Patent ID: 9468715
Filing Date: 2016-10-18
CPC Classification: A61M,F04B

Claim Text:
1. An infusion pump device, comprising: a housing which is divided into at least three operating layers positioned one above the other, wherein a first operating layer includes an epicyclic gear means comprising a rotatable central gear, a stationary outer ring gear surrounding the central gear, and movable planet gears which are arranged between the central gear and the ring gear and in movable engagement with both the central gear and the ring gear, a second operating layer includes a roller bearing means comprising a stationary outer ring and a movable inner roller arrangement, wherein the inner roller arrangement comprises a rotatable central roller and movable planet rollers which are arranged between the central roller and the outer ring and in movable frictional direct engagement with both the central roller and the outer ring and the inner roller arrangement is in movable arrangement with the outer ring and coupled with the epicyclic gear means so as to provide a rotational bearing for the central and planet gears, and a third operating layer includes a rotary peristaltic pump means comprising a stationary flexible, preferably resilient, tubing which includes a bent portion having an essentially part-cycle form, and a rotor which is provided with engagement elements for locally engaging the bent portion of the flexible tubing so as to squeeze it during rotation for a pump action, wherein the rotor is coupled with the central gear of the epicyclic gear means so that a torque is transferred from the central gear to the rotor.