200940035 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種用於植牙螺釘之萬用型反角起子。此 元件可主要用於補牙機頭領域中用於擰緊及擰開該等螺 針0 【先前技術】 - 通常將牙科領域中使用之修復器件之支撐件擰入。在植 牙技術中，螺釘驅動鑽頭具有一類似於根據IS〇 1797 1之 〇 類型1牙科用圓頭銼之柄之標準端，表徵每一製造商特有 之螺釘凹口之另一端。在下文中稱為螺釘驅動鑽頭之柄之 螺釘驅動鑽頭之標準化的部分與一由行醫者用手進行操作 之起子之夾盤合作。 目前，使用此等起子擰緊及擰開螺釘之操作頗棘手，此 乃因以下事實：該起子位於螺釘驅動鑽頭之延續部分中， 由於該工具佔據大量空間’從而降低行醫者之可見性故 減植人物在患者口巾之可觸及性，裝配及㈣擰入的植 P 入物頗為複雜。 因而，待解決之第一問題係藉由提高對處於一有限空間 +之螺釘驅動鑽頭之可觸及性來使得較易於擰緊及摔植入 標針β 待解決之第一問題係與螺釘驅動鑽頭係每一製造商特有 事實相關聯，因此需要每一植入物製造商特有之器械， 特別就螺釘的頭且因此起子之螺釘驅動鑽頭而言。理想 也該起子需要能夠裝配至每-類型之設備。 129961.doc 200940035 由於擰入植牙螺釘必須根據每一製造商特有之資料進 行，一第三問題係可用一包含關於施加至螺釘之上緊扭矩 之安全特徵之工具。牙科領域中用於此操作之各件設備 (除扭矩扳手之外）皆不准許此控制。 植牙技術中使用之工具可消毒且較佳可拆卸（以易於清 潔）以遵守衛生慣例絕對重要。此要求亦提出一額外問 • 題。 【發明内容】 ❹因而，本發明之一目標係藉由提出一可裝配至所有製造 商之起子之反角來解決該等主要困難。 本發明係關於一種用於摔緊及擰開植牙螺釘之機械化器 件，該機械化器件可藉由一端裝配到一手柄上且藉由另一 端裝配到一螺釘驅動鑽頭之柄上，該器件特徵在於其具 有： -一掛夾式有齒小齒輪，其強制裝配至該柄上， 一工具’其大致以直角定位至該柄，從而允許在該手柄 内所納含之一傳動心軸與該小齒輪之間傳送旋轉，且能夠 與小齒輪嚙合並能夠驅動該螺釘驅動鑽頭。 該根據本發明用於擰緊及擰開植牙螺釘之機械化器件之 優點有許多： -該小型反角n件允許行醫者在具有良好的可觸及性及滿 意的可見性之最適宜之條件下工作。 -該等小齒輪可裝配至所有標準化的起子柄上，此意味著 可使用每一製造商特有之所有螺釘驅動鑽頭並可、=合習 129961.doc 200940035 用牙科設備使用根據本發明之整個器件。 -該器件可藉由選擇一適於最大准許之上緊扭矩之小齒輪 來預上緊螺釘，而不到達由植入物製造商所設定之極 限。在到達上緊扭矩時，該小齒輪在螺釘驅動鑽頭上滑 動，而不繼續向螺釘施加負載。此機敏的上緊扭矩控制 方式構成一可感知之安全特徵。 • _根據期望之上緊扭矩可製成許多小齒輪，且該等小齒輪 與此領域中習用之零件之成本相比較頗便宜且因此行 〇 醫者無需系統地利用新設備即可在不同情形下且對於不 同製造商之植入物使用一件及同一件設備。 -與小齒輪組合使用之工具經設計以藉由將該工具翻轉過 180°而在兩個相反方向上操作，從而允許顛倒小齒輪之 轉動方向，且因而使得可僅藉由翻轉該工具來擰緊或擰 開。 -在驅動用於清潔及消毒操作之連接之情形下，附裝至螺 釘驅動鑽頭之小齒輪可移除且該工具可自其支撐件拆 ❹除。 【實施方式】 用於擰緊及擰開植牙螺釘之機械化器件可藉由一端裝配 到一手柄上且藉由另一端裝配到一螺釘驅動鑽頭之柄上。 圖1及2中之剖面中在可在柄丨上採用工具2之兩個可能的組 態中描繪一諸如此之器件。柄1係一構成螺釘驅動鑽頭之 本體之經校準之圓柱形零件。 圖1顯示柄1插入工具2之頭部本體9中，因而工具2大致 129961.doc 200940035 以直角定位至由柄！表示之螺釘驅動鑽頭i7並延續手柄3。 柄！包括-可掛夹至其周邊之有齒小齒輪〇小齒輪4連 接至-齒輪7,該齒輪允許旋轉將自手柄3傳送至螺釘驅動 鑽頭17。 更具體而言，手柄3納含一藉助一馬達轉動之驅動機構 5，其中馬達應理解為意指能夠轉動驅動機構^任一系 * 統。轉動能量傳送至-與驅動機構直接相咬合之線性轴 6。轴6在相反端處（亦即在工具之頭部本體9之内侧上）終止 〇 纟—經由一系統已知傳動系統向小齒輪4傳送旋轉運動之 齒輪7中。 在齒輪7定位於其端時，轴6圍繞軸線16轉動。 由納含齒輪7及軸6之頭部本體9形成之組件插入一向各 種元件給予保護之殼22，並藉助該殼固持在適當位置。較 佳地，該殼22係由剛性塑膠製成並推入裝配至手柄3中。 能夠傳送旋轉之工具2在其在頭部本體9上之一端處具有 一能夠允許該工具2推至小齒輪4上之開口 8(圖3中可見')， •S·在相反端處包括與連接至一馬達之驅動器連接之構件。 該工具2大致以直角定位至螺釘驅動鑽頭如各個圖中所 . 圖解說明。 • 圖1顯示定位於小齒輪4上方之齒輪7，在給定馬達之轉 動方向之情形下，其定位致使驅動鑽頭沿順時針方向轉 動’且因而上緊一螺釘。 在圖2中，工具2已翻轉過180。且以與以前相同的方式在 柄1上嚙合，且在此組態中，齒輪7定位於小齒輪4之下並 129961.doc -9- 200940035200940035 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD The present invention relates to a universal type angle screwdriver for a dental implant screw. This component can be used primarily in the field of filling heads for tightening and unscrewing the needles. 0 [Prior Art] - The support of the prosthetic device used in the dental field is usually screwed in. In the dental implant technique, the screw-driven drill bit has a standard end similar to that of the 圆 type 1 dental round head 〇 according to IS 〇 1797 1 and characterizes the other end of each manufacturer-specific screw notch. The standardized portion of the screw-driven drill bit, hereinafter referred to as the shank of the screw-driven drill bit, cooperates with a chuck that is operated by the practitioner by hand. At present, the use of such screwdrivers to tighten and unscrew the screws is tricky due to the fact that the screwdriver is located in the continuation of the screw-driven drill bit, and because the tool occupies a large amount of space, thereby reducing the visibility of the practitioner, the planting is reduced. The accessibility of the character in the patient's mouth, assembly and (4) screwing in the implant is quite complicated. Therefore, the first problem to be solved is to make it easier to tighten and drop the implanted needle β by improving the accessibility of the screw-driven drill bit in a limited space +. The first problem to be solved is the screw-driven drill bit system. Each manufacturer's unique fact is associated with each other and therefore requires a device unique to each implant manufacturer, particularly with regard to the head of the screw and thus the screw drive bit of the screwdriver. Ideally, the screwdriver needs to be able to be assembled to every type of device. 129961.doc 200940035 Since screwing in the implant screws must be done according to each manufacturer's specific information, a third problem is to use a tool that contains safety features regarding the tightening torque applied to the screws. This control is not permitted for all pieces of equipment used in this field in the dental field (except for torque wrenches). It is absolutely important that the tools used in implant technology are sterilizable and preferably detachable (to be easy to clean) to comply with hygienic practices. This request also raises an additional question. SUMMARY OF THE INVENTION Accordingly, one object of the present invention is to address these major difficulties by proposing a contralateral angle that can be assembled to the drivers of all manufacturers. BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a mechanized device for breaking and unscrewing a dental implant. The mechanized device can be assembled on a handle by one end and assembled to a screw drive handle of the drill bit by the other end. It has: - a clip-on toothed pinion that is forcibly fitted to the handle, a tool 'which is positioned substantially at right angles to the handle, thereby allowing one of the drive spindles contained within the handle to be small Rotation between the gears is transmitted and can be engaged with the pinion and can drive the screw to drive the drill bit. The advantages of the mechanized device for tightening and unscrewing the dental implant screw according to the invention are numerous: - the small contra-angle n-piece allows the practitioner to work under optimum conditions with good accessibility and satisfactory visibility . - These pinions can be assembled to all standardized driver handles, which means that all screws specific to each manufacturer can be used to drive the drill bit and can be used. 129961.doc 200940035 The entire device according to the invention is used with dental equipment. . - The device can pre-tighten the screw by selecting a pinion gear that is adapted to the maximum allowable tightening torque without reaching the limits set by the implant manufacturer. When the tightening torque is reached, the pinion slides on the screw drive bit without continuing to apply a load to the screw. This savvy tightening torque control constitutes a perceptible safety feature. • _ Many pinions can be made according to the desired tightening torque, and these pinions are relatively cheap compared to the cost of the parts used in this field and therefore the practitioner does not need to systematically utilize the new equipment in different situations. One and the same piece of equipment is used for implants from different manufacturers. - the tool used in combination with the pinion is designed to operate in two opposite directions by flipping the tool over 180°, thereby allowing the direction of rotation of the pinion to be reversed, and thus making it possible to tighten only by flipping the tool Or unscrew. - In the case of driving a connection for cleaning and disinfecting operations, the pinion attached to the screw drive bit can be removed and the tool can be removed from its support. [Embodiment] A mechanized device for tightening and unscrewing a dental implant screw can be assembled from one end to a handle and the other end to a screw to drive the handle of the drill bit. In the section of Figures 1 and 2, a device such as this is depicted in two possible configurations in which the tool 2 can be employed on the shank. The shank 1 is a calibrated cylindrical part that forms the body of the screw drive drill. Figure 1 shows the handle 1 inserted into the head body 9 of the tool 2, so that the tool 2 is approximately 129961.doc 200940035 positioned at right angles to the handle! The indicated screw drives the drill bit i7 and continues the handle 3. handle! The toothed pinion pinion 4, which can be clamped to its periphery, is coupled to a gear 7, which allows rotation to be transmitted from the handle 3 to the screw drive bit 17. More specifically, the handle 3 includes a drive mechanism 5 that is rotated by a motor, wherein the motor is understood to mean that the drive mechanism can be rotated. The rotational energy is transmitted to a linear shaft 6 that directly engages the drive mechanism. The shaft 6 terminates at the opposite end (i.e., on the inside of the head body 9 of the tool) - a gear 7 that transmits rotational motion to the pinion 4 via a known transmission system of the system. When the gear 7 is positioned at its end, the shaft 6 rotates about the axis 16. The assembly formed by the nap gear 7 and the head body 9 of the shaft 6 is inserted into a housing 22 which is protected by various components and held in place by means of the housing. Preferably, the casing 22 is made of a rigid plastic and is pushed into the handle 3. The tool 2 capable of transmitting rotation has an opening 8 (visible in FIG. 3) capable of allowing the tool 2 to be pushed onto the pinion 4 at one end of the head body 9, • S· including at the opposite end A member that is connected to a drive of a motor. The tool 2 is positioned at approximately a right angle to the screw drive bit as illustrated in the various figures. • Figure 1 shows a gear 7 positioned above the pinion 4, the positioning of which causes the drive bit to rotate in a clockwise direction and thus tighten a screw, given the direction of rotation of the motor. In Figure 2, tool 2 has been flipped over 180. And meshing on the handle 1 in the same manner as before, and in this configuration, the gear 7 is positioned below the pinion 4 and 129961.doc -9- 200940035
沿逆時斜t A a I 叮矸万向向驅動鑽頭傳送一旋轉運動，因此允許擰開 一螺釘。 m || ’將工具2翻轉過180。且因而以第二可能的方式將 其附裝至小齒輪4及柄1使得可能改變螺釘驅動鑽頭之轉動 方向。 根據本發明，工具2可以各種已知方式嚙合或推入裝配 至手柄3上’例如藉由螺釘緊固。A rotational motion is transmitted along the counter-clockwise t A a I 叮矸 directional drive drill bit, thus allowing a screw to be unscrewed. m || ‘Turn tool 2 over 180. And thus attaching it to the pinion 4 and the shank 1 in a second possible manner makes it possible to change the direction of rotation of the screw-driven drill bit. According to the invention, the tool 2 can be engaged or pushed into the handle 3 in various known ways, e.g. by means of a screw.
圖3顯示工具2之俯視圖，且更特定而言，顯示允許該工 具2正向地喷合於螺釘驅動鑽頭之柄1上之開口 8。此圖僅 顯示小齒輪4之一部分。 該工具之頭部本體9中產生之開口 8係以一在一腔u中終 止之槽10之形式。槽10具有一小於柄丨之直徑之寬度以使 螺釘驅動鑽頭必須藉助力穿透，從而分開該頭部本體之橫 向部分12並在腔11中保持楔形。 在嚙合之後，螺釘驅動鑽頭之柄以允許其將經由引自馬 達之驅動線轉動之此一方式抓緊於該工具中。柄i，且因 而驅動鑽頭可在腔11中自由地轉動，該腔具有將該螺釘驅 動鑽頭固持在適當位置之角色。 為防止破壞工具之頭部本體9並在嚙合螺釘驅動鑽頭時 提供必要的彈性，亦有利地提供另一槽13及一用於分配應 力之開放圓柱14。製成該頭部本體之材料必須實際上具有 滿意的機械及彈性性質’以允許嚙合及脫離螺釘驅動鑽頭 之許多操作。 圖4顯示在與圖1之描繪相同的組態中處於工作定位之組 129961.doc -10- 200940035 件之側視圖，此视圖特 以允許在該工具正向地&人石顯不一形成於頭部本艘9中 向地唾合於柄1上時插入小齒輪4之空間 1 D ° 在完成該喷合時，, 八0决自&、查+ 小齒輪4如圖1中所描繪與齒輪7相咬 合且來自馬達之旋轉可 入螺釘。 螺釘驅動鑽頭並接著到達植 . 如圖1及2中所圖解說明，々 Λ 面輪7包括一有利地沿工且2之 軸線16定位之旋轉軸線且 八之 ❹ 齒輪在小齒輪4上方或下方之 定位確定該螺釘驅動 小齒輪4以將螺針μ私 釘驅動鑽仙定至該小齒輪並允許將傳 送旋轉之此一方式可掛夾至柄丨上。 存在許多關於小齒給 w輪4之内部組態及其怎樣附裝至柄i之 選擇。圖5中圖解說明該等選擇中之某些。 ❹ 更具體而言，在此圖5中’圖解說明—具有-固定至Μ 之小齒輪4之螺釘驅動鑽頭17，且以剖面圖及俯視圖描繪 參考為4a至4g之數個小齒輪以顯示各種替代組態選擇。 各種小齒輪4a至4g具右X 151 rin Arr* g丹有不冋的内部配置，以便此部件可 以各種穩固角度固定至杯1。久接Μ 又口疋主柄1。各種附裝穩固角度允許調節 施加至螺釘之最大容忍之上緊扭矩。 具體而言，若未極穩固地固定小齒輪，則將在—低力處 獲得對應於該小齒輪開始在柄上滑動處之點之最大上緊扭 矩，然而若更穩固地附裝小齒輪，則將能夠更緊地上緊螺 釘。 因此，小齒輪4附裝至螺釘上緊鑽頭17之柄丨之方式確定 129961.doc 200940035 螺釘可上緊至其之扭矩。根據本發明，小齒輪 内部配 置及形成該内部配置之材料使得可能調節螺釘 „ J上緊至其 之最大扭矩。 在本發明之上下文内可設想數個内部配置 夏及許多其他選 擇；舉例而言，如圖5中所圖解說明，可想像—具有—平 面18之小齒輪4a，一具有一藉助彈性壓力固持之槽^之^ 齒輪4b，一具有徑向切口2〇之小齒輪乜，— 丹W —内部密 〇Figure 3 shows a top view of the tool 2 and, more particularly, an opening 8 that allows the tool 2 to be sprayed positively onto the shank 1 of the screw drive drill bit. This figure shows only one part of the pinion 4. The opening 8 created in the head body 9 of the tool is in the form of a slot 10 that terminates in a cavity u. The slot 10 has a width that is smaller than the diameter of the shank so that the screw drive bit must be penetrated by force to separate the lateral portion 12 of the head body and maintain a wedge shape in the cavity 11. After engagement, the screw drives the handle of the drill bit to allow it to be grasped into the tool by way of rotation from the drive line of the motor. The shank i, and thus the drive bit, is free to rotate in the cavity 11, which has the role of holding the screw to hold the drill bit in place. In order to prevent damage to the head body 9 of the tool and to provide the necessary resilience when the engaging screw drives the drill bit, it is also advantageous to provide another groove 13 and an open cylinder 14 for distributing the stress. The material from which the head body is made must actually have satisfactory mechanical and elastic properties to allow for many operations to engage and disengage the screw drive bit. Figure 4 shows a side view of the group 129961.doc -10- 200940035 in working position in the same configuration as the one depicted in Figure 1, this view is specially designed to allow the tool to be positively & Formed in the head of the ship 9 when the ground is sprinkled on the handle 1 when the space of the pinion 4 is inserted 1 D ° When the spray is completed, 80 is determined from &, check + pinion 4 as shown in Figure 1 The depiction engages with the gear 7 and the rotation from the motor can be screwed into the screw. The screw drives the drill bit and then reaches the implant. As illustrated in Figures 1 and 2, the face wheel 7 includes an axis of rotation that is advantageously positioned along the axis 16 of the work and 2 and the pinion gear is above or below the pinion 4 The positioning determines that the screw drives the pinion 4 to drive the screw to the pinion and allows the transfer rotation to be clamped to the handle. There are many options for the internal configuration of the small tooth w-wheel 4 and how it is attached to the handle i. Some of these options are illustrated in FIG. ❹ More specifically, in Fig. 5, 'illustrated' has a screw-driven drill bit 17 with a pinion 4 fixed to Μ, and several pinions with reference to 4a to 4g are depicted in cross-section and top view to show various Alternative configuration options. The various pinions 4a to 4g have a proper internal configuration of the right X 151 rin Arr* g Dan so that this part can be fixed to the cup 1 at various stable angles. Long time Μ 疋 mouth 疋 main handle 1. Various attachment angles allow adjustment of the tightening torque applied to the maximum tolerance of the screw. Specifically, if the pinion gear is not firmly fixed, the maximum tightening torque corresponding to the point at which the pinion starts to slide on the shank is obtained at the low force, but if the pinion gear is attached more stably, It will then tighten the screws tighter. Therefore, the pinion 4 is attached to the way the screw tightens the shank of the drill bit 17 to determine the torque to which the screw can be tightened. According to the invention, the internal configuration of the pinion and the material forming the internal configuration make it possible to adjust the maximum torque to which the screw „J is tightened. Several internal configurations and many other options are conceivable within the context of the present invention; for example As illustrated in Fig. 5, it is conceivable to have a pinion 4a having a plane 18, a gear 4b having a groove held by elastic pressure, a pinion gear having a radial slit 2, - Dan W — internal secret
封件21之小齒輪牝，一具有局部收縮之小齒輪钓，—具有 徑向切口及凹口之小齒輪4f或一具有偏置切口之小齒輪 4g。 用作内部配置之材料在極限最大上緊扭矩方面起重要作 用，且故一塑膠或金屬性材料（一橡膠或一聚矽氧密封件） 將不相對於螺釘驅動鑽頭與小齒輪之間之摩擦及附裝以相 同方式表現。 期望小齒輪具有-相對於旋轉軸線對稱之内部配置以 使不變形之内部零件引導螺釘驅動鑽頭與頭部本體9之腔 11合作。 該等小齒輪可被夾住、強制地推入裝配至螺釘驅動鑽頭 之柄上且該工具在柄加上小齒輪組件中喷合即使該等各 元件在使用週期期間可移除且因而可拆卸以清潔及消 毒。同樣地，工具2可自手柄3分離。 有利地根據本發明，該等小齒輪（以其各種形式）可直 接配置於驅_頭上’且特定而言於其柄上，雖然在本發 明之上下文中設想各種其他設置。 129961.doc •12- 200940035 舉例而言，圖6顯示一螺釘驅動鑽頭可滑動或擰入至其 中之圓筒23’在此圖中尚未描繪該驅動鑽頭。該圓筒經設 計以納含驅動鑽頭之柄。 圖7圖解說明圓筒23用於支撐一小齒輪24之事實，該小 齒輪包括（例如）十個齒且以與先前實例中相同之方式裝配 至該圓筒之圓柱之周邊。該小齒輪24可沿圓筒23軸線向滑 ' 動。 此系統對於調節可傳送至植入螺釘之最大扭矩之可能性 ❹ 具有益處。具體而s，圓请23具有兩個凸耳25 ，凸耳25 可關閉在一起以變化在到達最大上緊扭矩時致使小齒輪24 圍繞其旋轉轴線26滑動所需之力之極限。 可想像其他配置，例如使用一穩固地安裝於一推入至螺 釘驅動鑽頭之柄上之圓柱形部件上之小齒輪，此並不背離 本發明之範疇。一諸如此之單片部件可經設計以具有用於 將其固持於螺釘驅動鑽頭上之附裝構件及各種用於控制一 旦超過就會使小齒輪在驅動鑽頭上滑動而不驅動該小齒輪 罾之極限力之器件。 根據此最後替代選擇，小齒輪穩固地定位於一可藉助夾 · 住來固持於螺釘驅動鑽頭之柄1上之適當位置之圓柱形部 件上且此單片部件可具有一與螺釘驅動鑽頭之柄之形狀合 作之結構。 用於擰緊及擰開植牙螺釘之器件存在各種可能的選擇， 且特定而言，該器件可在其他具有一標準化的柄之以旋轉 方式驅動之牙科工具或設備上使用，此並不背離本發明之 129961.doc -13· 200940035 範疇。 該工具主要被正向地加載至小齒輪上，雖然在本發明之 上下文内不存在防止橫向加載之任何事物，該工具之頭部 本體將可以各種方式進行組態。 旋轉經由齒輪與小齒輪系統在工具與螺釘驅動鑽頭之間 傳送，雖然存在達成相同目的的其他已知方法；例如可 . 使用一不同的傳動裝置且可使用其他用於轉移此點處之旋 轉能之構件。 © 1成該小齒輪及該工具之材料可廣泛地變化，只要其滿 足可靠性、彈性要求，且更一般而言在使用該器件時遇到 的要求即可。有利地，可使用塑膠，例如可使用。 另外，可構想各種用於移除小齒輪並抽出小齒輪/螺釘 驅動鑽頭組件中之工具之構件及各件設備，此並不背離本 發明之範_。 當然，本發明並不限於以實例方式描述及描繪之實施 例’且亦囊括所有技術等效物及其組合。 ® 【圖式簡單說明】 自以上描述參照隨附圖式將顯露本發明之其他特徵及優 · 點，該等圖式僅以非限制性實例之方式給出。 • 圖1係根據本發明之具有相對於彼此定位之小齒輪及工 具之用於擰緊之器件之剖視圖。 圖2係根據本發明之具有相對於彼此定位之小齒輪及工 具之用於擰開操作之器件之剖視圖。 圖3顯示配置於螺釘驅動鑽頭上之工具之俯視圖。 12996l.d〇c • 14· 200940035 圖4圖解說明固定至一螺釘驅動鑽頭上之器件之側視 圖。 圖5圖解說明可在根據本發明之器件中使用之小齒輪之 替代形式之剖視圖及俯視圖。 圖6描繪一螺釘驅動鑽頭支撐圓筒之兩個剖視圖。 : 圖7圖解說明一裝備有一十個齒之小齒輪之螺釘驅動鑽 • 頭支撐圓筒之兩個剖視圖。 【主要元件符號說明】 ❹ 1 柄 2 工具 3 手柄 4 小齒輪 5 驅動機構 6 線性轴 7 齒輪 9 頭部本體 ® 16 工具之轴線 17 螺釘驅動鑽頭 - 22 殼 8 開口 10 槽 11 腔 12 橫向部分 13 槽 129961.doc -15- 200940035 開放圓柱 空間 小齒輪 小齒輪 小齒輪 小齒輪 小齒輪 小齒輪 小齒輪 平面 槽 徑向切口 内部密封件 圓筒 小齒輪 14 15 4a 4b 4c : 4d ' 4e 4f ❿ 4g 18 19 20 21 23 24 25 凸耳The pinion 牝 of the seal 21, a pinion having a partial contraction, a pinion 4f having a radial slit and a notch or a pinion 4g having an offset slit. The material used as the internal configuration plays an important role in the ultimate maximum tightening torque, and therefore a plastic or metallic material (a rubber or a polyoxygenated seal) will not rub against the screw drive between the drill bit and the pinion And the attachments perform in the same way. It is desirable for the pinion to have an internal configuration that is symmetrical with respect to the axis of rotation such that the non-deformed inner part guide screw drives the bit to cooperate with the cavity 11 of the head body 9. The pinions can be clamped, forcibly pushed into the shank of the screw drive bit and the tool is sprayed in the shank plus pinion assembly even if the elements are removable and thus detachable during the life cycle For cleaning and disinfection. Likewise, the tool 2 can be separated from the handle 3. Advantageously, according to the invention, the pinions (in their various forms) can be arranged directly on the drive head and in particular on their shank, although various other arrangements are envisaged in the context of the present invention. 129961.doc • 12- 200940035 By way of example, Figure 6 shows a cylinder 23' to which a screw-driven drill bit can be slid or screwed into. The drive drill bit has not been depicted in this figure. The cylinder is designed to contain the handle of the drive bit. Figure 7 illustrates the fact that the cylinder 23 is used to support a pinion 24 comprising, for example, ten teeth and assembled to the periphery of the cylinder of the cylinder in the same manner as in the previous examples. The pinion 24 is slidable along the axis of the cylinder 23. This system has the benefit of adjusting the likelihood of maximum torque that can be delivered to the implant screw. Specifically, s, the circle 23 has two lugs 25 that can be closed together to vary the limit of force required to cause the pinion 24 to slide about its axis of rotation 26 upon reaching the maximum tightening torque. It is conceivable that other configurations, such as the use of a pinion that is securely mounted to a cylindrical member that is pushed onto the shank of the screw drive bit, does not depart from the scope of the present invention. A single piece such as this may be designed to have an attachment member for holding it on a screw drive bit and various controls for controlling the pinion to slide over the drive bit without driving the pinion once it is exceeded. The ultimate force device. According to this last alternative, the pinion is securely positioned on a cylindrical member that can be held in place by the clip to hold on the handle 1 of the screw drive bit and the single piece can have a handle with a screw drive bit The structure of the shape cooperation. There are various possible options for the means for tightening and unscrewing the dental implant screws, and in particular, the device can be used on other dental tools or devices that have a standardized handle for rotational driving, without departing from this Invention 129961.doc -13· 200940035 Category. The tool is primarily loaded positively onto the pinion, although there is no such thing as preventing lateral loading within the context of the present invention, the head body of the tool will be configurable in a variety of ways. Rotation is transmitted between the tool and the screw drive bit via the gear and pinion system, although there are other known methods for achieving the same purpose; for example, a different transmission can be used and other rotational energy for transferring the point can be used The components. ©1 The pinion and the material of the tool can vary widely as long as it meets the reliability, flexibility requirements, and more generally the requirements encountered when using the device. Advantageously, plastic can be used, for example, can be used. In addition, various components and various pieces of equipment for removing the pinion and extracting the tool in the pinion/screw drive bit assembly are contemplated without departing from the scope of the invention. The invention is, of course, not limited to the embodiments described and illustrated by way of example, and also includes all technical equivalents and combinations thereof. BRIEF DESCRIPTION OF THE DRAWINGS [0009] Other features and advantages of the present invention will be apparent from the description of the drawings. • Figure 1 is a cross-sectional view of a device for tightening a pinion and tool positioned relative to each other in accordance with the present invention. Figure 2 is a cross-sectional view of a device for a screwing operation with pinions and tools positioned relative to one another in accordance with the present invention. Figure 3 shows a top view of the tool disposed on the screw drive bit. 12996l.d〇c • 14· 200940035 Figure 4 illustrates a side view of the device attached to a screw-driven drill bit. Figure 5 illustrates a cross-sectional and top plan view of an alternative form of a pinion that can be used in a device in accordance with the present invention. Figure 6 depicts two cross-sectional views of a screw driven drill bit support cylinder. Figure 7 illustrates two cross-sectional views of a screw-driven drill head support cylinder equipped with a ten-toothed pinion. [Main component symbol description] ❹ 1 Handle 2 Tool 3 Handle 4 Pinion 5 Drive mechanism 6 Linear shaft 7 Gear 9 Head body® 16 Tool axis 17 Screw drive drill bit - 22 Shell 8 Opening 10 Slot 11 Cavity 12 Lateral part 13 slot 129961.doc -15- 200940035 open cylindrical space pinion pinion pinion pinion pinion pinion pinion pinion plane groove radial cut inner seal cylinder pinion 14 15 4a 4b 4c : 4d ' 4e 4f ❿ 4g 18 19 20 21 23 24 25 lugs
26 旋轉軸線 -16- 129961.doc26 axis of rotation -16- 129961.doc