Patent ID: 9017282
Filing Date: 2015-04-28
Classification: A61B,A61M

Abstract:
1. A fluid injection system comprising: a channel at a distal end of the system, the channel comprising an input end and an outlet end; a shaft positioned at least partially within the channel and comprising a proximal shaft end, a closed distal shaft end, and at least one protrusion extending from an outer surface of the shaft adjacent the proximal shaft end; a rotatable, stepped stop member comprising multiple step portions along a proximal edge of the member, wherein the stop member is positioned concentrically around the shaft, and wherein the shaft is linearly translatable within the channel in a distal direction for engagement of the at least one protrusion with at least one of the step portions and for pushing fluid from the outlet end of the channel; and a reservoir in fluid communication with the channel between the closed distal shaft end and the outlet end of the channel.