US 12,185,973 B2
Percutaneous access needle guidance systems and methods using an access needle and guidance pad
Jessica N. Stem, Coon Rapids, MN (US); and Connor Tower, Hudson, MA (US)
Assigned to Gyrus ACMI, Inc., Westborough, MA (US)
Filed by GYRUS ACMI, INC., Southborough, MA (US)
Filed on Dec. 2, 2020, as Appl. No. 17/109,886.
Claims priority of provisional application 62/942,803, filed on Dec. 3, 2019.
Prior Publication US 2021/0161554 A1, Jun. 3, 2021
Int. Cl. A61B 5/06 (2006.01); A61B 7/00 (2006.01); A61B 17/34 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/3403 (2013.01) [A61B 17/3423 (2013.01); A61B 17/3468 (2013.01); A61B 5/062 (2013.01); A61B 2017/00039 (2013.01); A61B 2017/00115 (2013.01); A61B 2017/3413 (2013.01); A61B 2017/3425 (2013.01); A61B 2017/3492 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A guidance system for performing a percutaneous access incision, the guidance system comprising:
an access needle comprising:
a shaft;
a tip located at a distal end of the shaft; and
a sensor; and
a guidance pad comprising:
a dermal side;
an outward side;
an opening to receive the access needle, the opening extending between the dermal side and the outward side;
a feedback device viewable from the outward side to provide an indication of a depth of the tip beneath the guidance pad and a trajectory of the shaft from the opening, the feedback device comprising:
an array of a plurality of columns of light emitters, wherein:
each of the plurality of columns of light emitters extends along a radial axis extending through the opening;
each light emitter in the plurality of columns of light emitters is spaced apart from each other along one of the radial axes at an axial interval; and
the plurality of columns of light emitters are spaced apart from each other along circumferential intervals relative to the opening; and
a coordinate system displayed on the guidance pad and visible from the outward side, the coordinate system comprising a polar coordinate system having radially extending axes aligned along each of the plurality of columns;
wherein each light emitter in the plurality of columns of light emitters is responsive to alter a property of each light emitter in response to proximity to the sensor to provide an angle for one of the plurality of columns in the polar coordinate system and an axial distance along the one of the plurality of columns in the polar coordinate system.