Guide wire

A guide wire for a catheter, designed to introduce and/or remove fluids in human and/or animal hollow organs such as in blood vessels, comprising

• a) an elongate hollow shaft with a lumen for delivering and/or withdrawing the fluid, and
• b) an insertion aid in the form of a flexible wire coil attached coaxially to a distal end of the hollow shaft, with a guide-wire tip arranged at a distal end of the wire coil,
• c) a core wire being arranged in the lumen of the hollow shaft in order to control a flexibility of the guide wire, which core wire extends out of the lumen in a longitudinal direction and right through the wire coil to the guide-wire tip,
• d) a distal inner area of the wire coil, adjacent to the guide-wire tip in a proximal direction, communicating with the lumen of the hollow shaft via a fluid channel formed alongside the core wire and
• e) at least one outwardly open through-opening of the wire coil for the fluid that is to be introduced and/or removed,
• f) wherein the at least one through-opening is formed by at least two adjacent windings of the wire coil arranged spaced apart from each other,
• g) several further adjacent windings of the wire coil being arranged bearing on one another and thus forming at least one fluid-tight portion of the wire coil.

A guide wire for a catheter, designed to introduce and/or remove fluids in human and/or animal hollow organs such as in blood vessels, comprising

• a) an elongate hollow shaft with a lumen for delivering and/or withdrawing the fluid, and
• b) an insertion aid in the form of a flexible wire coil attached coaxially to a distal end of the hollow shaft, with a guide-wire tip arranged at a distal end of the wire coil,
• c) a core wire being arranged in the lumen of the hollow shaft in order to control a flexibility of the guide wire, which core wire extends out of the lumen in a longitudinal direction and right through the wire coil to the guide-wire tip,
• d) a distal inner area of the wire coil, adjacent to the guide-wire tip in a proximal direction, communicating with the lumen of the hollow shaft via a fluid channel formed alongside the core wire and
• e) at least one outwardly open through-opening of the wire coil for the fluid that is to be introduced and/or removed,
• f) wherein the hollow shaft is designed in two or more parts, wherein a proximal portion of the hollow shaft has less elasticity than a distal portion of the hollow shaft, and
• g) wherein the proximal portion consists of a metal tube and the distal portion consists of a plastic tube.