US Patent No. 10,363,342

ANTI-INFLAMMATORY CANNULA


Patent No. 10,363,342
Issue Date July 30, 2019
Title Anti-inflammatory Cannula
Inventorship Bryan Dillon, Jefferson, MA (US)
Bryan Choate, Salem, MA (US)
Assignee INSULET CORPORATION, Acton, MA (US)

Claim of US Patent No. 10,363,342

1. A wearable fluid delivery device, comprising:a chamber containing a fluid to be delivered into a body of a patient; and
a cannula in fluid connection with the chamber, the cannula comprising an exterior surface, an inner surface, a lumen and a distal end extending into the patient, wherein the cannula comprises a first material and a second material mixed with the first material, the second material disposed in discrete regions of the cannula, the second material comprising at least one of a hydrophilic material, an anti-microbial material, an anti-inflammatory material, and an anti-thombogenic material, wherein a first coating at least partially covers the exterior surface of the cannula, the first coating comprising an anti-inflammatory agent, wherein a second coating at least partially covers the interior surface of the cannula, the second coating comprising at least one of the hydrophilic material, the anti-microbial material, the anti-inflammatory material, and the anti-thombogenic material,
wherein the second coating covers less than an entire length of the inner surface of the cannula,
wherein the first coating covers less than an entire length of the exterior surface of the cannula,
wherein the second coating coats less than an entire perimeter of the inner surface of the cannula,
wherein the first coating coats less than an entire perimeter of the exterior surface of the cannula,
wherein a third coating at least partially covers the exterior surface of the cannula, the third coating comprising at least one of the hydrophilic material, the anti-microbial material, the anti-inflammatory material, and the anti-thombogenic material, wherein the first and second coatings comprise different materials,
wherein the third coating is disposed in a concentration gradient throughout the first coating.