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Infusion arrangement and method

  • US 9,320,851 B2
  • Filed: 02/06/2014
  • Issued: 04/26/2016
  • Est. Priority Date: 02/07/2013
  • Status: Active Grant
First Claim
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1. An arrangement for administering a predetermined amount of a substance into an organism, the arrangement comprising:

  • a member adapted to provide information indicative of a tissue resistance against flow of a fluid containing the substance upon administration into the tissue;

    a controller adapted to adjust an administration characteristic of the fluid based on the information such as to achieve an intended absorption rate of the substance;

    a pump adapted to be coupled to a reservoir of the fluid and adapted to drive the fluid;

    a conduit, in particular comprising a flexible tubing, for guiding the fluid drive by the PUMP from the reservoir into the tissue, the conduit having one end, a cannula, inserterable into the tissue and having another end coupled to the pump unit;

    wherein the controller is adapted to control the pump to adjust the flow rate of the fluid to comply with the adjusted administration characteristic;

    wherein the member comprises a pressure sensor and is adapted to measure a pressure of the fluid in the conduit;

    wherein the arrangement is adapted, using the pressure sensor, to determine a pressure difference based ona first pressure measurement, when the cannula is inserted into the tissue; and

    a second pressure measurement, when the cannula is external to the tissue at atmospheric pressure.

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