TW200422035A - Intervertebral implant - Google Patents
Intervertebral implant Download PDFInfo
- Publication number
- TW200422035A TW200422035A TW093105669A TW93105669A TW200422035A TW 200422035 A TW200422035 A TW 200422035A TW 093105669 A TW093105669 A TW 093105669A TW 93105669 A TW93105669 A TW 93105669A TW 200422035 A TW200422035 A TW 200422035A
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- TW
- Taiwan
- Prior art keywords
- implant
- ring
- item
- patent application
- intervertebral implant
- Prior art date
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Classifications
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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
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- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
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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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- 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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- 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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- 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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- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
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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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- 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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- 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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Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurology (AREA)
- Prostheses (AREA)
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200422035 狄、發明說明: [發明所屬之技術領域] 本發明關於申請專利範圍第丨的引文一種椎間植入物 [先前技術] 物在德專利DE-A196 22 827發表了 一種此類的椎間植入 口。在此,該中植入物部(它設計成具内螺紋的環的形式) <、末端上植入物都用螺紋接合,與末端的下植入物部不 ’遠環可沿軸向自由運動,也可自由旋轉運動,該末端 ,了 =入物部只供環作軸向之止擋,換言之,當作支持面 可裒可相對於此支持面轉動’因此該末端之上植入物部 =軸向運動(螺母/螺桿驅動器),因此,該二末端的植入 互=成鬆鬆地裝設,這點也可由以下情況看出:即, 孔持住,在該二植入物之-中設有螺紋 習知椎間植入二=:設:銷!:::孔中。因此這種 不能固定住以防“ p,匕們在手術前及手術中並 通… 移動。有一可_「夾緊螺絲」 孔因此這種習知椎間植入物有一缺點,即: 付月及手術中不能牢牢保持住 ,在手術室中,插A此 ,互相氣、開掉洛 許多時間延遲。物掉下來,由於消毒…,會造成 椎二::1!利 EP_A 1 219 266 ulricm到-伸縮管式 椎間植入物義器官,呈 ^ 輪的齒牙,該齒牙/故環具有椎形齒 沿杈向經由一螺形小齒輪移動,這種 200422035 裝置的缺點為:該螺紋環盥該 衣,、忑匣邓入之一不是沿軸向牢接 特=況’如此,該植入物的結構較不穩定。此外還需要一 ^工具’以將植入物拔出(Distraktion)。這種習知植入物 缺點在於所用的錐形齒於的 μw輪的齒牙,它很「不聽使唤」 ’因此很不好用。在錐形齒於 々w輪齒牙的情形,該驅動工具只 有一點轴向移動就不能再甘Λ Ab 執仃,、功此,且外科醫師必須 就地將此工具重新調整。 [發明内容] 對此本發明提出對策,本發明的目的在提供一種椎間 =物,它在保持將儘量小的構造高度的情形下構成一種 挺^人t 伯而蹩體且可呈預安裝的套組方式 如供給外科醫師使用。 本發明達成此目的之道择系丨 、係利用具有申請專利範圍第1 項特點的椎間植入物。 本發明其他有利的特多目#由 J狩邑見於申睛專利範圍附屬項。 利用本發明所達到的優 入物^ ㈤優點主要在於·拜本發明椎間植 入物之賜,刼作更簡單,一 ^ 方面美阿该椎間植入物的安全 ',另方面植入所花的時間減少。 在一特別實施例中,續始鬥姑> ^ , ^ T w亥椎間植入物的環利用一夾合連 接手段固定在下植入物部上, 成為轴向固疋但可旋轉運動 的方式。因此該環確實禪杜尤甘 T保持在其硓受驅動的位置,換言之 ’該環不會沿軸向偏離。 、σ 這夾合連接手段官ώ 由衣中一個圈餅形下切部 (Hmterschnitt 英·· unde t)及爷 )及°亥下植入物部的函殼的自由 200422035 端上的-個與該下切部相關的環形加厚部構成。如此可使 該環轉動方式係使轉運動繞著與該二個g形植入物部相同 的中心作轉動。 在另貫細例中,該環有一下圓環面及一上圓環面, 下圓環面朝向下植入物部,上圓環面朝向上植入物部,其 中該下圓環面有-直齒輪(Zahnkranz),它適用於容納一個 與之相關的小齒輪。此實施例利用該帶有小齒輪的工旦的 ,向轉動造成該環的軸向轉動。與習用的植入物(它們的 環須沿切向運動)相較有一優點,即,該「旋轉工具」所 需的空間較少’且速度較快’因為經常可以不須旋轉工具 轉一角度後抽出再放入該環的新的孔中。 在另-實施例中,該下植入物部的函殼有一徑向的凹 陷部’且宜為貫通該函殼的凹陷部,它適用於與一小齒輪 相對於直齒輪定位並支持住。如此,可以报有利地在該脊 椎拉開(Distraktion)之後,將骨屑經該貫通的凹陷部放入該 下植入物部的空腔中。 在又一實靶例中,該上植入物部的圓筒形幹軸(6)有一 條導引槽孔’平行於旋轉軸延伸,用於防止上植入物部相 對於下植人物部轉動。而該下植人物部的函殼的内側有一 導引元件⑼’向内突伸’傲入導引槽孔中’該導引元件 宜可經函殼中的-徑向貫穿孔放入。如此可防止該二個植 入物部反向轉動。否則這種反向轉動令對植入物對端板的 接觸以及脊柱前彎(lG]*dQsieren)的肖度有不利影響。 在再-貫施例中’該上植入物部(5)的圓筒形幹轴⑹的 200422035 因此該二個構件 周圍比下植入物(2)的空心圓筒形空腔大 互不接觸。 在另外一實施例中, 呀、级興該環的 •可藉摩擦阻 ’該圓筒形幹軸的外螺紋與該
止動手段。 内螺紋設計成可自身停定(selbsthemmen)(即·· 力安定地倚在任何所Μ私丨从A sa t _ _____ 1 ·〇mm範圍,且〕 例如在2mm範圍 的調整會不夠細, 在又一實施例中,外螺紋與内螺紋的螺距在〇.5 且宜在0.6〜〇.8mm 範圍。如果螺距更大, 則會有在手術中的缺點,因為拉開作用 而當螺距比該範圍更小時,要轉動要^ 較長的時間。 在再一實施例中,該外螺紋以及内螺紋設計成右旋螺 "文士 如此有一優點,即:該帶有小齒輪的工具可用_般 方式一如普通的螺絲起子用右手旋轉,以將植入物拉開。又 在另一個實施例中,該外螺紋與内螺紋設計成螺線式 螺紋’且宜為雙螺線式螺紋。在雙螺線式螺紋,該環轉一 圈時,其行程前進二個螺距。如此植入物的操作可較快且 較簡單’這點使手術時間縮短並使病人舒緩。 在又一個實施例中,該二個並列部設計成垂直於旋轉 軸的板形元件形式,具有一並列面,用於倚靠到鄰界的脊 椎蓋面上。 在再一個實施例中,該並列面設置成不對旋轉軸成直 200422035 角’而係與旋轉轴央成一角度 更適當地配合解剖學上的特性 。〜14 °的角度。如此可確實 度0 ,宜為83。〜85° ,如此可 ,該二並列面宜上下夾成1〇 達到解剖學上脊柱前彎的角 在另一實施例中,該二並列面至少有一個(且宜為上 植入物部的並列面)向外拱起。如此可適當地配合椎體, 該下植入物的並列面宜設計成大致平坦。 在又一實施例中該直齒輪具有直齒彳,和雜形齒輪/ 斜齒輪相較,該直齒牙係可軸向移動仍保嚙合。 本發明與本發明的進-步特色在以下利用數個實施例 的部分示意圖詳細說明。 [實施方式] 第1圖〜第6圖所示的椎間植人物⑴主要由_個下植 入物部⑺、一個上植入物部(5)、與一個設在該二植入物部 (2)(5)之間的環⑼構成。下植人物部⑺有—空心圓筒形空 腔(3)。該空腔(3)具有一函殼(14)、一旋轉軸(11)、及一個 用於倚靠到鄰界之下脊椎的蓋面上的並列部⑷、上植入物 (5)有-大致圓筒形的幹軸⑹,該幹轴⑹具有外螺紋⑺與 旋轉轴(1 1)及一個用於倚告到鄰界上脊椎的蓋面上的並列 部(8),該幹軸(6)延伸到下植入物部⑺的空腔⑺中。該二 植入物部被保持住以防繞其旋轉軸(11)轉動。 %(9)有一内螺紋(1〇),它與上植入物(5)的外螺紋(7)配 合’其中該二植入物部⑺(5)與環⑺沿其同旋轉軸⑴)設成 共軸’因此藉著將環(9)在幹轴⑹的外螺紋⑺上轉動,將 200422035 該二並列部(4)(8)之間的距離作無段式調整,環(9)利用一 夾合連接手段與下植入物部(2)連接成沿軸向固定但可旋轉 的方式。 如第3圖所示,該夾合連接手段由環(9)中的一個圈餅 形下切邛(21)(Hinterschnitt,英:underCut)與下植入物部 (2)函殼(14)的自由端上的一個與下切部(21)對應的環形加 厚部(22)構成。 乂 環(9)有一個下圓環面(12)及一上圓環面(13),下圓環 面(12)朝向植入物部(2),上圓環面〇3)朝向上植入物部, 其中該下圓環面(12)具有一個具直齒牙上齒輪(23),它適合 容納一個與之相關的小齒輪。 下植入物(2)的函殼(14)有一徑向貫通的凹陷部(15), 它適用於將一小齒輪(圖中未示)相對於該正齒輪定位及支 持住。 為了防止上植入物部(5)相對於下植入物部(2)轉動,故 上植入物部(5)的圓筒形幹軸(6)有一條平行於旋轉軸(ιι)延 伸的導引槽孔(16),而下植入物(21)的齒殼(14)的内側上有 一導引件(17)(第2圖),它向内突起,嵌入該導引槽(16) 中,且可經過函殼(14)中的一徑向貫穿孔(18)放入。 圓筒形幹軸(6)的外螺紋(7)與環(9)的内螺紋(1〇)設計成 可自身停定的方式。外螺紋(7)與内螺紋(1〇)的螺距為 0.7mm。该外螺紋與内螺紋(1〇)都設計成雙螺線右旋型 螺紋形式。 如第3圖所示’該二並列面(4)(8)設計成垂直於旋轉軸 200422035 (11)的板形元件形式’它們具有一個用於倚靠到該鄰界的 脊椎的蓋面上的並列面(19)(20),其中該並列面(19)(2〇)並 非設成與旋轉軸(11)成直角,而係與旋轉軸(u)夾成85。 的角度。因此該二並列面(19)(20)上下夾成一個1〇。的角 度。如第3圖所示,上並列面(20)向外拱起,而下植入物 部的並列面(19)設計成大致平坦。 椎間植入物可用習用之植入物材料製造,最好使用可 透過X光的PEEK,俾能利用X光評估配合融合(Fusi〇n) 情形。 此椎間植入物特別適用於做脊椎的頸椎及較上方胸椎 區域的椎體可取代物。 【圖式簡單說明】 (一)圖式部分 第1圖係該椎間植入物在組合狀態的立體圖; 苐2圖係該椎間植入物的立體分解圖; 第3圖係該第1圖的椎間植入物經旋轉轴的縱剖面圖 第4圖係第1圖之椎間植入物的前視圖; 第5圖係在分解狀態經第1圖的椎間植入物的旋轉轴 的縱剖面圖; 第6圖係在分解狀第1回的椎間植入物的前視圖。 (一)元件代表符號 (1) 椎間植入物 (2) 下植入物部 12 200422035 (3) 圓筒形室腔 (4) 並列部 (5) 上植入物部 (6) 幹軸 ⑺ 外螺紋 (8) 並列部 (9) 環 (10) 内螺紋 (11) 旋轉軸 (12) 下圓環面 (13) 上圓環面 (14) 函殼 (15) 凹陷部 (16) 導引槽孔 (17) 導引元件 (18) 徑向貫穿孔 (19) 並列面 (20) 並列面 (21) 下切部 (22) 加厚部 (23) 直齒牙上齒輪(正齒輪) 13
Claims (1)
- 200422035 拾、申請專利範圍: 1·一種椎間植入物(1),包含: A) —個下植入物部(2),它具有一個函殼(14)及一旋轉 轴(11),以及一用於倚靠到鄰界的下方脊椎的蓋面上的並 列部(4); B) —個上植入物(5),具有一條具外螺紋的圓柱形幹轴 (6)及$疋轉軸(11)’该幹軸延伸到下植入物(2)的空腔(3)中, 以及一個用於倚靠到相鄰界的上方脊椎的蓋面上的並列部 (8);其中 C) 該二植入物(2)(5)被保持住以防止繞其旋轉轴(11)轉 動; D) —個設在該二植入物部(2)(5)之間之具有内螺紋(1〇) 的環(9),該内螺紋(9)與上植入物部(5)的外螺紋配合;其 中 E) 該二植入物部(2)(5)與該環(9)呈共軸方式沿其同旋 轉軸(11)設置,因此 F) 可藉著將環(9)在幹軸(6)外螺紋(?)上移動,將該二 並列部(4)(8)之間的距離作無段式改變; G) 該環(9)與下植入物部(2)連接成沿軸向固定但可作 旋轉運動的方式。 2·如申請專利範圍第1項之椎間植入物,其中: 該環(9)利用下植入物部(2)上的一类人 、 、灭合連接手段固定成 沿車由向固定位可轉動的方式: 3·如申請專利範圍第2項之椎間植入物,其中: 該^連接手段由環(9)中的—圈餅形的下切部⑼及 下植入部(2)的函殼(14)的自由嫂 的環形變厚部⑽形成。的一個與該下切部對應 :4.如中請專利範圍第1或第2項之椎間植入物,其中 該環⑼有一個朝向下植入物部⑺的下圓環面⑽及一 朝向上植入物部的上圓環面 一正齒卜m、,—( 3) ”以下_面(12)有 两 匕、用於容納一個與它對應的小齒幹。 ^如申請專利範圍第4項之椎間植人物,其中;9 —〆下植入物(2)的函殼(14)有-徑向凹陷部(15),且宜 貝牙該函殼,該凹P名、益 (23)定位及支隸。^ ϋ㈣相料該正齒輪 :6·如申請專利範圍第i或第2項之椎間植入物,其中 該上植人物部_圓筒形幹軸⑹有—條平行於 1:Γ導ΓΛ槽子(16),該下植入—^ W(17),向内凸出,嵌入該導引槽孔( 且宜可經函殼(4)中的—徑向貫穿孔(18)放入,以防止上植 入物部(5)相對於下植入物部(2)轉動。 .7.如申請專利範圍第1或第2項之椎間植入物,其中 部ml"!植=物部(5)的圓筒形幹轴(6)的周圍小於下植入物 "、工心®筒形空腔(3),使該:個構件互不接觸。 8.如申請專利範圍第1或第2項之椎間植入物,其中 15 200422035 、 圓筒形幹軸(6)的外螺紋(7)與環(9)的内螺紋(ίο)設計 成可在任何位置自身停定的方式。 9·如申睛專利範圍第5項之椎間植入物,其中·· 忒外螺紋(7)與内螺紋(1〇)的螺距在〇5〜1〇〇mm範圍 。且宜在〇·6〜〇.8mm範圍。 .1〇.如申請專利範圍帛1或第2項之椎間植入物,其中 該外螺紋(7)與内螺紋(1〇)都設計成右旋型螺紋形式。 U.如申請專利範圍第1或第2項之椎間植入物,其中 該外螺紋⑺與内螺紋⑽設計成多螺線式,且宜為雙 螺線式螺紋。 12. 如申請專利範圍第!或第2項之椎間植入物,其中 該二個並列部(4)(8)設計成與旋轉軸⑴)垂直的板形元 件形式,它們具有用於倚靠到鄰界的脊椎的蓋面上的並列 面(19)(20) 〇 13. 如申請專利範圍第12項之椎間植入物,其中: 該並列面(19)(20)設成不和旋轉軸(11)成直角,而係與 旋轉軸(11)夾成83°〜85°的角度。 ” 14·如申請專利範圍第13項之椎間植入物,其中: 該二並列面(19)(20)上下夾成10。〜14。的角度。 15·如申請專利範圍第12項之椎間植入物,其中: 200422035 該二並列面(19)(20)至少有一個〔且宜為上植入物部 (5 )的並列面〕係向外拱起。 16.如申請專利範圍第12項之椎間植入物,其中: 該下植入物部的並列面(19)設計成大致平坦。 17 ·如申請專利範圍第4項之椎間植入物,其中·· 該正齒輪(23)具直齒牙。 拾壹、圖式: 如次頁17
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BR (1) | BR0318221B1 (zh) |
CA (1) | CA2524066C (zh) |
DE (1) | DE50309438D1 (zh) |
ES (1) | ES2300566T3 (zh) |
NZ (1) | NZ543180A (zh) |
TW (1) | TWI333416B (zh) |
WO (1) | WO2004096103A1 (zh) |
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DE19509317B4 (de) * | 1995-03-15 | 2006-08-10 | Heinrich Ulrich | Implantat zum Einsetzen zwischen Wirbelkörper der Wirbelsäule als Platzhalter |
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DE202004021288U1 (de) * | 2003-05-14 | 2007-06-06 | Kraus, Kilian | Höhenverstellbares Implantat zum Einsetzen zwischen Wirbelkörpern und Handhabungswerkzeug |
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2003
- 2003-04-28 DE DE50309438T patent/DE50309438D1/de not_active Expired - Lifetime
- 2003-04-28 AT AT03714601T patent/ATE389374T1/de not_active IP Right Cessation
- 2003-04-28 WO PCT/CH2003/000273 patent/WO2004096103A1/de active IP Right Grant
- 2003-04-28 BR BRPI0318221-5A patent/BR0318221B1/pt not_active IP Right Cessation
- 2003-04-28 ES ES03714601T patent/ES2300566T3/es not_active Expired - Lifetime
- 2003-04-28 JP JP2004571213A patent/JP4245566B2/ja not_active Expired - Lifetime
- 2003-04-28 CN CN03826347A patent/CN100581506C/zh not_active Expired - Fee Related
- 2003-04-28 NZ NZ543180A patent/NZ543180A/en not_active IP Right Cessation
- 2003-04-28 KR KR1020057020378A patent/KR101129769B1/ko not_active IP Right Cessation
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JP2006524513A (ja) | 2006-11-02 |
ES2300566T3 (es) | 2008-06-16 |
WO2004096103A1 (de) | 2004-11-11 |
AR044093A1 (es) | 2005-08-24 |
US20060100710A1 (en) | 2006-05-11 |
DE50309438D1 (de) | 2008-04-30 |
CN1774219A (zh) | 2006-05-17 |
CA2524066C (en) | 2011-03-15 |
BR0318221A (pt) | 2006-04-04 |
EP1620044B1 (de) | 2008-03-19 |
US7641693B2 (en) | 2010-01-05 |
ATE389374T1 (de) | 2008-04-15 |
JP4245566B2 (ja) | 2009-03-25 |
CA2524066A1 (en) | 2004-11-11 |
TWI333416B (en) | 2010-11-21 |
KR101129769B1 (ko) | 2012-03-23 |
EP1620044A1 (de) | 2006-02-01 |
AU2003218855A1 (en) | 2004-11-23 |
KR20060004965A (ko) | 2006-01-16 |
BR0318221B1 (pt) | 2013-01-22 |
NZ543180A (en) | 2009-10-30 |
CN100581506C (zh) | 2010-01-20 |
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