M383416 五、新型說明： 【新型所屬之技術領域】 本新型關於一套管裝置，特別是關於一種針頭之安全 雙套管裝置。 【先前技術】 針筒是將藥液、血液或營養液等液狀物f注射於病人 體内所使用的-種器具。其係藉由針頭插人於病人體内， 再利用針筒内之活塞的推力，將健存於針筒内的上述液體 經由針頭輸入於病人體内。 由於使用時，針筒的針頭係插入於病人的體内，因此 :筒於使时，其針頭即沾附有病人的讀。為避免吾人 遭受病人的意外感染，必須將使用過後的針頭予以安全處 理’以防止任何人的接觸。 ^此，乃有所謂安全針筒的結構，其主要是將使用過M383416 V. New description: [New technical field] The present invention relates to a casing device, in particular to a safety double casing device for a needle. [Prior Art] A syringe is an instrument used to inject a liquid f such as a drug solution, blood or a nutrient solution into a patient. The needle is inserted into the patient's body, and the liquid stored in the syringe is introduced into the patient via the needle by the thrust of the piston in the syringe. Since the needle of the syringe is inserted into the patient's body during use, the needle is attached to the patient's reading when the cartridge is in use. In order to avoid accidental infection of the patient, the used needle must be safely treated to prevent contact by anyone. ^This is the structure of the so-called safety syringe, which will be used mainly.
^的針頭予以收藏或折斷在—容H内，避免任何人的接 觸，以避免感染。 第目及第2圖疋繪不習知一種安全針筒的結構，其 中第1圖為其組合圖，第2圖為其分解圖。 圖所示％知女全針筒包括有一針筒部繼、一針 = 500與-針頭套管繼。針筒部彻包含有—筒體剔 與一活塞桿420 ;筒體410且士上， 第二端4U，其中第-端呈有有相對的—第一端411與一 由第一端4U塞合於筒體41〇的内部。針頭秦包含有一 3 M383416 針體510與一支承該針體的針座520 ;針座520的外周設 有向外突出的多數外突體521 ’且針座520的端部的一相 對側部設有一相對突片522，能以該對突片522作為外螺 體旋入於針筒部400的螺孔413而與針筒部結合為一體。 針頭套管600具有一管體610，其具有相對一開口端611 與一封口端612,且管體610於鄰近開口端611的部位設 有向管體内部突出的多數内突體（未圖示），針頭500由開 口端611套置於針頭套管600的内部，使得針頭套管600 修 相對套覆於針頭500的外部，用以遮覆針頭500。 使用時，係將針頭套管600取下，以顯露針頭500， 即可以針頭500及活塞桿420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600套覆於針 頭5〇〇外部，並旋轉該針頭套管；此時，針頭套管600即 可以其内突體帶動針頭500的外突體521旋轉，使得針頭 500被一併旋轉而自針筒部400旋出，並與針頭套管600 鲁套合為一體而被視為污染物處理。未接觸到病人的針筒部 400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 用時有如下缺憾。即：當針筒注射完成後而醫護人員欲將 針頭500套置於針頭套管6〇〇時，其針頭500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 的括置動作，有可能因不慎或意外的推碰等因素’使得針 4 M383416 5l〇的尖端沿其長度方向順勢刺入於醫護人員的手 而造成醫護人員等使用者意外的絲。因此，就習知 女全針筒之針頭套官的結構及使用而纟，實有加以改 必要。 【新型内容】 一針對上述習知安全針筒之針頭套管的缺點，本新型之 目的在於提供一種針頭安全雙.总 的針頭意外地刺入於使用者。套吕裝置，用以避免針筒 置 Ϊ = 的在於提供一種針頭安全雙套管裝 了避免針體殘留的藥液流出。 置 $新，再一目的在於提供—種針頭安全 :據=始終與針頭套合在-起，無遺漏之虞 根據上述之目的，本新型之_態 安全雙套管裝置’用於套覆於 在&供種針頭 雙套管裝置包括有相套合的管 备該針頭安全 包含有一管座與-管體，管座:内套=内套管 體沿其長度方向具有相對的一第一端盘=數^^管 -端鄰向管座，且管體沿其圓周方向且有相第一:一’，中第 壁與一第二側壁，管體的第一侧壁以一.的第一側 結，管體的第二側壁則自第一端開始設=:=相連 方縫。外套管具有相對的-開； 滑動’以遮覆或敵開内套管的：=長度方向 田外套官向外滑動拉 5 M383416 伸時，内套管的開縫未被遮覆而呈敞開狀態，依此提供一 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，·當外套管向内滑動縮合時，内套管的開 縫被外套管所遮覆，則可將針頭遮覆於由内、外套管所構 成的雙套管裝置内，避免針頭殘留的藥液由其開縫流出。 根據本新型的一實施例，管體之第二端的外側壁設有 至少一逆止擋體，外套管之開口端的内 防止外套管自管體的第二端脫落。 犬緣 根據本新型的一實施例，管座的外侧壁設有至少一卡 2;當將外套管向内滑動縮合至其内突緣通過卡凸時，内 突緣與卡凸相互卡合，而維持外套管向⑽合於内套管的 狀態，而穩定地遮覆内套管的開縫。 根據本新型的-實施例，在沿著第一側壁的長度方向 上’於外套管的外侧壁與管座的外側壁之間設有一扣合單 元，使得外套管及管體可以其連結部為轴而外翻，並二之 與管體相互扣合，以在使料保持外套管及管體敞 態。 根據本新型的一實施例，扣合單元包含有設於外套管 之外侧壁的-第一扣合元件例如扣體或扣槽 之外侧壁並與第一扣合元件相配應的一第二扣合元件例 如扣槽或扣體，而可兩相扣合。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 6 M383416 以下配合參考圖式的實施例詳細說明當中，將可清楚的呈 ' 現。 第3圖是繪示依照本新型一實施方式之針頭安全雙 套管裝置的分解圖，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裝置分別 由管體之第一側壁及第二側壁方向所視的分解圖；第6圖 ' 是繪示針頭安全雙套管裝置的組合外觀示意圖。 請參閱第3圖所示，依照本新型一實施方式之針頭安 • 全雙套管裝置同樣實施於習知安全針筒的針筒部400與針 頭500，該些針筒部與針頭具有與習知相同的構造。即： 針筒部400包含有一筒體410與一活塞桿420;筒體410具有 相對的一第一端411與一第二端412,其中第二端具有一螺 孔413;活塞桿420由第一端411塞合於筒體410的内部。針 頭500包含有一針體510與一支承該針體的針座520 ;針座 520的外周設有向外突出的多數外突體521，且針座520的 端部的一相對側部設有一相對突片522,能以該對突片522 ®· 作為外螺體旋入於針筒部4 0 0的螺孔413，而與針筒部結合 為一體。 請參閱第3圖至第6圖所示，依照本新型一實施方式的 針頭安全雙套管裝置100包括有一内套管200與一滑動套 覆於該内套管外周的外套管300。 内套管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500之針座520的外周 ，且管座210的内壁具有多數内突體211(請參閱第13圖） 7 M383416 ，其與針頭500的外突體521相配應。管體220沿其長度方 • 向具有相對的一第一端221與一第二端222,其中第一端 221係鄰向管座210 ;管體220沿其圓周方向則具有相對的 一第一側壁223與一第二侧壁224，其中第一侧壁223以一 連結部225與管座210相連結，而管體220的第二侧壁224 則自其第一端221開始設有一沿著管體220長度方向延伸 的一開缝226。 . 外套管300滑動套覆於内套管200的外周。外套管300 # 具有相對的一開口端310與一封口端320 ,外套管300以其 開口端310套覆於内套管200外周，並可沿著内套管2〇〇的 長度方向伸縮滑動，以遮覆或敞開内套管2〇〇的開縫226 。亦即，當外套管3〇〇向外滑動拉伸時，内套管2〇〇的開縫 226未被遮覆而呈敞開狀態，依此提供一供針頭套置的 官道；當外套管300向内滑動縮合時，内套管2〇〇的開缝226 被外套管300所遮覆，則可將針頭500遮覆於由内、外套管 ^ 所構成的雙套管裝置内。 管體220之第二端222的外側壁設有多數逆止擋體227 ’而外套管300之開口端310的内避設有一内突緣3n，在 外套管300套覆於内套管200的外周之後，當將外套管3〇〇 向外滑動拉伸至盡頭時，逆止擋體227阻擋外套管300的内 犬緣311，而可防止外套管300自管體220的第二端222脫落 • 。另外’管座210的外側壁設有多數卡凸212，當將外套管 —300向内滑動縮合至其内突緣311通過該些卡凸212時，内 突緣311與卡凸212相互卡合，而維持外套管3〇〇向内縮合 8 M383416 於内套管200的狀態，亦即能穩定地遮覆内套管200的開縫 ' 226。 在沿著管體220第一侧壁223的長度方向上，於外套管 300的外侧壁與管座210的外側壁之間設有一扣合單元230 使得外套管300及管體220可以其連結部225為軸而外翻， 並繼之與管座210相互扣合，以在使用時保持外套管300 • 及管體220敞開的狀態。 • 在實施上，扣合單元230包含有設於外套管300之外側 φ 壁的一第一扣合元件231，與設於管座210之外侧壁並與第 一扣合元件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裝置 内的操作示意圖；第8圖是繪示針頭安全雙套管裝置於使 用針頭狀態下而將該安全雙套管裝置扣合定位時的操作 示意圖；第9圖是繪示安全雙套管裝置與針頭及針筒部的 組合剖視圖，並顯示其中之外套管向外滑動拉伸，使得内 套管的開縫未被遮覆而呈現敞開的狀態；第10圖是繪示 第9圖所示安全雙套管裝置其中Α部的放大圖。 請一併參閱第7圖至第10圖所示，當醫護人員欲使用 針頭500注射時，首先將外套管300向外滑動拉伸，以敞開 - 内套管200的開縫226(如第9圖所示）；此時，管體220及外 套管300即得以連結部225為軸外翻，使得針頭500的針體 510相對地沿著開縫226而外露（如第7圖所示）；繼續將管 9 M383416 體220及外套管300外翻，並將外套管300向内滑動，且以 外套管300所設的第一扣合元件231與管座210的第二扣合 疋件232相扣合而定位，且相對使得針頭5〇〇的針體510完 全突露於外部（如第8圖所示），此時，即可以針體51〇配合 活塞桿420的抽推動作，以吸取藥液及注射藥液。 第11圖是繪示將安全雙套管裝置其中之外套管向内 滑動縮合於内套管的操作示意圖；第12圖是繪示安全雙 套管裝置與針頭及針筒部的組合剖視圖，並顯示其中之外 套管向内縮合於内套管而將内套管的開縫予以遮覆的狀 態；第13圖是繪示沿第12圖之B_B線所取的剖視圖；第 14圖是繪示利用針頭安全雙套管裝置將針頭自針筒部旋 出’並與針頭套合為一體的示意圖。 叫一併參閱第第11圖至第14圖所示，當醫護人員以針 頭500的針體51G插人於病人體内並注射完成後，而欲將針 頭5〇〇套置於針頭安全雙套管裝置i晴，係相反於上述操 作順序即可，即：首先解除外套管_與管座训的扣合關 係’並將外套管_及管體22()以連結部挪為軸回復成平 直狀態，且將外套管3GG向外滑動拉伸，以完全敞開開縫 =6’使得針體5_對地沿其橫戴面方向由上向下由内套 g 200的開縫226橫向鑲置人於針頭安全雙套管裝置1〇〇的 内部；之後，將外套管300向内縮合於内套管2〇〇,並使兩 者的内突緣3U及卡凸212相卡，以維持外套管細的縮合 狀態’而且外套管3〇〇同時套覆内套管删的管座及管 體22〇 ’並遮覆連結部225及第一端221，防止管體挪沿其 M383416 ' 連結部225及第一端221翻轉（如第12圖所示），在此時，外 • 套管同時也將内套管200的開缝226予以遮覆，而防止針體 510殘餘的藥液自開縫226流出；隨後旋轉針頭安全雙套管 裝置100，即可以其内突體211帶動針頭500的外突體521( 如第13圖所示）旋轉，使得針頭500被一併旋轉而自針筒部 400旋出（如第14圖所示），並與針頭安全雙套管裝置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。 p 開縫226的寬度係僅略大於針體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。 依照本新型一實施方式之針頭安全雙套管裝置，其於 套置針頭時，針頭500並非沿其長度方向直向插置於針頭 安全雙套管裝置100，亦即，其針頭500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 面方向由上向下而由針頭安全雙套管裝置100的開縫橫向 鑲置於針頭安全雙套管裝置100的内部，因此能避免針體 510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，在套置針頭500後，針頭安全雙套 管裝置100具有外套管為套覆於内套管的外周，可避免針 體510殘留的藥液自開縫226流出；再者，在使用時，針頭 - 安全雙套管裝置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。 雖然本新型以實施方式揭露如上，然其並非用以限定 M383416 型二任何熟習此技藝者，在不脫離本新型的精神和範 可作各種的更動與潤飾，因此本新型之保護範圍 虽視後附的申請專利範圍所界定者為準。 【圖式簡單說明】 &為讓本新型之上述和其他目的、特徵、優點與實施例 月b更明確易懂，所附圖式之說明如下： 第1圖是繪示習知-種安全針筒的組合圖。 第2圖是緣示第1圖所示習知安全針筒的分解圖。 第3圖是㈣錢本新型—實施方式之針頭安全錐 置的分解圖’並顯示其與—針筒之針頭及針筒部： ㈣是繪示第3圖所示之針頭安全雙套管裝置由管 體第一側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裝置由管 體第一側壁方向所視的分解圖。 …第6 ®是繪示依照本新型—實施方式之針頭安全雙 套管裝置的組合外觀示意圖。 又 第7圖是繪示依照本新型—實施方式之針頭安 套管f置於將針頭取出或置入於安全雙套管裝置内的操 作不意圖。 第8圖疋繪不依照本新型—實施方式之針頭安全雔 套管裝置於使用針頭狀態下而將該安全雙套管裝置扣^ 定位時的操作示意圖。 σ 12 MJ5J4I0 MU面圖是繪示依照本新型一實施方式之安全雙套管 裝置與針頭及針筒部的組合剖視圖並顯 = =滑動拉伸，使得内套管的開縫未被遮覆:呈現敞2 的放^0。圖是繪示第9圖所示安全雙套管裝置其h部 穿置中圖是緣示依照本新型一實施方式之安全雙套管 圖。之外套管向内滑動縮合於内套管的操作示意 :二2圖是繪示依照本新型—實施方式之 裝置與針頭及針筒料組合魏圖麵亍 向内縮合於内套管而將内套管的開縫覆套官 第13圖是繪干，、凡笛η θ 遲覆的狀態。 第Β線所取的剖視圖。 用依照本新型—實施方式之針頭安 的;^裝置將針頭自針筒部旋出，並與針頭套合為一體 【主要元件符號說明】 100·針頭安全雙套管裝 置200 210 :管座 211 212 :卡凸 220 221 ·第一端 222 223 .第一側壁 224 225 :連結部 226 ： 内套管 内突體 管體 第二端 第二側壁 開缝 M383416 227 :逆止擋體 230 = • 231 :第一扣合元件 232 300 :外套管 310 311 :内突緣 320 400 :針筒部 410 411 :第一端 412 • 413 :螺孔 420 500 :針頭 510 • 520 :針座 522 :突片 扣合單元 第二扣合元件 開口端 封口端 筒體 第二端 活塞桿 針體 521 :外突體^ The needle is collected or broken in the H, avoiding contact with anyone to avoid infection. The first and second figures illustrate the structure of a safety syringe, the first of which is a combination diagram and the second diagram is an exploded view. The figure shows that the full female syringe includes a syringe, a needle = 500 and a needle cannula. The barrel portion includes a cylinder body and a piston rod 420; the cylinder 410 and the second end 4U, wherein the first end has an opposite first end 411 and a first end 4U It fits inside the cylinder 41〇. The needle Qin includes a 3 M383416 needle body 510 and a needle holder 520 supporting the needle body; the outer circumference of the needle seat 520 is provided with a plurality of outwardly protruding outer protrusions 521 ' and an opposite side portion of the end portion of the needle holder 520 A pair of protruding pieces 522 can be screwed into the screw holes 413 of the barrel portion 400 as the outer screw 522 to be integrated with the barrel portion. The needle cannula 600 has a tube body 610 having a pair of open ends 611 and a mouth end 612, and the tube body 610 is provided with a plurality of inner protrusions protruding toward the inside of the tube body at a portion adjacent to the open end 611 (not shown). The needle 500 is placed inside the needle cannula 600 by the open end 611 such that the needle cannula 600 is relatively overlaid on the outside of the needle 500 for covering the needle 500. In use, the needle cannula 600 is removed to reveal the needle 500, i.e., the needle 500 and the piston rod 420 can be withdrawn to extract or inject the necessary liquid. When the injection is completed, the needle cannula 600 is sleeved on the outside of the needle 5〇〇, and the needle cannula is rotated; at this time, the needle cannula 600 can rotate the outer protrusion 521 of the needle 500 by the inner protrusion thereof. The needle 500 is rotated together and unscrewed from the barrel portion 400, and is integrally fitted with the needle cannula 600 to be regarded as a contaminant treatment. The syringe portion 400 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 drawbacks when used. That is, when the syringe is finished and the medical staff wants to place the needle 500 in the needle cannula 6 ,, the needle 500 is attached to the open end 611 of the needle cannula 6 along the length of the needle 510. Straight into the inside of the needle cannula; however, this bracketing along the length of the needle body 51 may cause the needle 4 M383416 5l〇 due to factors such as inadvertent or accidental pushing. The tip penetrates the hand of the medical staff along its length to cause accidental wire for the medical staff and the like. Therefore, it is necessary to change the structure and use of the needle holder of the female full syringe. [New content] A disadvantage of the needle cannula of the above-mentioned conventional safety syringe, the purpose of the present invention is to provide a needle safety double. The total needle is accidentally penetrated into the user. The setting of the device is to avoid the need for the syringe to be placed. The needle-safe double-tube is provided to prevent the leakage of the drug solution from the needle. Putting a new one, another purpose is to provide a kind of needle safety: according to the fact that the needle is always in the same position as the needle sleeve, and there is no omission. According to the above purpose, the new type of safety double-sleeve device is used for covering In the & needle needle double cannula device comprising a phased tube preparation, the needle head comprises a tube seat and a tube body, the tube seat: the inner sleeve = the inner sleeve body has a relative first along its length direction The end plate=the number ^^ tube-end is adjacent to the tube seat, and the tube body is along its circumferential direction and has a phase first: a ', a middle wall and a second side wall, and the first side wall of the tube body is The first side knot, the second side wall of the tube body is set from the first end =: = connected square seam. The outer sleeve has an opposite-opening; sliding 'to cover or enemies the inner sleeve:=the length direction of the outer jacket is sliding outwardly. 5 M383416 When the extension is extended, the slit of the inner sleeve is uncovered and open. According to this, a pipe for the needle of the needle tube is arranged vertically and horizontally to avoid the danger that the needle penetrates directly into the hand of the user. When the outer sleeve slides inwardly to condense, the slit of the inner sleeve is covered by the outer sleeve. Covering, the needle can be covered in the double-sleeve device consisting of the inner and outer sleeves to prevent the residual liquid of the needle from flowing out of the slit. According to an embodiment of the present invention, the outer side wall of the second end of the tubular body is provided with at least one reverse stop body, and the inner end of the outer sleeve prevents the outer sleeve from falling off from the second end of the tubular body. According to an embodiment of the present invention, the outer side wall of the tube seat is provided with at least one card 2; when the outer sleeve is slid inwardly condensed until the inner flange passes through the card protrusion, the inner flange and the card protrusion are engaged with each other. While maintaining the outer sleeve (10) in the state of the inner sleeve, the slit of the inner sleeve is stably covered. According to the embodiment of the present invention, a fastening unit 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 at the joint portion thereof. The shaft is turned outwards, and the two are engaged with the pipe body to keep the outer casing and the pipe body open. According to an embodiment of the present invention, the fastening unit includes a second fastening component disposed on the outer side wall of the outer sleeve, such as a side wall of the buckle body or the buckle body and a second buckle corresponding to the first fastening component. The components such as the buckle groove or the buckle body can be engaged in two phases. [Embodiment] The foregoing and other technical contents, features, and effects of the present invention will be clearly described in the following detailed description of the embodiment of the present invention with reference to the reference drawings. 3 is an exploded view of the needle safety double cannula device according to an embodiment of the present invention, and shows an exploded view of the needle and the needle portion of a syringe; FIGS. 4 and 5 are diagrams The needle-safe double-sleeve device is respectively an exploded view as seen from the direction of the first side wall and the second side wall of the pipe body; FIG. 6 is a schematic view showing the combined appearance of the needle-safe double-sleeve device. Referring to FIG. 3, a needle-and-full double-cannula device according to an embodiment of the present invention is also implemented in a syringe portion 400 and a needle 500 of a conventional safety syringe, and the needle portion and the needle have Know the same structure. That is, the syringe portion 400 includes a cylinder 410 and a piston rod 420; the cylinder 410 has a first end 411 and a second end 412, wherein the second end has a screw hole 413; the piston rod 420 is One end 411 is fitted to the inside of the cylinder 410. The needle 500 includes a needle body 510 and a needle holder 520 supporting the needle body; the outer circumference of the needle holder 520 is provided with a plurality of outer protrusions 521 protruding outward, and an opposite side of the end portion of the needle holder 520 is provided with a relative The protruding piece 522 can be screwed into the screw hole 413 of the barrel portion 400 by the pair of protruding pieces 522 ® · and can be integrated with the barrel portion. Referring to Figures 3 through 6, a needle safety double cannula device 100 in accordance with an embodiment of the present invention includes an inner cannula 200 and an outer cannula 300 that is slidably over the outer circumference of the inner cannula. The inner sleeve 200 includes a tube seat 210 and a tube body 220 connected to one side. In detail, the stem 210 is placed over the outer circumference of the hub 520 of the needle 500, and the inner wall of the stem 210 has a plurality of inner protrusions 211 (see Fig. 13) 7 M383416, which is external to the needle 500. 521 should match. The tubular body 220 has an opposite first end 221 and a second end 222 along the length thereof, wherein the first end 221 is adjacent to the stem 210; the tubular body 220 has a first one along the circumferential direction thereof. The sidewall 223 and 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 220 is provided along the first end 221 thereof. A slit 226 extending in the longitudinal direction of the tubular body 220. The outer sleeve 300 is slidably overlaid on the outer circumference of the inner sleeve 200. The outer sleeve 300 # has an opposite open end 310 and a flat end 320. The outer sleeve 300 is sleeved on the outer circumference of the inner sleeve 200 with its open end 310, and can extend and slide along the length of the inner sleeve 2〇〇. To cover or open the slit 226 of the inner sleeve 2〇〇. That is, when the outer sleeve 3 is slid outwardly, the slit 226 of the inner sleeve 2 is uncovered and opened, thereby providing a guide for the needle to be placed; When the 300 is inwardly slidably condensed, the slit 226 of the inner sleeve 2 is covered by the outer sleeve 300, and the needle 500 can be covered in the double cannula device composed of the inner and outer sleeves. The outer side wall of the second end 222 of the tubular body 220 is provided with a plurality of reverse stoppers 227', and the inner end of the open end 310 of the outer sleeve 300 avoids an inner flange 3n, and the outer sleeve 300 is sleeved on the inner sleeve 200. After the outer circumference, when the outer sleeve 3 is slid outwardly to the end, the reverse stop body 227 blocks the inner dog 311 of the outer sleeve 300, and the outer sleeve 300 is prevented from coming off the second end 222 of the tube 220. • . In addition, the outer side wall of the stem 210 is provided with a plurality of clips 212. When the outer sleeves 300 are slid inwardly condensed until the inner flanges 311 pass through the tabs 212, the inner flanges 311 and the tabs 212 are engaged with each other. While maintaining the outer sleeve 3〇〇 inwardly condensing 8 M383416 in the state of the inner sleeve 200, the slit '226 of the inner sleeve 200 can be stably covered. A fastening unit 230 is disposed between the outer side wall of the outer sleeve 300 and the outer side wall of the stem 210 along the length direction of the first side wall 223 of the tubular body 220 such that the outer sleeve 300 and the tubular body 220 can be connected thereto. The 225 is everted for the shaft and is then engaged with the stem 210 to maintain the outer sleeve 300 and the tubular body 220 open during use. In an implementation, the fastening unit 230 includes a first fastening component 231 disposed on the outer side of the outer sleeve 300 and a first fastening component 231 disposed on the outer sidewall of the header 210 and coupled to the first 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 cannula device; Figure 8 is a view showing the needle safety double cannula device being engaged with the safety double cannula device in the state of using the needle. FIG. 9 is a cross-sectional view showing the combination of the safety double cannula device and the needle and the syringe portion, and showing that the outer sleeve is slidably stretched outward, so that the slit of the inner sleeve is not covered. The open state is shown; Fig. 10 is an enlarged view showing the crotch portion of the safety double-sleeve device shown in Fig. 9. Referring to FIGS. 7 to 10 together, when the medical staff wants to use the needle 500 to inject, the outer sleeve 300 is first slid outwardly to open the slit 226 of the inner sleeve 200 (eg, ninth). The tube body 220 and the outer sleeve 300 are pivoted outwardly so that the needle body 510 of the needle 500 is relatively exposed along the slit 226 (as shown in Fig. 7); The tube 9 M383416 body 220 and the outer sleeve 300 are continuously turned over, and the outer sleeve 300 is slid inward, and the first fastening element 231 of the outer sleeve 300 is coupled with the second fastening element 232 of the socket 210. The needle body 510 of the needle 5 完全 is completely exposed to the outside (as shown in FIG. 8 ), and at this time, the needle body 51 〇 can cooperate with the pushing action of the piston rod 420 to absorb Liquid medicine and injection liquid. Figure 11 is a schematic view showing the operation of sliding the outer sleeve of the safety double-sleeve device into the inner sleeve; FIG. 12 is a sectional view showing the combination of the safety double-tube device and the needle and the needle portion, and A state in which the sleeve is condensed inwardly to the inner sleeve to cover the slit of the inner sleeve is shown; FIG. 13 is a cross-sectional view taken along line B_B of FIG. 12; FIG. 14 is a cross-sectional view A needle-safe double-sleeve device is used to unscrew the needle from the barrel portion and is integrated with the needle sleeve. Referring to Fig. 11 to Fig. 14, when the medical staff inserts the needle 51G of the needle 500 into the patient and the injection is completed, the needle 5 is placed on the needle safety double sleeve. The tube device i is clear, which is the reverse of the above operation sequence, that is, first, the snap relationship between the outer sleeve _ and the tube seat training is released, and the outer sleeve _ and the tube body 22 () are returned to the shaft by the joint portion. Straight state, and the outer sleeve 3GG is slid outwardly to fully open the slit = 6' so that the needle body 5_ is grounded in the lateral direction of the transverse direction from the slit 226 of the inner sleeve g 200 Placed inside the needle safety double cannula device 1; afterwards, the outer sleeve 300 is condensed inwardly into the inner sleeve 2〇〇, and the inner flange 3U and the cam protrusion 212 of the two are stuck to maintain The outer sleeve is in a finely condensed state' and the outer sleeve 3 套 simultaneously covers the inner sleeve and the tube body 22'' and covers the joint portion 225 and the first end 221 to prevent the tube from moving along its M383416' The portion 225 and the first end 221 are inverted (as shown in Fig. 12). At this time, the outer sleeve also covers the slit 226 of the inner sleeve 200. The drug solution preventing the residual body 510 from flowing out from the slit 226; then rotating the needle safety double cannula device 100, that is, the inner protrusion 211 of the needle 500 can rotate the outer protrusion 521 of the needle 500 (as shown in Fig. 13). The needle 500 is rotated together and rotated from the barrel portion 400 (as shown in Fig. 14), and is integrated with the needle safety double cannula device 100 to be treated as a pollutant: no contact with the patient The syringe section -400 can be disposed of separately or recycled. The width of the p slit 226 is only slightly larger than the thickness of the needle body 510, and the width thereof is small, so that the user's finger cannot contact the needle body through the slit to ensure the safety of the user. According to the needle safety double cannula device according to an embodiment of the present invention, when the needle is placed, the needle 500 is not inserted directly along the longitudinal direction thereof into the needle safety double cannula device 100, that is, the tip of the needle 500 is not along The direction of the applied force of the insertion is aligned with the hand of the user; and the direction of the cross section of the needle body 510 is from top to bottom and is placed laterally by the slit of the needle safety double cannula device 100 in the safety double sleeve of the needle. The inside of the tube device 100 can avoid the risk that the tip of the needle body 510 will penetrate straight into the user's hand such as a medical staff to avoid infection. In addition, after the needle 500 is placed, the needle safety double cannula device 100 has an outer sleeve covering the outer circumference of the inner sleeve, so that the liquid medicine remaining in the needle body 510 can be prevented from flowing out from the slit 226; The needle-safe double cannula device 100 is always fitted with the needle 500, and there is no flaw. Its safety and applicability are good. Although the present invention is disclosed in the above embodiments, it is not intended to limit the type of M383416. Anyone skilled in the art can make various modifications and retouchings without departing from the spirit and scope of the present invention. The scope of the patent application is subject to change. BRIEF DESCRIPTION OF THE DRAWINGS In order to make the above and other objects, features, advantages and embodiments of the present invention more clear and easy to understand, the description of the drawings is as follows: FIG. 1 is a diagram showing a conventional safety. A combination of the syringes. Fig. 2 is an exploded view showing the conventional safety syringe shown in Fig. 1. Figure 3 is a (four) exploded view of the needle safety cone of the new type of embodiment - and shows the needle and the needle part of the syringe: (d) is the needle safety double casing device shown in Figure 3 An exploded view 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 cannula device shown in Fig. 3 as viewed from the direction of the first side wall of the tubular body. ... 6th ® is a schematic view showing the combined appearance of the needle safety double cannula device according to the present invention. Further, Fig. 7 is a view showing the operation of the needle hub f according to the present invention to remove or insert the needle into the safety double cannula device. Fig. 8 is a schematic view showing the operation of the needle double-sleeve device in accordance with the present invention, which is not in accordance with the present invention. The σ 12 MJ5J4I0 MU surface view is a sectional view showing the combination of the safety double cannula device and the needle and the syringe portion according to an embodiment of the present invention and the display == sliding stretching, so that the slit of the inner sleeve is not covered: Appears an open 2 of ^0. The figure shows a safety double-sleeve device according to an embodiment of the present invention. The operation of the sleeve sliding inward and condensing to the inner sleeve is shown in Fig. 2: Fig. 2 is a view showing the combination of the device according to the present invention with the needle and the syringe material, and the inward condensation of the inner surface of the sleeve into the inner sleeve The 13th picture of the sleeve of the casing is painted, and the state of the ft θ θ is delayed. A cross-sectional view taken from the second line. The needle is screwed out from the needle tube portion by the needle device according to the present invention, and is integrated with the needle sleeve. [Main component symbol description] 100·Needle safety double cannula device 200 210: Tube seat 211 212: card protrusion 220 221 · first end 222 223. first side wall 224 225: joint portion 226: inner sleeve inner body body second end second side wall slit M383416 227: reverse stop body 230 = • 231 : First fastening element 232 300 : outer sleeve 310 311 : inner flange 320 400 : syringe portion 410 411 : first end 412 • 413 : screw hole 420 500 : needle 510 • 520 : needle holder 522 : tab fastening Unit second fastening component open end sealing end cylinder second end piston rod needle body 521 : outer protrusion