The Use of an Implantable Insulin Pump in the Treatment of Type II Diabetes

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Abstract
We treated five patients with Type II diabetes by means of a subcutaneously implanted intravenous insulin pump and compared their metabolic response with that observed during conventional insulin therapy. The use of the pump improved control of glycemia, as manifested by reductions in mean plasma glucose (from 188±46 to 106±12 mg per deciliter [mean ±S.D.]), fasting glucose (from 187±42 to 80±13 mg per deciliter), and postprandial glucose (from 287±74 to 182±29 mg per deciliter), together with a diminution of glycemic excursion and normalization of glycosylated hemoglobin A1 (from 12.1 ±2 to 8.0±1 per cent). At the end of the study the pumps had been in place for a mean of 7.0 months (range, 5.5 to 9.7 months) without mishap and with good patient acceptance. Our data suggest that improved blood glucose control can be achieved by means of a permanently implanted continuous insulin-infusion device in ambulatory patients with Type II diabetes who require insulin, and that the need for daily insulin injections can thereby be eliminated. (N Engl J Med. 307; 1982:265–70.)