主权项 |
1. An infusion device comprising:
a body having a medication delivery channel; a cannula having a portion extending from the body, the cannula having a first external perimeter that is greater than a second external perimeter of the cannula that is parallel to and below the first external perimeter, the cannula also having a cannula passageway defined by a cannula passageway wall, the cannula passageway wall including a first portion that cannot be in direct contact with medication delivered to a patient when the infusion device is used; and a septum positioned within the medication delivery channel, the septum having a septum top surface that is exposed to open space, the septum also having a septum bottom surface that is exposed to open space; the infusion device being configured so that a portion of the infusion device will be above a patient's skin when the infusion device is used. |