This instrument set for a single puncture technique of laparoscopic cholecystotomy was developed in 100 phantom tests with pig gallbladders and was later evaluated in 12 animal experiments. No complications were observed. After clinical development, treatment on an outpatient basis under local anaesthesia seems possible. For the patient this would mean avoiding general anaesthesia, shorter hospitalization, pain reduction and good cosmetic results, while reducing expenditure for the public health authorities at the same time. To avoid recurrent stones, diet and low-dose drug therapy should be considered. Because the procedure is minimally invasive, repetition of the laparoscopic procedure seems justified if stones recur.