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Infusion hose for an infusion device with a bubble detector

  • US 5,811,659 A
  • Filed: 09/04/1996
  • Issued: 09/22/1998
  • Est. Priority Date: 01/04/1995
  • Status: Expired due to Fees
First Claim
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1. An infusion hose for an infusion device having a bubble detector, in which a column of liquid is maintained permanently at least in one section of the infusion hose and in which adjacent to this section is arranged ultrasound detector equipment incorporating an ultrasound transmitter and receiver positioned so that an acoustic signal from the transmitter passes diametrically through the column of liquid in the section of infusion hose to the receiver, the acoustic signal being used to detect inclusions of air in the column of liquid, characterized in that the section of infusion hose includes (a) substantially diametrically opposed contacts (3, 6;

  • 13,

         16) for making acoustic contact with the ultrasound transmitter and receiver, respectively, and (b) acoustic dampers (2, 4;

    12,

         14) for insulating the contacts (3, 6;

    13,

         16) from the surrounding area of the section, wherein the dampers (2, 4;

    12,

         14) each include an area (2;

         12) of lesser mass surrounding the respective contact (3, 6;

    13,

         16) and an area (4;

         14) of increased mass surrounding the area of lesser mass.

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