Hemodialysis arteriovenous indwelling needle

The invention relates to the technical field of indwelling needles, in particular to a hemodialysis arteriovenous indwelling needle which comprises an outer needle assembly and an inner needle assembly, the outer needle assembly comprises a cannula and a sleeve connected with the cannula, the inner...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	QIN HONGPING, WANG SHUHUA, ZHANG QINGJUN, PENG JIAQI, ZHU DAIXUE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE
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Beschreibung
Zusammenfassung:	The invention relates to the technical field of indwelling needles, in particular to a hemodialysis arteriovenous indwelling needle which comprises an outer needle assembly and an inner needle assembly, the outer needle assembly comprises a cannula and a sleeve connected with the cannula, the inner needle assembly comprises a steel needle and a needle seat connected with the steel needle, the cannula is configured to allow the steel needle to penetrate through, and the sleeve is configured to be in clearance fit connection with the needle seat; the steel needle is further provided with a protective sleeve capable of relatively sliding, the protective sleeve is of a single-side opening structure facing the needle tip, the protective sleeve comprises a hollow protective tube and a base arranged at one end of the protective tube, and the base is provided with a through hole; wherein the front end of the steel needle is provided with a deformation part, and the maximum distance of the deformation part in the radi