TW202120031A - 三角連桿式椎骨撐開裝置 - Google Patents

三角連桿式椎骨撐開裝置 Download PDF

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TW202120031A
TW202120031A TW108141587A TW108141587A TW202120031A TW 202120031 A TW202120031 A TW 202120031A TW 108141587 A TW108141587 A TW 108141587A TW 108141587 A TW108141587 A TW 108141587A TW 202120031 A TW202120031 A TW 202120031A
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connecting rod
shaft
expansion device
item
patent application
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TW108141587A
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陳立生
趙哲揚
高立寰
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柏力科技股份有限公司
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Priority to TW108141587A priority Critical patent/TW202120031A/zh
Priority to KR1020200150025A priority patent/KR20210060328A/ko
Priority to US17/096,707 priority patent/US20210145601A1/en
Priority to JP2020189278A priority patent/JP2021079100A/ja
Priority to EP20207458.9A priority patent/EP3824833A1/en
Publication of TW202120031A publication Critical patent/TW202120031A/zh

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Abstract

本發明提出一種三角連桿式椎骨撐開裝置，包含：一軸心；一固定部，其中該軸心穿過該固定部、並可相對於該固定部而轉動；一移動塊，套連在該軸心上，並可因應軸心的轉動而在軸心的軸向上移動；至少一第一連接桿，與固定部彼此以可相對轉動的方式連接；至少一第二連接桿，與移動塊彼此以可相對轉動的方式連接，且與對應的第一連接桿彼此以可相對轉動的方式連接；藉此，當軸心在固定部內轉動，導致移動塊遠離固定部時，第一連接桿與第二連接桿被撐開，以撐開脊椎骨。

Description

三角連桿式椎骨撐開裝置
本發明有關於一種三角連桿式椎骨撐開裝置，特別是指一種能夠在植入人體後，藉由三角連桿向上、下兩方向擴張，以撐開椎骨達到復位治療效果的椎骨撐開裝置。
當人體脊椎骨（例如頸椎、胸椎、腰椎、）受到壓迫性骨折（Compression fracture）、或是因骨質密度不佳而塌陷時，需要使用椎骨撐開裝置，植入人體椎骨中，將脊椎椎體往上、下兩方向撐開，以達到復位治療的效果。有關椎骨撐開裝置的先前技術，例如可參閱US 7,846,206 B2，US 9,414,933B2，以及TW I589266。
本發明採用與前述先前技術不同的三角連桿式機械結構，可省略先前技術中的零件，並有較佳之抵抗變形效果。
就其中一觀點言，本發明提供了一種三角連桿式椎骨撐開裝置，包含：一軸心；一固定部，其中該軸心穿過該固定部、並可相對於該固定部而轉動；一移動塊，套連在該軸心上，並可因應軸心的轉動而在軸心的軸向上移動；至少一第一連接桿，與固定部彼此以可相對轉動的方式連接；至少一第二連接桿，與移動塊彼此以可相對轉動的方式連接，且與對應的第一連接桿彼此以可相對轉動的方式連接；藉此，當軸心在固定部內轉動，導致移動塊遠離固定部時，第一連接桿與第二連接桿被撐開，以撐開脊椎骨。
在一種較佳的實施型態中，該第一連接桿較該第二連接桿為長。
在一種較佳的實施型態中，該軸心的外圍及該移動塊的內緣設有螺紋。
在一種較佳的實施型態中，該軸心的外圍包含一凸緣，可供抵接該固定部。
在一種較佳的實施型態中，三角連桿式椎骨撐開裝置，更包含至少一螺帽，栓於該軸心的至少一端。
在一種較佳的實施型態中，該軸心的內部為中空，且設有注入與流出開口。
在一種較佳的實施型態中，該軸心的內部為中空，且設有徑向流出開口。
在一種較佳的實施型態中，該軸心的一端為操作端，可使用對應的工具來轉動。
在一種較佳的實施型態中，該操作端為六角形。
底下藉由具體實施例詳加說明，當更容易瞭解本發明之目的、技術內容、特點及其所達成之功效。
本發明中的圖式屬於示意，主要意在表示各結構部分的作用與其間的相互關係，至於形狀、厚度與寬度則在實施時可以調整改變。
請參考第1-3圖，其顯示本發明之三角連桿式椎骨撐開裝置100的一個實施例。第1圖顯示本發明裝置的收合狀態、第2圖本發明裝置的撐開狀態、第3圖顯示本發明裝置的爆炸圖(包含裝置組裝狀態與零件分解狀態)。
本發明之三角連桿式椎骨撐開裝置100包含軸心101、固定部103、移動塊104、第一連接桿105、第二連接桿 106。軸心101穿過固定部103、並可相對於固定部103而轉動；移動塊104套連在軸心101上，並可因應軸心101的轉動而在軸心101的軸向上移動；第一連接桿105與固定部103彼此以可相對轉動的方式連接(在本實施例中，例如透過容許相對轉動之連接部107A來連接)；第一連接桿105與第二連接桿106彼此以可相對轉動的方式連接(在本實施例中，例如透過容許相對轉動之連接部107C來連接)；第二連接桿 106與移動塊104彼此以可相對轉動的方式連接(在本實施例中，例如透過容許相對轉動之連接部107B來連接)。各連接部107A、107B、107C可以各自為單獨的零件，或是與固定部、第一連接桿105、第二連接桿106、移動塊104之一，一體成型合併構成一個零件。詳言之，連接部107A可以與固定部103一體成型、或是與第一連接桿105一體成型，連接部107B可以與移動塊104一體成型、或是與第二連接桿 106一體成型，連接部107C可以與第一連接桿105一體成型、或是與第二連接桿 106一體成型。
在一較佳實施例中，軸心101的兩端均可再栓上螺帽109，以防止固定部103與軸心101完全脫離、及/或防止移動塊104與軸心101完全脫離。但如並無脫離的顧慮，則螺帽109並非必須而可以省略。此外，如有脫離的顧慮，螺帽也並非唯一防止脫離的方式，也可以採用其他方式來阻擋或限制移動塊104的活動範圍。在一較佳實施例中，請參閱第3圖，軸心101包含凸緣102，以便利抵接固定部103，這樣可藉左端的螺帽109使固定部103靠緊凸緣102來定位。在一較佳實施例中，固定部103的內部和軸心101的對應外周為平滑無螺紋，以便利軸心101相對於固定部103而轉動。
請參閱第1圖對照第2圖，第1圖顯示本發明裝置的收合狀態、第2圖本發明裝置的撐開狀態。三角連桿式椎骨撐開裝置100的右端為前端、左端為後端；當施行手術(例如微創手術)將三角連桿式椎骨撐開裝置100植入人體內時，是先將三角連桿式椎骨撐開裝置100的右端放入。
軸心101的左端(後端)為操作端101A，施行手術者可以使用對應的器械來轉動操作端101A ，使得軸心101相對於固定部103而轉動。(在圖示實施例中，操作端101A可使用六角形的工具來轉動；但本發明不限於此，操作端101A可設計為任何可控轉動的型式，而施行手術者使用對應的器械來轉動)。
當軸心101相對於固定部103而轉動時，固定部103和移動塊104的距離便發生改變。當軸心101在固定部103內轉動，導致移動塊104遠離固定部103時，第一連接桿105與第二連接桿 106便被往上下方撐開，在上下方分別形成三角形，達成撐開脊椎骨使其復位的效果。在一較佳實施例中，為使移動塊104可因應軸心101的轉動而在軸心101的軸向上移動、且於到達定位後可以固定而不會任意改變位置，軸心101的外圍及移動塊104的內緣宜設置螺紋。此外，在一較佳實施例中，如圖所示，第一連接桿105較長而第二連接桿 106較短。這樣，在收合狀態時，第一連接桿105與第二連接桿 106可以緊貼軸心101，便於在手術初期以較小的尺寸來植入人體。若第一連接桿105較短而第二連接桿 106較長、或是兩者等長，則整體裝置所占體積就會較大，較不利於施行手術。
當第一連接桿105與第二連接桿 106被撐開時，第一連接桿105與第二連接桿 106彼此會相對轉動，而第一連接桿105與第二連接桿 106也會分別相對於固定部及相對於移動塊104而轉動。因此，如前所述，這些零件彼此間需要以可相對轉動的方式來彼此連接。達成可相對轉動的連接方式有許多種，本發明並不限於其中任何一種。舉例而言，使用第3圖上方所示的圓形連結軸加上栓帽，就是其中一種可採的方式。此外，請參閱第4圖，顯示根據本發明另一實施例之三角連桿式椎骨撐開裝置200的撐開狀態，以及第5圖，顯示第4圖實施例中之第一連接桿105與第二連接桿106。在本實施例中，舉例顯示第一連接桿105與第二連接桿106的另一種連接方式，在此方式中，連接部107C與第一連接桿105一體成型，而第二連接桿106上設置對應的凹口(參閱虛線方塊所標示處)，這樣，第一連接桿105與第二連接桿 106同樣可以相對轉動。當然，若使連接部107C與第二連接桿106一體成型，而第一連接桿105上設置對應的凹口，也是可行的。以上舉例顯示：達成可相對轉動的連接方式有許多種，皆應屬於本發明的範圍。
在一較佳實施例中，軸心101為中空，且設有注入與流出開口，以便利在植入人體之後，還可以從注入開口經由軸心101的中空部分注入填充物，例如骨水泥(bone cement) 或是補骨材料（bone graft）等，而由流出開口流出。請參閱第3圖，填充物除了從軸心101的後端(左端)注入開口穿過軸心101的內部，由軸心101的右端(流出開口)注入人體之外，在一較佳實施例中，軸心101還可以在徑向上設置流出開口(第3、4圖中舉例顯示開口101B)，以增加填充物的釋放管道。開口101B的數目與尺寸形狀，圖示僅是舉例，本發明並不限於此。
請再參閱第6、7圖，分別顯示根據本發明另一實施例之三角連桿式椎骨撐開裝置的撐開狀態與收合狀態。本實施例顯示：第一連接桿105與第二連接桿106可以僅設置於軸心101的單側，而不必須對稱設置於雙側。第6、7圖顯示僅在單側設置第一連接桿105與第二連接桿106，第1-5圖顯示在雙側對稱設置第一連接桿105與第二連接桿106，依此類推，當然，在本發明的精神下，例如也可以設置三組或更多組第一連接桿105與第二連接桿106，以對稱或不對稱於軸心101的方式設置。
以上已針對較佳實施例來說明本發明，唯以上所述者，僅係為使熟悉本技術者易於了解本發明的內容而已，並非用來限定本發明之權利範圍。在本發明之相同精神下，熟悉本技術者可以思及各種等效變化。例如，在不影響主要功能的前提下，可加入其他零件、或是將實施例中描述為分開獨立的至少一零件，合成為一體的單一零件；舉例而言，第3圖上方的第二連接桿 106可以合為單一零件，下方的第二連接桿 106也可以合為單一零件。又例如，圖中顯示的第一連接桿105與第二連接桿 106的數目和形狀，也都可以改變。又例如，凡此種種，皆可根據本發明的教示類推而得。因此，本發明的範圍應涵蓋上述及其他所有等效變化。
100,200:三角連桿式椎骨撐開裝置 101:軸心 101A:操作端 101B:開口 102:凸緣 103:固定部 104:移動塊 105:第一連接桿 106:第二連接桿 107A、107B、107C:(容許相對轉動之)連接部 109:螺帽
第1圖顯示根據本發明一實施例之三角連桿式椎骨撐開裝置的收合狀態。 第2圖顯示根據本發明一實施例之三角連桿式椎骨撐開裝置的撐開狀態。 第3圖顯示根據本發明一實施例之三角連桿式椎骨撐開裝置的爆炸圖。 第4圖顯示根據本發明另一實施例之三角連桿式椎骨撐開裝置的撐開狀態。 第5圖顯示第4圖實施例中之第一與第二連接桿。 第6圖顯示根據本發明另一實施例之三角連桿式椎骨撐開裝置的撐開狀態。 第7圖顯示根據本發明另一實施例之三角連桿式椎骨撐開裝置的收合狀態。
100:三角連桿式椎骨撐開裝置
101:軸心
101A:操作端
101B:開口
102:凸緣
103:固定部
104:移動塊
105:第一連接桿
106:第二連接桿
107A、107B、107C:(容許相對轉動之)連接部
109:螺帽

Claims (9)

  1. 一種三角連桿式椎骨撐開裝置，包含： 一軸心； 一固定部，其中該軸心穿過該固定部、並可相對於該固定部而轉動； 一移動塊，套連在該軸心上，並可因應軸心的轉動而在軸心的軸向上移動； 至少一第一連接桿，與固定部彼此以可相對轉動的方式連接； 至少一第二連接桿，與移動塊彼此以可相對轉動的方式連接，且與對應的第一連接桿彼此以可相對轉動的方式連接； 藉此，當軸心在固定部內轉動，導致移動塊遠離固定部時，第一連接桿與第二連接桿被撐開，以撐開脊椎骨。
  2. 如申請專利範圍第1項所述之三角連桿式椎骨撐開裝置，其中該第一連接桿較該第二連接桿為長。
  3. 如申請專利範圍第1項所述之三角連桿式椎骨撐開裝置，其中該軸心的外圍及該移動塊的內緣設有螺紋。
  4. 如申請專利範圍第1項所述之三角連桿式椎骨撐開裝置，其中該軸心的外圍包含一凸緣，可供抵接該固定部。
  5. 如申請專利範圍第1項所述之三角連桿式椎骨撐開裝置，更包含至少一螺帽，栓於該軸心的至少一端。
  6. 如申請專利範圍第1項所述之三角連桿式椎骨撐開裝置，其中該軸心的內部為中空，且設有注入與流出開口。
  7. 如申請專利範圍第6項所述之三角連桿式椎骨撐開裝置，其中該軸心在徑向設有流出開口。
  8. 如申請專利範圍第1項所述之三角連桿式椎骨撐開裝置，其中該軸心的一端為操作端，可使用對應的工具來轉動。
  9. 如申請專利範圍第8項所述之三角連桿式椎骨撐開裝置，其中該操作端為六角形。
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