The invention relates to a filter syringe, in particular to a syringe used to control the opening and closing of the one-way valve mechanism according to the separation of caps by improving the filter mechanism with glass fragments and other foreign matter filtering ampoules. On the other hand, the cross-section area of the filter mechanism can be designed to be wider, so that the filter mechanism can be fewer. A device for gently inhaling liquid medicine. A syringe comprises an injection needle (10) composed of a needle body (11) and a needle seat (12) and a cylinder block (20) combined with the injection needle (10). The needle seat (12) forms a ring space (12d) with an inner wall (12a), an outer wall (12b) and a bottom (12c), and a through hole (12e) connected with the cylinder body (20) is formed on the bottom (12c). A one-way opening and closing mechanism (300) with elastic material of cylinder (360) and wing (370) is arranged on the inner wall (12a), and the end of the wing (370) is elastically contacted with the outer wall (12b). A filter mechanism (200) is provided in the annular space (12d) between the one-way opening and closing mechanism (300) and the through hole (12e), and the filter syringe (200) is arranged in the annular space (12d) between the one-way opening and closing mechanism (300) and the through hole (12e). The cap (100) is further provided with a cap (100), which is composed of a hollow body with a tip and maintains air tightly bonded to the outer surface of the needle seat 12, and an opening mechanism (400) enclosing the needle body (11) is provided internally. Thus, when the cap is assembled, a filter with a wider cross-section area can be passed even with less force. When the cap is separated, the one-way valve mechanism closes itself to inject the liquid, so as to maximize the convenience of the user and the commerciality of the syringe.
【技术实现步骤摘要】
【国外来华专利技术】过滤注射器
本专利技术涉及一种过滤注射器，尤其涉及一种通过改善具备过滤安瓿的玻璃碎片等异物的过滤机构的注射器，用于根据帽的分离与否来控制单向阀机构的开闭，另一方面能够将过滤机构的截面面积设计得较宽，因而能够以更少的力柔和地吸入药液的装置，该装置在组装了帽的状态下，即使用更少的力也可以通过较宽的截面面积的过滤机构过滤并吸入药液，在分离了帽的状态下，单向阀机构自行关闭来注射药液，从而能够使用户的便利性和对注射器的商品性最大化。
技术介绍
通常，注射器是向动植物的体内注射药液的器具，被制作成能够用尖锐的端部穿透皮肤而向任意的组织内注射药液。图1是图示一般的注射器的分解立体图，通常，如图1所图示，注射器由结合有注射针10并容纳药液的缸体20和能够前进和后退地设于所述缸体20内的柱塞30构成。就这种一般的注射器而言，随着柱塞30的后退，在缸体20内产生负压的同时填充药液，且随着前进通过正压使缸体20内的药液通过注射针10排出的同时注射至患者的体内。然而，在这种一般的注射器的使用中所存在的忧虑是，原本混入于药液本身的异物或在折断储存有药液的安瓿来开封的过程中飞溅而混入于药液内...
【技术保护点】
1.一种过滤注射器，其包括由针体和针座构成的注射针和所述注射针所结合的缸体，所述过滤注射器的特征在于，在所述针座形成有具有内壁面、外壁面和底面的环状空间，且在所述底面形成有与所述缸体连通的通孔，具有圆筒部和翼部的弹性材质的单向开闭机构设于所述内壁面，且所述翼部的末端与所述外壁面弹性地接触，在所述单向开闭机构与所述通孔之间的环状空间内具备过滤机构，所述过滤注射器进一步具有帽，该帽由具有尖端的中空体构成而维持气密地结合于所述针座的外周面，且在内部设有包裹所述针体的开闭机构。
【技术特征摘要】
【国外来华专利技术】2016.03.22 KR 10-2016-00342761.一种过滤注射器，其包括由针体和针座构成的注射针和所述注射针所结合的缸体，所述过滤注射器的特征在于，在所述针座形成有具有内壁面、外壁面和底面的环状空间，且在所述底面形成有与所述缸体连通的通孔，具有圆筒部和翼部的弹性材质的单向开闭机构设于所述内壁面，且所述翼部的末端与所述外壁面弹性地接触，在所述单...
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