| 摘要 |
<p>An implantable fluid delivery catheter (10) comprises an elongated cannula (14) having a proximal end, a distal end opposite the proximal end, at least one internal lumen (18) extending axially therethrough, a distal tip (20) that axially occludes the internal lumen, at least one infusion port (22) located near the distal end, and extending transverse to the lumen. The infusion port has an internal opening (22b) at its intersection with the lumen, and an external opening (22a) opposite the internal opening. The external opening is located so that it is downstream of the internal opening when the catheter is positioned in a blood vessel of a patient. A method of delivering fluid to a blood vessel of a patient comprises creating an insertion channel extending from an insertion site to the blood vessel, inserting a fluid delivery catheter having at least one infusion port that is angled with respect to a lumen of the catheter at least partway through the insertion channel to the blood vessel, and positioning the catheter in the blood vessel such that an external opening of the infusion port is located downstream of an internal opening of the infusion port.</p> |
