M261222 捌、新型說明： 〔新型所屬之技術領域〕 本創作屬於醫療賴，具說H次性使用的安 全注射器。 〔先前技術〕 眾所周知，注射器為一種常用的醫療器具，一般包括 有針頭、針筒、活塞及推杆等，針頭安在針筒上，活塞處 於推杆前端且可滑動地套裝在針筒内。為了防止交叉感染， 注射器的-次性使用越來越受到人們的重視。但現在廣泛 使用的-次餘屬於「管理性」崎，並且現有一般 的注射器其自身不具有毁壞性保護結構，從而使得現有的 /主射器在使用性能上並不是「―次性」的，可以反復使用， 給交叉感染留下隱患’容易引祕刺傳播。另外，現有 /主射器在注射完畢隨後的處理過程巾，由於針頭大多暴露 在外，極㈣傷或㈣醫務轉者或相_病患者，造成 新的交叉感染。大陸專利號爲98250220.6的安全注射器， 由注射筒、針頭元件、卡合座、推杆及卡稱組成，其中 卡合座位於㈣ϋ制處，㈣頭元件與卡合座的前端組 合，卡合座後端财-卡合孔，卡祕於推杆前端，當推 杆向注射筒前端推進至接近最前端時，卡頭與卡合座產生 卡σ，使付¥推杆向後拔出時，卡合座連同針頭元件一同 M261222 被拉至針筒的容納室内，以防止針體刺傷人體，達到一次 性使用的目的，但由於該注射器設計結構不合理，藥液殘 留量大’針座密料嚴等技術缺陷，其產品使祕能不夠 穩定。 〔新型内容〕 本創作的目的是珊現有帥n畴在的_而提供一 種具有保護性自毁結構且藥液注射徹底的—次性使用的安 全注射器。 本創作的—次性使㈣安全注射H是通過以下方式來實 現的·它包括有針筒、推杆、推杆活塞，推杆活塞裝在推 杆前端部，推杆活塞與針筒内壁吻合且可沿内壁滑動，並 進一步包括有針頭，上述的針筒前端具 裝在針頭座上。 構成上m如料座、料套、針f、㈣綱及彈簧 套的後端具有臺階，其中心為觀·針管裝在 ==柯孔中且其針管尖如針管套；針管座的令心 腔:所述的密封鎖環裝在針管套的後端部臺階 的空Μ, ^^^未端部；上述㈣簧餘針管座 :針管套的後端臺階與針管 M261222 該安全注射器由於在注射完時，活塞與針筒底部完全接 觸’避免了藥液的殘留，另外由於採用特殊的針頭結構， 有利於對整個S射II進行保護性地自毀，真正達到一次性 使用的目的。 〔實施方式〕 ^兄圃i，本創作的一次性使用的安全注射器，包括 ^筒卜推杆2、推杆活塞3，推杆活塞3裝在推杆2前 端’推杆活塞3與針筒内壁吻合且可沿内壁滑動，這部 分技術與現有的注射器相似，在此不作詳細說明。本創作 進步包括有針頭4，上述的針筒前端具有針頭座Η，在 加工時可與針筒-鱧注塑而成；針頭4安裝在針頭座u上。 參見囷2和圖3，上述的針頭4由針管座4卜針管套 =、針管43、密封親44及彈# 45構成；針管套42的後 :具有臺階’其中心為通孔；針管43裝在針管套42前部 通孔中且其針㈣尖料管套42，便於崎；針管座 =中心為貫通的紐，邮難容崎f套42且允許針 2 42滑動。所述的密封鎖環料裝在針管套犯的後端部 ==地峨41_錢部，贿封鎖環44 二= 管套42與針管座41之間的密封，另-方面 套42 (連同針管43)定位安裝在針管座41上。上 、的彈簧45裝在針管座41的空腔中，處於針管套42的後 M261222 =階與針技41 _灿_。正常敎下處於受 力狀態’當解除約束時即密封鎖環44被推開時 下向後彈&，的料錢與針，前 端的針碩座11之間具有配合結構。 ▲上述的配合結構為螺旋頭與螺旋口結構；針頭座U的 别端為螺旋口，針管座41外為螺旋頭。 上述的配合結構為嵌入式卡裝結構，針頭座u的前端 為嵌入式卡π，針管座41為與此卡口相配合的卡齒。 上述的配合結構為螺紋連接結構。 上述結構在裝配時，將針管座通過其配合結構與針頭座 裝配在-起。為了保證裝配後的密封性，在針管座41與針 頭座11接觸處設有密封墊5。 、 所述的推杆2前端具有頂環2卜該頂環21與密封鎖環 44相對應，用於將針管座41中的密封鎖環44向前推進， 解除針管套42 _束，以料管套42德科45的作用 下，向後反彈。所述的頂環峰杆2前端的兩個半圓構 成，其中間具有開口，當多次用力推動密封鎖環Μ時，該 頂環21會受力向外張開，使其周徑大於密封鎖環44，以防 多次反復使用。 在推杆2的推動下’防止針管套42向前滑動，在針管 座41空腔的前端緣具有一向中心收縮的卡擋恥^ 為了防止推杆2頂圈21意外受力推動密封鎖環44向前 M261222 滑動解壓彈簧45，在上雜杆2後端與針筒1間設有限位 功能的推杆支座6，當用力向前推進推杆2時，可帶動支座 6 -起向騎動或推杆2卡擋％ _地進人支座6，完成 徹底的注射和自毁。 一參見圖2 ’本創作在注射工作完成後，推杆2前端的頂 環21推動密封鎖環44向内（前)滑動解壓彈簧45，當推 杆2回拉針管套41 (連同針管43)受彈力作用下，自 動彈入針/^ 1内，在再:欠推人推杆2時，即可將針管套々I 或針s 43擠毁’並且由於針管套41回彈進針筒^内，無 法對針管套41進行定位，可防止再次被_。㈣，可將 折斷推杆2使整做射n無法制，以此實現注射器僅供 一次使用而自毀，避免注射H重復使用。 ，參見圖3，所述的推杆2前部具有容腔23，在推杆頂環 後P具有堵塞22，該堵塞22具有密封性能，以防藥液渗 入容腔23中。當注射完畢後，頂環21推動密封鎖環44向 内（前）滑動解壓彈簧45 ,同時，推杆2内的堵塞22受針 b套42 #反推進入容腔23 +，針管套42被彈入容腔幻 ^ ’使注射針及整個注㈣不能反復使用，以此實現注射 器僅供-次使用而自毁，避免靖器重復使用。 M261222 〔圖式之簡單說明〕 圖1為本創作的一種主視示圖； 圖2為本創作的一種結構示圖； 圖3為本創作的另一種結構示圖。 編號說明： 1……針筒 11……針頭座 2……推杆 21……頂環 22……堵塞 23……容腔 3……推杆活塞 4......針頭 41- …·針管座 42··， •…針管套 43·· •…針管 44… •…密封鎖環 45… •…彈簧 46… —^擂 5"·· ••密封墊 6……推杆支座M261222 新型 Description of the new type: [Technical field to which the new type belongs] This creation belongs to the medical industry, and it is said that it is a safety syringe for H-time use. [Prior art] It is well known that a syringe is a commonly used medical device, and generally includes a needle, a syringe, a piston, a push rod, etc. The needle is mounted on the syringe, and the piston is slidably fitted in the syringe at the front end of the push rod. In order to prevent cross-infection, the disposable use of syringes is receiving increasing attention. However, the widely used -Jiyu belongs to "management", and the existing general syringe does not have a destructive protective structure, so that the existing / main injector is not "-secondary" in terms of performance. Can be used repeatedly, leaving hidden dangers to cross-infection 'easy to induce secretion spread. In addition, the existing / main ejector handles the towel after the injection is completed, and most of the needles are exposed, resulting in severe trauma or stabbed patients or related patients, causing new cross-infection. Continental patent No. 98250220.6 safety syringe is composed of syringe, needle element, snap seat, push rod and snap scale, where the snap seat is located at the clamping position, the tip element is combined with the front end of the snap seat, and the snap seat The back end is a hole that is locked in the front end of the push rod. When the push rod is pushed towards the front end of the injection cylinder to the foremost end, the card head and the engagement seat generate a card σ. When the ¥ push rod is pulled out backward, the card is stuck. The combined seat with the needle element M261222 is pulled into the housing of the syringe to prevent the needle from stabbing the human body to achieve one-time use. However, due to the irrational design of the syringe and the large amount of liquid residue, the needle seat is tightly packed. And other technical defects, its products make the secret energy is not stable enough. [New content] The purpose of this creation is to provide a safe, self-destructing structure and a complete, injectable safety syringe with a protective self-destructing structure. The creation of this time-injection safety injection H is achieved by the following methods: It includes a syringe, a push rod, a push rod piston, the push rod piston is installed at the front end of the push rod, and the push rod piston coincides with the inner wall of the syringe. It can slide along the inner wall and further includes a needle. The front end of the syringe is mounted on the needle base. The upper end of the m such as the material seat, the material sleeve, the needle f, the gangue, and the spring sleeve has a step, and the center is the view. The needle tube is installed in the = hole and the needle tip is like the needle tube sleeve. Cavity: The sealing lock ring is installed in the empty M, ^^^ end of the step of the rear end of the needle tube sleeve; the above-mentioned spring spring needle holder: the rear step of the needle tube sleeve and the needle tube M261222 At the end, the piston is in full contact with the bottom of the syringe to avoid the residue of the medicinal solution. In addition, due to the special needle structure, it is conducive to the protective self-destruction of the entire S shot II, which truly achieves the purpose of one-time use. [Embodiment] ^ Brother i, the single-use safety syringe of this creation includes ^ cylinder push rod 2, push rod piston 3, push rod piston 3 is installed at the front end of push rod 2, push rod piston 3 and syringe The inner wall fits and can slide along the inner wall. This part of the technology is similar to the existing syringes, and will not be described in detail here. This creative progress includes a needle 4, the above-mentioned syringe has a needle seat 前端 at the front end, which can be injection-molded with the syringe- 筒 during processing; the needle 4 is mounted on the needle seat u. Referring to Figure 2 and Figure 3, the above-mentioned needle 4 is composed of a needle tube holder 4, a needle tube sleeve =, a needle tube 43, a seal 44 and a spring # 45; the rear of the needle tube sleeve 42: has a step 'its center is a through hole; the needle tube 43 is installed In the front through hole of the needle tube cover 42 and its needle tip material tube cover 42 is convenient for Saki; the needle tube seat = a button with a center at the center, and the post 2 allows the needle 2 42 to slide. The sealing and locking ring material is installed at the rear end of the needle tube sleeve. == 地 埃 41_ 钱 部, brigade ring 44 44 = the seal between the tube sleeve 42 and the needle tube seat 41, and the other side of the sleeve 42 (together with The needle tube 43) is positioned and mounted on the needle tube holder 41. The upper and lower springs 45 are installed in the cavity of the needle tube holder 41, behind the needle tube sleeve 42. M261222 = step and needle technique 41 _ 灿 _. Normally the majesty is in a state of stress' when the seal lock ring 44 is pushed open when the restraint is released, and there is a fitting structure between the material of the needle and the needle and the needle seat 11 at the front end. ▲ The above-mentioned fitting structure is a spiral head and a spiral mouth structure; the other end of the needle base U is a spiral mouth, and the outside of the needle base 41 is a spiral head. The above-mentioned mating structure is an embedded card-mounting structure, the front end of the needle base u is an embedded card π, and the needle tube base 41 is a clamping tooth matching this bayonet. The above-mentioned mating structure is a screw connection structure. When the above structure is assembled, the needle tube base is assembled with the needle base through its mating structure. In order to ensure the tightness after assembly, a gasket 5 is provided at the contact portion of the needle tube holder 41 and the needle holder 11. The front end of the push rod 2 has a top ring 2. The top ring 21 corresponds to the sealing lock ring 44 and is used to advance the sealing lock ring 44 in the needle tube seat 41 to release the needle tube cover 42. Under the action of the sleeve 42 Deco 45, it rebounded backwards. The top ring peak rod 2 is formed by two semicircles at the front end, and an opening is provided in the middle thereof. When the sealing lock ring M is pushed for many times, the top ring 21 is forced to open outward, so that its circumference is larger than the seal lock. Ring 44 in case it is used repeatedly. Under the push of the push rod 2, the needle tube cover 42 is prevented from sliding forward, and the front edge of the cavity of the needle tube seat 41 has a locking stopper that shrinks toward the center. The M261222 slides the decompression spring 45 forward, and a push rod support 6 with a limit function is provided between the rear end of the upper miscellaneous rod 2 and the syringe 1. When the push rod 2 is pushed forward strongly, the support 6 can be driven. Move or push rod 2 to block% _ into the human support 6 to complete a complete injection and self-destruction. See Figure 2 'After the injection is completed, the top ring 21 at the front end of the push rod 2 pushes the sealing lock ring 44 to slide inward (front) the decompression spring 45. When the push rod 2 pulls the needle tube sleeve 41 (with the needle tube 43) Under the action of the elastic force, it will automatically pop into the needle / ^ 1. When the push rod 2 is under pushed, the needle tube sleeve 々I or the needle s 43 can be crushed 'and the needle tube sleeve 41 rebounds into the syringe ^ In this case, the needle cannula 41 cannot be positioned to prevent it from being damaged again. Alas, the push rod 2 can be broken to make the whole shot n impossible, so that the syringe can be self-destructed for only one use and avoid repeated use of the injection H. As shown in FIG. 3, the front part of the push rod 2 has a cavity 23, and after the top ring of the push rod P has a plug 22, which has a sealing performance to prevent the medicinal liquid from penetrating into the cavity 23. After the injection is completed, the top ring 21 pushes the sealing lock ring 44 to slide inward (front) the decompression spring 45. At the same time, the block 22 in the push rod 2 is pushed by the needle b sleeve 42 # back into the cavity 23 +, and the needle tube sleeve 42 is Pop into the cavity magic ^ 'make the injection needle and the entire injection can not be used repeatedly, so that the syringe can only be used for one time and self-destructed to avoid repeated use of the device. M261222 [A brief description of the drawings] Figure 1 is a front view of the creation; Figure 2 is a structural view of the creation; and Figure 3 is another structural view of the creation. Description of number: 1 ... syringe 11 ... needle holder 2 ... push rod 21 ... top ring 22 ... blocking 23 ... capacity 3 ... push rod piston 4 ... needle 41 -... Syringe holder 42 ..., • ... Syringe sleeve 43 ... Syringe 44 ... • Seal ring 45 ... Spring 46 ... ^ 擂 5 " ·· • Seal 6 ... Push rod holder