Patent ID: 8900216

Claim:
A system comprising: a guidewire for antegrade guidance of a catheter or of a catheter introducer sheath via a common femoral artery into a superficial femoral artery of a human patient, the guidewire, when in an original position in unloaded condition, having: a most distal end including a tip constituted by a rounded tip having a radius larger than the outer radius of the guidewire cross-section or constituted by a floppy tip section having more flexibility than a proximally adjacent section of the guidewire, and having a curved deflection section located proximal of the tip and directly adjacent to a proximal end of the rounded tip or of the floppy tip section, the curved deflection section having a shape having a radius of curvature of at least 5 mm and at most 30 mm and extending over an angle of curvature of at least 90° such that the tip is spaced from a continuation of an axis of a section proximally neighboring the curved deflection section, the curved deflection section having a flexibility causing the curved deflection section to spring back to substantially the shape of the curved deflection section when the guidewire is in the original position of the guidewire, when released after elastic deformation to a deformed position in which the guidewire is straightened; a needle bounding a lumen dimensioned for guiding the guidewire, which is to be inserted into the needle; and a rotation preventer for rotationally guiding the guidewire relative to a guide surface, the rotation preventer bounding a passage accommodating a section of the guide wire fixed to the rotation preventer, the rotation preventer comprising: a guidewire retainer retaining the guidewire in the passage against rotation about a longitudinal axis of the guidewire, relative to the rotation preventer, and support areas of which most distal ends are spaced apart in a direction transverse to the passage and positioned for simultaneously contacting a guide, wherein the rotation preventer is displaceable relative to the needle, together with the guidewire in longitudinal direction of the guidewire, after insertion of the guidewire into the needle, and wherein the guidewire is fixed to the rotation preventer in such an orientation about the longitudinal axis of the guidewire, that the direction of curvature of the curved deflection section relative to the rotation preventer is opposite to the direction in which the support areas of the rotation preventer are facing.