FINE-NEEDLE ASPIRATION CELL SAMPLING METHODS AND APPARATUS

摘要

It has developed an apparatus and methods for performing needle biopsies using a fine needle. Each method and apparatus comprises a needle (2) having an opening which can be obstructed during the phases of both penetration and withdrawal of the suction cycle. In an apparatus, the needle (2) is connected to a fixed housing (1) having a syringe (4) and a stylus (3). After penetration of the targeted area, it reciprocates the needle a predetermined number of times, determined by the performance of the desired cytological sample. The needle is not blocked during the phase of back and forth cycle. We developed a device both manual and automatic running biopsy procedures by aspiration using a fine needle, according to the method described. Many protective sleeve configurations (6) for various biopsy applications are illustrated, including those for prostate biopsies and breast or other soft tissue and used in conjunction with ultrasonic transducers. Was developed other needle configurations in order to improve the performance of the sample, reduce the infiltration and to minimize clogging of the needle.