An apparatus for the delivery of a fluid to an anatomical region, the apparatus comprising: a catheter comprising a catheter body, the catheter body comprising a lumen therein, a substantially closed distal end, and an infusion section configured to permit fluid to pass through the catheter body, the infusion section defining a length that is less than a length of the catheter body; a coiled member positioned within the lumen of the catheter body, the coiled member comprising adjacent coils and defining a first end, a second end, and a lumen therethrough, wherein the second end of the coiled member is positioned nearer to the distal end of the catheter body than the first end of the coiled member; and one or more electrically conductive elements supported by the catheter body and capable of electrical communication with one or more sources of electrical stimulus located peripheral to the catheter body for providing an electrical stimulus to a patient's tissue surrounding the catheter body; wherein: the coiled member is configured such that, when the coiled member is in a relaxed position, at least a portion of an outer surface of the adjacent coils are in contact with one another in at least a portion of the coiled member; the coiled member has a length that is greater than or equal to the length of the infusion section when the coiled member is in the relaxed position; the coiled member is capable of conducting an electrical stimulus; and at least one of the one or more electrically conductive elements is in communication with the coiled member; characterised in the coiled member being configured so that fluid within the coiled member and having a fluid pressure below a threshold dispensation pressure is prevented from exiting the lumen by flowing radially between the coils, and to stretch when the fluid pressure within the coiled member is greater than or equal to the threshold dispensation pressure to permit said fluid to weep through the coils thereof in use of the apparatus. a catheter comprising a catheter body, the catheter body comprising a lumen therein, a substantially closed distal end, and an infusion section configured to permit fluid to pass through the catheter body, the infusion section defining a length that is less than a length of the catheter body; a coiled member positioned within the lumen of the catheter body, the coiled member comprising adjacent coils and defining a first end, a second end, and a lumen therethrough, wherein the second end of the coiled member is positioned nearer to the distal end of the catheter body than the first end of the coiled member; and one or more electrically conductive elements supported by the catheter body and capable of electrical communication with one or more sources of electrical stimulus located peripheral to the catheter body for providing an electrical stimulus to a patient's tissue surrounding the catheter body; wherein: the coiled member is configured such that, when the coiled member is in a relaxed position, at least a portion of an outer surface of the adjacent coils are in contact with one another in at least a portion of the coiled member; the coiled member has a length that is greater than or equal to the length of the infusion section when the coiled member is in the relaxed position; the coiled member is capable of conducting an electrical stimulus; and at least one of the one or more electrically conductive elements is in communication with the coiled member; the coiled member is configured such that, when the coiled member is in a relaxed position, at least a portion of an outer surface of the adjacent coils are in contact with one another in at least a portion of the coiled member; the coiled member has a length that is greater than or equal to the length of the infusion section when the coiled member is in the relaxed position; the coiled member is capable of conducting an electrical stimulus; and at least one of the one or more electrically conductive elements is in communication with the coiled member; characterised in the coiled member being configured so that fluid within the coiled member and having a fluid pressure below a threshold dispensation pressure is prevented from exiting the lumen by flowing radially between the coils, and to stretch when the fluid pressure within the coiled member is greater than or equal to the threshold dispensation pressure to permit said fluid to weep through the coils thereof in use of the apparatus.