Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1993-09-28
1994-11-22
Weiss, John G.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604164, 604159, A61M 5178
Patent
active
053664418
ABSTRACT:
A catheter introducer assembly is disclosed. The catheter introducer assembly is made UP of a housing having a needle attached to it. A guidewire is slidably located within the lumen of the needle. A catheter assembly is mounted over the needle. Within the housing is a plunger and secured to the plunger is a retainer for releasably retaining the guidewire within the needle lumen. Axial movement of the plunger causes axial movement of the guidewire. The retainer releasably retains the guidewire. Also disclosed is a method of introducing a catheter into a blood vessel. The method involves the steps of piercing the blood vessel with a sharp needle having a catheter mounted axially on it; sliding a guidewire through the lumen of the needle so that the guidewire protrudes from the distal end of the needle and into the vessel; sliding the catheter over the guidewire and into the vessel; withdrawing the needle from the catheter; and retaining the guidewire within the catheter after withdrawal of the needle.
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Becton Dickinson and Company
Lee Eric M.
Schwartz Michael G.
Weiss John G.
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