Patent ID: 6267559
Filing Date: 2001-07-31
Classification: A61M,F04B

Abstract:
A peristaltic pump, comprising:a drive means;a cam shaft driven by said drive means;a plurality of cams positioned at spaced intervals around the circumference of said cam shaft;a plurality of elongate fingers cooperating with said cams, said fingers capable of at least partly occluding an intravenous drip tube at multiple points along said tube's path; anda torque compensation system, including:at least one torque compensation cam positioned on said cam shaft;at least one torque compensation cam follower operatively connected to said torque compensation cam; andan energy storage element operatively connected to said torque compensation cam follower, which forcibly engages said torque compensation cam follower against said torque compensation cam,such that in use said torque compensation system decreases torque produced at said drive means thus reducing overall power consumption of said pump.