DOUBLE ACTION INFUSION PUMP

摘要

An infusion system includes a double action infusion pump. The pump includes a cylinder and a reciprocating piston received within the cylinder, the reciprocating piston separating a first pump chamber from a second pump chamber of the cylinder. A reciprocating motor is coupled with the reciprocating piston, and the first and second pump chambers alternate between filling and evacuating conditions with reciprocation of the reciprocating piston through operation of the reciprocating motor, and the speed of reciprocation is varied to provide a continuous output of fluid between the first and second pump chambers. A fluid source and a catheter are optionally coupled with the double action infusion pump. The catheter includes one or more infusion ports near a catheter distal portion, and the one or more infusion ports receive and expel the continuous output of fluid from the double action infusion pump.

主权项

1. An infusion system, comprising:
an infusion pump including a chamber and a piston disposed within the chamber, the chamber having a first section, a second section and a transition section positioned between the first section and the second section; and a catheter coupled to the infusion pump; wherein the piston moves through the first section at a first speed, the second section at a second speed, and the transition section at a third speed; and wherein the first, the second or both the first and second speeds are greater than the third speed.