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Free-flow protection devices and methods

  • US 5,954,485 A
  • Filed: 08/14/1996
  • Issued: 09/21/1999
  • Est. Priority Date: 08/14/1996
  • Status: Expired due to Fees
First Claim
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1. A cassette for attachment to a pump, the cassette enclosing a reservoir of fluid with a tube extending from the reservoir, the cassette comprising:

  • a pressure plate on which the tube is attached, the pressure plate being selectively attachable to the pump so that when the tube and pressure plate are attached to the pump the pump effects movement of fluid through the tube; and

    a free-flow protection device responsive to the pressure plate being engaged to the pump to move the free-flow protection device from a tube occluding state to a free-flow state, wherein the free-flow protection device is internal to the tube.

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