公开(公告)号：US10675008B1

公开(公告)日：2020-06-09

申请号：US14034767

申请日：2013-09-24

申请人： Seok Chang Ryu ,  Mark Cutkosky ,  Richard J. Black ,  Joannes Mario Costa ,  Behzad Moslehi ,  Fereydoun Faridian ,  Levy Oblea ,  Vahid Sotoudeh

发明人： Seok Chang Ryu ,  Mark Cutkosky ,  Richard J. Black ,  Joannes Mario Costa ,  Behzad Moslehi ,  Fereydoun Faridian ,  Levy Oblea ,  Vahid Sotoudeh

IPC分类号： A61B10/02 ,  A61B10/04 ,  A61B17/00 ,  A61B17/34

摘要： A biopsy needle has a cylindrical shell outer cannula and a stylet consisting of an inner stylet and outer stylet, both of which are inserted into the cylindrical cannula. The outer stylet has a series of strain relieved slits which provide bending over a deflection region in one direction, and the outer stylet is formed from a material such as a shape memory alloy (SMA) having a superelastic phase. The deflection is generated by an SMA wire spanning a deflection extent and attached to the outer stylet on either side of the deflection extent. The inner stylet, when positioned inside the outer stylet, has one or more actuation fibers which couple optical energy into the SMA wire, causing a deflection of the outer stylet over the deflection extent, with the optical energy provided to the actuation fibers for control of the deflection.