting a prosthetic knee implant, a degree of external rotation of a femur is identified and aligned through a cut surface of a proximal tibia, then a distance of a gap between the cut surface of the proximal tibia and a cut surface of a distal femur is identified during the surgery, so the degree of external rotation and the distance of the gap are identified simultaneously with one guide device, and thereby it is possible to facilitate the surgery, thereby reducing operation time and minimizing occurrence of a sequela of operation.Type: GrantFiled: November 8, 2016Date of Patent: May 14, 2019Assignee: CORENTEC CO., LTD.Inventors: Seung-Hun Oh, Seok-Ju Kim, Oui-Sik Yoo, Chan-Eol Kim
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Publication number: 20190059916Abstract: A smart surgical instrument for artificial joint replacement includes a femur resection device, a tibia resection device, and a detector having a shape corresponding to the resected surfaces of a femur and a tibia. The femur resection device includes a laser device such that the femur resection device can be aligned for resection of the femur without drilling an intramedullary hole, thereby preventing complications attributable to the intramedullary hole. The tibia resection device includes a laser device, thereby enabling an easy and fast surgical operation without using an extramedullary aligner used for alignment of a tibia during resection of the tibia. The detector includes a rotation detection means and a pressure detection means and is inserted between trials to allow numerical verification for medial and lateral balance of forces and a rotation state of the trials. The surgical instrument enables a precise, accurate, easy, and fast surgical operation.Type: ApplicationFiled: November 20, 2017Publication date: February 28, 2019Inventors: Oui-Sik Yoo, Chan-Eol Kim
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Publication number: 20190050540Abstract: A joint examination system includes an examination server transmitting request information for performing examination of a joint of a patient to a patient terminal, receiving execution information from the patient terminal in response to the request information, and storing and analyzing the execution information.Type: ApplicationFiled: November 20, 2017Publication date: February 14, 2019Inventors: Oui-Sik Yoo, Jae-Hun Ro