US 11,701,012 B2
Microcatheter sensor design for minimizing profile and impact of wire strain on sensor
Gerry McCaffrey, Ballybrit (IE); Christopher Murphy, Ballybrit (IE); Sean Ward, Ballybrit (IE); and Fiachra Sweeney, Ballybrit (IE)
Assigned to MEDTRONIC VASCULAR, INC., Santa Rosa, CA (US)
Filed by Medtronic Vascular, Inc., Santa Rosa, CA (US)
Filed on Feb. 16, 2021, as Appl. No. 17/176,629.
Application 17/176,629 is a continuation of application No. 14/920,722, filed on Oct. 22, 2015, granted, now 10,973,418.
Application 14/920,722 is a continuation in part of application No. 14/595,884, filed on Jan. 13, 2015, granted, now 10,201,284, issued on Feb. 12, 2019.
Claims priority of provisional application 62/068,052, filed on Oct. 24, 2014.
Claims priority of provisional application 62/012,628, filed on Jun. 16, 2014.
Prior Publication US 2021/0161409 A1, Jun. 3, 2021
Int. Cl. A61B 5/021 (2006.01); A61B 5/0215 (2006.01); A61B 5/00 (2006.01); A61B 5/02 (2006.01)
CPC A61B 5/02141 (2013.01) [A61B 5/02007 (2013.01); A61B 5/0215 (2013.01); A61B 5/6852 (2013.01); A61B 2562/0247 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A catheter comprising:
an elongate shaft including a proximal portion and a distal portion, the elongate shaft having a shaft wall, the shaft wall having a shaft wall outer surface and a shaft wall inner surface, the shaft wall inner surface defining a guidewire lumen, further wherein the shaft wall defines a pressure sensor wire lumen,
a communication wire extending proximally through the pressure sensor wire lumen;
a pressure sensor coupled to the shaft wall outer surface at the distal end of the elongate shaft, wherein the pressure sensor is spaced apart from a distal end of the communication wire forming a gap along the shaft wall outer surface;
electrical couplings provided in the shaft wall along the length of the gap and configured to electrically couple the pressure sensor with the communication wire,
wherein the communication wire is electrically coupled with the electrical couplings at an outer surface of the shaft wall and the pressure sensor and the communication wire are configured to move independently from one another in response to bending forces of the shaft wall resulting from when the elongate shaft is tracked to a treatment site within a vasculature.