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Portable apparatus for the determination of upper gastrointestinal function in terms of pH values and clinical uses thereof

  • US 4,774,956 A
  • Filed: 04/29/1986
  • Issued: 10/04/1988
  • Est. Priority Date: 05/02/1985
  • Status: Expired due to Fees
First Claim
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1. A portable instrument for measuring intraluminal pH comprising:

  • (a) a means for continually measuring pH at an intraluminal site;

    (b) a timing means for determining the time at which a pH value is measured and for pre-selecting the duration of time and the time at which a pH value will be measured;

    (c) a first storage means for retrieving and storing each measured pH value and the time at which said pH value is measured;

    (d) a means for retrieving from said storage means and displaying a measured pH value and the time at which said pH value is measured;

    (e) a second storage means for receiving and storing a pre-selected pH value;

    (f) a means to enter said pre-selected pH value into said second storage means;

    (g) means to retrieve from said first and second storage means a measured pH value and said pre-selected pH value and to compare said pH values;

    (h) means for generating a signal when said measured pH value is greater than or less than said preselected pH value;

    (i) means to retrieve measured pH values from said frist storage means and to calculate a mean or median pH value and total number of pH values over a pre-selected time period; and

    (j) means to control a distribution of electrical signals within said portable instrument electrically conected to said means (a-i).

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