Patent ID: 8603035

Claim:
A single-lumen catheter for insertion into a human or animal hollow organ, comprising a) a catheter shaft with a lumen, which opens into a front opening at a distal end of the catheter shaft, b) wherein the catheter shaft has at least a first lateral opening that is at a distance from the distal end and opens into the lumen, c) at least a first insertion device, arranged on an external side of the catheter shaft in a region of the first lateral opening, for a wire-like element that should be inserted into the first lateral opening from the outside d) a second lateral opening that opens into the lumen such that during an exchange of a first wire-like element for a second wire-like element the both wire-like elements can be simultaneously in the catheter, e) wherein the second lateral opening is spaced apart from the first lateral opening in a proximal direction, and f) the second lateral opening is arranged diametrically opposed to the first lateral opening.