Motorized drug delivery device with needles and roller

摘要

A delivery device (10) includes a roller (12) rotatably mounted on an axle (14), a reservoir (40), and one or more hollow needles (16) positioned in the roller (12) in fluid communication with the reservoir (40). As the roller (12) rotates about the longitudinal axis (17) of the axle (14), a piston (30) pushes contents of the reservoir (40) through the needles (16). An actuator (36) is operatively connected to the piston (30) for increasing a pushing force of the piston (30).

主权项

1. A delivery device comprising:
a roller rotatably mounted on an axle; a reservoir; at least one hollow needle positioned in said roller and in fluid communication with said reservoir, wherein as said roller rotates about a longitudinal axis of said axle, contents of said reservoir pass through said at least one hollow needle; a piston arranged with respect to said roller such that there is relative sliding motion between said roller and said piston as said roller rotates about the longitudinal axis of said axle, said relative sliding motion causing said piston to push contents of said reservoir through said at least one needle; and an actuator operatively connected to said piston for increasing a pushing force of said piston that pushes the contents of said reservoir through said at least one needle, and wherein said actuator comprises a motor coupled to said axle for rotating said axle, and said piston is threadedly coupled to said axle, such that increased torque supplied by said actuator to rotate said axle increases the pushing force of said piston.