KR200299664Y1 - pedicle screw - Google Patents
pedicle screw Download PDFInfo
- Publication number
- KR200299664Y1 KR200299664Y1 KR20-2002-0021360U KR20020021360U KR200299664Y1 KR 200299664 Y1 KR200299664 Y1 KR 200299664Y1 KR 20020021360 U KR20020021360 U KR 20020021360U KR 200299664 Y1 KR200299664 Y1 KR 200299664Y1
- Authority
- KR
- South Korea
- Prior art keywords
- screw
- pedicle screw
- fixing bolt
- thread
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 claims abstract description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 13
- 238000010168 coupling process Methods 0.000 description 13
- 238000005859 coupling reaction Methods 0.000 description 13
- 230000006698 induction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Classifications
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (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 척추경 나사못의 잠금 방식에 관한 것으로 고정 볼트와 나사못 헤드사이의 나사산의 각도를 이용하여 고정 캡이 필요치 않도록 함으로써 고정 볼트와 나사못 헤드부분이 벌어지는 것을 방지하고, 연결로드와 나사못을 견고하게 고정시킬 수 있게 함으로써 연결로드와 나사못의 고정을 쉽게 하여 수술시간지연등의 비효율적인 측면을 개선할 수 있으며, 궁극적으로 척추수술을 시간적인 측면이나 정확도 측면에서 매우 효과적으로 수행할 수 있도록 한 척추경 나사못을 제공하고자 한 것이다.The present invention relates to a locking method of the pedicle screw, so that the fixing cap is not necessary by using the angle of the thread between the fixing bolt and the screw head, thereby preventing the fixing bolt and the screw head portion from spreading, and firmly connecting the rod and the screw. By making it easy to fix the connecting rod and the screw, it is possible to improve the inefficient aspects such as the delay of the operation time, and ultimately the pedicle screw which can perform the spinal surgery very effectively in terms of time and accuracy. It is intended to provide.
Description
본 발명은 척추경 나사못의 헤드결합 구조에 관한 것으로 특히 척추경 나사못의 고정 볼트를 체결할 때 나사봉의 헤드부가 바깥쪽으로 벌어지면서 가해지는 힘에 의해 고정 캡이 탈거되는 것을 막을 수 있는 헤드와 고정 볼트간의 나사산의 각도에 의해 방지하고 고정 캡이 필요치 않음으로써 고정 캡과 로드와의 간섭을 배제할 수 있고 고정 볼트와 나사못의 헤드결합이 용이하며 고정 캡의 탈거나 간섭으로 인한 수술시간지연등의 비효율적인 측면을 개선할 수 있도록 한 척추경 나사못의 관한 것이다.The present invention relates to a head coupling structure of a pedicle screw, in particular a head and a fixing bolt which can prevent the fixing cap from being removed by a force applied while the head of the screw rod is outward when the fixing bolt of the pedicle screw is fastened. It is prevented by the angle of thread of the liver and does not need the fixing cap, which can eliminate the interference between the fixing cap and the rod, easy to combine the head of the fixing bolt and screw, and inefficient operation time delay due to the removal or interference of the fixing cap. It is about one pedicle screw that can improve the lateral aspect.
일반적으로 척추의 일부가 손상된 환자가 그 상태에서 활동을 할 수 없고 손상정도가 심하지 않아서 활동할 수 있다 하더라도 척추의 손상된 부분이 다른 인접부분이 눌러지거나 닿게 됨으로써 통증을 유발하게 되고 치료를 하더라도 회복이 늦어지게 된다.In general, even if a patient with a damaged part of the spine is unable to work in that state and can be active because the damage is not severe enough, the damaged part of the spine will be pressed or touched by another adjacent part, causing pain, and recovery will be slow. You lose.
따라서 척추의 일부가 파손되거나 손상된 환자의 경우 그 손상된 척추부분이 늘어지거나 압박되지 않도록 인접한 척추부분을 인공보조물을 사용하여 지지하는 수술을 한다.Therefore, in the case of a damaged or damaged part of the spine, surgery is performed to support the adjacent vertebral part using an artificial prosthesis so that the damaged vertebral part is not stretched or compressed.
이 경우에 사용되는 척추 지지용 인공보조물은 손상된 척추의 상하 측에 삽입 설치되어 고정대 역할을 하는 척추경 나사못과 각각의 척추경 나사못을 통해 연결되어 지지대 역할을 하는 로드로 이루어져 있다.The spinal support prosthesis used in this case is inserted into the upper and lower sides of the damaged spine is composed of a pedicle screw that acts as a fixture and a rod that is connected through each pedicle screw to act as a support.
종래에 헤드결합부는 도 5에서와 같이 척추경 나사못(30)의 헤드결합홈(31) 상측의 개구부(32) 양측에 있는 지지벽(33) 내면 또는 외면에 나사부(34)를 형성한 구성으로 결합구(35)의 지지관(36)을 지지벽(33) 외주에 끼운 다음 나사결합체(37)를 나사 결합하는 방법으로 로드(20)가 수평으로 끼워지지 않고 상하 경사각도로 끼워질 때에는 별도의 유도 기구를 사용하여 로드(20)를 결합홈(31)에 압지 시켜 주어야 결합구(35)를 나사와 링 또는 캡을 사용하여 결합 할 수 있었다.Conventionally, the head coupling portion has a configuration in which the screw portion 34 is formed on the inner surface or the outer surface of the support wall 33 on both sides of the opening 32 on the upper side of the head coupling groove 31 of the pedicle screw 30 as shown in FIG. 5. When the rod 20 is not horizontally fitted but is inserted at an inclined angle up and down by inserting the support pipe 36 of the coupler 35 into the outer circumference of the support wall 33 and then screwing the screw assembly 37 therein, The rod 20 was pressed into the coupling groove 31 by using an induction mechanism, so that the coupling hole 35 could be combined using a screw and a ring or a cap.
즉, 결합구(35)의 나사결합체(37)가 결합홈(31)의 나사부에 결합되기 전에는 로드(20)를 결합홈(31)에 별도의 유도기구로 압지 시켜야 될 뿐만 아니라 나사결합체(37)를 사용하여야만 로드를 가결합시킬 수 있으며 이로 인하여 외부에 나사를 사용하거나 또는 링(outer ring)도는 캡(cap)을 사용하여야 분할된 양측 지지 벽의 나사부의 미약한 결합력을 보완할 수 있으나 이는 외부에 링이나 캡을 사용함으로써 외부의 폭 크기가 증가하여 수술시 좁은 공간에서 상호간에 간섭을 일으킬 소지가 있었다.That is, before the screw assembly 37 of the coupling hole 35 is coupled to the threaded portion of the coupling groove 31, the rod 20 must be pressed into the coupling groove 31 by a separate induction mechanism as well as the screw assembly 37. The rods can be temporarily joined only by using a screw, and therefore, a screw on the outside or an outer ring or cap should be used to compensate for the weak coupling of the threaded parts of the divided support walls. The use of rings or caps on the outside increased the width of the outside, which could interfere with each other in narrow spaces during surgery.
본 발명은 이런 문제를 해결하기 위해 척추경 나사못의 헤드결합에 있어서 고정 볼트와의 나사산 각도를 이용하여 캡이 필요치 않게 하여 로드와의 간섭을 배제할 수 있도록 하고 헤드의 부피를 줄이고 고정 볼트와 척추경 나사못의 체결작업을 용이하게 함과 동시에 더욱 견고하게 고정될 수 있도록 함으로써 수술시간 지연 등의 비효율적인 측면을 개선할 수 있으며, 궁극적으로 시간적인 측면이나 정확도 측면에서 매우 효과적으로 수행할 수 있도록 한 척추경 나사못을 제공하는데 목적이 있는 것이다.In order to solve the problem, the present invention eliminates the need for a cap by using a thread angle with the fixing bolt in the head coupling of the pedicle screw, thereby eliminating interference with the rod, reducing the volume of the head, and fixing the bolt and the spine. By making the screw fastening easier and fixing more firmly, it is possible to improve the inefficient aspects such as delay of the operation time, and ultimately to perform the spine very effectively in terms of time and accuracy. The purpose is to provide a light screw.
도 1은 본 발명의 구성을 나타낸 분해 사시도1 is an exploded perspective view showing the configuration of the present invention
도 2는 본 발명의 결합상태, 종단면도Figure 2 is a coupled state, longitudinal cross-sectional view of the present invention
도 3은 본 발명의 척추건 나사못과 고정 볼트의 체결상태를 보여주는 단면도Figure 3 is a cross-sectional view showing a fastening state of the spinal tendon screw and the fixing bolt of the present invention
도 4는 본 발명에 따른 척추경 나사못의 설치상태를 보여주는 사시도Figure 4 is a perspective view showing the installation state of the pedicle screw according to the invention
도 5는 종래 척추경 나사못을 나타내는 분해 사시도5 is an exploded perspective view showing a conventional pedicle screw
척추에 일정한 간격으로 나사 결합하여 설치되는 척추경 나사못(10)과 척추경 나사못(10)에 상향 개구부(16)에 로드(11)를 끼우고 이를 고정 볼트(15)로 고정하여 척추경 나사못(10)을 서로 연결하면서 지지되게 하는 것에 있어서 상기 헤드의 나사산(13)과 고정 볼트(15)의 나사산(17)이 결합됨에 있어서 힘의 방향(18)이 내측을 향하게 함으로써 척추경 나사못 헤드(14)가 벌어지는 것을 방지하고 헤드(14)와 로드(11)와 고정 볼트(15)가 더욱 견고하게 고정되는 것을 특징으로 한다.Insert the rod 11 into the upward opening 16 in the pedicle screw 10 and the pedicle screw 10, which are installed by screwing the spine at regular intervals, and fix it with a fixing bolt 15 to fix the pedicle screw ( 10, the pedicle screw head 14 by directing the direction of the force 18 inward when the screw thread 13 of the head and the screw thread 17 of the fixing bolt 15 are coupled to each other so as to be supported while being connected to each other. ) Is prevented from spreading and the head 14 and the rod 11 and the fixing bolt 15 is more firmly fixed.
특히 상기 고정 볼트 나사산(17)과 나사못 헤드의 나사산(13)의 나사산 각도의 체결방식을 특징으로 한다.In particular, the fastening method of the thread angle of the fixed bolt screw thread 17 and the screw thread 13 of the screw head.
이와 같이된 본 발명은 척추에 나사결합으로 설치되어 있는 척추경나사못(10)의 헤드 결합홈(16)에 서로 연결하여 지지되게 하는 로드(11)를 끼운 다음, 고정 볼트(15)를 돌려서 나사못 헤드의 나사산(13)과 고정 볼트(15)를 돌림으로서 힘의 방향이 나사못 헤드의 나사산(13)과 고정 볼트의 나사산(17)의 각도에 의한 반발력으로 화살표(18)와 같이 되게 함으로써 보다 견고하게 고정을 할 수 있게 이루어진다.The present invention as described above is inserted into the rod 11 to be supported by connecting to each other in the head coupling groove 16 of the pedicle screw nail 10 installed by screwing the spine, then turn the fixing bolt 15 screw By turning the thread 13 of the head and the fixing bolt 15, the direction of the force is made stronger as the arrow 18 by the repulsive force by the angle of the thread 13 of the screw head and the thread 17 of the fixing bolt. It can be fixed.
이와 같이 본 발명의 헤드결합구조는 척추경나사못의 헤드결합홈의 나사산과 고정 볼트의 나사산의 각도를 이용하여 별도의 헤드의 벌어짐을 방지한 캡이 필요하지 않을 뿐 아니라 보다 견고하고 쉽고 빠르게 고정할 수 있는 이점이 있다.As described above, the head coupling structure of the present invention does not require a cap that prevents the opening of a separate head by using the angle of the thread of the head coupling groove of the pedicle screw and the thread of the fixing bolt, as well as more firmly, easily and quickly. There is an advantage to this.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2002-0021360U KR200299664Y1 (en) | 2002-07-16 | 2002-07-16 | pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2002-0021360U KR200299664Y1 (en) | 2002-07-16 | 2002-07-16 | pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR200299664Y1 true KR200299664Y1 (en) | 2003-01-06 |
Family
ID=49397944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR20-2002-0021360U Expired - Fee Related KR200299664Y1 (en) | 2002-07-16 | 2002-07-16 | pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200299664Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100427685B1 (en) * | 2002-10-05 | 2004-04-28 | 주식회사 솔고 바이오메디칼 | Fixing apparatus in a vertebra |
-
2002
- 2002-07-16 KR KR20-2002-0021360U patent/KR200299664Y1/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100427685B1 (en) * | 2002-10-05 | 2004-04-28 | 주식회사 솔고 바이오메디칼 | Fixing apparatus in a vertebra |
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