Over-the-needle guidewire vascular access system

摘要

Systems and methods for accessing body tissue are disclosed. The systems and methods can include an introducer assembly for percutaneous access to a body lumen. The assembly can include a needle and an over-the-needle guidewire. The needle and the guidewire can be inserted into body tissue and the guidewire advanced into the body tissue relative to the needle. The needle can be removed after advancing the guidewire.

主权项

1. A vascular access system comprising:
a needle having a proximal end, a sharpened distal end, a tubular body, and a central lumen therethrough; an over-the-needle guidewire configured to fit over the outside diameter of the needle, the guidewire comprising a proximal section and a distal section, wherein the proximal section comprises a first cross-sectional profile in the proximal section, wherein the distal section comprises an outer tubular sidewall, a skive in the outer tubular sidewall configured for passage of the needle therethrough, the guidewire having the first cross-sectional profile proximally and a second cross-sectional profile distally, and a transition zone between the first cross-sectional profile and the second cross-sectional profile, wherein the second cross-sectional profile is smaller than the first cross-sectional profile; and a luer connector operably connected to the needle having at least one input port fluidly connected to the central lumen of the needle, and a guidewire lumen not fluidly connected to the central lumen of the needle, the guidewire lumen configured to slidably house the guidewire therethrough, the guidewire lumen having a longitudinal axis that forms an acute angle with respect to a longitudinal axis of the luer connector.