Corentec Co., Ltd.

Oui-Sik Yoo

Chan-Eol Kim

Jung-Woo Seo

Seok-Joo Kim

Seung-Hun Oh

Goon-Hee Lee

Doo-Hun Sun

Jae-Won Kim

Young-Woong Jang

Yeo-Kyung Kang

Yong-Sik Kim

Sang-Gil Lee

Doo-Hum Sun

Seok-Ju Kim

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.

Detector for artificial joint replacement

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.

Smart surgical instruments for artificial joint replacement

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. An intermediate line at which one end surface cut to be perpendicular to the top surface and an outer surface meet each other has a shape that is outwardly convex to the outside of the augment with respect to a straight line connecting a top point where the intermediate line and the top surface meet and a bottom point where the intermediate line meets the bottom surface, whereby the intermediate line has a shape corresponding to the anatomical shape of a cut bone.

Anatomically shaped knee joint augment

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 couple the plate trial and the plate implant without leaving a flaw and the like in the plate trial and the plate implant.

Detachable knee trial

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.

Baseplate trial holding apparatus and knee joint implant surgical instrument set including the same

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.

Implant having porous layer and molding method thereof

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.

Coupler assembly for tibial cutting guide

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.

Asymmetric artificial knee joint

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.

Offset adapter unit

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.

Insert unit for artificial knee joint

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.

Artificial knee joint capable of preventing dislocation of thighbone coupling member

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.

Guide device for knee replacement

A method of manufacturing a patient-customized tibial element for use in artificial knee joint surgery. A tibial element data table regarding sizes of proximal tibial prostheses is formed. Standard molds able to cover the tibial element data table are manufactured. A standard mold is selected from the standard molds in order to manufacture a patient-customized proximal tibial prosthesis. A proximal tibial prosthesis fitting a patient is formed using the selected standard mold.

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Seoul, South Korea

Oui-Sik Yoo