专利名称：Inverted conical expandable retractor发明人：Mark S. Ortiz,Brandon L.
Livingston,Dhananjay V. Patil,Frederick E.Shelton, IV,Jerome R. Morgan
申请号：US12636020申请日：20091211公开号：US08231570B2公开日：20120731
专利附图：
摘要：Access devices and related methods are disclosed that generally involveflexible or adjustable cannulas that have a substantially cylindrical insertion configuration
and a substantially conical expanded configuration. Various methods and features areprovided for transitioning the cannula from the insertion configuration to the expandedconfiguration while the access device is inserted through tissue to form a conical openingthrough the tissue. Examples include cables, biasing elements, retaining elements,bimodal rings, and coil springs. The devices and methods disclosed herein can allow forimproved retention of the access device, improved angulation of instruments passedthrough the access device, and can increase the integrity of a seal formed between theaccess device and surrounding tissue.
申请人：Mark S. Ortiz,Brandon L. Livingston,Dhananjay V. Patil,Frederick E. Shelton,IV,Jerome R. Morgan
地址：Milford OH US,Mason OH US,Mumbai IN,Hillsboro OH US,Cincinnati OH US
国籍：US,US,IN,US,US
代理机构：Nutter McClennen & Fish LLP
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