TW202118468A - 椎骨重建植入物 - Google Patents

椎骨重建植入物 Download PDF

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Publication number
TW202118468A
TW202118468A TW108140647A TW108140647A TW202118468A TW 202118468 A TW202118468 A TW 202118468A TW 108140647 A TW108140647 A TW 108140647A TW 108140647 A TW108140647 A TW 108140647A TW 202118468 A TW202118468 A TW 202118468A
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Taiwan
Prior art keywords
flexible
main body
reconstruction implant
screw
vertebral
Prior art date
Application number
TW108140647A
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English (en)
Other versions
TWI768260B (zh
Inventor
張方杰
蔡佩宜
林得耀
陳安利
曾峰毅
黃志傑
沈欣欣
Original Assignee
財團法人工業技術研究院
國立臺灣大學醫學院附設醫院
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Application filed by 財團法人工業技術研究院, 國立臺灣大學醫學院附設醫院 filed Critical 財團法人工業技術研究院
Priority to TW108140647A priority Critical patent/TWI768260B/zh
Priority to US16/730,000 priority patent/US11351037B2/en
Priority to CN202010000574.4A priority patent/CN112773484B/zh
Publication of TW202118468A publication Critical patent/TW202118468A/zh
Application granted granted Critical
Publication of TWI768260B publication Critical patent/TWI768260B/zh

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Abstract

本發明涉及一種椎骨重建植入物，包含一可撓性主體以及至少一螺釘接頭。可撓性主體為一體成型之單體結構具有彼此相連通的至少一接頭組裝槽以及至少一開口。螺釘接頭為一體成型之單體結構且可活動地容置於接頭組裝槽中。

Description

椎骨重建植入物
本發明係關於一種植入物，特別是一種椎骨重建植入物。
脊椎骨缺陷、損傷可能由先天性缺陷、腫瘤或其他疾病、衰老或創傷所引起。通常的治療手段是對受損或具有腫瘤的椎骨(vertebra)切除並進行重建手術。手術過程中，醫師會使用椎根螺釘(pedicle screw)和脊椎固定桿(spine fixation rod)將脊柱對齊並將受損的椎骨切除，再將植入物置入移除椎骨後的空間以對其進行重建。
但目前市售用於重建椎骨的植入物存在許多問題。舉例來說，現有的椎骨重建植入物通常具有較高的剛性及不足的可撓性，但椎骨的質地相對較軟，因此術後常常出現植入物壓迫甚至使鄰接椎骨凹陷、損傷等問題，陷入椎骨的植入物不僅無法再維持椎骨於所需的高度，受損的椎骨還會產生病變或退化等後遺症。
這個情況在人體進行活動時更為嚴重，人體於日常活動時會增加椎骨之間的壓力，剛性過高且缺乏可撓性的植入物會容易與椎骨之間產生應力集中的現象，從而促使植入物破壞椎骨的情況。並且，由於可撓性不足，因此現有的植入物常常無法配合人體活動時椎骨所需要的移動而容易發生植入物從椎骨間滑脫的問題，從而導致融合失敗的結果。
此外，基於一些原因，目前有些植入物的外形設計為簡單的圓筒狀，置入椎骨間後容易使應力集中在椎骨中心處質地更為脆弱的部位，從而更加劇前述植入物破壞椎骨並陷入椎骨等問題。
有鑑於此，本發明提供一種椎骨重建植入物，具有足夠的可撓性以降低其與鄰接椎骨的應力集中問題以及配合人體日常活動時鄰接椎骨所需的移動。
根據本發明之一實施例所揭露的一種椎骨重建植入物，包含一可撓性主體以及至少一螺釘接頭。可撓性主體為一體成型之單體結構具有彼此相連通的至少一接頭組裝槽以及至少一開口。螺釘接頭為一體成型之單體結構且可活動地容置於接頭組裝槽中。
根據本發明前述實施例所揭露的椎骨重建植入物，藉由一體成型之可撓性主體，使得椎骨重建植入物具有足以維持椎骨相對位置的剛性的同時，還具有可配合人體活動的可撓性與可壓縮性，以減低或緩衝人體活動時來自椎骨的壓力，不僅可避免從椎骨間滑脫的問題，還可避免與鄰接之椎骨之間產生應力集中而破壞椎骨的問題。藉此，可避免椎骨重建手術後如椎骨受損病變或退化、植入物滑脫或融合失敗等問題的發生。
並且，藉由一體成型且可活動地位於可撓性主體中的螺釘接頭，便於醫師於手術過程中調整椎根螺釘的角度，從而助於手術的進行。
以上之關於本發明揭露內容之說明及以下之實施方式之說明，係用以示範與解釋本發明之精神與原理，並且提供本發明之專利申請範圍更進一步之解釋。
以下在實施方式中詳細敘述本發明之詳細特徵以及優點，其內容足以使任何熟習相關技藝者，瞭解本發明之技術內容並據以實施，且根據本說明書所揭露之內容、申請專利範圍及圖式，任何熟習相關技藝者可輕易地理解本發明相關之目的及優點。以下之實施例係進一步詳細說明本發明之觀點，但非以任何觀點限制本發明之範疇。
此外，以下將以圖式揭露本發明之實施例，為明確說明起見，許多實務上的細節將在以下敘述中一併說明。然而，應瞭解到的是，這些實務上的細節非用以限制本發明。
並且，為達圖面整潔之目的，一些習知慣用的結構與元件在圖式可能會以簡單示意的方式繪示之。另外，本案之圖式中部份的特徵可能會略為放大或改變其比例或尺寸，以達到便於理解與觀看本發明之技術特徵的目的，但這並非用於限定本發明。依照本發明所揭露之內容所製造之產品的實際尺寸與規格應是可依據生產時的需求、產品本身的特性、及搭配本發明如下所揭露之內容據以調整，於此先聲明之。
另外，以下文中可能會使用「端」、「部」、「部分」、「區域」、「處」等術語來描述特定元件與結構或是其上或其之間的特定技術特徵，但這些元件與結構並不受這些術語所限制。在下文中，也可能會使用「及/或(and/or)」之術語，其是指包含了一或多個所列相關元件或結構之其中一者或全部的組合。以下文中也可能使用「實質上」、「基本上」、「約」或「大約」等術語，其與尺寸、濃度、溫度或其他物理或化學性質或特性之範圍結合使用時，為意欲涵蓋可能存在於該等性質或特性之範圍之上限及/或下限中之偏差、或表示容許製造公差或分析過程中所造成的可接受偏離，但仍可達到所預期的效果。
再者，除非另有定義，本文所使用的所有詞彙或術語，包括技術和科學上的詞彙與術語等具有其通常的意涵，其意涵能夠被熟悉此技術領域者所理解。更進一步的說，上述之詞彙或術語的定義，在本說明書中應被解讀為與本發明相關技術領域具有一致的意涵。除非有特別明確的定義，這些詞彙或術語將不被解釋為過於理想化的或正式的意涵。
首先，請參閱圖1，本發明之一實施例提出一種椎骨重建植入物(vertebra reconstruction implant)1a，如圖所示，椎骨重建植入物1a適於植入於移除某一節椎骨(vertebra)91後所產生的空間，即適於置入椎骨91之間，以取代並重建所移除之椎骨91。此外，椎骨重建植入物1a還可搭配椎根螺釘(pedicle screw)81與脊椎固定桿(spine fixation rod)82一同使用，以維持其與相鄰之椎骨91的相對位置關係。
於本實施例與其他實施例中，椎骨重建植入物1a可以但不限於是以3D列印技術所製造，且其材料可以但不限於具有生物相容性及足以支撐椎骨91所需的剛性，如鈦合金、鐵基合金、鈷合金、高分子材料、陶瓷或其複合材料，但本發明並非以此為限。
補充說明的是，為提升椎骨重建植入物1a與人體組織的相融性，椎骨重建植入物1a可於成型時使其具有粗糙表面，但為達圖式簡潔之目的，圖1及以下圖式並無對此進行繪示。同時，搭配椎骨重建植入物1a的結構設計，椎骨重建植入物1a除了可有效與鄰接的椎骨91相融合，椎骨重建植入物1a還具有足夠的剛性以在椎骨91之間提供足夠的支撐力，但又同時具有多方向性地可撓性及可壓縮性，以配合人體運動時椎骨91間產生的相對位置改變，從而避免傳統之植入物容易產生的滑脫或壓損椎骨等問題。
詳細來說，請參閱圖2~4，圖2係為圖1之椎骨重建植入物1a的側視圖，圖3係為圖2之椎骨重建植入物1a的立體分解示意圖，而圖4係為圖2之椎骨重建植入物1a的局部放大示意圖。於本實施例與其他實施例中，椎骨重建植入物1a至少可包含一可撓性主體10a以及二螺釘接頭20。可撓性主體10a大致上為輪廓不規則的柱體，且為一體成型之單體結構，可撓性主體10a具有彼此相對的二椎骨接觸面100，分別用以抵接相鄰的椎骨(如前述圖1之椎骨91)。
於此，補充說明的是，一般來說，椎骨如同其他骨骼組織，具有外圈質地較硬的皮質骨(cortical bone)以及中心處質地較軟且類似海綿的鬆質骨(cancellous bone)，為了配合這樣骨骼組織，於本實施例與其他實施例中，可撓性主體10a於成型時，可依據所欲鄰接的椎骨的實際情況將外形進行客製化，以使其椎骨接觸面100的範圍至少擴及椎骨之皮質骨且具有相似於皮質骨之形狀的外輪廓，除了可使椎骨重建植入物1a與椎骨之間的應力分散較為平均，還可使椎骨接觸面100至少接觸椎骨之皮質骨以避免應力集中在質地較軟的鬆質骨。
此外，可撓性主體10a的結構設計使其整體具有可壓縮性及可撓性，如圖所示，可撓性主體10a上可具有多個溝槽101，這些溝槽101彼此不相連地交錯排列，以使得可撓性主體10a具有多個彼此保持一特定距離(即溝槽101)的可變形部102。於圖式垂直方向來看，可變形部102懸置於另一可變形部102上方，因此，當一程度的外力施加於可變形部102時，可使其產生形變而相對周圍的可變形部102產生微幅的彎曲。
補充說明的是，於一些實施例中，就溝槽101的配置來說，溝槽101在其所處之平面上可佔可撓性主體10a於該平面之周長的約50~99%，每一層可變形部102上方與下方的溝槽101相對於可撓性主體10a之中心線的相位差可為0~180度，但本發明並非以此為限，可撓性主體上之溝槽的長度、配置方式等均可依據實際需求進行設計上的調整。
此外，為了加強可撓性主體10a與椎骨91之間的結合強度以避免滑脫等情況發生，於本實施例或其他實施例中，可撓性主體10a還可具有多個牙狀結構105，這些牙狀結構105突設於椎骨接觸面100，可咬入鄰接之椎骨91中。值得注意的是，如圖3所示，於本實施例與其他實施例中，牙狀結構105是位於椎骨接觸面100較外圍的部位且沿著椎骨接觸面100外輪廓進行配置，由前述可知，牙狀結構105的排列方式可對應椎骨之皮質骨，因此牙狀結構105主要是咬合於椎骨中質地較硬的部分，有助於避免應力集中在質地較軟的鬆質骨以及降低對椎骨可能造成的影響。
然而，牙狀結構105於椎骨接觸面100上的配置方式也可以改為是陣列式或隨機分佈等方式，本發明並非以此為限。此外，牙狀結構105的高度可約為0.5~3毫米，其斜邊相對於椎骨接觸面100的斜率可約為20~70度，但這些數值均可依據實際需求再進行調整，本發明亦以此為限。
另外，於本實施例或其他實施例中，可撓性主體10a上可以但不限於具有多孔結構107，可做為周圍人體組織往椎骨重建植入物1a內部生長的通道，有助於增加人體組織在椎骨重建植入物1a中可增生的空間，從而有助於提升椎骨重建植入物1a與人體組織的相融性。在此情況下，可撓性主體10a中部分或全部的可變形部102可以但不限於都形成有多孔結構107。於本實施例或其他實施例中，多孔結構107的數量可達到佔可撓性主體10a之體積百分比約20~80%的程度。
此外，補充說明的是，本發明並非以多孔結構107之孔洞大小、形狀或孔洞之間的距離等為限，這些均可依據實際需求進行調整。例如多孔結構107的形狀可以但不限於是格子形或如海綿般不規則形。另外，多孔結構107在可撓性主體10a中的疏密程度也可依據實際需求進行設計上的調整，也就是說，可撓性主體10a中有些區域可相較於其他區域具有數量較多的多孔結構107。然而，為達圖式簡潔之目的，圖3以及其他圖式僅於椎骨接觸面100上繪示多孔結構107。
於本實施例與其他實施例中，可撓性主體10a還可供螺釘接頭20設置。具體來說，如圖所示，可撓性主體10a還可具有二接頭組裝槽103，螺釘接頭20分別可活動地容置於可撓性主體10a的接頭組裝槽103中。詳細來說，可撓性主體10a具有二開口102，分別位於可撓性主體10a的相異側，且各該開口102形成於其中二可變形部102之間，接頭組裝槽103位於可撓性主體10a中且分別經由該二開口102連通於外，螺釘接頭20位於接頭組裝槽103中，且僅部分經由開口102暴露於外，但其餘部分受到開口102周圍的可變形部102阻擋而隱藏於可撓性主體10a中。或者說，於本實施例或其他實施例中，螺釘接頭20於垂直方向上的長度至少大於開口102於垂直方向上的長度，其中，這裡或後續所述之垂直方向是指以圖式之視角來看，但本發明並非以此空間性用語為限。
另外，需注意的是，椎骨重建植入物1a可以但不限於是以3D列印技術於同一成型步驟所製成，也就是說，可撓性主體10a以及螺釘接頭20可同時成型並於成型時自組裝完成而構成如圖2所示之椎骨重建植入物1a，或者說，螺釘接頭20於可撓性主體10a成型過程中即同時成型於可撓性主體10a之接頭組裝槽103中，故可撓性主體10a與螺釘接頭20成型後無需再進行組裝程序，且螺釘接頭20即不能經由開口102從接頭組裝槽103中取出。於此，可理解的是，於本實施例與其他實施例中，螺釘接頭20也是一體成型之單體結構。
螺釘接頭20可供前述的椎根螺釘81鎖固組裝，以使椎根螺釘81可活動地設置於可撓性主體10a上。詳細來說，於本實施例與其他實施例中，螺釘接頭20至少包含一顯露部210以及至少二嵌入部220，顯露部210銜接於嵌入部220之間，嵌入部220是為螺釘接頭20上嵌入可撓性主體10a之接頭組裝槽103中且隱藏於可撓性主體10a中的部位，而顯露部210是為螺釘接頭20上位於接頭組裝槽103中但可從開口102暴露於外的部位。
於本實施例中，螺釘接頭20之嵌入部220實質上略呈錐形，相應地，接頭組裝槽103中未直接從開口102暴露於外的部分可為形狀匹配嵌入部220的錐形。藉此配置，螺釘接頭20得以在可撓性主體10a中進行轉動。但本發明並非以螺釘接頭20以及與其匹配之接頭組裝槽103的外形為限，例如於一些其他實施例中，螺釘接頭可改為一球體，相應地，接頭組裝槽用於容置螺釘接頭的部分可改為球形槽，藉此，螺釘接頭得以在可撓性主體中進行更多方向的轉動運動。或者，於另一些其他實施例中，螺釘接頭也可於垂直方向突設有凸點或柱狀結構，以對應樞設於接頭組裝槽中之孔洞，在此配置下，螺釘接頭也可在接頭組裝槽中進行樞轉運動，且在此情況下，可撓性主體之開口於垂直方向上的長度可以實質上等於螺釘接頭於垂直方向上的長度。
於本實施例與其他實施例中，顯露部210是為螺釘接頭20上供椎根螺釘81鎖固組裝的部位，如圖所示，顯露部210具有一鎖孔211，適於供椎根螺釘81鎖入對接。藉此，椎根螺釘81可透過固定於螺釘接頭20的方式可活動地設置於可撓性主體10a。藉此，醫師則可輕易地將椎根螺釘81調整至所需的角度。於一些實施例中，椎骨重建植入物1a可讓椎根螺釘81具有約0~150度的角度調整幅度。另外，補充說明的是，螺釘接頭20在可撓性主體10a上的位置不特別予以限制，應可依據實際患者的需求進行調整。
進一步地，於本實施例與其他實施例中，螺釘接頭20之顯露部210的鎖孔211為一穿孔，可供螺鎖並貫穿顯露部210，並且，可撓性主體10a還具有至少一螺釘抵接內壁面108，位於接頭組裝槽103中且可經由顯露部210之鎖孔211及可撓性主體10a之開口102暴露於外。因此，當醫師將椎根螺釘81鎖於螺釘接頭20並透過螺釘接頭20將椎根螺釘81調整至合適的位置時，醫師可再進一步地將椎根螺釘81貫穿鎖孔211而抵接於螺釘接頭20後方之可撓性主體10a內的螺釘抵接內壁面108，椎根螺釘81與螺釘抵接內壁面108之間的相互抵緊除了可產生摩擦力以防固定椎根螺釘81，還可迫使螺釘接頭20往開口102方向移動而抵緊接頭組裝槽103的內壁面，從而將椎根螺釘81固定於當下的角度，以防止椎根螺釘81相對可撓性主體10a隨意活動。
接著，請參閱圖5，圖5係為圖1之椎骨重建植入物1a受力時的示意圖，需聲明的是，為便於說明以及達到圖式簡潔之目的，圖5中省略繪示椎根螺釘81。椎骨重建植入物1a被植入椎骨91間後，除了具有足夠剛性以提供椎骨91有效地支撐效果而維持椎骨91於合適的高度，但當患者進行日常活動而使椎骨91之相對位置改變時，椎骨重建植入物1a之可變形部102可受到椎骨91的施壓而相應產生形變，除了可緩衝並分散施加於椎骨重建植入物1a上的壓力以避免應力集中於椎骨重建植入物1a與椎骨91接合處，還可配合椎骨91的活動以避免因椎骨91之移動而導致從椎骨91間滑脫的問題。經實際模擬結果，本發明前述實施例之椎骨重建植入物1a至少可具有往前後左右四個不同方向偏擺約0~20度的可撓性，且垂直方向的最大可壓縮量可至約3毫米。
於此需聲明的是，前述僅是本發明中實現可撓性的其中一種實施態樣，本發明並非以此為限。例如請參閱6，圖6係為依據本發明之另一實施例之椎骨重建植入物1b的側視圖。然為達簡潔說明之目的，以下僅針對本實施例與前述實施例之主要差異處進行說明，其餘相似或相同之處可參閱前述說明中得知。
如圖6所示，於本實施例中，椎骨重建植入物1b之可撓性主體10b為一個螺旋狀的單體結構，類似於壓縮彈簧，因此同樣具有多方向的可撓性以及可壓縮性。因此，同樣可達到如前述實施例中避免應力集中及滑脫等效果。但本發明並非以螺旋結構之可撓性主體10b中每層實體結構之間的間距或每層實體結構之厚度等規格設計為限制，這些均可依據實際需求進行設計上的調整。甚至，例如於另一些其他實施例中，可撓性主體也可以改成是僅具有多孔結構107的塊體，惟可撓性主體中的多孔結構107的數量可增加至使其達到所預期的可壓縮性及可撓性的程度。
或者，請參閱圖7A~7B，圖7A係為依據本發明之又一實施例之椎骨重建植入物1c的立體分解示意圖，而圖7B係為圖7A之椎骨重建植入物1c的使用示意圖。需先聲明的是，為達簡潔說明之目的，以下僅針對本實施例與前述實施例之主要差異處進行說明，其餘相似或相同之處可參閱前述說明中得知。
如圖所示，於本實施例中，椎骨重建植入物1c可包含兩個彼此相互獨立的可撓性主體：一第一可撓性主體10c以及一第二可撓性主體11c，第一可撓性主體10c與第二可撓性主體11c的結構可以但不限於相似或相同於前述實施例之可撓性主體，故於此不再贅述。
椎骨重建植入物1c還包含一銜接件30c，第一可撓性主體10c與第二可撓性主體11c分別可樞轉地結合於銜接件30c的相對兩側。具體來說，於本實施例中，銜接件30c可以但不限於包含一銜接桿部310c及一間隔部320c，銜接桿部310c呈一桿狀，間隔部320呈一盤狀，銜接桿部310c穿設間隔部320，第一可撓性主體10c與第二可撓性主體11c分別可樞轉地結合於銜接桿部310c穿出於間隔部320相對兩側的部分。補充說明的是，銜接件30c可以但不限於是一體成型之單體結構。此外，第一可撓性主體10c與第二可撓性主體11c可以但不限於僅是直接套設於銜接桿部310c上。
藉此配置，第一可撓性主體10c與第二可撓性主體11c除了如前述實施例同樣可達到受壓迫時產生形變以緩解應力集中的效果，第一可撓性主體10c與第二可撓性主體11c還可彼此相對進行轉動運動，從而可配合椎骨彼此之間產生較大幅度的旋轉運動，如圖7B中所示可相對第一可撓性主體10c往箭頭方向轉動的第二可撓性主體11c。於此，補充說明的是，在使用上，第一可撓性主體10c與第二可撓性主體11c可能會經常性與銜接件30c產生摩擦，因此為延長椎骨重建植入物1c的耐用度，銜接件30c可以但不限於以耐磨高分子或陶瓷等材料所製成。
又或者，請參閱圖8A係為依據本發明之再一實施例之椎骨重建植入物1d的立體示意圖，而圖8B係為圖8A之椎骨重建植入物1d的使用示意圖。需先聲明的是，為達簡潔說明之目的，以下僅針對本實施例與前述實施例之主要差異處進行說明，其餘相似或相同之處可參閱前述說明中得知。
如圖所示，於本實施例中，椎骨重建植入物1d之銜接件30d的銜接桿部310d為一螺桿，其相對兩端分別螺鎖進入椎骨重建植入物1d之第一可撓性主體10d以及第二可撓性主體11d，而銜接件30d之間隔部320d則為固定於第一可撓性主體10d上且可供銜接桿部310d螺鎖穿設的結構。
藉此配置，第一可撓性主體10d與第二可撓性主體11d除了如前述實施例同樣可達到受壓迫時產生形變以緩解應力集中的效果，第一可撓性主體10d與第二可撓性主體11d還可藉由銜接件30d調整其之間的間距，以進一步配合椎骨需要被調整的高度。如圖8B中所示，第二可撓性主體11d可沿銜接件30d之銜接桿部310d往箭頭方向相對靠近或遠離第一可撓性主體10d。於一些實施例中，第二可撓性主體11d相對第一可撓性主體10d可被調整的最遠距離可使椎骨重建植入物1d具有約20~100毫米的高度變化，或是使椎骨重建植入物約具有其原始高度之10~80%的高度增加量。
由本發明前述實施例之椎骨重建植入物，藉由一體成型之可撓性主體，使得椎骨重建植入物具有足以維持椎骨相對位置的剛性的同時，還具有可配合人體活動的可撓性與可壓縮性，以減低或緩衝人體活動時來自椎骨的壓力，不僅可避免從椎骨間滑脫的問題，還可避免與鄰接之椎骨之間產生應力集中而破壞椎骨的問題。藉此，可避免椎骨重建手術後如椎骨受損病變或退化、植入物滑脫或融合失敗等問題的發生。
並且，藉由一體成型且可活動地位於可撓性主體中的螺釘接頭，便於醫師於手術過程中調整椎根螺釘的角度，從而助於手術的進行。
雖然本發明以前述之實施例揭露如上，然其並非用以限定本發明。在不脫離本發明之精神和範圍內，所為之更動與潤飾，均屬本發明之專利保護範圍。關於本發明所界定之保護範圍請參考所附之申請專利範圍。
1a~1d:椎骨重建植入物 10a~10b:可撓性主體 10c~10d:第一可撓性主體 11c~11d:第二可撓性主體 20:螺釘接頭 30c~30d:銜接件 91:椎骨 81:椎根螺釘 82:脊椎固定桿 100:椎骨接觸面 101:溝槽 102:可變形部 103:接頭組裝槽 104:開口 105:牙狀結構 107:多孔結構 108:螺釘抵接內壁面 210:顯露部 211:鎖孔 220:嵌入部 310c、310d:銜接桿部 320c、320d:間隔部
圖1係為依據本發明之一實施例之椎骨重建植入物的使用情境示意圖。 圖2係為圖1之椎骨重建植入物的側視圖。 圖3係為圖2之椎骨重建植入物的立體分解示意圖。 圖4係為圖2之椎骨重建植入物的局部放大示意圖。 圖5係為圖1之椎骨重建植入物受力時的示意圖。 圖6係為依據本發明之另一實施例之椎骨重建植入物的側視圖。 圖7A係為依據本發明之又一實施例之椎骨重建植入物的立體分解示意圖。 圖7B係為圖7A之椎骨重建植入物的使用示意圖。 圖8A係為依據本發明之再一實施例之椎骨重建植入物的立體示意圖。 圖8B係為圖8A之椎骨重建植入物的使用示意圖。
1a:椎骨重建植入物
81:椎根螺釘
82:脊椎固定桿
91:椎骨

Claims (10)

  1. 一種椎骨重建植入物，包含：一可撓性主體，為一體成型之單體結構，且具有彼此相連通的至少一接頭組裝槽以及至少一開口；以及至少一螺釘接頭，為一體成型之單體結構，該至少一螺釘接頭可活動地容置於該至少一接頭組裝槽中。
  2. 如請求項1所述之椎骨重建植入物，其中該至少一螺釘接頭包含一顯露部以及二嵌入部，該顯露部銜接於該二嵌入部之間，該顯露部具有一鎖孔，且該至少一螺釘接頭中僅該顯露部經由該至少一開口暴露於外。
  3. 如請求項2所述之椎骨重建植入物，其中該可撓性主體具有至少一螺釘抵接內壁面，該至少一螺釘抵接內壁面位於該至少一接頭組裝槽中且經由該顯露部之該鎖孔以及該至少一開口暴露於外。
  4. 如請求項1所述之椎骨重建植入物，其中該可撓性主體與該至少一螺釘接頭為於同一3D成型步驟所製成。
  5. 如請求項1所述之椎骨重建植入物，其中該可撓性主體有複數個溝槽，該些溝槽彼此相對間隔地交錯配置。
  6. 如請求項1所述之椎骨重建植入物，其中該可撓性主體為一體成型之螺旋狀單體結構。
  7. 如請求項1所述之椎骨重建植入物，其中該可撓性主體具有二椎骨接觸面以及多個牙狀結構，該些牙狀結構突設於該些椎骨接觸面，且沿著該椎骨接觸面的外輪廓排列。
  8. 如請求項1所述之椎骨重建植入物，更包含一銜接件以及另一可撓性主體，該可撓性主體與該另一可撓性主體經由該銜接件可樞轉地彼此相連接。
  9. 如請求項8所述之椎骨重建植入物，其中該銜接件包含一銜接桿部以及一間隔部，該可撓性主體可樞轉地設置於該銜接桿部之一端，該另一可撓性主體可樞轉地設置於該銜接桿部之另一端，該銜接桿部穿設該間隔部，該間隔部夾設於該可撓性主體與該另一可撓性主體之間。
  10. 如請求項8所述之椎骨重建植入物，其中該銜接件包含一銜接桿部以及一間隔部，該銜接桿部為一螺桿，該銜接桿部之一端螺鎖於該可撓性主體，該銜接桿部之一端螺鎖於該另一可撓性主體，該銜接桿部穿設該間隔部，該間隔部介於該可撓性主體與該另一可撓性主體之間。
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