Patent ID: 7731680
Filing Date: 2010-06-08
Classification: A61M

Abstract:
1. An infusion device comprising: a body having a body passageway and a bottom; an adhesive laminate member attached to the bottom; a cannula having a portion extending from the body, the cannula also having a cannula passageway defined by a cannula passageway wall, the cannula passageway wall having an inwardly-tapered portion that will be above a patient's skin when the infusion device is mounted on the patient and the adhesive laminate member is in contact with the patient's skin, the cannula passageway having a cannula passageway end positioned outside the body, the cannula passageway end having a width, a septum positioned within the body passageway, the septum having a septum top surface that includes a septum top surface portion that is accessible to an injection needle, the septum top surface portion being defined by a septum top surface portion perimeter having a greatest width that is greater than the width of the cannula passageway end; and an inner surface that directly borders open space within the body passageway that is downstream of the septum and upstream of the inwardly-tapered cannula passageway wall portion, the inner surface defining a first inner surface perimeter positioned in a first plane that is perpendicular to an axis, the inner surface also defining a second inner surface perimeter positioned in a second plane that is parallel to and downstream of the first plane, the first inner surface perimeter being greater than the second inner surface perimeter; the infusion device being configured such that the portion of the infusion device that will be beneath the patient's skin surface when the device is used has a greater height than the portion of the infusion device that will be above the patient's skin when the device is mounted on the patient and the adhesive laminate member is in contact with the patient's skin.