Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1986-06-23
1988-09-20
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604165, 604168, 604179, A61M 500
Patent
active
047722649
ABSTRACT:
A catheter introduction set for introducing a catheter tube into blood vessels such as veins and arteries, includes a hollow needle, a catheter tube surrounding a flexible safety guide tube extending through the needle passageway. The guide tube is initially retracted. The needle will be inserted into a vein or artery and the guide tube provides an immediate feedback of blood at its remote end, thus indicating the needle is inside a blood vessel. After the needle has pierced the blood vessel, the safety guide tube is advanced into the lumen of the blood vessel to provide a guide for sliding the catheter tube into the pierced vessel and permitting retraction of the needle. The capillary tube requires little blood pressure to provide the blood feedback indicating that a vessel has been pierced, which makes the unit suitable use in for small veins, as well as arteries. When the catheter tube has been guided into the vessel, the needle and the guide tube are withdrawn, leaving the catheter tube in place. The end connector on the catheter tube has a clip for adhesive tape to be applied to the skin for quickly and easily holding the catheter tube in position.
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patent: 4324237 (1982-04-01), Buttaravoli
patent: 4525157 (1985-06-01), Vaillancourt
Pellegrino Stephen C.
Regents of the University of Minnesota
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