Patent ID: 8715236

Claim:
A mobile infusion device that does not use gravity to expel fluid from a bag, wherein the mobile infusion device comprises: a housing including a first portion shaped to define a central chamber in the housing and a second portion shaped to define a first opening in the housing that is in communication with the central chamber and adapted to receive a portion of the bag during use; a rotation assembly mounted at a fixed location in the housing, the rotation assembly including a first member and a second member mounted in opposition to one another located within the central chamber and a spring mechanism operatively coupled to the first member to rotate the first member in order to move the bag between the first and second members thereby applying a force to a portion of the bag to expel fluid from the bag during use; and a control mechanism operatively coupled to the rotation assembly, the control mechanism having a control assembly to control rotation of the rotation assembly and a user interface coupled to the control assembly to allow a user to select one of a start mode, and a stop mode for the mobile infusion device during use, wherein the opening, the central chamber and the first and second members have a length that is long enough to accommodate bags of various sizes.