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KR101254962B1 - Instrument for fixing of cervical vertebrae - Google Patents

Instrument for fixing of cervical vertebrae Download PDF

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Publication number
KR101254962B1
KR101254962B1 KR1020110065853A KR20110065853A KR101254962B1 KR 101254962 B1 KR101254962 B1 KR 101254962B1 KR 1020110065853 A KR1020110065853 A KR 1020110065853A KR 20110065853 A KR20110065853 A KR 20110065853A KR 101254962 B1 KR101254962 B1 KR 101254962B1
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plate
cervical spine
locking plate
screw
hole
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KR20130004669A (en
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김서곤
김일
임동수
전창수
최종설
문영식
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주식회사 솔고 바이오메디칼
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7059—Cortical plates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Neurology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

본 발명은, 경추에 플레이트를 밀착시키고 상기 플레이트에 형성된 스크류홀을 통하여 스크류를 경추에 삽입하되 상기 스크류의 헤드부가 스크류홀에 안착되는 경추 고정용 기구에 있어서,
상기 플레이트에는 잠금판이 결합되되, 상기 잠금판은 스크류홀을 부분적으로 또는 전체적으로 차폐하는 잠금위치와 스크류홀을 개방시키는 열림위치로 회전가능하여 회전 위치에 따라 스크류의 이탈을 단속하는 것을 특징으로 한다.
상기와 같은 구성의 본 발명은, 잠금판의 회전에 따라 용이하게 스크류의 풀림을 방지할 수 있는 효과가 있다.The present invention, in close contact with the cervical spine plate and through the screw hole formed in the plate is inserted into the cervical spine, but the head portion of the screw in the cervical spine fixing mechanism is seated in the screw hole,
The plate is coupled to the locking plate, the locking plate is rotatable to the locking position to partially or entirely shield the screw hole and the open position to open the screw hole is characterized in that to interrupt the separation of the screw according to the rotation position.
The present invention of the configuration as described above, there is an effect that can be easily prevented loosening of the screw in accordance with the rotation of the locking plate.

Description

경추 고정용 기구{Instrument for fixing of cervical vertebrae}Instrument for fixing of cervical vertebrae

본 발명은 이웃하는 경추(頸椎)들을 서로 고정시키기 위한 경추 고정용 기구에 관한 것으로서, 플레이트에 밀착된 경추에 삽입되는 스크류의 풀림(또는 뽑힘)을 방지하기 위하여 상기 스크류의 상단을 (부분적으로 또는 전체적으로) 차폐할 수 있는 잠금판을 구비한 경추 고정용 기구에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for fixing cervical vertebrae for fixing adjacent cervical vertebrae to each other, wherein the top of the screw (partially or Overall) relates to a cervical spine fixing mechanism having a locking plate that can be shielded.

경추의 디스크 이탈, 협착 등과 같은 질환을 치료하기 위하여 경추 고정용 기구가 사용되고 있다.In order to treat diseases such as disc detachment and narrowing of the cervical spine, cervical spine fixing devices are used.

경추 고정용 장치는 이웃하는 경추들에 각각 삽입되는 두 개 이상의 스크류들과 상기 스크류들이 안착되어 경추의 위치를 고정시키는 플레이트로 구성된다. The device for fixing the cervical spine consists of two or more screws respectively inserted into neighboring cervical vertebrae and a plate on which the screws are seated to fix the position of the cervical spine.

도 1 을 참조하면, 종래의 경추 고정용 기구는 이웃하는 경추들 사이의 위치를 고정시키기 위해 일측에서 플레이트를 밀착시킨 상태에서 플레이트에 형성된 스크류홀을 통해 스크류를 경추에 삽입하는 방식으로 시술된다.Referring to FIG. 1, a conventional cervical spine fixing mechanism is performed by inserting a screw into a cervical spine through a screw hole formed in a plate in a state in which the plate is in close contact with one side to fix a position between neighboring cervical spines.

상기 스크류는 렌치(Wrench)가 삽입될 수 있도록 헤드부에 렌치홈이 형성되고 경추에 삽입되는 부분의 외주면에는 회전에 따라 경추에 삽입될 수 있도록 나사산이 형성된다. The screw is formed with a wrench groove is formed in the head portion so that the wrench (Wrench) can be inserted, and a thread is formed on the outer circumferential surface of the portion inserted into the cervical spine to be inserted into the cervical spine as it is rotated.

각각의 스크류들은 헤드부가 스크류홀에 안착되어 플레이트를 경추에 고정시키나, 시술 후, 시간이 지남에 따라 또는 외부 충격에 의하여 스크류가 빠지게 되는 풀아웃(pull-out)이 발생하는 문제점이 있었다.
Each screw has a head part seated in the screw hole to fix the plate to the cervical spine, but after the procedure, there is a problem that pull-out occurs that the screw is pulled out over time or due to external impact.

따라서, 상기와 같은 풀아웃 현상을 방지하고 스크류의 이탈을 방지할 수 있는 경추 고정용 기구의 개발이 요구되었다.Therefore, the development of the cervical spine fixing mechanism that can prevent the pull-out phenomenon as described above and prevent the detachment of the screw is required.

본 발명은 상기와 같은 요구에 따라 풀아웃 현상을 방지하도록 잠금자를 구비하되 상기 잠금자는 시술자의 필요에 따라 용이하게 개폐위치가 조절될 수 있는 경추 고정용 기구를 제공하는 것에 주목적이 있다.
The present invention has a locker to prevent the pull-out phenomenon in accordance with the above requirements, the locker is the main object to provide a mechanism for fixing the cervical spine that can be easily opened and closed position according to the needs of the operator.

상기와 같은 목적을 달성하기 위한 본 발명은, 경추에 플레이트를 밀착시키고 상기 플레이트에 형성된 스크류홀을 통하여 스크류를 경추에 삽입하되 상기 스크류의 헤드부가 스크류홀에 안착되는 경추 고정용 기구에 있어서, 상기 플레이트에는 잠금판이 결합되되, 상기 잠금판은 스크류홀을 부분적으로 또는 전체적으로 차폐하는 잠금위치와 스크류홀을 개방시키는 열림위치로 회전가능하여 회전 위치에 따라 스크류의 이탈을 단속한다.In the present invention for achieving the above object, the plate is in close contact with the cervical spine and the screw through the screw hole formed in the plate to the cervical spine, but the head portion of the screw in the cervical spine fixing mechanism is seated in the screw hole, the A locking plate is coupled to the plate, and the locking plate is rotatable to an open position for partially or totally shielding the screw hole and an open position for opening the screw hole to intercept the separation of the screw according to the rotation position.

그리고, 상기 플레이트에는 장착홀이 관통되고, 상기 잠금판의 바닥면에는 상기 장착홀에 삽입되는 돌기부가 형성되며, 상기 돌기부는 길이방향을 따라 외경의 차이에 의해 단차(段差)가 형성된 형상이되, 외경이 축소되도록 탄성변형하여 장착홀에 삽입된 후 탄성복원하여 장착홀에 결속된다.In addition, a mounting hole penetrates through the plate, and a protrusion is inserted into the mounting hole on the bottom surface of the locking plate, and the protrusion has a shape in which a step is formed by a difference in outer diameter along a longitudinal direction. It is elastically deformed so that the outer diameter is reduced, and is inserted into the mounting hole, and then elastically restored and bound to the mounting hole.

상기 돌기부는 탄성변형을 유도하기 위하여 절개부가 형성되어 다수 개로 분할된 형상을 갖는다.The protrusion has a shape in which a cutout is formed to induce elastic deformation and is divided into a plurality.

아울러, 상기 잠금판의 바닥면에는 고정돌기가 돌출되고, 상기 플레이트에는 안착홈이 형성되되, 상기 안착홈은 잠금판이 회동하여 열림위치 또는 잠금위치에 도달했을 때, 고정돌기가 끼워지는 위치에 형성된다.In addition, a fixing protrusion protrudes from the bottom surface of the locking plate, and a seating groove is formed in the plate, and the seating groove is formed at a position where the fixing protrusion is inserted when the locking plate is rotated to reach an open position or a locking position. do.

상기 고정돌기와 안착홈은 소정의 각도로 경사가 형성된 만곡(彎曲) 형상을 갖는다.The fixing protrusion and the seating groove have a curved shape in which an inclination is formed at a predetermined angle.

그리고, 상기 잠금판의 전면에는 렌치홀이 형성되고, 상기 렌치홀에 끼워져 잠금판을 회전시키는 전용렌치를 더 포함된다.
A wrench hole is formed on the front surface of the lock plate, and further includes a dedicated wrench inserted into the wrench hole to rotate the lock plate.

상기와 같은 구성의 본 발명은, 잠금판의 회전에 따라 용이하게 스크류의 풀림(또는 뽑힘 등)을 방지할 수 있는 효과가 있다.The present invention having the above configuration has the effect of preventing loosening (or pulling out, etc.) of the screw easily according to the rotation of the locking plate.

상기 잠금판은 탄성변형을 이용한 억지끼움으로 체결되어 탈착이 가능하여 스크류의 크기에 따라 다른 크기의 잠금판을 용이하게 교체할 수 있는 효과가 있다.The locking plate is fastened with an interference fit using elastic deformation, so that the locking plate can be easily detached from the locking plate according to the size of the screw.

상기 잠금판은 고정돌기에 의해 잠금위치와 풀림위치에서 고정될 수 있는 효과가 있다.The locking plate has an effect that can be fixed in the locking position and the release position by the fixing projections.

상기 고정돌기는 만곡된 형상이므로 (고정돌기를 안착홈에서 뽑아낼 필요없이) 소정의 회전력에 의해 활주함으로서 용이하게 회전가능한 효과가 있다.Since the fixing protrusion is curved, it is possible to easily rotate by sliding by a predetermined rotational force (without the need to remove the fixing protrusion from the seating groove).

본 발명의 경추 고정용 기구는 전용렌치가 추가적으로 제공되어 더욱 용이하게 잠금판을 회전시킬 수 있는 효과가 있다.
Cervical vertebrae fixing mechanism of the present invention is provided with a dedicated wrench additionally has an effect that can rotate the locking plate more easily.

도 1 은 종래의 경추 고정장치의 모습을 도시한 사시도,
도 2 는 본 발명의 바람직한 실시예에 따른 경추 고정용 기구의 분해사시도,
도 3 은 본 발명의 잠금판의 하부 모습을 도시한 사시도,
도 4 는 본 발명에 따른 경추 고정용 기구의 하부 모습을 도시한 사시도 및 잠금판의 돌기부가 장착홀에 진입할 때의 모습과 진입완료 후 탄성복원된 모습을 도시한 도면,
도 5 는 본 발명의 전용렌치를 이용하여 잠금판을 회전시키는 모습을 순차적으로 도시한 사시도들.1 is a perspective view showing a state of a conventional cervical spine fixing device,
Figure 2 is an exploded perspective view of the cervical spine fixing mechanism according to a preferred embodiment of the present invention,
3 is a perspective view showing a bottom view of the locking plate of the present invention,
Figure 4 is a perspective view showing a lower view of the cervical spine fixing mechanism according to the present invention and a view showing the state when the projection of the locking plate enters the mounting hole and the state after the completion of the elastic restoration,
5 is a perspective view sequentially showing a state of rotating the locking plate using a dedicated wrench of the present invention.

이하, 도면을 참조하여 본 발명의 바람직한 실시예에 따른 경추 고정용 기구를 더욱 상세히 설명한다.Hereinafter, with reference to the drawings will be described in more detail the mechanism for fixing the cervical spine according to a preferred embodiment of the present invention.

도 2 를 참조하면, 본 발명의 경추 고정용 기구는, 이웃하는 경추에 밀착되도록 소정의 곡률로 만곡된 형상이되 다수 개의 스크류홀들(23) 및 이웃하는 스크류홀들(23) 사이에 장착홀(21)이 형성된 플레이트(20)와, 상기 스크류홀(23)을 통해 경추에 삽입되되 상단의 헤드부(31)가 스크류홀(23)에 안착되는 스크류(30) 및 상기 장착홀(21)에 삽입되어 스크류홀(23)을 차폐하도록 회전하는 잠금판(10)으로 구성된다.Referring to FIG. 2, the cervical spine fixing mechanism of the present invention has a curved shape with a predetermined curvature to be in close contact with a neighboring cervical spine, and is mounted between a plurality of screw holes 23 and neighboring screw holes 23. The plate 20 and the mounting hole 21 in which the plate 20 and the hole 21 are inserted into the cervical vertebrae through the screw hole 23 and the upper head 31 is seated in the screw hole 23. It is composed of a locking plate 10 is inserted into the rotation plate to rotate to shield the screw hole (23).

본 발명에 따른 플레이트(20)는 각 변이 소정의 곡률로 라운딩된 장방형 형상이되, 각 모서리 부근에 스크류홀들(23)이 각각 형성된다. 그리고, 양측의 스크류홀들(23) 사이에는 잠금판(10)이 각각 장착될 수 있도록 장착홀(21)이 형성된다. 상기 장착홀(21)의 주변으로는 장착홀(21)을 사이에 두고 소정의 간격으로 4 개의 안착홈들(22)이 형성된다. 상기 안착홈(22)은 표면이 (계란 형태와 같이) 곡면(曲面)으로 파인 모양으로 형성된다.The plate 20 according to the present invention has a rectangular shape in which each side is rounded to a predetermined curvature, and screw holes 23 are formed around each corner. In addition, mounting holes 21 are formed between the screw holes 23 on both sides so that the locking plates 10 may be mounted. Four mounting grooves 22 are formed around the mounting hole 21 at predetermined intervals with the mounting hole 21 therebetween. The seating groove 22 is formed in a shape in which the surface is cut into a curved surface (like egg shape).

본 발명의 잠금판(10)의 하부 모습은 도 3 에 도시된 바와 같다. 도시된 바와 같이, 잠금판(10)은 각 변(邊)이 소정의 곡률로 만곡된 장방형 형상이되, 각 모서리 근방에는 플레이트(20)의 안착홈(22)에 삽입될 수 있는 크기로 고정돌기(12)가 돌출된다. The lower view of the locking plate 10 of the present invention is as shown in FIG. As shown, the locking plate 10 has a rectangular shape in which each side is curved at a predetermined curvature, and fixed to a size that can be inserted into the seating groove 22 of the plate 20 near each corner. The protrusion 12 protrudes.

상기 고정돌기(12)는 반구(半球) 형상, 계란형 형상 또는 절두형 각뿔 형상 등 다양한 모양으로 형성될 수 있으나, 잠금판(10)의 회전시 안착홈(22)에서 활주하여 이탈할 수 있도록 외주면은 만곡된(둥글둥글 하게 라운드된) 형상으로 형성된다.The fixing protrusion 12 may be formed in various shapes such as hemispherical shape, egg shape or truncated pyramid shape, but the outer circumferential surface so as to slide off the seating groove 22 when the locking plate 10 is rotated. Is formed into a curved (rounded round) shape.

그리고, 잠금판(10)의 중앙에는 장착홀(21)에 끼워지는 돌기부(11)가 형성된다. 상기 돌기부(11)는 외경(外境)의 차이에 의해 단차가 형성된 모양으로서 (장착홀에 진입시) 외경이 축소되도록 탄성변형하여 장착홀(21)에 삽입된 후 탄성복원하여 장착홀(21)에 결속된다. In the center of the locking plate 10, a protrusion 11 fitted into the mounting hole 21 is formed. The protrusion 11 is a shape in which a step is formed due to a difference in outer diameter (when entering the mounting hole) is elastically deformed to reduce the outer diameter (insertion into the mounting hole 21) and then elastically restored to the mounting hole 21 Bound to.

따라서, 상기 잠금판(10)은 소정의 탄성을 갖는 재질로 제조되되, 돌기부(11)의 탄성변형 및 복원을 유도 또는 촉진하도록 돌기부(11)는 절개부(11`)에 의해 네 부분으로 나눠지며 각 부분들은 소정의 간격을 두고 이격된다. Therefore, the locking plate 10 is made of a material having a predetermined elasticity, but the protrusions 11 are divided into four parts by the cutouts 11 'to induce or promote elastic deformation and restoration of the protrusions 11. Each part is spaced at a predetermined interval.

즉, 도 4 에 도시된 바와 같이, 상기 돌기부(11)가 장착홀(21)에 끼워질 때 돌기부(11)의 각 부분들은 서로 간의 간격이 좁혀지도록 탄성변형하되, 단차가 형성된 부분이 통과되면 다시 탄성복원하여 단차가 형성된 부분에 의해 구속됨으로서 장착홀(21)에 결속된다.That is, as shown in FIG. 4, when the protrusions 11 are fitted into the mounting holes 21, the respective portions of the protrusions 11 are elastically deformed so as to narrow the gap therebetween. It is restrained by the portion where the step is formed again by restoring elasticity, thereby being bound to the mounting hole 21.

따라서, 상기 잠금판(10)은 잠금판(10)의 일부가 스크류홀(23)의 상측을 부분적으로 또는 전체적으로 차폐하는 잠금위치와 스크류홀(23)을 완전히 개방하는 열림위치로 회전가능하게 플레이트(20)에 결합된다. Accordingly, the locking plate 10 is rotatably plated in a locking position in which a part of the locking plate 10 partially or entirely shields the upper side of the screw hole 23 and an open position in which the screw hole 23 is completely opened. Coupled to (20).

그리고, 안착홈(23) 및/또는 고정돌기(12)의 위치설정을 통하여, 상기 잠금판(10)은 열림위치 또는 잠금위치로 회전됐을 때, 고정돌기(12)가 안착홈(23)에 끼워짐으로서 고정될 수 있다. And, through the positioning of the seating groove 23 and / or the fixing projections 12, when the locking plate 10 is rotated to the open position or the locking position, the fixing projections 12 to the seating groove 23 It can be fixed by being fitted.

또한, 본 발명은 잠금판(10)을 더 용이하게 회전시킬 수 있도록 끝단에 핀이 돌출된 전용렌치를 추가적으로 제공한다. 그리고, 상기 잠금판(10)에는 핀이 끼워질 수 있도록 렌치홀(13)이 형성된다. In addition, the present invention additionally provides a dedicated wrench with a pin protruding at the end to rotate the locking plate 10 more easily. In addition, a wrench hole 13 is formed in the locking plate 10 so that a pin can be fitted.

본 발명에 따른 렌치홀(13)은 잠금판(10)의 전면에 (회전축이 되는 돌기부를 중앙에 두고) 두 개가 이격되어 배치된다. 그리고, 전용렌치에도 두 개의 핀이 형성되어, 도 5 에 도시된 바와 같이 잠금판(10)을 회전시킬 수 있다. Wrench hole 13 according to the present invention is disposed two spaced apart (on the center of the projection to be a rotating shaft) on the front of the lock plate 10. In addition, two pins are formed in the dedicated wrench to rotate the locking plate 10 as illustrated in FIG. 5.

참고적으로, 상기 렌치홀은 통상적으로 사용되는 드라이버 또는 렌치(wrench)를 사용할 수 있도록 육각홈 또는 십자홈으로 형성될 수도 있다.For reference, the wrench hole may be formed as a hexagonal groove or cross groove so as to use a driver or a wrench that is commonly used.

도 5 에 도시된 바와 같이, 잠금판(10)이 열림위치에 있는 상태에서 스크류(30)를 삽입한 후 전용렌치를 이용하여 스크류(30) 상단의 헤드부를 부분적으로(또는 전체적으로) 차폐함으로서 스크류(30)의 풀아웃현상을 방지할 수 있다.As shown in FIG. 5, after inserting the screw 30 in a state where the locking plate 10 is in the open position, the screw is partially (or entirely) shielded by using a dedicated wrench to partially or completely shield the head part of the screw 30. The pull-out phenomenon of 30 can be prevented.

본 명세서와 도면에 개시된 본 발명의 실시예들은 이해를 돕기 위해 특정 예를 제시한 것에 지나지 않으며, 본 발명의 범위를 한정하고자 하는 것은 아니다. 여기에 개시된 실시예들 이외에도 본 발명의 기술적 사상에 바탕을 둔 다른 변형예들이 실시 가능하다는 것은, 본 발명이 속하는 기술분야에서 통상의 지식을 가진자에게 자명한 것이다.
Embodiments of the present invention disclosed in the specification and drawings are only presented as specific examples for clarity and are not intended to limit the scope of the invention. In addition to the embodiments disclosed herein, it is apparent to those skilled in the art that other modifications based on the technical idea of the present invention may be implemented.

10 : 잠금판
11 : 돌기부
12 : 고정돌기
20 : 플레이트
21 : 장착홀
22 : 안착홈
23 : 스크류홀
30 : 스크류10: locking plate
11: protrusion
12: fixed protrusion
20: Plate
21: mounting hole
22: settled groove
23: screw hole
30: screw

Claims (6)

경추에 플레이트를 밀착시키고 상기 플레이트에 형성된 스크류홀을 통하여 스크류를 경추에 삽입하되 상기 스크류의 헤드부가 스크류홀에 안착되는 경추 고정용 기구에 있어서,
상기 플레이트에는 잠금판이 결합되되, 상기 잠금판은 스크류홀을 부분적으로 또는 전체적으로 차폐하는 잠금위치와 스크류홀을 개방시키는 열림위치로 회전가능하여 회전 위치에 따라 스크류의 이탈을 단속하고,
상기 플레이트에는 장착홀이 관통되며, 상기 잠금판의 바닥면에는 상기 장착홀에 삽입되는 돌기부가 형성되고,
상기 돌기부는 길이방향을 따라 외경의 차이에 의해 단차(段差)가 형성된 형상이되, 외경이 축소되도록 탄성변형하여 장착홀에 삽입된 후 탄성복원하여 장착홀에 결속되는 것을 특징으로 하는 경추 고정용 기구.
In the cervical spine fixing mechanism in which the plate is in close contact with the cervical spine and a screw is inserted into the cervical spine through a screw hole formed in the plate, but the head of the screw is seated in the screw hole.
A locking plate is coupled to the plate, and the locking plate is rotatable to a locking position to partially or entirely shield the screw hole and an open position to open the screw hole, thereby interfering with the removal of the screw according to the rotation position.
Mounting holes are penetrated through the plate, and protrusions inserted into the mounting holes are formed on the bottom surface of the locking plate.
The protruding portion has a shape in which a step (段 差) is formed by a difference in outer diameter along a longitudinal direction, and is elastically deformed so that the outer diameter is reduced and inserted into the mounting hole, and then elastically restored to bind to the mounting hole. Instrument.
삭제delete 제 1 항에 있어서, 상기 돌기부는 탄성변형을 유도하기 위하여 절개부가 형성되어 다수 개로 분할된 형상을 갖는 것을 특징으로 하는 경추 고정용 기구.
The method of claim 1, wherein the projection is a cervical spine fixing mechanism, characterized in that the incision is formed in order to induce elastic deformation divided into a plurality.
제 1 항 또는 제 3 항에 있어서, 상기 잠금판의 바닥면에는 고정돌기가 돌출되고, 상기 플레이트에는 안착홈이 형성되되,
상기 안착홈은 잠금판이 회동하여 열림위치 또는 잠금위치에 도달했을 때, 고정돌기가 끼워지는 위치에 형성되는 것을 특징으로 하는 경추 고정용 기구.
According to claim 1 or 3, wherein the fixing projection protrudes on the bottom surface of the locking plate, the seating groove is formed in the plate,
The seating groove is fixed to the cervical spine, characterized in that when the locking plate is rotated to reach the open position or the lock position, the fixing projection is inserted into the position.
제 4 항에 있어서, 상기 고정돌기와 안착홈은 경사가 형성된 만곡(彎曲) 형상을 갖는 것을 특징으로 하는 경추 고정용 기구.
5. The cervical spine fixing mechanism according to claim 4, wherein the fixing protrusion and the seating groove have a curved shape having an inclined shape.
제 5 항에 있어서, 상기 잠금판의 전면에는 렌치홀이 형성되고, 상기 렌치홀에 끼워져 잠금판을 회전시키는 전용렌치를 더 포함하는 것을 특징으로 하는 경추 고정용 기구.
6. The cervical spine fixing mechanism according to claim 5, wherein a wrench hole is formed on a front surface of the locking plate, and further includes a dedicated wrench fitted to the wrench hole to rotate the locking plate.
KR1020110065853A 2011-07-04 2011-07-04 Instrument for fixing of cervical vertebrae Active KR101254962B1 (en)

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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
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US10874445B2 (en) 2015-10-13 2020-12-29 Kyungpook National University Industry-Academic Cooperation Foundation Screw fixing apparatus
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