US 10,376,208 B2
Nerve mapping system
Christopher Wybo, Highland, MI (US)
Assigned to Innovative Surgical Solutions, LLC, Wixom, MI (US)
Filed by Innovative Surgical Solutions, LLC, Wixom, MI (US)
Filed on Oct. 5, 2016, as Appl. No. 15/286,323.
Application 15/286,323 is a continuation in part of application No. 14/032,924, filed on Sep. 20, 2013, granted, now 9,622,684.
Prior Publication US 2017/0020450 A1, Jan. 26, 2017
Int. Cl. A61B 5/00 (2006.01); A61B 5/11 (2006.01); A61B 5/05 (2006.01); A61B 34/10 (2016.01); G06F 17/50 (2006.01)
CPC A61B 5/4893 (2013.01) [A61B 5/05 (2013.01); A61B 5/1104 (2013.01); A61B 5/1107 (2013.01); A61B 5/4029 (2013.01); A61B 34/10 (2016.02); G06F 17/5009 (2013.01); A61B 5/746 (2013.01); A61B 2034/105 (2016.02); A61B 2505/05 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A nerve mapping system comprising:
an elongate medical device having a cylindrical shape and configured to explore an intracorporeal treatment area of a subject, wherein the elongate medical device includes:
a distal end portion tapering to a tip;
a central axis intersecting the tip and extending through a center of the elongate medical device;
a first electrode disposed in a first location at the tip and on the central axis; and
at least one second electrode spaced apart from the first electrode and radially offset from the central axis in a second location;
a non-invasive mechanical sensor configured to provide a mechanomyography output signal corresponding to a monitored mechanical response of a muscle innervated by the nerve; and
a processor in communication with the first electrode, the at least one second electrode, and the non-invasive mechanical sensor, wherein the processor is configured to:
while the elongate medical device explores the intracorporeal treatment area, receive an indication of the first location of and the second location within the intracorporeal treatment area;
provide an electrical stimulus to the first electrode and the at least one second electrode such that the electrical stimulus may be transmitted to intracorporeal tissue at the first location and the second location;
receive an indication of a magnitude of the monitored mechanical response of the muscle from the mechanomyography output signal, wherein the monitored mechanical response of the muscle is induced by the electrical stimulus;
determine a distance to a nerve from the first location and the second location using a) a magnitude of the electrical stimulus and b) the monitored mechanical response of the muscle to the electrical stimulus without using an electromyography signal corresponding to an electrical potential of the muscle and skin of the subject; and
construct a virtual three-dimensional model of the nerve using the determined distance to the nerve at the first location and the second location to thereby precisely guide the elongate medical device within the intracorporeal treatment area without contacting the nerve.