Self-destroying disposable syringe (100): Cylindrical portion having (23) a hub which is arranged at the front end (20), the cylindrical portion disposed on the inner wall of the hub (23) (24) flange needle to connect the hub cylindrical portion (20) to (23) Part A (10), which is arranged housing portions disposed connecting portion (13), the outer (13) and connections (14), the rear needle (10), connecting part (13) When the unit needle (10) is connected tubular portion (20), the connecting portion needle part and a (15) and (10) self-destroying ring to be connected through a plurality of ribs (16) or 1 (15) and located inside of (23) the hub cylindrical portion (20), the self-destroying ring (15) and (24) to each other to match the self-destroying ring (13) flange unit cylinder ( plunger is inserted movably 20) and (30), pushing shaft connected rod (31), rear rod (31) to (31b) and (32), rod (31) The fixed cone one end is fixed pushing disc which is connected the front end to (31a) and (33), the pushing disc (33) and (34), at the other end of cone (34) and (30) a plunger and a (35) punctures piston is connected cone plunger (30) to (34) and (40), is provided inside the (40) piston (45) cavity sealed and a (41) and front (43) the front wall, and a (40) provided in the piston (42) and rear (46) opening which leads into a cavity (45).自己破壊型使い捨て注射器(100)は:前端に配置されたハブ(23)を有する筒部(20)で、フランジ(24)がハブ(23)の内壁に配置された筒部;筒部(20)のハブ(23)に接続する針部(10)であって、接続部(13)と、接続部(13)の外側に配置された収容部(14)と、針部(10)の後端に配置され、接続部(13)に1又は複数のリブ(16)を介して接続する自己破壊型リング(15)とを含む針部(10)で;針部(10)が筒部(20)に接続されたとき、接続部(13)と自己破壊型リング(15)は筒部(20)のハブ(23)の内側に位置して、自己破壊型リング(15)はフランジ(24)と相互にマッチする;筒部(20)に可動式に挿入されるプランジャ(30)で、棒状体(31)と、棒状体(31)の後端(31b)に接続される押込み軸(32)と、棒状体(31)の前端(31a)に接続される押込み円板(33)と、押込み円板(33)に一方の端が固定された円錐体(34)と、円錐体(34)の他方の端に固定された穿刺部(35)とを含むプランジャ(30)と;プランジャ(30)の円錐体(34)に接続されるピストン(40)で、空洞(45)をピストン(40)の内部に備え;シールされた前壁(43)を前端(41)に備え、空洞(45)に通じる開口部(46)を後端(42)に備えるピストン(40)とを有する。
