A new device for sonographically controlled follicular puncture was introduced which improves both safety and comfort during egg retrieval. A steering attachment developed especially for the transducer of the DIASONICS DS 1 sector scanner increased the precision of transabdominal-transvesical follicular puncture. The "two-instrument method" (aspiration needle gliding smoothly within a trocar) ensured highly reliable, continuous sonographic imaging of the aspiration needle as well as precise puncture without the procedure being hindered by tissue resistance. Sonographically controlled follicular puncture under epidural anesthesia reduces procedure-related risk and patient stress.
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