KR100346308B1 - Pedicle screw - Google Patents

Pedicle screw Download PDF

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Publication number
KR100346308B1
KR100346308B1 KR1019990048203A KR19990048203A KR100346308B1 KR 100346308 B1 KR100346308 B1 KR 100346308B1 KR 1019990048203 A KR1019990048203 A KR 1019990048203A KR 19990048203 A KR19990048203 A KR 19990048203A KR 100346308 B1 KR100346308 B1 KR 100346308B1
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KR
South Korea
Prior art keywords
screw
hole
rod
pedicle screw
pedicle
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KR1019990048203A
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Korean (ko)
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KR20000006777A (en
Inventor
김성곤
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김성곤
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Priority to KR1019990048203A priority Critical patent/KR100346308B1/en
Publication of KR20000006777A publication Critical patent/KR20000006777A/en
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Publication of KR100346308B1 publication Critical patent/KR100346308B1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/685Elements to be fitted on the end of screws or wires, e.g. protective caps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/683Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72Intramedullary pins, nails or other devices
    • A61B17/7233Intramedullary pins, nails or other devices with special means of locking the nail to the bone
    • A61B17/725Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor

Abstract

본 발명은 정형외과부분에서 척추수술, 특히 손상된 척추 일부가 인접된 다른 부분에 눌려지거나 압박되지 않도록 상하 길이 방향을 따라 인접된 2개의 척추경을 서로 고정하는 데 사용되는 척추경 나사못에 관한 것으로, 하부에는 나사봉(11)을 형성하고 상부에는 내주면에 나사부(13)를 형성한 대략 U자형 끼움홈(12)을 형성한 통상의 척추경 나사못본체(1)에 있어서, 상기 척추경 나사못본체(1)의 상단 외주면에는 걸림턱(14)을 형성하고, 상기 나사못본체(1)의 내부 바닥에는 로드받침(2)을 걸림링(22)을 개재하여 고정나사(24)로서 끼워 설치하되, 상기 로드받침(2)은 상측에 호형 받침부(23)를 갖는 회동부(21)로 되어 상기 회동부(21)가 걸림링(22)에 의해 걸려 상기 받침부(23)가 유동 가능한 상태로 설치하고, 상기 본체(1) 상단 개구에는 내주면에 상기 걸림턱(14)에 탈/부착 가능하게 끼워지는 걸림돌부(31)를 가지며 중앙에는 관통공(33)을 갖는 고정캡(3)을 끼워 설치하며, 상기 고정캡(3)의 관통공(33)을 통해 하면에 접촉구(41)가 설치되고 상면에는 렌치홈(43)을 형성한 누름구(4)의 나사부(42)가 본체(1)의 나사부(13)에 체결되게 한 것을 특징으로 하는 척추경 나사못을 제공한다.The present invention relates to a pedicle screw used to fix two pedicles adjacent to each other along the longitudinal direction so that spinal surgery in the orthopedic area, in particular, a part of the damaged vertebrae is not pressed or pressed by another adjacent part, In the conventional pedicle screw body (1) formed with a screw rod (11) at the bottom and a substantially U-shaped fitting groove (12) having a screw portion (13) formed at the inner circumferential surface thereof, the pedicle screw body ( In the upper outer peripheral surface of 1) is formed a locking jaw (14), the inner bottom of the screw body (1) is installed by inserting the rod support (2) as a fixing screw 24 via the locking ring 22, The rod support 2 is a pivoting portion 21 having an arc-shaped support portion 23 on the upper side, and the pivoting portion 21 is caught by the locking ring 22 and installed in a state in which the support portion 23 is movable. The locking jaw 14 is formed on an inner circumferential surface of the upper opening of the main body 1. It has a locking projection (31) that can be detachably attached to the installation in the center of the fixing cap (3) having a through hole 33 is installed, through the through hole 33 of the fixing cap (3) on the lower surface The pedicle screw, characterized in that the threaded portion 42 of the pressing hole 4, the contact hole 41 is installed and the upper surface of the pressing hole (4) having a wrench groove 43 is fastened to the threaded portion 13 of the body (1) to provide.

Description

척추경 나사못 {PEDICLE SCREW}Pedicle screw {PEDICLE SCREW}

본 발명은 정형외과부분에서 척추수술에 사용되는 척추경 나사못에 관한 것으로, 특히 손상된 척추 일부가 인접된 다른 부분에 눌려지거나 압박되지 않도록 상하 길이 방향을 따라 인접된 2개의 척추경을 서로 고정하는데 사용되는 척추경 나사못에 관한 것이다.The present invention relates to pedicle screws used in spinal surgery in orthopedic areas, and in particular, to fix two adjacent pedicles along the longitudinal direction so that a part of the damaged vertebrae is not pressed or pressed by another adjacent part. It is about being a pedicle screw.

척추의 일부가 손상된 환자가 그 상태에서 활동을 할 수 없고, 손상정도가 심하지 않아서 활동을 할 수 있다고 하더라도 척추의 손상된 부분이 다른 인접한 부분에 눌려지거나 닿게 됨으로써 통증을 유발하게 되고 치료를 하더라도 회복이 늦어지게 된다.따라서, 척추의 일부가 파손되거나 척추 협착증 화자의 경우 그 손상된 척추부분이 눌려지거나 압박되지 않도록 감압수술 후 불안정해진 척추를 인접한 척추부분에 인공보조물을 사용하여 지지하는 수술이 요구된다.Even if a patient with an injured part of the spine is unable to work in that state and can be active because the injury is not severe enough, the damaged part of the spine will be pressed or touched by another adjacent part, causing pain and recovery even if treated. Therefore, in the case of spinal stenosis or a spinal stenosis narrator, surgery is required to support the unstable vertebrae using an artificial prosthesis on the adjacent vertebrae to prevent the damaged vertebrae from being pressed or compressed.

이 경우에 사용되는 척추지지용 인공보조물은 척추의 손상된 부분 상하측에 배치된 척추경에 각각 나사못을 삽입한 후, 별도의 로드를 이들 나사못들에 의해 고정되게 설치한 것이다.The spinal support prosthesis used in this case is to insert a screw into each of the pedicles arranged above and below the damaged part of the spine, and then install a separate rod to be fixed by these screws.

그러나, 상기 척추수술시 로드를 지지하기 위해 사용되는 종래의 척추경 나사못은 그 구조가 복잡하고 구성부품수가 많아서 수술도중 척추에 대한 설치작업이 까다롭고, 특히 나사못 헤드측에 체결되는 너트 및 로드체결용 볼트가 별개로 분리되어 있는 구조로 되어 있어 조립작업을 별도로 해야 하는 등 조립공수가 늘어나므로 수술시간이 길어질 뿐만 아니라 너트와 볼트는 통상 크기가 작고 분리되어 있으므로 조립작업 중 너트나 볼트를 놓치기 쉬워 수술시야에서 혈액 속에 파묻혀 찾기가 어려운 단점이 있었다.However, the conventional pedicle screw used to support the rod during spinal surgery has a complicated structure and a large number of components, which makes it difficult to install the spine during surgery. In particular, nuts and rods fastened to the screw head side are fastened. As the bolts are separated separately, the assembly time is increased, such as separate assembly work, which increases the operation time. In addition, the nuts and bolts are usually small and separated, so it is easy to miss nuts or bolts during assembly work. It was difficult to find buried in the blood in sight.

즉 종래의 척추경 나사못은, 척추경에 직접 삽입되어 수직방향으로 나사결합 되는 나사봉 상단에 길이방향으로 U자형 홈이 형성된 헤드부를 구비하여 이 헤드부의 U자형 홈에 로드를 안착시킬 수 있게 되어 있으며, 상기 U자형 홈의 상단 내벽에 형성된 나사부에 로드고정용 볼트가 체결되게 함으로써 그 볼트의 하단이 상기 U자형 홈 안에 안착 설치되는 로드를 가압하여 고정해주게 되어 있는 한편, 상기 헤드부의 외측에도 나사를 형성하여 상기 나사부에 별도의 고정릴이 체결되게 함으로써 상기 로드고정용 볼트가 상기 헤드부에 나사 결합될 때 그 헤드부가 양측으로 벌어지는 것을 막을 수 있도록 되어있다.That is, the conventional pedicle screw has a head portion formed with a U-shaped groove in the longitudinal direction on the top of the screw rod inserted directly into the pedicle and screwed in the vertical direction, so that the rod can be seated in the U-shaped groove of the head portion. The rod fixing bolt is fastened to the threaded portion formed on the upper inner wall of the U-shaped groove so that the lower end of the bolt presses and fixes the rod seated and installed in the U-shaped groove. By forming a separate fixing reel is fastened to the screw portion is to prevent the head portion from opening to both sides when the rod fixing bolt is screwed to the head portion.

상기한 바와 같이 종래의 척추경 나사못을 이용하여 척추수술시 척추경을 고정상태로 유지하기 위해 나사못에 로드를 고정체결하기 위해서는 볼트 체결작업 뿐만 아니라 볼트에 대한 고정링 체결작업도 하여야 하므로 열악한 수술조건 및 환경에서의 로드 설치작업에 많은 수의 작업공수가 요구되게 되어 수술시간이 길어지는 단점이 있고, 또한 고정링과 볼트가 별개의 부품으로 분리되어 있으므로 수술작업 도중에 떨어뜨리지 않도록 각별히 신경을 써야하며, 또한 볼트를 나사에 끼워 넣을 때에 제대로 끼워 돌리기 어려운 문제 등 수술외적으로 여러 가지 부분에서 효율적인 수술진행을 방해받게 되는 등의 문제가 있는 것이었다.As described above, in order to fix the rod to the screw in order to maintain the pedicle in a fixed state during the spinal surgery using the conventional pedicle screw, not only the bolt fastening but also the fastening ring for the bolt must be performed. And there is a disadvantage that the operation time is long because a lot of work is required for the rod installation work in the environment and the fixing ring and bolt are separated into separate parts, so pay special attention not to drop during the operation. In addition, there were problems such as the difficulty of screwing the bolt into the screw and preventing the efficient operation in various parts.

따라서, 본 발명의 목적은 정형외과 부문에서 사용되는 종래의 척추경 나사못이 지닌 제반 문제점을 해소하기 위해, 척추수술시 척추경에 보다 간편하게 고정 설치하거나 또는 해체할 수 있도록 하여 척추수술 진행시 수술작업을 보다 신속하고 안전하게 실시할 수 있으며, 척추경 나사못의 부피나 크기를 콤팩트하게 최소화한 척추경 나사못을 제공하는 데 있다.Accordingly, an object of the present invention is to solve the problems with the conventional pedicle screw used in the orthopedic sector, to make it easier to fix or install in the pedicle during spinal surgery surgery operation during spinal surgery progress It can be carried out more quickly and safely, and to provide a pedicle screw which compactly minimizes the volume or size of the pedicle screw.

도 1은 본 발명에 의한 척추경 나사못의 분해사시도이고,1 is an exploded perspective view of a pedicle screw according to the present invention,

도 2는 본 발명에 의한 척추경 나사못의 결합상태를 나타낸 결합단면도이고,Figure 2 is a cross-sectional view showing a coupling state of the pedicle screw according to the present invention,

도 3은 본 발명에 의한 척추경 나사못의 설치사용 상태도이다.Figure 3 is an installation and use state diagram of the pedicle screw according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1: 나사못본체 2: 로드받침 3: 고정캡 4: 누름구1: Screw Body 2: Rod Support 3: Fixing Cap 4: Pressing Hole

11: 나사봉 12: 끼움홈 13,32: 나사부 14: 걸림턱11: threaded rod 12: fitting groove 13,32: threaded portion 14: locking jaw

21: 회동부 22: 걸림링 31: 걸림돌부 41: 접촉구21: rotating part 22: locking ring 31: locking protrusion 41: contact hole

42: 렌치홈42: wrench groove

상기 목적을 달성하기 위해 본 발명의 기술적 수단은, 하부에는 나사봉(11)을 형성하고 상부에는 내주면에 나사부(13)를 형성한 대략 U자형 끼움홈(12)을 형성한 통상의 척추경 나사못본체(1)에 있어서: 상기 척추경 나사못본체(1)의 상단 외주면에는 걸림턱(14)을 형성하고, 상기 나사못본체(1)의 내부 바닥에는 로드받침(2)을 걸림링(22)을 개재하여 고정나사(24)로서 끼워 설치하되, 상기 로드받침(2)은 상측에 호형 받침부(23)를 갖는 회동부(21)로 되어 상기 회동부(21)가 걸림링(22)에 의해 걸려 상기 받침부(23)가 유동 가능한 상태로 설치하고, 상기 본체(1) 상단 개구에는 내주면에 상기 걸림턱(14)에 탈/부착 가능하게 끼워지는 걸림돌부(31)를 가지며 중앙에는 관통공(33)을 갖는 고정캡(3)을 끼워 설치하며, 상기 고정캡(3)의 관통공(33)을 통해 하면에 접촉구(41)가 설치되고 상면에는 렌치홈(43)을 형성한 누름구(4)의 나사부(42)가 본체(1)의 나사부(13)에 체결되게 한 것을 특징으로 한다.In order to achieve the above object, the technical means of the present invention is a conventional pedicle screw forming a substantially U-shaped fitting groove (12) formed with a screw rod (11) at the bottom and a screw portion (13) on the inner circumferential surface at the top. In the main body (1): the locking jaw 14 is formed on the outer peripheral surface of the upper end of the pedicle screw body (1), the inner ring of the screw body (1) is engaged with the rod ring (2) the locking ring (22) Interposed between the fixing screw 24 and the rod support 2 is a rotating part 21 having an arc-shaped support part 23 on the upper side, and the rotating part 21 is locked by the locking ring 22. It is installed in a state in which the supporting portion 23 is movable, and the upper opening of the main body 1 has a locking protrusion 31 fitted on the inner circumferential surface so as to be detachable / attached to the locking jaw 14. The fixing cap (3) having the (33) is inserted into the installation, and the contact hole 41 on the lower surface through the through hole 33 of the fixing cap (3) Value and the upper surface characterized in that one causes the threaded portion 42 of the wrench groove push port 4 to form a 43 fastened to the screw portion 13 of the main body (1).

이하 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명을 용이하게 실시할 수 있을 정도로 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

도 1은 본 발명에 의한 척추경 나사못의 구성을 나타내는 분해사시도이고, 도 2는 본 발명에 의한 척추경 나사못의 결합상태를 나타낸 결합단면도이며, 도 3은 본 발명에 의한 척추경 나사못의 설치 사용상태도로서, 그 구성은 크게 나사못본체(1), 로드받침(2), 고정캡(3) 및 누름구(4)로 이루어진다.Figure 1 is an exploded perspective view showing the configuration of the pedicle screw according to the present invention, Figure 2 is a cross-sectional view showing a coupling state of the pedicle screw according to the present invention, Figure 3 is used to install the pedicle screw according to the present invention As a state diagram, the configuration is largely composed of a screw body (1), a rod support (2), a fixing cap (3) and the pressing hole (4).

상기한 나사못본체(1)는, 하부에는 일정길이의 나사봉(11)을 형성하고 상부에는 척추경의 지지를 위한 별도의 로드(5)가 끼워지는 U자형 끼움홈(12)을 형성한 것으로, 본체(1) 외부면 상단에는 고정캡(3)의 설치를 위한 걸림턱(14)을 돌설함과동시에 끼움홈(12)의 내주면에는 나사부(13)를 형성하고 있다.The screw body 1 is to form a screw rod 11 of a predetermined length in the lower portion and to form a U-shaped fitting groove 12 into which a separate rod 5 is fitted to support the pedicle in the upper portion, At the upper end of the outer surface of the main body 1, the locking jaw 14 for the installation of the fixing cap 3 is protruded, and at the same time, the thread portion 13 is formed on the inner circumferential surface of the fitting groove 12.

상기한 로드받침(2)은, 상기 나사못본체(1)에 형성되는 U자형 끼움홈(12)의 내면바닥에 설치되어 그 상면의 호형으로 되는 받침부(23)에 별도의 로드(5)가 얹혀져 설치되도록 한 것으로, 걸림링(22)내에 구 형태의 회동부(21)가 끼워진 채 상기 걸림링(22)이 본체(1) 외면으로부터 체결되는 고정나사(24)에 의해 본체(1) 내면에 고정 설치되도록 하는 것에 의해 로드받침(2)을 이루는 호형 받침부(23)가 본체(1)내에 유동 가능한 상태로 설치되게 된다.The rod support 2 is installed on the bottom of the inner surface of the U-shaped fitting groove 12 formed in the screw body (1), and a separate rod (5) is provided in the support portion 23 that is an arc of the upper surface thereof. The inner surface of the main body 1 by means of a set screw 24 is fastened from the outer surface of the main body 1 while the locking ring 22 is fitted into the engaging ring 22 with the spherical pivot 21 being fitted. By being fixedly installed in the arc-shaped support 23 forming the rod support 2 is installed in a state capable of flowing in the main body (1).

상기한 고정캡(3)은 상기 나사못본체(1)의 외면에 스냅 결합되어 설치되는 것으로, 이 고정캡(3)의 내주면 상측에는 상기 나사못본체(1) 외주면에 형성된 걸림턱(14)에 대응하여 끼워져 걸리는 걸림돌부(31)를 형성하고 있으며, 상기 내주면 보다 작은 직경으로 되는 관통공(33) 내면을 상기 본체(1) 내주면에 형성된 나사부(13)와 동일 피치경을 갖는 나사부(32)로 형성하여 누름구(4) 외면의 나사부(42)가 체결되도록 하고 있다.The fixing cap 3 is installed by snap coupling to the outer surface of the screw body (1), the upper side of the inner peripheral surface of the fixing cap (3) corresponding to the locking step (14) formed on the outer peripheral surface of the screw body (1) The inner surface of the through hole 33 having a diameter smaller than that of the inner circumferential surface to the threaded portion 32 having the same pitch diameter as that of the threaded portion 13 formed on the inner circumferential surface of the main body 1. The screw portion 42 on the outer surface of the pressing hole 4 is fastened.

상기한 누름구(4)는 외면에 나사부(42)를 형성한 상태에서 하면에는 접촉구(41)가 유동 가능하게 설치되고 상면에는 이 누름구(4)를 회전시켜 진퇴 작동시키기 위한 렌치홈(43)을 형성하여 상기 고정캡(3)의 관통공(33)에 형성된 나사부(32)를 통해 본체(1)의 나사부(13)에 체결되어 로드받침(2)상에 설치되는 로드(5)를 그 하부의 접촉구(41)로 하여금 강하게 협지한 상태를 유지토록 하고 있다.In the state in which the pressing hole 4 is formed with the screw portion 42 on the outer surface, a contact hole 41 is installed to be movable on the lower surface thereof, and a wrench groove for rotating the pressing hole 4 on the upper surface to move forward and backward ( A rod 5 which is formed on the rod support 2 by being fastened to the threaded portion 13 of the main body 1 through the threaded portion 32 formed in the through hole 33 of the fixing cap 3 by forming a 43. The contact hole 41 in the lower portion is kept to hold the state strongly.

상기와 같은 구성으로 되는 본 발명에 의한 척추경 나사못(A)의 실시 사용상태에 대해 설명한다.A practical use state of the pedicle screw A according to the present invention having the above configuration will be described.

먼저 본 발명의 척추경 나사못(A)은 그 재질이 티타늄(Ti)재질로 된 의료 보조물로서, 이는 나사못본체(1) 내부에 로드받침(2)이 설치되고 그 상단에 고정캡(3)이 씌워져 누름구(4)가 부분적으로 체결되게 한 상태에서, 척추의 손상된 부분에 인접된 척추경(6) 마디에 나사못본체(1) 하부의 나사봉(11)을 이용하여 척추경(6)에 대해 대략 수직방향으로 일정깊이의 나사 결합식으로 박아 설치한 상태에서, 별도의 로드(5)를 인접한 척추경(6)에 설치된 양 나사못본체(1)의 상부에 각각 형성되는 U자형 끼움홈(12) 내에 끼운 상태에서 U자형 끼움홈(12) 내주면에 형성된 나사부(13)에 체결된 누름구(4)의 렌치홈(43)을 이용하여 누름구(4)를 회전시켜 조이게 되면, 누름구(4) 저면에 유동 가능하게 설치된 접촉구(41)의 하면(下面)이 본체(1) 내부에 설치된 로드받침(2)의 받침부(23)에 접촉된 로드(5) 상면에 접촉된 상태에서 누름구(4)의 지속적인 체결동작에 의해 로드(5)는 양척추경 나사못(A)에 의해 인접한 척추경(6)을 서로 이어주는 역할을 하게 되어 연결시키고자 하는 서로 인접하는 척추경에 대해 보다 확실한 고정상태를 유지할 수 있게 된다.First, the pedicle screw (A) of the present invention is a medical aid made of titanium (Ti) material, which is a rod support (2) is installed inside the screw body (1) and the fixing cap (3) at the top Covered to the pedicle 6 using a screw rod 11 in the lower part of the main body (1) to the pedicle (6) node adjacent to the damaged part of the spine in a state that the pressing sphere (4) is partially fastened U-shaped fitting grooves each formed on the upper part of both screw bodies 1 installed in the adjacent pedicle 6 in a state of being screwed and installed in a predetermined depth in the vertical direction with respect to 12) in the state of being fitted in the U-shaped fitting groove (12) by using the wrench groove 43 of the pressing hole (4) fastened to the threaded portion 13 formed on the inner circumferential surface of the pressing hole (4) when tightened, (4) The supporting part of the rod support 2 installed in the main body 1 has a lower surface of the contact hole 41 installed on the bottom surface thereof. The rod 5 serves to connect adjacent pedicles 6 to each other by the lumbar pedicle screw A by continuous fastening of the pusher 4 in contact with the upper surface of the rod 5 in contact with the rod 23. It is possible to maintain a more secure fixed state for the pedicle adjacent to each other to be connected.

이때, 로드(5)의 양단을 협지 고정상태로 유지하여 인접하는 척추경(6)을 서로 이어 고정상태로 유지하기 위한 본 발명의 척추경 나사못(A)은 로드(5)를 상하 양측에서 협지하는 로드받침(2)의 받침부(23)와 누름구(4)의 접촉구(41)가 각각 로드받침(2)과 누름구(4)에 대해 유동 가능하게 설치되어 있음으로 인해 상기 로드받침(2)과 누름구(4) 사이에 협지 고정되는 로드(5)의 설치위치가 일정범위 이내에서 가변상태로 되게 되어 수술시 로드(5)와 척추경 나사못(A)에 대한 세팅을 쉽게 할 뿐만 아니라 수술 후 환자의 움직임에 도움을 줄 수 있게 된다.At this time, the pedicle screw (A) of the present invention for maintaining both ends of the rod (5) in the pinching fixed state to maintain the adjacent pedicle (6) next to each other pinching the rod (5) up and down both sides The rod bearings 23 and the contact holes 41 of the pressing holes 4 of the rod bearings 2 are installed to be movable with respect to the rod bearings 2 and the pressing holes 4, respectively. The installation position of the rod (5) which is clamped between the (2) and the pressing hole (4) is to be in a variable state within a certain range to facilitate setting for the rod (5) and pedicle screw (A) during surgery In addition, the patient's movement after surgery can be helped.

상기 구성에 있어서, 본 발명의 척추경 나사못(A)을 티타늄재로 하며, 또한 로드받침(2)과 누름구(4)에 설치되는 받침부(23)와 접촉구(41)를 유동 가능하게 설치한 것을 예로 하여 설명하였으나 반드시 이에 한정하는 것은 아니며, 재질은 티타늄이외에 동일한 작용효과를 갖는 것이면 다른 재질을 사용하여도 무방하며, 역시 상기 받침부(23)와 접촉구(41) 역시도 반드시 유동 상태가 아닌 고정상태로 구성하여 로드(5)를 협지 고정하여도 무방하다.In the above configuration, the pedicle screw A of the present invention is made of titanium, and the support 23 and the contact hole 41 provided on the rod support 2 and the pressing hole 4 are movable. Although the installation has been described as an example, the present invention is not necessarily limited thereto. The material may be any other material as long as it has the same effect as that of titanium, and the support part 23 and the contact hole 41 are also necessarily in a flow state. The rod 5 may be clamped by a fixed state.

이상에서와 같이 본 발명은 비록 상기의 실시예에 한하여 설명하였지만 반드시 여기에만 한정되는 것은 아니며 본 발명의 범주와 사상을 벗어나지 않는 범위 내에서 다양한 변형실시가 가능함은 물론이다.As described above, although the present invention has been described with reference to the above embodiments, it is not necessarily limited thereto, and various modifications may be made without departing from the scope and spirit of the present invention.

따라서, 본 발명에서는 본 발명의 척추경 나사못에 의하면, 나사못본체에 누름구가 일체로 부착된 상태에서 척추경에 대한 나사못 삽입작업이 이루어 질 수 있게 함으로써 서로 인접하는 척추경의 고정을 위한 나사못 시술작업이 보다 신속하고 간편하게 이루어 질 수 있도록 함과 동시에 나사못본체에 대한 별도의 누름구 체결작업이 요구되지 않고 나사못본체와 누름구가 일체로 연결된 상태로 시술되게 되므로 수술작업 도중에 누름구가 체내에 떨어지게 되는 등의 문제를 해결할 수 있게 되는 등 척추경 고정수술작업의 효율을 높여 양질의 의료서비스를 제공할 수 있게 되는 유용한 발명이다.Therefore, in the present invention, according to the pedicle screw of the present invention, the screw screw operation for fixing the pedicle adjacent to each other by allowing the screw insertion work for the pedicle in the state that the pressing sphere is integrally attached to the screw body At the same time, it is possible to make this process more quickly and easily, and it does not require a separate press fitting operation for the screw body, and the screw body and the pressing hole are performed in a state where the screw body is integrally connected. It is a useful invention that can provide high quality medical services by increasing the efficiency of pedicle fixation surgery such as being able to solve such problems.

Claims (4)

하부에는 나사봉(11)을 형성하고 상부에는 내주면에 나사부(13)를 형성한 대략 U자형 끼움홈(12)을 형성한 통상의 척추경 나사못본체(1)에 있어서:In a conventional pedicle screw body (1) having a screw rod (11) at the bottom and a substantially U-shaped fitting groove (12) having a thread (13) at the inner circumferential surface at the top: 상기 척추경 나사못본체(1)의 상단 외주면에는 걸림턱(14)을 형성하고, 상기 나사못본체(1)의 내부 바닥에는 로드받침(2)을 걸림링(22)을 개재하여 고정나사(24)로서 끼워 설치하되, 상기 로드받침(2)은 상측에 호형 받침부(23)를 갖는 회동부(21)로 되어 상기 회동부(21)가 걸림링(22)에 의해 걸려 상기 받침부(23)가 유동 가능한 상태로 설치하고, 상기 본체(1) 상단 개구에는 내주면에 상기 걸림턱(14)에 탈/부착 가능하게 끼워지는 걸림돌부(31)를 가지며 중앙에는 관통공(33)을 갖는 고정캡(3)을 끼워 설치하며, 상기 고정캡(3)의 관통공(33)을 통해 하면에 접촉구(41)가 설치되고 상면에는 렌치홈(43)을 형성한 누름구(4)의 나사부(42)가 본체(1)의 나사부(13)에 체결되게 한 것을 특징으로 하는 척추경 나사못.A locking jaw 14 is formed on the upper outer circumferential surface of the pedicle screw main body 1, and a fixing screw 24 is provided on the inner bottom of the screw main body 1 via a locking ring 22. The rod support 2 is installed as a rotating part 21 having an arc-shaped support part 23 on the upper side thereof, and the rotating part 21 is caught by the locking ring 22. Is installed in a flowable state, the upper opening of the main body (1) has a locking projection (31) which is fitted on the inner peripheral surface to be detachable / attachable to the locking jaw 14, the fixing cap having a through hole 33 in the center (3) is inserted and installed, the contact hole 41 is installed on the lower surface through the through hole 33 of the fixing cap (3) and the screw portion of the pressing hole (4) formed a wrench groove 43 on the upper surface ( Pedicle screw, characterized in that 42 is fastened to the screw portion 13 of the main body (1). 삭제delete 청구항 1에 있어서,The method according to claim 1, 상기 고정캡(3) 중앙의 관통공(33) 내주면에는 상기 나사못본체(1) 내주면에 형성된 나사부(13)와 동일 피치경을 갖는 나사부(32)를 형성한 것을 특징으로 하는척추경 나사못.Spine screw screw, characterized in that formed in the inner circumferential surface of the through hole (33) in the center of the fixing cap (3) has a screw portion (32) having the same pitch diameter as the screw portion (13) formed on the inner circumferential surface of the screw body (1). 청구항 1에 있어서,The method according to claim 1, 상기 접촉구(41)는 누름구(4) 하면에 유동 가능하게 설치되는 것을 특징으로 하는 척추경 나사못.The contact hole 41 is pedicle screw, characterized in that the flow is installed on the lower surface (4).
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KR100937027B1 (en) 2009-06-25 2010-01-15 주식회사 디오메디칼 Spinal fixation device reinforced binding effect
WO2010150999A2 (en) * 2009-06-25 2010-12-29 주식회사 디오메디칼 Spinal fixation apparatus with reinforced binding force
WO2010150999A3 (en) * 2009-06-25 2011-03-31 주식회사 디오메디칼 Spinal fixation apparatus with reinforced binding force

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