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Intravenous pump chamber

  • US 4,290,346 A
  • Filed: 04/30/1979
  • Issued: 09/22/1981
  • Est. Priority Date: 04/30/1979
  • Status: Expired due to Term
First Claim
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1. An intravenous pump chamber for an intravenous pump of the peristaltic type having three contact members with outer contact members programmed to constitute valve members and the central member a pumping member comprising:

  • a pump chamber defined by a rigid housing member presenting a central cavity portion;

    tubular portions extending from said pump chamber in a fluid communication with said cavity;

    a length of intravenous tubing secured to each tubular portion, said tubing presenting a contact surface and being capable of total collapse by one of said two outer contact members;

    a diaphragm member positioned over said cavity and contacting said pump chamber adjacent said cavity portion; and

    combined mechanical and sealing means operatively associated with said diaphragm member and said housing to retain said diaphragm in a taut manner over said cavity portion, said mechanical means providing an initial and subsequent stretching of said diaphragm member independently of said sealing means. pg,11

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