Patent ID: 8221361

Claim:
An infusion device comprising: a body including an accessible surface having a single inlet port therein, an engagement surface having a single outlet port therein and a medication delivery channel extending between the single inlet port and the single outlet port, the single inlet port being the body's only inlet port for providing access to the medication delivery channel; an adhesive laminate member coupled to and oriented substantially parallel to the engagement surface; a polymer cannula coupled to the body at the single outlet port and extending substantially perpendicular from the engagement surface, wherein the cannula is adapted for receiving medication from the single outlet port and transmitting the medication therethrough, the cannula having a top portion and an inner surface that defines a cannula passageway and that includes a portion that cannot be in direct contact with medication delivered to a user when the infusion device is used; and a first self-sealing member attached to the body and forming a first septum for the medication delivery channel, the first self-sealing member having a bottom-most portion that will be surrounded by and in contact with an insertion needle during insertion of the cannula and a top-most portion that will be surrounded by and in contact with an insertion needle during insertion of the cannula, the first self-sealing member being configured such that any space between the bottom-most portion and the top-most portion that is occupied by a centered insertion needle during insertion of the cannula is substantially occupied by first self-sealing member material when the insertion needle is removed; wherein the top portion of the cannula is closer to the first self-sealing member than is the adhesive laminate member.