201119703 六、發明說明： 【發明所屬之技術領域】 針頭之安 本發明關於一套管的結構，特別是關於一 全雙套管的結構。 【先前技術】 針筒是將藥液、血液或營養液等液狀物質注射於 體内所使用的一種器具。其係藉由針 … 再利用針筒内之活塞的推力，H針^^於病人體内 經由針頭輸人於病人==儲存於針筒内的上述液趙 2使用時，針筒的針頭係插人於病人的體内，因此 #同使用後’其針頭即沾时病人的血液。為避免五人 μ病人的意外感染’必須將使用過後 理，以防止任何人的接觸。 财以文王處 〃依此’乃有所謂安全針筒的結構，其主要是將使 後的針頭予以收藏或折斷在一 觸，以避免感染。㈣^内，避免任何人的接 +第圖是繪示習知一種安全針筒的結構，其 中第圖為其組合圖，第2圖為其分解圖。 如圖所示，習知安全針筒包括有一針筒部400、一針 頭500與一針頭奈瞢α 对 卞頭套“〇〇。針筒部400包含有一筒體41〇 與一活塞桿420 ;筒體41〇具# 第二請，其中第二端具有=3f 由第一‘化塞合於筒體指的内部。針頭包含有一 201119703 =5H)與一支承該針體的針座52〇;針座η :夕突出的多數外突體521，且針座別的端部的一相 體旋對突片522,能以該對突片522作為外螺 ;筒部400的螺孔413而與針筒部結合為一體。 斑:管600具有一管體61〇，其具有相對一開口端川 女f 口端612’且管體_於鄰近開口端6H的部位設 ^吕體内邛大出的多數内突體（未圖示），針頭500由開201119703 VI. Description of the invention: [Technical field to which the invention pertains] Needle safety The present invention relates to the structure of a bushing, and more particularly to the structure of a full double bushing. [Prior Art] A syringe is an instrument used to inject a liquid substance such as a drug solution, blood or a nutrient solution into a body. The needle is used to re-use the thrust of the piston in the syringe, and the H needle is used to input the patient through the needle to the patient in the patient body == the above-mentioned liquid Zhao 2 stored in the syringe, the needle of the syringe Inserted into the patient's body, so # after use, the needle is the patient's blood. In order to avoid accidental infection of five people μ patients, it must be used to prevent contact by anyone. The king of wealth and wealth is converted to the structure of a so-called safety syringe. The main purpose is to collect or break the needle behind it to avoid infection. (4) ^, to avoid anyone's connection + The figure shows the structure of a conventional safety syringe, the first picture is its combination picture, the second picture is its exploded view. As shown, the conventional safety syringe includes a syringe portion 400, a needle 500 and a needle 瞢 卞 卞 〇〇 〇〇. The syringe portion 400 includes a barrel 41 〇 and a piston rod 420; Body 41 cookware # second please, wherein the second end has =3f by the first 'seal plug inside the barrel finger. The needle contains a 201119703 = 5H) and a needle holder 52 支承 supporting the needle; needle a seat η: a plurality of outer protrusions 521 protruding from the eve, and a phase of the end portion of the needle holder is rotated to the protrusion 522, and the pair of protrusions 522 can be used as the external snail; the screw hole 413 of the tube portion 400 is attached to the needle The tube portion is integrated into one. The spot: the tube 600 has a tube body 61〇, which has a mouth end 612' opposite to an open end, and the tube body_ is located near the open end 6H. Most internal protrusions (not shown), the needle 500 is opened
^ 1套置於針頭套管600的内部，使得針頭套管600 相對套覆於針頭的外部，用以遮覆針頭500。^ 1 is placed inside the needle cannula 600 such that the needle cannula 600 is overlaid on the outside of the needle to cover the needle 500.
使用時，係將針頭套管_取下，以顯露針頭5〇〇， 即可以針頭_及活塞桿的抽推動作，以抽取或注射 必要的液體。當注射完成後，復將針頭套管6GG套覆於針 頭5〇〇外部，並旋轉該針頭套管；此時，針頭套管_即 可以其内突體帶動針頭500的外突體521旋轉，使得針頭 被—併旋轉而自針筒部彻旋出，並與針頭套管_ 套合為-體而被視為污染物處理。未接觸到病人的針筒部 4〇〇則可另行處理或被回收使用。 上述習知安全針筒，其結構簡捷、使用方便、成本低 廉’為目前最常使用的安全針筒。惟該習知安全針筒於使 用時有如下賴。即：當針筒注料錢護人員欲將 針頭500套置於針頭套管6〇〇時，其針頭5〇〇係以沿著針 體510的長度方向由針頭套管6〇〇的開口端611直向插置 於該針頭套管的内部；然而，此一沿著針體51〇長度方向 的插置動作，有可能因不慎或意外的推碰等因素，使得針 201119703 體510的大端沿其長度方向順勢刺入於醫護人員的手 部’而造成醫護人員等使用者意外的感染。因此，就習知 安全針筒之針頭套管的結構及使用而言，實有加以改善之 必要。 【發明内容】 針對上述習知安全針筒之針頭套管的缺點，本發明之 頭安全雙套管，避免針筒的針 避免=二=於提供一種針頭安全雙套管，可 發月再目的在於提供一種針 部份始終與針頭套合在一起，無遺漏之虞。其 安全逑：目的’本發明之-態樣是在提供-種針頭 管包括有相套合的上管:：碩，該針頭安全雙套 度方向具有相對的一突體;管體沿其長 二側壁，管= 有相對的一第-側壁與-第 的第二側壁則自 伸的-第_ 開设有一沿著管體長度方向延 狎的第—開縫。外套管套覆於内m 的一側壁設有沿著外套管長度 1，且外套管 官的第-開縫為相對齊或相錯位。當兩開縫相對齊… 201119703 夺提供供針筒之針頭上下橫向跨置的管道，避免針頭 直向刺入使用者手部的危險；當兩開縫相錯位時，則可將 針頭遮覆於由内、外套管所構成的雙套管内，避免針頭殘 留的藥液由其開縫流出。 ,、根據本發明的-實施例’管體之封口端的外侧壁設有 至少-逆止擋體，防止外套管自管體的封口端脫落。 根據本發明的一實施例，在沿著第一側壁的長度方向 上，於外套管的外側壁與管座的外側壁之間設有一扣合單 =使得外套管及管體可以其連結部為轴而外翻，並繼之 ί官體相縣合，以在使科保持外套管及管體敞開的狀 態。 根據本發明的一實施例，扣合單元包含有設於外套管 之外側壁的一第一扣合元件例如扣體或扣槽，與設於管座 之外側壁並與第—扣合元件相配應的—第二扣合元件例 如扣槽或扣體，而可兩相扣合。 【實施方式】 、有關本發明之前述及其他技術内容、特點與功效，在 、下配5參考圖式的實施例詳細說明當中，將可清楚的呈 現。 第3圖是繪示依照本發明一實施方式之針頭安全雙 Β的刀解圖，並顯示其與一針筒之針頭及針筒部的分解 圖，第4圖及第5圖是繪示針頭安全雙套管分別由管體之 第側壁及第二側壁方向所視的分解圖；第6圖是緣示針 201119703 頭女全雙套管的組合外觀示意圖。 八睛t閱第3圖所示’依照本發明一實施方式之針頭安 王雙套g同樣實鈀於習知安全針筒的針筒部彻與針頭 =〇 ’該些針筒部與針頭具有與習知相同的構造。即：針 筒°M00包含有一筒體410與一活塞桿420;筒體410具有相 對的：第-端411與一第二端412，該第二端具有一螺孔 413;活塞桿傷由第-端411塞合於筒體41()的内部。針頭 500包含有-針體51G與—支承該針體的針座⑽；針座⑽ 籲的外周設有向外突出的多數外突體521，且針座52〇的端部 的一相對側部設有-相對突片522，能以該對突片您作為 外螺體旋入於針筒部4〇〇的螺孔413,而與針筒部沾 一 體。 口 ’、 印參閱第3圖至第6圖所示，依照本發明一實施方式的 針頭安全雙套管100包括有一内套管2〇〇與一套覆於該内 套管外周的外套管300。 φ 内套官200包含有於一側相連的一管座210與一管體 220。再詳言之，管座210套置於針頭5〇〇之針座52〇的外周 ，且官座210的内壁具有多數内突體211(請參閱第丨丨圖） ，其與針頭500的外突體521相配應。管體220沿其長度方 向具有相對的一開口端221與一封口端222，其中開口端 222係鄰向管座210 ;管體220沿其圓周方向則具有相對的 一第一侧壁223與一第二侧壁224，其中第一側壁223以一 連結部225與管座210相連結，而管體22〇的第二側壁224 則自其開口端221開始設有一沿著管體22〇長度方向延伸 201119703 的一第一開缝226。 外套官300套覆於内套管2〇〇的外周。外套管3〇〇的一 側壁設有沿著該外套管長度方向延伸的—第二開縫训， 其可被調整為與内套管2〇〇的第一開縫226相對齊或相錯 位。當第二開縫310與第一開縫226相對齊時，提供一供針 頭500套置的管道；當第二開縫31〇與第一開縫跳相錯位 時，則可將針頭500遮覆於由内、外套管所構成的雙套管 内0 • #體220之封口端222的外側壁設有至少一逆止揚體 227，在外套管300套覆於内套管2〇〇的外周之後逆止擋 體227可防止外套管3〇〇自管體220的封口端222脫落。田 在沿著管體220第一側壁223的長度方向上，於外套管 300的外側壁與管座21〇的外侧壁之間設有一扣合單元之別 使仔外套管300及管體220可以其連結部225為軸而外翻， 並繼之與官體210相互扣合，以在使用時保持外套管3〇〇 φ 及管體22〇敞開的狀態。 在實施上，扣合單元230包含有設於外套管3〇〇之外側 壁的一第一扣合元件231 ’與設於管座21〇之外側壁並與第 扣合元件231相配應的一第二扣合元件232。其中第一扣 合元件231例如為一扣體或一扣槽，而第二扣合元件232 則相對應地為一扣槽或一扣體。 第7圖是繪示將針頭取出或置入於安全雙套管内的 操作不意圖；第8圖是繪示針頭安全雙套管於使用針頭狀 態下而將該安全雙套管扣合定位時的操作示意圖；第9圖 201119703 是繪示安全雙套管與針頭及針筒部的組合剖視圖，並顯示 其中之内套會與外套管的開縫相互對齊的狀態。 請一併參閱第第7圖至第9圖所示，當醫護人 針頭500注射時，首先將外套管3_移至管體咖部位， ，旋轉外套官3GG ’使得外套管300的第二開縫31〇與内套 g 200之官體22〇的第一開縫226相對齊（如第9圖所示）；此 ，，官體220及外套管300即得以連結部225為轴外翻，使 得針頭500的針體51〇相#地沿著相對齊的第一開縫挪及 第二開縫310而外露（如第7圖所示）；繼續將管體22〇及外 套管300外翻’並以外套管期所設的第一扣合元件231與 管座210的第二扣合元件232相扣合而定位，且相對使得針 頭500的針體51〇完全突露於外部（如第8圖所示），此時， 即可以針體510配合活塞桿420的抽推動作，以吸取藥液及 >主射藥液。 第10圖是繪示安全雙套管與針頭及針筒部的組合剖 視圖’並顯示其中之内套管與外套#的開縫相互錯位的狀 癌'，第11圖是繪示沿第1〇圖之A_A線所取的剖視圖； 第12圖是繪示利用針頭安全雙套管將針頭自針筒部旋 出’並與針頭套合為一體的示意圖。 請一併參閱第第10圖至第12圖所示，當醫護人員以針 頭500的針體510插入於病人體内並注射完成後，而欲將針 頭500套置於針頭安全雙套管1〇〇時，係相反於上述操作順 序即可，即：貧先解除外套管300與管座21〇的扣合關係， 並將外套管300及管體220以連結部225為軸回復成平直狀 201119703 態’使得針體510相對地沿其橫截面方向由上向下由針頭 安全雙套管100兩對齊的第一開縫226及第二開縫310橫向 鑲置入於針頭安全雙套管1〇〇的内部；之後，旋轉外套管 300 ’使其第二開縫310與管體220的第一開縫226相錯位， 以封覆該第一開縫226’而防止針體51〇殘餘的藥液自第一 開縫226流出，另將外套管3〇〇推移，使其同時套覆内套管 200的管座210及管體220，並遮覆連結部225及開口端221 ，防止管體220沿其連結部225及開口端221翻轉（如第1〇 • 圖所不）；隨後旋轉針頭安全雙套管1〇〇，即可以其内突體 211帶動針頭500的外突體521(如第u圖所示）旋轉，使得 針頭500被一併旋轉而自針筒部4〇〇旋出（如第12圖所示） 並與針頭女全雙套管100套合為一體而被視為污染物處 理：未接觸病人的針筒部400則可另行處理或被回收使用 〇 第一開縫226及第二開縫310的寬度係僅略大於針體 鲁510的粗度’其寬度細小’因此使用者的手指亦無法經由 開縫接觸到針體，確保使用者安全。 依照本發明一實施方式之針頭安全雙套管，其於套置 針頭時，針頭5〇〇並非沿其長度方向直向插置於針頭安全 雙套管100,亦即，其針頭5〇〇尖端並非沿著插置的施力方 向對準使用者的手部；而係沿著針體510的橫截面方向由 ^向下:由針頭安全雙套管1〇〇的開縫橫向鑲置於針頭安 王雙套官100的内部’因此能避免針體51〇的尖部順勢直向 刺入醫護人員等使用者手部的危險，避免遭受感染。另外 201119703 ，在套置針頭500後，針頭安全雙套管100具有相錯位的二 開縫，可避免針體510殘留的藥液自第一開縫226流出；再 者，在使用時，針頭安全雙套管100係始終與針頭500套合 在一起，無遺漏之虞。其安全性及應用性均佳。 雖然本發明以實施方式揭露如上，然其並非用以限定 本發明，任何熟習此技藝者，在不脫離本發明的精神和範 圍内，當可作各種的更動與潤飾，因此本發明之保護範圍 當視後附的申請專利範圍所界定者為準。 【圖式簡單說明】 為讓本發明之上述和其他目的、特徵、優點與實施例 能更明確易僅，所附圖式之說明如下： 第1圖是繪示習知一種安全針筒的組合圖。 第2圖是繪示第1圖所示習知安全針筒的分解圖。 第3圖是繪示依照本發明一實施方式之針頭安全雙 套管的分解圖，並顯示其與一針筒之針頭及針筒部的分解 鲁圖。 第4圖是繪示第3圖所示之針頭安全雙套管由管體第 一侧壁方向所視的分解圖。 第5圖是繪示第3圖所示之針頭安全雙套管由管體第 二侧壁方向所視的分解圖。 第6圖是繪示依照本發明一實施方式之針頭安全雙 套管的組合外觀示意圖。 第7圖是繪示依照本發明一實施方式之針頭安全雙 11 201119703 套管於將針頭取出或置入於該安全雙套管内的操作示意 圖。 第8圖是繪示依照本發明一實施方式之針頭安全雙 套管於使用針頭狀態下而將該安全雙套管扣合定位時的 操作示意圖。 第9圖是繪示依照本發明一實施方式之針頭安全雙 套管與針頭及針筒部的組合剖視圖，並顯示其中之内套管 與外套管的開縫相互對齊的狀態。 • 第10圖是繪示依照本發明一實施方式之針頭安全雙 套管與針頭及針筒部的組合剖視圖，並顯示其中之内套管 與外套管的開縫相互錯位的狀態。 第11圖是繪示沿第10圖之A-A線所取的剖視圖。 第12圖是繪示利用依照本發明一實施方式之針頭安 全雙套管將針頭自針筒部旋出，並與針頭套合為一體的示 意圖。 【主要元件符號說明】 100 :針頭安全雙套管 210 :管座 220 :管體 222 :封口端 224 :第二側壁 226 :第一開缝 230 :扣合單元 200 :内套管 211 :内突體 221 :開口端 223 :第一側壁 225 :連結部 227 :逆止擋體 231 :第一扣合元件 12 201119703 232 第二扣合元件 300 ： 外套管 310 第二開縫 400 ： 針筒部 410 筒體 411 : 第一端 412 — a 山 弟一竭 413 ： 螺孔 420 活塞桿 500 ： 針頭 510 針體 520 ： 針座 521 外突體 522 ： 突片In use, the needle cannula _ is removed to reveal the needle 5 〇〇, that is, the needle _ and the piston rod can be pulled to extract or inject the necessary liquid. When the injection is completed, the needle cannula 6GG is overlaid on the outside of the needle 5〇〇, and the needle cannula is rotated; at this time, the needle cannula can rotate the outer protrusion 521 of the needle 500 by its inner protrusion. The needle is rotated, and rotated from the barrel portion, and is fitted with the needle sleeve _ as a body to be treated as a contaminant. The syringe part of the patient that is not in contact with the patient can be disposed of separately or recycled. The above-mentioned conventional safety syringe has the advantages of simple structure, convenient use and low cost, and is the most commonly used safety syringe. However, the conventional safety syringe has the following advantages when used. That is, when the syringe injection technician wants to place the needle 500 in the needle cannula 6 ,, the needle 5 〇〇 is connected to the open end of the needle cannula 6 沿着 along the length of the needle body 510. 611 is inserted directly into the inside of the needle cannula; however, the insertion action along the length direction of the needle body 51 may cause the needle 201119703 body 510 to be large due to factors such as inadvertent or accidental pushing. The end penetrates the hand of the medical staff along its length direction, causing accidental infection of medical personnel and other users. Therefore, it is necessary to improve the structure and use of the needle sleeve of the conventional safety syringe. SUMMARY OF THE INVENTION In view of the above-mentioned disadvantages of the needle sleeve of the conventional safety syringe, the head of the present invention is safe and double-sleeve, avoiding the needle avoidance of the syringe=2=providing a needle-safe double sleeve, which can be used for recurrence It is to provide a needle part that is always combined with the needle sleeve, and there is no omission. Its safety 逑: the purpose of the present invention is to provide a needle tube comprising a phased upper tube:: the needle has a relative double protrusion in the direction of the safety; the tube body along its length The two side walls, the tube = the opposite first side wall and the second second side wall are self-stretching - the first opening has a first slit extending along the length of the tube body. A side wall of the outer sleeve covering the inner m is provided along the length of the outer sleeve 1, and the first slit of the outer sleeve is aligned or dislocated. When the two slits are aligned... 201119703 Provides a pipe for the needle to be placed up and down laterally to avoid the risk of the needle penetrating directly into the user's hand; when the two slits are misaligned, the needle can be covered In the double sleeve formed by the inner and outer sleeves, the liquid medicine remaining in the needle is prevented from flowing out of the slit. The outer side wall of the sealing end of the tubular body according to the embodiment of the present invention is provided with at least a reverse stopper to prevent the outer sleeve from coming off the sealing end of the tubular body. According to an embodiment of the present invention, a fastening sheet is disposed between the outer side wall of the outer sleeve and the outer side wall of the tube seat along the length direction of the first side wall, so that the outer sleeve and the tube body can be connected thereto. The shaft is turned outwards, and then the official body of the county is closed to keep the outer casing and the pipe open. According to an embodiment of the invention, the fastening unit includes a first fastening component, such as a buckle body or a buckle groove, disposed on the outer side wall of the outer sleeve, and is disposed on the outer side wall of the socket and matched with the first fastening component. The second fastening element, such as a buckle groove or a buckle body, can be engaged in two phases. [Embodiment] The foregoing and other technical contents, features and effects of the present invention will be apparent from the detailed description of the embodiments of the present invention. 3 is a cross-sectional view showing a needle safety double eye according to an embodiment of the present invention, and showing an exploded view of the needle and the needle portion of a syringe, and FIGS. 4 and 5 are diagrams showing the needle. The exploded view of the safety double sleeves respectively from the direction of the side wall and the second side wall of the pipe body; Fig. 6 is a schematic view showing the combined appearance of the full female double casing of the head pin 201119703. Eight eyes t read Fig. 3 shows a needle according to an embodiment of the present invention, the same set of needles and the same palladium in the needle barrel of the conventional safety syringe and the needle = 〇 'the needle barrel and the needle have The same construction as the conventional one. That is, the syringe °M00 includes a cylinder 410 and a piston rod 420; the cylinder 410 has opposite ends: a first end 411 and a second end 412, the second end has a screw hole 413; The end 411 is fitted to the inside of the cylinder 41 (). The needle 500 includes a needle body 51G and a needle holder (10) for supporting the needle body; the outer circumference of the needle seat (10) is provided with a plurality of outer protrusions 521 protruding outward, and an opposite side of the end of the needle holder 52〇 The pair of opposing tabs 522 are provided, and the pair of tabs can be screwed into the screw holes 413 of the barrel portion 4A as external screws, and are integrated with the barrel portion. Referring to Figures 3 to 6, a needle safety double cannula 100 according to an embodiment of the present invention includes an inner cannula 2 and a set of outer cannula 300 overlying the outer circumference of the inner cannula. . The φ inner sleeve 200 includes a stem 210 and a tubular body 220 connected to one side. In detail, the stem 210 is placed on the outer circumference of the needle hub 52〇 of the needle 5〇〇, and the inner wall of the seat 210 has a plurality of inner protrusions 211 (see the figure), which are external to the needle 500. The protrusions 521 are matched. The tubular body 220 has an opposite end 221 and a mouth end 222 along its length, wherein the open end 222 is adjacent to the stem 210; the tubular body 220 has an opposite first sidewall 223 and a circumferential direction thereof. The second sidewall 224, wherein the first sidewall 223 is coupled to the stem 210 by a joint portion 225, and the second sidewall 224 of the tubular body 22 is provided with a length along the length of the tubular body 22 from the open end 221 thereof. A first slit 226 of 201119703 is extended. 300 sets of jackets cover the outer circumference of the inner casing 2〇〇. A side wall of the outer sleeve 3 is provided with a second slit extending along the length of the outer sleeve, which can be adjusted to be aligned or offset with the first slit 226 of the inner sleeve 2A. When the second slit 310 is aligned with the first slit 226, a pipe for the needle 500 is provided; when the second slit 31 is misaligned with the first slit, the needle 500 can be covered. In the double sleeve formed by the inner and outer sleeves, the outer side wall of the sealing end 222 of the body 120 is provided with at least one backing body 227, which is reversed after the outer sleeve 300 is sheathed on the outer circumference of the inner sleeve 2〇〇. The stopper body 227 prevents the outer sleeve 3 from coming off the sealing end 222 of the tube body 220. The field is disposed along the length of the first side wall 223 of the tubular body 220, and a fastening unit is disposed between the outer side wall of the outer sleeve 300 and the outer side wall of the tube seat 21, so that the outer sleeve 300 and the tube body 220 can be The joint portion 225 is turned outward for the shaft, and is then engaged with the body 210 to maintain the outer sleeve 3〇〇φ and the tubular body 22〇 open during use. In an implementation, the fastening unit 230 includes a first fastening component 231 ′ disposed on the outer side wall of the outer sleeve 3 与 and a side wall disposed on the outer side of the socket 21 并 and matched with the fastening component 231 . Second fastening element 232. The first fastening component 231 is, for example, a buckle body or a buckle groove, and the second fastening component 232 is correspondingly a buckle groove or a buckle body. Figure 7 is a schematic view showing the operation of removing or inserting the needle into the safety double sleeve; Fig. 8 is a view showing the needle safety double sleeve when the safety double sleeve is engaged and positioned by using the needle. Fig. 9 is a sectional view showing the combination of a safety double sleeve and a needle and a syringe portion, and showing a state in which the inner sleeve is aligned with the slit of the outer sleeve. Please refer to Fig. 7 to Fig. 9 together. When the medical person's needle 500 is injected, first move the outer sleeve 3_ to the tube body part, and rotate the coat 3GG' to make the outer sleeve 300 open second. The slit 31 is aligned with the first slit 226 of the inner body 22 of the inner sleeve g 200 (as shown in FIG. 9); thus, the body 220 and the outer sleeve 300 are pivoted outward by the joint portion 225. The needle body 51 of the needle 500 is exposed to the second slit 310 along the first slit (as shown in FIG. 7); the tube body 22 and the outer sleeve 300 are continuously turned over. 'The first fastening element 231 provided in the outer casing period is engaged with the second fastening element 232 of the socket 210, and is positioned such that the needle body 51 of the needle 500 is completely exposed to the outside (eg, At the same time, in this case, the needle body 510 can be engaged with the pushing action of the piston rod 420 to suck up the liquid medicine and the main injection liquid. Figure 10 is a cross-sectional view showing the combination of a safety double cannula and a needle and a syringe portion, and showing a cancer in which the slits of the inner cannula and the outer casing # are misaligned, and Fig. 11 is a view along the first A cross-sectional view taken on line A_A of the figure; Fig. 12 is a schematic view showing the use of a needle-safe double sleeve to unscrew the needle from the barrel portion and integrated with the needle. Please refer to Fig. 10 to Fig. 12 together. When the medical staff inserts the needle body 510 of the needle 500 into the patient and the injection is completed, the needle 500 is placed on the needle safety double sleeve 1〇. In the case of 〇, the operation sequence may be reversed, that is, the snap-fit relationship between the outer sleeve 300 and the stem 21〇 is released, and the outer sleeve 300 and the tubular body 220 are returned to the flat shape with the joint portion 225 as an axis. The 201119703 state is such that the first slit 226 and the second slit 310, which are aligned with the needle body 510 from the top to the bottom in the cross-sectional direction by the needle safety double sleeve 100, are laterally inserted into the needle safety double sleeve 1 The inside of the crucible; afterwards, the outer sleeve 300' is rotated such that the second slit 310 is misaligned with the first slit 226 of the tubular body 220 to cover the first slit 226' to prevent the remaining portion of the needle 51 The liquid medicine flows out from the first slit 226, and the outer sleeve 3 is further pushed to cover the socket 210 and the tube body 220 of the inner sleeve 200 at the same time, and covers the joint portion 225 and the open end 221 to prevent the tube from being closed. The body 220 is flipped along its joint portion 225 and the open end 221 (as shown in Figure 1); then the needle is safely doubled The sleeve 1〇〇, that is, the inner protrusion 211 of the needle 500 can rotate the outer protrusion 521 of the needle 500 (as shown in FIG. u), so that the needle 500 is rotated together and is rotated out from the barrel portion 4 (eg, Figure 12) and integrated with the needle female full double sleeve 100 sets are considered as contaminant treatment: the syringe part 400 that is not in contact with the patient can be treated separately or recycled. The first slit 226 and The width of the second slit 310 is only slightly larger than the thickness of the needle body 510 'its width is small' so that the user's fingers cannot contact the needle body through the slit to ensure the safety of the user. According to an embodiment of the present invention, a needle-safe double cannula, when the needle is placed, the needle 5〇〇 is not inserted straight into the needle-safe double cannula 100 along its length, that is, the tip of the needle 5〇〇 The user's hand is not aligned along the direction of the inserted force; the direction of the cross-section along the needle 510 is downward: the slit of the needle-safe double-tube 1〇〇 is placed laterally on the needle The interior of An Wang double sets the official 100. Therefore, it is possible to avoid the danger that the tip of the needle 51 is straight into the hand of the user such as a medical staff to avoid infection. In addition, in 201119703, after the needle 500 is placed, the needle safety double sleeve 100 has two slits which are dislocated, so that the liquid remaining in the needle body 510 can be prevented from flowing out from the first slit 226; further, when used, the needle is safe. The double cannula 100 is always fitted with the needle 500, and there is no omission. Its safety and applicability are good. The present invention is disclosed in the above embodiments, and is not intended to limit the scope of the present invention, and various modifications and refinements may be made without departing from the spirit and scope of the invention. It is subject to the definition of the scope of the patent application attached. BRIEF DESCRIPTION OF THE DRAWINGS In order to make the above and other objects, features, advantages and embodiments of the present invention more obvious, the description of the drawings is as follows: FIG. 1 is a combination of a conventional safety syringe. Figure. Fig. 2 is an exploded view showing the conventional safety syringe shown in Fig. 1. Fig. 3 is an exploded perspective view showing the needle safety double sleeve according to an embodiment of the present invention, and showing an exploded view of the needle and the needle portion of a syringe. Fig. 4 is an exploded perspective view showing the needle safety double sleeve shown in Fig. 3 as viewed from the direction of the first side wall of the tubular body. Fig. 5 is an exploded perspective view showing the needle safety double sleeve shown in Fig. 3 in the direction of the second side wall of the tubular body. Fig. 6 is a schematic view showing the combined appearance of a needle safety double sleeve according to an embodiment of the present invention. Figure 7 is a schematic illustration of the operation of the needle safety double 11 201119703 cannula for removing or placing the needle into the safety double cannula in accordance with an embodiment of the present invention. Fig. 8 is a schematic view showing the operation of the safety double sleeve in the state of using the needle in the state of using the needle in accordance with an embodiment of the present invention. Fig. 9 is a cross-sectional view showing the combination of the needle safety double sleeve and the needle and the syringe portion according to an embodiment of the present invention, and showing a state in which the slits of the inner sleeve and the outer sleeve are aligned with each other. Fig. 10 is a cross-sectional view showing the combination of the needle safety double sleeve and the needle and the syringe portion according to an embodiment of the present invention, and showing a state in which the slits of the inner sleeve and the outer sleeve are displaced from each other. Figure 11 is a cross-sectional view taken along line A-A of Figure 10. Fig. 12 is a view showing the use of a needle-safe double cannula according to an embodiment of the present invention to unscrew the needle from the barrel portion and integrate it with the needle. [Main component symbol description] 100: Needle safety double sleeve 210: Tube holder 220: Tube body 222: Sealing end 224: Second side wall 226: First slit 230: Fastening unit 200: Inner sleeve 211: Inner protrusion Body 221 : Open end 223 : First side wall 225 : Joint portion 227 : Reverse stop body 231 : First fastening element 12 201119703 232 Second fastening element 300 : Outer sleeve 310 Second slit 400 : Needle portion 410 Cylinder 411: First end 412 - a Mountain brother exhausted 413 : Screw hole 420 Piston rod 500 : Needle head 510 Needle body 520 : Needle seat 521 Outer protrusion 522 : Tab
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