[Ultrasound-controlled fine-needle puncture with a specially prepared puncture needle].

The described puncture needle with dual amplified point has been successfully applied at the Medical Clinic of the County Hospital Halle for more than half a year now. Better reflecting capacity in both vitro and vivo results from preparation of the needle point's surface. The more clear visibility of the needle point in the ultrasonic sectional view results in a better display during the whole process of puncture and makes possible a better locating also under difficult sonographic conditions. By the application of the described puncture needle the safety of the ultrasonic directed fine-needle puncture increases for both patient and examiner.