US 12,201,451 B2
Optical shunt reduction using optically absorptive materials in a medical sensor
Linden A. Reustle, Milliken, CO (US); Jacob D. Dove, Lafayette, CO (US); Sarah L. Hayman, Boulder, CO (US); Derek L. Moody, Longmont, CO (US); and Shai Fleischer, Modiin (IL)
Assigned to COVIDIEN LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Oct. 30, 2020, as Appl. No. 17/085,094.
Prior Publication US 2022/0133233 A1, May 5, 2022
Int. Cl. A61B 5/00 (2006.01)
CPC A61B 5/6833 (2013.01) [A61B 5/0002 (2013.01); A61B 5/0059 (2013.01); A61B 2562/12 (2013.01); A61B 2562/164 (2013.01); A61B 2562/185 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A patient monitoring sensor, comprising:
a communication interface, through which the patient monitoring sensor can communicate with a monitor;
a light-emitting diode (LED) communicatively coupled to the communication interface;
a detector communicatively coupled to the communication interface and capable of detecting light;
at least one detector terminal that connects to the detector via photodetector lines of a flex circuit;
at least one LED terminal that connects to the LED via LED lines of the flex circuit;
an optically absorptive material provided at least partially between the LED and the detector to reduce or prevent shunting of the light to the detector, wherein the optically absorptive material comprises a first electromagnetic shielding film portion provided at least partially over the photodetector lines of the flex circuit;
a second electromagnetic shielding film portion provided on a first flap that folds over the at least one detector terminal; and
a third electromagnetic shielding film portion provided on a second flap that folds relative to the first flap, wherein the at least one LED terminal is positioned on the second flap in an unfolded configuration.