201039877 t. 六、發明說明： 【發明所屬之技術領域】 本發明係有關—種安全注射 種可安全回縮注射針於筒體内，之回縮結構，尤其 <創發明態設計者。 【先前技術】 按，目前市場上的注射器 射針都是不帶有任何安全裝。份皆為傳統式’包 ^易造成藥物及也液污染，力:上/但可以重覆使用’ 〇人員及清潔人員的刺傷，：：：：針之裸露’更造成 上述習知注射器結構所存在=病的流行。是以， 免重覆使用而造成二次污染的、·點b何開發—種 切企盼，亦係相關羋者窄努/射器，實使用消費者 ㈣者4努力研發突破之 有鑑於此，本案發明π及方向 號所揭之「注射針回縮式 第7 2 ◦ 2 4 文'主射器」，盆牿备士》 於-針座之外緣預定位置開設有“色要 概分為橫槽段及縱槽段 乂《該L·形 ，且疴體内部對應針座之L报 設有固定凸點，固定Λ # ^ 丨度惑L形 ，U疋凸點恰配合導滑組入 段及縱槽段；惟，此插羽Λ ^ L形槽之 ... &知、，，〇構型態於實際使用唑驗 現仍存在下述之問題點： 丨（用，，工驗 該習知之安全4 Μh Α 主射器内部主要係單針座 及推桿組成，然而者廡田+ 厘形式搭配 藥液後更換較細小的 手吊在 J的主射針時，因更換注射 射器前端旋轉拆知4 u M t過程裡 锝诉卸主射針所產生的徑向力及 該針座與筒體之密人 袖白力 在口吐及卡合性遭到破壞。 括注 且容 醫護 針對 可避 所殷 Q 3 4 是在 槽係 槽凸 橫槽 中發 筒體 抽取 由注 而令 201039877 - 是以，針對上述習知注射器結構所存在之問題點， 案發明人精益求精，思考如何開發一種 .本 • ^ _ 具理想實用性之 創新結構，實使用消費者所殷切企盼， a办^ 兀係相關業者須砮 力研發犬破之目標及方向。有鑑於此， 、 奴月人本於多年你 事相關產品之製造開發與設計經驗，針 见之目標，姓 加設計與審慎評估後’終得—確具實用性之 明。 【發明内容】 Ο 即，本發明之主要目的，係在提供—種安 回㈣構；其所欲解決之問題點，係針對習知注射針回^ 式安全注射_存在之當應用在可換針式注射針時，常在 抽取樂液後更換較細小的注射針時，以換注 由注射器前端旋轉拆卸注射針所產生的徑向力及裡 而令該針座與筒體之密合 力， 改良突破； 卡口丨生化到破壞問題點加以 包括一筒體、 室一端形成有 口端，該下針 設有折斷處並 卡於下針座或 在於該筒體舆 其中該限轉單 轉座擋止於卡 一相對位置設 L槽狀的開放 内部容 體之開 定區段 密閉嵌 其特徵 單元， 入於限 間的任 包含有 該筒體 位於筒 桿係預 掣端係 連動； 有限轉 以及嵌 筒體之 單元係 而其解決問題之技術特點 上針座、下針座及推桿；其中 開口端，而該上針座係滑動限 座係密閉環組於上針座，該推 一端設有卡掣端，前推時該卡 上針座定&，令三者間得軸向 上針座之間的任一相 元係包含有限轉座及卡擒二 擔面的限轎Η ·里 釋片’另’下針座與 有L形鎖扣單元，該L形鎖扣 4 201039877 . 部及限位部，以及 ，推桿與下針座之 其係包含有旋轉座 _ 以上恰相對緊密交 之各端末分別設有 藉此創新獨特 速導引制動單元， 相對針座之旋轉槽 Q 針座對位，以呈開 針座的快速導引制 藥液殘留，進而使 以及注射針在回縮 【實施方式】 請參閱第1〜 結構之較佳實施例 〇 申請上並不受此結 0 )、上針座（2 ，且於本實施例該 1 )型態；其中 一筒體（1 0 (12)； 一上針座（2 12)，且該上針 及帽蓋（8 0 )， )内部容室 導滑於前述開放部及限位部的導塊；又 間的相對位置設有快速導引制動單元， 及旋轉槽，前述二者間至少包含有三組 錯嚙合的旋爪及卡溝，且各旋爪及卡溝 易於嚙合對位的導斜面； 設計，使本發明藉由L形鎖扣單元及快 而能使推桿之旋轉座能快速對位唾合於 ，俾方便使用者進行下一步環轉推桿及 放回縮注射針模式，且藉由推桿與相對 動單元之緊密嚙合接觸，而能大幅減少 本發明可達到安全、環保品質的提昇， 使用上的便利之實用進步性者。 7圖所示，係本發明安全注射器之回縮 ，惟此等實施例僅供說明之用，在專利 構之限制；而本發明係包括一 、下針座（…*推二0) '主射針（2 1 )係為黏針式注射針（2 如端形成有開口端 0)係限位於筒體A、 Ί體c 1 〇)之開口端（ 座（20)前端勒μ古 、黏-有注射針（2丄） 末k處设有凸環緣并彡能 緣形態的組接端（2 2 5 201039877 )’以及組接端（2 2 )内部形 卡擎槽（24)内端具—穿：卡擎槽（24)，該 該組接端（22)-側套設有〇开心射針（21)，而 一下針座（3 〇 )内設有密閉;2 3 ); 之〇形環衣組於上針座（20) 衣、J3)的容槽（31)，— 通有一組接；谷槽（31)鄰端連 合於上針座〔32)係緊密環嵌套 町厘Q 2 〇 )之組接端（ )可相對密閉緊貼於上針座（2〇、2)/令下…30 Ο201039877 t. VI. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a retractive structure in which a safe injection type can safely retract an injection needle in a cylinder, in particular, a designer of the invention. [Prior Art] According to the current, the syringe needles on the market are all without any safety equipment. All of them are traditional 'packages> easy to cause drugs and liquid pollution, force: on / but can be used repeatedly 'squats and cleaning staff's stab wounds, :::: needle bareness' more caused by the above-mentioned conventional syringe structure Exist = the prevalence of the disease. Therefore, it is necessary to avoid the secondary pollution caused by repeated use, and the development of the point b, the kind of concern, and the related narrower/ejector, the actual use of consumers (four) 4 efforts to develop breakthroughs in view of this, In the invention of the invention, the π and the direction number disclosed in the "Injection Needle Retraction Type 7 2 ◦ 2 4 Text 'Main Projector", the Pot 牿 牿 》 于 于 预定 预定 预定 预定 预定 预定 之外 之外 之外 之外 之外 之外 之外 之外 之外 之外 之外The transverse groove section and the longitudinal groove section 乂 "the L shape, and the L-shaped corresponding to the needle seat inside the body is provided with a fixed bump, the fixed Λ # ^ 丨 degree is L-shaped, and the U疋 convex point is matched with the guide slip group Segments and longitudinal groove segments; however, this insertion feather Λ ^ L-shaped groove... & know,,, 〇 configuration in the actual use of azole test still has the following problems: 丨 (use, work Check the safety of the conventional 4 Μh Α The main body of the main gun is composed of a single needle seat and a push rod. However, when the 庑田+ 厘 form is matched with the liquid, the smaller hand is attached to the main needle of J, and the injection is replaced. During the rotation of the front end of the gun, the radial force generated by the unloading of the main needle during the process of 4 u M t and the white force of the sleeve of the needle seat and the cylinder are in the mouth spit and the fit To the destruction. Included and medical care for the avoidable yin Q 3 4 is in the groove groove convex trough in the barrel extraction by the note 201037877 - Yes, for the above-mentioned conventional syringe structure problems, The inventor of the case is striving for excellence, thinking about how to develop a kind of innovative structure with ideal and practicality. It is really eagerly awaited by consumers, and it is necessary for the relevant industry to develop the goal and direction of the dog. Therefore, the slaves are based on the experience of manufacturing and designing and manufacturing related products for many years. The goal is to see the target, add the design and the prudent evaluation, and finally get the practicality. [Invention] Ο The main object of the present invention is to provide a kind of anaerobic (four) structure; the problem to be solved is to apply to a conventional needle injection type safe injection _ when used in a needle-replaceable injection needle, often When the fine needle is replaced after the liquid is extracted, the radial force generated by the rotation of the needle from the front end of the syringe is changed and the adhesion between the needle seat and the cylinder is improved, and the breakthrough is improved; The biochemical to damage problem includes a cylinder, and one end of the chamber is formed with a mouth end, the lower needle is provided with a broken portion and is stuck to the lower needle seat or is located in the cylinder body, wherein the limit rotation single rotation seat stops at the card relative to The opening section of the open inner volume of the L-shaped position is tightly embedded with the characteristic unit, and any of the inlets of the cylinder is located at the pre-twist end of the cylinder system; the unit of the limited rotation and the embedded body The technical feature of the problem is that the needle seat, the lower needle seat and the push rod; wherein the upper end of the upper needle seat is a sliding ring and the closed loop is set in the upper needle seat, and the push end has a latch end. When pushing forward, the needle seat on the card is set to &, so that any phase between the three axially upper needle holders includes a limited transposition and a card-limited two-faced car. The lower needle seat has an L-shaped locking unit, the L-shaped locking buckle 4 201039877 . The portion and the limiting portion, and the push rod and the lower needle seat thereof comprise a rotating seat _ With this innovative unique speed-guided braking unit, relative to the rotary seat of the needle seat Q The needle holder is aligned to quickly guide the residual liquid of the pharmaceutical solution, and the needle is retracted. [Embodiment] Please refer to the preferred embodiment of the first to the 〇 application. 0), the upper needle seat (2, and in the embodiment 1); one of the cylinders (1 0 (12); an upper needle seat (2 12), and the upper needle and the cap (8 0 The inner chamber is guided by the guide block of the opening portion and the limiting portion; the opposite position is provided with a quick guiding braking unit and a rotating slot, and the at least three sets of misaligned claws are included between the two And the card groove, and each of the claws and the groove is easy to engage the guiding inclined surface; the design enables the invention to quickly align the rotating seat of the push rod by the L-shaped locking unit and fast, 俾It is convenient for the user to carry out the next step of the push rod and the retracting needle mode, and by the close meshing contact between the push rod and the relative moving unit, the safety and environmental quality of the invention can be greatly reduced, and the use is Convenient and practical progress. 7 is a retraction of the safety syringe of the present invention, but the embodiments are for illustrative purposes only, and are limited by the patent structure; and the present invention includes a lower needle holder (...* push 2 0) The needle (2 1 ) is a needle-type needle (2 if the end is formed with an open end 0) and is limited to the open end of the cylinder A and the body c 1 〇) (the front end of the seat (20) is μμ古, sticky - There is an injection needle (2丄) at the end k, with a convex ring edge and a rim edge shape (2 2 5 201039877 )' and the assembly end (2 2 ) internal shape card slot (24) inner end ——wearing: card sump (24), the set of end (22)-side sleeve is provided with 〇 happy shot needle (21), and the lower needle seat (3 〇) is provided with airtight; 2 3 ); The 〇-shaped ring-shaped group is placed in the upper needle seat (20), the groove (31) of the J3), there is a set of joints; the valley groove (31) is joined to the upper needle seat (32). The set terminal ( ) of PCT Q 2 〇) can be relatively tightly attached to the upper needle seat (2〇, 2) / order...30 Ο
G 留於組接槽（q J衣轉，不會使藥液殘 (33)=、2)，而該組接槽（…鄰側設有通孔 U 3 )及通孔（3 3 )外側 座（3 〇 )之外续“ 士的松緣（3 4 ) ’又該下針 筒體（1 〇 ) ;、°又止卸環（3 5 ) ’以密閉導滑於 ，用以密::上4〇)之外環緣預定段套設有膠S (42) 體導滑於筒體（"），且該推桿（4〇)之桿 中空狀（或再加肋條），使推桿（4 ◦)在 ^ :不會產生扭轉變形，而能達到確實的轉動條件 /食杯（4 〇 )後端面設具較大片體形態的調動端（ 3 )且凋動端（4 3 )鄰側偏移配置有同片體形態的 延伸片，（44)，藉由調動端（43)及延伸片（44) '丨緣面俾忐增加手持旋調面積，以利.於使用者方便旋 調該推梓（4 〇 )轉動，又該推桿（4 〇 )對應該下針座 (3 0)之通孔（3 3)位置凸設有提供穿設的卡掣端（ 4 5 ^ 其中卡掣端（45)外環面具有斜錐緣（45 1 ) 田推才干（4 〇 )朝前推進時，利用卡掣端（4 5 )之 斜錐面俾可順利迫緊導入下針座（3 0 )的通1 ( 3 3 ) 6 201039877 ，而該卡掣端（4 卡掣端（4 5 )進 4 5 2 )擋止於下 到推桿（4 0 )、 間彼此呈轴向連動 該筒體（1 0 有限轉單元（5 0 匚形限轉座（5 1 q 轉片（5 2 )，其 佈設於上針座（2 於後端處設有封閉 2 )係環狀佈設於 壁面，當上針座（ 0 )之開口端（1 一插組於筒體（1 2 0 )與筒體（1 Ο 0 )與筒體（1 〇 繼而該下針座 有L形鎖扣單元（丨 包含有一L槽中縱与 限位部（6 2 ) ，a )及限位部（6 2〕 中的縱轴開放部（（ 設於下針座（3 0 ) 前述開放部（6 1 ) 5)另端形成有環肩部（45 入通孔⑴）後得進-步使 針座（3 〇 )之擋緣（3 4 )，進而達 下針座（30)與上針座（2〇)三者 狀態；而本發明之主要特徵在於： )及上針i ( 2 〇 )之間的相對位置嗖 )，且該限轉單元（5 0 )係包含有i )及恰可插置於限轉座（5 1 )内的限 中該限轉座（5 1 、& & )於本實施例係環狀 〇)的外環緣壁面，該限轉座（5丄） 卡擋面（511、 . ，再者該限轉片（5 …）之開口端（1 2 )處内環 '◦)之各限轉座（51)朝筒體（1 别進時，纟限轉座（5丄）恰可一 :各限轉片（52)，令上針座（ ，以呈環轉連動，以及上針座（2 )間的軸向限位； (3〇)及筒體 〇 )的相對位置設 ΰ U ) ’且該L形錯η。-, B a 早 70 ( 6 0 )係 向的開放部（6 1 )及橫徑方向的 乂及恰可"狀導滑於前述開放部（6丄 狀導塊（63);其中該L槽狀 )二）及橫徑限位部（62)係槽狀佈 :外環壁面預定位置，而相對滑組於 及限位部（6 2 )的導塊（6 3 )則 7 201039877 ΟG is left in the joint groove (q J clothes, will not make the liquid residue (33) =, 2), and the set of joints (... adjacent side with through hole U 3 ) and through hole (3 3 ) outside In addition to the seat (3 〇), the "song of the sap (3 4 )" and the lower needle body (1 〇); ° and the stop ring (3 5) 'closed to the sliding guide, used to close: : Upper 4〇) The outer ring edge is provided with a rubber S (42) body guide sliding to the cylinder ("), and the push rod (4〇) rod is hollow (or re-ribbed), so that The push rod (4 ◦) is in the ^: no torsional deformation, but can achieve the exact rotation condition / cup (4 〇), the end face is set with a larger piece of the transfer end (3) and the end (4 3 The adjacent side offset is provided with an extension piece of the same piece shape, (44), and the hand-held rotation area is increased by the transfer end (43) and the extension piece (44). It is convenient to rotate the push (4 〇) rotation, and the push rod (4 〇) is convexly disposed at the position of the through hole (3 3) of the lower needle seat (30) (45) ^ Where the outer end of the 掣 (45) has a beveled edge (45 1 ) when the field pushes (4 〇) forward By using the tapered end face of the card end (4 5 ), it can be smoothly pushed into the lower needle seat (30) through 1 (3 3 ) 6 201039877, and the card end (4 card end (4 5 ) 4 5 2) Blocking the lower push rod (4 0 ), axially interlocking the cylinder with each other (1 0 limited rotation unit (5 0 限-shaped rotation seat (5 1 q rotation piece (5 2 ), It is arranged on the upper needle seat (2 is provided with a closed 2 at the rear end) and is arranged on the wall surface in an annular manner, when the open end of the upper needle seat (0) (1 is inserted into the cylinder body (1 2 0 ) and the cylinder body (1 Ο 0 ) and the cylinder (1 〇 and then the lower needle seat has an L-shaped locking unit (丨 includes an L-slot longitudinal and limiting portion (6 2 ), a) and a limiting portion (6 2) The vertical axis open portion ((located in the lower needle seat (30), the open portion (6 1 ) 5) is formed with a ring shoulder (45 into the through hole (1)), and then the step is made to make the needle seat (3 〇) The retaining edge (3 4 ), thereby reaching the state of the lower needle seat (30) and the upper needle seat (2〇); and the main feature of the present invention is:) and the relative relationship between the upper needle i (2 〇) Position 嗖), and the limit-shifting unit (5 0 ) contains i) and can be inserted into the limit-rotating seat (5 1 ) The limit rotation seat (5 1 , && ) is in the outer ring edge wall surface of the annular cymbal of the embodiment, and the limit rotation seat (5 丄) blocking surface (511, . The limiter (51) of the inner ring '◦' at the open end (1 2) of the limit-rotating piece (5 ...) faces the cylinder (1 when entering, the limit-turning seat (5丄) is exactly one: each Limiting the rotating piece (52), so that the upper needle seat (for the ring rotation linkage, and the axial limit between the upper needle seat (2); (3〇) and the cylinder 〇) relative position is set ΰ U ) ' And the L shape is wrong. -, B a early 70 (60) direction of the open part (6 1) and the transverse direction of the 乂 and the appropriate "sliding" in the aforementioned open part (6-shaped guide block (63); where L The trough shape) and the transverse diameter limiting portion (62) are groove-shaped cloths: the outer ring wall surface is at a predetermined position, and the relative sliding group and the limiting portion (6 2 ) of the guide block (6 3 ) are 7 201039877 Ο
係凸設於筒體（1 〇 )内 此，令導塊（6 3 )得經 (6 1 )的開口端（1 2 推至開放部（6 1 )底邊 方向旋位推至底限，使該 )軸向限制於下針座（3 下針座（3 〇 )達到軸向 進而使下針座（30)與上 筒禮（1 0)之開口端（1 座（3 0)朝l形鎖扣單元 轉·時’該筒體（1 0 )内部 矣下針座（3 〇 )的開放部 )的注射針（2 1 )得連同 )開口端（1 2 )回縮位移 又，推桿（4 0 )及下 有快速導引制動單元，且該 對位嚙合的旋轉座（7 〇 ) 轉槽（7 5 )於本實施例係 部，且該旋轉座（7 〇 )係 槽（7 5 )之相對位置，前 相對緊进、交錯响合的旋爪（ 7 2 )，且各四旋爪（76 2)之各端末分別設有易於 S ) ’用以快速導引其相對 壁相對下針座（3 ◦)位置，藉 由下針座（3 〇 )之縱向開放部 )導滑進入，當導塊（6 3 )滑 後，再進一步朝限位部（6 2 ) 導塊（63)連同該筒體（工〇 〇 )之限位部（6 2 )，亦即該 位於筒體（10)内的目的， 針座（2 〇 )得以穩固限鎖於 2 )處之功能性；反之當下針 (6 0 )之開放部（6 1 )旋 之導塊（6 3 )則會環轉對位 (61) ’俾使上針座（2 〇 下針座（3〇)於筒體（1〇 至筒體（1〇)内部； 針座（3 〇 )之間相對位置設 快速導引制動元係包含有易於 及旋轉槽（75)，其中該旋 設於下針座（30)之末端内 設於推桿（4 〇 )對應該旋轉 述二者之間至少包含有四組个合 7 6 ’ 7 1 )及卡溝（7 7， ，71)及四卡溝（77，γ 嚙合對位的導斜面（73，7 嗜合位置並作二者環轉連動， 藉由該推桿（4 0 ) 之旋轉座（7 0 )與下針座The protrusion is arranged in the cylinder (1 〇), so that the guide block (63) is pushed to the bottom end through the open end of the (6 1 ) (1 2 push to the bottom side of the open part (6 1 ), Limit the axial direction to the lower needle seat (3 lower needle seat (3 〇) reaches the axial direction and then the lower needle seat (30) and the upper end of the upper tube (1 0) (1 seat (30) towards the l When the lock unit is rotated, the injection needle (2 1 ) of the inner portion of the inner (the lower jaw seat (3 〇) of the cylinder (1 0) is retracted and displaced, and the displacement is pushed again. a rod (40) and a quick-guide braking unit, and the counter-engaging rotating seat (7 〇) rotating groove (75) is in the embodiment, and the rotating base (7 〇) is grooved ( 7 5 ) relative position, front relatively tight, staggered knobs ( 7 2 ), and each end of each of the four claws (76 2) is provided with easy S) 'to quickly guide its opposite wall Relative to the lower needle seat (3 ◦) position, guided by the longitudinal opening of the lower needle seat (3 〇), when the guide block (63) slides, further to the limit portion (6 2 ) (63) together with the limit (6 2 ) of the cylinder (work) For the purpose of being located in the cylinder (10), the needle seat (2 〇) can be stably locked to the function of 2); otherwise, when the opening part (6 1 ) of the lower needle (60) is rotated, the guide block (6 3) ) will turn to the opposite position (61) '俾The upper needle seat (2 〇 lower needle seat (3〇) in the cylinder (1〇 to the inside of the cylinder (1〇); the needle seat (3 〇) relative to each other The position setting fast guiding brake element comprises an easy and rotating groove (75), wherein the rotation is arranged at the end of the lower needle seat (30) and the push rod (4 〇) corresponds to the rotation and at least comprises There are four groups of 7 6 ' 7 1 ) and the card ditch (7 7, 71) and the four card ditch (77, γ meshing alignment guide slope (73, 7 incompatibility position and the two are linked together, Rotating seat (70) and lower needle seat by the push rod (40)
8 201039877 :)之旋轉槽（7 5 )的緊密喊合，可消除二者的之間隙進 而減少藥液殘留’以使推桿（4 〇 )前推時該筒體（工 )之内部藥液可幾乎達到完全注射，使注射快完成時，^ ‘桿（4 0 )旋轉座（7 〇 )自動滑順導入下針座（3 〇 的旋轉槽（7 5 );另該快速導弓丨制動單元之旋轉座 0 )及旋轉槽（7 5 )於本實施例係為可正、逆雙向产7 嚙合連動形態，其主要構成方式係該旋 又衣轉 ο 、卡溝（”，⑴及導斜面互為對稱I:呈= 狀佈設者。 逆項％ 藉由上述之結構、組成設計1就本發明 情形請參閱3〜7圖說明如下： 用作動 當使用者在使用該注射器時，該上 先限位於筒體（1 0 )之開口端（i 2 ) ， u )係預 3 0 )係藉由l形鎖扣單元（6 〇 ) 該下針座（ 〇)内並播止於上針座⑴^ 筒體（1 〇 注射推進時，該推桿（40)之卡掣端 干4〇)呈 (4 5 i )係藉由迫入下針座（3 〇 5 )的斜錐緣 待卡掣端（4 5 )進入該通孔（3 3 ):通孔（3 3 )， 5)係全面接觸套合於上針座（2〇)卜該卡掣端（4 以減少藥液殘留，且該卡擎端（4 之卡擎槽（24) 後其環肩部（4 5 2 )係擋止限位：入通孔（3 3 ) 緣（3 4 )，以使推桿（4 〇 )及下座（3 0 )之擋 向連動狀態，且同時當推桿（4 〇 )、座（3 0 )構成軸 喊合於下針座（3 0)之旋轉槽（7:旋：座（70)欲 (7 〇 )之旋爪（7 i )與旋轉槽（· _ ’若該旋轉座 5 )之卡溝（7 7 9 201039877 )未正確對位，藉由旋轉座（7 〇 )之旋 斜面（7 3 )與旋轉槽（7 5 )之旋爪 7 1 )的導 (78)的彼此快速斜面導弓丨功能，而人）之導斜面 6，川可自動旋位導入於所欲交錯：：：：：爪（7 ，72)位置’以利於使用者不需費：：溝（77 推桿（4 0 )之旋轉座（7 〇 ^位嚙合，且該 0)之旋轉槽（75)，而該上針座、：十：（3 …係緊密環喪於下針座（3〇)之 Ο8 201039877 :) The tight rendezvous of the rotating groove (7 5 ) can eliminate the gap between the two and reduce the residual liquid [to make the push rod (4 〇) push forward the internal liquid of the barrel (work) The injection can be almost reached, so that when the injection is completed, the ^' rod (4 0) rotating seat (7 〇) is automatically slid into the lower needle seat (3 旋转 rotation groove (7 5 ); the other quick guide bow brake The rotary seat 0) and the rotary groove (75) of the unit are in the form of positive and reverse bidirectional 7-engagement interlocking, and the main constituent manners thereof are the rotation and the garment, and the groove (", (1) and guide). The slopes are symmetrical to each other I: in the form of = layout. Inverse term % By the above structure, composition design 1 for the present invention, please refer to the description of 3 to 7 as follows: Acting as the user when using the syringe, the upper The first limit is located at the open end (i 2 ) of the cylinder (10), and the u) is pre-3 0) by the l-shaped locking unit (6 〇). The lower needle seat (〇) is suspended in the upper needle seat. (1)^ The cylinder (1 i 干 该 推进 推进 〇 〇 〇 〇 〇 〇 〇 〇 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 The card end (45) enters the through hole (3 3 ): the through hole (3 3 ), 5) is fully contacted with the upper needle seat (2〇) and the card end (4 to reduce the residual liquid And the card engine end (4 card slot (24) and its ring shoulder (4 5 2) is the limit limit: the through hole (3 3 ) edge (3 4 ), so that the push rod (4 〇) and the lower seat (30) are in the interlocking state, and at the same time, when the push rod (4 〇) and the seat (30) constitute the shaft, the rotation groove of the lower needle seat (30) is engaged (7: rotation: The (70) desired (7 〇) claw (7 i ) and the groove (· _ ' if the rotating seat 5 ) of the groove (7 7 9 201039877 ) are not correctly aligned, by rotating the seat (7 〇 The spiral bevel (7 3 ) and the guide (78) of the rotating groove (75) of the claw (7) are mutually inclined to guide the bow, and the guide bevel 6 of the human) is automatically rotated into the guide Desirable:::::claw (7,72) position' to facilitate the user's no need:: groove (77 push rod (4 0) rotating seat (7 〇 ^ position meshing, and the 0) rotation Slot (75), and the upper needle seat,: ten: (3 ... is tightly entangled in the lower needle seat (3 〇))
G ,該推桿"〇)之卡擎端（45)係緊密容座 (20)之卡掣槽（24) 完全注射於外丨 π料"（η可將藥液 =請參㈣5〜6圖所示’當注射後欲回縮注射針 )進入筒體（1 0 )内時，需先手動旋調推桿（4 〇 )，令手部握持於推桿"0 )後端的調動端（4 3 ) 及延伸片（44)㉟轉，藉由旋轉座（7〇)及旋轉槽（ 7 5 )的各斜錐面斜推，而使推桿（4 〇 )之旋轉座〇 〇 )可快速對位並緊密嗔合於下針座（3 〇 )的旋轉槽（ 75) ’當二者緊密嚙合時該旋轉座（7〇)之複數旋爪 (71)即交錯嵌入嚙合於旋轉槽（75)之複數卡溝（ ?7) ’且各旋轉座（7〇)之複數卡溝（72)係嵌卡 嗤合於各旋轉槽（75)之旋爪（76)，前述二者之複 數旋爪（76，7D端末及卡溝（77，72)之間之 所形成的導斜面（7 3，7 8 )亦相對緊密貼合接觸，俾 :減少藥液殘留，使該推桿（4 〇 )可藉由外力轉動而同 '連動下針座（3 〇 )環轉，經外力環轉後而使筒體（1 10 201039877 ΟG, the putter "〇) card engine end (45) is a tight receptacle (20) card slot (24) completely injected into the outer 丨 料 material " (η can be liquid medicine = please refer to (four) 5~ In Figure 6, when you want to retract the needle after injection, you need to manually adjust the putter (4 〇) to hold the hand on the back end of the putter "0). The transfer end (43) and the extension piece (44) 35 are rotated, and the rotary seat of the push rod (4 〇) is tilted by the inclined taper surfaces of the rotary seat (7〇) and the rotary groove (75). 〇) Rotating groove (75) that can be quickly aligned and tightly fitted to the lower needle seat (3 〇) 'When the two are tightly engaged, the plurality of claws (71) of the rotating base (7 〇) are interlaced and engaged a plurality of card grooves (?7) of the rotating groove (75) and a plurality of card grooves (72) of the respective rotating seats (7) are engaged with the claws (76) of the respective rotating grooves (75), the foregoing two The plurality of claws (76, 7D end and the groove (77, 72) formed by the inclined surface (7 3, 7 8) also relatively close contact, 俾: reduce the residual liquid, so that the push The rod (4 〇) can be rotated by external force to 'connect the lower needle seat (3 〇) ring Turn, after the external force is rotated, the cylinder is made (1 10 201039877 Ο
G 6 3 )由原本 換對位於下針 再進一步後縮 4 5 )的環肩 (34)，以 上針座（2 〇 (4 0 )之折 後，再施力折 推桿（4 〇 ) 上針座（2 〇 0 )内之安全 (4 0 )與下 導引制動單元 環轉，因該上 有限轉單元（ 2 2 )與下針 卡組態，以使 產生環轉動作 射接近底限時 導斜面（7 3 7 0 )旋轉嚙 下針座（3 〇 容易牽動上針 易發生注射針 上針座（2 〇 ο)之導塊（ 部（6 2 )轉 ，而使用者可 )之卡掣端（ 3 0 )之擋緣 3 2 )環嵌於 位移，待推桿 體（1 0 )外 圖所示），令 座（3 0 )及 置於筒體（1 另該推桿 ’容易因快速 針座（3 〇 ) 之相對位置設 )之組接端（ 係屬於環狀嵌 針座（2 〇 ) 桿（4 0 )注 7 〇 )會藉由 )之旋轉座（ (75)，當 (3 〇 )亦極 旋轉，進而容 意外，故藉由 對位於下針座 座（3 0 )的 推桿（4 0 ) 部（4 5 2 ) 及下針座（3 )之組接端（ 斷處（4 1 ) 斷該折斷處（ 斷截成二段後 )所點設的注 目的者； 針座（3 〇 ) 的導斜面（7 針座（2 〇 ) 50) ’再藉 座（3 〇 )之 該下針座（3 ，用以防止使 ，該推桿（4 )之導引功能 合於下針座（ )經由對位並 座（2 〇 )及 (2 1 )在人 )與筒體（1 (3 0 )的限位 開放部（6 1 ) ，令推桿（4 0 擋止於下針座（ 0 )之組接槽（ 2 2 )連動後縮 後縮並露出於筒 4 1)(如第7 ，進而達到下針 射針（2 1 )留 在作嚙合對位時 8，7 3 )令下 與筒體（1 0 ) 由上針座（2 0 組接槽（3 2 ) 0 )僅能相對上 用者在推進該推 〇 )之旋轉座（ ，令推桿（4 0 3 0 )之旋轉槽 旋轉，該下針座 注射針（2 1 ) 體内注射轉動之 0 )間的限轉單 11 201039877 元（5 0 )設計，而能有 藉此，本發明藉由L 制動單元，而能使推桿（ 對位嚙合於相對針座之旋 行下一步環轉推桿（4 〇 射針（2 1 )模式，且藉 速導引制動單元之緊密喷 ，進而使本發明可達到安 Ο針（2 1 )在回縮使用上 另外補充說明的是， 5 1 )亦可佈設於筒體（ 緣位置，且該限轉片（5 外壁％緣且相對於筒體（ 0 請參閱第8圖所示， 該黏針式注射器的上針座 Ο對設置的L形鎖扣單元（ 開放部（6 1 )，亦可佈 2 )内壁，並令開放部（ 1 〇)末端’且該導塊（ )之外壁面，俾使用者可 3 )進入L形鎖扣單元（ 再朝限位部（6 2)方向 可達到下針座（3 0 )與 決此問題。 扣單元（6 0 )及快速導引 )之旋轉座（7 〇 )能快速 (7 5 )，俾方便使用者進 針座對位’以呈開放回縮注 桿（4 0 )與相對針座的快 觸，而能大幅減少藥液殘留 1衣保品質的提昇，以及注射 利之實用進步性者。 轉單元（50)的限轉座（ )之開口端（1 2 )内壁環 亦可佈設於上針座（2 0 ) )之限轉座（5 1 )位置者 本發明之第二實施例，其中 〇 )與筒體（1 0 )間所相 )的L槽限位部（6 2 )及 筒體（1 〇 )之開口端（1 )之開口槽端對位於筒體（ )亦可佈設於下針座（3 0 下針座（30)之導塊（6 )之開放部（6 1 )底邊， 至底限呈軸向擋止狀態，而 座（2 〇 )同步軸向限位於 )之目的者。 12 201039877 - 清參閱第9圖所示，其 - 該推桿（4 0 )與下針座（ 動單元的旋轉座（7 0A) 為僅正向或逆向之單向環轉 (70A)及旋轉槽（7 5 轉引導嚙合對位之方式，可 槽（75A)的各旋爪（7 72A)及導斜面（73A 〇 連續環狀佈設者。 請參閱第10〜16圖 針注射器塑態之第四實施例 端内緣壁面設有用以組合可 結部（2 6 A ) ’且連結部 長形伸孔（2 4 A )，其中 有内螺紋區段，以供可換針 (2 1 1 A )螺入該上針座 〇 )内，而該長形伸孔（2 4 射針（2 1A)之迫緊而組 對該伸孔（2 4 A )内緣位 片（36A)，該逆止閥片 A ) —端則設有限制擋緣（ 口（33A)，且該上針座 座（3 〇 A ) 一端的外緣則 座（3 〇 A )相對該組接端 置則設有組接緣（3 4 A ) 係本發明之第三實施例，其中 3 〇 )之間所設的快速導引制 與旋轉槽（7 5 A )形態，可 ^導嗜合對位，所述之旋轉座 )互為正向或逆向之單向環 為該旋轉座（7 〇a)及旋轉 6 八，7 1 A )、卡溝（7 7 A， ’ 7 8 A )為非對稱之模式呈 所示，其係本發明亦可為可換 ’其中該上針座（2〇A)前 換針式注射針（2 1 a )的連 (2 6A)内設有管狀形態之 該連結部（2 6 A )内緣形成 式注射針（2 1 A )之連結端 (20A)之連結部（26a A )外環面亦可供可換針式注 合，而該下針座（3〇八> _ 置剖設有傾斜具彈性的逆止^ (36Α)對應上針座（2〇 3 2 A )’另端則設有開放通 (2 0 A )相對嵌卡組合下在十 設有組接端（2 2 A )，下淦丨 (2 2 A )之内緣嵌卡定位位 ，其中該上針座（2〇a)之 13 201039877 組接端（2 9 Λ、 JA)外套設有〇形環（ 座（2〇A)^m )，且該上針 )外壁環緣面相對筒體（1 〇 A )由战 設有限轉單元 ）内壁環緣面 座（51)係佈設於上針座（2〇幻之夕之限轉 筒體（1 0 A ) 壁5衣緣，且該 ,0 n )之開口端（1 2 Λ )内壁環綾蚪處 (2 0 A )之限 、’ ί應上針座 吸轉槽則佈设有限轉片（5 ?、 之可換針式注射針主，本實施例 町对主要係藉由限轉單元（ 鎖扣單元（6η、 ^ 早疋150)搭配L形 ο 、b〇)，可有效防止因使用人畐m 造成注射針（2;) 因使用不當而 ζ 1)才貝壞，如：卡人，祕艿金a 且可換針式注私处,〇 β丨及雄、封性破壞等， ^ % 叶（21)在抽取藥液於筒 内後，須更換較细 體（1 0 A ) 轉單元（5〇t 射針（21)注射人體，藉由限 所產生的徑向及轴向 （21)時 到破壞者； 力而令注射器之密封性及卡合力遭 #古承上述’該下針座（3 〇 A )相對上針座 /閉％組於〇形環（2 3 A)的容槽（3丄 ^ 3曰〇 : 1 A )鄰側連通有旋轉槽（7 5 )，且該下針座 元（6 〇 )外壁面相對筒體（1 〇 A )内設有L形鎖扣單 部（6 η〉a 鎖扣早疋（6 0 )的L形槽開放 之外環緣壁面限：=:)係佈設於下針座（3〇A) 相對該L形鎖扣單H、3)係佈設於筒體（1〇A) ,θ ( 4 Π 〇 )之内環緣壁面位置，另該推 (7ri、）對應下針座（3〇a) -端依序設有旋轉座 桿（4nl伸長段（46八）及環肩部（450，當推 4隹進組入於下針座（30A)及上針座（2 14 201039877 〇 A )時，其旋轉座（7 〇 )係緊閉嚙合於下針座 A)之旋轉槽（75)，且該推桿（4〇a)之伸 -4 6 A )係穿套於上針座（2 〇 A )之伸孔（2 4 ’又該環肩部（4 5 A )具有斜錐緣俾可順利通過 的逆止閥片（36A)的開放通口 （33a)，並 位於另端的限制擋緣（3 4 A )，令伸長段（4 6 順利進入伸孔（2 4 A )後使其環肩部（4 5 A ) 伸孔（2 4 A )外端之限制擋緣（3 2 A )，且該 Ο引制動單元係設於推桿（4 0 A )—端與下針座（ )之相對位置，其中該快速導引制動單元係包含有 桿（40a)前端之旋轉座（7〇)，以及設於下 3 0 =)之旋轉槽（7 5 )，前述二者係包含有四 對緊密交錯嚙合的旋爪（76，7丄）及卡溝 2)，且各四旋爪（76，71)及四卡溝（7? )之各端末分別設有易於嚙合對位的導斜面（7 3 )’用以快速導引其相對嚙合位置並作二者環轉連 Ο藉由該推桿（40A)之旋轉座（70)與下針座 A)之旋轉槽（7 5)的緊密嚙合；另該快速導引 元之旋轉座（7 0 )及旋轉槽（7 5 )於本實施例 正、逆雙向環轉嚙合對位形態，其主要構成方式係 (76，71)、卡溝（77，72)及導斜面（ 7 8 )互為對稱之模式呈連續環狀佈設者。 °月參閱第1 7圖所示’其係本發明之第五實施 中該可換針式注射器的上針座（2 0 A )與筒體（ A )間所相對設置的[形鎖扣單元（6 〇 )的l槽 (3 長段 A ) 具彈 擋止 A ) 卡擋 快速 3 0 設於 針座 組恰 7， ,7 ，7 動， (3 制動 係為 該旋 7 3 例， 10 限位 0 ( 内 性 限 可 於 導 A 推 ( 相 7 且 0 早 可 爪 其 部 15 201039877 - (62)及開放部（61)，亦可佈設於筒體（1〇Α) 之開口端（1 2 A )内壁，並令開放部（6 1 )之開口槽 - 端對位於筒體（1 0 A )末端，且該導塊（6 3 )亦可佈 設於下針座（3 0A)之外壁面，俾使用者可藉由下針座 (30A)之導塊（63)進入L形鎖扣單元（60)之 開放部（6 1 )底邊，再朝限位部（6 2 )方向旋轉至底 限呈軸向擋止狀態，而可達到下針座（3 0 A )與上針座 (2 0 A )同步軸向限位於筒體（1 〇 A )之開口端（1 (0 2A)之目的者。 【圖式簡單說明】 第1圖：係本發明安全注射器之分解立體圖。 第2圖：係本發明安全注射器之分解剖面示意圖。 第3圖：係本發明動作示意圖一，其係顯示該推桿於筒體 内朝針座頂推之狀態。 第4圖：係本發明動作示意圖二，其係顯示該推桿嵌合針 〇 座於筒體内部之狀態。 第5圖：係本發明動作示意圖三，其係顯示該推桿未旋動 狀態。 第6圖：係本發明動作示意圖四，其係顯示該推桿旋動後 狀態。 第7圖：係本發明動作示意圖五，其係顯示該推桿回縮後 折斷之狀態。 第8圖：係本發明第二實施例之剖面示意圖。 第9圖：係本發明第三實施例之立體分解圖。 16 201039877 第l 〇圖：係本發明第四實施例之立體分解圖。 第1 1圖：係本發明第四實施例之分解剖面示意圖。 ' 第1 2圖：係本發明第四實施例之注射針與上針座之分解 剖視圖。 第 1 3 圖 : 係 本發 明 第四 實施 例 之 動 作 示 意 圖 一 5 其 係 顯 示 該 推桿 於 筒體 内朝 針 座 頂 推 之 狀 態 〇 第 1 4 圖 二 係 本發 明 第四 實施 例 之 動 作 示 意 圖 二 其 係 顯 示 該 推桿 欲 合針 座於 筒 體 内 部 之 狀 態 〇 第 1 5 圖 ； 係 本發 明 第四 實施 例 之 動 作 示 意 圖 二 7 其 係 顯 示 該 推桿 旋 動後 之狀 態 〇 第 1 6 圖 係 本發 明 第四 實施 例 之 動 作 示 意 圖 四 J 其 係 顯 示 該 推桿 回 縮後 折斷 狀 態 〇 第 1 7 圖 : 係 本發 明 第五 實施 例 之 組 合 剖 面 示 意 圖 〇 [ 主 要元件符號說明 ] 筒 體 ( 1 0 ) 容 室 ( 1 1 ) 開 σ 端 ( 1 2 ) 上 針 座 ( 2 0 ) 注 射 針 ( 2 1 ) 組 接 端 ( 2 2 ) 0 形 環 ( 2 3 ) 卡 掣 槽 ( 2 4 ) 下 針 座 ( 3 0 ) 容 槽 ( 3 1 ) 組 接 槽 ( 3 2 ) 通 孔 ( 3 3 ) 擋 緣 ( 3 4 ) 止 卸 環 ( 3 5 ) 推 桿 ( 4 0 ) 折 斷 處 ( 4 1 ) 膠 塞 ( 4 2 ) 17 201039877 調 動 端 ( 4 3 ) 延 卡 掣 端 ( 4 5 ) 斜 環 肩 部 ( 4 5 2 ) 限 限 轉 座 ( 5 1 ) 卡 限 轉 片 ( 5 2 ) L 開 放 部 ( 6 1 ) 限 導 塊 ( 6 3 ) 旋 旋 爪 ( 7 1 ) 卡 導 斜 面 ( 7 3 ) 旋 旋 爪 ( 7 6 ) 卡 導 斜 面 ( 7 8 ) 蓋 筒 體 ( 1 0 A ) 容 開 端 ( 1 2 A ) 上 注 射 針 ( 2 1 A ) 組 接 端 ( 2 2 A ) 0 伸 孔 ( 2 4 A ) 連 下 針 座 ( 3 0 A ) 容 槽 ( 3 1 A ) 限 開 放 通 口 ( 3 3 A ) 組 止 卸 環 ( 3 5 A ) 逆 推 桿 ( 4 0 A ) 折 斷 處 ( 4 1 A ) 膠 調 動 端 ( 4 3 A ) 延 卡 掣 端 ( 4 5 A ) 伸 旋 轉 座 ( 7 0 A ) 伸片（4 4 ) 錐緣（4 5 1 ) 轉單元（5 0 ) 擋面（5 1 1 ) 形鎖扣單元（6 0 ) 位部（6 2 ) 轉座（7 0 ) 溝（7 2 ) 轉槽（7 5 ) 溝（7 7 ) 帽（8 0 ) 室（1 1 A ) 針座（2 0 A ) 形環（2 3 A ) 結部（2 6 A ) 制擋緣（3 2 A ) 接緣（3 4 A ) 止閥片（3 6 A ) 塞（4 2 A ) 伸片（4 4 A ) 長段（4 6 A ) 18 201039877 旋爪（7 1 A ) 導斜面（7 3 A ) 旋爪（7 6 A ) 導斜面（7 8 A ) 卡溝（7 2 A ) 旋轉槽（7 5 A 卡溝（7 7 A )G 6 3 ) From the original shoulder (34), which is located at the lower needle and further retracted by 4 5 ), the upper needle seat (2 〇 (4 0 ) is folded, and then the force is applied to the push rod (4 〇). The safety (4 0 ) in the needle seat (2 〇 0 ) and the lower guide brake unit are rotated, because the upper limit transfer unit ( 2 2 ) and the lower needle card are configured to make the loop action shot close to the bottom limit. The guide bevel (7 3 7 0) rotates the needle seat (3 〇 easy to pull the needle on the needle needle (2 〇ο) on the needle (the part (6 2 ) turns, and the user can) The end of the end (3 0) 3 2) the ring is embedded in the displacement, the push rod body (10) is shown in the outer figure), the seat (30) and the cylinder (1 other the putter 'easy Because of the relative position of the quick needle seat (3 〇), the set end (which belongs to the ring-shaped needle seat (2 〇) rod (4 0 ) Note 7 〇) will be rotated by the base ( (75), When (3 〇) is also extremely rotated, it is accidental, so by the combination of the push rod (4 0 ) part (4 5 2 ) and the lower needle seat (3 ) of the lower needle base (30) ( break (4 1 ) break the break (after breaking into two) The attention of the person; the guide bevel of the needle seat (3 〇) (7-pin seat (2 〇) 50) 're-take the seat (3 〇) of the lower needle seat (3, to prevent the push rod ( 4) The guiding function is combined with the lower needle seat ( ) via the alignment seat (2 〇) and (2 1 ) in the person) and the cylinder (1 (3 0) limit opening (6 1 ), The push rod (4 0 stops at the lower needle seat ( 0 ), the joint groove ( 2 2 ) is interlocked and retracted and exposed to the barrel 4 1) (as in the seventh, and then reaches the lower needle (2 1 ) to stay In the engagement alignment, 8, 7 3 ) and the cylinder (1 0 ) are rotated by the upper needle seat (the 20 0 socket (3 2 ) 0 ) can only be rotated relative to the upper user. The seat (in the rotation of the push rod (4 0 3 0), the lower needle injection needle (2 1) in vivo injection rotation 0) between the limit order 11 201039877 yuan (50) design, and can According to the invention, the L brake unit can be used to make the push rod (the counter position is engaged with the rotation of the opposite needle seat, the next ring push rod (4 〇 shot needle (2 1 ) mode), and the speed guide The compact injection of the brake unit, so that the invention can reach the ampoule (2 1 ) In addition, the retraction use is that 5 1 ) can also be placed on the barrel (edge position, and the limit piece (5 outer wall % edge and relative to the barrel (0 see Figure 8, the stick The upper needle seat of the needle syringe is opposite to the inner wall of the L-shaped locking unit (open part (6 1 ), also cloth 2), and the end of the open part (1 〇) and the outer wall of the guide block ( )俾The user can enter the L-shaped locking unit 3 (the lower needle seat (30) can be reached in the direction of the limiting portion (6 2) and the problem is solved. The rotating seat (7 〇) of the button unit (60) and the quick guide can be quickly (7 5), so that the user can easily enter the needle seat to position 'to open the retracting rod (4 0 ) and the opposite needle seat The quick touch can greatly reduce the residue of the liquid medicine, the improvement of the quality of the clothing, and the practical progress of the injection. The second embodiment of the present invention is the position where the inner end ring of the opening end (1 2 ) of the rotation restricting seat ( ) can also be disposed at the limit rotation seat ( 5 1 ) of the upper needle seat (20). The open slot end (6 2 ) of the 〇) and the cylinder (10) and the open end of the open end (1) of the cylinder (1 对) may be disposed in the cylinder ( ) At the bottom of the lower needle seat (the opening part (6 1 ) of the guide block (6) of the lower needle seat (30), the bottom limit is in the axial stop state, and the seat (2 〇) synchronous axial limit is located. ) the purpose. 12 201039877 - See Figure 9 for the same, - the push rod (4 0 ) and the lower needle seat (the rotating seat of the moving unit (7 0A) is a forward or reverse only one-way (70A) and rotating Slot (7 5 rotation guide meshing position, each of the claws (75 72A) and the guide bevel of the groove (75A) (73A 〇 continuous ring layout. Please refer to the figure 10~16 needle syringe plastic state) The inner wall surface of the fourth embodiment is provided with a combination of a knotty portion (2 6 A ) ' and a joint extension hole (2 4 A ), wherein an internal thread portion is provided for the needle changeable (2 1 1 A ) Screwed into the upper needle seat 〇), and the elongated extension hole (2 4 needle (2 1A) is pressed tightly and the extension hole (2 4 A ) inner edge piece (36A), the backstop The valve plate A) is provided with a limiting retaining edge (port (33A), and the outer edge of one end of the upper needle seat (3 〇A) is provided with a seat (3 〇A) relative to the set of terminals) The rim (3 4 A ) is a third embodiment of the present invention, wherein the form of the quick guiding system and the rotating groove (75 A) between the three 〇) can guide the collocation alignment. Rotating seat) is a positive or reverse one-way ring The transposition (7 〇a) and the rotation of 6 VIII, 7 1 A) and the groove (7 7 A, ' 7 8 A ) are shown in an asymmetrical mode, and the present invention may also be interchangeable. The connecting portion (2 6 A) of the tubular shape is provided in the joint (2 6A) of the needle-changing needle (2 1 a) in the upper needle seat (2〇A), and the inner edge forming needle (2 1 A) is provided. The outer ring surface of the connecting portion (26a A) of the connecting end (20A) is also available for needle-changeable injection, and the lower needle seat (3〇8) _ is provided with a tilting elastic backrest ^ ( 36Α) corresponding to the upper needle seat (2〇3 2 A )', the other end is provided with open communication (20 A) relative to the embedded card combination under the set of 10 (2 2 A), lower jaw (2 2 A) The inner edge of the card is positioned, wherein the upper needle seat (2〇a) 13 201039877 group end (2 9 Λ, JA) jacket is provided with a 〇 ring (seat (2〇A)^m), And the upper needle) outer ring edge surface is opposite to the cylinder body (1 〇A), and the inner wall annular surface seat (51) is arranged on the upper needle seat (2 〇 之 夕 夕 限 限1 0 A ) wall 5 rim, and the open end of the 0 n ) (1 2 Λ ) inner wall ring (20 A) limit, ' ί The needle holder suction groove is provided with a limit-rotating piece (5?, the needle-replaceable injection needle main body. In this embodiment, the main line is mainly controlled by a rotation-restricting unit (locking unit (6η, ^ early 150) with L Shape ο, b〇), can effectively prevent the injection needle (2;) caused by improper use of the user ζm ζ 1) bad shell, such as: card people, secret gold a and can be replaced by needles, 〇β丨 and male, sealing damage, etc. ^% leaf (21) after the extraction of the liquid in the cylinder, the thinner (10 A) rotating unit (5〇t injection needle (21) must be replaced by the human body, By the limitation of the radial and axial (21) to the destroyer; the force of the syringe and the clamping force of the #古承 The above 'the lower needle seat (3 〇A) relative to the upper seat / closed The % group is connected to the groove (7 5 ) on the adjacent side of the groove of the ring (2 3 A) (3 丄 ^ 3曰〇: 1 A ), and the outer wall of the lower needle block (6 〇) is opposite to the tube The body (1 〇A) is provided with an L-shaped single part (6 η>a locks the early 疋 (60) L-shaped groove opening and the outer ring wall surface limit: =:) is laid on the lower needle seat ( 3〇A) Relative to the L-shaped buckle single H, 3) is laid in the cylinder (1〇A ), θ ( 4 Π 〇) inside the edge of the wall position, the other push (7ri,) corresponding to the lower needle seat (3〇a) - the end is provided with a rotating seatpost (4nl extension (46) and ring The shoulder (450, when the push 4 is inserted into the lower needle seat (30A) and the upper needle seat (2 14 201039877 〇A), the rotating seat (7 〇) is tightly engaged with the lower needle seat A) Rotating groove (75), and the extension of the push rod (4〇a) - 4 6 A) is worn over the protruding hole of the upper needle seat (2 〇A) (2 4 'and the shoulder shoulder (4 5 A) ) The open port (33a) of the check valve piece (36A) with a tapered tapered edge can pass smoothly, and the restricting retaining edge (3 4 A) at the other end, so that the extended section (4 6 smoothly enters the extending hole (2) 4 A) After the shoulder (4 5 A ) is extended (2 4 A ), the outer end of the limiting flange (3 2 A ), and the brake braking unit is set on the push rod (4 0 A) - a position of the end and the lower needle seat ( ), wherein the quick guide braking unit comprises a rotating seat (7〇) at the front end of the rod (40a), and a rotating groove (75) disposed at the lower 3 0 =), The foregoing two systems include four pairs of closely intertwined claws (76, 7 丄) and a groove 2), and each Each end of the four-rotor (76, 71) and the four-jaw groove (7?) is respectively provided with a guiding inclined surface (73) for easy meshing to quickly guide the relative meshing position and to make a loop connection therebetween.紧密 by the rotating seat (70) of the push rod (40A) and the rotating groove (75) of the lower needle seat A); the rotating guide seat (7 0 ) and the rotating groove of the quick guiding element (7) 5) In the present embodiment, the positive and reverse bidirectional toroidal meshing alignment forms, the main constituent modes (76, 71), the card groove (77, 72) and the guiding slope (78) are symmetric with each other in a continuous loop. Shaped. In the fifth embodiment of the present invention, the upper needle seat (20 A) and the cylinder (A) are disposed opposite each other in the fifth embodiment of the present invention. (6 〇) l slot (3 long segment A) with spring stop A) block fast 3 0 set in the needle block group 7, 7, 7 and 7 movements, (3 brake system for the rotation 7 3 cases, 10 Limit 0 (The internal limit can be pushed by A (phase 7 and 0 can be clawed at 15 201039877 - (62) and open (61), or can be placed at the open end of the cylinder (1〇Α) ( 1 2 A ) the inner wall, and the open groove-end of the open part (6 1 ) is located at the end of the cylinder (10 A), and the guide block (63) can also be arranged in the lower needle seat (30A) The outer wall surface, the user can enter the bottom edge of the opening portion (6 1 ) of the L-shaped locking unit (60) by the guiding block (63) of the lower needle seat (30A), and then toward the limiting portion (6 2 ) Rotating to the bottom limit is axially blocked, and the lower needle seat (30A) and the upper needle seat (20A) are axially limited to the open end of the cylinder (1 〇A) (1 (0 2A) The purpose of the figure [Simplified illustration] Figure 1: Safety syringe of the present invention Fig. 2 is a schematic exploded view of the safety syringe of the present invention. Fig. 3 is a schematic view of the action of the present invention, showing the state in which the pusher is pushed in the cylinder body toward the needle seat. The second schematic diagram of the operation of the present invention shows the state in which the push rod is fitted to the inside of the cylinder. Fig. 5 is a schematic view of the operation of the present invention, which shows that the push rod is not rotated. Figure 4 is a schematic view of the action of the present invention, which shows the state after the pusher is rotated. Fig. 7 is a schematic view of the action of the present invention, which shows the state of the pusher being retracted and then broken. Figure 8: BRIEF DESCRIPTION OF THE DRAWINGS FIG. 9 is a perspective exploded view of a third embodiment of the present invention. 16 201039877 FIG. 1 is a perspective exploded view of a fourth embodiment of the present invention. 4 is a cross-sectional view of an injection needle and an upper needle holder according to a fourth embodiment of the present invention. Fig. 1 3 is a schematic view showing the operation of the fourth embodiment of the present invention. One 5 The state in which the push rod is pushed toward the needle seat in the cylinder body is shown in FIG. 1 . FIG. 2 is a schematic view showing the operation of the fourth embodiment of the present invention. FIG. 5 is a schematic diagram showing the operation of the fourth embodiment of the present invention. FIG. 7 is a view showing the state after the pusher is rotated. FIG. 16 is a schematic view showing the operation of the fourth embodiment of the present invention. Folding state after retraction 〇 1 7 Fig.: A schematic cross-sectional view of a fifth embodiment of the present invention 〇 [Major component symbol description] Cylinder (10) Chamber (1 1 ) Open σ end (1 2 ) Upper needle Seat ( 2 0 ) Injection needle ( 2 1 ) Assembly end ( 2 2 ) 0 ring ( 2 3 ) Card slot ( 2 4 ) Lower needle seat ( 3 0 ) Cylinder ( 3 1 ) Assembly groove ( 3 2) through hole (3 3 ) retaining edge ( 3 4 ) stop ring ( 3 5 ) Push rod ( 4 0 ) Breaking point ( 4 1 ) Rubber plug ( 4 2 ) 17 201039877 Transfer end ( 4 3 ) Extension end ( 4 5 ) Oblique ring shoulder ( 4 5 2 ) Limited transposition ( 5 1 ) Snap limiter ( 5 2 ) L Open part ( 6 1 ) Limit guide ( 6 3 ) Threading claw ( 7 1 ) Snap guide ( 7 3 ) Threading claw ( 7 6 ) Snap guide ( 7 8 ) Cover cylinder ( 1 0 A ) Opening end ( 1 2 A ) Upper injection needle ( 2 1 A ) Assembly end ( 2 2 A ) 0 Extension hole ( 2 4 A ) Connect the lower needle seat ( 3 0 A) Cuvette ( 3 1 A ) Limited open port ( 3 3 A ) Group stop ring ( 3 5 A ) Reverse push rod ( 4 0 A ) Broken part ( 4 1 A ) Adhesive transfer end ( 4 3 A )延卡掣端 ( 4 5 A ) Extension Rotary Seat ( 7 0 A ) Stretching (4 4 ) Cone Edge (4 5 1 ) Rotating Unit (5 0 ) Stop Face (5 1 1 ) Shape Locking Unit (6 0 ) Position (6 2 ) Transposition (7 0 ) Ditch (7 2 ) Slot (7 5 ) Ditch (7 7 ) Cap (8 0 ) Chamber (1 1 A ) Needle seat (20 A) Ring ( 2 3 A ) knot (2 6 A ) retaining edge (3 2 A ) connecting edge (3 4 A ) Valve plate (3 6 A ) Plug (4 2 A ) Stretch (4 4 A) Long segment (4 6 A ) 18 201039877 Claw (7 1 A ) Guide bevel (7 3 A ) Claw (7 6 A ) Guide slope (7 8 A ) card groove (7 2 A ) rotation groove (7 5 A card groove (7 7 A)
1919