JP2014030719A - Cervical vertebra fixing device having self-tension part - Google Patents
Cervical vertebra fixing device having self-tension part Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
- A61B17/8042—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers the additional component being a cover over the screw head
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7059—Cortical plates
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
- A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
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Abstract
Description
本発明は、整形外科又は脳神経外科で脛椎前方固定術を施術する場合に使用される脛椎固定装置に関するもので、より詳細には、プレートに形成された少なくとも一つ以上の挿入孔にネジが挿入され、前記挿入孔とプレートの中心間にプレートを貫通して形成された拡張溝と、前記拡張溝の内部に形成され、前記ガイドをプレートの中心方向に押す力を付与するテンション部と、前記挿入孔と前記拡張溝の境界に形成され、段差面を両側に形成したチャンネル溝と、前記チャンネル溝に結合され、チャンネル溝上で左右に回動し、前記テンション部の押す力によって前後に回動して前記挿入孔に内接するネジをロックするガイドとを含んで構成されていることを特徴とする自己テンション部を有する頸椎固定装置に関する。 The present invention relates to a tibial fixation device used when performing an anterior tibial fixation in orthopedic surgery or neurosurgery, and more particularly to at least one insertion hole formed in a plate with a screw. And an extension groove formed through the plate between the insertion hole and the center of the plate, and a tension part that is formed inside the extension groove and applies a force to push the guide toward the center of the plate; A channel groove formed on the boundary between the insertion hole and the extension groove, having stepped surfaces on both sides, coupled to the channel groove, rotated left and right on the channel groove, and back and forth by the pressing force of the tension portion The present invention relates to a cervical spinal fixation device having a self-tensioning portion, characterized by including a guide that rotates and locks a screw that is inscribed in the insertion hole.
一般的に、整形外科又は脳神経外科で脛椎椎間板疾患（ｃｅｒｖｉｃａｌ ｄｉｓｃ ｄｉｓｅａｓｅ）、脛椎ディスク、脛椎性脊髄症、脛椎骨折等の治療時に、脛椎をなすそれぞれの椎体を動きがないように固定しなくてはならないが、このために板状のプレート（ｐｌａｔｅ）とプレートを脛椎に固定するネジ（ｓｃｒｅｗ）からなる頸椎固定装置が使用される。 In general, during the treatment of tibial disc disease, tibial disc, tibial myelopathy, tibial fracture, etc. during orthopedic or neurosurgery, the vertebral bodies that make up the tibia are not moving For this purpose, a cervical spine fixing device comprising a plate-like plate and a screw for fixing the plate to the tibia is used.
前記脛椎固定装置の施術を簡単に説明すると、患者の首部分の前方部位で患部を切開し、脛椎を露出させた後、患部の脛椎ディスク（ｄｉｓｃ）を除去し、ケージ（ｃａｇｅ）等の施術物をディスクが除去された椎体間に施術してから、ケージが挿入された部分の上の椎体と下の椎体にプレートを位置させ、これをネジで固定する方法で頸椎固定装置の施術がなされる。 Briefly describing the operation of the tibial fixation device, the affected part is incised at the front part of the patient's neck, the tibia is exposed, the tibial disc (disc) is removed, and the cage is removed. Cervical vertebrae by applying a surgical procedure between the vertebral body from which the disc has been removed, and then positioning the plate on the vertebral body above and below the vertebral body where the cage has been inserted, and fixing it with screws. The fixing device is treated.
このように施術された頸椎固定装置は、ネジの固定力とプレートの支持力によって椎体の間に挿入されたケージを動かないように固定するようになる。 The cervical spine fixing device thus operated comes to fix the cage inserted between the vertebral bodies so as not to move by the fixing force of the screw and the supporting force of the plate.
しかし、施術後の患者の活動等によって椎体に固定されたネジが緩まり、プレートから後退する現象が発生することがあり、これはケージの振動を引き起こして患者の回復を阻害する要素として作用するようになる。 However, there may be a phenomenon in which the screw fixed to the vertebral body is loosened due to the activity of the patient after the operation, etc., and the phenomenon of retracting from the plate may occur, which acts as an element that inhibits patient recovery by causing vibration of the cage It becomes like this.
そのため、頸椎固定装置のネジが緩んで後退する現象を防ぐために、従来、大韓民国特許公開第１０−２００９−８６３８７号の頸部板システム（公知技術１）及び大韓民国特許公開第１０−２００５−１１１６７号の頸椎固定装置（公知技術２）の技術が開示されている。
前記の公知技術１は、脛椎板システムのプレート上にネジの穴の内部に挿入可能に設置される回転要素を備えた構成であり、前記公知技術２は、プレート状に形成された固定ネジ挿入口の間に固定ネジの頭部分に掛かる頭部固定部材を設置した構成である。
Therefore, in order to prevent the cervical spine fixation device from loosening and retreating, the cervical plate system (known art 1) of Korean Patent Publication No. 10-2009-86387 and Korean Patent Publication No. 10-2005-11167 have been conventionally used. The technique of the cervical spine fixation device (known technique 2) is disclosed.
The known technique 1 includes a rotating element that is installed on a plate of a tibial disc system so as to be inserted into a screw hole, and the known technique 2 includes a fixing screw formed in a plate shape. It is the structure which installed the head fixing member hanging on the head part of a fixing screw between the insertion openings.
しかし、前記の公知技術１及び２のネジの後退を防止するための構成要素である回転要素（公知技術１）及び頭部固定部材（公知技術２）が必須的に使用されるため、それだけ部品の個数が増加するのはもちろん、その構造と作動が複雑になる短所があり、さらに脛椎固定装置の製造費用が増加するだけでなく、装置が誤作動する可能性も排除できないという点が懸念される。 However, since the rotating element (known technique 1) and the head fixing member (known technique 2), which are constituent elements for preventing the screws of the known techniques 1 and 2 from being retracted, are essentially used, the parts are accordingly increased. In addition to the increase in the number of devices, there are disadvantages in that the structure and operation are complicated, and not only the manufacturing cost of the tibial fixation device increases, but also the possibility that the device malfunctions cannot be excluded. Is done.
本発明は、上述のような従来の諸般の問題点を解消しようと創案されたものであり、頸椎固定装置の施術時にプレートに多様な角度で挿入される固定ネジを強固に固定してネジの後退を防止することができ、さらに脛椎固定装置の施術を容易に行うことができる頸椎固定装置の構成を提供することに本発明の技術的課題がある。 The present invention was devised to solve the conventional problems as described above, and firmly fix the fixing screws inserted into the plate at various angles during the operation of the cervical spine fixing device. There is a technical problem of the present invention in providing a configuration of a cervical spinal fixation device that can prevent retraction and can easily perform a tibial fixation device.
前記のような技術的課題を達成するための本発明の頸椎固定装置は、プレートに形成された少なくとも一つ以上の挿入孔にネジが挿入され、前記挿入孔とプレートの中心間にプレートを貫通して形成された拡張溝と、前記拡張溝の内部に形成され、前記ガイドをプレートの中心方向に押す力を付与するテンション部と、前記挿入孔と前記拡張溝の境界に形成され、段差面を両側に形成したチャンネル溝と、前記チャンネル溝に結合され、チャンネル溝上で左右に回動し、前記テンション部の押す力によって前後に回動して前記挿入孔に内接するネジをロックするガイドとを含んで構成されることを特徴とする。 In order to achieve the above technical problem, the cervical spine fixation device of the present invention has a screw inserted into at least one insertion hole formed in the plate, and penetrates the plate between the insertion hole and the center of the plate. An extension groove formed in the extension groove, a tension portion for applying a force to push the guide toward the center of the plate, a step surface formed at a boundary between the insertion hole and the extension groove A channel groove formed on both sides, a guide coupled to the channel groove, pivoted left and right on the channel groove, and pivoted back and forth by the pressing force of the tension portion to lock a screw inscribed in the insertion hole; It is characterized by including.
前記のような構成を有する本発明の頸椎固定装置は、ネジ挿入口の内部で一定の角度で回動するガイドが、多様な角度で挿入されるネジのヘッド部分に沿って密着固定されることにより、ネジの進入角度に関係なく、ネジを強固に固定させることができる効果がある。
また、施術者が固定ネジの進入角度を気にしなくてすむため、頸椎固定装置の施術がより簡単かつ容易になされることができるという長所を得ており、これらの利点によって施術時間の短縮をもたらすことができる進歩した発明である。
In the cervical spine fixation device of the present invention having the above-described configuration, the guide that rotates at a constant angle inside the screw insertion opening is closely fixed along the head portion of the screw inserted at various angles. Thus, there is an effect that the screw can be firmly fixed regardless of the screw entry angle.
In addition, since the practitioner does not have to worry about the angle of entry of the fixing screw, the cervical spine fixing device can be operated more easily and easily, and these advantages reduce the operation time. It is an advanced invention that can be brought about.
以下、図面を参照して本発明の自己テンション部を有する頸椎固定装置の構成を詳細に説明する。ただし、開示された図面は、当業者に本発明の思想が十分に伝達されるようにするための例として提供されるものである。したがって、本発明は、以下提示される図面に限定されず、他の態様で具体化されることもできる。また、本発明の明細書で使用される用語において、他の定義がない場合は、本発明が属する技術分野で通常の知識を有する者が一般的に理解している意味を有し、下記の説明及び添付図面で本発明の要旨を不必要に不明確にし得る公知機能及び構成についての詳細な説明は省略する。 Hereinafter, the configuration of a cervical spinal fixation device having a self-tensioning portion of the present invention will be described in detail with reference to the drawings. However, the disclosed drawings are provided as examples for sufficiently transmitting the concept of the present invention to those skilled in the art. Therefore, the present invention is not limited to the drawings presented below, and may be embodied in other modes. In addition, in terms used in the specification of the present invention, unless otherwise defined, it has a meaning generally understood by a person having ordinary knowledge in the technical field to which the present invention belongs, and is described below. Detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention are omitted in the description and accompanying drawings.
図１は本発明の第１実施例の頸椎固定装置の斜視図、図２は本発明の第１実施例の頸椎固定装置の平面図、図３は本発明の第１実施例の頸椎固定装置の分解斜視図である。 1 is a perspective view of a cervical spine fixation device according to a first embodiment of the present invention, FIG. 2 is a plan view of the cervical spinal fixation device according to the first embodiment of the present invention, and FIG. 3 is a cervical spine fixation device according to the first embodiment of the present invention. FIG.
図面を参照すると、本発明の第１実施例の頸椎固定装置１は、平板状のプレート１０を備える。 Referring to the drawings, a cervical spinal fixation device 1 according to a first embodiment of the present invention includes a flat plate 10.
前記プレート１０の材質は、好ましくはチタン（Ｔｉｔａｎｉｕｍ）等の剛性の金属素材である。 The material of the plate 10 is preferably a rigid metal material such as titanium (Titanium).
前記プレート１０の形状は四角形であり、各角部分は曲面からなっている。そして、前記プレート１０のそれぞれの角の内側にプレート１０を脛椎に固定するネジ１００が挿入される少なくとも一つ以上の挿入孔２０がプレート１０を貫通して穿孔されている。 The shape of the plate 10 is a quadrangle, and each corner portion is a curved surface. At least one insertion hole 20 into which a screw 100 for fixing the plate 10 to the tibia is inserted is drilled through the plate 10 inside each corner of the plate 10.
図面の第１実施例は、前記挿入孔２０が４つ形成されたものとして示されているが、脛椎固定施術の固定レベル（ｌｅｖｅｌ）に応じて挿入孔を２つ、６つ、８つ、またはそれ以上の個数で形成することができる。 Although the first embodiment of the drawing is shown as having four insertion holes 20, there are two, six, and eight insertion holes depending on the level of fixation of the tibial fixation. Or more than that.
そして、前記挿入孔２０の内壁２１は、後述するネジ１００のヘッド１０１部分の形状に噛合される曲面をなしている。 And the inner wall 21 of the said insertion hole 20 has comprised the curved surface meshed | engaged with the shape of the head 101 part of the screw 100 mentioned later.
また、前記挿入孔２０とプレート１０の中心間にプレート１０を貫通して形成された拡張溝５０を有し、前記挿入孔２０と拡張溝５０の境界には、プレート１０の表面から所定の高さの段差面２３を両側に形成したチャンネル溝２２が形成される。 An extension groove 50 is formed between the insertion hole 20 and the center of the plate 10 so as to penetrate the plate 10. The boundary between the insertion hole 20 and the extension groove 50 has a predetermined height from the surface of the plate 10. A channel groove 22 having a step surface 23 on both sides is formed.
前記チャンネル溝２２には、後述するガイド３０が内接し、内接したガイド３０がネジ１００の進入方向を追従しながらチャンネル溝２２で左右方向に回動することができる。 A guide 30 (described later) is inscribed in the channel groove 22, and the inscribed guide 30 can rotate in the left-right direction in the channel groove 22 while following the entry direction of the screw 100.
前記ガイド３０は、略コの字状からなった部材であり、具体的には、水平方向に延長された平板状の上部顎３１と下部顎３２が垂直方向に延長された連結面３３と結合されて一体になった形状である。 The guide 30 is a substantially U-shaped member, specifically, a flat plate-like upper jaw 31 and a lower jaw 32 that extend in the horizontal direction are coupled to a connection surface 33 that extends in the vertical direction. It is an integrated shape.
前記のようなガイド３０は、プレート１０に形成されたチャンネル溝２２が上部顎３１の底面３１ａと下部顎３２の上面３２ａの間に内接されることにより相互結合される。
すると、このように結合された状態のガイド３０の上部顎３１は、前記チャンネル溝２２の上面を通過して挿入孔２０の中心方向に突出し、突出した上部顎３１の底面３１ａが挿入孔２０に進入するネジ１００のヘッド１０１部分の上面と接触してネジ１００をロック（ｌｏｃｋｉｎｇ）し、ネジ１００が後退しないようにする掛り作用を付与する。
The guide 30 as described above is coupled to each other by the channel groove 22 formed in the plate 10 being inscribed between the bottom surface 31 a of the upper jaw 31 and the upper surface 32 a of the lower jaw 32.
Then, the upper jaw 31 of the guide 30 in such a coupled state passes through the upper surface of the channel groove 22 and protrudes toward the center of the insertion hole 20, and the bottom surface 31 a of the protruded upper jaw 31 becomes the insertion hole 20. The screw 100 is locked by coming into contact with the upper surface of the head 101 portion of the entering screw 100, and a hanging action is applied so that the screw 100 does not move backward.
このように結合されたガイド３０は、図４に示すように、前記上部顎４１と下部顎４２が、前記チャンネル溝２２の両側の段差面２３に引っ掛かるまで左右方向に回動が可能である。 As shown in FIG. 4, the guide 30 coupled in this way can be rotated in the left-right direction until the upper jaw 41 and the lower jaw 42 are caught by the step surfaces 23 on both sides of the channel groove 22.
また、前記ガイド３０をプレート１０の中心方向に押すテンション部４０が前記拡張溝５０の内部に形成される。 Further, a tension portion 40 that pushes the guide 30 toward the center of the plate 10 is formed inside the expansion groove 50.
前記テンション部４０は、図２及び図３に示すように、拡張溝２０の縁の一側からプレート１０の中心方向に延長されて形成されるベース４１と、前記ベース４１の末端で前記ガイド３０に向かって曲がった（ｂｅｎｄｉｎｇ）第１折曲部４２と、前記第１折曲部４２の末端で前記ガイド３０の連結面３３と平行に曲がった第２折曲部４３からなっており、前記第２折曲部４３とガイド３０の連結面３３との接触面はアーム４５（ａｒｍ）をなす。 As shown in FIGS. 2 and 3, the tension part 40 includes a base 41 formed to extend from one side of the edge of the expansion groove 20 toward the center of the plate 10, and the guide 30 at the end of the base 41. A first bent portion 42 that is bent toward the first bent portion 42 and a second bent portion 43 that is bent at the end of the first bent portion 42 in parallel with the connecting surface 33 of the guide 30. A contact surface between the second bent portion 43 and the connecting surface 33 of the guide 30 forms an arm 45 (arm).
この際、前記テンション部４０のベース４１の末端からまた他の挿入孔２０のためにもう一つのテンション部４０が形成されることができるが、前記もう一つのテンションが形成され始める地点は分岐部４４をなすようになる。 At this time, another tension part 40 may be formed from the end of the base 41 of the tension part 40 for the other insertion hole 20, but the point where the other tension starts to be formed is a branch part. 44 is made.
前記テンション部４０のアーム４５は、第１折曲部４２と第２折曲部４３のベンディング形状による弾性が作用することにより、アーム４５と接触するガイド３０を押す力を持つ自己テンション（ｓｅｌｆ−ｔｅｎｓｉｏｎ）力を持つようになる。 The arm 45 of the tension part 40 has a self-tension (self−) having a force to push the guide 30 in contact with the arm 45 due to the elasticity of the bending parts of the first bent part 42 and the second bent part 43. (tension) has power.
したがって、図５に示すように、前記ガイド３０がアーム４５のテンション力によってプレート１０の中心方向の後方に押されたり、挿入孔２０の中心方向に復帰する作動を行うことができる。 Therefore, as shown in FIG. 5, the guide 30 can be pushed rearward in the central direction of the plate 10 by the tension force of the arm 45 or can be returned to the central direction of the insertion hole 20.
以下、前記のように構成された本発明の第１実施例の自己テンション部を有する頸椎固定装置の作動を詳細に説明する。図６及び図７は、本発明の第１実施例の頸椎固定装置の作動状態図である。 Hereinafter, the operation of the cervical spinal fixation device having the self-tensioning portion of the first embodiment of the present invention configured as described above will be described in detail. 6 and 7 are operational state diagrams of the cervical spine fixing device according to the first embodiment of the present invention.
まず、図６の左図に示すように、本発明の第１実施例の頸椎固定装置のプレート１０を固定し、上部のヘッド１０１部分と下部のネジ本体１０２からなるネジ１００がプレート１０の挿入孔２０に進入する。 First, as shown in the left diagram of FIG. 6, the plate 10 of the cervical spine fixing device according to the first embodiment of the present invention is fixed, and the screw 100 including the upper head 101 portion and the lower screw body 102 is inserted into the plate 10. Enter hole 20.
すると、下方に進入するネジ１００のヘッド１０１部分とガイド３０が接触し、テンション部４０のアーム４５によって弾性力が付与された状態のガイド３０が進入するヘッド１０１の側面１０１ａによってプレート１０の中心方向である後方に押されるようになる。この状態は、まだネジ１００によってプレートが固定されていない「アンロック（Ｕｎｌｏｃｋ）」状態である。 Then, the head 101 portion of the screw 100 entering downward and the guide 30 come into contact with each other, and the guide 30 in a state where the elastic force is applied by the arm 45 of the tension portion 40 enters the central direction of the plate 10 by the side surface 101a of the head 101 entering. Will be pushed backwards. This state is an “Unlock” state in which the plate is not yet fixed by the screw 100.
しかし、前記のネジ１００が挿入孔２０にさらに進入するようになると、前記ヘッド１０１が上部顎３１の傾斜面に沿って下降して上部顎３１と下部顎３２の間の空間に凹入され、この時、ネジ１００のヘッド１０１とガイド３０との接触が解除され、後方に押された状態のアーム４５のテンション力によって前方に突出しながらガイド３０を挿入孔２０の中央方向に押すようになる。 However, when the screw 100 further enters the insertion hole 20, the head 101 descends along the inclined surface of the upper jaw 31 and is recessed into the space between the upper jaw 31 and the lower jaw 32, At this time, the contact between the head 101 of the screw 100 and the guide 30 is released, and the guide 30 is pushed toward the center of the insertion hole 20 while protruding forward by the tension force of the arm 45 in a state of being pushed backward.
すると、図６の右図に示すように、チャンネル２２の上面を通過して挿入孔２０の中心方向に突出する上部顎３１の底面３１ａがネジ１００のヘッド１０１部分の上面に接触し、ネジ１００のヘッド１０１の上面が上部顎３１の底面３１ａによって引っ掛かり、ネジ１００を「ロック（ｌｏｃｋｉｎｇ）」状態にする。 Then, as shown in the right diagram of FIG. 6, the bottom surface 31 a of the upper jaw 31 that passes through the upper surface of the channel 22 and protrudes toward the center of the insertion hole 20 comes into contact with the upper surface of the head 101 portion of the screw 100. The top surface of the head 101 is hooked by the bottom surface 31a of the upper jaw 31 to place the screw 100 in the “locking” state.
このようなネジ１００のロック状態では、ネジ１００のヘッド１０１がガイド３０の上部顎３１によって引っ掛かるようになるため、脛椎固定装置のネジ後退現象を防止することになる。 In such a locked state of the screw 100, the head 101 of the screw 100 is hooked by the upper jaw 31 of the guide 30, so that the screw retraction phenomenon of the tibial fixation device is prevented.
図７は、このようにロックされた状態の本発明の第１実施例の頸椎固定装置の部分断面を図示したもので、挿入孔２０の内壁２１を一部切開した状態の断面図である。 FIG. 7 illustrates a partial cross section of the cervical spine fixation device according to the first embodiment of the present invention in a locked state as described above, and is a cross-sectional view of a state in which the inner wall 21 of the insertion hole 20 is partially cut.
図７の左側に示すように、本発明の頸椎固定装置は、ネジ１００がプレート１０に垂直方向に進入してロックすることができるのは勿論のこと、さらには、本発明の脛椎固定装置は、図７の右側の図面に示されるように、ネジ１００がプレート１０に垂直方向ではない所定の偏差角（α）を持って進入した場合、進入するネジ１００のヘッド１０１部分の偏差角度（α）に応じて、ガイド３０がその結合されたチャンネル溝２２の上で左方向または右方向に回動し、回動したガイド３０の上部顎３１にネジ１００のヘッド１０１が引っ掛かるようになる。 As shown on the left side of FIG. 7, the cervical spine fixation device of the present invention can be locked by allowing the screw 100 to enter the plate 10 in the vertical direction and lock. As shown in the drawing on the right side of FIG. 7, when the screw 100 enters the plate 10 with a predetermined deviation angle (α) that is not perpendicular, the deviation angle of the head 101 portion of the entering screw 100 ( In response to α), the guide 30 is rotated leftward or rightward on the coupled channel groove 22, and the head 101 of the screw 100 is caught on the upper jaw 31 of the rotated guide 30.
したがって、前述した従来の多様な角度で挿入されるネジが引き起こし得る頸椎固定ネジの施術上の問題点を一挙に解消することができるようになるだけでなく、施術者が固定ネジの進入角度に注意しなくても頸椎固定装置のネジ固定を容易に行うことができるという長所を得ることになる。 Therefore, not only can the problems of cervical spine fixation screws, which can be caused by screws inserted at various angles as described above, be solved all at once, but the practitioner can adjust the entry angle of the fixation screw. The advantage is that the screw fixing of the cervical spine fixing device can be easily performed without care.
次に、本発明の第２実施例の頸椎固定装置の構成と作動を説明する。本発明の第２実施例の頸椎固定装置２は、第１の実施例と対比してガイド３０とテンション部４０の構成が変形されたものであり、以下、図８ないし図１１を参照してその構成と動作を詳細に説明する。 Next, the configuration and operation of the cervical spine fixation device according to the second embodiment of the present invention will be described. The cervical spine fixation device 2 according to the second embodiment of the present invention is obtained by modifying the configuration of the guide 30 and the tension portion 40 as compared with the first embodiment, and will be described below with reference to FIGS. 8 to 11. The configuration and operation will be described in detail.
図８は本発明の第２実施例の頸椎固定装置の斜視図、図９は本発明の第２実施例の頸椎固定装置の平面図、図１０は本発明の第２実施例の頸椎固定装置の底面図、図１１は図９のＡ−Ａ’線断面図、図１２は、本発明の第２実施例の頸椎固定装置の分解斜視図である。 8 is a perspective view of a cervical spine fixation device according to a second embodiment of the present invention, FIG. 9 is a plan view of the cervical spine fixation device according to the second embodiment of the present invention, and FIG. 10 is a cervical spine fixation device according to the second embodiment of the present invention. FIG. 11 is a cross-sectional view taken along line AA ′ of FIG. 9, and FIG. 12 is an exploded perspective view of the cervical spine fixing device according to the second embodiment of the present invention.
図８ないし図１０を参照すると、本発明の第２実施例の頸椎固定装置２は、平板状のプレート１１０を備え、前記プレート１１０の材質は、前述した第１実施例と同様に好ましくはチタン（Ｔｉｔａｎｉｕｍ）等の剛性の金属素材である。 Referring to FIGS. 8 to 10, the cervical spinal fixation device 2 according to the second embodiment of the present invention includes a flat plate 110, and the material of the plate 110 is preferably titanium as in the first embodiment. It is a rigid metal material such as (Titanium).
前記のプレート１１０の形状は四角形であり、各角部分は曲面からなる。 The plate 110 has a quadrangular shape, and each corner portion is a curved surface.
また、前記プレート１１０のそれぞれの角の内側にプレート１１０を脛椎に固定するネジ１００が挿入される少なくとも一つ以上の挿入孔１２０がプレート１１０を貫通して穿孔されており、前述した第１実施例と同様に脛椎固定施術の固定レベル（ｌｅｖｅｌ）に応じて挿入孔を２つ、６つ、８つ、またはそれ以上の個数で形成可能である。 Further, at least one insertion hole 120 through which the screw 100 for fixing the plate 110 to the tibia is inserted is drilled through the plate 110 inside each corner of the plate 110, and the first described above. Similar to the embodiment, two, six, eight, or more insertion holes can be formed according to the level of fixation of the tibial fixation.
そして、前記挿入孔１２０の内壁１２１は、ネジ１００のヘッド１０１部分の形状に噛合される曲面をなしている。 The inner wall 121 of the insertion hole 120 has a curved surface that meshes with the shape of the head 101 portion of the screw 100.
また、前記挿入孔１２０とプレート１１０の中央に形成された通孔１１１の間にプレート１１０を貫通して形成された拡張溝１５０を有し、前記挿入孔１２０と拡張溝１５０の境界には、プレート１１０の表面から所定の高さの段差面１２３を両側に形成したチャンネル溝１２２が形成される。 In addition, there is an extended groove 150 formed through the plate 110 between the insertion hole 120 and a through hole 111 formed in the center of the plate 110, and the boundary between the insertion hole 120 and the extended groove 150 is A channel groove 122 is formed in which step surfaces 123 having a predetermined height from the surface of the plate 110 are formed on both sides.
前記チャンネル溝１２２には、挿入孔１２０に挿入されるネジ１００をロック（ｌｏｃｋｉｎｇ）するガイド１３０が内接する。 A guide 130 that locks the screw 100 inserted into the insertion hole 120 is inscribed in the channel groove 122.
図１１の分解斜視図で示されているように、前記ガイド１３０は、水平方向に延長された平板状の上部顎１３１と下部顎１３２が垂直方向に延長された連結面１３３によって一体に結合したものである。 As shown in the exploded perspective view of FIG. 11, the guide 130 is integrally coupled by a connecting surface 133 in which a flat upper jaw 131 and a lower jaw 132 extending in the horizontal direction are extended in the vertical direction. Is.
そして、前記のようになったガイド１３０を２つ一組として、一側のガイド１３０の連結面１３３と他側のガイド１３０’の連結面１３３’の内側に弾性（ｔｅｎｓｉｏｎ）を持つ平板又は棒状のテンション部１４０を取り付ける。 Then, two guides 130 as described above are made into a pair, and a flat plate or a rod shape having tension inside the connecting surface 133 of the guide 130 on one side and the connecting surface 133 ′ of the guide 130 ′ on the other side. The tension part 140 is attached.
このとき、図１２に示すように、前記テンション部１４０は、チャンネル溝１２２の下端部に形成された挿入溝１１２に挿入され、このような状態で各ガイド１３０、１３０’の上部顎１３１の底面１３１ａと下部顎１３２の上面１３２ａの間にチャンネル溝１２２が内接することにより、各ガイド１３０、１３０’は、チャンネル溝１２２に結合される。 At this time, as shown in FIG. 12, the tension portion 140 is inserted into the insertion groove 112 formed at the lower end of the channel groove 122, and in this state, the bottom surface of the upper jaw 131 of each guide 130, 130 ′. The channel groove 122 is inscribed between the upper surface 132 a of the lower jaw 132 and the guides 130 and 130 ′ are coupled to the channel groove 122.
すると、このように結合された状態のガイド１３０の上部顎１３１は、前記チャンネル溝１２２の上面を通過して挿入孔１２０の中心方向に突出し、突出した上部顎１３１の底面１３１ａが挿入孔１２０に進入するネジ１００のヘッド１０１部分の上面に接触してネジ１００をロック（ｌｏｃｋｉｎｇ）し、ネジ１００が後退しないようにする掛り作用を付与する。 Then, the upper jaw 131 of the guide 130 in such a coupled state passes through the upper surface of the channel groove 122 and protrudes toward the center of the insertion hole 120, and the protruded bottom surface 131 a of the upper jaw 131 becomes the insertion hole 120. The screw 100 is locked by coming into contact with the upper surface of the head 101 portion of the entering screw 100, and a hanging action is applied so that the screw 100 does not move backward.
このように結合されたガイド１３０は、図１２に示すように、前記上部顎１３１と下部顎１３２が前記チャンネル溝１２２の両側の段差面１２３に引っ掛かるまで左右方向に回動が可能である。 As shown in FIG. 12, the guide 130 coupled in this way can be rotated in the left-right direction until the upper jaw 131 and the lower jaw 132 are caught by the step surfaces 123 on both sides of the channel groove 122.
このようなガイド１３０に取り付けられたテンション部１４０は、前記ガイド１３０にプレート１１０の中心方向に押す力を持つ自己テンション（ｓｅｌｆ−ｔｅｎｓｉｏｎ）を持つことになる。 The tension part 140 attached to the guide 130 has a self-tension that has a force to push the guide 130 toward the center of the plate 110.
したがって、図１３に示すように、前記ガイド１３０がテンション部１４０のテンション力によってプレート１１０の中心に向かって押され、テンション部１４０のテンション力によって挿入孔１２０の中心方向に再び復帰する作動をすることになる。 Accordingly, as shown in FIG. 13, the guide 130 is pushed toward the center of the plate 110 by the tension force of the tension part 140, and returns to the center of the insertion hole 120 again by the tension force of the tension part 140. It will be.
一方、未説明符号１３４は、ガイド１３０の上部顎１３１に形成された穴１３４である。 On the other hand, an unexplained symbol 134 is a hole 134 formed in the upper jaw 131 of the guide 130.
前記のように構成された本発明の第２実施形態の自己テンション部を有する頸椎固定装置２は、本発明の第１実施例の頸椎固定装置１と同一の作動を行い、このような本発明の第２実施例の頸椎固定装置２の動作を図１４の本発明の第２実施例のネジ挿入時の作動状態図を参照して説明する。 The cervical spine fixation device 2 having the self-tensioning portion of the second embodiment of the present invention configured as described above performs the same operation as the cervical spine fixation device 1 of the first embodiment of the present invention, and thus the present invention. The operation of the cervical spine fixation device 2 according to the second embodiment will be described with reference to the operation state diagram at the time of screw insertion according to the second embodiment of the present invention shown in FIG.
まず、図１４の上段図面のように、本発明の第２実施例のプレート１１０を固定させる機能のネジ１００が挿入孔１２０に進入するが、前記ネジ１００は、前述したように、上部のヘッド１０１部分と下部のネジ本体１０２からなる。 First, as shown in the upper drawing of FIG. 14, a screw 100 having a function of fixing the plate 110 of the second embodiment of the present invention enters the insertion hole 120. 101 part and lower screw main body 102 are comprised.
すると、下方に進入するネジ１００のヘッド１０１部分とガイド１３０が接触し、テンション部１４０によって弾性力が付与された状態のガイド１３０が進入するヘッド１０１の側面１０１ａによってプレート１１０の中心方向である後方に押されるようになる。この状態は、まだネジ１００によってプレートが固定されていない「アンロック（Ｕｎｌｏｃｋ）」状態である。 Then, the head 101 portion of the screw 100 entering the lower side and the guide 130 come into contact with each other, and the guide 130 in a state where the elastic force is applied by the tension unit 140 enters the rear side in the center direction of the plate 110 by the side surface 101a of the head 101. Will be pushed by. This state is an “Unlock” state in which the plate is not yet fixed by the screw 100.
しかし、前記のネジ１００が挿入孔１２０に更に進入するようになると、前記ヘッド１０１がガイド１３０の上部顎１３１の傾斜面に沿って下降して上部顎１３１と下部顎１３２の間の空間に凹入される。 However, when the screw 100 further enters the insertion hole 120, the head 101 descends along the inclined surface of the upper jaw 131 of the guide 130 and is recessed in the space between the upper jaw 131 and the lower jaw 132. Entered.
この時、上部顎１３１と下部顎１３２との間の空間に凹入されたネジ１００のヘッド１０１とガイド１３０との接触が解除され、後方に押された状態のテンション部１４０のテンション力によってガイド１３０が再び挿入孔１２０の中央方向に復帰する。 At this time, the contact between the head 101 of the screw 100 recessed in the space between the upper jaw 131 and the lower jaw 132 and the guide 130 is released, and the guide is applied by the tension force of the tension portion 140 in a state of being pushed backward. 130 returns to the center of the insertion hole 120 again.
すると、図１４の下段の図面に示されるように、チャンネル１２２の上面を通過して挿入孔１２０の中心方向に突出する上部顎１３１の底面１３１ａがネジ１００のヘッド１０１部分の上面と接触し、この状態でネジ１００のヘッド１０１の上面が上部顎１３１の底面１３１ａによって引っ掛かってネジ１００を「ロック（ｌｏｃｋｉｎｇ）」状態にするようにする。 Then, as shown in the lower drawing of FIG. 14, the bottom surface 131 a of the upper jaw 131 that passes through the upper surface of the channel 122 and protrudes toward the center of the insertion hole 120 comes into contact with the upper surface of the head 101 portion of the screw 100. In this state, the upper surface of the head 101 of the screw 100 is hooked by the bottom surface 131a of the upper jaw 131 so that the screw 100 is brought into a “locking” state.
このようなネジ１００のロック状態では、ネジ１００のヘッド１０１がガイド１３０の上部顎１３１によって引っ掛かるようになるため、脛椎固定装置のネジ後退現象を防止することになる。 In such a locked state of the screw 100, the head 101 of the screw 100 is hooked by the upper jaw 131 of the guide 130, so that the screw retraction phenomenon of the tibial fixation device is prevented.
一方、前記のように作動する本発明の第２実施例の頸椎固定装置２は、ネジ１００がプレートに垂直方向ではない所定の偏差角（α）を持って進入した場合にも、進入するネジ１００のヘッド１０１部分の偏差角度（α）に応じて、ガイド１３０がその結合されたチャンネル溝１２２の上で左方向または右方向に回動することができ、前述した第１実施例の頸椎固定装置１が持っている施術時の固定ネジの進入角度に注意する必要なく、頸椎固定装置のネジ固定を簡単に行うことができるという利点を得るようになる。 On the other hand, the cervical spine fixation device 2 according to the second embodiment of the present invention that operates as described above is a screw that enters even when the screw 100 enters with a predetermined deviation angle (α) that is not perpendicular to the plate. According to the deviation angle (α) of the head 101 portion of 100, the guide 130 can be rotated leftward or rightward on the coupled channel groove 122, and the cervical spine fixation of the first embodiment described above. There is an advantage that the screw fixing of the cervical vertebra fixing device can be easily performed without paying attention to the approach angle of the fixing screw at the time of the operation that the device 1 has.
以上の説明で、本発明の自己テンション部を有する頸椎固定装置の構成を添付図面を参照して詳細に説明したが、本発明は、当業者によって多様な修正、変更及び置換が可能であり、これらの修正、変更及び置換は、本発明の保護範囲に属するものと解釈されるべきものである。 In the above description, the configuration of the cervical spinal fixation device having the self-tensioning portion of the present invention has been described in detail with reference to the accompanying drawings, but the present invention can be variously modified, changed, and replaced by those skilled in the art. These modifications, changes and substitutions should be construed as belonging to the protection scope of the present invention.
１；本発明の第１実施例の頸椎固定装置
１０；プレート
２０；ネジ挿入孔
２１；内壁
２２；チャンネル溝
２３；段差面
３０；ガイド
３１；上部顎
３１ａ；上部顎の底面
３２；下部顎
３２ａ；下部顎の底面
３３；連結面
４０；テンション部
４１；ベース
４２；第１折曲部
４３；第２折曲部
４４；分岐部
４５；アーム
５０；拡張溝
１００；ネジ
１０１；ヘッド
１０１ａ；ヘッド側面
１０２；本体
２；本発明の第２実施例の頸椎固定装置
１１０；プレート
１１１；通孔
１１２；挿入溝
１２０；ネジ挿入孔
１２１；内壁
１２２；チャンネル溝
１２３；段差面
１３０；ガイド
１３１；上部顎
１３１ａ；上部顎の底面
１３２；下部顎
１３２ａ；下部顎の底面
１３３；連結面
１３４；穴
１４０；テンション部
１５０；拡張溝
DESCRIPTION OF SYMBOLS 1; Cervical vertebra fixation device 10 of 1st Example of this invention; Plate 20; Screw insertion hole 21; Inner wall
22; channel groove 23; stepped surface 30; guide 31; upper jaw
31a; bottom surface 32 of upper jaw; lower jaw
32a; bottom surface 33 of the lower jaw; connection surface 40; tension part 41; base
42; 1st bending part 43; 2nd bending part
44; bifurcation 45; arm 50; expansion groove 100; screw 101; head
101a; head side surface 102; main body 2; cervical spine fixing device 110 according to the second embodiment of the present invention; plate 111;
112; Insertion groove 120; Screw insertion hole 121; Inner wall
122; channel groove 123; stepped surface 130; guide 131; upper jaw
131a; bottom surface 132 of upper jaw; lower jaw
132a; bottom surface 133 of the lower jaw; connecting surface
134; hole 140; tension portion 150; expansion groove
Claims (4)
前記挿入孔とプレートの中心間にプレートを貫通して形成された拡張溝と、
前記挿入孔と前記拡張溝の境界に形成され、段差面を両側に形成したチャンネル溝と、
前記チャンネル溝に結合され、チャンネル溝上で左右に回動し、前記挿入孔に内接するネジをロックするガイドと、
前記ガイドをプレートの中心方向に押す力を付与し、前記ガイドが前記チャンネル溝上で前後に回動するように作用するテンション部と、
を含んで構成されることを特徴とする、前記脛椎固定装置。 In a tibial fixation device in which a screw is inserted into at least one insertion hole formed in a flat plate,
An expansion groove formed through the plate between the insertion hole and the center of the plate;
A channel groove formed at the boundary between the insertion hole and the extension groove, and having step surfaces on both sides;
A guide coupled to the channel groove, pivoted left and right on the channel groove, and locking a screw inscribed in the insertion hole;
A tension portion that applies a force to push the guide toward the center of the plate, and the guide acts to rotate back and forth on the channel groove;
The tibial fixation device as described above, comprising
前記拡張溝の縁の一側からプレートの中心方向に延長して形成されるベースと、
前記ベースの末端で前記ガイドに向かって曲がった第１折曲部と、
前記第１折曲部の末端で前記ガイドの連結面と平行に曲がった第２折曲部と、
前記第２折曲部とガイドの連結面との接触面をなすアームを含んで構成されることを特徴とする、請求項１に記載の脛椎固定装置。 The tension part is
A base formed by extending from one side of the edge of the expansion groove toward the center of the plate;
A first bent portion bent toward the guide at an end of the base;
A second bent portion bent in parallel with the connecting surface of the guide at the end of the first bent portion;
2. The tibial fixation device according to claim 1, comprising an arm that forms a contact surface between the second bent portion and a connecting surface of the guide.
水平方向に延長された平板状の上部顎と下部顎が垂直方向に延長された連結面と結合されて一体となる形状であり、
前記上部顎の底面と下部顎の上面の間に前記プレートのチャンネル溝部分が結合され、
前記上部顎の底面がネジのヘッド部分の上面に接触し、ネジをロックすることを特徴とする、請求項２に記載の脛椎固定装置。 The guide is
A flat upper jaw and a lower jaw extending in the horizontal direction are combined with a connecting surface extended in the vertical direction to be integrated,
A channel groove portion of the plate is coupled between the bottom surface of the upper jaw and the top surface of the lower jaw;
3. The tibial fixation device according to claim 2, wherein the bottom surface of the upper jaw contacts the upper surface of the head portion of the screw to lock the screw.
水平方向に延長された平板状の上部顎と下部顎が垂直方向に延長された連結面によって一体に結合されたガイドであり、
前記ガイド２つを一組として一側のガイドの連結面と他側のガイドの連結面の内側に弾性のテンション部が取り付けられ、
前記テンション部は、前記チャンネル溝の下端部に形成された挿入溝に挿入され、各ガイドの上部顎の底面と下部顎の上面の間にチャンネル溝が内接することにより、各ガイドがチャンネル溝に結合され、
結合されたガイドの上部顎の底面がネジのヘッド部分の上面に接触し、ネジをロックすることを特徴とする、請求項１に記載の脛椎固定装置。 The guide is
It is a guide in which a flat upper jaw and a lower jaw extended in the horizontal direction are integrally connected by a connecting surface extended in the vertical direction,
An elastic tension part is attached to the inside of the connecting surface of the guide on one side and the connecting surface of the guide on the other side as a set of the two guides,
The tension portion is inserted into an insertion groove formed at the lower end of the channel groove, and the channel groove is inscribed between the bottom surface of the upper jaw and the upper surface of the lower jaw of each guide, whereby each guide becomes a channel groove. Combined,
The tibial fixation device of claim 1, wherein the bottom surface of the upper jaw of the combined guide contacts the top surface of the head portion of the screw and locks the screw.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2012-0085115 | 2012-08-03 | ||
| KR20120085115 | 2012-08-03 | ||
| KR1020130087576A KR101504260B1 (en) | 2012-08-03 | 2013-07-24 | Apparatus for fixing a cervical spine having self tension part |
| KR10-2013-0087576 | 2013-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2014030719A true JP2014030719A (en) | 2014-02-20 |
| JP5735056B2 JP5735056B2 (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2013156769A Expired - Fee Related JP5735056B2 (en) | 2012-08-03 | 2013-07-29 | Cervical spine fixation device with self-tensioning section |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5735056B2 (en) |
| KR (1) | KR101504260B1 (en) |
| BR (1) | BR102013019747A2 (en) |
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|---|---|---|---|---|
| CN105708508A (en) * | 2016-04-22 | 2016-06-29 | 李鹏 | Cervical vertebra channel expanding device |
| CN105852948A (en) * | 2016-04-22 | 2016-08-17 | 李鹏 | Novel channel expanding device used for cervical vertebrae and provided with external light sources |
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| KR101599603B1 (en) | 2013-08-26 | 2016-03-03 | 경북대학교 산학협력단 | Medical inserting apparatus |
| KR101639887B1 (en) | 2014-11-11 | 2016-07-14 | 경북대학교 산학협력단 | A system for fixing cervical vertebrae and a driver used for an appratus for fixing cervical vertebrae |
| KR101608949B1 (en) | 2014-11-19 | 2016-04-04 | 경북대학교 산학협력단 | A system for fixing cervical vertebrae, an appratus for fixing cervical vertebrae and a driver used for an appratus for fixing cervical vertebrae |
| KR101670768B1 (en) | 2015-07-16 | 2016-10-31 | 경북대학교 산학협력단 | Screw anchor assembly |
| US10874445B2 (en) | 2015-10-13 | 2020-12-29 | Kyungpook National University Industry-Academic Cooperation Foundation | Screw fixing apparatus |
| KR101681668B1 (en) * | 2015-11-17 | 2016-12-02 | 김윤기 | Cervical plate device and installation method thereof |
| KR101681665B1 (en) * | 2015-11-17 | 2016-12-02 | 김윤기 | Cervical plate device |
| KR101712610B1 (en) | 2015-12-29 | 2017-03-06 | 경북대학교 산학협력단 | A rod connecter |
| KR101791004B1 (en) | 2016-06-08 | 2017-10-27 | 경북대학교 산학협력단 | Screw anchor assembly and a method for using the same to pedicle screw instrumentation |
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Also Published As
| Publication number | Publication date |
|---|---|
| BR102013019747A2 (en) | 2015-09-22 |
| JP5735056B2 (en) | 2015-06-17 |
| KR20140018796A (en) | 2014-02-13 |
| KR101504260B1 (en) | 2015-03-20 |
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