Self-withdrawing puncture-proof remaining needle structure

The invention relates to the technical field of remaining needles. The invention aims to provide a puncture-proof indwelling needle structure with a self-withdrawing needle. The puncture-proof indwelling needle structure comprises a catheter seat, the catheter seat sequentially comprises a transpare...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YANG YOUZHUAN, FAN JIAHUI, LUO GUIZHI, LU JINHONG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to the technical field of remaining needles. The invention aims to provide a puncture-proof indwelling needle structure with a self-withdrawing needle. The puncture-proof indwelling needle structure comprises a catheter seat, the catheter seat sequentially comprises a transparent three-way section and a connecting section from front to back; a soft catheter is arranged at the front end of the transparent three-way section, and an isolation plug is arranged in the rear end of the transparent three-way section; the needle withdrawing cylinder is inserted into the rear end of the catheter base connecting section and extends in the front-back direction, a sliding needle base capable of sliding in the length direction of the needle withdrawing cylinder is arranged in the front end of the needle withdrawing cylinder, and a steel needle is arranged at the front end of the sliding needle base; the steel needle penetrates through the isolation plug and extends out of the soft catheter; a negative