Patent ID: 8137314

Claim:
A delivery device comprising: a first housing portion; a second housing portion configured to selectively engage with and disengage from the first housing portion, the first housing portion provided with a conduit support surface that faces the second housing portion when the second housing portion is engaged with the first housing portion, the conduit support surface having a recessed groove; a rotatable rotor carrying and supporting at least one pad or roller for movement in an annular path with the rotation of the rotor, the rotatable rotor and the at least one pad or roller being supported for rotation about an axis of rotation by the second housing portion when the first and second housing portions are engaged and when the first and second housing portions are disengaged; a conduit supported by the first housing portion when the first and second housing portions are engaged and when the first and second housing portions are disengaged, the conduit having a flexible portion arranged within the recessed groove and within at least a portion of the annular path of the at least one pad or roller to be engaged at locations along the annular path by the at least one roller or pad and to receive a force from the at least one roller or pad in a direction parallel to the axis of rotation of the rotor when the second housing portion and the first housing portion are engaged, the flexible portion of the conduit being resiliently collapsible at the locations of engagement of the at least one roller or pad to provide a pumping action as the rotor rotates the at least one roller or pad along the annular path while the second housing portion and first housing portion are engaged, the conduit being connectable in fluid flow communication with an injection site; a reservoir having an interior volume for containing a fluid, the interior volume of the reservoir being in fluid flow communication with the conduit; and a drive device supported by the second housing portion and operatively coupled to the rotor for selectively rotating the rotor; wherein the conduit support surface, reservoir and rotatable rotor are aligned along an axis parallel to the axis of rotation of the rotor when the second housing portion is engaged with the first housing portion, and wherein the recessed groove in the conduit support surface and the flexible portion of the conduit are located between the reservoir and the rotatable rotor when the second housing portion is engaged with the first housing portion; and wherein the at least one pad or roller is connected to the rotatable rotor and engages the flexible portion of the conduit when the second housing portion is engaged with the first housing portion and disengages from the flexible portion of the conduit when the second housing portion is disengaged from the first housing portion.