CATHETER INSERTING METHOD AND APPARATUS

The skin and a subjacent body vessel (68) is pierced with a needle (16) mounted on a fluid-fillable chamber (12) at the opposite end of which is a plunger (14) movable into the chamber. In one embodiment, disposed within the needle and chamber is a closed-ended flexible catheter (20). A flexible sty...

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Bibliographische Detailangaben
Hauptverfasser:	RONARUDO JIEI BURAUN, RIROI II GUROTSUSHIYONGU
Format:	Patent
Sprache:	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 skin and a subjacent body vessel (68) is pierced with a needle (16) mounted on a fluid-fillable chamber (12) at the opposite end of which is a plunger (14) movable into the chamber. In one embodiment, disposed within the needle and chamber is a closed-ended flexible catheter (20). A flexible stylet (22) is disposed in the catheter. The catheter is drawn through the needle and into the body vessel by pushing into the chamberthe plunger which engages the distal portion (54) of the stylet. The closed-ended pliable catheter is drawn into place in the body vessel by the pushing stylet while fluid is simultaneously infused into the body vessel to dilate it and thereby ease the advancement of the catheter with minimal damage to the vessel wall.The chamber (12) and needle (16) are removable from the catheter (20), leaving it in place in the body for the infusion of fluid.The another embodiment a stiffer, open-ended catheter is used and the plunger pushes directly against the catheter to push it into the body vessel.