KR100371308B1 - a prosthetic implant for spinal interbody fusion and a inserting apparatus thereof - Google Patents

a prosthetic implant for spinal interbody fusion and a inserting apparatus thereof Download PDF

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Publication number
KR100371308B1
KR100371308B1 KR10-2000-0050009A KR20000050009A KR100371308B1 KR 100371308 B1 KR100371308 B1 KR 100371308B1 KR 20000050009 A KR20000050009 A KR 20000050009A KR 100371308 B1 KR100371308 B1 KR 100371308B1
Authority
KR
South Korea
Prior art keywords
rod
fusion
intervertebral
insertion space
prosthetic
Prior art date
Application number
KR10-2000-0050009A
Other languages
Korean (ko)
Other versions
KR20020016980A (en
Inventor
구자교
김영수
한정수
김병수
김정성
Original Assignee
구자교
한정수
김영수
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 구자교, 한정수, 김영수 filed Critical 구자교
Priority to KR10-2000-0050009A priority Critical patent/KR100371308B1/en
Priority to AU2001282645A priority patent/AU2001282645A1/en
Priority to PCT/KR2001/001446 priority patent/WO2002017823A1/en
Publication of KR20020016980A publication Critical patent/KR20020016980A/en
Application granted granted Critical
Publication of KR100371308B1 publication Critical patent/KR100371308B1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • AHUMAN NECESSITIES
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    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
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    • A61F2/3094Designing or manufacturing processes
    • A61F2/30965Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
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    • A61F2/00Filters 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
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    • A61F2/447Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
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    • A61F2/00Filters 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
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    • A61F2/00Filters 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
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    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
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    • A61F2/00Filters 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
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    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30471Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
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    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30492Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking pin
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    • A61F2002/30535Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30537Special structural features of bone or joint prostheses not otherwise provided for adjustable
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Abstract

본 발명에 의한 척추체간 유합용 보철 삽입물은, 인접 추체 간격 내에 형성시킨 소정의 삽입공간에 삽입하여 추체간 유합술에 사용되는 보철 삽입물에 있어서, 그 내부에 길이방향으로 내부통로(38)(38')가 형성되고, 상기 삽입공간의 내면과 접촉하는 외주면에는 다수개의 걸림돌기(44)가 형성되며, 상기 내부통로와 연통된 다수개의 통공(42)(42')이 형성되며, 길이방향으로 소정의 곡률로 구부려진 다각기둥 형상의 몸체(32)와; 상기 몸체의 전방측에 연결되어 상기 삽입공간으로 최초로 진입하는 진입전방부(34)와; 상기 몸체의 후방측에 연결되어 시술시에 삽입장치가 결합되도록 결합부가 형성된 후방부(36)로 이루어 지고, 보철 삽입물의 삽입장치는, 그 내부에 길이방향으로 암나사부가 형성된 외측로드(60)와; 상기 외측로드의 내부에 나사결합된 내측로드(64)와; 그 일측은 상기 나사홀과 나사결합되고 그 타측은 상기 내측로드에 결합되어 상기 내측로드와 외측로드의 작동에 따라 요동하는 요동부재(62)로 이루어져 있으므로, 척추의 추간판의 한쪽만 절개하여 삽입할 수 있고 고정 및 교정기능을 충분히 가지도록 하므로써 환자의 시술부위 및 시술시간을 최소화하며 시술을 용이하게 할 수 있고, 삽입공간에의 진입이 보다 원활하면서도, 최종 고정위치가 안정될 수 있다.The intervertebral fusion prosthetic insert according to the present invention is a prosthetic insert used for intervertebral fusion by inserting into a predetermined insertion space formed in an adjacent vertebral spacing, wherein the inner passage 38, 38 ′ is longitudinally therein. ) Is formed, and a plurality of engaging projections 44 are formed on the outer circumferential surface in contact with the inner surface of the insertion space, and a plurality of through holes 42 and 42 'communicating with the inner passage are formed in a predetermined length direction. A polygonal pillar-shaped body 32 which is bent at a curvature of; An entrance front part 34 connected to the front side of the body to initially enter the insertion space; It is connected to the rear side of the body is made of a rear portion (36) having a coupling portion formed so that the insertion device is coupled during the procedure, the insertion device of the prosthetic insert, the outer rod 60 and the female thread formed in the longitudinal direction therein and ; An inner rod 64 screwed into the outer rod; One side thereof is screwed with the screw hole and the other side is coupled to the inner rod is composed of a rocking member 62 that swings in accordance with the operation of the inner rod and the outer rod, so that only one side of the intervertebral disc of the spine can be inserted It is possible to minimize the surgical site and the time of the patient by making it enough to have a fixed and corrective function, and to facilitate the procedure, while entering the insertion space more smoothly, the final fixed position can be stabilized.

Description

척추체간 유합용 보철 삽입물 및 그 삽입장치{a prosthetic implant for spinal interbody fusion and a inserting apparatus thereof}Prosthetic implant for spinal interbody fusion and a inserting apparatus

본 발명은 추체 유합술에 사용되는 척추체간 유합용 보철 삽입물 및 보철 삽입물의 삽입장치에 관한 것이다.The present invention relates to an intervertebral fusion prosthetic implant and an insertion device of a prosthetic implant used in vertebral fusion.

사람의 척추는 척추골과 그 사이의 섬유 연골성 추간판 (fibrocartilaginous disc : 흔히 디스크라고 한다)으로 이루어져 있고, 두개골부터 골반골까지 강한 인대와 근육으로 강화되어 신체를 지지하며 평형을 유지한다.The human spine consists of the vertebrae and fibrocartilaginous discs (sometimes called discs) between them, which are strengthened by strong ligaments and muscles from the skull to the pelvis, supporting the body and maintaining equilibrium.

도1은 사람의 척추의 후측 사시도(편의상 추간판을 분리한 상태를 그린 도면)이고, 도2는 사람의 척추의 평면도이다. 도시한 바와 같이, 척추골은, 척추체(vertebral body)(2), 척추체 뒷부분의 극돌기(4), 양 옆으로 형성된 횡돌기(6)와 상, 하 관절돌기(8)(8') 및, 척추의 전방부와 후방부를 이어주는 척추경(10)으로 이루어져 있으며, 상기 추간판((Intervertebral Disc; 흔히 '디스크'라고 불리는 부분)(12)은 섬유륜(anulus fibrosus)과 수핵(nucleus pulposus)으로 구성되어 있으며, 위치에 따라 모양과 크기가 각각 다르다. 성인의 추간판에는 혈관이 없기 때문에, 그 안에 있는 세포들은 추체 골단 판 중앙의 구멍을 통한 확산에 의해 영양소를 공급받는데, 추체의 움직임과 무게가 확산에 도움을 준다.Fig. 1 is a rear perspective view of the human spine (a diagram showing a state where the intervertebral disc is separated for convenience), and Fig. 2 is a plan view of the spine of a person. As shown, the vertebrae include the vertebral body 2, the spinous process 4 at the back of the vertebral body, the transverse protrusions 6 formed on both sides and the upper and lower articular processes 8 and 8 ', and The intervertebral disc (Intervertebral Disc; commonly referred to as 'disc') 12 is composed of an anulus fibrosus and a nucleus pulposus. The location and size of the adult intervertebral discs do not have blood vessels, so the cells in them are fed by diffusion through the hole in the center of the vertebral epiphyseal plate. give.

한편, 일반적으로 하부허리의 요통은 요추 디스크의 파열 또는 악화에 의해 발생한다. 좌골신경통은 척추들 사이의 손상된 디스크에 의해 척추 신경근의 압박에 의해 야기되고 하부 요통은 디스크의 파괴와 손상된 불안정한 척추 관절을 통하여 몸무게의 대부분이 지탱됨으로써 발생한다. 이러한 좌골신경통과 하부요통의 치료는 일반적으로, 1) 척추 신경을 압박하는 디스크 부분을 제거하여, 좌골 신경통, 다리 통증을 제거하는 방법, 2) 후기 융합에 의한 디스크 절제법, 3) 전방 내부몸체 융합에 의한 디스크 절제, 4) 후방 허리 척추사이 융합에 의한 디스크 절제 등이 이용된다.On the other hand, lower back pain is usually caused by rupture or deterioration of the lumbar disc. Sciatica is caused by compression of the spinal nerve roots by damaged discs between the vertebrae, and lower back pain is caused by most of the weight being sustained through the destruction of the disc and the damaged unstable vertebral joint. The treatment of sciatica and lower back pain generally includes: 1) removing sciatica, sciatica and leg pain, 2) disc ablation by late fusion, and 3) anterior body. Disc ablation by fusion, 4) disc ablation by fusion between posterior lumbar vertebrae, and the like.

이러한 수술법에 있어서, 퇴화 디스크의 고통을 경감시키기 위해 척추 몸체 사이에 단단한 골의 결합 물체를 사용하여 디스크가 더욱 붕괴되는 것을 방지한다. 이 때, 자신의 골은 많은 양을 얻기가 힘들기 때문에, 보통 동종의 이식골이 많이사용되나, 이러한 이식된 골은 성장시간이 오래 걸리고, 이들 자체는 적당한 부하를 운반하는데 충분하지 않으며, 고정시간이 길며, 환자 자신의 골로 수술한 것보다 약 3배의 실패율을 가진다.In this procedure, a rigid bone joint between the vertebral bodies is used to alleviate the pain of the degenerative disc to further prevent the disc from collapsing. At this time, because their bones are difficult to obtain a large amount, usually the same type of bone graft is used a lot, but these transplanted bones take a long time to grow, and they themselves are not enough to carry a suitable load, fixed time This is long and has about three times the failure rate than surgery on the patient's own bone.

이에, 미국 특허 제4,743,256호는 디스크의 거리를 유지하는 영구적 중량지지 지주를 제공하고, 척추에 이식체를 통합시키기 위해 척추의 예정위치에 자리잡고, 골의 안쪽 성장을 촉진하는 표면을 가진 단단한 이식체와 인접한 척추 사이에 디스크의 거리를 유지하여, 척추 디스크의 퇴화 또는 파열에 의해 야기되는 척추 등의 고통을 제거하기 위한 개선된 외과적 방법을 설명하고 있다. 이 이식체는 예정 위치에의 삽입을 용이하게 하는 공구 수용 단부면을 가진 단단한 이식체로, 골의 내부 성장을 향상시키도록 외주상에 거친 표면의 기하학적 모양을 가진다. 이 예정위치는 인접 척추의 대향면 내에 채널을 형성하기 위해, 인접 척추의 후기 단부 내에 내장된 돌출 톱니를 가진 드릴 가이드에 의해 둘러싸인 드릴에 의해 형성된다. 이 채널은 척추의 전방 측면을 통하여 완전히 연장되지 않는 것이 좋다.Thus, US Pat. No. 4,743,256 provides a permanent weight support strut that maintains the distance of the disc, is located in a predetermined position of the spine to integrate the implant into the spine, and has a rigid graft with a surface that promotes internal growth of the bone. Improved surgical methods have been described to maintain the distance of the disc between the sieve and the adjacent vertebrae to eliminate pain such as the spine caused by degeneration or rupture of the vertebral disc. The implant is a rigid implant with a tool receiving end face that facilitates insertion into a predetermined position and has a rough surface geometry on the outer periphery to enhance internal growth of the bone. This predetermined position is formed by a drill surrounded by a drill guide having projecting teeth embedded in the later end of the adjacent spine to form a channel in the opposite surface of the adjacent spine. This channel preferably does not extend completely through the anterior side of the spine.

또한, 상기 미국특허와 동일 출원인에 의한 대한민국 특허공보 제92-3405호에서는 상기 방법에 사용되는 보철 삽입물을 보다 개선한 것을 개시하고 있다. 이에 의하면, 인접 척추 사이에 디스크 거리와 인접한 척추의 면에 대향된 예정 지역을 횡단하는 척추 칼럼용 보철에 있어서, 각각의 보철 삽입물은 척추로부터 골의 내부성장을 용이하게 하기 위해, 상기 예정된 지역을 상호 로킹하는 거친 표면을 가지고, 각각의 보철 삽입물은 예정된 지역에 보철 삽입물을 단부 방향으로의 삽입을 용이하게 하기 위해 공구상에 보철 삽입물을 단부 방향으로 고정 장착하기 위해삽입물의 내부로 연장된 공구수용 수단과 단부면을 가지고, 인접한 척추 사이에서 요구되는 디스크 거리를 유지하고, 인접한 척추의 예정된 지역에 자리잡고 있는 횡단지주를 형성하기 위해 크기와 형상이 정해진 나란한 불활성의 강성 삽입물을 구비하고 있다. 도 3은 종래의 보철 삽입물의 일예를 보인 사시도이다.In addition, Korean Patent Publication No. 92-3405 by the same applicant as the US patent discloses a further improvement of the prosthetic insert used in the method. According to this, in a prosthetic column for a vertebral column that traverses a predetermined area opposite the disk distance between the adjacent vertebrae and the face of the adjacent vertebrae, each prosthetic insert is adapted to facilitate the internal growth of the bone from the vertebrae. Having a coarse surface that locks together, each prosthetic insert extends into the interior of the insert for fixedly mounting the prosthetic insert on the tool in an end direction to facilitate insertion of the prosthetic insert in the intended area in an end direction; It has an inert, rigid insert with side and end faces, sized and shaped to maintain the required disc distance between adjacent vertebrae, and to form a transverse column located in a predetermined area of the adjacent vertebrae. 3 is a perspective view showing an example of a conventional prosthetic insert.

이 삽입물(20)은 나사가 형성된 디스크간 구멍에 나사결합되는 것이 아니라, 추체간격 내 형성시킨 삽입공간에 직접 삽입되는 형식으로 사용된다. 즉, 척추 자체를 지주로 지지하기 위해, 삽입공간에 공구를 이용하여 삽입물을 삽입하고, 삽입물을 이동시키지 않고, 삽입물로부터 공구를 제거하여 표면 근처의 척추로부터 골의 내부 성장을 용이하게 하는 작용을 한다. 이 때, 일반적으로 삽입물의 외주면에는 돌기(22)를 형성시킴으로서, 추체간격 내에서 삽입물이 고정될 수 있도록 한다.The insert 20 is not screwed into the inter-disc hole formed with the screw, but is used in the form of being directly inserted into the insertion space formed in the vertebral spacing. In other words, in order to support the spine itself as a strut, the insert is inserted into the insertion space using a tool, and the tool is removed from the insert without moving the insert to facilitate internal growth of the bone from the spine near the surface. do. In this case, in general, the protrusion 22 is formed on the outer circumferential surface of the insert so that the insert can be fixed within the vertebral space.

그런데, 이와 같은 보철 삽입물(20)을 삽입공간에 삽입하여 행하는 퇴행성 추간판 질환(degenerative disc disease)수술시에 한쪽 다리에만 통증이 있는 경우에도 도4에서 화살표(A, A')로 도시한 바와 같이 추간판(디스크)(12)의 양쪽을 절개하여 상기 보철 삽입물(20)을 각각 삽입하여 시술하였다.However, even when there is pain in only one leg during degenerative disc disease surgery performed by inserting such a prosthetic insert 20 into the insertion space, as shown by arrows A and A 'in FIG. 4. Both sides of the intervertebral disc (disc) 12 were cut and inserted into the prosthetic inserts 20, respectively.

이러한 시술은 수술 전 통증이 없던 쪽의 신경근까지도 벌려야 하므로, 척수(24) 및 척추신경(26)에 영향을 주어 통증을 유발하게 된다는 문제점이 있었다.This procedure has to open the nerve roots of the side before the pain, there was a problem that affects the spinal cord 24 and the spinal nerve 26 to cause pain.

또한 종래의 보철 삽입물(20)은 삽입공간으로 최초로 진입하는 순간, 추체간삽입공간을 불필요하게 파괴하거나, 파괴되지 않은 경우에도 추체 간 삽입동작이 원활하게 이루어 지지 않을 경우 최종위치에서의 고정이 불완전하게 될 수도 있고, 삽입자체가 용이하지 않을 수도 있다는 문제점이 있었다. 즉, 도3에 도시한 바와 같은 종래의 보철 삽입물(20) 들은 그 진입부인 전방 단부가 후방의 몸체와 거의 평행하고 동일한 폭 및 높이로 이루어져 있으므로 상기 문제점을 피할 수가 없었다.In addition, the conventional prosthetic insert 20 is incompletely fixed at the final position when the intervertebral insertion space is unnecessarily destroyed at the first entry into the insertion space, or when the intervertebral insertion motion is not made smoothly even if it is not destroyed. There may be a problem that the insertion itself may not be easy. That is, the conventional prosthetic inserts 20 as shown in Fig. 3 cannot avoid the above problems because the front end, which is the entrance portion thereof, is substantially parallel to the rear body and has the same width and height.

따라서, 본 발명은 상기 문제점을 해결하기 위해 이루어 진 것으로서, 척추의 추간판의 한쪽만 절개하여 삽입할 수 있고 고정 및 교정기능을 충분히 가지도록 하므로써 환자의 시술부위 및 시술시간을 최소화하며 시술을 용이하게 할 수 있는 보철 삽입물 및 보철 삽입물의 삽입장치를 제공하는데 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, by inserting only one side of the intervertebral disc of the spine and inserting it enough to have a fixed and corrective function to minimize the surgical site and the procedure time of the patient and facilitate the procedure It is an object of the present invention to provide a prosthetic insert and an insertion device of a prosthetic insert.

또한, 본 발명은 삽입공간에의 진입이 보다 원활하면서도, 최종 고정위치가 안정될 수 있는 구조의 보철 삽입물을 제공하는 데 그 목적이 있다.It is also an object of the present invention to provide a prosthetic insert having a structure in which a final fixation position can be stabilized while entering an insertion space more smoothly.

도 1은 사람의 척추의 후측 사시도(추간판을 분리한 상태도),1 is a rear perspective view of a human spine (a diagram of an intervertebral disc removed),

도 2는 사람의 척추의 평면도,2 is a top view of the spine of a person,

도 3은 종래 척추체간 유합용 보철 삽입물을 나타내는 사시도,3 is a perspective view showing a conventional intervertebral fusion prosthesis insert,

도 4는 종래 척추체간 유합용 보철 삽입물을 삽입하는 상태를 보인 개략도,Figure 4 is a schematic view showing a state of inserting a conventional intervertebral fusion prosthesis insert,

도 5는 본 발명에 의한 척추체간 유합용 보철 삽입물을 나타내는 사시도,5 is a perspective view showing a prosthetic intervertebral fusion prosthesis according to the present invention,

도 6은 본 발명에 의한 척추체간 유합용 보철 삽입물의 다른 예를 나타내는 사시도,6 is a perspective view showing another example of the intervertebral fusion prosthetic insert according to the present invention;

도 7은 본 발명에 의한 척추체간 유합용 보철 삽입물의 또 다른 실시예를 나타내는 사시도.Figure 7 is a perspective view showing another embodiment of the intervertebral fusion prosthetic insert according to the present invention.

도 8은 본 발명에 의한 척추체간 유합용 보철 삽입물의 또 다른 실시예를 나타내는 사시도.Figure 8 is a perspective view showing another embodiment of the intervertebral fusion prosthetic implant according to the present invention.

도 9는 본 발명에 의한 척추체간 유합용 보철 삽입물의 삽입장치의 일실시예를 나타내는 분해 사시도,Figure 9 is an exploded perspective view showing an embodiment of the insertion device of the intervertebral fusion prosthesis integration according to the present invention,

도 10은 도9의 삽입장치로 보철 삽입물을 삽입공간에 삽입하는 상태도,FIG. 10 is a state diagram of inserting a prosthetic insert into an insertion space with the insertion device of FIG. 9; FIG.

도 11은 본 발명에 의한 척추체간 유합용 보철 삽입물의 삽입장치의 다른 실시예를 나타내는 분해사시도,Figure 11 is an exploded perspective view showing another embodiment of the insertion device of the intervertebral fusion prosthesis integration according to the present invention,

도 12는 도11의 삽입장치의 작용상태도,12 is an operation state diagram of the insertion apparatus of FIG.

도 13은 도12의 작용상태도에서 외측로드를 분리한 상태로 내부를 나타낸 작용상태도이다.FIG. 13 is an operating state diagram showing the inside with the outer rod separated from the operating state diagram of FIG.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

30 : 보철 삽입물 32 : 몸체30: prosthetic insert 32: body

34 : 진입전방부 36 : 후방부34: front entrance 36: rear

38, 38' : 내부통로 40 : 격벽부38, 38 ': Internal passage 40: Bulkhead

42, 42' : 통공 44 : 걸림돌기42, 42 ': Through hole 44: Blocking protrusion

46 : 나사홀 48, 48' : 트임부46: screw hole 48, 48 ': trimming part

60 : 외측로드 62 : 요동부재60: outer rod 62: rocking member

64 : 내측로드 66 : 핀64: inner rod 66: pin

본 발명에 의한 척추체간 유합용 보철 삽입물는, 인접 추체 간격 내에 형성시킨 소정의 삽입공간에 삽입함으로써, 추간간격을 복원 및 유지하면서 전위를 방지하고 골유합을 충족시키는 추체간 유합술에 사용되는 보철 삽입물에 있어서, 그 내부에 길이방향으로 내부통로가 형성되고, 상기 삽입공간의 내면과 접촉하는 외주면에는 다수개의 걸림돌기가 형성되며, 상기 내부통로와 연통된 다수개의 통공이 형성되며, 길이방향으로 소정의 곡률로 구부려진 다각기둥 형상의 몸체와; 상기 몸체의 전방측에 연결되어 상기 삽입공간으로 최초로 진입하는 진입전방부와; 상기몸체의 후방측에 연결되어 시술시에 삽입장치가 결합되도록 결합부가 형성된 후방부로 이루어진 것을 특징으로 한다.The intervertebral fusion prosthesis insert according to the present invention is inserted into a predetermined insertion space formed in an adjacent vertebral space, thereby restoring and maintaining the intervertebral spacing, thereby preventing dislocation and satisfying bone union. The inner passage is formed in the longitudinal direction therein, the outer circumferential surface in contact with the inner surface of the insertion space is formed with a plurality of locking projections, a plurality of through holes in communication with the inner passage is formed, with a predetermined curvature in the longitudinal direction A curved polygonal pillar-shaped body; An entrance front part connected to the front side of the body to initially enter the insertion space; Is connected to the rear side of the body is characterized in that consisting of a rear portion formed with a coupling portion is coupled to the insertion device during the procedure.

상기 진입전방부는, 일측은 상기 몸체의 외주면에 일체로 연결되고, 타측은 전방을 향해 외주 둘레가 점차로 좁아져 있는 것이 바람직하다.The entrance front portion, one side is integrally connected to the outer circumferential surface of the body, the other side is preferably the outer circumference gradually narrowed toward the front.

상기 몸체는 다수개로 분할 가능케 되어 있을 수도 있다. 이때, 몸체는 두개로 분할되어 있는 것이 바람직하다.The body may be divided into a plurality. At this time, the body is preferably divided into two.

그리고, 상기 몸체의 측면에는 척추 추체간 장착시 상하방향으로 탄성을 부여하여 보철삽입물과 추체간의 골유합을 촉진하고 충격을 흡수하게 하는 트임부가 형성되어 있는 것이 바람직하다.In addition, the side of the body is preferably provided with a trim portion to impart elasticity in the vertical direction when the intervertebral vertebrae is mounted to promote bone union between the prosthetic insert and the vertebral body and absorb shock.

본 발명에 의한 척추체간 유합용 보철 삽입물의 삽입장치는, 후방부에 나사홀이 형성된 보철 삽입물에 있어서, 그 내부에 길이방향으로 암나사부가 형성된 외측로드와; 상기 외측로드의 내부에 나사결합된 내측로드와; 그 일측은 상기 나사홀과 나사결합되고 그 타측은 상기 내측로드에 결합되어 상기 내측로드와 외측로드의 작동에 따라 요동하는 요동부재로 이루어 진 것을 특징으로 한다.An insertion device of the intervertebral fusion prosthesis insert according to the present invention includes a prosthetic insert having a screw hole at a rear portion thereof, the outer rod having a female screw portion formed in a longitudinal direction therein; An inner rod screwed into the outer rod; One side thereof is screwed with the screw hole and the other side is coupled to the inner rod is characterized in that made of a rocking member swinging in accordance with the operation of the inner rod and the outer rod.

상기 요동부재는 베이스부와 이 베이스부에서 돌출하여 상기 결합부에 결합되는 나사부로 이루어져 있되, 상기 베이스부의 일단은 상기 외측로드의 단부에 힌지 결합되어 있고 상기 베이스부의 타단에는 요동로드의 일단이 힌지결합되어 있으며, 상기 요동로드의 타단은 상기 내측로드의 단부에 그 일단이 고정된 고정로드의 타단에 힌지결합된 구조로 되어 있을 수도 있다.The rocking member includes a base portion and a screw portion protruding from the base portion and coupled to the coupling portion, wherein one end of the base portion is hinged to an end of the outer rod, and one end of the rocking rod is hinged to the other end of the base portion. Is coupled, the other end of the swing rod may be of a structure hinged to the other end of the fixed rod is fixed to one end of the inner rod end.

이하, 첨부된 도면을 참조로 하여, 본 발명에 의한 척추체간 유합용 보철 삽입물 및 보철 삽입물의 삽입장치를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, it will be described in detail the intervertebral fusion interstitial prosthetic insert and the insertion device of the prosthetic insert.

도 5는 본 발명의 척추체간 유합용 보철 삽입물의 일예를 보인 사시도이다. 도시한 바와 같이, 보철 삽입물(30)는, 길이방향으로 소정의 곡률로 구부려진 사각기둥 형상의 몸체(32)와, 상기 몸체(32)의 전방측에 연결된 진입전방부(34)와, 상기 몸체(32)의 후방측에 연결된 후방부(36)로 이루어져 있다.5 is a perspective view showing an example of the intervertebral fusion prosthetic implant of the present invention. As shown, the prosthetic insert 30 includes a body having a rectangular columnar shape bent at a predetermined curvature in the longitudinal direction, an entrance front part 34 connected to the front side of the body 32, and It consists of a rear portion 36 connected to the rear side of the body 32.

상기 몸체(32)의 내부에는 길이방향으로 내부통로가 형성되어 있다. 이 내부 통로는 중간의 격벽부(40)에 의해 두개의 통로(38)(38')로 나누어져 있다. 몸체(32)의 좌우측에는 상기 내부 통로(38)(38')에 연통된 다수의 통공(42)(42')이 형성되어 있다. 상기 내부 통로(38)(38')에는 보철 삽입물을 삽입공간에 삽입할 때에 상기 통공(42)(42')들과 함께 골 성장 물질을 충전하여, 추체간 골 조직의 성장을 활성화하는 역활을 하게 한다. 이때, 골 성장 물질은 추체 간격 내에 보철 삽입물이 삽입된 후에도 어느 정도 충전되지만, 보통은 미리 상기 내부통로에 어느 정도 충전한 후 사용하는 것이 바람직하다.An interior passage is formed in the longitudinal direction of the body 32. This inner passage is divided into two passages 38 and 38 'by an intermediate partition 40. As shown in FIG. On the left and right sides of the body 32, a plurality of through holes 42 and 42 'communicating with the inner passages 38 and 38' are formed. The inner passages 38 and 38 ′ fill bone growth material with the through holes 42 and 42 ′ when the prosthetic insert is inserted into the insertion space, thereby activating the growth of intervertebral bone tissue. Let's do it. At this time, the bone growth material is filled to some extent even after the prosthetic insert is inserted into the vertebral interval, but it is usually preferable to use after filling the inner passage to some extent.

상기 통공(42)(42')은 방사선 사진의 판독을 용이하게 하는 효과도 있다.The through holes 42 and 42 'also have the effect of facilitating the reading of radiographs.

상기 몸체(32)의 상, 하면에는 삽입공간의 내면과 접촉하는 다수개의 걸림 돌기(44)가 형성되어 있다. 상기 걸림돌기(44)의 전방측은 완만한 경사면으로 되어 있고 후방측은 가파른 경사면(또는 수직면)으로 되어 있다. 따라서, 보철 삽입물을 삽입공간에 삽입할 시에는 완만한 경사면을 따라 용이하게 삽입되고 삽입된 후에는 가파른 경사면(또는 수직면)에 걸려 보철 삽입물이 잘 빠지지 않게 된다.On the upper and lower surfaces of the body 32, a plurality of engaging projections 44 are formed in contact with the inner surface of the insertion space. The front side of the locking projection 44 is a gentle inclined surface, and the rear side is a steep inclined surface (or vertical surface). Accordingly, when the prosthetic insert is inserted into the insertion space, the prosthetic insert is easily inserted along a gentle slope and after being inserted into the steep inclined surface (or vertical surface), the prosthetic insert does not easily fall out.

상기 몸체의 형태는 사각기둥인 것이 바람직하나, 그외의 다각기둥 형상일수도 있고, 내부통로(38)(38')와 연통되는 통공(42)들, 걸림돌기의 위치, 갯수, 모양 및 크기 등에 대해서는 반드시 본 도면에 개시된 내용에 한정되지 않고 다양하게 변형될 수 있다. 즉, 본 명세서에 첨부된 도면에 도시된 예에서는 상, 하부가 개방되어 있으나, 일부는 폐쇄되고, 일부는 통공의 형태로 형성될 수도 있다. 또, 걸림돌기도 도면에는 사각뿔의 형태를 하고 있으나, 이러한 사각뿔이 전후방 또는 좌우로 일정각도를 가지게 형성될 수도 있고, 걸림돌기가 측면에 형성될 수도 있다. 다만, 상기 몸체(32) 내에 충전된 골 성장 물질 위로 골편 및 혈액 등이 더욱 많이 쌓이도록 한다는 측면에서는, 걸림돌기가 적어도 상부면에는 형성되어 있는 것이 바람하다.The shape of the body is preferably a rectangular pillar, but may also be other polygonal pillar shape, the through-holes 42 in communication with the inner passage 38, 38 ', the location, number, shape and size of the locking projections, etc. The present invention is not necessarily limited to the contents disclosed in the drawings and may be variously modified. That is, in the example shown in the drawings attached to the specification, the upper and lower portions are open, but some are closed, and some may be formed in the form of through holes. In addition, although the locking projections have the shape of a square pyramid in the drawing, the square pyramid may be formed to have a predetermined angle in the front, rear, left and right, or the locking projection may be formed on the side. However, in terms of allowing more bone fragments, blood, and the like to accumulate on the bone growth material filled in the body 32, it is desirable that at least an upper surface of the engaging protrusion is formed.

그리고, 상기 몸체(32)는 후방에서 전방으로 가면서 일정한 곡률이 아니라 곡률이 변하게 구부려져 있을 수도 있다.In addition, the body 32 may be bent to change the curvature rather than a constant curvature from the rear to the front.

상기 진입전방부(34)는 상기 몸체(32)의 전방측에 연결되어 상기 삽입공간으로 최초로 진입하는 부분으로서, 후측은 상기 몸체(32)의 외주면에 일체로 연결되고, 앞측은 전방을 향해 외주 둘레가 점차로 좁아져 사각뿔 형태로 되어 있다. 이때 각변 및 꼭지점은 부드럽게 라운딩되어 있다.The entrance front part 34 is connected to the front side of the body 32 to enter the insertion space for the first time, the rear side is integrally connected to the outer circumferential surface of the body 32, the front side is the outer peripheral toward the front The circumference gradually narrows to form a square pyramid. At this time, the sides and vertices are smoothly rounded.

상기 진입전방부의 최종 전방단부는 원형형상을 가질 수도 있다. 물론 이 단면형상은 정확히 원형을 이룰 수도 있으나, 타원 형상을 가지는 것도 가능하다.The final front end of the entry front portion may have a circular shape. Of course, this cross-sectional shape may be exactly circular, but may also have an elliptic shape.

상기 후방부(36)는 상기 몸체(32)의 후방측에 연결되어 시술시에 삽입장치가 결합되는 부분으로서, 그 후방면에는 결합부가 형성되어 있다. 이 결합부는 나사홀(46)로 되어 있다.The rear portion 36 is connected to the rear side of the body 32 is a portion to which the insertion device is coupled during the procedure, the rear side is formed with a coupling portion. This engaging portion is a screw hole 46.

상기 보철 삽입물(30)는 스텐레스강, 코발트-크롬-몰리브덴 합금, 티탄 같은 불활성의 강성금속으로 제조될 수 있다. 또한, 상기 걸림돌기(44) 부분은 보철 삽입물 몸체(32)와 동일 재료일 수도 있고, 중합체 수지커버 등과 같은 다른 재료일 수도 있다. 또, 상기와 같은 불활성 금속 대신에 플라스틱, 폴리카보네이트, 폴리프로필렌, 폴리아세틸, 폴리에티렌과 같은 폴리설폰형, 유리 또는 탄소섬유로 양호하게 충전된 레이디오루슨트 재료일 수도 있다. 이러한 플라스틱은 사출주조될 수도 있다.The prosthetic insert 30 may be made of an inert rigid metal such as stainless steel, cobalt-chromium-molybdenum alloy, or titanium. In addition, the engaging protrusion 44 may be made of the same material as the prosthetic insert body 32 or may be made of another material such as a polymer resin cover. In addition, instead of the inert metal as described above, a polysulfone type such as plastic, polycarbonate, polypropylene, polyacetyl, polystyrene, glass or carbon fiber may be a well-filled iolucent material. Such plastics may be injection molded.

한편, 도 6 및 도7에 도시한 바와 같이, 보철 삽입물에 그 측면부에 트임부가 형성되어 있을 수도 있다. 상기 트임부는 상기 격벽부(40)를 사이에 두고 좌우측에 각각 형성된 트임부(48)(48')로 되어 있다.On the other hand, as shown in Figs. 6 and 7, a protruding portion may be formed in the side surface portion of the prosthetic insert. The said trim part is the trim part 48 (48 ') formed in the left and right sides, respectively, between the partition 40 parts.

이러한 트임부는, 도 6에 도시한 바와 같이 진입전방부(34)에서 몸체(32)의 좌우측면을 따라 상기 통공(42)을 가로지르는 트임부(48)와, 후방부(36)에서 몸체(32)의 좌,우측면을 따라 상기 통공(42')를 가로지르는 트임부(48')로 되어 있을 수도 있고, 도 7에 도시한 바와 같이 진입전방부(34)에서 몸체(32)의 일측면을 따라 상기 통공(42)을 가로지르는 트임부(48)와, 후방부(36)에서 몸체(32)의 일측면을 따라 상기 통공(42')를 가로지르는 트임부(48')로 되어 있을 수도 있으나, 어느 경우에나 상하로 탄성을 가질 수 있도록, 트임부(48)(48')에 의해 절개된 상하단부가 상하방향의 충격에 의해 근접했다가 다시 멀어지는 움직임이 발생할 수 있어야 한다. 이러한 구성의 부여로 인한 효과는 다음과 같다.As shown in FIG. 6, the trim part 48 includes a trim part 48 that crosses the through hole 42 along the left and right sides of the body 32 at the entrance front part 34, and a body (at the rear part 36). 32 may be a trim 48 'that crosses the through hole 42' along one of the left and right sides thereof, and as shown in FIG. 7, one side of the body 32 in the entry front part 34. Along the through hole 42, and the rear portion 36 to the cut portion 48 'across the through hole 42' along one side of the body 32 In some cases, in order to have elasticity up and down, the upper and lower ends cut by the trimming portions 48 and 48 'may be moved close to each other by an impact in the vertical direction and then move away again. The effect of the provision of such a configuration is as follows.

골의 재형성은 물리적인 힘이나, 미세 전기 자극에 의해서도 일어나게 되는데, 스트레스, 즉 응력(단위 면적당 가해지는 힘)을 많이 받는 부위와 미세 움직임(micromotion)과 같은 적절한 기계적 자극(mechanical stumulation)이 발생하는 곳에서는 골의 생성이 일어나고, 부하(하중)을 적게 받는 부위에서는 골의 흡수가 일어난다. 이러한 골의 재형성 기전에 따르면, 견고한 고정은 골의 재형성을 변화시킬 수 있고, 골 조직과 금속간의 경도의 차이로 인해 주위의 골 조직 흡수(osteplysis)를 일으킬 수 있다. 예를 들어, 강철은 골조직보다 10배 강도가 높다. 이런 큰 강도의 금속으로 고정한 경우, 부하를 주면 골 조직으로 정상적인 응력이 전달되지 않아 국소적으로 골의 흡수가 일어난다. 이로 인해, 생성된 골의 구조가 약해지므로 골절이 발생할 위험이 높다. 이러한 현상을 응력 방패 현상(stress shielding)이라 한다. 또한 골과 보철 기구 사이의 큰 강도 차이는 골조직과 보철 기구 고정부 사이에 해리현상(loosening, 골과 보철 기구 사이의 고정이 약해지는 현상)을 유발할 가능성도 높다.Bone remodeling can also be caused by physical forces or micro electrical stimuli, where stresses, ie areas under high stress (force per unit area) and appropriate mechanical stumulations, such as micromotion, occur. Where bones are produced, bones are absorbed at sites with less load (load). According to this bone remodeling mechanism, firm fixation can change bone remodeling, and cause osteplysis of the surrounding bone tissue due to the difference in hardness between the bone tissue and the metal. For example, steel is ten times stronger than bone tissue. In the case of fixing with a metal of such a high strength, when a load is applied, normal stress is not transmitted to the bone tissue, and bone absorption occurs locally. Because of this, the structure of the generated bone is weakened, so there is a high risk of fracture. This phenomenon is called stress shielding. In addition, a large difference in strength between the bone and the prosthetic device is likely to cause loosening between the bone tissue and the prosthetic fixture fixation.

이 때, 본 발명의 도 6 및 도7에 도시한 바와 같이, 보철 삽입물의 옆 벽면에 트임부(48)(48')를 형성한 경우, 척추에 상하 방향으로 충격이 가해지더라도 보철 삽입물 구조의 탄성도와 유연도의 증가로 인하여, 이것은 구조체에 어느 정도의 변형을 가능하게 해준다. 이러한 성질은 보철 삽입물 내에 채워진 골편에 충분한 하중과 적절한 기계적 자극이 전달되게 하여, 앞에서 언급한 골의 재형성에 유리한 환경을 조성해 준다.At this time, as shown in Figs. 6 and 7 of the present invention, in the case where the trimming portions 48 and 48 'are formed on the side wall surface of the prosthetic insert, even if an impact is applied to the spine in the up and down direction, Due to the increase in elasticity and flexibility, this allows for some deformation of the structure. This property allows sufficient load and appropriate mechanical stimulus to be transferred to the bone fragments filled in the prosthetic insert, creating an environment favorable for the reshaping of the aforementioned bones.

도8은 본 발명의 보철 삽입물이 두개로 나누어져 결합하거나 분리할 수 있게 된 구조이다. 이러한 분리구조는 도시한 바와 같이, 격벽부 부분에 수평방향으로슬라이딩 홈(50) 및 슬라이딩 돌기(52)를 서로 대향되게 형성하여, 그 중간에서 상하방향으로 핀부재(54)로 결합하거나, 다양한 착탈수단으로 결합/분리하는 구조로 할 수 있다. 이때, 본 발명의 보철 삽입물이 2개 이상 다수개로 나누어져 결합하거나 분리할 수 있게 되어 있을 수도 있다.8 is a structure in which the prosthetic insert of the present invention is divided into two and can be combined or separated. This separation structure, as shown in the partition wall portion to form a sliding groove 50 and the sliding projections 52 in the horizontal direction to face each other, the middle of the coupling to the pin member 54, or various The structure can be combined / separated by detachable means. At this time, the prosthetic insert of the present invention may be divided into two or more and may be coupled or separated.

도9는 본 발명의 척추체간 유합용 보철 삽입물을 환자의 추간 간격에 미리 형성된 삽입공간에 삽입하는 공구의 일실시예를 나타낸다.Figure 9 shows one embodiment of a tool for inserting the intervertebral fusion prosthetic insert of the present invention into an insertion space formed in advance in the intervertebral interval of the patient.

도시한 바와 같이 본 발명에 의한 척추체간 유합용 보철 삽입물의 삽입장치는, 후방부에 결합부(나사홀: 46)가 형성된 본 발명의 보철 삽입물(30)에 사용되며, 그 내부에 길이방향으로 나사구멍(58)이 형성된 외측로드(60), 상기 나사홀(46)에 그 일측이 끼워지는 요동부재(62)와, 상기 외측로드(60)의 나사구멍(58)에 나사결합되어 상기 요동부재(62)의 타측에 힌지결합되는 내측로드(64)로 이루어져 있다. 상기 요동부재(62)와 상기 내측로드(64)는 핀(66)에 의해 힌지 결합되어 있다.As shown, the insertion device of the intervertebral fusion prosthesis according to the present invention is used in the prosthetic insert 30 of the present invention in which a coupling part (screw hole: 46) is formed in the rear part, and in the longitudinal direction therein. An outer rod 60 having a screw hole 58 formed therein, a rocking member 62 whose one side is fitted into the screw hole 46, and a screw hole 58 screwed into the screw hole 58 of the outer rod 60 The inner rod 64 is hinged to the other side of the member 62. The rocking member 62 and the inner rod 64 are hinged by a pin 66.

상기 외측로드(60)는, 자루부(68)와 이 자루부의 후단에 형성된 손잡이부(70)를 가진 원형로드로 되어 있다. 그 외주면은 파지력을 높이도록 오돌토돌하게 되어 있다. 그리고, 상기 나사구멍(58)의 앞측에는 소정길이로 일반 원형구멍(72)이 형성되어 있다.The outer rod 60 is a circular rod having a bag 68 and a handle 70 formed at the rear end of the bag. The outer circumferential surface of the outer surface is to be raised to increase the holding power. In addition, the general circular hole 72 is formed in the front side of the said screw hole 58 by predetermined length.

상기 요동부재(62)는, 상기 결합부(나사홀:46)에 나사결합되는 대향 결합부(나사부 : 74)와 상기 내측로드(64)의 앞단부에 끼워지는 플랜지(76)가 그 양단에 형성되고, 그 중간부(78)는 상기 원형구멍(72)에 삽입되어 미끄러지게 되어 있다.상기 플랜지부(76)는 원통의 중간부에서 돌출 연장되어 있고 그 그 평면에는 상기 핀(66)이 끼워지는 구멍이 형성되어 있다. 상기 요동부재(62)는 상기 외측로드(60)와 내측로드(64)의 작동에 따라 요동하여 상기 보철 삽입물(30)이 회동하게 한다.The swinging member 62 has an opposite coupling portion (screw portion 74) screwed into the coupling portion (screw hole: 46) and a flange 76 fitted to the front end of the inner rod 64 at both ends thereof. The intermediate portion 78 is inserted into the circular hole 72 and slides. The flange portion 76 protrudes from the intermediate portion of the cylinder, and the pin 66 is formed in the plane thereof. A hole to be fitted is formed. The oscillation member 62 swings according to the operation of the outer rod 60 and the inner rod 64 so that the prosthetic insert 30 rotates.

본 실시예에서는 상기 결합부 및 대향결합부가 나사결합부로 되어 있으나, 다양한 수단에 의해 구현될 수 있다.In the present embodiment, the coupling portion and the opposite coupling portion are screw coupling portions, but may be implemented by various means.

상기 내측로드(64)는, 상기 원형구멍(72)에 밀착하여 미끄러지는 슬라이딩부(82)와, 상기 나사구멍(58)에 나사결합되는 나사부(84)와, 이 나사부(84)의 후단에 형성된 손잡이부(86)를 가진 원형로드로 되어 있다. 상기 손잡이부(86)의 외주면은 파지력을 높이도록 오돌토돌하게 되어 있다. 상기 슬라이딩부(82)의 앞단부에는 상기 플랜지(76)가 끼워지도록 소정 깊이의 슬릿홈(88)이 내측로드의 길이방향을 따라 수평으로 형성되어 있다. 그리고, 상기 요동부재(62)를 결합하는 핀(66)이 삽입되도록 슬릿홈(88)의 수평면에 대해 직각으로 관통구멍(90)이 형성되어 있다.The inner rod 64 has a sliding portion 82 sliding in close contact with the circular hole 72, a screw portion 84 screwed into the screw hole 58, and a rear end of the screw portion 84. It is a circular rod having a handle 86 formed. The outer circumferential surface of the handle portion 86 is to be raised to increase the gripping force. A slit groove 88 having a predetermined depth is horizontally formed along the longitudinal direction of the inner rod at the front end of the sliding portion 82 so that the flange 76 is fitted. In addition, the through hole 90 is formed at a right angle with respect to the horizontal plane of the slit groove 88 so that the pin 66 coupling the swinging member 62 is inserted therein.

이와 같이 구성된 본 발명에 의한 보철 삽입물(30)을 추간판의 한쪽만 절개하여 형성한 삽입공간에 삽입장치로 삽입하는 상태가 도 10에 도시되어 있다.10 shows a state in which the prosthetic insert 30 according to the present invention configured as described above is inserted into the insertion space formed by cutting only one side of the intervertebral disc.

도10의 A에 도시한 바와 같이, 외측로드(60)의 내부에 내측로드(64)가 나사결합된 후, 외측 로드(60)의 앞측으로 돌출한 슬라이딩부(82)에 상기 요동부재(62)를 힌지 결합하고, 이 요동부재(62)의 나사부(74)에 보철 삽입물(30)을 결합한 다음, 추간판의 삽입공간에 환자의 등쪽에서 복부를 향하여 보철 삽입물(30)을 밀어 넣어 요동부재(62)의 나사부가 우상측을 향 하도록 한 다음, 화살표 P와 같이 삽입장치를 밀면서 외측로드(60)의 손잡이부(70)를 잡고 시계방향(CW)으로 회전시키면 외측로드(60)의 전단부가 요동부재(62)를 밀게 되어, 보철 삽입물(30)이 반시계방향으로 회전하면서 추간 간격사이로 들어간다. 이러한 상태가 도10의 B에 도시되어 있다.As shown in FIG. 10A, after the inner rod 64 is screwed into the outer rod 60, the rocking member 62 is attached to the sliding portion 82 protruding toward the outer side of the outer rod 60. Hinge), the prosthetic insert 30 is coupled to the threaded portion 74 of the rocking member 62, and then the prosthetic insert 30 is pushed into the insertion space of the intervertebral disc toward the abdomen from the patient's back to the rocking member ( The screw of 62) faces the upper right side, and then, while pushing the insertion device as shown by the arrow P, while holding the handle 70 of the outer rod 60 and rotating it clockwise (CW), the front end of the outer rod 60 The oscillating member 62 is pushed so that the prosthetic insert 30 rotates counterclockwise and enters between the intervertebral intervals. This state is shown in FIG.

화살표 P와 같이 삽입장치를 밀면서 외측로드(60)의 손잡이부(70)를 잡고 시계방향(CW)으로 더욱 회전시키면, 도10의 C에 도시한 바와 같이 보철 삽입물(30)이 추간 간격사이에 안착된다. 보철 삽입물의 삽입중에는 상기 내측로드(64)는 회전시키지 않는다.While holding the handle 70 of the outer rod 60 while pushing the insertion device as shown by arrow P and further rotated clockwise (CW), as shown in C of FIG. 10, the prosthetic insert 30 is placed between the intervertebral intervals. It is seated. The inner rod 64 does not rotate during insertion of the prosthetic insert.

이때, 처음에 진입하는 보철 삽입물의 진입전방부(34)는 전방을 향해 외주 둘레가 점차로 좁아져 있으므로, 삽입공간 입구에서 별다른 저항을 받지 않게 된다. 이후, 몸체(32)의 후방까지 완전히 삽입되면, 몸체(32)의 둘레가 가지는 각도에 의해 삽입공간 내의 골조직에 걸려 위치 이동이 저항을 받게 된다. 또한, 상기 몸체(32)의 상, 하면에는 걸림돌기(44)가 다수 형성되어 있기 때문에, 이러한 위치 이동의 저항 효과가 보다 더 강화될 수 있다.At this time, the front entrance 34 of the prosthetic insert first entering is gradually narrower in the outer circumference toward the front, and thus, there is no resistance at the entrance of the insertion space. Then, if fully inserted to the rear of the body 32, the position movement is subjected to resistance by the bone tissue in the insertion space by the angle of the circumference of the body 32. In addition, since a plurality of locking projections 44 are formed on the upper and lower surfaces of the body 32, the resistance effect of such position movement can be further enhanced.

도 10의 C에 도시한 바와 같이, 보철 삽입물(30)이 안착된 후, 외측로드(60)가 회전되지 않는 상태로, 내측로드(64)를 반시계방향(CCW)으로 회전시키면, 요동부재(62)의 나사부(74)가 보철 삽입물(30)의 나사홀에서 빠진다. 이때, 요동부재(62)는 원형구멍(72)에 의해 안내된다. 요동부재(62)가 보철 삽입물(30)에서 완전히 빠진 상태가 도10의 D에 도시되어 있다.As shown in FIG. 10C, when the inner rod 64 is rotated counterclockwise (CCW) without the outer rod 60 being rotated after the prosthetic insert 30 is seated, the swinging member The threaded portion 74 of 62 is removed from the screw hole of the prosthetic insert 30. At this time, the swinging member 62 is guided by the circular hole 72. A state in which the swinging member 62 is completely removed from the prosthetic insert 30 is shown in FIG.

다음에 삽입장치 전체를 화살표 P'방향으로 당겨 도 10의 E에 도시한 바와같이 삽입장치를 빼내게 된다.Next, the insertion device is pulled out in the direction of arrow P 'to remove the insertion device as shown in E of FIG.

본 발명의 삽입장치를 이용하면, 보철 삽입물의 위치를 정확히 잡아 삽입공간에 원활히 삽입하고 보철 삽입물을 안정되게 안착시킨 상태로 유지할 수 있으며 삽입장치를 용이하게 빼 낼 수 있다.By using the insertion apparatus of the present invention, the position of the prosthetic insert can be precisely grasped and inserted into the insertion space smoothly, and the prosthetic insert can be stably settled, and the insertion apparatus can be easily taken out.

도 11은 본 발명에 의한 척추체간 유합용 보철 삽입물의 삽입장치의 다른 실시예를 나타내는 분해사시도이다.Figure 11 is an exploded perspective view showing another embodiment of the insertion device of the intervertebral fusion prosthesis for interbody integration according to the present invention.

도시한 바와 같이, 본 실시예의 삽입장치는, 그 내부에 길이방향으로 암나사부가 형성된 외측로드(160)와, 상기 외측로드의 내부에 나사결합된 내측로드(164)와, 그 일측은 보철 삽입물(30)의 결합부(나사홀:46)과 나사결합되고 그 타측은 후술하는 요동로드 및 외측로드(160)에 결합되어 상기 내측로드(164)와 외측로드(160)의 작동에 따라 요동하는 요동부재(162)와, 상기 내측로드(164)의 단부에 그 일단이 고정되어 상기 외측로드(160)의 내부에 수용되는 고정로드(166)와, 상기 고정로드(166)의 타단과 상기 요동부재(162)의 후술하는 베이스부에 그 양단의 힌지결합되어 상기 외측로드(160)의 내부에서 요동하는 요동로드(168)로 이루어져 있다.As shown in the drawing, the inserting apparatus of the present embodiment includes an outer rod 160 having a female thread in the longitudinal direction therein, an inner rod 164 screwed into the outer rod, and one side thereof having a prosthetic insert ( 30 is screwed with the coupling portion (screw hole: 46) and the other side thereof is coupled to the swinging rod and the outer rod 160 to be described later to swing according to the operation of the inner rod 164 and the outer rod 160 A member 162, a fixed rod 166, one end of which is fixed to an end of the inner rod 164, accommodated in the outer rod 160, the other end of the fixed rod 166, and the oscillating member It consists of a rocking rod 168 is hinged at both ends of the base portion to be described later of 162 and oscillated inside the outer rod 160.

상기 외측로드(160)는, 그 내부에 암나사가 형성되어 상기 내측로드(164)에 나사결합되는 결합부(170)와, 상기 고정로드(166)와 요동로드(168)를 수용하도록 길게 돌출하여 그 내부가 길이방향으로 관통된 사각통형상의 케이스부(172)로 되어 있다. 상기 케이스부(172)의 단부에는 상기 요동부재(162)의 후술하는 베이스부 일단이 핀(173)에 의해 힌지결합되어 있다.The outer rod 160 has a female thread formed therein and protrudes long to accommodate the coupling part 170 screwed to the inner rod 164, and the fixing rod 166 and the swinging rod 168. The inside is a rectangular cylindrical case portion 172 penetrated in the longitudinal direction. One end of the base portion, which will be described later, of the rocking member 162 is hinged to the end of the case portion 172 by a pin 173.

상기 요동부재(162)는, 베이스부(176)와 이 베이스부(176)에서 돌출하여 상기 결합부(나사홀:46)에 결합되는 대향 결합부(나사부:174)로 이루어져 있다. 상기 베이스부(176)의 일단은 핀(173)에 의해 상기 외측로드의 케이스부(172) 단부에 힌지 결합되어 있고, 상기 베이스부(176)의 타단은 핀(178)에 의해 상기 요동로드(168)의 일단에 힌지결합되어 있다.The swinging member 162 includes a base portion 176 and an opposing coupling portion (screw portion 174) which protrudes from the base portion 176 and is coupled to the coupling portion (screw hole 46). One end of the base portion 176 is hinged to the end of the case portion 172 of the outer rod by a pin 173, the other end of the base portion 176 is the swinging rod ( 168 is hinged to one end.

상기 내측로드(164)는, 상기 외측로드(160)의 결합부(170)에 나사결합되도록 숫나사가 형성된 숫나사부(180)와, 내측로드(164)를 잡고 회전시키도록 그 표면에 요철이 형성된 손잡이부(182)로 이루어진 원형로드로 되어 있다. 상기 숫나사부(180)의 단부에는 상기 고정로드(166)가 내삽되어 고정나사(184)에 의해 고정되도록 소정깊이의 구멍(186)의 형성되어 있다. 상기 고정나사(184)는 상기 숫나사부(180)의 외면에서 반경방향을 통해 상기 구멍(186)에 이르게 되어 있으며 원주방향을 따라 다수개가 결합되어 있다.The inner rod 164 has a male screw portion 180 having a male thread formed thereon so as to be screwed to the engaging portion 170 of the outer rod 160 and an uneven surface formed on the surface thereof to hold and rotate the inner rod 164. It is made of a circular rod consisting of a handle portion (182). At the end of the male screw portion 180, the fixing rod 166 is interpolated to form a hole 186 having a predetermined depth so as to be fixed by the fixing screw 184. The fixing screw 184 reaches the hole 186 through the radial direction on the outer surface of the male screw portion 180, and a plurality of fixing screws 184 are coupled along the circumferential direction.

상기 고정로드(166)의 일단에는 상기 고정나사(184)가 끼워져 걸리도록 원주방향을 따라 소정깊이의 홈(188)이 형성되어 있다. 상기 고정로드(166)의 타단은 핀(190)에 의해 상기 요동로드(168)의 타단에 힌지결합되어 있다.One end of the fixing rod 166 is provided with a groove 188 of a predetermined depth along the circumferential direction so that the fixing screw 184 is fitted. The other end of the fixed rod 166 is hinged to the other end of the swinging rod 168 by a pin 190.

이와 같이 구성된 본 발명에 다른 실시예에 의한 삽입장치의 작용상태도가 도12 및 도13에 도시되어 있다.12 and 13 show an operation state of the insertion apparatus according to another embodiment of the present invention configured as described above.

도12의 a와 같이 삽입장치가 결합된 상태에서, 내측로드(164)의 손잡이부(182)를 잡고 회전시키면, 외측로드(160)에 대해 상대적으로 내측로드(164)가 빠지면서, 요동부재(162)가 핀(173)을 힌지중심으로 하여 반시계방향으로 회동하고, 요동로드(168)가 당겨지면서 경사지게 되어, 도12의 b의 상태를 거쳐 도12의 c의 상태로 최종위치하게 된다. 이때 내측로드(164)의 손잡이부(182)를 잡고 전체적으로 밀면서 보철 삽입물을 삽입하게 된다.In the state in which the insertion device is coupled as shown in FIG. 12A, when the handle 182 of the inner rod 164 is grasped and rotated, the inner rod 164 is removed relative to the outer rod 160, and the oscillating member ( 162 rotates in the counterclockwise direction with the pin 173 as the hinge center, and the swing rod 168 is inclined while being pulled, and is brought to a final position in the state of c of FIG. 12 via the state of FIG. At this time, while holding the handle portion 182 of the inner rod 164 as a whole to insert the prosthetic insert.

보철 삽입물이 요동부재에 결합된 상태와 삽입되는 상태는 도10와 동일하므로, 상세한 설명은 생략한다. 도13은 외측로드(160)를 제거한 상태로서, 내측로드(164)의 회전에 따라 요동로드(168)가 외측로드의 내부에서 기울어지는 상태를 보여준다.Since the state in which the prosthetic insert is coupled to the rocking member and inserted is the same as in FIG. 10, detailed description thereof will be omitted. FIG. 13 shows a state in which the outer rod 160 is removed, and the swing rod 168 is inclined in the outer rod as the inner rod 164 rotates.

본 발명에 의한 척추체간 유합용 보철 삽입물 및 보철 삽입물의 삽입장치에 의하면, 척추의 추간판의 한쪽만 절개하여 삽입할 수 있고 고정 및 교정기능을 충분히 가지도록 하므로써 환자의 시술부위 및 시술시간을 최소화하며 시술을 용이하게 할 수 있고, 삽입공간에의 진입이 보다 원활하면서도, 최종 고정위치가 안정될 수 있다.According to the intervertebral fusion prosthesis implant and the prosthesis insert of the prosthesis according to the present invention, only one side of the intervertebral disc of the spine can be incised and inserted, and the fixation and correction functions are minimized, thereby minimizing the surgical site and the procedure time of the patient. The procedure can be facilitated, and while the entry into the insertion space is more smooth, the final fixed position can be stabilized.

Claims (6)

인접 추체 간격내에 형성시킨 소정의 삽입공간에 삽입함으로써, 추간간격을 복원 및 유지하면서 전위를 방지하고 골유합을 충족시키는 추체간 유합술에 사용되는 보철 삽입물에 있어서,In the prosthetic insert used for intervertebral fusion to prevent dislocation and satisfy bone union by inserting into a predetermined insertion space formed in an adjacent vertebral space, 그 내부에 길이방향으로 내부통로가 형성되고, 상기 삽입공간의 내면과 접촉하는 외주면에는 다수개의 걸림돌기가 형성되며, 상기 내부통로와 연통된 다수개의 통공이 형성되며, 길이방향으로 소정의 곡률로 구부려진 다각기둥 형상의 몸체와;An inner passage is formed therein in the longitudinal direction, and a plurality of locking projections are formed on the outer circumferential surface in contact with the inner surface of the insertion space, and a plurality of through holes communicating with the inner passage are formed and bent at a predetermined curvature in the longitudinal direction. A body of a true polygonal pillar shape; 상기 몸체의 전방측에 연결되어 상기 삽입공간으로 최초로 진입하는 진입전방부와;An entrance front part connected to the front side of the body to initially enter the insertion space; 상기 몸체의 후방측에 연결되어 시술시에 삽입장치가 결합되도록 결합부가 형성된 후방부로 이루어진 것을 특징으로 하는 척추체간 유합용 보철 삽입물.Interproximal fusion prosthesis for interbody fusion, characterized in that consisting of the rear portion is formed in the coupling portion is coupled to the insertion side when the procedure is coupled to the body of the body. 제1항에 있어서,The method of claim 1, 상기 진입전방부는, 일측은 상기 몸체의 외주면에 일체로 연결되고, 타측은 전방을 향해 외주 둘레가 점차로 좁아져 있는 것을 특징으로 하는 척추체간 유합용 보철 삽입물.The entrance front portion, one side is integrally connected to the outer peripheral surface of the body, the other side is the intervertebral fusion prosthetic insert, characterized in that the outer circumference gradually narrowed toward the front. 제1항에 있어서,The method of claim 1, 상기 몸체의 측면에는 척추 추체간 장착시 상하방향으로 탄성을 부여하여 보철삽입물과 추체간의 골유합을 촉진하고 충격을 흡수하게 하는 트임부가 형성되어 있는 것을 특징으로 하는 척추체간 유합용 보철 삽입물.The prosthesis for interbody fusion is formed on the side of the body is provided with a trim portion to impart elasticity in the vertical direction when mounting between the intervertebral vertebrae to promote bone union between the vertebral body and absorb the impact. 제1항에 있어서,The method of claim 1, 상기 몸체는 다수개로 분할 가능케 되어 있는 것을 특징으로 하는 척추체간 유합용 보철 삽입물.The prosthesis for interbody fusion, characterized in that the body is divided into a plurality. 후방부에 결합부를 가진 척추체간 유합용 보철 삽입물에 사용되는 것으로서,As used for intervertebral fusion prosthetic inserts with joints in the posterior part, 그 내부에 길이방향으로 암나사부가 형성된 외측로드와;An outer rod having a female screw portion formed in the longitudinal direction therein; 상기 외측로드의 내부에 나사결합된 내측로드와;An inner rod screwed into the outer rod; 그 일측은 상기 결합부와 결합되고 그 타측은 상기 내측로드에 결합되어 상기 내측로드와 외측로드의 작동에 따라 요동하는 요동부재로 이루어 진 것을 특징으로 하는 척추체간 유합용 보철 삽입물의 삽입장치.One side thereof is coupled to the coupling portion and the other side is coupled to the inner rod insertion device of the interbody fusion prosthesis, characterized in that made of a rocking member that swings in accordance with the operation of the inner rod and the outer rod. 제5항에 있어서,The method of claim 5, 상기 요동부재는 베이스부와 이 베이스부에서 돌출하여 상기 결합부에 결합되는 대향 결합부로 이루어져 있되,The rocking member is composed of a base portion and an opposing coupling portion protruding from the base portion and coupled to the coupling portion, 상기 베이스부의 일단은 상기 외측로드의 단부에 힌지 결합되어 있고 상기 베이스부의 타단에는 요동로드의 일단이 힌지결합되어 있으며,One end of the base portion is hinged to the end of the outer rod and one end of the swinging rod is hinged to the other end of the base portion, 상기 요동로드의 타단은 상기 내측로드의 단부에 그 일단이 고정된 고정로드의 타단에 힌지결합된 구조로 되어 있는 것을 특징으로 하는 척추체간 유합용 보철 삽입물의 삽입장치.The other end of the oscillating rod is inserted device of the intervertebral fusion fusion prosthesis, characterized in that the structure is hinged to the other end of the fixed rod, one end of which is fixed to the end of the inner rod.
KR10-2000-0050009A 2000-08-28 2000-08-28 a prosthetic implant for spinal interbody fusion and a inserting apparatus thereof KR100371308B1 (en)

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