US2015157228A1PendingUtilityA1

Surgical Access

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Assignee: NUVASIVE INCPriority: Dec 23, 1998Filed: Feb 13, 2015Published: Jun 11, 2015
Est. expiryDec 23, 2018(expired)· nominal 20-yr term from priority
Inventors:James F. MarinoCorbett W. StoneTroy K. ChristopherJeffrey J. BlewettBrian S. Kelleher
A61B 17/3423A61B 5/04001A61B 5/4893A61B 5/4029A61B 5/4041A61B 5/296A61B 18/148A61B 2018/00595A61B 17/1757A61B 2018/00589A61B 18/1487A61B 17/3439A61N 1/0551A61B 17/3417A61B 2017/3484A61B 5/316A61B 5/388
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Claims

Abstract

An expandable tip cannula system, comprising: a hollow cannula shaft having a proximal end and a distal end; and an expandable tip mounted at the distal end of the hollow cannula shaft, the expandable tip comprising a plurality of generally-triangular shaped petals held together in a radially-inwardly tapered arrangement between adjacent petals, each petal comprising a nerve sensing electrode disposed therein.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A nerve surveillance system, comprising:
 a cannula having an expandable distal end with a plurality of nerve surveillance electrodes disposed thereon.

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