TWM459839U - Structure of bone screws - Google Patents
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- TWM459839U TWM459839U TW102207539U TW102207539U TWM459839U TW M459839 U TWM459839 U TW M459839U TW 102207539 U TW102207539 U TW 102207539U TW 102207539 U TW102207539 U TW 102207539U TW M459839 U TWM459839 U TW M459839U
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Description
本創作係關於一種骨螺釘之結構，尤指一種具備兩段不相接續之螺紋部，且部分螺紋之深度有漸進變化之骨螺釘之結構。
The present invention relates to the structure of a bone screw, and more particularly to a structure of a bone screw having two segments of non-contiguous threaded portions and a progressively varying depth of a portion of the threads.
在骨頭矯形、治療之手術領域中，常用到使用骨螺釘的骨固定裝置。這些骨固定裝置包括骨板、椎間植入物或髓內釘，將兩塊或更多塊骨頭或骨碎片借助於以上裝置而彼此相對固定。於此，骨固定裝置通常為骨螺釘、釘形式的骨錨等，而上述骨固定裝置所帶來的問題是患者在正常活動過程中，這些骨螺釘會在骨中或骨板、椎間植入物或髓內釘中離開原位。In the field of bone orthopedics and treatment, bone fixation devices using bone screws are commonly used. These bone fixation devices include a bone plate, an intervertebral implant or an intramedullary nail that secures two or more bones or bone fragments relative to each other by means of the above device. Herein, the bone fixation device is usually a bone screw, a bone anchor in the form of a nail, etc., and the problem caused by the above bone fixation device is that during the normal movement of the patient, the bone screws will be implanted in the bone or in the bone plate and intervertebral space. Remove from the in situ or intramedullary nail.
因此如何強化骨螺釘在骨頭中的固定能力，即為相關領域研究發展時所欲突破的重要課題。Therefore, how to strengthen the ability of bone screws to fix in bones is an important topic for breakthroughs in research and development in related fields.
赫伯氏螺絲(herbert screw)是一種相當早期出現並被廣泛應用的骨螺釘，其設計是採用前段螺紋與後段螺紋的螺距不相同，以及螺牙外徑不相同的結構。The Herbert screw is a relatively early and widely used bone screw designed to have a different pitch between the front and rear threads and a different outer diameter of the thread.
這種骨螺釘在應用時，是先使用一種細長的導柱(guide pin)深入需要固定的骨折處，並做初步的固定，然後量測此段骨折處所需要植入螺釘的深度；接著，再利用骨折近端專用鑽頭將骨折前端部位鑽出一個通道，以讓之後要植入的骨螺釘可以進入。接下來，醫護人員再使用骨折遠端專用鑽頭沿著前述通道繼續鑽出更深的通道，讓骨螺釘得以進一步推進。In the application of this kind of bone screw, an elongated guide pin is used to deeply penetrate the fracture to be fixed, and preliminary fixation is performed, and then the depth of the screw to be implanted in the fracture site is measured; then, A special drill bit for the proximal end of the fracture is used to drill a channel at the front end of the fracture so that the bone screw to be implanted later can enter. Next, the medical staff will continue to drill deeper channels along the aforementioned channels using the special drill bit for the distal end of the fracture, allowing the bone screw to be further advanced.
基於此開鑿出的通道，醫護人員接著利用中空的攻牙器順著導柱滑進通道中，並且進行攻牙；最後再將赫伯氏螺絲鎖上，此時赫伯氏螺絲所具有的前段螺紋與後段螺紋會分別鎖固於骨折處的兩段裂骨中，因此可以透過緊縮加壓的機制而讓骨頭達到復位效果。Based on the drilled passage, the medical staff then uses a hollow tapper to slide into the channel along the guide post and tapping; finally, the Herb's screw is locked, and the Herbert screw has the front section. The thread and the rear thread are respectively locked in the two sections of the fracture, so that the bone can be restored by the mechanism of tightening and pressing.
不過，此種骨螺釘也有改進之處，並且有多種衍生之相關態樣，例如美國專利號US 5964768即揭示了一種可變螺紋之骨螺釘，其係採用一道螺紋由骨螺釘的首端直至其尾端，並且整體形狀外觀為錐形之結構設計，且此螺紋所建構出的螺距都不相同。However, such bone screws are also improved, and there are a variety of derived related aspects. For example, U.S. Patent No. 5,964,768 discloses a variable thread bone screw that uses a thread from the leading end of the bone screw to its The end end, and the overall shape of the appearance of the tapered structure design, and the thread constructed by the different pitches.
在這種結構之下，其螺紋之每一道的深度會受到錐形設計的影響而出現深淺的變化，也就是靠近首端之螺紋深度較深，而靠近尾端之螺紋深度較淺，整體呈連續性的變化。這種設計係在使用螺紋攻入骨頭的基礎上，輔助增添了整體結構的錐形設計而強化了推進、貫入的力度，使得骨螺釘的植入骨頭能力有所提升。Under this structure, the depth of each of the threads will be affected by the conical design and the depth will be deeper, that is, the depth of the thread near the end is deeper, and the depth of the thread near the end is shallower. Changes in continuity. This design is based on the use of threads to break into the bones, which helps to add a tapered design of the overall structure and strengthens the strength of advancement and penetration, which improves the ability of bone screws to implant bones.
綜觀上述之現有技藝，如何在骨螺釘的發展演進上進一步提出更新穎、鎖固效果更佳之結構設計，即是本創作所要揭示之事項。
Looking at the above-mentioned prior art, how to further improve the structural design of the bone screw and improve the structure of the locking and locking effect is the matter to be revealed in this creation.
本創作之主要目的，係提供一種骨螺釘之結構，其具有兩段不相互接續之螺紋部，可設計該些螺紋部當中的螺紋間距是否為固定或逐步變化而以可變螺紋的形式作靈活運用，使其在與骨頭接合時提供良好的壓縮效果，提升鎖固能力。The main purpose of the present invention is to provide a structure of a bone screw having two threaded portions that are not connected to each other, and it is possible to design whether the thread pitch among the thread portions is fixed or stepwise and flexible in the form of a variable thread. It is used to provide a good compression effect when joining the bone and to improve the locking ability.
本創作之次要目的，係提供一種骨螺釘之結構，其中心骨幹在靠近尾端部分之寬度逐漸增加，因此在鑽入骨骼時，可獲致較好的推進效果。The secondary purpose of this creation is to provide a structure of a bone screw whose center backbone is gradually increased in width near the end portion, so that a better propulsion effect can be obtained when drilling the bone.
本創作之再一目的，係提供一種骨螺釘之結構，其骨釘主體是呈中空之管狀形式，因此可藉由導柱(guide pin)的輔助而深入需要被固定的骨頭。A further object of the present invention is to provide a bone screw structure in which the main body of the bone nail is in a hollow tubular form, so that the bone to be fixed can be deepened by the aid of a guide pin.
為了達到上述之目的，本創作揭示了一種骨螺釘之結構，其係包含：一骨釘主體，其具有一首端(leading end)以及一尾端(trailing end)；一第一螺紋部，環繞設置於該骨釘主體之該首端之表面；一連接部，其係為該骨釘主體之無螺紋表面，該連接部一側連接該第一螺紋部；以及一第二螺紋部，其係連接該連接部之另一側，環繞設置於該骨釘主體之該尾端之表面；其中，該第二螺紋部之中之螺距(pitch)係由該首端朝該尾端的方向依序遞減。據此結構，即可在使用工具而將之鑽入人體骨頭時，藉由其先鑽入之第一螺紋部所攻出之通道，而讓後鑽入之第二螺紋部被順利引導，並且在另配合骨釘主體的直徑漸增之下，提供較大的推力而使本創作易於鎖入骨頭當中。
In order to achieve the above object, the present invention discloses a structure of a bone screw, comprising: a bone nail body having a leading end and a trailing end; a first thread portion surrounding a connecting surface of the bone nail body; a connecting portion, which is a non-threaded surface of the bone nail body, the connecting portion is connected to the first thread portion; and a second thread portion Connecting the other side of the connecting portion to surround the surface of the tail end of the bone nail body; wherein a pitch of the second thread portion is sequentially decreased from the head end toward the tail end . According to this configuration, when the tool is used to drill into the human bone, the second threaded portion of the rear drilled hole is smoothly guided by the passage which is first drilled into the first thread portion. In addition to the diameter of the main body of the nail, the larger thrust is provided to make the creation easier to lock into the bone.
1‧‧‧骨釘主體
11‧‧‧首端
12‧‧‧尾端
13‧‧‧切面
14‧‧‧鎖孔
15‧‧‧內管徑
2‧‧‧第一螺紋部
21‧‧‧第一螺紋段
22‧‧‧第二螺紋段
23‧‧‧連接段
3‧‧‧第二螺紋部
4‧‧‧連接部
5‧‧‧骨頭
51‧‧‧第一斷骨
52‧‧‧第二斷骨
6‧‧‧導柱
D1‧‧‧螺距
D2‧‧‧螺距
DO‧‧‧外徑1‧‧‧ bone nail body
11‧‧‧ head end
12‧‧‧End
13‧‧‧faced
14‧‧‧Keyhole
15‧‧‧ inner diameter
2‧‧‧First threaded part
21‧‧‧First thread segment
22‧‧‧Second thread segment
23‧‧‧ Connection section
3‧‧‧Second thread
4‧‧‧Connecting Department
5‧‧‧ bones
51‧‧‧First broken bone
52‧‧‧Second Broken Bone
6‧‧‧ Guide column
D 1 ‧‧‧pitch
D 2 ‧‧‧pitch
D O ‧‧‧OD
第一圖：其係為本創作之結構示意圖；
第二圖：其係為本創作於應用時之示意圖；
第三圖：其係為本創作中，骨釘主體之外觀示意圖；
第四圖：其係為本創作之外徑示意圖；
第五圖：其係為本創作中，首端處之切面之結構示意圖；
第六圖：其係為本創作中，尾端處之鎖孔之結構示意圖；以及
第七圖：其係為本創作中，另一較佳實施例之結構示意圖。
The first picture: it is a schematic diagram of the structure of the creation;
The second picture: it is a schematic diagram of the creation of the application;
The third picture: the outline of the appearance of the main body of the bone nail in the creation;
The fourth picture: the outline of the outer diameter of the creation;
The fifth picture: it is a schematic diagram of the structure of the cut surface at the head end of the creation;
Fig. 6 is a schematic view showing the structure of the keyhole at the end of the present invention; and the seventh figure: it is a schematic structural view of another preferred embodiment.
為使本創作之特徵及所達成之功效有更進一步之瞭解與認識，謹佐以較佳之實施例及配合詳細之說明，說明如後：For a better understanding and understanding of the features of the creation and the efficacies achieved, please refer to the preferred examples and detailed explanations as follows:
首先，請參考第一圖，其係為本創作之結構示意圖；如圖所示，其係包含一骨釘主體1、一第一螺紋部2、一第二螺紋部3以及一連接部4；其中，該骨釘主體1係呈長條管狀，其在結構上具有首端11以及尾端12，而第一螺紋部2係環繞設置於骨釘主體1該之首端11之表面，也就是往首端11側的表面靠攏，第二螺紋部3是環繞設置於骨釘主體1之該尾端12之表面，也就是往尾端12側的表面靠攏，而連接部4則是介於第一螺紋部2以及第二螺紋部3之間，係為骨釘主體1之無螺紋表面。First, please refer to the first figure, which is a schematic structural view of the present invention; as shown, it comprises a bone nail body 1, a first threaded portion 2, a second threaded portion 3 and a connecting portion 4; The main body 1 of the bone nail has a long tubular shape, and has a first end 11 and a tail end 12 in a structure, and the first threaded portion 2 is disposed around the surface of the head end 11 of the bone nail body 1, that is, The surface of the first end 11 is close together, and the second threaded portion 3 is disposed around the surface of the tail end 12 of the bone nail body 1, that is, the surface toward the tail end 12, and the connecting portion 4 is interposed. Between the threaded portion 2 and the second threaded portion 3 is a non-threaded surface of the nail body 1.
本創作係類似於赫伯氏螺絲(herbert screw)，可用於各式骨頭之固定。其中的骨釘主體1係為中空，其在使用時，請參考第二圖，其係先以一細長之導柱6(guide pin)深入欲予固定的骨頭5中，此骨頭5的深處具有骨裂處而***為第一斷骨51和第二斷骨52，然後將中空的骨釘主體1穿設於此導柱6，進而逐步鎖固於骨頭5之中，因此本創作即係透過結構上的特殊設計而提高其鎖固的能力以及效率。This creation is similar to the Herbert screw and can be used for the fixation of all types of bones. The main body 1 of the bone nail is hollow, and when it is used, please refer to the second figure, which is first deep into the bone 5 to be fixed by a guide pin 6 (the guide pin), the depth of the bone 5 Having a bone fracture and splitting into a first broken bone 51 and a second broken bone 52, and then the hollow bone nail main body 1 is placed on the guide post 6, and then gradually locked in the bone 5, so the creation is Improve the ability and efficiency of locking through the special design of the structure.
復請參考第一圖，環繞設置於骨釘主體1鄰近首端11之表面上的第一螺紋部2是先鑽入骨骼的部分，其螺距(pitch)可為兩種實施態樣。其一為完全相同，也就是在第一螺紋部2當中，其所環繞出的每個螺距D1 之尺寸係維持定值；其二則是由首端11朝該尾端12的方向逐漸減少，也就是第一螺紋部2在環繞於骨釘主體1的路徑上，其越靠近尾端12的部分，螺距D1 的尺寸就顯得越小、越加密集。Referring to the first figure, the first threaded portion 2 disposed around the surface of the bone nail main body 1 adjacent to the head end 11 is a portion into which the bone is first drilled, and the pitch thereof can be two embodiments. One of them is identical, that is, in the first threaded portion 2, the size of each pitch D 1 surrounded by the threaded portion 2 is maintained constant; and the second is gradually decreased from the leading end 11 toward the trailing end 12 , namely a first threaded portion 2 on the path around the main body 1 of the nail, the portion near its trailing end 12, the pitch dimension D 1 becomes smaller, increasingly intensive.
若第一螺紋部2的每個螺距D1 之尺寸相同，則此種不可變螺紋，在製作上比較單純，成本較低；而若第一螺紋部2的每個螺距D1 之尺寸是以逐漸縮短的方式呈現，則此種可變螺紋在鑽入骨頭時，可產生骨頭間壓縮效果，讓鎖固能力得到提升。If the size of each pitch D 1 of the first threaded portion 2 is the same, the non-variable thread is relatively simple in manufacture and low in cost; and if the size of each pitch D 1 of the first threaded portion 2 is In a gradually shortened manner, such a variable thread can produce an inter-bone compression effect when drilling into a bone, thereby improving the locking ability.
第二螺紋部3的螺距D２ 形式則係由首端11朝尾端12的方向逐漸減少，不過其與第一螺紋部2逐漸縮短螺距D１ 的形式略有差異，其螺距D２ 在減少、縮短的程度上較第一螺紋部2的螺距D１ 來得顯著，也就是第二螺紋部3的螺距D２ 縮短比例大於第一螺紋部2的螺距D１ ，因此可以提供更顯著的骨頭間壓縮效果。The pitch D 2 form of the second threaded portion 3 is gradually reduced from the leading end 11 toward the trailing end 12, but it is slightly different from the form in which the first threaded portion 2 is gradually shortened by the pitch D 1 , and the pitch D 2 is decreased. The degree of shortening is more remarkable than the pitch D 1 of the first threaded portion 2, that is, the pitch D 2 of the second threaded portion 3 is shortened by a larger ratio than the pitch D 1 of the first threaded portion 2, so that a more significant bone between the bones can be provided. Compression effect.
另外，本創作中的第一螺紋部2與第二螺紋部3之間並沒有接續的連接關係，兩者係互為獨立地環繞在骨釘主體1靠近兩端的表面，透過連接部4的隔絕而沒有在螺紋結構上相連接。In addition, there is no continuous connection relationship between the first threaded portion 2 and the second threaded portion 3 in the present invention, and the two are independently wrapped around the surface of the bone nail main body 1 at both ends, and are insulated by the connecting portion 4 There is no connection on the thread structure.
本創作中，除了第一螺紋部2以及第二螺紋部3的螺距D１ 、D２ 變化設計以外，在第一螺紋部2以及第二螺紋部3的螺紋深度上也有特徵存在。在本創作的結構中，可參考第三圖，骨釘主體1之直徑於第二螺紋部3環繞設置之處，係由該尾端12朝該首端11之方向依序遞減，形成一個類似錐形的結構，而在第一螺紋部2環繞設置之處則維持著相同的骨釘主體1直徑，因此維持著長條管形結構。而在骨釘主體1之直徑變化的同時，請參考第四圖，第一螺紋部2和第二螺紋部3的外徑DO 係維持著一致，致使第一螺紋部2和第二螺紋部3的螺紋深度(螺牙)有所變化。In the present creation, in addition to the design of the pitches D 1 and D 2 of the first threaded portion 2 and the second threaded portion 3, the thread portions of the first threaded portion 2 and the second threaded portion 3 are also characterized. In the structure of the present invention, reference may be made to the third figure, where the diameter of the main body 1 of the bone is disposed around the second threaded portion 3, and the tail end 12 is sequentially decreased toward the leading end 11 to form a similar The tapered structure maintains the same diameter of the main body 1 of the bone when the first threaded portion 2 is circumferentially disposed, thus maintaining a long tubular structure. While the diameter of the nail main body 1 is changed, referring to the fourth figure, the outer diameters D O of the first threaded portion 2 and the second threaded portion 3 are maintained to be uniform, so that the first threaded portion 2 and the second threaded portion are caused. The thread depth (thread) of 3 has changed.
在第一螺紋部2的螺牙和第二螺紋部3的螺牙深淺有所變化之下，基於第一螺紋部2的螺牙較深，可使本創作於此區段在咬住骨頭時有較佳的引導效果，並且優先在骨頭內攻牙形成通道，以進一步引導第二螺紋部3進入骨頭。Under the change of the thread depth of the thread of the first threaded portion 2 and the threaded portion of the second threaded portion 3, the thread based on the first threaded portion 2 is deeper, so that the present portion can be bitten when the bone is bitten. There is a better guiding effect, and the tapping is preferentially formed in the bone to further guide the second threaded portion 3 into the bone.
當第二螺紋部3進入第一螺紋部2所攻出的通道時，第二螺紋部3可順著第一螺紋部2所攻出的通道而藉由其螺距D２ 縮小而提供較高的壓縮效果，並且透過其所環繞之骨釘主體1的錐形結構，可推動後方骨頭向前移動，藉此產生較高的推力使骨頭復位。在搭配螺牙深淺和螺距的變化之下，本創作在使用上較容易鎖入骨頭內部，以及提供較佳復位效果的成效。When the second threaded portion 3 enters the passage of the first threaded portion 2, the second threaded portion 3 can be provided by the passage of the first threaded portion 2 to be narrowed by the pitch D 2 thereof to provide a higher The compression effect, and through the tapered structure of the nail body 1 around it, can push the rear bone forward, thereby generating a higher thrust to reset the bone. Under the change of the depth and pitch of the screw, the creation is easier to lock into the inside of the bone and provide better reset effect.
本創作中，於骨釘主體1之首端11的開口處具有至少一切面13，如第五圖所示之實施例，該首端11的開口處是由三個切面13所組成鑽孔尖端，其在鑽入骨頭時，能提供足夠的突破能力而讓醫護人員能夠在較省力的狀況下將本創作逐步往骨頭深處推進。In the present creation, at least the face 13 is formed at the opening of the leading end 11 of the nail body 1, as in the embodiment shown in FIG. 5, the opening of the head 11 is composed of three cut faces 13 It can provide enough breakthrough ability when drilling into the bones, so that the medical staff can gradually push the creation deep into the bones under the condition of less labor.
而在骨釘主體1之尾端12的開口處，請參考第六圖，本創作是設計為具有一鎖孔14，其直徑大於骨釘主體1中空之內管徑15，使得細長之導柱6穿過骨釘主體1時，醫護人員仍可以使用中空螺絲起子等器械，穿過導柱6而嵌合於鎖孔15，以單獨對骨釘主體1施力而使之旋轉，進而配合第一螺紋部2和第二螺紋部3而讓本創作得以深入骨頭。鎖孔15可製備為六角形，以搭配此技術領域目前較普遍使用的六角螺絲起子。At the opening of the tail end 12 of the bone nail main body 1, please refer to the sixth figure. The present invention is designed to have a locking hole 14 having a diameter larger than the inner diameter 15 of the hollow body 1 so that the elongated guide post 6 When passing through the nail main body 1, the medical staff can still use the hollow screw driver or the like to fit through the guide post 6 and fit into the lock hole 15 to individually apply force to the nail main body 1 to rotate, thereby cooperating with A threaded portion 2 and a second threaded portion 3 allow the creation to penetrate the bone. The keyhole 15 can be made in a hexagonal shape to match the hexagonal screwdrivers currently used in the art.
除上述實施例外，本創作可為另一實施方式，請參考第七圖；如圖所示，第一螺紋部2的結構更包含了連接於首端11的第一螺紋段21、連接於第一螺紋段21的連接段23，以及連接於連接段23之另一側的第二螺紋段22，三者連接而架構出第一螺紋部2。於此結構中，第一螺紋段21和第二螺紋段22維持具有螺紋之設計，而連接段23則如同連接部4，係為無螺紋之區段。In addition to the above embodiments, the present invention may be another embodiment. Please refer to the seventh figure. As shown, the structure of the first threaded portion 2 further includes a first thread segment 21 connected to the head end 11 and connected to the first A connecting section 23 of a threaded section 21 and a second threaded section 22 connected to the other side of the connecting section 23 are connected to form the first threaded portion 2. In this configuration, the first threaded section 21 and the second threaded section 22 maintain a threaded design, and the connecting section 23 is like the connecting portion 4 and is a non-threaded section.
請配合參考第二圖之骨頭結構，此實施例會透過第一螺紋段21所提供的縮緊推力產生較緩和骨頭斷面間壓縮效果，而當第二螺紋段22之緊縮推力進入第二斷骨52時，第二螺紋段22之緊縮推力會累加於第一螺紋段21所提供的縮緊推力上，使得緊縮推力緩慢增加。而當後續第二螺紋部3的縮緊推力進入第二斷骨52時，其縮緊推力進一步累積在先前兩股緊縮推力上，使緊縮推力達到最大值。此實施例的目的在於減少緊縮推力過度發生，以較緩和的方式慢慢增加，而使骨頭5的斷面處能夠緊密接合。Referring to the bone structure of the second figure, this embodiment will produce a gentle compression effect between the bone sections through the tightening thrust provided by the first thread section 21, and when the tightening thrust of the second thread section 22 enters the second broken bone. At 52 o'clock, the tightening thrust of the second thread segment 22 is accumulated on the tightening thrust provided by the first thread segment 21, so that the tightening thrust is slowly increased. When the tightening thrust of the subsequent second threaded portion 3 enters the second broken bone 52, the tightening thrust is further accumulated on the previous two tightening thrusts, so that the tightening thrust reaches a maximum value. The purpose of this embodiment is to reduce the occurrence of excessive tightening thrust, and to increase slowly in a more gentle manner, so that the cross section of the bone 5 can be tightly joined.
配合透過上述之結構設計，本創作所揭示之骨螺釘之結構在使用鈦合金為材質之下，具備生物相容性而無產生排斥反應的問題，讓使用者在長期使用之下也不會感覺到有異物存在；而同時對醫護人員而言，這種骨螺釘在鎖固時，能在與骨頭接合時可提供良好的壓縮效果，並且易於讓醫護人員透過器械而將之逐步推進至骨頭深處，具有可靠性和便利性，故在各個面向都有所兼顧之下，本創作無疑提供了一具經濟和實用價值之骨螺釘之結構。In combination with the above-mentioned structural design, the structure of the bone screw disclosed in the present invention is biocompatible without the occurrence of rejection reaction under the condition of using titanium alloy, so that the user does not feel under long-term use. To the presence of foreign bodies; at the same time, for the medical staff, the bone screw can provide a good compression effect when it is engaged with the bone, and it is easy for the medical staff to gradually advance to the bone through the instrument. With reliability and convenience, this creation undoubtedly provides a structure of bone screws with economical and practical value.
惟以上所述者，僅為本創作之較佳實施例而已，並非用來限定本創作實施之範圍，舉凡依本創作申請專利範圍所述之形狀、構造、特徵及精神所為之均等變化與修飾，均應包括於本創作之申請專利範圍內。
However, the above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and the variations, modifications, and modifications of the shapes, structures, features, and spirits described in the scope of the patent application. , should be included in the scope of the patent application of this creation.
1‧‧‧骨釘主體 1‧‧‧ bone nail body
11‧‧‧首端 11‧‧‧ head end
12‧‧‧尾端 12‧‧‧End
2‧‧‧第一螺紋部 2‧‧‧First threaded part
3‧‧‧第二螺紋部 3‧‧‧Second thread
4‧‧‧連接部 4‧‧‧Connecting Department
D1‧‧‧螺距 D 1 ‧‧‧pitch
D2‧‧‧螺距 D 2 ‧‧‧pitch
Claims (10)
一骨釘主體，其具有一首端(leading end)以及一尾端(trailing end)；
一第一螺紋部，環繞設置於該骨釘主體之該首端之表面；
一連接部，其係為該骨釘主體之無螺紋表面，該連接部一側連接該第一螺紋部；以及
一第二螺紋部，其係連接該連接部之另一側，環繞設置於該骨釘主體之該尾端之表面；
其中，該第二螺紋部之中之螺距(pitch)係由該首端朝該尾端的方向依序遞減。A structure of a bone screw, the system comprising:
a bone nail body having a leading end and a trailing end;
a first threaded portion surrounding the surface of the head end of the bone nail body;
a connecting portion, which is a non-threaded surface of the bone nail body, the connecting portion is connected to the first thread portion on one side, and a second thread portion is connected to the other side of the connecting portion, and is disposed around the a surface of the tail end of the body of the bone nail;
The pitch of the second threaded portion is sequentially decreased from the leading end toward the trailing end.
一第一螺紋段，連接於該首端；
一連接段，連接於該第一螺紋段之一側；以及
一第二螺紋段，連接於該連接段之另一側。
The structure of claim 1, wherein the first threaded portion further comprises:
a first thread segment connected to the head end;
a connecting section connected to one side of the first threaded section; and a second threaded section connected to the other side of the connecting section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102207539U TWM459839U (en) | 2013-04-25 | 2013-04-25 | Structure of bone screws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102207539U TWM459839U (en) | 2013-04-25 | 2013-04-25 | Structure of bone screws |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM459839U true TWM459839U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW102207539U TWM459839U (en) | 2013-04-25 | 2013-04-25 | Structure of bone screws |
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| Country | Link |
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| TW (1) | TWM459839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI573558B (en) * | 2015-09-30 | 2017-03-11 | 愛派司生技股份有限公司 | Bone plate set having screws with a plurality of threaded areas |
-
2013
- 2013-04-25 TW TW102207539U patent/TWM459839U/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI573558B (en) * | 2015-09-30 | 2017-03-11 | 愛派司生技股份有限公司 | Bone plate set having screws with a plurality of threaded areas |
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