Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1992-06-17
1993-09-21
Weiss, John G.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604164, A61M 5178
Patent
active
052464261
ABSTRACT:
This invention relates to an improved arterial catheterization system which is designed to allow the user to quickly visualize the early flashback of blood after penetration of a vessel. The improved arterial catheterization system of this invention allows for minimum blood loss during initial penetration of the blood vessel. Specifically, this invention is directed to a system for introducing an over-the-needle catheter into a blood vessel, and comprises an inserter unit having a hollow needle and a catheter having a lumen such that the catheter is adapted to be carried on the needle. The catheter and needle cooperate to form a first flashback chamber therebetween. The first flashback chamber is at least partially translucent and allows for the visualization of blood flow upon insertion of the needle into a blood vessel. A guide wire, which is slidably mounted on the inserter unit within the needle, is dimensioned in relation to the needle in order to provide a blood flow passage therebetween. A second flashback chamber is formed in the inserter unit and connected to the needle to receive blood flow. The guide wire serves as a guide for the catheter as the catheter is advanced off of the needle, along the guide wire and into the blood vessel. The guide wire and the catheter are separable after the catheter is placed in the blood vessel.
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Arrow International, Inc. EID Catheter.
Lewis Jeffrey P.
Moyer Jeffrey M.
Szurgot Robert A.
Arrow International Investment Corp.
Weiss John G.
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