M340060 ，八、新型說明： 【新型所屬之技術領域】 本創作係有關一種注射針回縮式安 尤其是-種注射針於注射完畢後能回縮至改良 器之創新型態設計者。 、、、同體内的注射 【先前技術】 按’目前市場上的注射器大部份皆為傳統式 射針都是不帶有任何安全^ ' j文王衣置，非但可以重 易造成藥物及血液污毕，^ h 谷 ， 木加上注射針之鋰霞，番、生a、b 人員及清潔人員的刺傷，Λ π值九 更W成W護 明…^ 傳染病的流行；藉此遂有發 明人研發出一注射器，其注射器結構終 逐有么 第月多閱本國專利公報 弟9 1 1 3 2 9 6 8號所揭之「注鼾牡t 如箆1岡糾-、 射針回拉型注射器」（ ，其特色主要是在於：其内腔插有… 裝於針筒⑴前端部之針座"），安 •: 内腔並僅可朝後端侧脫離之襯套（5 )、 ^ α ^ Q 5 )刚鳊部之注射針（δ )，藉由 夕針筒（1 )前端部，使襯套（5 ) ，之卡合腳（7 )的回拉用突.f βb •卡合部（3 )卡入，大起（8 )與柱塞本體（2 )之 口可透過柱塞本體（2 )將注射針（6M340060, eight, new description: [New technology field] This creation is about an injection needle retraction type, especially the innovative type designer who can retract to the reformer after the injection. Injection, the same body [previous technology] According to the 'current syringes on the market are mostly traditional injection needles are not with any safety ^ 'J Wen Wang clothing, not only can easily cause drugs and blood Stained, ^ h valley, wood plus injection needle Lixia, Fan, raw a, b personnel and cleaning staff stabbing, π π value nine W W Wensing ... ^ infectious disease prevalence; The inventor developed a syringe, and the structure of the syringe was finally read. In the first month of the month, I read the national patent bulletin 9 1 1 3 2 9 8 8 "Note 鼾 t 箆 箆 冈 冈 冈 冈 、 、 、 、 、 、 、 、 The type of syringe (the main feature is that the inner cavity is inserted with a needle holder mounted on the front end of the syringe (1), and the inner cavity is only detachable from the rear end side of the bushing (5) , ^ α ^ Q 5 ) The injection needle (δ ) of the sacral canal, with the front end of the yoke (1), the pull-back of the bushing (5) and the engaging leg (7) is used. The engaging portion (3) is engaged, and the mouth of the large (8) and the plunger body (2) can penetrate the plunger body (2) to inject the needle (6).
)拉進針筒（1 )向 ^ L 内’精由形成於襯套（5 )前端部外周 面與針庙 乂、， 4 )刚缒部内腔面間之嵌合構造，使襯套（5 )保持於針座（A ^ 、， ^ 4 ) ’亚且襯套（5 )在相對於針座（4 之取月〇而側的散合狀態下，概套（5 )之前端在轴向位 於針座（zL、^ 則i而附近或位於較其更前方之位置； 5 M340060 • 淮此種習知結構型離於普μ 士 下述之間題點· 〜、於貫際使用經驗中發現仍存在 该槪套（5、 .卡合腳（7 ) 卡δ腳（7 )係呈二側對稱型態，當 .合部卡合完i的回拉用突起（8)與柱塞本體（2)之卡 時，其注射釺 才主塞本體（2 )於針筒（1 )内部回縮 •若朝内施力頂施6 )僅為平行狀回縮至針冑（1 )内部， .注射針（6)”筒（1)内部之柱塞本體⑴時，該 在安全防護留^ ^ 门（1 )外，以使該注射筒 更W下一危險因子，亦秘丄丄、 傷的機會。 亦“加&成醫護人員意外刺 疋以，針對上述習知安全注士 ，如何開發—# 湾、、Ό構所存在之問題點 裡更具一道防護性 用消費者所殷切企 >， 彳、笱創新結構，實使 標及方向。 系者須努力研發突破之目 有鐵於此，創作人本於多年 與設計經铪，处^ 爭相關產品之製造開發 τ、二驗’針對上述之目標 ι、r“ 終得-確具實用性之本創作。 °又。。審慎評估後， 【新型内容】 即’本創作之主要目的，係 安全注射器結構…其所欲解广一種注射針回 注：針回拉型注射器所存在之襯套：：：點：係針對 型態，俾當柱塞本體於針筒内部 ° :係呈二側 行狀回縮至針㈣，若朝内頂推=内其注射針僅 注射針仍有機會推出針筒外問題點加以=:桿時 M340060 • 而其解決問題之技術特點，主要係藉上 卡合部前端二側分設有不對稱的第二由έ亥推桿之彈性 下合腳刀證— ，，、中該第一卡合腳外側預定位置形 一卡合腳 ，桿之彈性卡合部卡入於針座之扣合槽内時凹，且該推 ‘之二外側係產生張力並迫壓於針座之扣人柚δ亥弹性卡合部 ^ σ槽内壁； 猎此創新獨特設計，使本創作之注 .面刺傷醫護人員及清潔人員，且具二道防^無法裸露於外 ，使用者僅能一次使用後完全回收銷毀，濩之自毁的功能 品、土}、一 h — ％ 又’以避免重覆佶ffl 而k成一次巧·染之實用進步性者。 设使用 【實施方式】 請參閱第2 注射器結構改良 用，在專利申請 首先，該安0 )及膠塞（2 一筒體（1 1 0 )内之前端 限位區（1 2 ) 針座於本實施例 )前端設有注射 部（2 2 )嵌卡 3 2 )之端緣位 3 0 )之外緣預 〜4圖所示，係 之較佳實施例， 上並不受此結構 本創作丨主射針回縮式 惟此等實施例僅供說 之限制。 全注射器 0 1 )組 0 )，其 形成有徑 内壁面係 係為黏針 針（3 1 配合之扣 置係朝内 定位置嵌 其係由 成，其 係概呈 向内縮 軸向組 式針座 )，後 合槽（ 凸設有 卡有0 筒體（ 中： 中空結構形態，該筒 之限位區（1 2 )， 裝有一針座（3 0 ) 形態’其中該針座（ 端更形成有提供彈性 3 2 ) ’其中該扣合 凸部（3 3 )，且針 形環（3 4 )，用以 0 推桿 安全 明之(2 體（ 且該 ，該 3 0 卡合 槽（ 座（ 密閉 7 M340060 •迫緊於限位區（1 2 )内壁； 一推杯（2 0 ) ’該桿段斷面係概呈十字形結構形態 ，且於預定彳干段位置形成有折斷處（2丄），該推桿（2 • 0 )刖端對應針座（3 〇 )之扣合槽（3 2)係延伸有彈 •性卡合。卩（2 2 )，該彈性卡合部（2 2 )恰可配合嵌插 於針座（3 0 )之扣合槽（3 2 ) θ，其中該彈性卡合部 .(2 2 )前端朝内部開設有迫壓空間（2 9 )，藉由迫壓 (2 9 )而7彈性卡合部（2 2 )二側分別形成有不 對=第一卡合腳（2 3 )及第二卡合腳（2 4 )，其中 Λ第 卡合腳（2 3 ，24)之前端位置各形成有錐 狀的導斜面（9 7、 " ，且導斜面（2 7 )之各相對後側位 3， 一 5 ，26)，而第一、二卡合腳（2 之二側邊因迫壓空間（2 9 ) 之適當彈性，去碟&上 叫，、有朝内&縮 〇 ) 田卡合部（2 2 )欲嵌插組入針座（3 υ j之扣合槽（ 卡合腳（2 3，）日夺（如第3圖所示），該第一、二 合槽（3 2 2 4 )之導斜面（2 7 )則先行導滑於扣 23， 凸邛（33)，前進時第一、二卡合腳（ 一、二卡人、、壓空間（29)内部壓縮，進入後第 即相對卡扣二(：3 ’ 2 4 )之各擋止部（2 5，2 6 ) 使彈性卡合部 達到相互緊密4人〜丁厘、。^ ^ 而本遣I σ狀態（如第4圖所示，， 預定位置形:J主要特徵在於該第-卡合㈣（2 3 )外側 於本實施例係：部⑴”其中該凹陷…8) U弧凹緣形態，且該推桿（2 〇 )之第一、 ‘· 、ϋ &槽（2 9、之各凸部（3 3 )定位，俾 與針座（30)之扣合槽（32) 8 M340060 一卡口腳（23 ’ 24)嵌卡於針座（3〇)之扣合槽（ 32)内日守，该第一、二卡合腳（23 ，24)之導斜面 (2 7 )外緣係羞座 生預疋張力，並相對迫壓於針座（3 〇 )之扣合槽（3 2 )内壁；) Pulling the syringe (1) into the inner wall of the sleeve (5) and the fitting structure between the outer surface of the sleeve (5) and the inner cavity surface of the shank, so that the sleeve (5) ) is held in the needle seat (A ^ , , ^ 4 ) ' and the bushing (5 ) is in the axial direction with respect to the needle seat (the side of the moon that is taken from the side of the moon) Located in the needle seat (zL, ^ then i is near or at a position further ahead; 5 M340060 • Huai is a well-known structure type from the point between the following: ·, in the experience of continuous use It is found that the 槪 sleeve is still present (5, the engaging leg (7) card δ foot (7) is in a bilateral symmetrical pattern, and when the merging portion is engaged with the i-retracting protrusion (8) and the plunger body ( 2) When the card is inserted, the main plug body (2) is retracted inside the syringe (1). If the inner force is applied to the top (6), it is only retracted to the inside of the needle (1). When the needle body (1) inside the needle (6)" (1) is used, the safety guard should be kept outside the door (1) so that the syringe is more dangerous and dangerous. Opportunity. Also "add & medical staff accidental hedgehog In view of the above-mentioned safety safety notes, how to develop - # 湾, Ό 所 所 所 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 更具 & & & & & & & The department must work hard to develop a breakthrough. The creator has been designing the scriptures for many years, and has been arguing for the manufacture and development of related products. The second test is aimed at the above objectives ι, r. The practicality of this creation. ° Again. After careful evaluation, [new content] that is, 'the main purpose of this creation, is the safety syringe structure...there is a wide range of injection needle reinjection: the needle back pull type syringe exists Bushing::: Point: For the type, when the plunger body is inside the syringe °: The system is retracted to the needle (4) in two rows. If the needle is pushed inward, there is still a chance that the needle will only be injected. The problem of the problem outside the syringe is put out =: M340060 when the rod is used. The technical feature of solving the problem is mainly due to the asymmetry of the second side of the front end of the engaging part. — ,,, the predetermined position outside the first engaging foot When the card is engaged with the foot, the elastic engaging portion of the rod is recessed in the engaging groove of the needle seat, and the outer side of the pusher is tensioned and pressed against the needle seat. ^ σ groove inner wall; hunting this innovative unique design, so that the creation of the note. Face stab medical staff and cleaning staff, and the two defenses can not be exposed, the user can only completely recover and destroy after one use, from Destroyed functional items, soil}, one h - % and 'to avoid repeating 佶ffl and k become a practical and progressive one." Use [Embodiment] Please refer to the second syringe structure improvement, in the patent Application First, the security 0) and the rubber plug (2 in the front end of the inner cylinder (1 1 0) (1 2) needle seat in the front end of the present embodiment) is provided with an injection part (2 2 ) embedded card 3 2 The edge of the edge 3 0 ) is shown in the outer edge of the figure 4, which is a preferred embodiment of the present invention, and is not subject to the structure of the present invention. . The whole syringe 0 1 ) group 0 ), which forms the inner wall surface system is a glue needle (3 1 is matched with the buckle system, and the system is formed by inwardly locking the axial group needle). Seat), rear joint groove (the convex card has a 0 cylinder (middle: hollow structure, the limit of the tube (1 2), equipped with a needle seat (30) form] where the needle seat (end Formed to provide elasticity 3 2 ) 'where the snap protrusion (3 3 ), and the needle ring (3 4 ) for the 0 push rod safety (2 body (and, the 30 0 card slot (seat (Closed 7 M340060 • Forced to the inner wall of the limit zone (1 2 ); a push cup (20) 'The section of the section is in the shape of a cross, and a break is formed at the predetermined dry section ( 2丄), the push rod (2 • 0) end of the corresponding needle seat (3 〇) of the snap groove (3 2) is extended with elastic and sexual engagement. 卩 (2 2 ), the elastic engagement part ( 2 2) Just fit the engaging groove (3 2 ) θ inserted into the needle seat (30), wherein the front end of the elastic engaging portion (2 2 ) is open to the inside with a pressing space (2 9 ), By pressure (2 9 ) and 7 bombs The two sides of the engaging portion (2 2 ) are respectively formed with a wrong pair = a first engaging leg (2 3 ) and a second engaging leg (2 4 ), wherein the front end positions of the first engaging legs (23, 24) are respectively formed with a cone The leading bevel (9, ", and the opposite side of the guiding bevel (2 7) are 3, a 5, 26), while the first and second engaging legs (the two sides of the two sides are forced by the space ( 2 9 ) Appropriate flexibility, go to the disc & call, there is inward & 〇 〇 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田 田2 3,) Days (as shown in Figure 3), the guiding slopes (2 7 ) of the first and second slots (3 2 2 4 ) are first guided to the buckle 23, the tongue (33), forward When the first and second clamping legs (one, two card people, and the pressure space (29) are internally compressed, the corresponding blocking portions (2 5, 2 6 ) of the first two buckles (: 3 ' 2 4 ) are entered. The elastic engagement portion is brought into close contact with each other by 4 persons, and the position of the I σ is as shown in Fig. 4, and the predetermined position shape: J is mainly characterized by the first engagement (four) (2 3 ) The outer side is in this embodiment: part (1)" wherein the recess ... 8) U arc concave Form, and the first, '·, ϋ & slot of the pusher (2 〇) (2, each convex part (3 3 ) is positioned, and the snap groove (32) of the cymbal and the needle seat (30) 8 M340060 One card foot (23 ' 24) is embedded in the snap groove (32) of the needle seat (3〇), and the first and second clamping legs (23, 24) are outside the guiding slope (27) The edge of the shyness is pre-tensioned and relatively pressed against the inner wall of the snap groove (3 2 ) of the needle seat (3 ;);
藉此， 回縮推桿（ 二側緣則藉 2 )，當針 )外緣則為 合腳（2 3 0 )之扣合 0 )於筒體 (3 0 )之 卡合腳（2 2 0 )回縮 即呈歪斜狀 0 ) —端的 以無法推至 ，使用者可 令推桿（2 圖所示）； )無法裸露 護之自毁的 以避免重覆 請參閱 當推桿（2 2 〇 )及針 由回縮作用 座（3 〇 ) 不受力之自 ’ 2 4 )朝 槽（3 2 ) (1 〇 )内 歪斜方向係 3 )之凹陷 至極限時， 隱藏容置於 收縮擋面（ 筒體（1 〇 再施力折斷 〇 )無法再 藉此創新獨 於外面刺傷 功能，使用 使用而造成 第6圖所示 0 )嵌卡入 座（3 0 ) 而離開筒體 離開限位區 由狀態，繼 外撐開之張 内壁因受張 呈偏擺變形 令其一凸部 部（2 8 ) 該針座（3 筒體（1 0 1 1 )以擋 )外，此為 推桿（2 0 次使用，此 特設計，使 醫護人員及 者僅能一次 二次污染之 ，其係本創 針座（3 0 時，該針座 (1 〇 )之 (1 2 )時 而，並藉由 力作用，而 力迫壓，以 之歪斜狀態 (3 3 )端 位置，再者 〇 )之注射 )内，並藉 止注射針（ 第一道安全 )之折斷處 為第二道防 本創作之注 清潔人員， 使用後完全 貫用進步性 作之第二實 )後並施力 (3 0 )之 限位區（1 針座（3 〇 第一、二卡 使針座（3 使針座（3 ，且該針座 抵靠於第一 ，當推桿（ 針（3 1 ) 由筒體（1 3 1 )端部 防護，更者 (21)， 護（如第5 射針（3 1 且具二道防 回收銷毀， 者。 施例，所述 9 M340060 之針座係為可^ * L , 換針式針座形態，其主要係針座（2 〇 B ) :=:置設有0形環（…），内部凹設有扣合槽 B 、，扣5槽（22B)之外緣凸設有凸部（23 月〗知延伸有推拔面之注射針插座（2 5 B )及固 .鎖螺紋（2 7 r1 B )之相對位置設有一注射針（2 6 B )， 且注射針（？ Ώ、 ^ 6 Β )可順固鎖螺紋（2 7 Β )旋入注射針 ** 插座（2 5 ft、 )，以提供更換及固鎖注射針（2 6 B )之 I -目的者。 請參閱第7 # 之針座俜為τ施 係本創作之第三實施例，所述 〇D)4r針座之另一形態，其主要係針座（2 扣合槽（2 9 η Λ /衣（2 1 D )，内部凹設有 (2 3 D )， 山 曰（2 2 D )之外緣凸設有凸部In this way, the retracting push rod (the two side edges are borrowed by 2), when the outer edge of the needle) is the fit of the foot (2 3 0) 0) the back of the cylinder (30) (2 2 0) The contraction is skewed 0) - the end can not be pushed, the user can make the putter (2);) can not be exposed to self-destruction to avoid repeating, please refer to the putter (2 2 〇) and When the needle is recessed from the retracting seat (3 〇) from the '2 4 ' to the groove (3 2 ) (1 〇) in the direction of the skew (3 )), the recess is placed on the contraction stop (barrel) (1 〇 施 施 〇 〇 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) The outer wall of the outer struts is deformed by the slanting force to make a convex part (2 8 ). The needle seat (3 cylinder (1 0 1 1 ) is blocked), this is a push rod (20 times use) This special design enables the medical staff and the person to only have a secondary pollution once. It is the original needle holder (at 30 °, the needle seat (1 〇) (1 2) sometimes, and by force, and Pressurize, in the position of the skewed state (3 3 ), and then the injection), and the break of the injection needle (the first safety) is the second person to prevent the creation of the cleaning personnel, use After the complete use of the progressive second, the force limit (3 0) of the limit zone (1 pin seat (3 〇 first, two card makes the needle seat (3 makes the needle seat (3, and the needle The seat abuts against the first, when the push rod (needle (3 1 ) is protected by the end of the barrel (1 3 1 ), the more (21), the protection (such as the 5th shot (3 1 with two anti-recycling) Destruction, the case, the 9 M340060 needle seat system can be ^ * L, needle-changing needle seat form, the main needle seat (2 〇 B): =: with a 0-ring (...) The inner recess is provided with a snap groove B, and the outer edge of the buckle 5 slot (22B) is convexly provided with a convex portion (23 months), the needle socket (2 5 B ) extending with the push-out surface and the solid locking thread ( 2 7 r1 B ) is provided with an injection needle (2 6 B ), and the injection needle (? Ώ, ^ 6 Β ) can be screwed into the needle ** socket (2 5 ft) , ), to provide a replacement and lock needle (2 6 B ) I - Purpose. Please refer to the third embodiment of the 7th needle 俜 俜 τ τ τ τ τ τ τ τ 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一 另一9 η Λ / clothing (2 1 D ), inner concave (2 3 D), haw (2 2 D) outer edge convex with convex
)之相對位置嗖有、u 拔面之注射針插座（2 5 D ”可順注射針插座（25d”D)b且注射針（26 >換及固定注射針（2^ D)插入迫緊定位，以提供更 V乙13 13 )之目的者。 功效說明 本創作功效增進之事實如下： gP ，本創作 注射器結構改二的，係在提供-種注射針回縮式安全 針回拉型注射1:所：Γ解決之問題點，係、針對習知注射 母τ σσ所存在之襯套 態，俾當柱塞本I* y ~ 卡& P係呈二側對稱型 狀回縮至針回縮時，其注射針僅為平行 射針仍有機會推針;：：推針筒内部， 间外問相加以改良突破；而其解決 10 M340060 問題之技術特點，纟要係藉由該推桿（2 〇 )之彈性卡合 部（2 2 )前端二側分設有不對稱的第_卡入腳（2 3 )" 及第二卡合腳（24) ’其中該第—卡合腳；23)外側 預定位置形成有凹陷部（2 8 )’且該推桿（ 性卡合部（22)卡入於針座（3〇)之3入 内時，該彈性卡合部（2 2 )之二口 5 s 32) 於針座（…之扣合，（32)内卜：^生張力並迫壓 計，使本創作之注射針（31)無法裸:猎此創新獨特設 人員及清潔人員，i具二道防護之自毀：於外面刺傷醫護 能-次使用後完全回收銷毀，以避免重港功能’使用者僅 污染之實用進步性者。 I使用而造成一次 上述實施例所揭示者係藉以具體說曰 雖透過特定的術語進行說明，當不能以^本創作，且文中 之專利範圍；熟悉此項技術領域之人士 ^限疋本新型創作 之精神與原則後對其進行變更與修改而^可在瞭解本創作 而此等變更與修改，皆應涵蓋於如后 丨等放之目的， 所界定範B壽中。 34之申請專利範圍 M340060 【圖式簡单說明】 第1圖：係習知安全注射針之組合剖視圖。 第2圖：係本創作安全注射針之動作示意圖一，其係顯示 推桿之彈性卡合部未篏卡於針座之扣合槽狀態。 第3圖：係本創作安全注射針之動作示意圖二，其係顯示 推桿之彈性卡合部預備欲卡針座之扣合槽狀態。 -第4圖：係本創作安全注射針之動作示意圖三，其係顯示 _ 推桿之彈性卡合部已嵌卡針座之扣合槽狀態。 第5圖··係本創作安全注射針之動作示意圖四，其係顯示 推桿回縮時，針座於筒體内呈偏擺歪斜狀態，使 用者並施力折斷推桿之折斷處者。 第6圖：係本創作之第二實施例，其係顯示該針座為可換 針型態。 第7圖：係本創作之第三實施例，其係顯示該針座為可換 針之另一型態。 【主要元件符號說明】 習知部份： 柱塞本體（2 ) 針座（4 ) 注射針（6 ) 回拉用突起（8 ) 擋面（1 1 ) 針筒（1 ) 卡合部（3 ) 襯套（5 ) 卡合腳（7 ) 本創作部份： 筒體（1 0 ) 限位區（1 2 ) 12 M340060 推桿（2 Ο ) 折斷處（2 1 ) 第一卡合腳（2 3 ) -擋止部（2 5 ) ，導斜面（2 7 ) 迫壓空間（2 9 ) •針座（3 0 ) _扣合槽（3 2 ) ) 〇形環（3 4 ) 針座（2 0 B ) 扣合槽（2 2 B ) 注射針插座（2 5 B ) 固鎖螺紋（2 7 B ) 針座（2 0 D ) 扣合槽（2 2 D ) k注射針插座（2 5 D ) 膠塞（2 0 1 ) 彈性卡合部（2 2 ) 第二卡合腳（2 4 ) 擋止部（2 6 ) 凹陷部（2 8 ) ,注射針（3 1 ) 凸部（3 3 ) 0形環（2 1 B ) 凸部（2 3 B ) 注射針（2 6 B ) 0形環（2 1 D ) 凸部（2 3 D ) 注射針（2 6 D ) 13The relative position of the 嗖, u pull the needle socket (2 5 D ” can be needle needle socket (25d” D) b and the injection needle (26 > change the fixed needle (2 ^ D) into the compression Positioning to provide more V B 13 13). Efficacy Description The effectiveness of this creation is enhanced as follows: gP, the structure of the creation of the syringe is changed to two, is to provide a kind of injection needle retractable safety needle pull-back injection 1: All: Γ solve the problem, the system, the bushing state exists for the conventional injection mother τ σσ, when the plunger I* y ~ card & P system is retracted to the needle in a bilaterally symmetrical shape When retracting, the injection needle is only a parallel shot needle, there is still a chance to push the needle;:: push the inside of the syringe, and the external and external problems are added to improve the breakthrough; and the technical characteristics of the 10 M340060 problem are solved by the push The front end of the elastic engaging portion (2 2 ) of the rod (2 )) is provided with an asymmetric first card insertion pin (2 3 ) " and a second engaging leg (24) 'where the first engaging leg; 23) When the outer predetermined position is formed with a recessed portion (28), and the pusher (the sexual engagement portion (22) is engaged with the needle holder (3〇), the bullet The engagement part (2 2 ) of the two mouths 5 s 32) in the needle seat (...the buckle, (32) inside the cloth: ^ raw tension and pressure gauge, so that the injection needle (31) of this creation can not be naked: hunting This innovation uniquely sets up personnel and cleaning staff, i self-destructive with two protections: stabbing medical care outside - fully recovered and destroyed after use, to avoid heavy port function 'users only polluting practical progress. I use The ones disclosed in the above embodiments are specifically explained by specific terms, and cannot be created by the text, and the scope of patents in the text; those skilled in the art are limited to the spirit of the novel creation. Changes and modifications to the principles can be made in the understanding of the creation and such changes and modifications should be covered in the purpose of such as the post-mortem, defined in the scope of the life of the B. 34 patent application scope M340060 [Figure Brief Description: Fig. 1 is a sectional view of the combination of the conventional safety injection needle. Fig. 2 is a schematic diagram of the operation of the safety injection needle of the present invention, which shows that the elastic engagement portion of the push rod is not stuck in the needle seat. Buckle slot status. Figure 3: Department The second schematic diagram of the action of creating a safe injection needle is to show the state of the engagement groove of the needle engagement seat of the elastic engagement part of the push rod. - Fig. 4: The action diagram of the safety injection needle of the present creation is shown in Figure 3 The elastic engaging portion of the push rod has been inserted into the engaging groove state of the card holder. Fig. 5 is a schematic diagram of the action of the safety injection needle of the present invention, which shows that when the push rod is retracted, the needle seat is in the cylinder body. The yaw state is skewed, and the user applies force to break the break of the push rod. Fig. 6 is a second embodiment of the present invention, which shows that the needle seat is a replaceable needle type. Fig. 7: A third embodiment of the creation shows that the hub is another type of needle changeable. [Main component symbol description] Conventional part: Plunger body (2) Needle seat (4) Injection needle (6) Pull-back protrusion (8) Stop surface (1 1 ) Needle barrel (1 ) Engagement part (3 Bushing (5) Engagement foot (7) Original part: Cylinder (1 0) Limiting area (1 2 ) 12 M340060 Putter (2 Ο) Breaking point (2 1 ) First engaging foot (2 3 ) - stop (2 5 ), guide slope (2 7 ) forced space (2 9 ) • needle seat (3 0 ) _ fastening groove (3 2 ) ) 〇 ring (3 4 ) needle seat (2 0 B ) Buckle groove (2 2 B ) Needle socket (2 5 B ) Lock thread (2 7 B ) Needle seat (2 0 D ) Buckle groove (2 2 D ) k needle socket (2 5 D ) rubber stopper (2 0 1 ) elastic engagement portion (2 2 ) second engagement leg (2 4 ) stopper (2 6 ) recessed portion (28), injection needle (3 1 ) convex portion (3 3 ) 0-ring (2 1 B ) convex (2 3 B ) injection needle (2 6 B ) 0-ring (2 1 D ) convex (2 3 D ) injection needle (2 6 D ) 13