Patent ID: 8105310

Claim:
A method of infiltrating fluid into subcutaneous tissue or muscle of a patient, the method comprising: a) providing a first cannula having a tubular needle with apertures disposed about a distal 33% to 100% end of the needle; b) inserting the tubular needle into a round hole formed in a skin of the patient; c) inserting all of the apertures disposed on the needle into the patient; d) wedging an outwardly flaring surface of a hub into an inner periphery of the round hole formed in the skin of the patient for forming a seal between the hub and an inner periphery of the round hole to minimize leakage of fluid to be flowed through apertures of the first cannula; e) flowing fluid through the hub, apertures and into the subcutaneous tissue of the patient; f) blocking fluid flow out of the round hole between the needle and the skin of the patient due to flow of fluid through proximal apertures disposed on the needle; and g) repeating steps of a)-f) with a second cannula by inserting the second cannula into the patient adjacent to the first cannula.