PUNCTURE NEEDLE

A puncture needle (1) includes: a tubular sheath (2) having a longitudinal axis; a needle tube (3) that is arranged inside the sheath (2) so as to be movable along the longitudinal axis and that has a needle tip (10) at a distal end thereof; and a protective tube (4) that is arranged inside the need...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ENDO, Takuo, KATAYAMA, Tomofumi
Format:	Patent
Sprache:	eng ; fre ; ger
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 DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY
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Beschreibung
Zusammenfassung:	A puncture needle (1) includes: a tubular sheath (2) having a longitudinal axis; a needle tube (3) that is arranged inside the sheath (2) so as to be movable along the longitudinal axis and that has a needle tip (10) at a distal end thereof; and a protective tube (4) that is arranged inside the needle tube (3) so as to be movable along the longitudinal axis and that has a lumen into which a guide wire is inserted so as to be movable along a direction of the longitudinal axis. The needle tube (3) has a step portion (16) formed at a position midway along the needle tube (3) in the longitudinal direction. The protective tube (4) has a protrusion (17), which protrudes radially outward, on at least part of an outer peripheral surface thereof at a position midway therealong in the direction of the longitudinal axis nearer a proximal end side of the protective tube (4) than the step portion (16) is. A distal end of the protective tube (4) is positioned at a position so as to protrude from the distal end of the needle tube (3) when the protrusion (17) abuts the step portion (16) from the proximal end side of the protective tube (4).