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Apparatus and method for reducing power consumption in a peristaltic pump mechanism

  • US 6,267,559 B1
  • Filed: 12/21/1999
  • Issued: 07/31/2001
  • Est. Priority Date: 12/21/1999
  • Status: Expired due to Term
First Claim
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1. 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; and

    a 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; and

    an 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.

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