TWI694808B - 骨撐開裝置 - Google Patents

骨撐開裝置 Download PDF

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TWI694808B
TWI694808B TW106113985A TW106113985A TWI694808B TW I694808 B TWI694808 B TW I694808B TW 106113985 A TW106113985 A TW 106113985A TW 106113985 A TW106113985 A TW 106113985A TW I694808 B TWI694808 B TW I694808B
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fastener
bone
component
cavity
item
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劉保興
沈世軒
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義守大學
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Priority to CN201810348056.4A priority patent/CN108784818B/zh
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442Intervertebral or spinal discs, e.g. resilient
    • A61F2/4425Intervertebral or spinal discs, e.g. resilient made of articulated components
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/885Tools for expanding or compacting bones or discs or cavities therein
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/885Tools for expanding or compacting bones or discs or cavities therein
    • A61B17/8852Tools for expanding or compacting bones or discs or cavities therein capable of being assembled or enlarged, or changing shape, inside the bone or disc
    • A61B17/8858Tools for expanding or compacting bones or discs or cavities therein capable of being assembled or enlarged, or changing shape, inside the bone or disc laterally or radially expansible
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    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7062Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
    • A61B17/7064Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
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    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
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    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
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    • AHUMAN NECESSITIES
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    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
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    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802Equipment for handling bone cement or other fluid fillers
    • A61B17/8805Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802Equipment for handling bone cement or other fluid fillers
    • A61B17/8833Osteosynthesis tools specially adapted for handling bone cement or fluid fillers; Means for supplying bone cement or fluid fillers to introducing tools, e.g. cartridge handling means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4601Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30471Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
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    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442Intervertebral or spinal discs, e.g. resilient
    • A61F2/4425Intervertebral or spinal discs, e.g. resilient made of articulated components
    • A61F2002/443Intervertebral or spinal discs, e.g. resilient made of articulated components having two transversal endplates and at least one intermediate component

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Abstract

一種骨撐開裝置,包含二個撐開部件、伸縮件、以及扣件,每一個撐開部件包含二個活動部以及固定部,扣件緊固二個撐開部件的固定部以形成腔體,伸縮件設置於腔體中,伸縮件包含第一部件以及第二部件,移動第一部件或第二部件能改變伸縮件的長度,當伸縮件的長度變長時,伸縮件的外端部分別抵推四個活動部,使四個活動部同時被撐開,藉以使塌陷的骨被撐開。

Description

骨撐開裝置
本發明係關於一種骨撐開裝置,尤指利用以撐開塌陷的骨的骨撐開裝置。
骨質疏鬆易造成骨塌陷,例如會造成椎體(Spine)的壓迫性骨折,近年此類患者愈來愈多,雖然相關手術與器械日漸改進,但目前手術器械在臨床上仍有許多問題,例如對椎體骨質材料的過度破壞、椎體高度的二次塌陷、椎體塌陷高度及角度的重建不足、以及骨水泥(Bone Cement)溢漏等失敗因素。
目前臨床上治療椎體壓迫性骨折的手術,有椎體成形術(Vertebroplasty)、氣球成形術(Kyphoplasty)、及椎體撐開技術(Vertebral Expandable Implant),其中以椎體撐開技術是目前臨床上較新的手術方式,透過金屬撐開器在椎體長軸方向對椎體的撐開,並灌入骨水泥進行填充固定,以恢復塌陷椎體。
雖然臨床已經存在上述的治療方法,但目前手術後仍會發生許多的失敗問題:如椎體成形術,沒有恢復椎體高度的功能,且會發生骨水泥溢漏的嚴重問題。氣球成形術撐開氣球的過程中容易發生氣球破裂的風險,且取出氣球後,將失去支撐力量而造成椎體高度的再次塌陷。目前的椎體撐開技術利用金屬器械撐開坍塌的椎體,撐開的效果不一,常有椎體撐開高度缺乏、骨水泥灌注空間不足的問題,甚至不精準的撐開高度會使脊椎曲線變形。
因此,本發明的主要目的在於提供一種近於前述椎體撐開技術的骨撐開裝置,以解決上述問題。
本發明之目的在提供一種骨撐開裝置,能穩固安全的撐開塌陷的骨或椎體,而可安全產生骨水泥灌注空間,除了能有效防止骨水泥溢漏之外,並能使醫療單位根據椎體塌陷程度,調整所需的椎體重建高度,且可以針對變形脊椎曲線進行角度調整,再者,整個骨撐開裝置收整起來長度較短,且可以連續無段或多段式的調整支撐高度,並且具有較強的支撐力。
本發明係關於一種骨撐開裝置,骨撐開裝置包含二個撐開部件、伸縮件、以及扣件。
該二撐開部件能相互疊合以包覆形成腔體,撐開部件包含二活動部以及固定部。撐開部件的中段為固定部,撐開部件的兩端為該二活動部,活動部連接且延伸自固定部,活動部係能於連接固定部的位置彎折。扣件緊固該二撐開部件的該二固定部。
伸縮件設置於腔體中,包含第一部件以及第二部件,第一部件係活動套接於第二部件。其中,移動第一部件或第二部件,會使伸縮件伸長或縮短,係能改變伸縮件的長度。
其中,當伸縮件的長度變長時,伸縮件的相對二外端部分別抵推該二撐開部件的四個活動部鄰近腔體之側面,使四個活動部背向腔體撐開。
伸縮件有多種實施方式,其一例係如前述之骨撐開裝置,第一部件的內側以及第二部件的外側係相互對應而分別具有螺紋,第一部件係套接螺合於第二部件,其中轉動第一部件或第二部件,係能改變伸縮件的長度。
當第一部件與第二部件為相互螺合的實施方式時,可於第一部件或第二部件的外端設有操作軸孔,供外部的工具件嵌插緊配以轉動第一部件或第二部件。
伸縮件之又一例為,第一部件的內側以及第二部件的外側係相互對應而分別具有棘齒,其中拉動第一部件或第二部件,係能改變伸縮件的長度。
伸縮件之再一例為,第一部件具有至少一滑槽,第二部件具有配合所述至少一滑槽的至少一滑塊,其中拉動第一部件或第二部件,係能改變伸縮件的長度。
關於扣件也有多種實施例,其一例為扣件係為至少一C型扣件,利用C型扣件之彈性力夾持該二固定部。
又一例為,扣件係為雙扣接結構,雙扣接結構包含二扣接件,其中一個扣接件的至少一端部,係對應鉤扣於另一個扣接件的至少一端部。
再一例為扣件亦為雙扣接結構,雙扣接結構包含二扣接件,其中一個扣接件的至少一端部,係對應軸接於另一個扣接件的至少一端部。
因此,利用本發明所提供一種骨撐開裝置,藉由伸縮件撐開撐開部件,能穩固安全的撐開塌陷的骨或椎體,而可安全產生骨水泥灌注空間,除了能有效防止骨水泥溢漏之外,並能使醫療單位根據椎體塌陷程度,調整所需的椎體重建高度,且可以針對變形脊椎曲線進行角度調整,再者,整個骨撐開裝置收整起來長度較短,且可以連續無段或多段式的調整支撐高度,並且具有較強的支撐力。
關於本發明之優點與精神可以藉由以下的發明詳述及所附圖式得到進一步的瞭解。
請參閱圖1A,圖1A係本發明骨撐開裝置10收覆狀態之外觀示意圖。圖示為骨撐開裝置10的收覆狀態,由圖中可見扣件34緊固二個上、下疊合的撐開部件32,使二個撐開部件32能相互結合如膠囊一般,並包覆以於之間形成一個腔體,此收覆狀態的骨撐開裝置10體積小,便於植入塌陷的骨中,例如植入塌陷的椎體中。
請參閱圖1B,圖1B係本發明骨撐開裝置10伸展狀態之外觀示意圖。圖示為骨撐開裝置10的伸展狀態,由圖中可見螺栓組36伸展而撐開二個撐開部件32的兩端,此伸展狀態可以使塌陷的骨被撐開,例如撐開塌陷的椎體。
請同時參閱圖2A以及圖2B,圖2A係本發明骨撐開裝置10之爆炸示意圖。圖2B係本發明骨撐開裝置10伸展狀態之側視圖。本發明係關於一種骨撐開裝置10,骨撐開裝置10包含二個撐開部件32、以螺栓組36為例的伸縮件、以及扣件34。
撐開部件32包含分置兩端的二個活動部3202以及固定部3204,撐開部件32的中段為固定部3204,撐開部件32的兩端為該二活動部3202。活動部3202連接且延伸自固定部3204,活動部3202連接固定部3204的部分為變形部3206,變形部3206較薄或是結構強度較弱,容易被彎折,因此,藉由活動部3202連接固定部3204位置的變形部3206彎折,使活動部3202相對固定部3204而彎折向外伸展。
固定部3204的外側的表面結構為扣接部3208,扣接部3208的結構形狀配合扣件34內側的結構形狀,所以扣件34可以穩固的扣接在扣接部3208上,使該二撐開部件32上、下疊合成類似膠囊的結構。其中,該二撐開部件32可採用為薄型鋼片為佳。
此圖例的伸縮件為螺栓組36,螺栓組36設置於腔體中,第一部件及第二部件分別為螺母件3602及螺公件3604,所以螺栓組36包含螺母件3602以及螺公件3604。螺母件3602的內側以及螺公件3604的外側係相互對應而分別具有螺紋,因此,螺母件3602套接螺合於螺公件3604。
其中,轉動螺母件3602或螺公件3604,係能改變螺栓組36的總長度,使螺栓組36以固定部3204為中心向兩側伸長或縮短。
螺母件3602或螺公件3604的外端以具有操作軸孔36H為佳,操作軸孔36H如圖中為六角孔,可供外部的工具件(圖未示)嵌插緊配以轉動螺母件3602或螺公件3604,藉以使螺栓組36伸長或縮短。此外,螺母件3602以及螺公件3604的螺紋面分別具有通透的至少一槽孔36S,槽孔36S可便於骨水泥流通,利於灌注骨水泥。
扣件34用於緊固該二撐開部件32的該二固定部3204,有多種實施態樣將分述於後。在此圖例中扣件34係採用一個C型扣件34,利用C型扣件34之彈性力夾持該二固定部3204。
腔體的側視形狀以菱形或是類似菱形為佳,當螺栓組36的長度變長時,螺栓組36的相對二外端部36T分別沿著腔體的菱形斜面,抵推該二撐開部件32的四個活動部3202鄰近腔體之側面,使四個活動部3202背向腔體被撐開。其中,活動部3202鄰近腔體之側面具有導溝32C,導溝32C沿螺栓組36伸長的方向延伸,導溝32C有助於導向外端部36T定向滑動,並且,活動部3202背向腔體之側面具有平面部32P,平面部32P有助於以大接觸面頂推塌陷的骨,避免接觸面積小應力過大造成對骨的再度損壞。
以上係伸縮件為螺栓組36的實施例,伸縮件尚有其他的實施例,請參閱圖3A以及圖3B,圖3A以及圖3B為本發明具有棘齒伸縮件實施例的示意圖。此例的伸縮件為棘齒組46,棘齒組46亦設置於腔體中,第一部件及第二部件分別為母棘齒件4602及公棘齒件4604,所以棘齒組46包含母棘齒件4602以及公棘齒件4604。母棘齒件4602的內側以及公棘齒件4604的外側係相互對應而分別具有環狀的棘齒,其中拉動母棘齒件4602或公棘齒件4604,能使棘齒組46伸長,並且母棘齒件4602與公棘齒件4604的棘齒相互卡接而使棘齒組46的長度固定。
請參閱圖4A以及圖4B,圖4A以及圖4B為本發明滑動式伸縮件實施例之示意圖。此例的伸縮件為滑動組56,滑動組56亦設置於腔體中,第一部件及第二部件分別為母滑套件5602及公滑套件5604,所以滑動組56包含母滑套件5602以及公滑套件5604。母滑套件5602具有至少一滑槽60,公滑套件5604具有配合所述至少一滑槽60的至少一滑塊62。圖例中母滑套件5602上為一條螺旋狀長長的滑槽60,公滑套件5604的外側表面則固設有一個滑塊62,滑槽60上部分設有鋸齒狀的卡孔,可以使滑塊62定位。其中拉動母滑套件5602或公滑套件5604,係使滑塊62滑動於滑槽60中,能改變滑動組56的長度,並由滑塊62卡接卡孔而能固定滑動組56的長度。
請參閱圖5,圖5係本發明扣件34之另一例示意圖。如前述之骨撐開裝置10,於圖例中扣件可採用為二個C型扣件34對向扣接,也是利用C型扣件34之彈性力夾持該二撐開部件32的該二固定部3204。二個C型扣件34相互對向扣接,更可以減少滑脫分離的機會。
請參閱圖6,圖6係本發明扣件34之再一例示意圖。扣件34可為雙扣接結構,雙扣接結構包含二個扣接件3402、3404,此圖例的二個扣接件3402、3404分別固定設於該二撐開部件32的該二固定部3204。其中,扣接件3402的二個端部分別具有鉤狀結構3402h,另一個扣接件3404的二個端部亦分別具有鉤狀結構3404h。所以,扣接件3402的二個鉤狀結構3402h能分別對應鉤扣於另一個扣接件3404的二個鉤狀結構3404h,使二個扣接件3402、3404緊固該二撐開部件32。
請參閱圖7,圖7係本發明扣件34之又一例示意圖。扣件34亦可為雙扣接結構,雙扣接結構包含二扣接件3402、3404,二個扣接件3402、3404分別固定設於該二撐開部件32的該二固定部3204。其中,扣接件3402的二個端部分別具有軸接結構3402a,另一個扣接件3404的二個端部分別具有軸接結構3404a,軸接結構3402a為凸型具有軸孔的結構,軸接結構3404a為凹型具有軸孔的結構,軸接結構3402a與軸接結構3404a能相互配合並以一根軸所貫通連接。所以,扣接件3402的二個軸接結構3402a能分別對應軸接於另一個扣接件3404的二個軸接結構3404a,使二個扣接件3402、3404緊固該二撐開部件32。
圖7例的軸可以是固定的,也可以設計成可以插拔的,此外,圖6例與圖7例,還可以相互混合設計,即扣接件3402、3404的一對應端採鉤狀結構3402h、3404h,另一對應端可採軸接結構3402a、3404a,因而在設計上有多種彈性組成方式。
因此,利用本發明所提供一種骨撐開裝置10,藉由伸縮件撐開撐開部件32,能穩固安全的撐開塌陷的骨或椎體,而可安全產生骨水泥灌注空間,除了能有效防止骨水泥溢漏之外,並能使醫療單位根據椎體塌陷程度,調整所需的椎體重建高度,且可以針對變形脊椎曲線進行角度調整,再者,整個骨撐開裝置10收整起來長度較短,且可以連續無段或多段式的調整支撐高度,並且具有較強的支撐力。
藉由以上較佳具體實施例之詳述,係希望能更加清楚描述本發明之特徵與精神,而並非以上述所揭露的較佳具體實施例來對本發明之範疇加以限制。相反地,其目的是希望能涵蓋各種改變及具相等性的安排於本發明所欲申請之專利範圍的範疇內。
10‧‧‧骨撐開裝置 32‧‧‧撐開部件 3202‧‧‧活動部 3204‧‧‧固定部 3206‧‧‧變形部 3208‧‧‧扣接部 32C‧‧‧導溝 32P‧‧‧平面部 34‧‧‧扣件 3402、3404‧‧‧扣接件 3402h、3404h‧‧‧鉤狀結構 3402a、3404a‧‧‧軸接結構 36‧‧‧螺栓組 3602‧‧‧螺母件 3604‧‧‧螺公件 36H‧‧‧操作軸孔 36S‧‧‧槽孔 36T‧‧‧外端部 46‧‧‧棘齒組 4602‧‧‧母棘齒件 4604‧‧‧公棘齒件 56‧‧‧滑動組 5602‧‧‧母滑套件 5604‧‧‧公滑套件 60‧‧‧滑槽 62‧‧‧滑塊
圖1A 係本發明骨撐開裝置收覆狀態之外觀示意圖; 圖1B 係本發明骨撐開裝置伸展狀態之外觀示意圖; 圖2A 係本發明骨撐開裝置之爆炸示意圖; 圖2B 係本發明骨撐開裝置伸展狀態之側視圖; 圖3A及圖3B 為本發明具有棘齒伸縮件實施例的示意圖; 圖4A及圖4B 為本發明滑動式伸縮件實施例之示意圖; 圖5 係本發明扣件之另一例示意圖; 圖6 係本發明扣件之再一例示意圖;以及 圖7 係本發明扣件之又一例示意圖。
10‧‧‧骨撐開裝置
32‧‧‧撐開部件
3202‧‧‧活動部
3204‧‧‧固定部
3206‧‧‧變形部
34‧‧‧扣件
36‧‧‧螺栓組
3602‧‧‧螺母件
3604‧‧‧螺公件
36H‧‧‧操作軸孔
36S‧‧‧槽孔
36T‧‧‧外端部

Claims (9)

  1. 一種骨撐開裝置,該骨撐開裝置包含:二撐開部件,該二撐開部件能相互結合以形成一腔體,該撐開部件包含二活動部以及一固定部,該撐開部件的中段為該固定部,該撐開部件的兩端為該二活動部,該活動部連接且延伸自該固定部,該活動部係能於連接該固定部的位置彎折;一伸縮件,設置於該腔體中,包含一第一部件以及一第二部件,該第一部件係活動套接於該第二部件,其中移動該第一部件或該第二部件,係能改變該伸縮件的長度,且該第一部件以及該第二部件的側壁分別具有通透的至少一槽孔;以及一扣件,係緊固該二撐開部件的該二固定部;其中,當該伸縮件的長度變長時,該伸縮件的相對二外端部分別抵推該二撐開部件的四個活動部鄰近該腔體之側面,使該四個活動部背向該腔體撐開。
  2. 如申請專利範圍第1項所述之骨撐開裝置,其中該第一部件的內側以及該第二部件的外側係相互對應而分別具有螺紋,該第一部件係套接螺合於該第二部件,其中轉動該第一部件或該第二部件,係能改變該伸縮件的長度。
  3. 如如申請專利範圍第2項所述之骨撐開裝置,其中該第一部件或該第二部件的外端具有一操作軸孔,供外部的一工具件嵌插緊配以轉動該第一部件或該第二部件。
  4. 如申請專利範圍第1項所述之骨撐開裝置,其中該第一部件的內側以及該第二部件的外側係相互對應而分別具有棘齒,其中拉動該第一部件或該第二部件,係能改變該伸縮件的長度。
  5. 如申請專利範圍第1項所述之骨撐開裝置,其中該第一部件具有至少一滑槽,該第二部件具有配合所述至少一滑槽的至少一滑塊,其中拉動該第一部件或該第二部件,係能改變該伸縮件的長度。
  6. 如申請專利範圍第1項所述之骨撐開裝置,其中該活動部鄰近該腔體之側面具有一導溝,該導溝沿該伸縮件伸長的方向延伸,該活動部背向該腔體之側面具有一平面部。
  7. 如申請專利範圍第1項所述之骨撐開裝置,其中該扣件係為至少一C型扣件,利用該C型扣件之彈性力夾持該二固定部。
  8. 如申請專利範圍第1項所述之骨撐開裝置,其中該扣件係為一雙扣接結構,該雙扣接結構包含二扣接件,其中一個該扣接件的至少一端部係對應鉤扣於另一個該扣接件的至少一端部。
  9. 如申請專利範圍第1項所述之骨撐開裝置,其中該扣件係為一雙扣接結構,該雙扣接結構包含二扣接件,其中一個該扣接件的至少一端部係對應軸接於另一個該扣接件的至少一端部。
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