TW202348203A - Connection structure of screw driver and locking screw - Google Patents
Connection structure of screw driver and locking screw Download PDFInfo
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- TW202348203A TW202348203A TW111120358A TW111120358A TW202348203A TW 202348203 A TW202348203 A TW 202348203A TW 111120358 A TW111120358 A TW 111120358A TW 111120358 A TW111120358 A TW 111120358A TW 202348203 A TW202348203 A TW 202348203A
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- 210000000988 bone and bone Anatomy 0.000 claims description 24
- 230000035515 penetration Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 5
- 238000002324 minimally invasive surgery Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010003694 Atrophy Diseases 0.000 description 1
- 208000020307 Spinal disease Diseases 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 231100000862 numbness Toxicity 0.000 description 1
- 210000001032 spinal nerve Anatomy 0.000 description 1
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Abstract
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本發明涉及醫學技術領域,尤指一種適合用於鎖固骨釘之連接桿之鎖固起子與鎖固螺絲之連接結構。The present invention relates to the field of medical technology, and in particular, to a connecting structure of a locking driver and a locking screw suitable for locking a connecting rod of a bone nail.
對於有脊椎病症的患者,很容易在椎間盤產生移位、病變、萎縮等問題,導致脊突間隙縮小而壓迫到脊髓神經,因而使患者於背部產生麻痺或疼痛感。For patients with spinal diseases, problems such as displacement, lesions, and atrophy of the intervertebral discs can easily occur, causing the gap between the spinal processes to shrink and compressing the spinal nerves, causing numbness or pain in the patient's back.
為解決上述問題,目前普遍的治療方式為利用骨釘將連桿植入脊椎的微創手術,利用連桿支撐椎體間的相對距離與位置。In order to solve the above problems, the current common treatment method is minimally invasive surgery that uses bone screws to implant connecting rods into the spine, and uses the connecting rods to support the relative distance and position between the vertebral bodies.
依長度的長短,骨釘可分為「短翼釘」與「長翼釘」,而長翼釘又分為開口式與封閉式兩種。由於微創手術在患者的開口很小且開洞深,若採用短翼釘,必須另設置擴張器將開口擴大,以利於手術操作,因此就實用性與操作便利性而言,開口式長翼型骨釘由於可簡化短翼型骨釘的手術過程,因此是本技術領域人士目前喜愛且普遍使用的一種骨釘。According to the length, bone nails can be divided into "short wing nails" and "long wing nails", and long wing nails are divided into two types: open type and closed type. Since the patient's opening in minimally invasive surgery is very small and the hole is deep, if a short wing nail is used, an additional dilator must be installed to expand the opening to facilitate the surgical operation. Therefore, in terms of practicality and convenience of operation, the open-type long wing nail Because the short wing-shaped bone nail can simplify the surgical process of the short wing-shaped bone nail, it is currently a favorite and commonly used bone nail by people in the art.
針對習知開口式長翼型骨釘之結構,其主要由一定位套與一螺釘構成。定位套包含一體成形之一固定座與一校準套,螺釘螺設於固定座且凸伸於固定座外,於固定座具有內螺紋,校準套供手術時校準之用。將螺釘連同定位套螺入脊椎,置入脊椎連桿,再於固定座內螺合一鎖固螺絲以迫緊脊椎連桿,而後利用工具將校準套折斷並移除。Regarding the structure of the conventional open-type long wing-shaped bone nail, it mainly consists of a positioning sleeve and a screw. The positioning sleeve includes an integrally formed fixing base and a calibration sleeve. The screw is set on the fixing base and protrudes outside the fixing base. The fixing base has internal threads. The calibration sleeve is used for calibration during surgery. Screw the screw together with the positioning sleeve into the spine, insert the spinal connecting rod, screw a locking screw into the fixed base to tighten the spinal connecting rod, and then use a tool to break off the calibration sleeve and remove it.
此外,另可見一種套筒式長翼型骨釘,其主要由一螺釘頭部、一螺釘與一可套設於螺釘頭部外之長筒狀擴張器構成。螺釘螺設於螺釘頭部且凸伸於螺釘頭部外,其形態類似於短翼釘,螺釘頭部與擴張器皆具有內螺紋,擴張器供手術時校準之用。將螺釘連同定位套螺入脊椎,置入脊椎連桿,再將一具有外螺紋之桿狀工具及鎖固螺絲螺入擴張器內,將鎖固螺絲迫緊脊椎連桿,而後將擴張器移除。In addition, there is also a sleeve-type long wing-shaped bone nail, which mainly consists of a screw head, a screw and a long cylindrical expander that can be sleeved outside the screw head. The screw screw is located on the screw head and protrudes outside the screw head. Its shape is similar to a short wing screw. Both the screw head and the dilator have internal threads. The dilator is used for calibration during surgery. Screw the screw together with the positioning sleeve into the spine, insert the spinal connecting rod, then screw a rod-shaped tool with external threads and the locking screw into the dilator, tighten the locking screw on the spinal connecting rod, and then move the dilator remove.
惟,無論上述習知開口式長翼型骨釘或習知套筒式長翼型骨釘,皆存在一主要的缺失,亦即,無法確實得知鎖固起子是否將鎖固螺絲鎖緊,只能憑藉操作者的經驗與感覺,因此常導致兩種情況,未確實將鎖固螺絲鎖緊而無法迫緊脊椎連桿,或者,過度鎖緊而導致鎖固螺絲滑牙,因而必須更換鎖固螺絲或固定座。However, no matter the above-mentioned conventional open-type long wing-shaped bone screws or the conventional sleeve-type long wing-shaped bone screws, there is one major shortcoming, that is, it is impossible to know whether the locking screw is locked by the locking screwdriver. It can only rely on the operator's experience and feeling, which often leads to two situations: the locking screw is not firmly tightened and the spinal connecting rod cannot be tightened, or the locking screw is over-locked and causes the locking screw to slip, so the lock must be replaced. Fasten screws or mounts.
據此,如何發展出一種結構簡單、操作方便、可確實將鎖固螺絲適當地迫緊脊椎連桿且不致對患者的手術開口造成傷害的「鎖固起子與鎖固螺絲之連接結構」,是相關技術領域人士亟待解決之課題。Based on this, how to develop a "connection structure between the locking screwdriver and the locking screw" that is simple in structure, easy to operate, can reliably tighten the locking screw to the spinal connecting rod appropriately without causing damage to the patient's surgical opening, is Issues that people in relevant technical fields urgently need to solve.
於一實施例中,本發明提出一種鎖固起子與鎖固螺絲之連接結構,適合用於鎖固骨釘之連接桿,其包含: 一鎖固起子,沿其軸向具有相對之一第一軸向端部與一第二軸向端部,鎖固起子之第一軸向端部之外側壁具有複數肋條,各肋條之長度方向平行於一第一方向,於鎖固起子之第一軸向端部具有一第一卡合段,第一卡合段平行於第一方向凸伸於複數肋條外,第一卡合段與複數肋條相鄰之一端具有一第一外徑,第一卡合段遠離複數肋條之另一端具有一第二外徑,第二外徑小於第一外徑;以及 一鎖固螺絲,呈環狀,其具有相對之一第三軸向端部與一第四軸向端,鎖固螺絲之中心平行於第一方向具有一貫穿部,於鎖固螺絲之內側壁設有複數凹槽,各凹槽之長度方向平行於第一方向,於鎖固螺絲之外側壁具有第二外螺紋,於貫穿部內靠近鎖固螺絲之第三軸向端部具有一第二卡合段,第二卡合段具有一第一內徑,第一內徑小於第一外徑且大於第二外徑; 其中,鎖固起子之第一軸向端部平行於第一方向***鎖固螺絲之貫穿部中,各肋條卡合於各凹槽間,第一卡合段穿設且卡合於第二卡合段,且第一卡合段凸伸於第三軸向端部外一長度,使鎖固起子與鎖固螺絲形成連接狀態,將連接有鎖固螺絲之鎖固起子置入骨釘,驅動鎖固起子旋轉帶動鎖固螺絲螺合於骨釘內,將連接桿夾合於鎖固螺絲與骨釘之間。 In one embodiment, the present invention proposes a connection structure between a locking screwdriver and a locking screw, suitable for use as a connecting rod for locking bone screws, which includes: A locking screwdriver has an opposite first axial end and a second axial end along its axial direction. The outer side wall of the first axial end of the locking screwdriver has a plurality of ribs, and the length direction of each rib Parallel to a first direction, there is a first engaging section at the first axial end of the locking screwdriver. The first engaging section protrudes outside the plurality of ribs parallel to the first direction. The first engaging section is connected to the plurality of ribs. One adjacent end of the rib has a first outer diameter, and the other end of the first engaging section away from the plurality of ribs has a second outer diameter, and the second outer diameter is smaller than the first outer diameter; and A locking screw is ring-shaped and has an opposite third axial end and a fourth axial end. The center of the locking screw is parallel to the first direction and has a through portion on the inner wall of the locking screw. A plurality of grooves are provided, the length direction of each groove is parallel to the first direction, a second external thread is provided on the side wall outside the locking screw, and a second hook is provided in the through portion close to the third axial end of the locking screw. The second engaging section has a first inner diameter, the first inner diameter is smaller than the first outer diameter and greater than the second outer diameter; Wherein, the first axial end of the locking screwdriver is inserted into the penetration part of the locking screw parallel to the first direction, each rib is engaged between each groove, and the first engaging section is inserted through and engaged with the second engaging section. The first engaging section protrudes beyond the third axial end by a length so that the locking screwdriver and the locking screw are connected. Place the locking screwdriver connected to the locking screw into the bone nail and drive it. The rotation of the locking screwdriver drives the locking screw to be screwed into the bone nail, and the connecting rod is clamped between the locking screw and the bone nail.
請參閱圖1至圖4所示,本發明所提供之一種鎖固起子與鎖固螺絲之連接結構,其包含一鎖固起子60與一鎖固螺絲50。Referring to FIGS. 1 to 4 , the present invention provides a connection structure between a locking screwdriver and a locking screw, which includes a
鎖固起子60沿其軸向具有相對之一第一軸向端部61與一第二軸向端部62。鎖固起子60之第一軸向端部61之外側壁具有複數肋條63。各肋條63之長度方向平行於一第一方向F1。The
於鎖固起子60之第一軸向端部61具有一呈圓軸狀之第一卡合段64。第一卡合段64平行於第一方向F1凸伸於複數肋條63。第一卡合段64與複數肋條63相鄰之一端具有一第一外徑D1,第一卡合段64遠離複數肋條63之另一端具有一第二外徑D2,第二外徑D2小於第一外徑D1。The first
鎖固螺絲50呈環狀,其具有相對之一第三軸向端部53與一第四軸向端54。鎖固螺絲50之中心平行於第一方向F1具有一貫穿部55。The
於鎖固螺絲50之內側壁設有複數凹槽51,各凹槽51之長度方向平行於第一方向F1。於鎖固螺絲50之外側壁具有第二外螺紋52。A plurality of
於貫穿部55內靠近鎖固螺絲50之第三軸向端部53具有一呈圓孔狀之第二卡合段56。第二卡合段56具有一第一內徑D3,第一內徑D3小於第一外徑D1且大於第二外徑D2。There is a second
鎖固起子60平行於第一方向F1***鎖固螺絲50之貫穿部55中,第一軸向端部61凸伸於第三軸向端部53外。各肋條63卡合於各凹槽51間,且由於第一內徑D3小於第一外徑D1且大於第二外徑D2的配合關係,因此第一卡合段64可穿設且卡合於第二卡合段56,且第一卡合段64凸伸於第三軸向端部53外一長度L,使鎖固起子60與鎖固螺絲50形成連接狀態。長度L的尺寸例如介於0.2~0.5毫米之範圍。The
換言之,本發明所提供的鎖固起子60除了可用以螺動鎖固螺絲50之外,由於鎖固起子60與鎖固螺絲50之間具有特殊的第一卡合段64與第二卡合段56設計,因此可使鎖固起子60對鎖固螺絲50發揮抓持的功能,將鎖固起子60平行於第一方向F1***鎖固螺絲50之貫穿部55之後,可藉由鎖固起子60將鎖固螺絲50移動至所需位置,無需另外設置抓持鎖固螺絲50的工具。In other words, the
請參閱圖5至圖7所示,本發明所提供之一種鎖固起子與鎖固螺絲之連接結構,適合用於鎖固骨釘之連接桿40。Referring to FIGS. 5 to 7 , the invention provides a connection structure between a locking driver and a locking screw, which is suitable for use in connecting
圖5顯示之骨釘包含一支撐件10、一螺釘20、一延伸套管30及一連接桿40。The bone nail shown in Figure 5 includes a
連接桿40的長度依實際使用需要而定,圖1僅示意顯示部分長度。通常,連接桿40之長度應足夠搭接兩相鄰之骨釘套件100。The length of the connecting
支撐件10由一底部11與二翼片12構成。各翼片12之內側壁設有第一內螺紋14。各翼片12平行於第一方向F1具有一固定片121與一折斷片122,固定片121與底部11連接,折斷片122與固定片121之連接處形成一溝槽123。第一內螺紋14之範圍涵蓋固定片121之內側壁與折斷片122之內側壁。底部11與二翼片12之間形成一凹部16。The
螺釘20具有一螺紋部21。螺釘20樞設於底部11。螺紋部21可於支撐件10之底部11外擺動。The
關於螺釘20與支撐件10之結合方式屬於本發明技術領域人士慣用技術,因此不予贅述。The method of combining the
延伸套管30由一連接片31與二延伸翼片32構成。二延伸翼片32平行於第一方向F1設置於連接片31之兩側。各延伸翼片32之外側壁設有第一外螺紋34。The
延伸套管30之連接片31與二延伸翼片32具有相同之弧度,使延伸套管30形成一圓筒狀結構。延伸翼片32之外側壁之第一外螺紋34設置於延伸翼片32靠近連接片31之一端。The connecting
延伸套管30平行於第一方向F1套設於支撐件10之二翼片12外。於將延伸套管30套設於支撐件10之前,可將連接桿40以其軸向垂直於第一方向F1之方式設置於二翼片12之間。The
而後,將已相互連接之鎖固起子60與鎖固螺絲50置入延伸套管30。如前所述,本發明所提供的鎖固起子60不僅可螺動鎖固螺絲50,也能對鎖固螺絲50發揮抓持的功能,可藉由鎖固起子60將鎖固螺絲50移動至所需位置,無需另外設置抓持鎖固螺絲50的工具。Then, the connected locking
而後,驅動鎖固起子60旋轉帶動鎖固螺絲50轉動,使第二外螺紋52與第一內螺紋14相螺合,將連接桿40夾合於鎖固螺絲50與骨釘之底部11之間。Then, the locking
請參閱圖7所示,說明本發明所提供之鎖固起子與鎖固螺絲之連接結構之工作原理。當轉動鎖固起子60使第二外螺紋52與第一內螺紋14相螺合時,可將鎖固螺絲50平行於第一方向F1向下螺入。當鎖固螺絲50持續向下移動至使第一軸向端部61接觸連接桿40並將連接桿40迫緊於第一軸向端部61與凹部16間時,若持續轉動鎖固起子60,可使鎖固螺絲50持續向下螺入,但由於第一軸向端部61被連接桿40擋住無法再向下活動,因此會被反推向上,如此即可使第一卡合段64脫離第二卡合段56 。Please refer to FIG. 7 to illustrate the working principle of the connection structure between the locking driver and the locking screw provided by the present invention. When the locking
此外,當鎖固螺絲50被鎖固起子60帶動至迫緊於連接桿40之後,由於鎖固起子60會被連接桿40推離,因此可確保鎖固螺絲50確實迫緊於連接桿40,不致發生未確實將鎖固螺絲50鎖緊而無法迫緊連接桿40,或者,因鎖固起子60過度鎖緊而導致鎖固螺絲50滑牙的情況發生。In addition, when the locking
請參閱圖8所示,說明如何利用延伸套管脫出器70將延伸套管30取出以及鎖固起子60所提供的其他功能。Please refer to FIG. 8 for an explanation of how to use the
延伸套管脫出器70由一套筒71與一把手72構成。把手72呈圓桿狀,把手72之軸向與套筒71之軸向相互垂直。The
套筒71之兩軸向端分別具有一透空部711與一內凹部712。把手72設置於套筒71具有內凹部712之軸向端。套筒71之內側壁具有第二內螺紋713。將套筒71套設於延伸套管30外,旋轉把手72(亦即旋轉套筒71),可使第二內螺紋713與第一外螺紋34相螺合。Two axial ends of the
請參閱圖9至圖12所示,將延伸套管脫出器70套設於延伸套管30外,旋轉把手72(亦即旋轉套筒71),使第二內螺紋713與第一外螺紋34的螺合,延伸套管脫出器70平行於第一方向F1下移,可使鎖固起子60之第二軸向端部62抵制於內凹部712。Referring to Figures 9 to 12, the
此時,持續旋轉把手72(亦即旋轉套筒71),由於延伸套管脫出器70被鎖固起子60抵制無法繼續下降,而延伸套管30與支撐件10之間則是以鳩尾槽33與鳩尾座15沿第一方向F1相互可分離地卡合,因此可藉由第二內螺紋713與第一外螺紋34持續咬合,由延伸套管脫出器70將延伸套管30平行於第一方向F1向上拉,最終可使延伸套管30與支撐件10之二翼片12脫離,如圖12所示。At this time, continue to rotate the handle 72 (that is, rotate the sleeve 71), because the
必須說明的是,鳩尾座15與鳩尾槽33僅作為本案延伸翼片32內側壁與翼片12外側壁相互卡合之一種卡合結構實施例。於圖12顯示將鳩尾座15設置於翼片12外側壁,將鳩尾槽33設置於延伸翼片32內側壁,除此之外,可將鳩尾槽33與鳩尾座15對調,亦即,將鳩尾槽33設置於翼片12外側壁,將鳩尾座15設置於延伸翼片32內側壁,亦可達成相同的卡合功效。更進一步地,延伸翼片32內側壁與翼片12外側壁之間設置相對應的凹凸卡合結構即可,例如,一為凹槽、一為凸條,或者,一為凹洞、一為凸點;且數量不限一組。It must be noted that the
而後即可進行後續的手術步驟,包括,將鎖固起子60取出、將翼片12的折斷片122於溝槽123處折斷,等等。Then, subsequent surgical steps can be performed, including taking out the locking
綜上所述,本發明所提供之鎖固起子與鎖固螺絲之連接結構,適合用於鎖固骨釘之連接桿,本發明所提供的鎖固起子除了可用以螺動鎖固螺絲之外,由於鎖固起子與鎖固螺絲之間具有特殊的第一卡合段與第二卡合段設計,當鎖固螺絲被鎖固起子帶動至迫緊於連接桿之後,由於鎖固起子會被連接桿推離,因此可確保鎖固螺絲確實迫緊於連接桿,不致發生未確實將鎖固螺絲鎖緊而無法迫緊連接桿,或者,因鎖固起子過度鎖緊而導致鎖固螺絲滑牙的情況發生。此外,由於鎖固起子與鎖固螺絲之間具有特殊的第一卡合段與第二卡合段設計,因此可使鎖固起子對鎖固螺絲發揮抓持功能,可藉由鎖固起子將鎖固螺絲移動至所需位置,無需另外設置抓持鎖固螺絲的工具。In summary, the connection structure between the locking screwdriver and the locking screw provided by the present invention is suitable for use as a connecting rod for locking bone screws. The locking screwdriver provided by the present invention can be used in addition to screwing the locking screw. , due to the special first and second engagement section designs between the locking screwdriver and the locking screw, when the locking screw is driven by the locking screwdriver to be tight against the connecting rod, the locking screwdriver will be The connecting rod is pushed away, thus ensuring that the locking screw is indeed tightened on the connecting rod. This avoids the possibility that the locking screw is not firmly tightened and the connecting rod cannot be tightened, or that the locking screw slips due to excessive tightening of the locking screwdriver. tooth condition occurs. In addition, due to the special first and second engagement section designs between the locking screwdriver and the locking screw, the locking screwdriver can exert a gripping function on the locking screw, and the locking screwdriver can be used to hold the locking screw. The locking screw moves to the desired position without the need for additional tools to hold the locking screw.
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明的精神和範圍內,當可作些許的更動與潤飾,故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.
10:支撐件 11:底部 12:二翼片 121:固定片 122:折斷片 123:溝槽 13:孔洞 14:第一內螺紋 15:鳩尾座 16:凹部 20:螺釘 21:螺紋部 30:延伸套管 31:連接片 32:延伸翼片 33:鳩尾槽 34:第一外螺紋 40:連接桿 50:鎖固螺絲 51:凹槽 52:第二外螺紋 53:第三軸向端部 54:第四軸向端 55:貫穿部 56:第二卡合段 60:鎖固起子 61:第一軸向端部 62:第二軸向端部 63:肋條 64:第一卡合段 70:延伸套管脫出器 71:套筒 711:透空部 712:內凹部 713:第二內螺紋 72:把手 D1:第一外徑 D2:第二外徑 D3:第一內徑 F1:第一方向 L:長度 10:Support 11: Bottom 12: Two wing pieces 121: Fixed piece 122: broken piece 123:Trench 13:hole 14: First internal thread 15: Dovetail 16: concave part 20:Screw 21:Thread part 30:Extension sleeve 31: Connecting piece 32:Extended wings 33:Dove tail groove 34: First external thread 40:Connecting rod 50: Locking screw 51: Groove 52: Second external thread 53:Third axial end 54:Fourth axial end 55:Penetration Department 56: The second engagement section 60: Locking screwdriver 61: First axial end 62: Second axial end 63:ribs 64: The first engagement section 70:Extended casing extractor 71:Sleeve 711: Hollow part 712: Inner concave part 713: Second internal thread 72: handle D1: first outer diameter D2: second outer diameter D3: first inner diameter F1: first direction L: length
圖1為本發明之一實施例之組合立體結構示意圖。 圖2為本發明之鎖固螺絲與部分鎖固起子之放大分解結構示意圖。 圖3為本發明之鎖固螺絲與部分鎖固起子之軸向剖面放大分解結構示意圖。 圖4為本發明之鎖固螺絲與部分鎖固起子之軸向剖面放大組合結構示意圖。 圖5為本發明之支撐件、螺釘、延伸套管相互搭配之組合結構示意圖。 圖6為本發明之鎖固螺絲與鎖固起子置入延伸套管與支撐件中之結構示意圖。 圖7為本發明之鎖固螺絲與鎖固起子置入延伸套管與支撐件中且第一軸向端部頂抵於連接桿之軸向剖面放大組合結構示意圖。 圖8為本發明之延伸套管脫出器與延伸套管相互套合之結構示意圖。 圖9為本發明旋轉延伸套管脫出器之結構示意圖。 圖10為本發明之延伸套管脫出器、鎖固起子、延伸套管之組合結構部分剖視結構示意圖。 圖11A為圖10之A部大結構示意圖。 圖11B為圖10之B部大結構示意圖。 圖12為本發明之延伸套管脫出器將延伸套管與支撐件分離之結構示意圖。 Figure 1 is a schematic diagram of the assembled three-dimensional structure of one embodiment of the present invention. Figure 2 is an enlarged and exploded structural diagram of the locking screw and part of the locking driver of the present invention. Figure 3 is an enlarged and exploded schematic diagram of the axial cross-section of the locking screw and part of the locking driver of the present invention. Figure 4 is an enlarged axial cross-sectional structural diagram of the locking screw and part of the locking driver of the present invention. Figure 5 is a schematic diagram of the combined structure of the support, screws, and extension sleeves of the present invention. Figure 6 is a schematic structural diagram of the locking screw and locking driver of the present invention being inserted into the extension sleeve and the support member. 7 is a schematic diagram of an enlarged axial cross-sectional assembly structure of the locking screw and locking driver of the present invention, which are inserted into the extension sleeve and the support member, and the first axial end is pressed against the connecting rod. Figure 8 is a schematic structural diagram of the extension sleeve extractor and the extension sleeve of the present invention being fitted into each other. Figure 9 is a schematic structural diagram of the rotary extension casing extractor of the present invention. Figure 10 is a partial cross-sectional structural schematic diagram of the combined structure of the extension sleeve extractor, locking driver, and extension sleeve according to the present invention. FIG. 11A is a schematic diagram of the large structure of part A in FIG. 10 . FIG. 11B is a schematic diagram of the large structure of part B in FIG. 10 . Figure 12 is a schematic structural diagram of the extension sleeve extractor of the present invention separating the extension sleeve and the support member.
50:鎖固螺絲 50: Locking screw
51:凹槽 51: Groove
52:第二外螺紋 52: Second external thread
53:第三軸向端部 53:Third axial end
54:第四軸向端 54:Fourth axial end
55:貫穿部 55:Penetration Department
56:第二卡合段 56: The second engagement section
60:鎖固起子 60: Locking screwdriver
61:第一軸向端部 61: First axial end
63:肋條 63:ribs
64:第一卡合段 64: The first engagement section
D1:第一外徑 D1: first outer diameter
D2:第二外徑 D2: second outer diameter
D3:第一內徑 D3: first inner diameter
F1:第一方向 F1: first direction
Claims (9)
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TW111120358A TWI802430B (en) | 2022-06-01 | 2022-06-01 | Connection structure of screw driver and locking screw |
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TWI802430B TWI802430B (en) | 2023-05-11 |
TW202348203A true TW202348203A (en) | 2023-12-16 |
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US20050215998A1 (en) * | 2001-11-22 | 2005-09-29 | Raoul Donath | Device for joining a longitudinal support with a bone fixation means |
TWI452993B (en) * | 2011-11-17 | 2014-09-21 | Metal Ind Res & Dev Ct | Bone screw, method for manufacturing the bone screw, and tool for mounting and removing the bone screw |
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