201100133 六、發明說明： 【發明所屬之技術領域】 本創作是有 置’尤其是一 之創新型態設 巧J命 < 回縮黎201100133 VI. Description of the invention: [Technical field to which the invention belongs] This creation is a set of 'in particular, an innovative type of design J life <
種注射針座可穩固定位於筒體―^ 計者。 體之開σ端位I 【先前技術】 Ο 〇 按，目前市場上的注射器大部份皆 射針都是不帶有任何安全裝置，非但可2統式，包括注 易造成藥物及血液污染，加 、重覆使用，且容 人員及清潔人員的刺傷，加深傳：：：：露’更造成醫護 上述習知注射n結構所存在之問題點，以，針對 免重覆使用而造成：次污染的注射器 開發-種可避 切企盼’亦是相關業者須努力研發突破之用消費者所殷 有關於注射針具體的結 目襟及方向。 職號「安全注射針筒之注射二：：：看…告 1266638號「毁棄式安全注射器」，以及T°ff八」、TW公告 具回縮針頭座之注射器」等專利案所彳:告M27496l號「 如前揭的專利案所示，目前回縮式安：不資述。 :错由磨擦阻力方式緊配合固定於筒體之主射針之針座 4固定式的料1易因外界溫度线脹;^端設計’此 =外緣與所緊配合定位的筒體產：非；=使注射針 注射過程中發生内縮或漏液現象，抑；=低導致針座於 過度卡合，於注射完畢後無法回縮注射驟降使呈 射針及針座入筒體内 3 201100133 積極尋Ϊ =:品質嚴重管制失敗進而降低良率 鮮决之道的必要。 疋以’針對上述習知 點’如何開發一種 ‘式…射針所存 術，實使用消費者# 針座穩固定位於筒體 突破之目標及方向.：切企盼，亦是相關業者須 與審丨直_ # % '、汁‘驗，針對上述之目標， 哥u汁估後，終得_ 確具實用性之本發明。 Ο 【發明内容】 即’本發明之主要目 β 回縮裝置.装娇的，疋在提供一種安全 ι，其所欲解決之Μ 全生射4 、之問題點，是針對習知回 王主射針所存在之針座 而恭4 與靖體容易因外界溫度之 而發生不可預期象， 卡人声隊γ 褚如因溫度急昇使針座與 卞口度降低，導致針座 ，如七β ^主射過程中發生内縮或 G ^、、主鼾# R & 之呈過度卡合，於注射完畢 〇縮主射針及針座入筒體 η的問？ϊ|點加以改良突破 而其解決問題之技欲4 ^ 筏術特點，主要是藉由一筒 成有一谷室，且該容室诉 ,θ 近開口端適處設有擋塊； 組疋限位設於筒體之開口 J 私亚包含至少三針座， 座之間互設有借位閉鎖梦晋·甘^ & 貞裝置，其中該借位閉鎖裝 針座設有複數可徑向彈性偏擺的彈片體，該彈片 有嵌扣部，用以限位筒體的擋塊，且該彈片體内 縮空間，該塵縮空間恰可供第三針座活動套合於 閉鎖借位，以使第二針座之嵌扣部轴向限位於筒： 者，誠有 在之問題 之創新技 努力研發 從事相關 詳加設計 注射器之 縮式之安 熱脹冷縮 筒體間的 漏液現象 後無法回 ， 體内部形 而一針座 其中各針 置是第二 體外緣設 部形成壓 内呈徑向 禮之擋塊 4 201100133 ’進一步使第一針座於筒體 開口端呈軸向鎖擋；而一推 才干疋一端設有推捍頭，該推 三針座的卡扣端者； 頭末^有用以回縮前述第 藉此創新獨特設計，傕太 縮嵌合連動裝置，而=本發明藉由借位閉鎖裝置及回 此使推桿之推桿頭能快速嵌卡於針座 、，且疋位’俾方便使用者進一牛 M M , n ^ v回縮動作，以呈回縮注 異田u 裝定位於筒體之開口端而不 易口卜界溫度而產生不可預期現象 ο 座與筒體間的卡人声珞你^ 口，皿戾心幵使針 縮m目Γ 導致針座於注射過程中發生内 縮或漏液現象，4·、g m 完畢後盔> @ S 温度驟降使呈過度卡合，於注射 針及針座入筒體内等，進而使本發明 的便利之實用:保时質的提昇，以及注射針在回縮使用上 的使利之實用進步性者。 【實施方式] 月參閱第1〜11圖所示，是本發明安全注射器之回 ◎縮裝置，較佳實施例，本創作是包含： j體（1〇)，該筒體（ίο)内部形成有一容室 掩& r 且該容室（1 1)近開口端（12)適處設有 4¾ 塊 C 4 \ / 44· 1 (/、中該擔塊（1 4 )於本實施例是為3片 ’故在剖視圖中僅 __ _ 甲僅為一片斷面顯不），該擋塊（14)之 鄰側設有限轉片 乃113) ’末端處設有擋緣（15); 才隹才田 (rr r\ 干 b〇)，其是前端依序設有膠塞（54)及 一推桿頭（ς 7、 ’）’該推桿頭（5 7 )末端設有用以回縮 針座組的卡扣娃f 夺端（56)，且該卡扣端（56)内緣並設 5 201100133 有擋止部（5 5)，曰诗4各1 n ^ r -, n , “推桿（5 〇 )之預定位置設有與 荀體（1 0 )之擋緣 兮户A山,η 家（1 5 )對應擋止的擋止端（5 3 ) ，§亥擋止端（5 3 ) 之相鄰位置設有可供折斷破壞的折斷 處（5 2 ) ’又該推 _«、. +干（50)末端形成有一抵推端（5 7針座組’其是限位設於筒體（1 0 )之開口端（1 2 )並包3至少二針座，該三針座分別界定為第一針座（ 2〇)、第-針座（3〇)及第三針座（40)，各三針 〇座，間互叹有借位閉鎖裝置、回縮嵌合連動裝置，以及設 ，第。針座（2〇)及筒體（i〇)的限轉裝置，而本發 、、 十式/主射器為最佳實施例，其中該第一針座（2 、J面形成有一岫端座（28)，該前端座（28)内 ::八有内螺紋的固鎖槽（2 3 ) ’該固鎖槽（2 3 )可供 :螺組裝一可換式注射針（6 〇 )之螺部（“），又該 月9端座（2 8 )相對導桿（2 6 )之一另側面形成有擋壁 (29)，該注射針（60)前端可蓋設一蓋體（7〇) 〇 又該固鎖槽（2 3)内中央是凸伸有長柱體令其貫設有 穿邛（24)，而該穿部（24)可供推桿（β〇)之 推桿頭（5 7 )穿設於内，另該第一針座（2 〇 )末端設 有導杯（26)，該導桿（26)外緣套設有〇形環（2 5 ) ’且該第三針座（4 〇 )内部設有恰對應套組該導桿 (26)之導動槽（44)，且該導動槽（44)末端緣 形成有套合空間（4 3 ) ’該套合空間（4 3 )恰可密閉 組裴於第一針座（2 〇 )之〇形環（2 5 )，又該第三針 座（4 〇 )之外緣是密閉套組有—〇形環（4 5 )，其中 6 201100133 該〇形環 端且密閉 該借 端（3 1 的彈片體 凸設有嵌 位筒體（ 彈片體（ Ο 3 4 ) ’ 4 0 )之 之前柱端 令前述二 )之前柱 二針座（ )受到第 3 4 )中 0 )另端之(14) 針座（3 端（1 2 之嵌扣部 制時，則 軸向脫出 第二針座 令各彈片 (4 5 導滑於 位閉鎖 )’該 (32 扣部（ 1〇) 3 2 ) 其中前 前柱端 (48 者達到 端（4 3〇) ζ針座 朝内作 外緣嵌 而無法 0 )及 )内具(33 需使該 第二針 (30 體（3 ) 筒 裝 座 容 内 述 徑8 之 ( 彈 扣 脫 第 鎖 ) 第 2 是密閉 體（1 置，其 端（3 ，各彈3 )， 室（1 部形成 之壓縮4 8) 紮實套 向閉鎖 )進入 彈片體4 0) 性偏擺 部（3 離，進 三針座 擋之功 脫離筒 三針座(3〇 因其内 )朝内 套合限位於第二針座（3 00 ); 1 片 各1 提 空 套 合 借 該 ( 套 動 ( 致 體 部 作 第二針座（3 0 ) —端設 )延設有複數可徑向彈性 體（3 2 )外緣端末位置 嵌扣部（3 3 )可用以嵌 )内緣的擋塊（1 4 )， 供朝内徑向偏擺的壓縮空 間（3 4 )恰可供第三針 合，以使該第三針座（4 封鎖於壓縮空間（3 4 ) 位狀態，藉由第三針座（ 壓縮空間（3 4 )後，以 3 2 )因内部壓縮空間（ 置填實，而無法於壓縮空 作，同時令該第二針座（ )嵌扣於筒體（10)之 步使第一針座（2 0 )、 4〇)於筒體（1〇)之 ;反之欲使第二針座（3 (1 0 )之擋塊（1 4 ) 4〇)之前柱端（48) 内部的壓縮空間（3 4 ) 保有壓縮空間（3 4 )後 徑向偏擺，進而使第二針 )末 有座 偏擺 朝外 扣限 且該 間（ 座（ 0 ) 内， 4 0 使第 3 4 間（ 3 0 擋塊 第二 開口 0 ) 之限 朝後 ，該 而可 座（ 7 201100133 3 0 ) 之 各 彈 片 體 ( 3 狀 態 經 由 外 力 轴 向 回 第 二 針 座 ( 3 0 ) 之 各 體 ( 1 0 ) 的 擋 塊 ( 1 軸 向 限 制 回 縮 至 筒 體 ( — 回 縮 嵌 合 連 動 裝 内 緣 對 應 推 桿 ( 5 0 ) 套 置 定 位 的 扣 合 部 ( 4 〇 端 位 置 並 形 成 有 擋 端 ( 檔 止 於 推 桿 ( 5 0 ) 之 0 ) 可 轴 向 插 套 進 入 於 該 第 二 針 座 ( 4 0 ) 對 嵌 組 定 位 的 嵌 凸 緣 ( 4 該 嵌 凸 緣 ( 4 7 ) 則 設 ( 4 0 ) 對 應 第 一 針座 ) 5 該 導 動 槽 ( 4 4 ) 0 而 該 第 針 座 ( 2 0 ) ( 2 6 ) 且 該 導 桿 ( 中 該 第 — 針 座 ( 4 0 ) 0 ) 之 導 桿 ( 2 6 ) 可 4 4 )與導捍（2 6 ) 導滑行程’當該推桿（ 〇 )之卡扣端（5 6 ) )的扣合部（4 1 )， 4 7 )是先嵌合於第二 另端的篏扣部（3 3)因内縮 第二針座（30)後，而可令 體（3 2 )自然彎曲脫離於筒 ’進而脫離該筒體（10)之 )内部（如第1〇圖所示）； 是該第三針座（4 0 )後端部 扣端（5 6 )則設有僅供單向 ，且該扣合部（4 1 )内緣前 )，該擋端（4 2 )恰可相對 部（5 5 )，以使該推桿（5 針座（40)内嵌卡定位；另 第二針座（3 0)設有可輛向 ，而該第二針座（3 0 )對應 合緣（3 5 )，且該第三針座 0 )之内部設有導動槽（4 4 端部則設有嵌合部（4 6 )， 該導動槽（4 4 )則設有導桿 )末端設有嵌緣（27)，其 動槽（44)及第一針座（2 導滑組裝位移，且該導動槽（ 之間在導滑位移時並具有預定 )在回縮位移時，該推桿（5 序套合限位於第三針座（4 〇 第三針座（40)之嵌凸緣（ (30)的欲合緣（35)( 8 201100133 如第7〜8圖所示），並使第三針座（40)的嵌合部（ 46)帶動第一針座（20)的嵌緣（27)(如第9〜 10圖所示），而令第一、二、三針座（20，30，4 0)依序回縮進入於筒體（10)内部者（如第7〜10 圖所示）； 一限轉裝置，其是於該筒體（1 0)之開口端（1 2 )内緣佈設有限轉片（1 3 )，且該第一針座（2 0 )外 緣對應該限轉片（1 3 )則設有限轉座（2 2 )，且該限 0 轉座（22)並設有後擋部（2 1)，其中該第一針座（ 2 0 )之各限轉座（2 2 )是恰錯開於筒體（1 0 )之擋 塊（1 4 )，以使第一針座（2 0 )組入於筒體（1 0 ) 之開口端（1 2 )時，該第一針座（2 0 )之限轉座（2 2)是錯開於筒體（1 0)容室（1 1)内部之擋塊（1 4 )，並使第一針座（2 0 )之限轉座（2 2 )的後擋部 (2 1 )得順利嵌組限位於筒體（1 0 )内緣之限轉片（ 13)，除可令第一針座（20)不易朝前脫出外，並於 Q該第一針座（2 0 )之固鎖槽（2 3 )内導螺組裝一可換 式注射針（6 0 )時，可防止該第一針座（2 0 )與可換 式注射針（6 0 )發生非預期的連轉； 藉由上述之結構、組成設計，茲就本發明之使用作動 情形說明如下： 當該針座組在常態下，該第二針座（3 ◦)是套置於 筒體（10)之容室（1 1)内緣，令該第二針座（30 )外緣之嵌扣部（3 3 )嵌卡限位於該筒體（1 0 )容室 (11)之擋塊（14)，而該第三針座（40)之前柱 9 201100133 端（4 8 )是套鎖限位於該第二針座（3 〇 )内部之壓縮 空間（3 4 )内，令第二針座（ 、J U )内部壓縮空間（q 4)經由第三針座（4〇)之(3 第1应、 則柱端（4 8 )填實，而令 第-針座（30)之各彈片體（32) 擺的壓縮空間（3 4 )，又嗲 去彈1·生偏 ；又该第一針座（2〇) 筒體（1 0 )之開口端（i 2 ) ’ °又、 之導動槽（…是導滑組袭於第一 :^: 40) ⑴），其中該第一針座（二針；（2〇)之導桿 Ο 、20)之嵌緣（27)县盥 第三針座（4〇)之嵌合部（ 、 l 4 6 )形成有適當間距； 本發明的安全回縮結構注 b ,,^ 射益的操作過程（包含葯液 抽取，注射，回縮）詳述. 、· i“、“ 百先將推桿（5 0 )往前 推至適§位置，此位置即是 、Λ 杯（5〇)的卡扣端 )/、第三針座（4 0 )之扣合部（ 的位置；再將注射針（6 〇 ) 扣合狀態 、a )插入葯瓶中，將推桿（已〇 )後拉，使筒體（1 ◦)内產“ ^ ( 5 〇 式進入筒體（1D)吉s 真工，葯液藉真空抽吸方 间體CIO)直至所須晋 ο分離 -α *认私 里已達到，將注射器與葯瓶 拍筒俨…、 射針（6 〇)則更換，再而輕 拍疴體（1 〇 )並緩緩地往 (! η , ^ ^ 月】推進推桿（5 0 )，使筒體 l丄〇 )内空氣排出並將超量 人髀# t里的药液排除；待注射針注入 人體時，該第一針座& -. 0 η , 〇)之擋壁（29)是擋止於第 一針座（30)及第三針座 ^ , (4〇)的前端緣位置，且該 弟一針座（3 0 )是利用借位閉 n n 位閉鎖裝置以定位於筒體（1 〇)之開口端（i 2 )， 並腼使/主射針（6 0 )得穩固定位 卡 射儿畢時，該推桿（5 0 )之 ^ (5Θ)是嵌卡定位於第/ 於弟二針座（4 0 )之扣合部 10 201100133 (4 1 ) ’嵌卡時該推桿（5 〇 )之卡扣 ^ )疋與第三針座（4 0 )之扣合部（4工） 擋端y 4 2 )呈相對彼此限位狀態，更進一步該推桿 〇)藉由回縮嵌合連動裝置’而令第三針座（40)之椒 凸緣（4 7 )及嵌合部（4 6 )分別依序帶動第二針座 及第針座（20)，最後令注射針（6〇) 於筒體（10)内部，當推桿（5〇)回縮時其撞止蠕 Ο 5 ?是擋止於筒M ( i 〇 ) 一端之擋緣（丄5 ) :隹杯（5 〇 )之折斷處（5 2 )恰露出於外，使 斷該推桿（…之折斷處（52)而使該注射針 )無法再次重覆使用者。 冑此，本發明藉由借位閉鎖裝置及回縮 ’而能使推桿（5 〇 )夕施# , r 咬勒哀置 干（5 0 )之推杯頭（5 7 )能快速嵌卡於 座、，且疋位，俾方便传用去冰—丁 十 使用者進仃下一步回縮動作，以呈 注射針模式，且針座組能穩固組裝定位於筒體（工〇 ): 開口端（1 2 )而不易因外界、、θ声姦 m因τ“ ㈣外界度而產生不可預期現象， G 度急昇使針座與筒體間的卡合度降 中發生内！或漏液現象，抑或是因温度驟= 内等"m畢後無法回缩注射針及針座入筒體 =針Γ使本發明可達到安全、環保品質的提昇，以及 庄射針在回縮使用上的便利之實用進步性者。 請參閱第i 2圖所示，其是本發明之 中該第一針座（2 0 )之導 第-實施例，其 套合*門「 6 )外緣端可為環設有 第一：二9n 令〇形環（25)密閉套設於該 針座（20)之套合空間（261)者（其中該播塊 11 201100133 ( 1 4 ) 於 本 實 中 僅 為 二 片 斷 面 請 參 閱 第 1 中 該 第 一 針 座 ( 針 座 ( 2 0 ) 對 成 有 可 供 嵌 入 於 0 ) 之 推 桿 頭 ( 5 7 A ) 於 末 端 A ) 5 用 以 檔 止 擋 端 ( 4 2 ) 者 為 偶 數 且 為 對 稱 請 參 閱 第 1 要 黏 針 形 態 的 6 ) 外 緣 端 可 為 ( 2 5 ) 密 閉 套 6 1 ) 者 ( 其 中 〇且為對稱，故在 施例數量是為偶數且 顯示）。 3圖所示，其是本發 2 0 )為黏針形態之 應該推桿（5 〇 )之 内部的容置部（2 8 5 7 A )為一子彈頭 形成有卡扣端（5 6 於第三針座（4 〇 ) (其中該擋塊（1 4 ’故在剖視圖中僅為 4圖所示，其是本發 注射針之第一針座（ 環設有套合空間（2 设於該第一針座（2 該擋塊（1 4)於本 剖視圖中僅為二片斷 為對稱’故在剖視圖 明之弟三實施例，发 注射針，其中該第— 推桿頭（5 7 A )形 1 ) ’而該推桿（5 形態’且該推桿頭（ A)及擋止部（5 5 之扣合部（4 1 )及 )於本實施例數量是 二片斷面顯示）。 明之第四實施例，主 2 0 )之導桿（2 6 1 )，而令〇形環 ◦)之套合空間（2 實施例數量是為偶數 面顯示）。 【圖式 第1圖 第2圖 第3圖 簡單說明】 第4圖 第5廣| •是本發明安全 •是本發明安全 :是本發明安全 該注射針之未 :是第3圖之局 :是本發明安全 〜且〜"肝立體圖。 注射器之回縮裳置之分解剖視圖。 注射器之動作示意圖一’其是顯示 注射狀態。 部放大圖。 注射器之動作示意圖二，其是顯示 12 201100133 該注射針之已注射狀態。 第6圖：是第5圖之局部放大圖。 第7圖：是本發明安全注射器之動作示意圖三，其是顯示 該注射針回縮時，其第三針座是先制動第二針座 狀態。 第8圖：是第7圖之局部放大圖。 第9圖：是本發明安全注射器之動作示意圖四，其是顯示 該第三針座是後制動第一針座狀態。 q 第10圖：是第9圖之局部放大圖。 第1 1圖：是本發明安全注射器之動作示意圖五，其是顯 示該推桿回縮後折斷狀態。 第1 2圖：是本發明安全注射器之第二實施例。 第1 3圖：是本發明安全注射器之第三實施例。·‘ 第1 4圖：是本發明安全注射器之第四實施例。 【主要元件符號說明】 容室（1 1 ) 限轉片（1 3 ) 擋緣（1 5 ) 後擋部（2 1 ) 固鎖槽（2 3 ) 0形環（2 5 ) 嵌緣（2 7 ) 前端座（2 8 ) 套合空間（2 6 1 ) ◎筒體（1 0 ) 開口端（1 2 ) 擋塊（1 4 ) 第一針座（2 0 ) 限轉座（2 2 ) 穿部（2 4 ) 導桿（2 6 ) 容置部（2 8 1 ) 擋壁（2 9 ) 13 201100133 第二針座（3 0 ) 彈片體（3 2 ) 壓縮空間（3 4 ) 第三針座（4 0 ) 擋端（4 2 ) 導動槽（4 4 ) 嵌合部（4 6 ) 前柱端（4 8 ) 0 推桿（5 0 ) 折斷處（5 2 ) 膠塞（5 4 ) 卡扣端（5 6 ) 注射針（6 0 ) 蓋體（7 0 ) 擔止部（55Α) 推桿頭（5 7 A ) 〇 座端（3 1 ) 嵌扣部（3 3 ) 嵌合緣（3 5 ) 扣合部（4 1 ) 套合空間（4 3 ) 0形環（4 5 ) 嵌凸緣（4 7 ) 抵推端（5 1 ) 擔止端（5 3 ) 擔止部（5 5 ) 推桿頭（5 7 ) 螺部（6 1 ) 卡扣端（56A) 14The needle holder can be stably fixed in the cylinder. Open σ end position I [Previous technology] Ο 〇 Press, most of the syringes on the market currently do not have any safety devices, not only can be integrated, including the injection of drugs and blood pollution, Plus, repeated use, and the stab wounds of personnel and cleaning personnel, deepening the transmission::::Lu's more problems caused by the above-mentioned conventional injection n structure, in order to avoid repeated use: secondary pollution The development of syringes - a kind of avoidable and eager to look forward to 'it is also the relevant industry to strive to develop breakthroughs. Consumers have specific conclusions and directions about the injection needle. The title of the "Safe Injection Syringe Injection II::: See... 1266638 "Destroyed Safety Syringes", and T°ff Eight", TW Announced Syringe with Retracted Needle Holder", etc. M27496l "As shown in the previously disclosed patent case, the current retracting type of safety: not stated.: The wrong way is to use the friction resistance method to closely match the needle seat fixed to the main needle of the cylinder. Temperature line expansion; ^ end design 'this = outer edge and tightly positioned cylinder production: non; = causing contraction or leakage during the injection of the injection needle;; = low causes the needle seat to over-engage After the injection is completed, it is impossible to retract the injection dip so that the needle and the needle holder are inserted into the cylinder. 3 201100133 Active search =: The quality of the serious control failure and the need to reduce the yield of the fresh way. Knowing how to 'develop a kind of 'shots', the actual use of consumers # needle seat is firmly fixed in the goal and direction of the barrel breakthrough.: cut the hope, is also related to the industry must be straight _ # % ', Juice's test, in response to the above objectives, after the evaluation of the brothers, the final result is _ practical The present invention. Ο 【Abstract】 The main target of the present invention is a β-retracting device. Knowing that the main needle of the king’s main needle is present, Christine 4 and Jing body are prone to unpredictable images due to external temperature. The karaoke team’s gamma 褚 褚 褚 因 因 因 因 因 因 因 因 因 因 因 因 因 因 因 因 因 因 因 因 因 因 因Block, such as seven β ^ main shot process occurs in the contraction or G ^,, the main 鼾 # R & is over-engaged, after the injection has collapsed the main shot needle and the needle seat into the cylinder η? The point is to improve the breakthrough and its technical ability to solve the problem 4 ^ 筏 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点 特点The opening J of the cylinder comprises at least three needle holders, and the sockets are provided with a borrowing and locking mechanism, wherein the borrowing locking needle holder is provided with a plurality of radially elastic yaws. The elastic piece body has a fastening portion for limiting the stopper of the cylinder body, and the elastic piece body shrinks the space, and the dust reduction space Just for the third needle seat to fit in the latching borrowing position, so that the inset portion of the second needle seat is axially limited to the tube: Yes, there is a problem in the innovation of the technology to develop the relevant detailed design syringe After the leakage of the shrinking type of thermal expansion and contraction cylinder can not be returned, the internal shape of the body and the needle position of each needle is the second outer edge of the set portion to form a pressure inside the radial shield 4 201100133 ' Further, the first needle seat is axially locked at the open end of the cylinder; and one end of the pusher is provided with a pusher head, and the buckle end of the pusher is used; This innovative and unique design, the 傕 too shrinks the interlocking device, and = the present invention allows the pusher head of the push rod to be quickly inserted into the needle seat by means of the borrowing and locking device, and the position is convenient for the user Into a cow MM, n ^ v retracting action, in order to retract the different field u installed in the open end of the cylinder and not easy to interface temperature and unpredictable phenomenon ο seat card and the card between the card people ^ mouth, the heart of the dish makes the needle shrink m mesh, causing the needle seat to contract during the injection process Or leakage phenomenon, 4, gm after the helmet> @ S temperature sudden drop to make excessive engagement, in the injection needle and needle into the cylinder, etc., so that the convenience of the present invention: time-quality Lifting, and the practical advancement of the injection needle in the use of retraction. [Embodiment] Referring to Figures 1 to 11, the present invention is a retracting device for a safety syringe of the present invention. The preferred embodiment comprises: j body (1〇), which is formed inside the barrel (ίο) There is a chamber cover & r and the chamber (1 1) near the open end (12) is provided with 43⁄4 block C 4 \ / 44· 1 (/, the load block (14) is in this embodiment It is 3 pieces 'so only __ _ A in the cross-sectional view is only one piece of the section), the adjacent side of the block (14) is provided with a limiting piece 113) and the end is provided with a retaining edge (15);隹才田(rr r\干b〇), which is provided with a rubber plug (54) and a putter head (ς 7, ')' at the front end of the putter head (5 7 ) The buckle of the seat group is the end of the buckle (56), and the inner edge of the buckle end (56) is set to 5 201100133 with a stop portion (5 5), 曰诗4 each 1 n ^ r -, n , "push The predetermined position of the rod (5 〇) is provided with a blocking edge (5 3 ) corresponding to the blocking edge of the 荀 body (10), η 家 (1 5 ), § 赫 blocking end (5 3) The adjacent position is provided with a breakage for breaking and breaking (5 2 ) 'and the push _«, . + dry (50) Forming an abutting push end (the 5 7-pin seat set ' is a limit end disposed on the open end (1 2 ) of the cylinder body (10) and includes at least two needle seats, the three-pin sockets respectively defined as the first needle seat (2〇), the first-handle (3〇) and the third needle seat (40), each of the three-pin squats, with a borrowing and locking device, a retracting and fitting device, and a needle. The rotation device of the seat (2〇) and the cylinder (i〇), and the present invention, the ten-type/main emitter is a preferred embodiment, wherein the first needle seat (2, J face is formed with a socket end seat) (28), inside the front end seat (28):: eight internal locking groove (2 3 ) 'The locking groove (2 3 ) is available for: screw assembly and a replaceable injection needle (6 〇) The screw portion ("), and the month 9 end seat (28) is formed with a retaining wall (29) on the other side of the guide rod (26), and the front end of the injection needle (60) can be covered with a cover body (7) 〇) In the center of the lock groove (23), a long cylinder is protruded from the center so that the through hole (24) is penetrated, and the wearing portion (24) is used for the push rod of the push rod (β〇) The head (5 7 ) is disposed inside, and the end of the first needle seat (2 〇) is provided with a guide cup (26), and the outer edge of the guide rod (26) The sleeve is provided with a 〇-shaped ring (25) and the third needle seat (4 〇) is internally provided with a guiding groove (44) corresponding to the set of the guiding rod (26), and the guiding groove (44) The end edge is formed with a fit space (4 3 ) 'the fit space (4 3 ) can be closed to the first needle seat (2 〇) of the first ring seat (2 5 ), and the third needle seat ( 4 〇) The outer edge is a closed sleeve with a 〇-shaped ring (4 5 ), where 6 201100133 is the end of the 〇-shaped ring and closes the borrowing end (the shrapnel of the 3 1 is convexly provided with the clamping cylinder (the slab body ( Ο 3 4 ) ' 4 0 ) Before the column end, before the second two), the two needle holders ( ) are subjected to the 3rd 4) and the other end of the (14) needle seat (3 end (1 2 At the time, the second needle seat is axially disengaged so that each shrapnel (4 5 guides slide in position) 'this (32 buckle part (1〇) 3 2 ) where the front front end of the column (48 reaches the end (4 3〇) ζThe needle seat is inwardly embedded as the outer edge and cannot be 0) and) the inner part (33 needs to make the second needle (30 body (3) cartridge housing the diameter 8 (the buckle is unlocked) 2nd It is a closed body (1 set, its end (3, each bomb 3), the chamber (the pressure of the formation of 1 part) 4 8) Solid sleeve lock) into the shrapnel body 4 0) Sexual yaw part (3 detachment, the work of the three-pin seat block is separated from the three-handle of the tube (3 〇 is inside)) Seat (3 00 ); 1 piece of each 1 empty support (lending (the body part is the second needle seat (30) - end) extended with a plurality of radial elastic bodies (3 2 ) The edge end end fastening portion (3 3 ) can be used to embed the inner edge of the stopper (1 4 ), and the compression space (3 4 ) for the inner radial yaw is just for the third stitch, so that the first Three-pin seat (4 blocked in the compressed space (3 4 ) position, with the third needle seat (compressed space (3 4 ), after 3 2 ) due to the internal compression space (filled, can not be compressed At the same time, the second needle seat ( ) is inserted into the cylinder (10) to make the first needle seat (20), 4〇) in the cylinder (1〇); 3 (1 0 ) stop (1 4 ) 4〇) The compression space inside the column end (48) (3 4 ) retains the compression space (3 4 ) and then the radial yaw, so that the second needle has The yaw is biased outwards and the room is inside ( 0 ( 0 ), 4 0 Make the 3rd (3 0th stop second opening 0) limit backwards, and the shrapnel (7 201100133 3 0) can be seated (3 state via the external force axially back to the second hub (3 0 ) The stopper of each body ( 1 0 ) ( 1 axial limit retracts to the cylinder ( — retracts the fitting inner edge corresponding to the push rod ( 5 0 ) the positioning position of the buckle (4 end position) And forming a blocking end (stopping at 0 of the push rod (50)), the axial insertion sleeve can enter the second needle seat (40), and the embedded flange is positioned for the embedded group (4 the embedded flange (4 7) Then (4 0 ) corresponds to the first hub) 5 the guide slot ( 4 4 ) 0 and the first hub ( 2 0 ) ( 2 6 ) and the guide (the first - the header (4 0) 0) The guide rod (2 6 ) can be 4 4 ) and the guide (2 6 ) guide slip stroke 'when the push rod ( 〇 ) snap end (5 6 )) the snap portion (4 1 ) , 4 7 ) is the first buckle (3 3) that is fitted to the second end of the second end (30), because the second needle seat (30) is retracted, the body (3 2 ) However, the bending is separated from the inside of the cylinder 'and further away from the cylinder (10) (as shown in FIG. 1); the rear end of the third hub (40) is provided with only the buckle end (56) For one-way, and the front end of the fastening portion (4 1 ), the end (4 2 ) is opposite to the opposite portion (5 5 ), so that the push rod (the 5-pin seat (40) is embedded with the card positioning The second needle seat (30) is provided with a movable direction, and the second needle seat (30) corresponds to the closing edge (3 5 ), and the inside of the third needle seat 0) is provided with a guiding groove ( 4 4 The end portion is provided with a fitting portion (46), and the guiding groove (4 4) is provided with a guiding rod. The end is provided with a fitting edge (27), the moving groove (44) and the first needle seat ( 2 Guide slide assembly displacement, and the guide groove (with a predetermined displacement between the guide and the slide), in the retraction displacement, the push rod (5 sequence sleeve is limited to the third needle seat (4 〇 third needle seat) (40) The flange (35) is to be joined (35) (8 201100133 as shown in Figures 7 to 8), and the fitting portion (46) of the third hub (40) is driven first. The flange (27) of the needle holder (20) (as shown in Figures 9 to 10), and the first, second and third needle holders (20, 30, 40) are sequentially returned. Entering the inside of the cylinder (10) (as shown in Figures 7 to 10); a limiting device, which is provided with a limiting piece on the inner edge of the open end (1 2) of the cylinder (10) (1) 3), and the outer edge of the first needle seat (20) corresponds to the rotating piece (13), and the limiting seat (2 2 ) is provided, and the zero-turning seat (22) is provided with a rear stop ( 2 1), wherein each of the limiters (2 2 ) of the first hub (20) is a stop (1 4) that is correctly shifted from the cylinder (10) so that the first hub (20) When the group is placed at the open end (1 2 ) of the cylinder (10), the limit seat (2 2) of the first needle seat (20) is staggered from the cylinder (10) chamber (1 1 The inner stop (1 4 ), and the rear stop (2 1 ) of the limit seat (2 2 ) of the first needle seat (2 0 ) is smoothly embedded in the inner edge of the cylinder (10) The limit rotation piece (13), in addition to making the first needle seat (20) difficult to face forward, and assembling the screw in the locking groove (23) of the first needle seat (20) When the injection needle (60) is replaced, the unintended rotation of the first needle seat (20) and the replaceable injection needle (60) can be prevented; by the above structure and composition design, The operation of the present invention is described as follows: When the needle seat set is in a normal state, the second needle seat (3 ◦) is placed on the inner edge of the chamber (1 1) of the cylinder body (10), so that The locking portion (3 3 ) of the outer edge of the second needle seat (30) is in the limit of the stopper (14) of the housing (11) of the cylindrical body (10), and before the third needle holder (40) The end of the column 9 201100133 (4 8 ) is a compression limit space (3 4 ) inside the second needle seat (3 〇), so that the internal compression space (q 4) of the second needle seat (JU) passes through The three-handle (4〇) (3 first, then the end of the column (4 8) is filled, and the compression space (3 4 ) of the shrapnel (32) of the first-handle (30) is placed,嗲 弹 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ^: 40) (1)), where the first needle seat (two needles; (2〇) guide rods 、, 20) is the fitting edge (27) of the third needle seat (4〇) of the county seat ( l 4 6 ) formed with appropriate spacing; the safe retracting structure of the present invention is injected, and the operation process of the injection (including the liquid extraction Injection, retraction) details. , · i ", " Hundreds of first put the push rod (5 0) forward to the appropriate position, this position is the 卡 cup (5 〇) buckle end) /, the first Insert the three-pin (40) button (position; then insert the needle (6 〇) in the snap-in state, a) into the vial, and pull the pusher (clamped) back to make the cylinder (1 ◦ )In-product "^ (5 〇 enters the cylinder (1D) Ji s real work, the liquid is pumped by the vacuum pumping the inter-body CIO) until it is necessary to separate -α *Private has been reached, the syringe and medicine Bottle 拍..., shot (6 〇), then pat the body (1 〇) and slowly push the (! η , ^ ^ month) pusher (5 0 ) to make the cylinder l丄〇) The inside air is discharged and the liquid in the excess person t# t is excluded; when the injection needle is injected into the human body, the blocking wall (29) of the first needle seat & -. 0 η , 〇) is blocked At the front end edge of the first needle seat (30) and the third needle seat ^, (4〇), and the first needle seat (30) is positioned by the borrowing position nn position locking device to position the cylinder (1)开口) the open end (i 2 ), and make / main shot (60) a stable fixed position card At the end of the day, the pusher (5 0 ) ^ (5 Θ) is the snap-fit portion of the second/seat two-seat (4 0 ). The 201110133 (4 1 ) 'the push rod when the card is inserted (5) 〇)The buckle ^ ) 疋 and the third needle seat ( 4 0 ) the buckle part (4 work) the stop end y 4 2 ) is in a state of being restrained relative to each other, and further the push rod 〇) by retraction In conjunction with the linkage device, the pepper flange (4 7 ) and the fitting portion (46) of the third needle seat (40) sequentially drive the second needle seat and the needle holder (20), respectively, and finally the injection needle ( 6〇) Inside the cylinder (10), when the push rod (5〇) is retracted, it hits the tamper 5? It is the retaining edge (丄5) at the end of the cylinder M (i 〇): 隹 cup ( 5 〇) The break (5 2 ) is just exposed, so that the pusher (the break (52) of the needle (the needle) cannot be repeated again. Therefore, the present invention can quickly insert a card by using a borrowing locking device and retracting 'to make a push rod (5 〇) 夕施#, r bite and let dry (5 0) push cup head (5 7 ) In the seat, and the position, it is convenient to pass the ice-Ding ten users into the next retracting action, in the injection needle mode, and the needle seat group can be stably assembled and positioned in the cylinder (work): The end (1 2 ) is not easy to be unpredictable due to the outside world, θ 声 m 因 “ ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可 不可Or because of the temperature sudden = internal, etc. After the completion of the m can not retract the needle and the needle into the cylinder = needle Γ so that the invention can achieve safe, environmentally friendly quality improvement, and the Zhuang injection needle in the use of retraction For the convenience and practical progress of the person, please refer to the figure i 2, which is the guide embodiment of the first needle seat (20) in the present invention, and the outer edge of the sleeve *6 "6" can be The first ring is provided for the ring: the second 9n ring-shaped ring (25) is tightly sleeved on the fit space (261) of the needle seat (20) (where the broadcast block 11 201100133 (1 4 ) is in the present For the only two-piece face, please refer to the first needle seat (the needle seat (20) is inserted into 0) (the end of the needle head (5 7 A) at the end A) 5 The end of the stop ( 4 2 ) is even and symmetrical. Please refer to the 1st shape of the needle. 6) The outer edge can be ( 2 5 ) the closed sleeve 6 1 ) (where the symmetry is symmetrical, so the number of applications It is an even number and is displayed.) As shown in Fig. 3, it is the inside of the hairpin (5 〇) which is the shape of the needle (2 8 5 7 A). Snap end (5 6 to the third needle seat (4 〇) (where the stopper (1 4 ' is only shown in Figure 4 in the cross-sectional view, which is the first needle seat of the injection needle of the hairpin The splicing space (2 is set in the first needle seat (2, the block (14) is only symmetrical in the cross-sectional view in the cross-sectional view, so in the third embodiment of the cross-sectional view, the injection needle, wherein the first-push The head (5 7 A ) is shaped 1) 'and the push rod (5 form 'and the pusher head (A) and the stop (5 5 snap) The number of parts (4 1 ) and ) in the present embodiment is shown in two pieces.) In the fourth embodiment of the invention, the guide rod (2 6 1 ) of the main 2 0 ) and the collar (◦ ◦ ◦) fit the space ( 2 The number of embodiments is shown as an even number.) [Fig. 1st, 2nd, and 3rd is a brief description] Fig. 4 is 5th wide | • It is safe according to the present invention • It is safe for the present invention: it is safe for the present invention Needle: It is the picture of Figure 3: It is the safe and ~" liver stereogram of the present invention. The anatomical view of the retraction of the syringe. The schematic diagram of the action of the syringe is shown to indicate the state of injection. Enlarged picture. The schematic diagram of the action of the syringe is shown in Fig. 12 201100133. The injection needle has been injected. Fig. 6 is a partial enlarged view of Fig. 5. Fig. 7 is a schematic view 3 of the operation of the safety syringe of the present invention, which shows that when the needle is retracted, the third needle seat is braked to the second needle seat state. Fig. 8 is a partial enlarged view of Fig. 7. Fig. 9 is a schematic view 4 of the operation of the safety syringe of the present invention, which shows that the third needle seat is in the state of the first seat of the rear brake. q Figure 10: is a partial enlarged view of Figure 9. Fig. 1 is a schematic view 5 of the operation of the safety syringe of the present invention, which shows the state in which the pusher is retracted and then broken. Figure 12 is a second embodiment of the safety syringe of the present invention. Fig. 13 is a third embodiment of the safety syringe of the present invention. - Figure 14 is a fourth embodiment of the safety syringe of the present invention. [Main component symbol description] Room (1 1 ) Limiting plate (1 3 ) Retaining edge (1 5 ) Rear stop (2 1 ) Solid lock groove (2 3 ) 0 ring (2 5 ) Insert edge (2 7) Front seat (2 8 ) Casing space (2 6 1 ) ◎ cylinder (1 0 ) open end (1 2 ) stop (1 4 ) first needle seat (2 0 ) limit seat (2 2 ) Wearing part (2 4 ) Guide rod (2 6 ) accommodating part (2 8 1 ) Blocking wall (2 9 ) 13 201100133 Second needle seat (3 0 ) Spring body (3 2 ) Compression space (3 4 ) Third Needle seat (4 0 ) Stop end (4 2 ) Guide groove (4 4 ) Fitting part (4 6 ) Front column end (4 8 ) 0 Push rod (5 0 ) Breaking point (5 2 ) Rubber plug (5 4) Snap end (5 6 ) Injection needle (6 0 ) Cover body (7 0 ) Supporting part (55 Α) Pusher head (5 7 A ) 〇 seat end (3 1 ) Inserting part (3 3 ) Fitting edge (3 5 ) Fitting part (4 1 ) Fitting space (4 3 ) O-ring (4 5 ) Fitting flange (4 7 ) Abutting end (5 1 ) Supporting end (5 3 ) Part (5 5 ) putter head (5 7 ) screw part (6 1 ) snap end (56A) 14