US 11,986,213 B2
Pressure-sensing implant tools
Vladimir P. Nikolski, Blaine, MN (US); Linnea R. Lentz, Stacy, MN (US); Amy E. Thompson-Nauman, Ham Lake, MN (US); Teresa A Whitman, Dayton, MN (US); and Mark T. Marshall, Cape Coral, FL (US)
Assigned to Medtronic, Inc, Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Oct. 1, 2021, as Appl. No. 17/492,102.
Application 17/492,102 is a continuation of application No. 16/050,626, filed on Jul. 31, 2018, granted, now 11,134,984.
Prior Publication US 2022/0015800 A1, Jan. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/00 (2006.01); A61B 17/00 (2006.01); A61B 17/34 (2006.01); A61M 25/00 (2006.01); A61N 1/05 (2006.01); A61B 17/32 (2006.01); A61M 25/01 (2006.01); A61N 1/39 (2006.01)
CPC A61B 17/3468 (2013.01) [A61B 17/00234 (2013.01); A61B 17/3415 (2013.01); A61M 25/008 (2013.01); A61N 1/0504 (2013.01); A61B 2017/00331 (2013.01); A61B 2017/320056 (2013.01); A61B 17/3494 (2013.01); A61M 25/0194 (2013.01); A61N 1/3968 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for determining a position of a medical device, the medical device comprising:
an elongate body defining a proximal end and a distal end configured to advance through a plurality of diaphragmatic attachment layers; and
at least one pressure sensor, wherein the at least one pressure sensor is configured to sense a pressure while advancing the elongate body through the plurality of diaphragmatic attachment layers of a patient in an anterior mediastinum, the sensed pressure being at least one of a pressure within the elongate body or at the distal end of the elongate body,
wherein the method comprises, by processing circuitry of a medical device system comprising the medical device:
receiving, from the at least one pressure sensor, a signal corresponding to the pressure at each of a plurality of time points during a procedure to advance the distal end of the elongate body through the diaphragmatic attachment layers into a pleural cavity of the patient between a heart and a lung of the patient;
determining, for each of the plurality of time points, a corresponding amplitude value of the signal;
determining a difference between two amplitude values of the signal;
determining an amplitude oscillation status of the signal;
determining, based on the difference between the two amplitude values and the amplitude oscillation status, a position of the distal end of the elongate body relative to the plurality of diaphragmatic layers; and
providing, via a user interface, an indication of the position of the distal end of the elongate body relative to individual attachment layers of the plurality of diaphragmatic attachment layers.