The present disclosure generally relates to the field of catheter technology. More specifically, the present disclosure relates to a catheter and to a catheter system comprising a catheter and a medical device to be introduced into the catheter. An embodiment of a catheter comprises: an elongated body comprising a distal tip a lumen arranged within the elongated body and comprising a lumen opening arranged at the elongated body and one or more sensors laterally arranged at the elongated body. The elongated body comprises an at least partially curved portion and at least one of the one or more sensors is arranged at the at least partially curved portion.