| 摘要 |
PURPOSE: To make examination possible without removing a needle from a device by contacting an automatic tissue sampling apparatus consisting of a first inner needle and a second outer needle engaged to two yokes with an objective position of a biopsy and moving the device automatically and quickly to take and accommodate a sample. CONSTITUTION: On yokes 46, 47 mounted within a housing 25 of an automatic extraction device for tissue 20, there are held a first inner needle 86 and a second outer needle 96 which can move the inner needle 86 freely. Yokes 46, 47 are accelerated forward by coil springs 55, 56. A biopsy needle system 22 consisting of a hollow axis 97 and a cutting blade 89 is contacted with a desired position of a biopsy and a lever 28 is operated as shown by an arrow A. An axis 40 is moved rearward to pull yokes 46, 47 rearward against coil springs 55, 56. When the lever 28 is returned, the first inner needle 86 and the second outer needle 96 are moved within the biopsy automatically and quickly to cut and accommodate a part of a tissue, and thereafter they are returned to an original position. Thereby, inspection of a sample can be carried out while the needle is positioned as such without being removed from the device. |
