| 摘要 |
<p>The present invention provides a hollow tubular shaped biopsy needle (N) having a hollow elliptical cross section shaped lumen (13) therethrough, and the method for fabricating the needle and the apparatus for operating the needle (N). The structure of the biopsy needle (N) of this invention is simple and easy to fabricate, and thus the production cost can be reduced. In spite of smaller diameter of this invented biopsy needle (N), the size of the extracted sample will be bigger comparing to the other biopsy needle and wounds of the patient can be less. The apparatus of this invention will help to reduce the operating force during extracting tissue samples, and helps rotation and straight movements of the needle (N).</p> |
