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PubMed1977

[Sterilization by partial resection of the oviducts via bipolar electrocoagulation (author's transl)].

A total of 2,357 sterilizations via bipolar coagulation was effected at the University Clinics of Gynecology at Basel and Tübingen since 1972 and 1975 respectively. Of these, 2,143 were effected via laparoscopy. The following complications occurred which required laparotomy: in two cases, hemorrhages from the abdominal cavity as a result of the second puncture, in one case from the mesosalpinx, and, as a late complication, two extrauterine pregnancies. The method failed in the case of the two extrauterine pregnancies and possibly also in the case of two doubtful intrauterine pregnancies (0.8--1.7 per thousand). Today this surgical measure is being performed in Tübingen exclusively by the single-puncture technique an increasingly under local anesthesia. The advantages of the method are an accurately determinable coagulation zone, sparing of the mesosalpinx, low incidence of complications, absence of life-threatening incidents, and low failure quota.

Anesthesia, Local↗
PubMed1987

Regulated high frequency diathermy for bipolar electrocoagulation--a new method for the treatment of carcinoma of the bladder.

In the endoscopic treatment of bladder cancer, especially for stages beyond T2, transurethral resection does not seem to be sufficient. The risk of bladder wall perforation, the possibility of incomplete resection, seeding of tumor cells and high recurrence rates support the former statement [6]. Results of a multicentre prospective randomised study have exemplified that irradiation with the Neodymium-YAG Laser has been a reasonable alternative in the therapeutic approach to bladder cancer [2]. Diathermy coagulation must produce a sufficiently deep, homogeneous and well demarcated tissue necrosis. The coagulation depth has to be adjustable and heat production during coagulation should not lead to bladder wall perforation and consequent damage to the bowel. These criteria were investigated using regulated bipolar high frequency diathermy. The innovation in this method is, that thermal side effects on the tissue, e.g. vaporisation and carbonisation are prevented by a protective relay with constant current flow. Animal experimental studies have shown that this method meets all postulated requirements and therefore clinical trials can proceed.

Animals↗