The present invention discloses an endovascular device arrangement (1) comprising a vascular access port (10)； an endovascular device (20) for inserting into a patient's blood vessel through said vascular access port； and a near-field communication module (15) including an antenna (17), wherein at least the antenna of the near-field communication module is located within the vascular access port； and the endovascular device comprises an electronic device (25) and an antenna arrangement (21) communicatively coupled to said electronic device for maintaining a near-field communication link between the electronic device and the near-field communication module whilst the endovascular device passes through the vascular access port. Also disclosed are an endovascular device (20) and a vascular access port (10) for use in such an endovascular device arrangement (1), an endovascular intervention system including such an endovascular device arrangement (1) and a method of operating such an endovascular intervention system.
