M314034 八、新型說明： 【新型所屬之技術領域】 本創作係有關一種人工椎間盤’尤指一種用來治療 椎間盤退化性疾病之磨耗型人工椎間盤，在植入人體内 後，將可重建之塌陷椎間盤的原有高度，同時提供手術 區域之椎間盤自然的活動能力與運動範圍，如此可消除 脊髓或神經根的壓迫，並且避免傳統椎骨間骨融合椎籠 手術所引起的周圍椎間盤加速退化問題。 【先前技術】 近年來，人工椎間盤（Artificial Disc)已經開始 進行臨床使用，用以治療椎間盤退化性疾病 (Degenerative Disc Disease)。目前市面上可見的人 工椎間盤有遇水可凝固的（Hydraul ic)型式、彈性的 (Elastic)型式、液動的（Hydrostatic)型式與磨耗的 (Wear)型式等。此類的人工椎間盤不僅可以達到重建塌 陷椎間盤高度的治療目的，同時也可以使受治療區椎間 盤的活動度不致於減少。 請參閱第一圖所示，一種傳統磨耗型人工椎間盤， 用以提供屈曲、伸展、侧彎及扭轉的,脊椎運動模式，其 包括一上盤1 〇、一下盤1 1及一核體1 2。該核體1 2上方為球狀凸起部1 2 0，用以接觸該上盤1 〇底部 之凹槽1 0 0，該核體1 2下方為方形平面1 2 2，用 以嵌入並固定於該下盤1 1頂部之嵌槽1 1 〇。上、下 5 M314034 盤1 ο、1 1的外表面具有齒狀物工〇 2、工工2，使 其嵌入椎骨内，讓人工椎間盤不易滑出。所述之磨耗型 人工椎間盤雖然可以恢復脊椎的活動度，但是由於該核 體1 2的頂口ρ與該上盤1 〇的底部之間無任何限制的 機構設計，因此不能有效的限制該上盤1 Q過度的作屈 曲及側彎的脊椎運動模式，且該上盤1 0的底部與該核 體1 2的頂部之間無任何擋止結構，該上盤丄〇與該核 體1 2之間容易因過大的脊椎運動或磨耗變薄而導致 彼此脫位（Dislocation)。 明芩閱第二圖所示，另一種傳統磨耗型人工椎間 盤，其包括一上盤2〇、一下盤2 2及一核體22。該 核體2 2之頂部及底部分別具有一球狀凸起部& 2 〇，用以分別接觸於上盤2 〇底部的凹槽2 〇 〇及下盤 2 1頂部的凹槽2 i 〇。上盤2 〇的頂部表面及下盤2 1的底部表面分別設有齒狀物2 〇 2、2丄2，使其嵌 入鄰近之椎骨内，以增加人工椎間盤的穩定度。所述之 另一種傳統磨耗型人工椎間盤，由於該核體2 2的頂部 及底部與上盤2 〇的底部及下盤2 i的頂部分別為近 球面關節的接觸形式，因此具有可屈曲、伸展、侧彎及 "扭轉的運動模式，但是由於該核體2 2的頂部與該上盤 2 0的底部之間，以及該核體2 2的底部與該下盤2工 的頂部之間無任何限制的機構設計，因此無法有效的限 制该上盤2 〇及該下盤2 1過度的作屈曲及侧彎的脊 椎運動模式，且該上盤2 〇的底部與該核體2 2的頂部 之間’以及該下盤2 1的頂部及該核體2 2的底部之間 M314034 無任何擋止結構'，該上、下盤2 Q、2 i與該核體^ 2 之間容易因過大的脊椎運動或磨耗變薄而導致彼 位。 再者，在中華民國專利M258715中，揭露一 椎間盤，其包括一上蓋、一下蓋及一組合件，該 =於該上蓋與該下蓋之間，該上蓋與該下蓋分別料 了„面滑動接觸及滾動接觸，用以提供人 -兩含椎月之間的屈曲、側f的運動模式，然而所述之 人工椎間盤無法提供扭轉的運動模式，因使 受到限制。 從用上仍 動的f人T面’所述之人工椎間盤的上、下蓋與中間移 3=之間的結合，是利用上、下蓋外表面的中間 ς為：凸件，而該組合件頂、底表面的中間 槽，各凸件與各凹槽形成一士 件的户声續ΓΠ 士 : 卡機構。但是由於該組合 =2:，同時通常為強度較差的塑膠塊材質，因此 :二底表面的中間挖成凹槽狀可能會造成破 曰于处之人工椎間盤的使用壽命縮短。 實際由上可知’上述傳統磨耗型人工椎間盤，在 7 ，顯然:具有不便與問題存在，而可待加以改 s 研办緣ri本創作人有感上述缺失之可改善，乃特潛心 改盖 之運用，終於提出一種設計合理且有效 改善上述問題之本創作。 旁双 M314034 【新型内容】 本創作之主要目的在於提供一種低磨耗度且能夠 保持椎間盤活動度的人工椎間盤，其利用特殊關節弧面 的安排，以降低人工椎間盤在植入體内後所產生的磨屑 量，因此可避免手術後周圍骨組織的骨溶解反應 (Osteolysi s)，同時也能夠保留手術區域之椎間盤原有 的活動度，例如屈曲（Flexion/Extension)、扭轉（Axial Twisting)與侧彎（Lateral Bending)等，如此可降低其 他骨融合手術所引起的周圍椎間盤與小面關節（Facet Joint)發生老化加速之問題（juncti〇nai pr〇biem)。 本創作之次要目的在於提供一種低磨耗度且能夠 保持椎間盤活動度的人工椎間盤，其利用轴件及導槽的 a又计，用以限制人工椎間盤前後屈曲及左右侧彎的活動 範圍。 本創作之另一次要目的在於提供一種低磨耗度且 能夠保持椎間盤活動度的人工椎間盤，其設有擋止結 構，用以避免因過大脊椎的運動或磨耗變薄而導致零件 脫位（Dislocat ion) ° 為達上述之主要目的，本創作之一種人工椎間盤， 其包括：一上蓋，其底部凹設有一第一空間，該第_空 間相對的兩側各形成有一第一擋止面，該第一空間内形 成第一弧面，該第一弧面内設有一第一導槽；一下 盍其頂部凹設有一第二空間，該第二空間相對的兩側 口形成有一第二擂止面，該第二空間内形成一第二弧 M314034 面，该第二弧面内設有一第二導槽；及一組合件，其頂 口 I5及底邻为別形成有一第三弧面及一第四弧面分別對 f於第一弧面及第二弧面，該第三弧面及第四弧面分別 設有一第一轴件及一第二軸件； 其中該組合件設置於上蓋與下蓋之間，該第三弧面 與該^一弧面之間透過該第一軸件與該第一導槽的配 合作前後方向的滑動接觸，而該第四弧面與該第二弧面 之間透過第二軸件與第二導槽的配合作左右方向的滑 動接觸及轴向的轉動接觸，該組合件相對的兩侧及另相 對的兩侧各形成有一第三擋止面及一第四擋止面，該第 二擋止面及第四擋止面分別接觸於該 二擒止面，藉此，該上蓋的第一弧面與該組合件= 弧面之間以及该下蓋的第二弧面與該組合件的第四弧 面之間具有較大之接觸面積，因此可減少接觸應力，進 而降低磨耗量。 再者，該組合件與相鄰的上、下蓋藉由軸件及導栌 =配合，各自負責不同的運動自由度，以減少該組合件 及该上、下蓋之間相互滑移摩擦的機會 降低該組合件及該上、下蓋之間的磨耗量，並且限= 工椎間盤前後屈曲及左右侧f的活動範圍。 擗丄外上、下蓋與該組合件之間的擋止面，用以 避免该組合件脫離該上、下蓋。 取之技二 參:= M314034 =與_，相信本創作之目的、特徵與特點，當可由 ㈣之瞭解’然而所附圖式僅提供參考與 並非用來對本創作加以限制者。 〃 【實施方式】 般，，f第三圖至第七圖’本創作提供—種人工椎間 ΐ务1別是指—種磨耗型人工椎間盤，用來治療椎間盤 =，病，在植入人體内後，將可重建塌陷之椎間盤 t原有兩度，同時提供手術區域之椎間盤自然的活動能 、與運動範圍，如此可消除脊髓或神經根的壓迫，並且 I免傳、、先椎月間骨融合椎籠手術所引起的周圍椎間盤 加速退化問題。所述之人工椎間盤包括一上蓋3 0、一 下蓋3 1及一組合件3 2。 该上蓋3 0的外緣設有組裝孔3〇〇,該上蓋3〇 =頂部設有多數個卡合齒3 〇 2，該上蓋3 〇的底部凹 设有一第一空間3 〇 4。該第一空間3 〇 4相對的兩侧 各形成有一第一擂止面3〇6,該第一空間3〇4内形 成一第一弧面3 0 8，該第一弧面3 〇 8内設有一前後 方向的第一導槽3 〇9。 該下蓋3 1的外緣設有組裝孔3 1 〇，該下蓋3 1 的底部設有多數個卡合齒3 1 2，該下蓋3 1的頂部凹 设有一第二空間3 1 4，如第四圖所示。該第二空間3 1 4相對的兩側各形成有一第二擋止面3 16，該第二 空間3 1 4内形成一第二弧面3 1 8，該第二弧面3 1 M314034 8内設有一第二導槽3 1 9。 该組合件3 2的頂部及底部分別形成有一第：弧 ，◦及一第四弧面3 2 2，該第三孤面32 = 弟四弧面3 2 2分別對應於該第-弧面3 0 8及該第 5Γ面3 1 8。§亥第二弧面3 2 0及第四弧面3 2 2的 ，，別設有—方柱形的第—軸件3 2 4及—圓柱形 弟二軸件3 2 6。 f組合時’該組合件3 2設置於該上蓋3 〇與該下 盍“之間，該第三弧面3 2 〇與該第一弧面3 〇 8之 :透過該第，轴件3 2 4與該第-導槽3 〇 9的配 蓋3 〇在該組合件3 2的頂部作前後方向的 :動接觸’如第六圖所#。在本實施例中，㈣一弧面 !〇 8與該第三弧面3 2 ◦之間呈拱形弧面的接觸配 °形成本創作之人工椎間盤的上關節面，用以提供整 體機構前後屈曲的活動自由度，同時透過該第一轴们 f4及該第-導槽3〇9,用以限制該上蓋3〇前後屈 的活動範圍。而該第四弧面3 2 2與該第二弧面3工 !之間透過第二轴件3 2 6與第二導槽3工9的配 二使該下蓋3 1在該組合件3 2的底部作左右方向的 ’月動接觸界軸向的轉動接觸。 在本^例中，該第二弧面3 1 8與該第四弧面3 2之間呈圓形弧面的接觸配合，形成本創作之人工椎 間盤的下關節面，用以提供整體機構可軸向扭轉與左右 側彎的活動自由度，同時透過該第二軸件3 2 6及該第 11 M314034 二導：3 1 9,用以限制該下蓋3工左右屈曲的活動範 圍如此，本創作之人工椎間盤將可能的磨耗機制分 :::關節面來進行，因此可以降低單一關節面需同時 承又夕方向滑移所產生的磨屑量，藉此來避免可 的骨溶解效應。 者L該組合件3 2相對的兩側及另相對的兩側各 :一，第二擋止面3 2 8及一第四擋止面3 2 9，該 2 8及第四擋止面3 2 9分別接觸於該 ::擋止面3 〇 6及第二擋止面3工6，用以避免㈣ 2 3 2因過大的脊椎運動或磨耗變薄而脫離上莫 3 〇、3 1。 明，閱第八圖所示，為本創作之人工 Z脊椎骨之間之示意圖。在手術時，利用二： 椎間盤的手術器械（圖未示），***於該上蓋3 使上=下蓋3 1外緣的組裝孔3 0 0、3 1 ◦，並 30的頂部與下蓋3 1的底部與將要手術之椎 骨貼合。在本實施例中，上蓋3〇 工:I3 1的底部透過突出的卡合齒3 0 2、3 而兩脊椎骨之間，來達到機械固定的目的。然 ^例僅為本創作之較佳實 0的頂部表面及下蓋3丄的底邻矣品山J 基磷灰石。上Μ ηα ^ 表也可以塗覆氫氧 透恐〇 i +豈3 〇的頂^表面及下蓋3 1的底部表面 透過虱氧基磷灰石分別貼合於 物固定 Μ近之含椎骨，來達到生 12 M314034 綜上所述，本創作提供一種磨耗型人工椎間盤，其 主要優點包括： 〃 (1)上、下蓋與組合件之間具有較大之接觸面積， 因此可減少接觸應力，進而降低磨耗量； > (2)組合件與相鄰上、下蓋之上下關節面也具有特 殊α汁的軸件及導槽等結構，來限制人工椎間盤活動度 的大】、，各自負責不同的運動自由度，因此可減少關節M314034 VIII. New description: [New technical field] This creation is about an artificial intervertebral disc, especially a wear-type artificial intervertebral disc used to treat degenerative disc disease. After implantation in the human body, it will be able to reconstruct the collapsed intervertebral disc. The original height, while providing the natural mobility and range of motion of the intervertebral disc in the surgical field, can eliminate the compression of the spinal cord or nerve roots, and avoid the problem of accelerated degeneration of the surrounding intervertebral disc caused by traditional intervertebral fusion cage surgery. [Prior Art] In recent years, artificial discs have been clinically used for the treatment of Degenerative Disc Disease. The artificial intervertebral discs currently available on the market are available in water-resistant (Hydraul ic) type, Elastic type, Hydrostatic type and Wear type. Such artificial intervertebral discs can not only achieve the therapeutic purpose of reconstructing the height of the collapsed intervertebral disc, but also can reduce the activity of the intervertebral disc in the treated area. Referring to the first figure, a conventional wear-type artificial intervertebral disc is provided for providing flexion, extension, side-bending and torsion, and a spinal motion pattern comprising an upper disc 1 , a lower disc 1 1 and a nuclear body 1 2 . The core body 1 2 is a spherical protrusion 1 120 for contacting the groove 100 of the bottom of the upper disk 1 , and the core body 12 is a square plane 1 2 2 for embedding and fixing. The groove 1 1 顶部 at the top of the lower plate 1 1 . Upper and lower 5 M314034 The outer surface of the disc 1 ο, 1 1 has a toothing work 2, the workman 2, so that it is embedded in the vertebrae, so that the artificial intervertebral disc is not easy to slide out. Although the wear-type artificial intervertebral disc can restore the mobility of the spine, since there is no restriction mechanism between the top end ρ of the core body 12 and the bottom of the upper disc 1 ,, the upper side cannot be effectively limited. The disk 1 Q is excessively subjected to a buckling and side-bending spinal motion mode, and there is no blocking structure between the bottom of the upper disk 10 and the top of the core body 12, and the upper disk and the core body 1 2 It is easy to dislocate each other due to excessive spine movement or thinning of wear. As shown in the second figure, another conventional wear type artificial intervertebral disc includes an upper disc 2, a lower disc 22 and a core 22 . The top and bottom of the core body 2 2 respectively have a spherical protrusion & 2 〇 for contacting the groove 2 〇〇 at the bottom of the upper plate 2 and the groove 2 i at the top of the lower plate 2 1 respectively. . The top surface of the upper disc 2 and the bottom surface of the lower disc 2 1 are respectively provided with teeth 2 〇 2, 2 丄 2 so as to be embedded in the adjacent vertebrae to increase the stability of the artificial intervertebral disc. The other conventional wear-type artificial intervertebral disc has buckling and stretching because the top and bottom of the core body 22 are in contact with the bottom of the upper disc 2 and the top of the lower disc 2 i respectively. , side bend and "twisted motion mode, but since there is no between the top of the core body 22 and the bottom of the upper plate 20, and between the bottom of the core body 22 and the top of the lower disk 2 Any limited mechanism design, therefore, can not effectively limit the upper disc 2 〇 and the lower disc 2 1 excessive flexion and side bends of the spine movement mode, and the bottom of the upper disc 2 与 and the top of the core body 2 2 Between the 'and the top of the lower plate 2 1 and the bottom of the core 2 2 without any blocking structure', the upper and lower disks 2 Q, 2 i and the core body 2 are easily too large The spine movement or wear thinning leads to the other. In addition, in the Republic of China Patent No. M258715, an intervertebral disc is disclosed, which comprises an upper cover, a lower cover and a combination member, between the upper cover and the lower cover, the upper cover and the lower cover respectively are coated with a surface sliding Contact and rolling contact to provide a pattern of flexion and lateral f between the human and the two, but the artificial intervertebral disc cannot provide a torsional motion pattern, which is limited by the use. The combination between the upper and lower covers of the artificial intervertebral disc and the intermediate shift 3= described by the human T-face is that the middle ridge of the outer surface of the upper and lower covers is: a convex member, and the middle of the top and bottom surfaces of the assembly The groove, each convex piece and each groove form a member of the household. Continued: The card mechanism. However, since the combination = 2:, at the same time, it is usually a poor strength plastic material, so the middle of the bottom surface is dug. The groove shape may cause the shortened service life of the artificial intervertebral disc to be broken. Actually, it can be seen that the above-mentioned traditional wear-type artificial intervertebral disc, at 7 , obviously: has inconvenience and problems, but can be changed to Ri creator I feel that the above-mentioned lack of improvement can be improved, and I finally propose a design that is reasonable in design and effective in improving the above problems. Side-by-side M314034 [New content] The main purpose of this creation is to provide a low wear and maintain The artificial intervertebral disc with intervertebral disc mobility uses a special joint arc surface arrangement to reduce the amount of wear debris generated by the artificial intervertebral disc after implantation in the body, thereby avoiding the osteolysis reaction (Osteolysi s) of the surrounding bone tissue after surgery. At the same time, it can also preserve the original mobility of the intervertebral disc in the surgical field, such as Flexion/Extension, Axial Twisting and Lateral Bending, which can reduce the peripheral intervertebral disc and other small bone fusion surgery. The problem of accelerated aging of the facet joint (juncti〇nai pr〇biem). The second objective of this creation is to provide an artificial intervertebral disc with low wear and maintaining the mobility of the intervertebral disc, which utilizes the shaft and the guide groove. a, in order to limit the range of motion of the artificial intervertebral disc before and after flexion and left and right side bends. Another objective is to provide an artificial intervertebral disc that is low in wear and capable of maintaining the mobility of the disc. It is provided with a stop structure to avoid dislocation of the part due to excessive movement or wear of the spine. In order to achieve the above-mentioned main purpose, an artificial intervertebral disc of the present invention comprises: an upper cover having a first space recessed at a bottom thereof, and a first stop surface is formed on each of opposite sides of the first space, the first space a first curved surface is formed in the first curved surface; a first guiding groove is disposed in the first curved surface; a second space is recessed in the top of the first curved surface, and a second stopping surface is formed on opposite sides of the second space, the first a second arc M314034 surface is formed in the second space, and a second guiding groove is disposed in the second arc surface; and a combination member has a third arc surface and a fourth arc surface formed by the top opening I5 and the bottom adjacent portion a first shaft member and a second shaft member are respectively disposed on the first arc surface and the second arc surface, wherein the assembly is disposed between the upper cover and the lower cover The third curved surface and the curved surface Through the sliding contact between the first shaft member and the first guiding groove in the front-rear direction, and the matching between the fourth curved surface and the second curved surface through the second shaft member and the second guiding groove The sliding contact and the axial rotation contact, the opposite sides of the assembly and the opposite sides respectively form a third stop surface and a fourth stop surface, the second stop surface and the fourth stop The faces are respectively in contact with the two stop faces, whereby the first curved surface of the upper cover and the assembly = the curved surface and the second curved surface of the lower cover and the fourth curved surface of the assembly have The larger contact area reduces the contact stress and thus the wear. Furthermore, the assembly and the adjacent upper and lower covers are respectively coordinated by the shaft member and the guide member, and each is responsible for different degrees of freedom of movement to reduce the sliding friction between the assembly and the upper and lower covers. The opportunity reduces the amount of wear between the assembly and the upper and lower covers, and limits the range of motion of the intervertebral disc before and after flexion and the left and right sides f. A stop surface between the outer upper and lower covers and the assembly for preventing the assembly from being detached from the upper and lower covers. Take the technique 2: = M314034 = and _, believe that the purpose, characteristics and characteristics of this creation can be understood by (4). However, the drawings are only for reference and are not intended to limit the creation. 〃 [Embodiment] As usual, f from the third to the seventh figure 'This creation provides an artificial intervertebral forearm 1 refers to a kind of wear-type artificial intervertebral disc, used to treat intervertebral disc =, disease, implanted in the human body After the inside, the reconstructed intervertebral disc t can be reconstructed twice, while providing the natural activity energy and range of motion of the intervertebral disc in the surgical area, so as to eliminate the compression of the spinal cord or nerve root, and the I-free, first intervertebral bone The problem of accelerated degeneration of the surrounding intervertebral disc caused by fusion cage surgery. The artificial intervertebral disc comprises an upper cover 30, a lower cover 31 and an assembly 32. The outer edge of the upper cover 30 is provided with an assembly hole 3〇〇, and the upper cover 3〇=the top is provided with a plurality of engaging teeth 3 〇 2, and the bottom of the upper cover 3 凹 is recessed with a first space 3 〇 4 . A first stopping surface 3〇6 is formed on each of opposite sides of the first space 3〇4, and a first curved surface 3 0 8 is formed in the first space 3〇4, and the first curved surface is 338 A first guide groove 3 〇9 is provided in a front-rear direction. The outer edge of the lower cover 3 1 is provided with an assembly hole 3 1 〇, the bottom of the lower cover 3 1 is provided with a plurality of engaging teeth 3 1 2 , and a top surface of the lower cover 3 1 is recessed with a second space 3 1 4 As shown in the fourth figure. A second blocking surface 3 16 is formed on opposite sides of the second space 3 1 4 , and a second curved surface 3 1 8 is formed in the second space 3 1 4 , and the second curved surface is 3 1 M314034 8 A second guiding groove 3 1 9 is provided. The top and bottom of the assembly 3 2 are respectively formed with a first arc and a fourth arc surface 3 2 2, and the third orbit 32 = the fourth arc surface 3 2 2 respectively corresponding to the first arc surface 3 0 8 and the 5th face 3 1 8 . § The second arc surface 3 2 0 and the fourth arc surface 3 2 2 are provided with a square-shaped first-axis member 3 2 4 and a cylindrical second-axis member 3 2 6 . When f is combined, the assembly 3 2 is disposed between the upper cover 3 〇 and the lower jaw, the third curved surface 3 2 〇 and the first curved surface 3 〇 8: through the first, the shaft member 3 2 4, the cover 3 of the first guide groove 3 〇9 is in the front-rear direction at the top of the assembly member 3: the movable contact 'as shown in the sixth figure. In the present embodiment, (four) a curved surface! 8 is in contact with the third curved surface 3 2 呈 in an arcuate curved surface to form the upper articular surface of the artificial intervertebral disc of the present invention, to provide the freedom of movement of the whole body before and after flexion, and through the first axis The f4 and the first guiding groove 3〇9 are used to limit the range of motion of the upper cover 3〇, and the second curved surface is connected to the second curved surface 3 2 2 3 2 6 and the second guide groove 3 are arranged such that the lower cover 3 1 is in the axial direction of the lunar contact in the left-right direction at the bottom of the assembly 32. In this example, A circular arc-shaped contact fit between the second curved surface 3 1 8 and the fourth curved surface 3 2 forms a lower articular surface of the artificial intervertebral disc of the present invention for providing axial twisting and left and right side bending of the overall mechanism The degree of freedom of movement, through the second shaft member 3 26 and the 11th M314034 two guides: 3 1 9 , to limit the range of motion of the left and right sides of the lower cover, so that the artificial intervertebral disc of the present creation may wear The mechanism is divided into::: the articular surface is performed, so that the amount of wear debris generated by the single joint surface to be simultaneously slipped in the direction of the yaw can be reduced, thereby avoiding the effect of the bone dissolution. The L is relatively opposed to the assembly 3 2 The two sides and the opposite sides are respectively: a second stop surface 3 2 8 and a fourth stop surface 3 2 9, the 2 8 and the fourth stop surface 3 2 9 respectively contact the:: block The stop surface 3 〇6 and the second stop surface 3 work 6 to avoid (4) 2 3 2 due to excessive spine movement or wear thinning and get rid of the upper 3 〇, 3 1. Ming, as shown in the eighth figure, A schematic diagram of the artificial Z-vertebral bone of the present invention. At the time of surgery, a surgical instrument (not shown) of the intervertebral disc is used, and the assembly hole 3 of the upper edge of the upper/lower cover 3 1 is inserted into the upper cover 3, 3 1 ◦, and the top of the 30 and the bottom of the lower cover 31 are attached to the vertebrae to be operated. In this embodiment, the upper cover 3 is completed: the bottom of the I3 1 is transparent. The protruding teeth are 3 0 2, 3 and between the two vertebrae to achieve the purpose of mechanical fixation. However, the example is only the top surface of the better real 0 of this creation and the bottom of the lower cover 3丄J-based apatite. The upper Μαα ^ table can also be coated with the surface of the top surface of the hydrogen-oxygen permeable 〇i + 岂3 〇 and the bottom surface of the lower cover 3 1 through the methoxy apatite, respectively, attached to the object Μ 之 含 , 12 M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M Therefore, the contact stress can be reduced, thereby reducing the amount of wear; > (2) The assembly and the upper and lower upper and lower articular surfaces of the upper and lower covers also have a special alpha juice shaft and guide groove structure to limit the activity of the artificial intervertebral disc. Large], each responsible for different degrees of freedom of movement, thus reducing joints
面相互π移摩檫的機會與頻率，因此大幅的降低關 的磨耗量；及 —(3)具有特殊之擋止面結構，以避免組合件因過大 的脊椎運動或磨耗變薄而脫離上、下蓋。 二、，准，以上所述，僅為本創作最佳之一的具體實施例 ^评細說明與圖式，惟本創作之特徵並不侷限於此，並 用j限制本創彳乍’本創作之所有範圍應以下述之申請 利範圍為準，凡合於本創作申請專利The mutual π shifts the chance and frequency of the rubbing, thus greatly reducing the amount of wear of the off; and - (3) has a special stop surface structure to avoid the assembly from being detached due to excessive spine movement or wear thinning, lower lid. Second, the standard, as mentioned above, is only one of the best examples of this creation. The description and schema are only limited, and the characteristics of this creation are not limited to this, and j is used to limit the creation of this creation. All scopes shall be subject to the following application scope, and all patents in this creation shall apply.
=變化之實施例，皆應包含於本創作之㈣中，任; =、二该項技藝者在本創作之領域内，可輕易思及之變化 或i飾皆可涵蓋在以下本案之專利範圍。 圖式簡單說明 =圖係-種傳統之磨耗型人工椎間盤之立體分解圖。 =一圖係另—種傳統之磨耗型人工椎間盤之立體分解圖。 =三圖係本創作之人卫椎間盤之立體分解圖。 第四圖係本創作之人工椎間盤之另_角度之立體分解圖。 13 M314034 第五圖係本創作之人工椎間 第六圖係本創作之人 圖 盤之立體組合圖 工 椎間盤沿第五圖中 6 — 6剖線之剖視 第七圖係本創作之人工掩 椎間盤沿第五圖中7 —7剖線之剖視 圖。 第八圖係本創作之人 人椎間盤安裝於兩節脊椎骨之間之示 意圖。 【主要元件符號說明】 〔先前技術〕 上盤 . 凹槽 下盤 嵌槽 核體 # 凸起部 上盤 凹槽 . 下盤 凹槽 核體 凸起部 〔本創作〕 10 2 12 2 2 0 2 0 0 1 1 齒狀物 丄丄 10 ]9 齒狀物 丄乙 2 0 平面 2 0 0 0 齒狀物 2 1 t .. 10 Ο 〇 齒狀物 2 0 14 M314034 上蓋 3 組裝孔 3 0 第一空間 30 第一弧面 30 下蓋 3 組裝孔 3 1 第二空間 31 第二弧面 31 組合件 3 第三弧面 32 第一軸件 32 第三擋止面3 2 卡合齒 302 第一擋止面 306 第一導槽 309 卡合齒 312 第二擔止面 316 第二導槽 319 第四弧面 322 第二軸件 326 第四檔止面 329 15The embodiment of the change shall be included in (4) of this creation, and shall be included in the scope of this creation, and may be easily considered in the field of this creation or may be covered in the following patent scope of the case. . Brief description of the figure = diagram - a three-dimensional exploded view of a traditional wear-type artificial intervertebral disc. = One figure is another three-dimensional exploded view of the traditional wear-type artificial intervertebral disc. = Three pictures are the three-dimensional exploded view of the person's disc. The fourth picture is a three-dimensional exploded view of the artificial intervertebral disc of the present creation. 13 M314034 The fifth picture is the sixth picture of the artificial intervertebral body of this creation. The three-dimensional combination of the human figure of the creation of the intervertebral disc is shown along the line of 6-6 in the fifth figure. The seventh picture is the artificial cover of the creation. A cross-sectional view of the intervertebral disc taken along line 7-7 of the fifth figure. The eighth figure is the intention of the human intervertebral disc to be installed between the two vertebrae. [Major component symbol description] [Prior Art] Upper plate. Groove lower plate grooved core body #上上上盘槽. Lower disk groove core body protrusion [This creation] 10 2 12 2 2 0 2 0 0 1 1 Tooth 丄丄 10 ]9 Tooth 丄 B 2 0 Plane 2 0 0 0 Tooth 2 1 t .. 10 〇 Tooth 2 0 14 M314034 Upper cover 3 Assembly hole 3 0 First Space 30 First curved surface 30 Lower cover 3 Assembly hole 3 1 Second space 31 Second curved surface 31 Assembly 3 Third curved surface 32 First shaft member 32 Third stop surface 3 2 Engagement tooth 302 First gear Stop surface 306 first guiding groove 309 engaging tooth 312 second supporting surface 316 second guiding groove 319 fourth curved surface 322 second shaft member 326 fourth stop surface 329 15