<p>A biopsy device (20) having a translating and rotating cutter (104) disposed within an outer cannula (80) is disclosed. The translational speed of the cutter (104) is varied using a variable pitch member (142). The variable pitch member (142) can include a shaft having a relatively coarse threaded portion (146) for rapid cutter advance and a relatively finer threaded portion (148) for cutter advance during tissue severing.</p>
申请公布号
CA2517242(C)
申请公布日期
2015.01.20
申请号
CA20042517242
申请日期
2004.02.24
申请人
ETHICON ENDO-SURGERY, INC.
发明人
THOMPSON, BENNIE;MCCOMBS, ELIZABETH;HUNT, JOHN V.;KRETCHMAN, JOHN A.;HIBNER, JOHN A.