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Peristaltic pump latching mechanism

  • US 4,735,558 A
  • Filed: 04/08/1986
  • Issued: 04/05/1988
  • Est. Priority Date: 04/08/1986
  • Status: Expired due to Fees
First Claim
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1. A latching mechanism having locking cams and latching cams for a peristaltic pump that provides a prescribed roller head tension said mechanism comprising in combination:

  • a disposable tubing cassette having a length of flexible tubing and means for supporting the length of flexible tubing and further including tabs projecting outwardly from the sides of the tubing cassette for engagement by a pair of locking cams and a pair of latching cams;

    a pump housing into which the disposable tubing cassette is inserted;

    a pump roller head rotatably attached to said pump housing;

    a pair of spring-loaded latchhcing cams rotatably attached to the sides of the pump housing for engaging the disposable tubing cassette and urging the length of flexible tubing and means for supporting the disposable tubing cassette against the pump roller head to provide the prescribed roller head tension;

    each of said latching cams including an indented portion for engaging the disposable tubing cassette, for unlocking the latching cams when the disposable tubing cassette is first inserted into the pump housing and locking the latching cams when the disposable tubing cassette is removed from the pump housing; and

    a pair of locking cams rotatably attached to the sides of said pump housing which along with the pair of springs lock the latching cams when the latching cams are disengaged from the disposable tubing cassette.

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