挪、新型說明： 【新型所屬之技術領域】 本__針職件可縮人針筒_的單:讀㈣醫療用注 入^更月確4，係關於具有可防止注射桿與針頭組件意外過早 一而致;主射器報廢的構件的安全注射器。 【先前技術】 由於許多傳染性疾病可經由已注射過患有此等疾病的患者的針管 ，傷皮膚而散播，使醫護人M或處理使用過的注射器的人員暴露在極 7的危險下。為了保護醫護人員等免於意外疏忽的針刺，已發展出許 多解決方案，可防止使用過後之尖銳針管接觸身體以防非故意的針 刺。例如，-種單錢㈣安纽卿係於使略㈣I後， 將針管縮入針筒内部。 ，· 中華民國新型專利公告第3 5 76! 4號揭露一種針管可縮入針筒 内。P之靜脈注射器，如Η 1所顯示，該注射$ 1〇的針座34承載 —根針管32且可縮回地安裝在針筒12之插接部心，針座的近 端形成凹室35及二片相對向的掣棘36。注射桿2〇可在針筒12 内直線移動且在活塞22末端形成錐形鉤部26。當使用者完成藥 液的注射後，繼續推壓注射桿20往針管32的方向前進，釣部％ 可擠開掣棘36而通過後者所形成的開口，再將注射桿2〇反向後 退時’鉤部26則被已回復原位的掣棘36卡住，此時，拉引注射 桿後退便可使針座連同針管縮人針筒内部，從而降低使用者或其 他人被使用過的針管意外札刺的可能性。不過，為了預防釣部％ 與擎棘36過早卡合以致注射器尚未使用就已報廢，該專利必須另 外在針筒12的擋片16設置保險扣片18以便扣住注射桿沈的推 片28 ’使後者不能移動，等到要抽取藥液進入針筒内時，使用者 才解開保險扣片18(如虛線所示）。 L:Xmenu\Pending-92\92461 新型專利說明書.doc 5 這種注射n的缺點之—是保 製造，因為在生產組裝或搬運過程中，==同構造_且不易 相互糾纏，必翻人卫分開而増加生產成^凸出的保險扣片會 【新型内容】 本創作之目的是提供一種針頭組件可入 器，具有可防止注射桿與針頭也件咅早人R 安全注射 ::過:::本較低，上===: 哪本創狀⑽㈣含針筒；含有針 . 注射桿；卡扣裝置，其包含設於注射 h之=組件’ 以二：ί 二元件可在注射桿與針座之間卡合， 一错由拉引庄射桿而使針頭組件縮入針筒内部·用來防止 :座:Γ=Γ合的構件’該構件位於針筒内注射桿與 第二」i 與注射桿遠端銜接且受該注射桿推動超越該 射:防止第一、二兀件互相卡合’而當該構件脫離注 射杯迠鳊後，弟一、二元件能夠互相卡合。 因為用來防纽射桿與針座之間意外地互相卡合的構件可方 便地設置在注射桿遠端上，或設置於針座近m於自動化生 產，且在注射器的組裝過程中不會干涉其他組件，有效消除前述 習知專利技術的缺點，同時，操作上也很制並且有效防止發生 注射桿與針座之間意外過早卡合的情形。 【實施方式】 為了況明本創作，本說明書中「遠端」一詞意指注射器組件之最 接近針管的那一端，而「近端」意指注射器組件之最遠離針管的那一 hmemApending-92^46丨新型專利說明書如 6 圖2與3顯示摘作-較佳實酬的 狀針，針筒42的遠端是插接部44，:， 端形成干涉結合與不漏液密封。針座64的 近::ΐ:Γ2而其近端設有二片相向的扣片66。針座64的 動且在sUl、射才可在針筒42内直線移 二端形成與注射桿5〇及針筒42同軸線的截頭錐 形的鉤。Ρ 56，釣部56可依需要而與扣片66卡合 可如同前述專利一般。 稱k 依據本創作之-特點，為了預_部56與扣片66意外地過 早卡合以致注射II尚未使用就已報廢，在鉤部56的遠端設置同轴 線的支撐桿57與截頭錐形的擋塊7G，擋塊7G具有頂面76盘底 面74及孔72。支撐桿57有一部分伸入孔72内並和後者的内壁 以，接件80相連。連接件8〇經設計献以使擋塊％被附著在支 撑桿57上，但疋在文到一定程度以上的外力時即斷裂，以便擋塊 7〇不再附著在支揮桿π上，例如，連接件8〇可具有弱化部84 或刻痕、孔線等易斷裂的構造。擋塊7〇，支撐桿57與連接件8〇 可直接一體成形，或者擋塊7〇與支撐桿57先一體成形後，再以 成形刀具切削形成孔72與連接件8〇。 如圖4所示，擋塊70的尺寸係經設計成，當擋塊7〇位在支 撐才干57上而被鉤部56往針管62方向推壓前進時，擔塊7〇可擠 開並通過扣片66所界定的開口 69，且在擋塊7〇被夾於鉤部56 與凹室65的頂面67間時，鉤部50尚未且不能完全通過扣片66 所形成的開口 69，如此，鉤部56與扣片66不會卡合。如圖5所 示’當鉤部56反向撤回而讓扣片66回復原位時，因為擋塊70 的底面74的大小大於開口 69，擋塊7〇便被扣片66拘限在凹室 L:\menu\pending-92\92461 新型專利說明書.doc 7 5 65 内，。 本創作的操作如下，當要抽 圖2的注射器的注 樂液進入針筒内時，首先推壓 70擠開並通過扣片66所^使八往針管62方向前進並使擋塊 頂靠凹室65的頂面幻時疋的開口 69，當擋塊70的頂面76已 8〇 56 5〇 的頂面59與凹宮μ μ 直到擒塊70被夾在鉤部56 卫0)的頂面67之pa i l η 10 :==便，部 參照圖6與7，當注射完畢後 而且擋塊70遠小於拘限它的凹室&，所=56上已無擋塊7〇， 片^的開口 69並且再可前進通過扣 15 料與針管62縮人· 42棒防止使彳用卡合^可將針座 的針管62意外札傷。 枝使用者或其他人員被使用過 熟悉本項技術人士#可由上述揭露暸解本創作優點 、；然使用者在尚未想要抽取藥液進入針 ^ ? 1问Μ<刖，意外地推壓圖 不〉射器40的注射桿50使其往針管62方向前進到礙如圖 20 外也不至於使釣部56卡合擋塊70而報廢注射器4〇。使用 f可因此得到警惕，且將注射器40保持圖4所示狀態直到要抽取 樂液進入針筒内為止。 當然，另-方面，使用者也可-開始就將注射桿5〇朝針筒近 端拉5丨（與朝針管62之方向相反）以便抽取藥液進入針筒内，等到 注射完畢後，再使鉤部56卡合擋塊70。 如圖7所示，注射桿50與活塞52間可以凸緣51和凹槽53 形成可脫離的連接，以利於用過的注射器40的後續處理。凸緣 51和凹槽53的連接亦可用易於折斷的減縮的直徑來代替，此為 心⑽—伽㈣職丨麵專利說明書如 8 25 熟悉本項技術人士所知的技術。此外，針筒42的内部通常另設置 防止活塞52及針座64脫離針筒42的近端開口的習知裝置(未繪 出）。 圖8顯示本創作另一實施例的注射器90,它與上述實施例的 主要差別僅在於擔塊的設置位置與方式。在此實施例，擋塊7〇, 藉由連接件80’而附著在針座64近端上，且位於扣片66與鉤部 56之間。擋塊70,有孔72,對準鉤部56的支撐桿57。連接件8〇, 具有弱化部84’或類似的刻痕、孔線等易斷裂的構造，在受到一 疋程度以上的外力時即斷裂。藉此，推壓注射桿使其往針管62 方向前進時，鉤部56的支撐桿57伸入擋塊7〇，的孔72，内，繼續 推壓注射桿便可導致鉤部56推擠擋塊7〇，使連接件8〇，斷裂，然 後，其餘動作與前一個實施例相同，同樣達到防止鉤部56與扣片 66,意外卡合的狀況。為了使支撐桿57更易於伸入擋埤7〇，的孔 72内，支撐柃57的遠端可經導角，且孔72，的近端開口亦經圓角 處理’如圖所示。 _儘管本說明書就目前認為最實㈣方式及其較佳實施例參照 圖不况明本創作’習於此技藝者應了解可在本創作之範圍内做出 許多料改變，此範圍應當依據所附巾請專利·之最廣解釋以 便涵蓋所有均等結構。 【圖式簡單說明】 圖1係習知注射器的剖視圖； 圖2係本創作之注射器的部分剖視圖； 圖3係圖2之注射器的注射桿遠端之放大的剖面圖； 圖4顯7F本創作之ά射器的擔塊阻止鉤部與扣片卡合之情形 的放大剖面圖； 圖5顯示本創作之注射器職塊被拘限在針座凹室内的放大 L:\menu\pending-92\92461 新型專利說明書 9 M252430 剖面圖； 圖6顯示本創作之注射器的鉤部與扣片卡合之情形的放大剖 面圖； 圖7顯示本創作之注射器的針座縮入針筒内之情形的放大剖 5 面圖；及 圖8係本創作之注射器第二實施例的部分剖視圖。 【圖式之主要元件符號說明】 元件代號 名稱 10 注射器 12 針筒 14 插接部 16 擋片 18 保險扣片 20 注射桿 22 活塞 26 鉤部 28 推片 32 針管 34 針座 35 凹室 36 掣棘 40 注射器 42 針筒 44 插接部 46 擋片 50 注射桿 L:\menu\pending-92\92461 新型專利說明書.doc 10 M252430 51 凸緣 52 活塞 53 凹槽 54 凸柱 56 鉤部 57 支撐桿 58 推片 59 頂面 62 針管 63 通道 64 針座 65 凹室 66 扣片 67 頂面 69 開口 70 擔塊 70， 擔塊 72 72， 74 底面 74， 底面 76 頂面 80 連接件 80， 連接件 84 弱化部 84， 弱化部 90 注射器 L:\menu\pending-92\92461 新型專利說明書 d〇c 11Description of the new type: [Technical field to which the new type belongs] This __ needle piece can be retracted into a syringe _ list: read 注入 medical injection ^ more accurate 4, it is about the prevention of accidental injection rod and needle assembly Come early; safety injector for scrapped components of main shooter. [Prior art] Since many infectious diseases can be spread through the skin of needles and needles of patients who have been injected with these diseases, the healthcare worker M or the person who handles the used syringe is exposed to extreme danger. To protect medical personnel, etc. from accidental negligence, many solutions have been developed to prevent sharp needle cannula from contacting the body after use to prevent unintentional needling. For example, a kind of single-money ㈣Ann Niuqing is after making a slight dent, and retracting the needle tube into the inside of the syringe. , · The Republic of China New Patent Publication No. 3 5 76! No. 4 discloses that a needle can be retracted into a syringe. The intravenous syringe of P, as shown in Figure 1, the needle seat 34 for injection of $ 10 carries a needle tube 32 and is retractably installed at the center of the insertion portion of the syringe 12, and the proximal end of the needle seat forms a recess 35 And two opposing detents 36. The injection rod 20 can move linearly within the syringe 12 and form a tapered hook portion 26 at the end of the piston 22. After the user finishes the injection of the medicinal solution, he continues to push the injection rod 20 to the direction of the needle tube 32. The fishing portion can squeeze the detent 36 to pass through the opening formed by the latter, and then reverse the injection rod 20 in the reverse direction. 'The hook portion 26 is caught by the detent 36 which has been returned to its original position. At this time, pulling the injection rod backward can cause the needle seat and the needle tube to retract into the syringe, thereby reducing the needle tube used by the user or others. The possibility of accidental stabbing. However, in order to prevent the fishing department from engaging with the engine 36 prematurely, so that the syringe is discarded before it is used, the patent must additionally provide a safety buckle 18 on the baffle 16 of the syringe 12 to catch the pusher 28 of the injection rod sinker. 'The latter cannot be moved, and the user will only release the safety clasp 18 (as shown by the dashed line) when the medicinal solution is to be drawn into the syringe. L: Xmenu \ Pending-92 \ 92461 New Patent Specification.doc 5 One of the shortcomings of this injection n is to ensure manufacturing, because in the production assembly or handling process, == the same structure _ and not easily entangled with each other, must turn over the human health Separately produced into a ^ protruding safety clasp [New content] The purpose of this creation is to provide a needle assembly inserter, which can prevent the injection rod and the needle from being damaged. R 早 人 R Safety injection :: 过 :: : The book is lower, the upper ===: Which of the wounds contains a syringe; contains the needle. The injection rod; the snap-in device, which includes the component set at the injection h. The needle seat is engaged, and the needle assembly is retracted into the syringe by pulling the Zhuang shoot rod. To prevent: seat: Γ = Γ combined member 'This member is located in the syringe and the injection rod and the second " i is connected with the distal end of the injection rod and pushed beyond the shot by the injection rod: to prevent the first and second elements from engaging with each other ', and when the member is separated from the injection cup 迠 鳊, the first and second elements can be engaged with each other. Because the component used to prevent accidental engagement between the button rod and the needle seat can be conveniently located on the distal end of the injection rod, or near the needle seat for automated production, and it will not be in the assembly process of the syringe. Interfering with other components effectively eliminates the disadvantages of the aforementioned conventional patented technology, at the same time, it is also very easy to operate and effectively prevents accidental premature engagement between the injection rod and the needle seat. [Embodiment] In order to clarify this creation, the term "distal" in this specification means the end of the syringe assembly closest to the needle tube, and "proximal" means the hmemApending-92 of the syringe assembly farthest from the needle tube. ^ 46 丨 The new patent specification as shown in Figures 2 and 3 shows an excerpt-preferred needle. The distal end of the syringe 42 is a connector 44, and the ends form an interference combination and a leak-proof seal. The near :: ΐ: Γ2 of the needle seat 64 is provided with two opposing buckle pieces 66 at its proximal end. The needle holder 64 can be moved linearly in the syringe 42 and the two ends can be moved linearly in the syringe 42 to form a truncated cone-shaped hook coaxial with the injection rod 50 and the syringe 42. The P 56 and the fishing part 56 can be engaged with the clasp 66 as required, which is similar to the aforementioned patent. According to the characteristics of this creation, in order to prevent the pre-section 56 and the cleat 66 from accidentally engaging prematurely so that the injection II is discarded before being used, a coaxial support rod 57 and a cut-off are provided at the distal end of the hook 56 The cone-shaped stopper 7G has a top surface 76 and a bottom surface 74 and a hole 72. A part of the support rod 57 projects into the hole 72 and is connected to the inner wall of the latter by the connecting member 80. The connecting piece 80 is designed so that the stopper% is attached to the support rod 57, but it breaks when the external force exceeds a certain level, so that the stopper 70 is no longer attached to the support swing π, for example The connecting member 80 may have a weakened portion 84 or a structure that is easily broken such as a score or a hole line. The stopper 70, the supporting rod 57 and the connecting member 80 may be directly integrally formed, or the stopper 70 and the supporting rod 57 may be integrally formed first, and then the hole 72 and the connecting member 80 are cut by a forming tool. As shown in FIG. 4, the size of the stopper 70 is designed so that when the stopper 70 is positioned on the supporting talent 57 and pushed forward by the hook 56 toward the needle tube 62, the stopper 70 can be squeezed out and passed through. The opening 69 defined by the buckle 66, and when the stopper 70 is sandwiched between the hook portion 56 and the top surface 67 of the recess 65, the hook portion 50 has not yet and cannot completely pass through the opening 69 formed by the buckle 66. The hook portion 56 and the buckle 66 will not be engaged. As shown in FIG. 5 ', when the hook portion 56 is retracted in the reverse direction and the buckle 66 is returned to the original position, because the size of the bottom surface 74 of the stopper 70 is larger than the opening 69, the stopper 70 is restricted by the buckle 66 in the alcove. L: \ menu \ pending-92 \ 92461 New Patent Specification.doc 7 5 65. The operation of this creation is as follows. When pumping the music injection liquid of the syringe of FIG. 2 into the syringe, first push 70 to squeeze it out and advance the direction of the needle tube 62 through the buckle 66 and push the stopper against the recess. The top surface of the chamber 65 is a magical opening 69. When the top surface 76 of the stopper 70 has the top surface 59 and the concave cavity μ μ until the catch block 70 is clamped on the top of the hook 56 (the guard is 0). Pa il η 10 of surface 67: == stool, referring to Figures 6 and 7, when the injection is completed and the stopper 70 is much smaller than the alcove & which limits it, so there is no stopper 70 on 56 ^ The opening 69 can be further advanced through the buckle 15 and the needle tube 62 to be retracted. 42 rods to prevent the use of engagement ^ can accidentally pin the needle tube 62 of the needle seat. Branch users or other people have been used to this technical person. You can understand the advantages of this creation from the above disclosure. However, the user has not yet wanted to extract the liquid medicine into the needle. 〉 The injection rod 50 of the injector 40 advances in the direction of the needle tube 62 so as to prevent the fishing portion 56 from engaging the stopper 70 as shown in FIG. 20 and the syringe 40 being discarded. Use f to be vigilant, and keep the syringe 40 in the state shown in Figure 4 until you want to draw the music liquid into the syringe. Of course, on the other hand, the user may also-at the beginning, pull the injection rod 50 toward the proximal end of the syringe 5 (opposite to the direction of the needle tube 62) in order to extract the liquid into the syringe, wait until the injection is completed, and then The hook portion 56 is engaged with the stopper 70. As shown in FIG. 7, the flange 51 and the groove 53 can form a detachable connection between the injection rod 50 and the piston 52 to facilitate the subsequent processing of the used syringe 40. The connection between the flange 51 and the groove 53 can also be replaced by a reduced diameter that is easy to break. This is a heart-gap job patent specification such as 8 25. Those skilled in the art are familiar with this technology. In addition, a conventional device (not shown) is usually provided inside the syringe 42 to prevent the piston 52 and the needle seat 64 from coming out of the proximal opening of the syringe 42. Fig. 8 shows a syringe 90 according to another embodiment of the present invention. The main difference from the above embodiment is only the position and manner of setting the load block. In this embodiment, the stopper 70 is attached to the proximal end of the needle holder 64 by the connecting member 80 ', and is located between the buckle 66 and the hook 56. The stopper 70 has a hole 72 and is aligned with the support rod 57 of the hook portion 56. The connecting member 80 has a weakened portion 84 'or a similar structure such as a nick or a hole line, and is easily broken, and is broken when subjected to an external force of more than one degree. With this, when the injection rod is pushed to advance in the direction of the needle tube 62, the support rod 57 of the hook portion 56 extends into the hole 72 of the stopper 70 and continues to push the injection rod to cause the hook portion 56 to push against the stop. The block 70 breaks the connecting member 80, and then, the rest of the actions are the same as the previous embodiment, and the hook 56 and the buckle 66 are prevented from accidentally engaging. In order to make it easier for the support rod 57 to extend into the hole 72 of the yoke 70, the distal end of the support yoke 57 may be angled, and the proximal opening of the hole 72, is also rounded. _Although this manual considers the most practical way and its preferred embodiments with reference to the drawings, it does not explain this creation. Those skilled in this art should understand that many changes can be made within the scope of this creation, and this range should be based on Attached towels should be patented for the widest explanation in order to cover all equal structures. [Brief description of the drawings] Figure 1 is a sectional view of a conventional syringe; Figure 2 is a partial sectional view of the syringe of the present invention; Figure 3 is an enlarged sectional view of the distal end of the injection rod of the syringe of Figure 2; An enlarged cross-sectional view of the situation in which the weight of the injector prevents the hook from engaging with the clasp; Figure 5 shows an enlarged L: \ menu \ pending-92 \ 92461 New Patent Specification 9 M252430 sectional view; Figure 6 shows an enlarged sectional view of the hook of the syringe engaged with the clasp; Figure 7 shows an enlarged situation of the needle seat of the syringe of the creation retracted into the syringe Section 5 is a sectional view; and FIG. 8 is a partial sectional view of a second embodiment of the syringe of the present invention. [Illustration of the main component symbols of the figure] Component code name 10 Syringe 12 Syringe 14 Socket 16 Blocking piece 18 Safety piece 20 Injecting rod 22 Piston 26 Hook 28 Pushing piece 32 Needle tube 34 Needle seat 35 Recess 36 40 Syringe 42 Syringe 44 Socket 46 Block 50 Injection rod L: \ menu \ pending-92 \ 92461 New patent specification.doc 10 M252430 51 Flange 52 Piston 53 Groove 54 Boss 56 Hook 57 Support rod 58 Pushing piece 59 Top surface 62 Needle tube 63 Channel 64 Needle seat 65 Alcove 66 Buckle 67 Top surface 69 Opening 70 Stretcher 70, Stretcher 72 72, 74 Bottom surface 74, Bottom surface 76 Top surface 80 Connector 80, Connector 84 weakened Department 84, Weakening Department 90 Syringe L: \ menu \ pending-92 \ 92461 New Patent Specification doc 11