KR20080093846A - Artificial disk for anterior lumbar interbody fusion - Google Patents

Artificial disk for anterior lumbar interbody fusion Download PDF

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KR20080093846A
KR20080093846A KR1020070079514A KR20070079514A KR20080093846A KR 20080093846 A KR20080093846 A KR 20080093846A KR 1020070079514 A KR1020070079514 A KR 1020070079514A KR 20070079514 A KR20070079514 A KR 20070079514A KR 20080093846 A KR20080093846 A KR 20080093846A
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intervertebral
prosthesis
anchor
fixing
support
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KR1020070079514A
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Korean (ko)
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KR100881592B1 (en
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이상호
전상협
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주식회사 엔에이치에스
이상호
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455—Joints 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
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30306—Three-dimensional shapes harpoon-shaped
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30785—Plurality of holes parallel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30789—Plurality of holes perpendicular with respect to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • A61F2002/30843—Pyramidally-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30879—Ribs
    • A61F2002/30883—Ribs dovetail-shaped
    • A—HUMAN NECESSITIES
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30884—Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0097—Harpoon-shaped

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Neurology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

An artificial disk for anterior lumbar interbody fusion is provided to fix the artificial disk stably by forming an anchor part on upper and lower parts of a body and preventing the anchor part from being separated from a cortical bone by excess extension and axial rotation of the vertebrae. An artificial disk for anterior lumbar interbody fusion includes: a support part(103) protrusively formed on upper and lower parts of a body(101) to be consecutive in front and rear directions of the body; and an anchor part(106) having an insertion part(104) pointedly extended to an upper part of the support part, and a locking part(105) protrusively formed on a side part of the insertion part by being extended from the insertion part toward the body.

Description

추간체 고정 보형재{Artificial Disk for Anterior Lumbar Interbody Fusion}Intervertebral Fixation for Intervertebral Discs {Artificial Disk for Anterior Lumbar Interbody Fusion}

본 발명은 추간체 고정 보형재에 관한 것이다. 특히, 본 발명은 추체 사이에 보형재가 견고하게 끼워지고 고정될 수 있도록 몸체의 상, 하부에 걸림부를 갖는 뾰족한 단면형상의 앵커부를 형성하여 추체 사이에 고정된 보형재가 미끄러지거나 탈락되지 않도록 한 추간체 고정 보형재에 관한 것이다. The present invention relates to an intervertebral fixation prosthesis. In particular, the present invention forms a pointed cross-section anchor portion having a locking portion on the upper and lower parts of the body so that the prosthetic member can be firmly fitted and fixed between the body, the intervertebral body is fixed so that the prosthetic member fixed between the body does not slip or fall off It relates to a fixed prosthesis.

추간체 고정용 보형재는 인공 디스크(disk, 추간판)로서, 인체의 척추를 구성하는 추간판이 퇴행, 퇴행에 의한 질환, 노화, 사고 등으로 본래의 기능을 수행하지 못할 때 디스크를 적출하고 그 적출된 위치에 삽입되어 디스크의 기능을 수행하게 한 것이다. The intervertebral fixation prosthesis is an artificial disk (disc), and when the intervertebral disc constituting the human spine fails to perform its original function due to degenerative, degenerative disease, aging, accident, etc. It is inserted in place to perform the functions of the disc.

보통 추간체 고정 보형재는 중공형으로서, 그 내부에는 본칩(bone chip)이 삽입되고 이 본칩이 재생되어 상, 하 추체(body)와 일체됨으로써 디스크의 역할을 담당할 수 있게 된다. Usually, the intervertebral fixation prosthesis is hollow, and a bone chip is inserted therein, and the bone chip is regenerated so as to be integrated with the upper and lower bodies, thereby serving as a disk.

종래에는 보형재가 추체 사이에 삽입된 후 과도한 움직임이 발생하더라도 이탈되거나 미끄러지지 않도록 하기 위하여, 도 1에 도시된 바와 같이 몸체(2)의 상, 하부에 여러 개의 뾰족한 고정돌기(spike)(3)를 돌출 성형하여, 추체 사이에 삽입된 보형재(1)의 고정돌기(3)가 피골질에 파고들어가 움직이지 않고 고정되게 하였다.Conventionally, in order to prevent deviation or slipping even if excessive movement occurs after the prosthesis is inserted between the vertebrae, a plurality of pointed spikes 3 are arranged on the upper and lower portions of the body 2 as shown in FIG. 1. By protruding molding, the fixing protrusions 3 of the prosthetic material 1 inserted between the vertebrae penetrated into the cortex and were fixed without moving.

상기 고정돌기(3)는 라운드와 뾰족한 모양의 중간 정도로 가공되어 있기 때문에 내구성이 우수하여 추간판(디스크)이 제거된 자리에 보형재(1)가 삽입되면, 척추의 피질골에 적절하게 삽입 고정되며, 보형재(1)가 미끄러지는 현상을 방지하고 활착이 원활하게 이루어질 수 있게 하는 것이다.Since the fixing protrusion 3 is processed in the middle of the round and the pointed shape, and excellent in durability, when the prosthetic member 1 is inserted in the place where the intervertebral disc (disc) is removed, it is properly inserted and fixed in the cortical bone of the spine, It is to prevent the prosthesis 1 from slipping and to make the sliding smoothly.

한편, 위와 같은 보형재(1)도 시술 후 척추의 익스텐션(extension)이나 축방향 회전(axial rotation)이 발생할 경우 보형재(1)가 탈락되는 현상이 종종 발생하게 된다. On the other hand, in the case of the above-described prosthesis (1) also occurs when the extension (axial) or axial rotation (axial rotation) of the spine after the procedure is often the phenomenon that the prosthesis (1) is dropped.

따라서, 상기한 현상을 방지하기 위하여 현재는 도 2에 도시된 바와 같이 보형재(1)와 페디클 스크류(pedicle screw)(4)를 병행 시술하는 예가 많다. Therefore, in order to prevent the above phenomenon, as shown in FIG. 2, there are many examples in which the prosthetic material 1 and the pedicle screw 4 are concurrently performed.

그러나 위와 같은 수술은 비교적 어렵고 큰 수술에 속한다. 특히, 이러한 수술은 환자의 비용 부담을 높일 뿐만 아니라 수술 시간이 길고 집도의와 수술에 참여하는 관계자들이 쉽게 피로하게 된다. 여기서, 페디클 스크류(4)를 시술하는 여러 방법은 이 기술이 속한 분야에서 일반적으로 알려져 있으므로 상세한 설명은 생략한다. However, the above surgery is relatively difficult and belongs to the big surgery. In particular, such surgery not only increases the patient's cost burden, but also lengthens the operation time and easily fatigues the practitioners and those involved in the surgery. Here, various methods of operating the pedicle screw 4 are generally known in the art to which the art belongs, so detailed description thereof will be omitted.

결국, 보형재(1)의 관건은 수술 후 견고하게 고정되고 탈락되지 않도록 함에 있는데, 도 2와 같은 수술이 이루어진다 하더라도 피시술자가 과도하게 움직일 경우 보형재(1)가 미끄러지거나 탈락할 수 있는 염려를 전혀 배제할 수 없다. After all, the key to the prosthesis (1) is to be firmly fixed and prevented from falling after the operation, even if the operation is performed as shown in Figure 2 there is a fear that the implant (1) can slip or fall if the subject is excessively moved. It cannot be excluded at all.

참고로, 도 2에서 도면부호 3a 및 3b는 척추 추체(body)이다. For reference, reference numerals 3a and 3b in FIG. 2 denote vertebral bodies.

따라서, 상기한 위험적 요소는, 보형재(1)가 삽입, 고정되는 정도가 미흡하여 척추의 활착이 저하되므로 피시술자의 안정적이고도 안전한 생활을 보장할 수 없게 한다는 문제점을 유발하게 한다. Therefore, the above-mentioned risk factor causes a problem that the degree of insertion and fixation of the prosthetic member 1 is insufficient, thereby degrading the lubrication of the spine, thereby preventing a stable and safe life of the subject.

본 발명은 상기한 문제점을 해결하기 위하여 안출된 것으로, 몸체의 상, 하부에 앵커부를 돌출 성형하여 피질골에 깊이 삽입된 앵커부가 척추의 과도한 익스텐션이나 축방향 회전에도 피질골로부터 탈락되지 않게 하여 보형재가 안정적으로 고정될 수 있게 하는 추간체 고정 보형제를 제공하는 데 그 목적이 있다.The present invention has been made to solve the above problems, by protruding and forming the anchor portion on the upper and lower parts of the body to prevent the anchor portion inserted deeply in the cortical bone from falling off the cortical bone even in excessive extension or axial rotation of the spine. It is an object of the present invention to provide an intervertebral fixation prosthesis that can be fixed by using

위 목적은, 몸체의 전, 후 방향으로 상기 몸체의 상, 하부에 연속되게 돌출 형성되는 지지부; 및 상기 지지부의 상부에 뾰족하게 연장형성되는 끼움부와, 상기 끼움부로부터 몸체를 향하여 끼움부의 측부에 돌출되게 연장 형성되는 탈락 방지용 걸림부를 갖는 앵커부;를 포함하여 이루어지는 본 발명에 의해 달성된다. The above object, the support portion is formed to continuously protrude above and below the body in the front, rear direction of the body; It is achieved by the present invention comprising a; anchoring portion having a sharply extending portion formed on the upper portion of the support portion, and an anti-falling locking portion extending to protrude from the fitting portion toward the body.

상기 끼움부의 상부에는 면취부가 형성됨이 바람직하다. It is preferable that the chamfered portion is formed on the fitting portion.

본 발명은 상기 앵커부의 상부에서 길이방향을 따라 연계형성되는 뾰족한 형상으로 이루어진 다수 개의 돌기부;를 더 포함하여 이루어질 수 있다. The present invention may further comprise a plurality of protrusions formed of a pointed shape that is linked to form along the longitudinal direction from the top of the anchor portion.

상기 지지부 및 앵커부는 몸체의 상, 하부에서 몸체를 중심으로 서로 대칭되게 각각 2개씩 형성됨이 바람직하다. Preferably, the support part and the anchor part are each formed two symmetrically with respect to the body from above and below the body.

본 발명은 지지부 및 앵커부가 몸체로부터 내측으로 약간 이격된 위치에서부터 전, 후 방향으로 연장 형성됨으로써, 보형재 고정 시 상, 하부 추체에 보형재의 지지부 및 앵커가 삽입될 홈(KEEL)을 깎을 때 추체의 외경면까지 홈을 형성하지 않 아도 되기 때문에 추체의 균열을 미연에 방지할 수 있다.The present invention is formed by extending in the front and rear directions from the position slightly spaced inward from the body by the support portion and the anchor portion, when cutting the prosthetic member when cutting the groove (KEEL) to insert the support portion and the anchor of the prosthetic member in the upper and lower vertebrae Since the grooves do not have to be formed to the outer diameter surface, the crack of the vertebra can be prevented in advance.

아울러, 보형재를 척추사이에 삽입 고정시키되, 보형재의 상, 하부면에 돌출 형성된 앵커부가 상, 하부 척추의 피질골에 깊게 박혀 견고한 고정상태를 유지하게 하고, 특히, 앵커부의 걸림부가 척추 추체와 유착된 상태에서 보형재의 탈락을 저지하고 과도한 힘으로부터 보형재와 추체의 견고한 고정상태를 유지시킴으로써, 보형재의 미끄러짐 현상 또는 탈락현상을 방지할 수 있게 하는 효과를 갖는다. In addition, the implant is fixed between the spine, but the anchor portion protruding in the upper and lower surfaces of the prosthetic member is deeply embedded in the cortical bone of the upper and lower vertebrae to maintain a firm fixation state, in particular, the anchoring portion is adhered to the vertebral vertebrae By preventing the fall of the prosthesis in the state and maintaining the rigid fixing state of the prosthetic member and the vertebral body from excessive force, it is possible to prevent the phenomenon of slip or fall of the prosthesis.

이하, 본 발명의 구성 및 작용을 첨부된 도 3 내지 도 8을 참조하여 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention will be described with reference to FIGS. 3 to 8.

먼저, 도 3 내지 도 5는 본 발명에 따른 추간체 고정 보형재(110)의 제1실시예로서, 도시된 바와 같이 중공형 몸체(101)의 상, 하부면에는 다수 개의 뾰족한 고정돌기(102)가 일정하게 돌출성형되어 있으며, 상기한 고정돌기(102)는 좌측 상, 하부와 우측 상, 하부에 다수 개가 연계형성되어 고정돌기군(102a)을 형성하게 된다.First, Figures 3 to 5 is a first embodiment of the intervertebral fixing prosthesis 110 according to the present invention, as shown in the upper, lower surface of the hollow body 101 a plurality of pointed fixing projections 102 ) Is a constant protrusion molded, the fixing protrusion 102 is formed on the left, upper and lower right, a plurality of the linkage is formed to form a fixed protrusion group (102a).

본 발명에서는 도 3에 도시된 바와 같이 일측 군을 형성하는 고정돌기(102)들의 타측 끝단과 타측 군을 형성하는 고정돌기(102)들의 일측 끝단에 지지부(103) 및 끼움부(104)와 걸림부(105)로 이루어지는 앵커부(106)가 돌출되게 성형되는 바, 지지부(103)는 ‘l’자형으로 기립된 단면을 가지며, 일정한 단면을 갖도록 몸체(110)의 전, 후 방향을 따라 연장 형성된다.In the present invention, as shown in Figure 3, the other end of the fixing protrusions 102 forming one side and the one end of the fixing protrusions 102 forming the other side support 103 and the fitting portion 104 and the engaging The anchor portion 106 formed of the portion 105 is formed to protrude, and the support portion 103 has a cross section standing up in a 'l' shape and extends along the front and rear directions of the body 110 to have a constant cross section. Is formed.

그리고, 상기 끼움부(104)는 지지부(103)의 끝단에서부터 상부를 향하여 뾰 족하게 형성된 부분인데, 이 끼움부(104)의 상단이 ‘∧’과 같이 뾰족한 형상으로 형성되어야만 끼움부(104) 및 지지부(103)가 상, 하부 추체(109a)(109b)에 용이하게 끼워질 수 있다. In addition, the fitting portion 104 is a portion formed sharply from the end of the support portion 103 toward the upper portion, the upper portion of the fitting portion 104 should be formed in a pointed shape such as '∧' the fitting portion 104 And the support portion 103 can be easily fitted to the upper, lower vertebral bodies (109a, 109b).

한편, 상기 끼움부(104)의 하부 즉, 지지부(103)의 상부에는 끼움부(104)가 추체에 꽂힌 상태에서 하향으로 또는 상향으로 탈락(분리)되는 것을 방지하기 위하여 단턱이 형성된 걸림부(105)가 형성되게 한다.On the other hand, the lower portion of the fitting portion 104, that is, the upper portion of the support portion 103 in the state in which the fitting portion 104 is inserted into the vertebrae in order to prevent falling (separation) downward or upward (separation) 105) is formed.

여기서, 상기 지지부(103) 및 앵커부(106)는 몸체(101)의 상, 하부면에서 몸체(101)를 중심으로 도 3과 같이 대칭되게 2개씩 형성되게 하는 것이 바람직하며, 도 5에 도시된 바와 같이 끼움부(104)의 위쪽 선단을 면취시켜 면취부(107)가 형성되게 함으로써, 추체에 끼움부(104)가 꽂힐 때, 뾰족한 부분(날카로운 부분)에 의하여 추체에 균열이 발생하는 현상이 미연에 방지되게 하는 것이 바람직하다.Here, the support portion 103 and the anchor portion 106 is preferably formed to be two symmetrically as shown in FIG. 3 around the body 101 on the upper and lower surfaces of the body 101, shown in FIG. As described above, the upper end of the fitting portion 104 is chamfered so that the chamfering portion 107 is formed, so that when the fitting portion 104 is inserted into the vertebral body, a crack occurs in the vertebral body by a sharp part (sharp part). It is desirable to prevent this in advance.

그리고, 도 4에 도시된 바와 같이 끼움부(104)의 상단을 ‘∧’자로 커팅하되, 이 커팅된 부분이 길이방향을 따라 연계형성될 수 있도록 함으로써, 다수개의 돌기부(108)가 끼움부(104)의 상단에 형성되게 하여 끼움부(104)가 추체에 꽂혀진 상태에서 길이방향을 따라 흔들리거나 슬라이딩되는 현상을 방지하여, 이격공간 또는 틈의 발생이 미연에 방지되도록 하는 것이 바람직하다.And, as shown in FIG. 4, the upper end of the fitting portion 104 is cut into '∧', so that the cut portion can be linked to form along the longitudinal direction, the plurality of protrusions 108 is fitted ( It is preferable to prevent the phenomenon of shaking or sliding along the longitudinal direction in the state in which the fitting portion 104 is inserted into the vertebral body so as to be formed at the upper end of the 104, so that the occurrence of the separation space or the gap is prevented in advance.

따라서, 본 발명에 따른 제1실시예는 도 5에 도시된 바와 같이 상부 추체(109a)의 피골질과 하부 추체(109b)의 피골질사이에 삽입되며, 이때, 상기 피골질에는 몸체(101)의 상, 하부면에 형성된 다수 개의 고정돌기(102)가 끼워지고, 몸체(101)의 상, 하부면에 이격형성된 한 쌍의 앵커부(106)가 피골질에 끼워진 상태 에서 걸림부(105)가 보형재(110)의 탈락을 방지시키게 되므로 안전하고 안정된 고정상태가 지속될 수 있게 되는 것이다.Accordingly, the first embodiment according to the present invention is inserted between the cortical bone of the upper vertebral body 109a and the cortical bone of the lower vertebral body 109b as shown in FIG. 5, wherein the cortical body has a body 101. A plurality of fixing protrusions 102 formed on the upper and lower surfaces of the body 101 are fitted, and the engaging portion 105 is fitted to the corrugate with a pair of anchor portions 106 spaced apart from the upper and lower surfaces of the body 101. Since it prevents the fall of the prosthetic member 110 will be able to maintain a safe and stable fixed state.

도 4에 도시된 바와 같이, 앵커부(106)는 몸체(101)의 전방 및/또는 후방 모서리에서 일정 거리(t)로 약간 간격을 두고 안쪽에서부터 형성된다. 그 이유는, 앵커부(106)에 대응되는 홈(KEEL)이 추체에 형성되는데, 이 홈(KEEL)은 추체의 상, 하면을 깎아냄으로써 형성되는 것이므로 따라서 추체의 전면 끝에서 후면 끝까지 홈(KEEL)이 형성될 경우에는 추체에 균열이 발생하거나 추체가 파손될 염려가 있기 때문이다. 이와 같은 기술 사상은 아래에서 기술되는 실시예에서도 동일하다.As shown in FIG. 4, the anchor portion 106 is formed from the inside at some distance t from the front and / or rear edges of the body 101 at some distance t. The reason is that the groove KEEL corresponding to the anchor portion 106 is formed in the vertebra, which is formed by cutting off the upper and lower surfaces of the vertebra, and thus the groove KEEL from the front end to the rear end of the vertebra. This is because there is a risk of cracks or breakage of the vertebral bodies when) is formed. This technical idea is the same in the embodiments described below.

한편, 본 발명에 따른 제2실시예는 도 6 내지 도 8에 도시된 바와 같으며, 도 6에 도시된 바와 같이 중공형 몸체(101)의 상, 하부면에는 다수 개의 뾰족한 고정돌기(102)가 돌출성형되어 있으며, 상기한 고정돌기(102)는 좌측 상, 하부와 우측 상, 하부에 다수 개가 연계형성됨으로써, 고정돌기(102) 군이 형성된다는 점과, 일측 군을 형성하는 고정돌기(102)들의 타측 끝단과 타측 군을 형성하는 고정돌기(102)들의 일측 끝단에 지지부(103), 끼움부(104) 및 걸림부(105)로 이루어진 앵커부(106)가 돌출되게 성형되는 바, 지지부(103)의 구성은 제1실시예와 동일하다.On the other hand, the second embodiment according to the present invention is as shown in Figures 6 to 8, as shown in Figure 6 the upper and lower surfaces of the hollow body 101 a plurality of pointed fixing projections 102 Is formed by the protrusion, the fixing protrusion 102 is formed on the left, the bottom and the right, a plurality of lower linkages, the group of the fixing protrusion 102 is formed, and the fixing protrusion forming one side group ( Anchors 106 consisting of a support part 103, a fitting part 104, and a locking part 105 are formed to protrude from one end of the fixing protrusions 102 forming the other end and the other end of the bar 102. The structure of the support part 103 is the same as that of 1st Embodiment.

여기서, 상기 끼움부(104)는 지지부(103)의 끝단에서부터 상부를 향하여 뾰족하게 형성된 부분을 말하며, 이 끼움부(104)의 상단이 ‘∧’과 같이 뾰족한 형상으로 형성되어야만 끼움부(104) 및 지지부(103)가 상, 하부 추체에 용이하게 꽂힐 수 있게 되는 것이다.Here, the fitting portion 104 refers to a portion formed pointed toward the top from the end of the support portion 103, the upper portion of the fitting portion 104 should be formed in a pointed shape, such as '∧' fitting portion 104 And the support 103 is to be easily plugged into the upper, lower vertebrae.

그러나, 상기 끼움부(104)의 하부 즉, 지지부(103)의 상부 내, 외측면 중 어 느 하나에는 끼움부(104)가 추체에 꽂힌 상태에서 하향으로 또는 상향으로 탈락(분리)되는 것을 방지하기 위하여 단턱이 형성된 걸림부(105)가 형성되는 것이 제1실시예와 상이하며, 상기한 걸림부(105)는 내측면에 형성될 수도 있으며, 도 6에 도시된 바와 같이 외측면에만 형성될 수도 있는 것으로, 본 발명은 걸림부(105)의 위치를 제작자 임의대로 선정하여 형성시킬 수 있다. 즉, 본 제2실시예에서 걸림부(105)는 좌, 우측 어느 한 방향으로만 형성된다는 점이 제1실시예와 상이하다.However, the lower portion of the fitting portion 104, that is, the upper portion of the upper portion of the support portion 103, to prevent any dropping (separation) downward or upward in the state in which the fitting portion 104 is inserted into the vertebral body. It is different from the first embodiment in that the stepped portion 105 is formed to be formed in order to be formed on the inner side, the locking portion 105 may be formed only on the outer side, as shown in FIG. In another aspect, the present invention can be formed by selecting the position of the locking portion 105 as the manufacturer. That is, in the second embodiment, the locking portion 105 is different from the first embodiment in that it is formed only in one of left and right directions.

여기서, 상기 지지부(103) 및 앵커부(106)는 몸체(101)의 상, 하부면에서 몸체(101)를 중심으로 도 6과 같이 대칭되게 2개씩 형성되게 하는 것이 바람직하며, 끼움부(104)의 상단을 도 8에 도시된 바와 같이 면취시켜 면취부(107)가 형성되게 함으로써, 상, 하부 추체(109a)(109b)에 끼움부(104)가 꽂힐 때, 뾰족한 부분(날카로운 부분)에 의하여 추체에 균열이 발생하는 현상이 미연에 방지되게 하는 것이 바람직하다.Here, the support portion 103 and the anchor portion 106 is preferably to be formed symmetrically two as shown in FIG. 6 around the body 101 on the upper and lower surfaces of the body 101, the fitting portion 104 By chamfering the upper end of) as shown in FIG. 8 so that the chamfered portion 107 is formed, when the fitting portion 104 is inserted into the upper and lower vertebral bodies 109a and 109b, the pointed portion (sharp portion) Therefore, it is desirable to prevent the phenomenon of cracking in the vertebrae in advance.

그리고, 도 7에 도시된 바와 같이 끼움부(104)의 상단을 ‘∧’자로 커팅하되, 이 커팅된 부분이 길이방향을 따라 연계형성될 수 있도록 함으로써, 다수개의 돌기부(108)가 끼움부(104)의 상단에 형성되게 하여 끼움부(104)가 추체에 꽂혀진 상태에서 길이방향을 따라 흔들리거나 슬라이딩되는 현상을 방지하여, 이격공간 또는 틈의 발생이 미연에 방지되도록 하는 것이 바람직하다.And, as shown in Figure 7, the upper end of the fitting portion 104 is cut into '∧', so that the cut portion can be linked to form along the longitudinal direction, the plurality of protrusions 108 is fitted ( It is preferable to prevent the phenomenon of shaking or sliding along the longitudinal direction in the state in which the fitting portion 104 is inserted into the vertebral body so as to be formed at the upper end of the 104, so that the occurrence of the separation space or the gap is prevented in advance.

따라서, 본 발명에 따른 제2실시예는 도 8에 도시된 바와 같이 상부 추체(109a)의 피골질과 하부 추체(109b)의 피골질사이에 삽입되며, 이때, 상기 피골질에는 몸체(101)의 상, 하부면에 형성된 다수 개의 고정돌기(102)가 끼워지고, 몸 체(101)의 상, 하부면에 이격형성된 한 쌍의 앵커부(106)가 피골질에 끼워진 상태에서 걸림부(105)가 보형재(110)의 탈락을 방지시키게 되므로 안전하고 안정된 고정상태가 지속될 수 있게 되는 것이다.Accordingly, the second embodiment according to the present invention is inserted between the cortical bone of the upper vertebral body 109a and the cortical bone of the lower vertebral body 109b, as shown in FIG. A plurality of fixing protrusions 102 formed on the upper and lower surfaces of the upper and lower surfaces of the upper and lower surfaces of the upper and lower surfaces of the body 101 are fitted to the corrugated bone. ) Will prevent the fall of the prosthetic member 110 will be able to maintain a safe and stable fixed state.

도 1은 종래 추간체 고정 보형재를 도시한 사시도, 1 is a perspective view showing a conventional intervertebral fixing prosthesis,

도 2는 종래의 추간체 고정 보형재와 페디클 스크류가 시술된 상태를 촬영한 X-ray 사진. Figure 2 is an X-ray photograph taken a state where the conventional intervertebral fixation prosthesis and the pedicle screw is performed.

도 3은 본 발명에 따른 추간체 고정 보형재의 제1실시예를 도시한 사시도.Figure 3 is a perspective view showing a first embodiment of the intervertebral fixing prosthesis according to the present invention.

도 4는 본 발명에 따른 추간체 고정 보형재의 제1실시예의 다른 구조를 도시한 사시도.Figure 4 is a perspective view showing another structure of the first embodiment of the intervertebral fixing prosthesis according to the present invention.

도 5는 본 발명에 따른 추간체 고정 보형재의 제1실시예가 추체에 시술된 상태를 도시한 단면도.Figure 5 is a cross-sectional view showing a state in which the first embodiment of the intervertebral fixing prosthesis according to the present invention was performed on the vertebral body.

도 6은 본 발명에 따른 추간체 고정 보형재의 제2실시예를 도시한 사시도.Figure 6 is a perspective view showing a second embodiment of the intervertebral fixing prosthesis according to the present invention.

도 7은 본 발명에 따른 추간체 고정 보형재의 제2실시예의 다른 구조를 도시한 사시도.Figure 7 is a perspective view showing another structure of the second embodiment of the intervertebral fixing prosthesis according to the present invention.

도 8은 본 발명에 따른 추간체 고정 보형재의 제2실시예가 추체에 시술된 상태를 도시한 단면도.8 is a cross-sectional view showing a state in which the second embodiment of the intervertebral fixing prosthesis according to the present invention is performed on the vertebral body;

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

101 : 몸체 102 : 고정돌기101: body 102: fixing protrusion

103 : 지지부 104 : 끼움부103: support portion 104: fitting portion

105 : 걸림부 106 : 앵커부105: engaging portion 106: anchor portion

107 : 면취부 108 : 돌기부107: chamfering 108: protrusion

109a : 상부 추체 109b : 하부 추체109a: upper body 109b: lower body

Claims (4)

추체 사이에 끼워져 고정되는 추간체 고정 보형재에 있어서, In the intervertebral fixation prosthesis that is sandwiched and fixed between the vertebrae, 몸체의 전, 후 방향으로 상기 몸체의 상, 하부에 연속되게 돌출 형성되는 지지부; 및 A support part continuously protruding from the upper and lower parts of the body in the front and rear directions of the body; And 상기 지지부의 상부에 뾰족하게 연장형성되는 끼움부와, 상기 끼움부로부터 몸체를 향하여 끼움부의 측부에 돌출되게 연장 형성되는 탈락 방지용 걸림부를 갖는 앵커부;를 포함하여 이루어지는 것을 특징으로 하는 추간체 고정 보형재. Intervertebral fixing beam, characterized in that it comprises a; anchoring portion having a sharply extending portion formed on the upper portion of the support portion, and an anti-fallout engaging portion extending to protrude from the fitting portion toward the body from the fitting portion; Brother. 제1항에 있어서, The method of claim 1, 상기 끼움부의 상부에 면취부가 형성된 것을 특징으로 하는 추간체 고정 보형재. Intervertebral fixing prosthesis, characterized in that the chamfered portion formed on the upper portion of the fitting. 제2항에 있어서, The method of claim 2, 상기 앵커부의 상부에서 길이방향을 따라 연계형성되는 뾰족한 형상으로 이루어진 다수 개의 돌기부;를 더 포함하는 것을 특징으로 하는 추간체 고정 보형재. Intervertebral fixing prosthesis further comprising; a plurality of protrusions formed in a pointed shape linked to the longitudinal direction in the upper portion of the anchor. 제1항 내지 제3항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 3, 상기 지지부 및 앵커부가 몸체의 상, 하부에서 몸체를 중심으로 서로 대칭되게 각각 2개씩 형성된 것을 특징으로 하는 추간체 고정 보형재. The intervertebral fixing prosthesis, characterized in that the support and the anchor portion are formed in each of the upper and lower parts of the body symmetrically with respect to each other.
KR1020070079514A 2007-04-18 2007-08-08 Artificial Disk for Anterior Lumbar Interbody Fusion KR100881592B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010148186A1 (en) * 2009-06-17 2010-12-23 Synthes Usa, Llc Intervertebral implant
WO2011135377A1 (en) * 2010-04-29 2011-11-03 Finsbury (Development) Limited Prosthesis
US10610373B2 (en) 2016-10-04 2020-04-07 Medyssey Co., Ltd. Spinal complex cage
EP3925578A1 (en) * 2016-09-13 2021-12-22 Warsaw Orthopedic, Inc. Interbody spinal fusion device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2799639B1 (en) * 1999-10-18 2002-07-19 Dimso Sa TOOTHED FACED INTERVERTEBRAL DISC PROSTHESIS

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010148186A1 (en) * 2009-06-17 2010-12-23 Synthes Usa, Llc Intervertebral implant
US8617244B2 (en) 2009-06-17 2013-12-31 DePuy Synthes Products, LLC Intervertebral implant
WO2011135377A1 (en) * 2010-04-29 2011-11-03 Finsbury (Development) Limited Prosthesis
CN102883687A (en) * 2010-04-29 2013-01-16 芬斯贝利(发展)有限责任公司 Prosthesis
CN102883687B (en) * 2010-04-29 2016-03-02 芬斯贝利(发展)有限责任公司 Prosthese
EP3925578A1 (en) * 2016-09-13 2021-12-22 Warsaw Orthopedic, Inc. Interbody spinal fusion device
US11666452B2 (en) 2016-09-13 2023-06-06 Warsaw Orthopedic, Inc. Interbody spinal fusion device
US10610373B2 (en) 2016-10-04 2020-04-07 Medyssey Co., Ltd. Spinal complex cage

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