TWI652037B - Expandable orthopedic implant - Google Patents
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- TWI652037B TWI652037B TW106146283A TW106146283A TWI652037B TW I652037 B TWI652037 B TW I652037B TW 106146283 A TW106146283 A TW 106146283A TW 106146283 A TW106146283 A TW 106146283A TW I652037 B TWI652037 B TW I652037B
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Abstract
一種可擴張骨科植入物,包括:一個套管、一支軸桿、一個第一擴張件以及一支第一連桿。此套管具有一個第一開口、一個第二開口以及穿過第一開口和第二開口的一個軸心。軸桿一端穿設於套管之中,另一端具有一個頂部突出於第一開口的外側。第一擴張件具有一個樞接於套管的第一端和一個第二端。第一連桿具有樞接於頂部的一個第一近端(proximal end)以及樞接於第二端的一個第一遠端(distal end)。當頂部沿著軸心的一個延伸方向遠離第一開口時,會推動第一連桿帶動第二端,沿著垂直軸心的第一方向遠離軸心。 An expandable orthopedic implant comprising: a cannula, a shaft, a first expansion member, and a first link. The sleeve has a first opening, a second opening, and an axis passing through the first opening and the second opening. One end of the shaft is disposed in the sleeve, and the other end has a top portion protruding from the outside of the first opening. The first expansion member has a first end pivoted to the sleeve and a second end. The first link has a first proximal end pivotally connected to the top and a first distal end pivotally connected to the second end. When the top portion is away from the first opening along an extending direction of the axis, the first link is pushed to drive the second end away from the axis along the first direction of the vertical axis.
Description
本揭露書是有關於一種植入性醫療器材。特別是有關於一種骨科植入物。 This disclosure is directed to an implantable medical device. In particular, there is an orthopedic implant.
從臨床觀察中發現,在骨折治療過程中使用骨科植入物進行固定,卻常因患者的骨密度不足,導致骨切效應(Superior cut-out)而失敗。以應用於治療股骨轉子間骨折常見的動態髖骨螺釘(Dynamic hip screw,DHS)、迦瑪骨釘(Gamma nail)和滑動式螺絲骨板(sliding screw plate)...等內固定器為例,但若患者的骨密度不足,植入髖骨螺釘之後,容易使股骨球頭內翻崩陷,進而使螺釘向上穿出股骨球頭,而導致植入物會發生失效、破壞和鬆脫等問題。 It has been found from clinical observation that the use of orthopedic implants for fixation during fracture treatment often fails due to insufficient bone density of the patient, resulting in a superior cut-out. For example, dynamic hip screw (DHS), Gamma nail, and sliding screw plate, which are commonly used in the treatment of intertrochanteric fractures of the femur, are used as examples. However, if the patient's bone density is insufficient, after the hip bone screw is implanted, it is easy to cause the femoral ball head to collapse and collapse, thereby causing the screw to penetrate the femoral ball head upward, which may cause failure, destruction and loosening of the implant. problem.
因此,有需要提供一種先進的可擴張骨科植入物,來解決習知技術所面臨的問題。 Therefore, there is a need to provide an advanced expandable orthopedic implant to solve the problems faced by conventional techniques.
本說明書的一實施例揭露一種可擴張骨科植入物,包括:一個套管、一支軸桿、一個第一擴張件以及一支第一連桿。 此套管具有一個第一開口和一個軸心。軸桿穿設於套管之中,並具有一個頂部凸設於第一開口的外側。第一擴張件具有一個樞接於套管的第一端和一個第二端。第一連桿具有樞接於頂部的一個第一近端(proximal end)以及樞接於第二端的一個第一遠端(distal end)。當頂部沿著軸心的延伸方向遠離第一開口時,會推動第一連桿帶動第二端,沿著垂直軸心的第一方向遠離軸心。 An embodiment of the present specification discloses an expandable orthopedic implant comprising: a cannula, a shaft, a first expansion member, and a first link. The sleeve has a first opening and an axis. The shaft is disposed in the sleeve and has a top protruding from the outside of the first opening. The first expansion member has a first end pivoted to the sleeve and a second end. The first link has a first proximal end pivotally connected to the top and a first distal end pivotally connected to the second end. When the top portion is away from the first opening along the extending direction of the axis, the first link is pushed to drive the second end away from the axis along the first direction of the vertical axis.
根據上述實施例,本說明書是在提供一種可擴張骨科植入物,包括套設於一個套管中的一支軸桿以及一個擴張件和一個連桿。其中,擴張件和連桿的一端彼此樞接,且二者的另一端則分別樞接在套管和連桿上。藉由推動連桿可帶動擴張件的第二端,沿著垂直軸心的方向遠離軸心,形成一個由套管邊緣向外擴張的卡掣機構,可增加骨科植入物與周邊鬆質骨接觸的面積及穩定度,防止骨科植入物在骨頭內部進一步旋轉、突穿或鬆脫,可大幅降低骨切效應的風險。 In accordance with the above embodiments, the present specification is directed to an expandable orthopedic implant comprising a shaft disposed in a sleeve and an expansion member and a linkage. Wherein, one end of the expansion member and the connecting rod are pivotally connected to each other, and the other ends of the connecting rod are respectively pivotally connected to the sleeve and the connecting rod. By pushing the connecting rod to drive the second end of the expanding member away from the axis in the direction of the vertical axis, a latching mechanism is formed which is outwardly expanded by the edge of the sleeve, which can increase the orthopedic implant and the surrounding cancellous bone The area and stability of the contact prevents the orthopedic implant from further rotating, protruding or loosening inside the bone, which greatly reduces the risk of osteotomy.
100、200、300、400、500、600、700、700A、700B、700C、700D、800‧‧‧擴張骨科植入物 100, 200, 300, 400, 500, 600, 700, 700A, 700B, 700C, 700D, 800‧‧‧ Expanded orthopedic implants
101‧‧‧套管 101‧‧‧ casing
101a‧‧‧第一開口 101a‧‧‧first opening
101b‧‧‧第二開口 101b‧‧‧ second opening
101c‧‧‧軸心 101c‧‧‧Axis
101d‧‧‧套管的管壁 101d‧‧‧ casing wall
101e、102d、401g‧‧‧螺旋狀凸出部 101e, 102d, 401g‧‧‧ spiral projections
101f‧‧‧第一連接位置 101f‧‧‧First connection location
101g、402d‧‧‧螺旋狀溝槽 101g, 402d‧‧‧ spiral groove
101M‧‧‧套管的第一部分 The first part of the 101M‧‧‧ casing
101N‧‧‧套管的第二部分 The second part of the 101N‧‧‧ casing
102‧‧‧軸桿 102‧‧‧ shaft
102a‧‧‧軸桿的頂部 102a‧‧‧Top of the shaft
102b‧‧‧軸桿的尾端 102b‧‧‧The end of the shaft
102c‧‧‧第二連接位置 102c‧‧‧second connection position
102e‧‧‧長通孔 102e‧‧‧Long through hole
102M‧‧‧軸桿的第三部分 The third part of the 102M‧‧‧ shaft
102N‧‧‧軸桿的第四部分 The fourth part of the 102N‧‧‧ shaft
103、203、303、803a‧‧‧第一擴張件 103, 203, 303, 803a‧‧‧ first expansion
103a、203a‧‧‧第一端 103a, 203a‧‧‧ first end
103b、203b、303b、403b‧‧‧第二端 103b, 203b, 303b, 403b‧‧‧ second end
103c、203c‧‧‧第一力臂 103c, 203c‧‧‧ first arm
104、204、304‧‧‧第一連桿 104, 204, 304‧‧‧ first link
104a、304a‧‧‧第一近端 104a, 304a‧‧‧ first proximal end
104b、204b、304b‧‧‧第一遠端 104b, 204b, 304b‧‧‧ first remote
104c、304c‧‧‧第二力臂 104c, 304c‧‧‧second arm
105‧‧‧第一樞軸 105‧‧‧First pivot
106‧‧‧第二樞軸 106‧‧‧Second pivot
108‧‧‧抗旋轉設計 108‧‧‧Anti-rotation design
108a‧‧‧凸出卡榫 108a‧‧‧ protruding card
108b‧‧‧停止平台 108b‧‧‧Stop platform
109‧‧‧錐形塞件 109‧‧‧Conical plug
203P‧‧‧本體部 203P‧‧‧ Body Department
203Q‧‧‧第一彎曲部 203Q‧‧‧First bend
304P‧‧‧桿體部 304P‧‧‧ Rod body
304Q‧‧‧第二彎曲部 304Q‧‧‧second bend
403、803b‧‧‧第二擴張件 403, 803b‧‧‧ second expansion
403a‧‧‧第三端 403a‧‧‧ third end
403b‧‧‧第四端 403b‧‧‧ fourth end
404‧‧‧第二連桿 404‧‧‧second link
404b‧‧‧第二遠端 404b‧‧‧second far end
603、803c‧‧‧第三擴張件 603, 803c‧‧‧ third expansion
604‧‧‧第三連桿 604‧‧‧third link
603a‧‧‧第五端 603a‧‧‧ fifth end
603b‧‧‧第六端 603b‧‧‧ sixth end
614‧‧‧貫穿孔 614‧‧‧through holes
r1、r2‧‧‧套管管壁的內徑 R1, r2‧‧‧ inner diameter of the casing wall
R‧‧‧第一開口的直徑 R‧‧‧Diameter of the first opening
H1、H2‧‧‧距離 H1, H2‧‧‧ distance
D‧‧‧軸心的延伸方向 D‧‧‧Axis extending direction
P‧‧‧預設距離 P‧‧‧Preset distance
L1‧‧‧第一方向 L1‧‧‧ first direction
L2‧‧‧第二方向 L2‧‧‧ second direction
L3‧‧‧第三方向 L3‧‧‧ third direction
K‧‧‧套管的外徑 K‧‧‧ outer diameter of the casing
S‧‧‧第一遠端到套管軸心的距離 S‧‧‧Distance of the first distal end to the cannula axis
θ 1、θ 2、θ 5、θ 61、θ 62、θ 63‧‧‧夾角 θ 1, θ 2, θ 5, θ 61, θ 62, θ 63‧‧‧ angle
為了對本說明書之上述及其他方面有更佳的瞭解,下文特舉實施例,並配合所附圖式詳細說明如下:第1A圖係根據本說明書的一實施例所繪示之可擴張骨科植入物擴張前的結構剖視圖;第1B圖係根據第1A圖繪示可擴張骨科植入物擴張前的局部結構剖視放大圖; 第1C圖係根據第1A圖繪示之可擴張骨科植入物擴張後的結構透視圖;第2A圖係根據本說明書的另一實施例所繪示之可擴張骨科植入物擴張前的結構剖視圖;第2B圖係根據第2A圖繪示之可擴張骨科植入物擴張後的結構透視圖;第3A圖係根據本說明書的又一實施例所繪示之可擴張骨科植入物擴張前的結構剖視圖;第3B圖係根據第3A圖繪示之可擴張骨科植入物擴張後的結構透視圖;第4A圖係根據本說明書的再一實施例所繪示之可擴張骨科植入物擴張前的結構剖視圖;第4B圖係根據第4A圖繪示可擴張骨科植入物擴張前的局部結構剖視放大圖;第4C圖係根據第4A圖繪示之可擴張骨科植入物擴張後的結構透視圖;第5圖係根據本說明書的一實施例所繪示之可擴張骨科植入物擴張後的結構透視圖;第6A圖係根據本說明書的一實施例所繪示之可擴張骨科植入物擴張前的結構透視圖;第6B圖係根據第6A圖繪示之可擴張骨科植入物擴張後的結構透視圖; 第7A圖至7E圖分別依照本說明書不同實施例繪示不同可擴張骨科植入物的結構俯視圖;第8圖係根據本說明書的一實施例所繪示的一種可擴張骨科植入物的部分結構透視圖;以及第9圖係繪示將包含第6A圖至第6B圖所繪示之可擴張骨科植入物的髖骨螺釘,植入患者髖骨後的結構示意圖。 In order to better understand the above and other aspects of the present specification, the following specific embodiments are described in detail below with reference to the accompanying drawings: FIG. 1A is an expandable orthopedic implant according to an embodiment of the present specification. A cross-sectional view of the structure before the expansion of the object; FIG. 1B is a cross-sectional enlarged view of the partial structure of the expandable orthopedic implant before expansion according to FIG. 1A; 1C is a perspective view of the structure of the expandable orthopedic implant after expansion according to FIG. 1A; FIG. 2A is a structure of the expandable orthopedic implant before expansion according to another embodiment of the present specification; 1B is a perspective view of the structure of the expandable orthopedic implant after expansion according to FIG. 2A; FIG. 3A is a view of the expandable orthopedic implant before expansion according to still another embodiment of the present specification. 3B is a perspective view of the structure of the expandable orthopedic implant after expansion according to FIG. 3A; FIG. 4A is an expandable orthopedic implant according to still another embodiment of the present specification. Sectional view of the structure before expansion; Figure 4B is a cross-sectional enlarged view of the expandable orthopedic implant prior to expansion according to Fig. 4A; and Fig. 4C is an expandable orthopedic implant expansion according to Fig. 4A FIG. 5 is a perspective view of the structure of the expandable orthopedic implant after expansion according to an embodiment of the present specification; FIG. 6A is illustrated according to an embodiment of the present specification. Expansion of the structure before the expansion of orthopedic implants FIG; architecture of FIG. 6B is a perspective view of the expansion of orthopedic implants in accordance with Figure 6A shows the expandable; 7A to 7E are plan views showing the structure of different expandable orthopedic implants according to different embodiments of the present specification; FIG. 8 is a portion of an expandable orthopedic implant according to an embodiment of the present specification; A perspective view of the structure; and FIG. 9 is a schematic view showing the structure of the hip screw including the expandable orthopedic implant illustrated in FIGS. 6A to 6B after implantation into the hip bone of the patient.
本說明書是提供一種可擴張骨科植入物,可增加骨科植入物與周邊鬆質骨接觸的面積及穩定度,大幅降低骨切效應的風險。為了對本說明書之上述實施例及其他目的、特徵和優點能更明顯易懂,下文特舉多個實施例,並配合所附圖式作詳細說明。 The present specification provides an expandable orthopedic implant that increases the area and stability of contact between the orthopedic implant and the surrounding cancellous bone, and greatly reduces the risk of osteotomy. The above-described embodiments and other objects, features and advantages of the present invention will become more apparent from the claims.
但必須注意的是,這些特定的實施案例與方法,並非用以限定本發明。本發明仍可採用其他特徵、元件、方法及參數來加以實施。較佳實施例的提出,僅係用以例示本發明的技術特徵,並非用以限定本發明的申請專利範圍。該技術領域中具有通常知識者,將可根據以下說明書的描述,在不脫離本發明的精神範圍內,作均等的修飾與變化。在不同實施例與圖式之中,相同或相似的元件,將以相同的元件符號加以表示。 However, it must be noted that these specific embodiments and methods are not intended to limit the invention. The invention may be practiced with other features, elements, methods and parameters. The preferred embodiments are merely illustrative of the technical features of the present invention and are not intended to limit the scope of the invention. Equivalent modifications and variations will be made without departing from the spirit and scope of the invention. In the different embodiments and the drawings, the same or similar elements will be denoted by the same element symbols.
請參照第1A圖至第1C圖,第1A圖係根據本說明書的一實施例所繪示之可擴張骨科植入物100擴張前的結構剖視圖。第1B圖係 根據第1A圖繪示可擴張骨科植入物100擴張前的局部結構剖視放大圖(為了清楚描繪起見,第1B圖並未繪示擴張件103和第一連桿104)。第1C圖係根據第1A圖繪示之可擴張骨科植入物100擴張後的結構透視圖。可擴張骨科植入物100至少包括一個套管101、一支軸桿102、一個第一擴張件103以及一支第一連桿104。 1A to 1C, FIG. 1A is a cross-sectional view showing the structure of the expandable orthopedic implant 100 before expansion according to an embodiment of the present specification. Figure 1B A cross-sectional enlarged view of a portion of the expandable orthopedic implant 100 prior to expansion of the expandable orthopedic implant 100 is shown in FIG. 1 (for clarity, FIG. 1B does not depict the expander 103 and the first link 104). 1C is a perspective view of the structure of the expandable orthopedic implant 100 as shown in FIG. 1A after expansion. The expandable orthopedic implant 100 includes at least one cannula 101, a shaft 102, a first expansion member 103, and a first link 104.
套管101可以是一種管狀殼體,兩端分別具有相互連通一個第一開口101a和第二開口101b及以及一個貫穿此管狀殼體第一開口101a和第二開口101b的軸心101c。在本說明書的一些實施例中,套管101管壁101d位於X-Y平面上的截面,可以具有一種多邊形圖案,例如三角形、四方形、六角形...等,圓形、橢圓形、規則弧形、不規則形。在本實施例中,套管101位於X-Y平面上的截面可以是圓形。第一開口101a和第二開口101b則係藉由套管101管壁101d的內側邊緣,所定義出來的圓形開口。軸心101c貫穿第一開口101a和第二開口101b的圓心。 The sleeve 101 may be a tubular housing having a first opening 101a and a second opening 101b and a shaft center 101c extending through the first opening 101a and the second opening 101b of the tubular housing, respectively. In some embodiments of the present specification, the sleeve 101 wall 101d is located in a section on the XY plane and may have a polygonal pattern such as a triangle, a square, a hexagon, etc., a circle, an ellipse, a regular arc. Irregular shape. In the present embodiment, the section of the sleeve 101 on the X-Y plane may be circular. The first opening 101a and the second opening 101b define a circular opening by the inner edge of the tube 101 wall 101d. The axis 101c penetrates the center of the first opening 101a and the second opening 101b.
套管101管壁101d的內徑可以具有至少兩種尺寸。例如,在本實施例中,套管101包括第一部分101M和第二部分101N。第一部分101M係由第一開口101a起算,延伸一段距離H1,一直到第一連接位置101f;套管101之管壁101d的內徑r1,實質上等於第一開口101a的直徑R。第二部分101N係由第一連接位置101f起算至第二開口101b;套管101管壁101d的內徑r2,實質上大於第一開口101a的直徑R。 The inner diameter of the tube 101 wall 101d may have at least two dimensions. For example, in the present embodiment, the sleeve 101 includes a first portion 101M and a second portion 101N. The first portion 101M is calculated from the first opening 101a and extends a distance H1 up to the first connection position 101f; the inner diameter r1 of the tube wall 101d of the sleeve 101 is substantially equal to the diameter R of the first opening 101a. The second portion 101N is calculated from the first connection position 101f to the second opening 101b; the inner diameter r2 of the tube 101 wall 101d is substantially larger than the diameter R of the first opening 101a.
另外,在本說明書的一些實施例中,套管101的管壁101d外側還可以包括環繞軸心101c的螺旋狀凸出部101e,用以增進套管101與被植入部位之周邊骨質或組織的摩擦力。套管101管壁101d由第一開口101a起算到第一連接位置101f的內側,還可以包括一個螺旋狀溝槽101g,凹設於套管101管壁101d的內側。 In addition, in some embodiments of the present specification, the outer side of the tube wall 101d of the cannula 101 may further include a spiral protrusion 101e surrounding the axis 101c for enhancing the bone or tissue surrounding the cannula 101 and the implanted site. Friction. The tube 101 wall 101d is calculated from the first opening 101a to the inner side of the first connection position 101f, and may further include a spiral groove 101g recessed inside the tube 101 wall 101d.
軸桿102穿設於套管101之中,並具有一個頂部102a和一個尾端102b。在本說明書的一些實施例中,軸桿102係一實心條狀長桿,尾端102b穿過套管101的第一開口101a,被套設於套管101之中。頂部102a則暴露於第一開口101a的外側。在本實施例中,軸桿102係一圓柱形長桿,頂部102a係一實心圓柱形軸轂(hub),且圓柱形軸轂(頂部102a)的直徑實質上大於圓柱形長桿(軸桿102)的直徑。值得注意的是,為了清楚描繪軸桿102與其他元件的連接關係,在第1A圖至第1C圖中並未繪示軸轂的完整結構。任何可用於軸桿102與其他元件的樞接結構,都未脫離此處所述軸轂的精神範圍。 The shaft 102 is disposed in the sleeve 101 and has a top portion 102a and a tail end 102b. In some embodiments of the present specification, the shaft 102 is a solid strip-shaped long rod, and the tail end 102b passes through the first opening 101a of the sleeve 101 and is sleeved in the sleeve 101. The top portion 102a is then exposed to the outside of the first opening 101a. In the present embodiment, the shaft 102 is a cylindrical long rod, the top portion 102a is a solid cylindrical hub, and the diameter of the cylindrical hub (top portion 102a) is substantially larger than the cylindrical long rod (shaft) 102) diameter. It should be noted that in order to clearly depict the connection relationship between the shaft 102 and other components, the complete structure of the hub is not shown in FIGS. 1A to 1C. Any pivotal structure that can be used for the shaft 102 and other components does not depart from the spirit of the hub described herein.
軸桿102的尺寸可以配合套管101管壁101d的內徑r1和r2而有所變化。例如在本實施例中,軸桿102包括一個第三部分102M和一個第四部分102N。第三部分102M由頂部102a起算,延伸一段距離H2,一直到第二連接位置102c;其直徑r3實質小於等於套管101管壁101d的內徑r1。第四部分102N由第二連接位置102c延伸至尾端102b,其直徑r4實質小於等於套管101管壁101d的內徑r2,且實質大於等於套管101管壁101d的內徑r1。距離H2實質上大於距離H1。 The size of the shaft 102 can vary depending on the inner diameters r1 and r2 of the tube wall 101d of the sleeve 101. For example, in the present embodiment, the shaft 102 includes a third portion 102M and a fourth portion 102N. The third portion 102M is calculated from the top portion 102a and extends a distance H2 up to the second connection position 102c; its diameter r3 is substantially less than or equal to the inner diameter r1 of the tube 101 wall 101d. The fourth portion 102N extends from the second attachment location 102c to the trailing end 102b, the diameter r4 of which is substantially less than or equal to the inner diameter r2 of the tube wall 101d of the sleeve 101, and substantially greater than or equal to the inner diameter r1 of the tube wall 101d of the sleeve 101. The distance H2 is substantially greater than the distance H1.
在本說明書的一些實施例中,軸桿102之第三部分102M的表面,還可以包括一個螺旋狀凸出部102d,與套管101第一部分101M之管壁101d內側的螺旋狀溝槽101g相互螺合。當軸桿102的螺旋狀凸出部102d相對於套管101的螺旋狀溝槽101g順向轉動,可以帶動軸桿102的頂部102a沿著軸心101c的延伸方向D遠離第一開口101a。當軸桿102的螺旋狀凸出部102d相對於套管101的螺旋狀溝槽101g反向轉動,可以帶動軸桿102的頂部102a沿著軸心101c的延伸方向D靠近第一開口101a。 In some embodiments of the present specification, the surface of the third portion 102M of the shaft 102 may further include a spiral projection 102d which is mutually opposite to the spiral groove 101g inside the tube wall 101d of the first portion 101M of the sleeve 101. Screwing. When the spiral projection 102d of the shaft 102 rotates relative to the spiral groove 101g of the sleeve 101, the top portion 102a of the shaft 102 can be driven away from the first opening 101a along the extending direction D of the shaft 101c. When the spiral projection 102d of the shaft 102 rotates in the opposite direction with respect to the spiral groove 101g of the sleeve 101, the top portion 102a of the shaft 102 can be brought closer to the first opening 101a along the extending direction D of the shaft 101c.
在本說明書的一些實施例中,可以更包括一抗旋轉設計108,位於軸桿102之第四部分102N和套管101之第二部分101N之間。其中,抗旋轉設計108可以是一種配合套管101管壁101d的內徑變化,所形成的卡榫設計。例如,在本實施例中,可以藉由精算軸桿102之頂部102a預設的最大延伸距離P,進而在軸桿102之第四部分102N的第二連接位置102c上設置一凸出卡榫108a;並透過設置在套管101之第二部分101N的第一連接位置101f,設置一個停止平台108b。換言之,頂部102a預設的最大延伸距離P實質等於距離H2和距離H1之間的差(即P=H2-H1)。 In some embodiments of the present specification, an anti-rotation design 108 may be further included between the fourth portion 102N of the shaft 102 and the second portion 101N of the sleeve 101. Wherein, the anti-rotation design 108 can be a cassette design formed to match the inner diameter of the tube wall 101d of the sleeve 101. For example, in the present embodiment, a protruding latch 108a can be disposed on the second connecting position 102c of the fourth portion 102N of the shaft 102 by the maximum extension distance P preset by the top portion 102a of the actuating shaft 102. And a stop platform 108b is provided through the first connection position 101f provided at the second portion 101N of the sleeve 101. In other words, the preset maximum extension distance P of the top portion 102a is substantially equal to the difference between the distance H2 and the distance H1 (ie, P = H2 - H1).
當軸桿102的頂部102a遠離第一開口101a的距離實質上超過一預設距離P(即軸桿102的頂部102a與凸出卡榫108a之間的距離)時,位於套管101第一連接位置101f的停止平台108b,和位於軸桿102第二連接位置102c的凸出卡榫108a相互卡合,以阻止軸桿102因順向轉動,使頂部102a進一步遠離第一開口101a。其 中,套管101之第二部分101N和軸桿102之第四部分102N之間的負公差範圍(拔模角範圍(draft angle)),實質介於0.1度至2度之間。 When the distance of the top portion 102a of the shaft 102 away from the first opening 101a substantially exceeds a predetermined distance P (ie, the distance between the top portion 102a of the shaft 102 and the protruding tab 108a), the first connection is located in the sleeve 101. The stop platform 108b of the position 101f and the projecting latch 108a at the second connection position 102c of the shaft 102 are engaged with each other to prevent the shaft 102 from rotating further away from the first opening 101a. its The negative tolerance range (draft angle) between the second portion 101N of the sleeve 101 and the fourth portion 102N of the shaft 102 is substantially between 0.1 and 2 degrees.
在本說明書的一些實施例中,還可以包括一個底部抗旋轉設計,位於軸桿102之尾端102b。例如,在本實施例中,底部抗旋轉設計可以是一種錐形塞件109。將錐形塞件109栓塞於套管101之第二部分101N之中,並抵靠在軸桿102的尾端102b。藉由負公差的設計,使錐形塞件109的側壁與套管101之第二部分101N之間產生緊迫固定。可更進一步防止軸桿102因反向轉動而向後退縮。 In some embodiments of the present specification, a bottom anti-rotation design may also be included, located at the trailing end 102b of the shaft 102. For example, in the present embodiment, the bottom anti-rotation design can be a tapered plug 109. The tapered plug member 109 is inserted into the second portion 101N of the sleeve 101 and abuts against the trailing end 102b of the shaft 102. By the negative tolerance design, a tight fixation between the side wall of the tapered plug 109 and the second portion 101N of the sleeve 101 is created. It is further prevented that the shaft 102 is retracted backward due to the reverse rotation.
在本說明書的一些實施例中,軸桿102還可以是一種中空的管狀結構。例如,在本實施例中,軸桿102具有穿過頂部102a至尾端102b的一個長通孔102e。當可擴張骨科植入物100被植入患部,例如股骨球頭,中時,可以將具有生物相容性的可注射填充劑,例如骨水泥(cement)或其他合適物質,經由長通孔102e,填充進入股骨球頭中,以促進骨質再生。 In some embodiments of the present specification, the shaft 102 can also be a hollow tubular structure. For example, in the present embodiment, the shaft 102 has a long through hole 102e that passes through the top portion 102a to the trailing end 102b. When the expandable orthopedic implant 100 is implanted in an affected part, such as a femoral head, a biocompatible injectable filler, such as cement or other suitable substance, can be passed through the long through hole 102e. Filled into the femoral head to promote bone regeneration.
第一擴張件103具有一個第一端103a和一個第二端103b。第一端103a藉由第一樞軸105樞接於套管101上;第二端103b樞接於第一連桿104上。在本說明書的一些實施例中,第一擴張件103可以是一種板狀結構、桿狀結構、椎狀結構或上述結構的任意組合。例如,在本實施例中,第一擴張件103可以是一種桿狀結構。且桿狀結構的本體具有垂直第一樞軸105的第一力臂103c。第一力臂103c 與套管101的軸心101c之間的夾角θ 1,會隨著第一擴張件103繞著第一樞軸105轉動的程度,而有所變化。在本實施例中,夾角θ 1的大小實質介於0°至70°之間。 The first expansion member 103 has a first end 103a and a second end 103b. The first end 103a is pivotally connected to the sleeve 101 by the first pivot 105; the second end 103b is pivotally connected to the first link 104. In some embodiments of the present specification, the first expansion member 103 can be a plate-like structure, a rod-like structure, a vertebral structure, or any combination of the above. For example, in the present embodiment, the first expansion member 103 may be a rod-like structure. And the body of the rod-like structure has a first force arm 103c that is perpendicular to the first pivot 105. First force arm 103c The angle θ 1 between the shaft 101c and the shaft 101c of the sleeve 101 varies depending on the extent to which the first expansion member 103 is rotated about the first pivot 105. In the present embodiment, the magnitude of the included angle θ 1 is substantially between 0° and 70°.
第一連桿104具有一個第一近端104a以及一個第一遠端104b。第一近端104a藉由一第二樞軸106樞接於軸桿102的頂部102a;第一連桿104具有垂直第二樞軸106的一第二力臂104c;且第一擴張件103的第二端103b和第一連桿104的第一遠端104b則係樞接於第一力臂103c和第二力臂104c的交叉點107上。軸桿102與第一連桿104的第二力臂104c之間的夾角θ 2,會隨著第一連桿104繞著第二樞軸106轉動的程度,而有所變化。在本實施例中,夾角θ 2的大小實質介於175°至90°之間。 The first link 104 has a first proximal end 104a and a first distal end 104b. The first proximal end 104a is pivotally connected to the top portion 102a of the shaft 102 by a second pivot 106; the first link 104 has a second force arm 104c perpendicular to the second pivot 106; and the first expansion member 103 The second end 103b and the first distal end 104b of the first link 104 are pivotally connected to the intersection 107 of the first force arm 103c and the second force arm 104c. The angle θ 2 between the shaft 102 and the second force arm 104c of the first link 104 varies with the extent to which the first link 104 rotates about the second pivot 106. In the present embodiment, the magnitude of the included angle θ 2 is substantially between 175° and 90°.
當順向轉動軸桿102,使軸桿102的頂部102a沿著軸心101c的延伸方向D遠離第一開口101a時,會推動第一連桿104帶動第一擴張件103的第二端103b,沿著垂直軸心101c的第一方向L1遠離套管101的軸心101c。此時,第一擴張件103的第二端103b和第一連桿104的第一遠端104b,會以套管101的軸心101c為中心,徑向向外擴張。相對地,當反向轉動軸桿102,使軸桿102的頂部102a沿著軸心101c的延伸方向D靠近第一開口101a時,會拉動第一連桿104帶動第一擴張件103的第二端103b,沿著垂直軸心101c的第一方向L1反向靠近套管101的軸心101c。此時,第一擴張件103的第二端103b和第一連桿104的第一遠端104b,會以套管101的軸心101c為中心,徑向向內收攏。 When the shaft 102 is rotated in the forward direction, the top portion 102a of the shaft 102 is moved away from the first opening 101a along the extending direction D of the shaft 101c, the first connecting rod 104 is pushed to drive the second end 103b of the first expanding member 103, The first direction L1 along the vertical axis 101c is away from the axis 101c of the sleeve 101. At this time, the second end 103b of the first expansion member 103 and the first distal end 104b of the first link 104 are radially outwardly expanded about the axis 101c of the sleeve 101. In contrast, when the shaft 102 is reversely rotated to bring the top portion 102a of the shaft 102 closer to the first opening 101a along the extending direction D of the shaft 101c, the first link 104 is pulled to drive the second portion of the first expansion member 103. The end 103b is reversely adjacent to the axis 101c of the sleeve 101 along the first direction L1 of the vertical axis 101c. At this time, the second end 103b of the first expansion member 103 and the first distal end 104b of the first link 104 are centered radially about the axis 101c of the sleeve 101.
在本說明書的一些實施例中,當第一擴張件103和第一連桿102完全收攏時,第一擴張件103和第一連桿104會完全位於套管101的外徑K範圍之內。當第一擴張件103和第一連桿104向外擴張到最大時,第一擴張件103的第二端103b(樞接於第一連桿104的第一遠端104b)會超出套管101的外徑K範圍之外。在本說明書的一些實施例中,第一擴張件103的第二端103b(樞接於第一連桿104的第一遠端104b)到套管101軸心101c的距離S,與套管101的外徑K比值(S/K),實質上介於0.1至3.5之間。 In some embodiments of the present specification, when the first expansion member 103 and the first link 102 are fully collapsed, the first expansion member 103 and the first link 104 may be completely within the outer diameter K of the sleeve 101. When the first expansion member 103 and the first link 104 are outwardly expanded to the maximum, the second end 103b of the first expansion member 103 (the first distal end 104b pivotally connected to the first link 104) may extend beyond the sleeve 101. Outside the outer diameter K range. In some embodiments of the present specification, the second end 103b of the first expansion member 103 (the first distal end 104b pivotally connected to the first link 104) is at a distance S from the axis 101c of the sleeve 101, and the sleeve 101 The outer diameter K ratio (S/K) is substantially between 0.1 and 3.5.
例如在本實施例中,當第一擴張件103和第一連桿10完全收攏時,第一擴張件103的第二端103b到套管101軸心101c的距離S,可以是套管101外徑K的0.6倍。當第一擴張件103和第一連桿104向外擴張到最大時,第一擴張件103的第二端103b到套管101軸心101c的距離S,可以是套管101外徑K的3倍。在其他實施例中,第一擴張件103的擴張程度,可根據第一擴張件103和第一連桿104的長度,以及二者與套管101及軸桿102之間樞接的角度來加以調整。 For example, in the present embodiment, when the first expansion member 103 and the first link 10 are completely closed, the distance S from the second end 103b of the first expansion member 103 to the axis 101c of the sleeve 101 may be outside the sleeve 101. 0.6 times the diameter K. When the first expansion member 103 and the first link 104 are outwardly expanded to the maximum, the distance S from the second end 103b of the first expansion member 103 to the axis 101c of the sleeve 101 may be 3 of the outer diameter K of the sleeve 101. Times. In other embodiments, the degree of expansion of the first expansion member 103 can be based on the length of the first expansion member 103 and the first link 104, and the angle between the two and the sleeve 101 and the shaft 102. Adjustment.
然而,在本說明書的一些實施例中,第一連桿104和第一擴張件103的連結方式,並不以此為限。請參照第2A圖和第2B圖。第2A圖係根據本說明書的另一實施例所繪示之可擴張骨科植入物200擴張前的結構剖視圖。第2B圖係根據第2A圖繪示之可擴張骨科植入物200擴張後的結構透視圖。其中,可擴張骨科植入物200 的結構大致與第1A圖至第1C圖所繪示的可擴張骨科植入物100類似,差別僅在於可擴張骨科植入物200的第一擴張件203形狀有所不同。 However, in some embodiments of the present specification, the manner in which the first link 104 and the first extender 103 are coupled is not limited thereto. Please refer to Figures 2A and 2B. 2A is a cross-sectional view of the expandable orthopedic implant 200 prior to expansion, in accordance with another embodiment of the present specification. 2B is a perspective view of the structure of the expandable orthopedic implant 200 after expansion according to FIG. 2A. Among them, expandable orthopedic implant 200 The structure is substantially similar to the expandable orthopedic implant 100 illustrated in FIGS. 1A-1C, except that the shape of the first expander 203 of the expandable orthopedic implant 200 is different.
在本實施例中,第一擴張件203包括相互連接的一個本體部203P以及一個第一彎曲部203Q。本體部203P具有與第一樞軸105垂直的第一力臂203c;第一端203a位於本體部203P上,藉由第一樞軸105與套管101樞接;且第二端203b位於第二彎曲部203Q上,並遠離第一力臂203c。與可擴張骨科植入物100相比,當第一擴張件203和第一連桿204在完全收攏時,第一擴張件203的第二端203b和第一連桿204的第一遠端204b會更靠近套管101軸心101c。因此,可節省可擴張骨科植入物200收攏時的徑向面積,以便於手術植入。 In the present embodiment, the first expansion member 203 includes a body portion 203P and a first bending portion 203Q that are connected to each other. The body portion 203P has a first force arm 203c perpendicular to the first pivot 105; the first end 203a is located on the body portion 203P, is pivotally connected to the sleeve 101 by the first pivot 105; and the second end 203b is located at the second The curved portion 203Q is located away from the first force arm 203c. The second end 203b of the first expansion member 203 and the first distal end 204b of the first link 204 when the first extension member 203 and the first link 204 are fully collapsed, as compared to the expandable orthopedic implant 100 Will be closer to the sleeve 101 axis 101c. Therefore, the radial area of the expandable orthopedic implant 200 when folded can be saved to facilitate surgical implantation.
值得注意的是,第一擴張件203之第一彎曲部203Q的外型並不限定為弧形。任何一種可以使第一擴張件203的第二端203b偏離第一力臂203c的彎折結構,都未脫離本說明書的精神範圍。 It should be noted that the appearance of the first curved portion 203Q of the first expansion member 203 is not limited to an arc shape. Any of the bent structures that can deflect the second end 203b of the first expansion member 203 from the first force arm 203c does not depart from the spirit of the present specification.
請參照第3A圖和第3B圖。第3A圖係根據本說明書的又一實施例所繪示之可擴張骨科植入物300擴張前的結構剖視圖。第3B圖係根據第3A圖繪示之可擴張骨科植入物300擴張後的結構透視圖。其中,可擴張骨科植入物300的結構大致與第1A圖至第1C圖所繪示的可擴張骨科植入物100類似,差別僅在於可擴張骨科植入物300的第一連桿304形狀有所不同。 Please refer to Figures 3A and 3B. 3A is a cross-sectional view of the expandable orthopedic implant 300 prior to expansion, in accordance with yet another embodiment of the present specification. Figure 3B is a perspective view of the structure of the expandable orthopedic implant 300 after expansion according to Figure 3A. Wherein, the structure of the expandable orthopedic implant 300 is substantially similar to the expandable orthopedic implant 100 illustrated in FIGS. 1A-1C, except for the shape of the first link 304 of the expandable orthopedic implant 300. It is different.
在本實施例中,第一連桿304包括相互連接的一個桿體部304P以及一個第二彎曲部304Q。桿體部304P具有垂直第二樞軸106的第二力臂304c;第一近端304a位於桿體部304P上,藉由第 二樞軸106與軸桿102的頂部102a;第一遠端304b位於第二彎曲部304Q上,遠離第二力臂304c,並與第一擴張件303的第二端303b樞接。與可擴張骨科植入物100相比,當第一擴張件303和第一連桿304在完全擴張時,第一擴張件303的第二端303b和第一連桿304的第一遠端304b,會更遠離套管101軸心101c。因此,當軸桿102的頂部102a向上移動相同距離時,可增大第一擴張件303和第一連桿304的徑向擴張面積。 In the present embodiment, the first link 304 includes a shaft portion 304P and a second curved portion 304Q that are connected to each other. The shaft portion 304P has a second force arm 304c perpendicular to the second pivot 106; the first proximal end 304a is located on the shaft portion 304P by The two pivots 106 and the top portion 102a of the shaft 102; the first distal end 304b is located on the second curved portion 304Q, away from the second force arm 304c, and pivotally connected to the second end 303b of the first expansion member 303. The second end 303b of the first expansion member 303 and the first distal end 304b of the first link 304 when the first extension member 303 and the first link 304 are fully expanded, as compared to the expandable orthopedic implant 100 Will be farther away from the sleeve 101 axis 101c. Therefore, when the top portion 102a of the shaft 102 is moved upward by the same distance, the radial expansion area of the first expansion member 303 and the first link 304 can be increased.
值得注意的是,第一連桿304之第二彎曲部304Q的外型並不限定為弧形。任何一種可以使第一連桿304的的第一遠端304b偏離第二力臂304c的彎折結構都未脫離本說明書的精神範圍。 It should be noted that the shape of the second curved portion 304Q of the first link 304 is not limited to an arc shape. Any of the bent structures that can bias the first distal end 304b of the first link 304 away from the second force arm 304c does not depart from the spirit of the present specification.
請參照第4A圖至第4C圖。第4A圖係根據本說明書的再一實施例所繪示之可擴張骨科植入物400擴張前的結構剖視圖。第4B圖係根據第4A圖繪示可擴張骨科植入物400擴張前的局部結構剖視放大圖(為了清楚描繪起見,第4B圖並未繪示第二擴張件403和第二連桿404)。第4C圖係根據第4A圖繪示之可擴張骨科植入物400擴張後的結構透視圖。 Please refer to Figures 4A to 4C. 4A is a cross-sectional view of the expandable orthopedic implant 400 prior to expansion in accordance with yet another embodiment of the present specification. 4B is a partial cross-sectional enlarged view of the expandable orthopedic implant 400 before expansion according to FIG. 4A (for clarity of illustration, FIG. 4B does not show the second expansion member 403 and the second link. 404). Figure 4C is a perspective view of the structure of the expandable orthopedic implant 400 after expansion according to Figure 4A.
其中,可擴張骨科植入物400的結構大致與第1A圖至第1C圖所繪示的可擴張骨科植入物100類似。差別在於可擴張骨科植入物400還包括一個第二擴張件403和一支第二連桿404。其中,第二擴張件403具有一個第三端403a和一個第四端403b;第三端403a樞接於套管101;第二連桿404具有樞接於 軸桿102頂部102a的一個第二近端404a以及樞接於第四端403a的一個第二遠端404b。 The structure of the expandable orthopedic implant 400 is substantially similar to the expandable orthopedic implant 100 illustrated in FIGS. 1A-1C. The difference is that the expandable orthopedic implant 400 further includes a second expansion member 403 and a second link 404. The second extension 403 has a third end 403a and a fourth end 403b; the third end 403a is pivotally connected to the sleeve 101; the second link 404 is pivotally connected to the sleeve A second proximal end 404a of the top portion 102a of the shaft 102 and a second distal end 404b pivotally coupled to the fourth end 403a.
另外,可擴張骨科植入物400的軸桿102之第三部分102M的表面,可包括一個螺旋狀溝槽402d,與套管101第一部分101M之管壁101d內側的螺旋狀凸出部401g相互螺合。當順向轉動軸桿102使頂部102a沿著軸心101c的延伸方向D遠離第一開口101a時,會推動第二連桿404帶動第二擴張件403的第四端403b,沿著垂直軸心101c的第二方向L2遠離套管101的軸心101c。 In addition, the surface of the third portion 102M of the shaft 102 of the expandable orthopedic implant 400 may include a helical groove 402d that is mutually opposite to the helical projection 401g on the inner side of the tube wall 101d of the first portion 101M of the sleeve 101. Screwing. When the shaft 102 is rotated in the forward direction to move the top portion 102a away from the first opening 101a along the extending direction D of the axis 101c, the second link 404 is pushed to drive the fourth end 403b of the second expansion member 403 along the vertical axis. The second direction L2 of 101c is away from the axis 101c of the sleeve 101.
在本實施例中,第一方向L1和第二方向L2二者可以彼此平行,但方向相反。換言之,第一方向L1和第二方向L2二者夾一個實質為180°的平角。但在本說明書的一些實施例第二擴張件403和第二連桿404的擴張方向,可以依照植入部位骨質密度與所承受應力的需求,而使第一方向L1和第二方向L2夾一個小於180°的非平角θ 5(如第5圖所繪示的可擴張骨科植入物500)。 In the present embodiment, both the first direction L1 and the second direction L2 may be parallel to each other but in opposite directions. In other words, both the first direction L1 and the second direction L2 sandwich a substantially flat angle of 180°. However, in some embodiments of the present specification, the expansion direction of the second extension member 403 and the second link 404 may be such that the first direction L1 and the second direction L2 are sandwiched according to the bone density of the implant site and the stress required. A non-flat angle θ 5 of less than 180° (as shown in Figure 5 of the expandable orthopedic implant 500).
雖然,在第4A圖至第4C圖和第5圖的實施例中,第一擴張件103的尺寸(例如長度和/或寬度)和第二擴張件403相同;第一連桿104的尺寸和第二連桿404相同。但在其他實施例中,可以根據植入部位骨質密度與所承受應力的需求,改變第一擴張件103、第二擴張件403、第一連桿104和第二連桿404的 尺寸,使第一擴張件103的尺寸和第二擴張件403不同,或使第一連桿104的尺寸和第二連桿404不同。 Although, in the embodiments of FIGS. 4A to 4C and 5, the size (e.g., length and/or width) of the first expansion member 103 is the same as that of the second expansion member 403; the size of the first link 104 and The second link 404 is the same. However, in other embodiments, the first expansion member 103, the second expansion member 403, the first link 104, and the second link 404 may be changed according to the bone density of the implant site and the stress required. The size is such that the first expansion member 103 is different in size from the second expansion member 403 or that the first link 104 is different in size from the second link 404.
請參照第6A圖和第6B圖,第6A圖係根據本說明書的一實施例所繪示之可擴張骨科植入物600擴張後的結構透視圖。第6B圖係根據第6A圖繪示之可擴張骨科植入物600擴張後的結構透視圖。可擴張骨科植入物600的結構大致與第4C圖所繪示的可擴張骨科植入物400相似。差別在於,可擴張骨科植入物600更包括一個第三擴張件603和一支第三連桿604。 Referring to FIGS. 6A and 6B, FIG. 6A is a perspective view of the structure of the expandable orthopedic implant 600 after expansion according to an embodiment of the present specification. Figure 6B is a perspective view of the structure of the expandable orthopedic implant 600 after expansion according to Figure 6A. The structure of the expandable orthopedic implant 600 is generally similar to the expandable orthopedic implant 400 depicted in FIG. 4C. The difference is that the expandable orthopedic implant 600 further includes a third expansion member 603 and a third link 604.
其中,第三擴張件603具有一個第五端603a和一個第六端603b。第五端603a樞接於套管101;第三連桿604a具有樞接於軸桿102之頂部102a的一個第三近端604a以及樞接於第六端603b的一個第三遠端604b。當順向轉動軸桿102使頂部102a沿著軸心101c的延伸方向D遠離第一開口101a時,會推動第二連桿604帶動第二擴張件603的第六端603b,沿著垂直軸心101c的第三方向L3遠離套管101的軸心101c。 Wherein, the third expansion member 603 has a fifth end 603a and a sixth end 603b. The fifth end 603a is pivotally connected to the sleeve 101; the third link 604a has a third proximal end 604a pivotally connected to the top portion 102a of the shaft 102 and a third distal end 604b pivotally connected to the sixth end 603b. When the shaft 102 is rotated in the forward direction to move the top portion 102a away from the first opening 101a along the extending direction D of the axis 101c, the second link 604 is pushed to drive the sixth end 603b of the second expansion member 603 along the vertical axis. The third direction L3 of 101c is away from the axis 101c of the sleeve 101.
在本實施例中,第一方向L1和第二方向L2所形成的夾角θ 61、第二方向L2和第三方向L3所形成的夾角θ 62以及第一方向L1和第三方向L3所形成的夾角θ 63恰好構成一個圓周角(360°)。其中夾角θ 61、θ 62和θ 63三者相等(即分別為120°)。但如前所述,第三擴張件603和第三連桿604的擴張方向,可以依照植入部位骨質密度與所承受應力的需求,而使夾角θ 61、θ 62和θ 63的大小有不同的安排。例如,在本說明書的其 他實施例中,夾角θ 61、θ 62和θ 63三者可以彼此不相等或僅其中二者相等。 In the present embodiment, the angle θ 61 formed by the first direction L1 and the second direction L2, the angle θ 62 formed by the second direction L2 and the third direction L3, and the first direction L1 and the third direction L3 are formed. The included angle θ 63 constitutes a circumferential angle (360°). The angles θ 61, θ 62 and θ 63 are equal (ie 120° respectively). However, as described above, the expansion direction of the third expansion member 603 and the third link 604 may be different depending on the bone density at the implantation site and the stress required, and the angles θ 61, θ 62 and θ 63 may be different. s arrangement. For example, in this specification In his embodiment, the angles θ 61, θ 62 and θ 63 may not be equal to each other or only two of them may be equal.
另外,為了增加可擴張骨科植入物600的應力承載能力,在本實施例之中,第一擴張件103、第二擴張件403以及第三擴張件603可以是一種弧形的板狀結構,在收攏時可以實質平行套管101的管壁101d。且第一擴張件103、第二擴張件403以及第三擴張件603還分別包括一個螺旋狀凸出部613,分別凸設於第一擴張件103、第二擴張件403以及第三擴張件603擴張件遠離套管101軸心101c的表面上,並且與套管101管壁101d外側的螺旋狀凸出部101e共用軸心101c。 In addition, in order to increase the stress carrying capacity of the expandable orthopedic implant 600, in the present embodiment, the first expanding member 103, the second expanding member 403, and the third expanding member 603 may be an arc-shaped plate-like structure. The wall 101d of the sleeve 101 can be substantially parallel when folded. The first expansion member 103, the second expansion member 403, and the third expansion member 603 further include a spiral protrusion 613 protruding from the first expansion member 103, the second expansion member 403, and the third expansion member 603, respectively. The expansion member is away from the surface of the shaft 101c of the sleeve 101, and shares the axis 101c with the spiral projection 101e on the outer side of the tube wall 101d of the sleeve 101.
在本說明書的一些實施例之中,可擴張骨科植入物600可以採用生物可分解材料,例如採用以鎂、鐵、錳或上述合金,為基底的生物可分解組合物,製作而成。為了增進可擴張骨科植入物600在生物體中的分解速度。可以在套管101、軸桿102、第一擴張件103、第二擴張件403以及第三擴張件603其中至少一者上,形成至少一個貫穿孔614。在本實施例之中,可以在套管101形成複數個貫穿孔614,以促進此一區塊的生物分解速率。 In some embodiments of the present specification, the expandable orthopedic implant 600 can be fabricated using a biodegradable material, such as a biodegradable composition based on magnesium, iron, manganese, or the alloy described above. To increase the rate of decomposition of the expandable orthopedic implant 600 in the organism. At least one through hole 614 may be formed in at least one of the sleeve 101, the shaft 102, the first expansion member 103, the second expansion member 403, and the third expansion member 603. In this embodiment, a plurality of through holes 614 may be formed in the sleeve 101 to promote the rate of biodegradation of the block.
值得注意的是,可擴張骨科植入物600之擴張件和連桿的數目並不以此為限。在容納空間許可的範圍之內,可以包括更多的擴張件和連桿。例如,請參照第7A圖至7E圖,第7A圖至7E圖分別依照本說明書不同實施例,繪示不同可擴張骨科植入物700、700A、700B、700C和700D的結構俯視圖。其中, 可擴張骨科植入物700、700A、700B、700C和700D的結構,可以分別具有四組、五組、六組、七組和八組由擴張件703和連桿704所組成的卡掣結構。 It is worth noting that the number of expansion members and connecting rods of the expandable orthopedic implant 600 is not limited thereto. More expansion members and connecting rods may be included within the scope of the accommodation space permit. For example, please refer to FIGS. 7A-7E, and FIGS. 7A-7E illustrate top views of different expandable orthopedic implants 700, 700A, 700B, 700C, and 700D, respectively, in accordance with various embodiments of the present specification. among them, The structures of the expandable orthopedic implants 700, 700A, 700B, 700C, and 700D may have four, five, six, seven, and eight sets of cassette structures consisting of an expansion member 703 and a link 704, respectively.
另外,可擴張骨科植入物600的擴張件和連桿,亦可具有其他可能的的形狀。例如,請參照第8圖,第8圖係根據本說明書的一實施例所繪示的一種可擴張骨科植入物800的部分結構透視圖。其中,可擴張骨科植入物800的結構大致與第6A圖和第6B圖所繪示的可擴張骨科植入物600相似。差別在於,可擴張骨科植入物800的第一擴張件803a、第二擴張件803b以及第三擴張件803c皆為平板結構。 Additionally, the expandable members and links of the expandable orthopedic implant 600 can have other possible shapes. For example, please refer to FIG. 8 , which is a partial structural perspective view of an expandable orthopedic implant 800 in accordance with an embodiment of the present specification. Therein, the structure of the expandable orthopedic implant 800 is substantially similar to the expandable orthopedic implant 600 depicted in FIGS. 6A and 6B. The difference is that the first expansion member 803a, the second expansion member 803b, and the third expansion member 803c of the expandable orthopedic implant 800 are all flat plate structures.
請參照第9圖,第9圖係繪示將包含第6A圖至第6B圖所繪示之可擴張骨科植入物600的髖骨螺釘,植入患者髖骨後的結構示意圖。在將包含可擴張骨科植入物600的髖骨螺釘植入患者髖骨的預定位置之後,可藉由調整製具91,順向轉動軸桿102使第一擴張件103、第二擴張件403以及第三擴張件603以套管101的軸心101c為中心,徑向向外擴張,藉以增加髖骨螺釘與股骨球頭周邊鬆質骨接觸的面積及穩定度,防止髖骨螺釘在股骨球頭內部進一步旋轉、突穿或鬆脫,可大幅降低髖關節固定手術過程中,發生骨切效應的風險。 Please refer to FIG. 9. FIG. 9 is a schematic view showing the structure of the hip bone screw including the expandable orthopedic implant 600 shown in FIGS. 6A to 6B after implantation into the hip bone of the patient. After the hip bone screw including the expandable orthopedic implant 600 is implanted into a predetermined position of the patient's hip bone, the first expansion member 103 and the second expansion member 403 can be rotated by the shaft 91 by adjusting the tool 91. And the third expansion member 603 is radially outwardly expanded with the axial center 101c of the cannula 101 as a center, thereby increasing the area and stability of the contact between the hip bone screw and the cancellous bone around the femoral ball head, and preventing the hip bone screw from being in the femoral ball. Further rotation, penetration or loosening inside the head can significantly reduce the risk of osteotomy during hip fixation.
然而,本說明書所提供之可擴張骨科植入物的應用範圍,並不以此為限。上述實施例所提供的可擴張骨科植入物,仍可應用於其他骨科手術之中,用來對患部骨骼進行固定、連接、 填充、支撐、拉伸或提供其他可能的物理或生理功能。例如,在本說明書的些實施例之中,上述可擴張骨科植入物可應用於可擴張的韌帶骨釘、可擴張的脊椎椎體護架(cage)、可擴張的椎弓根螺釘(pedicle screw)或其他合適的骨科植入物。 However, the scope of application of the expandable orthopedic implant provided by the present specification is not limited thereto. The expandable orthopedic implant provided by the above embodiments can still be applied to other orthopedic operations to fix and connect the affected bones. Fill, support, stretch or provide other possible physical or physiological functions. For example, in some embodiments of the present specification, the expandable orthopedic implant described above can be applied to an expandable ligament bone nail, an expandable spinal vertebral body cage, and an expandable pedicle screw (pedicle). Screw) or other suitable orthopedic implant.
根據上述實施例,本說明書是在提供一種可擴張骨科植入物,包括套設於一個套管中的一支軸桿以及一個擴張件和一個連桿。其中,擴張件和連桿的一端彼此樞接,且二者的另一端則分別樞接在套管和連桿上。藉由推動連桿可帶動擴張件的第二端,沿著垂直軸心的方向遠離軸心,形成一個由套管邊緣向外擴張的卡掣機構,可增加骨科植入物與周邊鬆質骨接觸的面積及穩定度,防止骨科植入物在骨頭內部進一步旋轉、突穿或鬆脫,可大幅降低骨切效應的風險。 In accordance with the above embodiments, the present specification is directed to an expandable orthopedic implant comprising a shaft disposed in a sleeve and an expansion member and a linkage. Wherein, one end of the expansion member and the connecting rod are pivotally connected to each other, and the other ends of the connecting rod are respectively pivotally connected to the sleeve and the connecting rod. By pushing the connecting rod to drive the second end of the expanding member away from the axis in the direction of the vertical axis, a latching mechanism is formed which is outwardly expanded by the edge of the sleeve, which can increase the orthopedic implant and the surrounding cancellous bone The area and stability of the contact prevents the orthopedic implant from further rotating, protruding or loosening inside the bone, which greatly reduces the risk of osteotomy.
雖然本發明已以較佳實施例揭露如上,然其並非用以限定本發明,任何該技術領域中具有通常知識者,在不脫離本發明之精神和範圍內,當可作些許之更動與潤飾,因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 While the invention has been described above by way of a preferred embodiment, it is not intended to limit the invention, and it is to be understood by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
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