Screw injector

The utility model provides a screw injector. The screw injector comprises a needle head, a needle cylinder and a piston core rod. One end of the needle cylinder is in interference threaded connection with the needle head, the needle cylinder is communicated with the needle head, the extending direct...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LIU ZHIQIANG, WANG LIUHENG, ZHANG JIANCHANG, TAN GUISHUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BABY COMFORTERS CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICALPURPOSES DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR RECEIVING SPITTLE DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGINGPHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL ORADMINISTERING FORMS HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE
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Beschreibung
Zusammenfassung:	The utility model provides a screw injector. The screw injector comprises a needle head, a needle cylinder and a piston core rod. One end of the needle cylinder is in interference threaded connection with the needle head, the needle cylinder is communicated with the needle head, the extending direction of the extruding and pushing through hole is the same as that of the needle cylinder, one end of the piston core rod is located in the extruding and pushing through hole and movably connected with the needle cylinder, and the piston core rod moves in the extending direction of the extruding and pushing through hole. The extrusion through hole is an extrusion threaded hole, the piston core rod comprises an extrusion rod part and a sealing end part, the sealing end part is arranged at one end of the extrusion rod part, a threaded structure is arranged on the peripheral wall of the sealing end part, and the threaded structure is in threaded connection with the extrusion threaded hole when the extrusion rod part dr