M269076 八、新型說明： 【新型所屬之技術領域】 本創作係一種應用於醫療領域且能增進使用安全之注 射器，尤指一種以大氣壓力回收注射針且構造簡單生產成 本低的氣壓推回式安全注射器。 【先前技術】 醫護人員在使用注射筒注射藥劑或抽血檢驗時，於蓋 ^針頭蓋的過程常被針頭所刺傷，而不少疾病例如肝炎或 愛滋病皆是透過血液咸举，告盤# ^ 從u木田醬護人員被刺傷時傷口會接 觸到病人的體液，因而使得醫罐A g 便仔西4人貝暴露在感染疾病的高 風險底下，因此有安全針筒的 N J °又寸及推出，為避免此問題 的發生。 而既有的安全針筒存在著一些使用上的問題，請來考 證書號第M241G49號「可單手操作的回拉式安全注射器 」新型專利案，其於針筒中的 g 一* r π針碩及柱塞各於相對處形成 一第一啣接部與第二啣接部，蕻 错由苐—啣接部與第二啣接 4相互的卡扣’拉動柱塞將針頭拉回針筒中。 上述女全注射器在製造時形 丁〜风ό午多的彎折，呈有旎雜 的形狀，因此必須使用精产古的h 八有稷雜 搰度回的杈具生產，而精度高的模 具除了價袼貴而增加生產成本 、 ^ ^ ^ 本的問喊外，由於生產成本的 k呵會使得安全注射器的價 丨貝t叔河，使它的售價不具競爭 刀，故此成本較一般的針筒高 -^ + 山汁夕的女全注射器由於價 杧的因素而無法普及，甚為可惜。 、 除了成本問題外，安全、、拿似σσ丄 女王左射态在使用時也有一些缺點 M269076 ，一般人對注射此種侵入性的醫療手段或多或少都懷有恐 懼，而在為患者注射藥劑時，當第一啣接部與第二啣接部 相互卡合會發出清脆的聲響，此聲響對於恐懼打針的患者 來虎更疋窵嚇，對於患者就醫時的心情影響不可謂不大， 也降低醫療院所採用此種安全注射器的意願。 【新型内容】 由於既有的安全注射器具有成本高而不易普及，以及 使用過程中發出聲響等缺點，本創作提供一種氣壓推回式 安全注射器，主要以簡單的構造來達成安全使用的目的並 解決上述問題。 為達到上述目的，本創作係包括·· 一注射筒，其設有一筒狀本體，並於筒狀本體的一端 外周形成敎，内周環繞間隔形成複數道防轉凸條，筒狀 本體於另一端向外突伸形成一擋緣； -針座，其包括一針頭、一針座本體及一塞體，該針 座，體的周壁設有與防轉凸條相互卡制的直凸條而設於注 射筒内-端’並於前端伸設一伸出該筒狀本體外的針頭聯 結部，針頭聯結部外周的後段設有螺紋，並於其中設有一 引流道，該針座本體於後端向内形成一容置槽，該容置槽 與引流道相通，針座本體並於容置槽周面間隔設有_道^ 上一端由該針座本體後端開口的長槽狀流道，該針頭係結 合於該針座本體的針頭聯結部外端，s體係高度大於各流 道長度的圓柱形體，該塞體係部分塞設於容置槽中而遮蓋 各流道的一部分； … .M269076 一上蓋，該上蓋設有螺紋以與筒狀本體一端的螺紋相 對應而旋人’ i蓋對應該針頭聯結部的螺紋於中央形成一 定位螺孔而旋固針頭聯結部’藉此定位該針座；以及 一推桿’該推桿前端形成—推桿活塞，推桿係以推桿 活塞容置於該注射筒的筒狀本體中。M269076 8. Description of the new type: [Technical field to which the new type belongs] This creation is a syringe that can be used in the medical field and can improve the safety of use, especially a pneumatic push-back safety that recovers injection needles with atmospheric pressure and has a simple structure and low production cost. syringe. [Prior art] When using medical syringes to inject medicaments or take blood tests, the process of covering the needle cover is often punctured by the needle, and many diseases such as hepatitis or AIDS are raised through the blood. When the Mutian sauce staff was stabbed, the wound would come into contact with the patient's body fluids, so that the medical tank A g Benzixi 4 person shellfish was exposed to the high risk of infection. Therefore, the safety of the syringe NJ ° To avoid this problem. There are some problems with the existing safety syringes. Please consider the new patent case of Certificate No. M241G49 "Single-handed Pull-back Safety Syringe". The g- * r π needle in the syringe The plunger and the plunger each form a first engaging portion and a second engaging portion, and by mistake, the snap-fit of the engaging portion and the second engaging portion 4 pulls the plunger back to the syringe. The above-mentioned women's full syringes are shaped at the time of manufacture. They have many bends and have a mixed shape. Therefore, they must be produced by using ancient-made H-8 mixed-type bifurcated tools with high precision. In addition to the expensive price and the increase in production costs, ^ ^ ^ this question, because the production cost will make the price of the safety syringe 丨 bet t river, making it sold without a competitive knife, so the cost is more general It is a pity that the high- ^ + syringe full female syringe of Yamazuki cannot be popularized due to the high price. In addition to the cost problem, the safe and secure σσ 左 queen left-shot state also has some shortcomings when using it. Most people have more or less fear of injecting this invasive medical method, while injecting drugs into patients. At that time, when the first connection part and the second connection part are engaged with each other, a clear sound will be emitted. This sound is more intimidating for patients who are afraid of injections, and it has a small impact on the mood of patients when they seek medical treatment. Reduce the willingness of medical institutions to adopt such safety syringes. [New content] Due to the shortcomings of the existing safety syringes, such as high cost and difficulty in popularization, and sounds during use, this creation provides a pneumatic push-back safety syringe, mainly with a simple structure to achieve the purpose of safe use and solve The above problem. In order to achieve the above purpose, the creative department includes an injection cylinder provided with a cylindrical body and forming a cymbal on the outer periphery of one end of the cylindrical body, and a plurality of anti-rotation convex strips are formed around the inner periphery. One end protrudes outward to form a retaining edge; a needle base, which includes a needle, a needle base body, and a plug body, and the peripheral wall of the needle base is provided with a straight convex strip which is interlocked with the anti-rotation convex strip and It is set at the inner-end of the syringe and a needle connection part protruding from the cylindrical body is extended at the front end. The rear part of the outer periphery of the needle connection part is provided with a thread, and a drainage channel is provided therein. The needle seat body is at the rear end. An accommodating groove is formed inwardly, the accommodating groove is communicated with the drainage channel, and the needle seat body is provided with _ channels at a distance from the peripheral surface of the accommodating groove. The needle is connected to the outer end of the needle connection part of the needle base body, and the s system is a cylindrical body whose height is greater than the length of each flow channel. The plug system is partially plugged in the receiving groove to cover a part of each flow channel; ... M269076 A cover, the cover is provided with a thread The screw thread corresponds to the rotation of the 'i cap to form a positioning screw hole in the center corresponding to the thread of the needle connection portion and screw the needle connection portion' to position the needle seat; and a push rod 'the front end of the push rod is formed-push The rod piston and the push rod are accommodated in the cylindrical body of the injection cylinder with the push rod piston.
進-步’本創作將針座本體其針頭聯結部的前側設為 錐狀而結合所述針頭，並且料上蓋的定位螺孔略大於所 述針頭而可容針頭通過，於針座本體周面朝内側的-端環 設有-環突起的氣密環，該氣密環外端抵靠所述筒狀本體 的内壁’藉此’使得該針座定位更佳且氣密性更好。 更進-步，本創作於塞體内穿設有一辅助流道，該輔 助流道-端開口朝向容置槽内，另一端由塞體周壁未塞設 於容置槽内且未對應各流道的一側開口。 更加容易’於該推 口，並且本創作針 又’本創作為使推桿於使用後彎折 才干接近其推桿活塞的部分設有一彎折凹 頭可以一體形成於針頭聯結部。 本創作使用抽取藥液或血液時，液體經由針頭、引流 道及流道後進人該筒狀本體中，當使用完畢後，係藉由該 推柃以其推桿活塞將該塞體推入該針座本體的容置槽中， 藉此封閉各流道造成氣密’後旋開上蓋離開筒狀本體，同 時旋動離開與定位螺孔相螺合定位的針座，然後將推桿向 後拉’造成塞體與針座之間真空，利用大氣的壓力將針座 向注射筒回收，即達成本創作安全使用的目的。 因此各部的設計及形 本創作以大氣壓力來回收針座 6 M269076 狀構造皆簡單，不若既有的安全針筒因要相互嵌扣而需以 複雜形狀的設計以達成功效，相較之下，本創作具有以下 優良特性： 1、本創作構造簡單，不需使用精密的模具射出成型 即能達到安全使用的目的，容易製造而能有效降低成本， 具有價格上的競爭力，甚至在價格上與一般的注射針筒無 異，使得本創作能有效普及，讓大眾加以運用。 2、本創作並非使用相扣的方式回收針座在運用於 注射樂液的過程中不會產生清脆㈣響，不會造成被 的患者恐慌。 【實施方式】 _本創作係—種氣壓推回式安全注射器，請參看第一至 二圖的第一較佳實施例，其設有： 一注射筒（1 〇 )，注射铃γ , A、 筒狀本體有一圓筒狀的 ^ 两狀本體（1 1 )於其外周的一端 一段螺紋（12) ’並且於形成螺紋（12) -端的内’ =繞間::設有複數道防轉凸條（"），各防轉凸二 1 3 )的没置方向係平杆铃 ^ 々 ，、千饤同狀本體（1 1 )的軸向方向， 同狀本體（1 1 )於未設有 累、、文1 2 )的另一端由周面 兩側分別向外突伸形成_翼片狀的擋緣（14)。 針座（2〇) ’其包括一針頭（21)、一筒狀的 本體（22)及-部分容置於該針座本體（22)中 的塞體（23A)，其中： 甲 針座本體（22)係圓筒形並位於筒狀本體 M269076 中設有螺紋⑴）的—端 隔對應各防轉凸條（j 本體（2 2 )周面間 條（2 2 i )，各直凸 U目互卡制的直凸 狀本體（i i )的軸向 3又置的方向係平行筒 面對應卡制各直凸條（2 得凸條（1 3 )以側 筒狀本體（1 ])祐絲 , (2 0 )不此相對 ^丄丄）方疋轉，針座本體（2 側的一端環設有—環突^ ^周面於朝内 0 0 衣大起的氣密環（222)，氣斑俨r 2 2 2 )的外端抵靠筒狀本體（⑴的内壁，…（ 狀二二體：22)*前端的中央朝前伸設-伸出該筒 =(1)外的針頭聯結部（2 2 3 )，針頭聯結部 ^ 外周的後段設有一段螺紋（2 2 4 )，且針頭Further step-in this creation, the front side of the needle connection part of the needle base body is set to be tapered to combine the needle, and the positioning screw hole of the material cover is slightly larger than the needle to allow the needle to pass through, and on the peripheral surface of the needle base body The inner-end ring facing the inner side is provided with an air-tight ring with a ring-shaped protrusion. The outer end of the air-tight ring abuts against the inner wall of the cylindrical body 'by this' so that the needle seat is better positioned and air-tight. Going one step further, this creation has an auxiliary flow channel running through the plug body. The auxiliary flow channel-end opening faces into the accommodation groove, and the other end is not plugged into the accommodation groove by the peripheral wall of the plug body and does not correspond to each flow. One side of the road is open. It ’s easier to put it on the push port, and this creative needle is also designed to make the push rod bend after use. The part that is close to its push rod piston is provided with a bent concave head that can be integrally formed on the needle joint. In this creation, when liquid medicine or blood is drawn, the liquid enters the cylindrical body through the needle, the drainage channel and the flow channel. After the use is completed, the plug is pushed into the plug body by the pusher with its push rod piston. In the accommodating groove of the needle base body, thereby closing each flow path to cause airtightness, unscrew the upper cover to leave the cylindrical body, and at the same time, rotate away from the needle base screwed into position with the positioning screw hole, and then pull the push rod backward 'As a result of the vacuum between the plug body and the needle seat, the pressure of the atmosphere is used to recover the needle seat to the syringe, which achieves the purpose of cost creation and safe use. Therefore, the design and shape creation of each department is based on atmospheric pressure to recover the needle seat. 6 M269076 The structure is simple. It is not necessary that the existing safety syringes need to be designed with complex shapes to achieve effectiveness because they are to be engaged with each other. This creation has the following excellent characteristics: 1. This creation has a simple structure, which can be used safely without the need of precision mold injection molding, easy to manufacture and can effectively reduce costs, and has price competitiveness, even price. It is no different from ordinary injection syringes, so that this creation can be effectively popularized and used by the public. 2. This creation does not use the interlocking method to recover the needle seat. When it is used in the process of injecting the music liquid, it will not produce a crisp noise, and it will not cause panic to the patient. [Embodiment] _This creative system—a pneumatic push-back safety syringe, please refer to the first preferred embodiment of the first to second figures, which is provided with: a syringe (10), an injection bell γ, A, The cylindrical body has a cylindrical ^ two-shaped body (1 1) with a thread (12) 'on one end of its outer periphery and forming a thread (12)-inside of the end' = winding space: provided with a plurality of anti-rotation protrusions (&Quot;), the direction of disposition of each anti-rotation convex 2 1 3) is a flat bar bell ^ 々, the axial direction of the same-shaped body (1 1), the same-shaped body (1 1) is not set The other end of the tired, essay 1 2) from the two sides of the peripheral surface protrudes outward to form a wing-shaped retaining edge (14). Needle base (20) 'It includes a needle (21), a cylindrical body (22), and a plug body (23A) partially accommodated in the needle base body (22), wherein: a needle base body (22) is cylindrical and is located in the cylindrical body M269076 with threaded ⑴)-the end spacers correspond to the anti-rotation convex strips (j body (2 2) peripheral space strips (2 2 i), each straight convex U The direction of the axial direction of the straight convex body (ii), which is made of each other, is parallel to the cylindrical surface, and the straight convex pieces (2 are convex pieces (1 3), and the side cylindrical body (1)) ,, (2 0) not opposite 丄 丄 疋) square turn, the needle seat body (an end ring on the 2 side is provided with a ring ring ^ ^ airtight ring (222) around the outer surface 0 0 The outer end of the air spot 俨 r 2 2 2) abuts against the cylindrical body (the inner wall of the ⑴, ... (形 二 二 体: 22) * The center of the front end is extended forward-extending the tube = (1) outside Needle coupling part (2 2 3), the needle coupling part ^ is provided with a section of thread (2 2 4) at the back of the outer periphery, and the needle
Up ( 2 2 3 )的前側為錐形，針頭聯結部（2 2 3 ) 亚於其中形成一貫通的引流道（225)， 針座本體（22)於後端的端面中央向内形成一容置 槽（2 2 6 )，在本較佳實施例中該容置槽（2 2 6 )係 圓$並與引流道（2 2 5 )相通’針座本體（2 2 )並於 鄰谷置槽（2 2 6 )周面處間隔形成一道以上平行針座 本體（2 2 )轴向且一端開口的流道（2 2 7 )，各流道 (2 2 7 )係長槽狀，在本較佳實施例中係於該針座本體 (22)形成四道流道（227)，並且各流道（227 )的長度短於該容置槽（226)的深度； 針頭（2 1 )係套設結合於該針頭聯結部（2 2 3 ) 的前端且與引流道（2 2 5 )相通，此外，針頭（2 1 ) 亦可與針頭聯結部（2 2 3 )前端形成一體成型； •M269076 塞體（2 3 A、# p , ^係圓柱形並以外壁抵靠容置槽（2 2 6)槽周而具有—定 疋磨擦力，且塞體（23A)高度大於 各流迢（2 2 7 )的且ώ 丄 長度，在本較佳實施例中，該塞體（ 23Α)的高度等於 、置槽（226)的深度，該塞體（ 以部分密合塞設於容置槽（2 2 6 )中，並且 塞體（23Α)僅说笨& + — 僅遮盍各流道（2 2 7 )的部分。 筌舻 （3 〇 )’該上蓋（3 0 )係具有底板的圓形 盍體，亚於内形成内用 u# / 周面’上盍（30)對應筒狀本體（ )一端的螺紋（1 2 )於内周面形成螺紋（3丄）而 :走：，：對應針頭物（22”於底板中央向前延伸 Π:套筒？ 2)，於套筒（川形成-定位螺孔（ ’上盖（3 〇 )以定位螺孔（3 3 部（2 2 3 )的螺紋f q 1、朴 ’、、、、（ 2 2 4 )，藉此定位該針座（2 2 _)而°亥疋位螺孔（3 3 )略大於該針頭（2 1 )，使針 碩（2 1 )可通過該定位螺孔（3 3 )。 心一/^(4()) ’該推桿（4㈡係桿狀並於前端的 圍形成環狀軟塞而構成推桿活塞（41)，該推桿（4 ==桿活塞（41)容置於該注射冑（ι〇)的筒 1 )中’该推桿（4 〇 )並於接近推桿活塞（ 1 )的部分形成一彎折凹口（ 4 2 )。 ▲本創作有其他實施的態樣，請參看第七，八圖的第二 車乂佳貫施例，其改良了第—較佳實施例中的塞冑（2 3 a )，第二較佳實施例的塞體（23B)内穿設有—輔助流 、（2 4 B )，輔助流道（2 4 B ) S有三開σ ,其中一 9 .M269076 開口設於塞體（23B)的前面而朝向朝向容置槽（22 6)内，另兩開口係由塞體（23B)周壁未塞設於所述 容置槽（2 2 6 )内且未對應各流道（2 2 7 )的兩側開 口’在第二較佳實施例中，辅助流道（2 4 B )設於周壁 的開口也可僅設有一個。 以下以第一較佳實施例說明本創作實施方式，本創作 使用抽取藥液時，請參看第二圖，拉動該推桿（4 〇 )帶 動其推桿活塞（4 1 )向後抽液，此時液體係由該針頭（ 2 1 )依序經由該引流道（2 2 5 )、流道（2 2 7 )後 流入該筒狀本體（1 i )中，然後反向推動推桿活塞（4 1)將筒狀本體（1 1)中的空氣推出筒狀本體（丄工） 外，避免注射藥劑時將空氣打入人體中，待使用注射時， 將針頭（2 1 )插入患者，然後推動推桿（& 〇 )將華 劑由該針座本冑（22)的流道（2 2 7 )經^丨流^ 225)再由針頭（2 1)送出。The front side of Up (2 2 3) is tapered, the needle connection part (2 2 3) forms a through drainage channel (225) therein, and the needle base body (22) forms an accommodation inward at the center of the end face of the rear end The groove (2 2 6). In the preferred embodiment, the accommodating groove (2 2 6) is round and communicates with the drainage channel (2 2 5). The needle base body (2 2) is arranged in the adjacent valley. (2 2 6) One or more parallel flow passages (2 2 7) axially and open at one end are formed at intervals on the circumferential surface, and each flow passage (2 2 7) is a long groove, which is preferred in the present invention. In the embodiment, four flow channels (227) are formed on the needle base body (22), and the length of each flow channel (227) is shorter than the depth of the accommodation groove (226); the needle (2 1) is sleeved It is combined with the front end of the needle connection part (2 2 3) and communicates with the drainage channel (2 2 5). In addition, the needle (2 1) can also be integrated with the front end of the needle connection part (2 2 3); • M269076 plug The body (2 3 A, # p, ^ is cylindrical and its outer wall abuts the groove of the receiving groove (2 2 6) and has a fixed friction friction force, and the height of the plug body (23A) is greater than that of each flow head (2 2 7) and free length, in this comparison In the embodiment, the height of the plug body (23A) is equal to the depth of the receiving groove (226). The plug body (a part of the tight plug is provided in the receiving groove (2 2 6), and the plug body (23A) is only Say dumb & + — only cover the parts of each flow channel (2 2 7). 筌 舻 (30) 'The upper cover (3 0) is a round carcass with a bottom plate, which is formed in the inner part. / Circumferential surface (30) corresponding to the thread (1 2) on one end of the cylindrical body () forms a thread (3 °) on the inner peripheral surface. Π: sleeve? 2), in the sleeve (Sichuan formation-positioning screw holes ('upper cover (30)) to locate the screw holes (33 3 (2 2 3) thread fq 1, Park' ,,,,, (2 2 4), thereby positioning the needle base (2 2 _) and the screw hole (3 3) of the helium position is slightly larger than the needle (2 1), so that the needle master (2 1) can pass through the positioning screw hole (3 3). Xinyi / ^ (4 ()) 'The putter (4㈡ is rod-shaped and forms a ring-shaped soft plug around the front end to form a putter piston (41), and the putter (4 == rod The piston (41) is accommodated in the cylinder (1) of the injection tube (ι〇) 'the push rod (40) and A bending notch (4 2) is formed near the part of the plunger piston (1). ▲ There are other implementations of this creation. The plug body (2 3 a) in the first preferred embodiment, the plug body (23B) of the second preferred embodiment is provided with an auxiliary flow, (2 4 B), and an auxiliary flow passage (2 4 B ) S has three openings σ, one of which 9.2692696 is set in front of the plug body (23B) and faces toward the receiving groove (22 6), and the other two openings are not plugged by the wall of the plug body (23B) The two sides of the receiving groove (2 2 6) that do not correspond to the respective flow channels (2 2 7) are open. In the second preferred embodiment, the opening of the auxiliary flow channel (2 4 B) provided on the peripheral wall may be only There is one. The first preferred embodiment is used to describe this creative implementation. When using this solution to extract liquid medicine, please refer to the second figure. Pull the push rod (40) to drive the push rod piston (4 1) to pump liquid backward. The time-liquid system flows from the needle (2 1) through the drainage channel (2 2 5), the flow channel (2 2 7) into the cylindrical body (1 i), and then pushes the push rod piston (4) in the opposite direction. 1) Push the air in the cylindrical body (1 1) out of the cylindrical body (masonry), avoid injecting air into the human body when injecting the medicine, when the injection is used, insert the needle (2 1) into the patient, and then push The push rod (& 〇) sends the Chinese medicine from the flow channel (2 2 7) of the needle base (22) through ^ 丨 flow 225), and then sends out the needle (2 1).
★當本創作使用完畢後欲回收針座（2 〇 )時，請參看 第—及第三至六圖’推動推桿（4 0 )使以推桿活塞（4 1)推動塞體（23A)進入針座本體（22)的容置槽 (2 2 6 )中’使塞體（23A)封閉各流道（2 2 7 ) ^ C 2 2 6 )及引流道（2 2 5 )相通 而達到岔封，接著旋轉g彡門 得開该上蓋（3 0 )，使其旋動離 開筒狀本體（1 1 )，π吐一 U疋勁離 问時亦旋動離開與定位螺孔f 3 )相螺合定位的針座Γ 9 n、 I 2 〇 )，並且由於防轉凸條3 )與直凸條（2 2 1 )的相方上… C 1 ^ 的相互卡制，使得在上蓋（3 〇 ) • M269076 旋轉脫離的過程中針座（2 〇 ) .t r 〇 〇 , 曰[者轉動，而可脫離 上盍（30)的疋位螺孔（η)，然後將推桿 向後拉，造成推桿活塞（41)肖針座（Μ) 〇 ’利用大氣的屋力將針座（2〇)向注賴内？ 收’最後將推桿（4 〇 )出妈把 内回 ……人 言折凹口（42)處折斷，即 達成本創作女全使用的目的。 【圖式簡單說明】 第一圖係本創作第一 第一圖係本創作第一 第二圖係本創作第一 第四圖係本創作第一 作示意圖。 較佳實施例之立體分解圖。 較佳貫施例之剖面圖。 李父佳貫施例之斷面圖。 較佳實施例之推桿推抵塞體的動 較佳實施例之旋鬆該上蓋的動作 第五圖係本創作第一 示意圖。 之回收針座並折斷推 第六圖係本創作第—較佳實施例 桿的動作示意圖。 一較佳實施之剖面圖。 一較佳實施之斷面圖。 明】 第七圖係本創作第 第八圖係本創作第 【主要元件符號說 (1 0 )注射筒 (1 2 )螺紋 (1 4 )擋緣 (21)針頭 (2 2 1 )直凸條 (1 1)筒狀本體 (1 3 )防轉凸條 (2 0 )針座 (2 2 )針座本體 (2 2 2 )氣密環 ,M269076 - (2 2 3 )針頭聯結部（2 (2 2 5 )引流道 （2 (2 2 7 )流道 （2 (2 3 B )塞體 （2 (3 0 )上蓋 （3 (3 2 )套筒 （3 (4 0 )推桿 （4 (4 2 )彎折凹口 2 4 )針頭聯結部 2 6 )容置槽 3 A )塞體 4 B )輔助流道 1 )螺紋 3)定位螺孔 1 )推桿活塞★ When you want to recover the needle seat (20) after using this creation, please refer to the first and third to sixth illustrations' Push the push rod (40) to push the plug body (23A) with the push rod piston (41). Enter the receiving groove (2 2 6) of the needle base body (22) to make the plug body (23A) close each flow channel (2 2 7) ^ C 2 2 6) and the drainage channel (2 2 5) communicate with each other to reach Fork seal, and then rotate the g door to open the upper cover (30) to make it rotate away from the cylindrical body (1 1). When π is pressed, it will also rotate away from the positioning screw hole f 3) The pin holders Γ 9 n, I 2 〇) are screwed and positioned, and because the anti-rotation convex strip 3) and the straight convex strip (2 2 1) are on each other ... C 1 ^ is locked with each other, so that the upper cover (3 〇) • M269076 The needle seat (2 〇) .tr 〇〇, which means [the person rotates, can be disengaged from the position screw hole (η) of the upper cymbal (30), and then pull the push rod backward, causing Push rod piston (41) Shaw needle seat (Μ) 〇'Using the atmospheric room force to move the needle seat (20) into the note? The ‘finally’ puts the putter (40). The mother returns the inner…… break at the notch (42). [Schematic description] The first picture is the first creation of the book The first picture is the first creation of the book The second picture is the first creation of the book The fourth picture is the first creation of the book. An exploded perspective view of the preferred embodiment. A cross-sectional view of a preferred embodiment. A section view of Li Fujia's example. The movement of the pusher against the plug body in the preferred embodiment The action of unscrewing the upper cover in the preferred embodiment The fifth diagram is the first schematic diagram of this creation. The needle seat is recovered and pushed. The sixth figure is a schematic diagram of the movement of the lever according to the first preferred embodiment of the present invention. A cross-sectional view of a preferred implementation. A sectional view of a preferred implementation. Ming] The seventh picture is the author of the eighth picture. The eighth picture is the author. [The main component symbol (1 0) the injection cylinder (1 2) the thread (1 4) the retaining edge (21) the needle (2 2 1) straight convex strip (1 1) Cylindrical body (1 3) Anti-rotation convex strip (2 0) Needle base (2 2) Needle base body (2 2 2) Air-tight ring, M269076-(2 2 3) Needle joint (2 ( 2 2 5) drainage channel (2 (2 2 7) flow channel (2 (2 3 B) plug body (2 (3 0) top cover (3 (3 2) sleeve (3 (4 0) push rod (4 ( 4 2) Bend notch 2 4) Needle connection 2 6) Receiving groove 3 A) Plug body 4 B) Auxiliary flow channel 1) Thread 3) Positioning screw hole 1) Push rod piston
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