US 12,213,807 B2
System and method for positioning a sensor on a subject
Benjamin Ver Steeg, Redlands, CA (US); Amit Singh Nagra, Altadena, CA (US); and Haydn Frederick Jones, London (GB)
Assigned to Rockley Photonics Limited, Altrincham (GB)
Filed by ROCKLEY PHOTONICS LIMITED, Altrincham (GB)
Filed on Aug. 3, 2022, as Appl. No. 17/817,321.
Claims priority of provisional application 63/230,590, filed on Aug. 6, 2021.
Prior Publication US 2023/0038906 A1, Feb. 9, 2023
Int. Cl. A61B 5/00 (2006.01); A61B 5/024 (2006.01)
CPC A61B 5/6835 (2013.01) [A61B 5/0075 (2013.01); A61B 5/02416 (2013.01); A61B 5/6833 (2013.01); A61B 5/7235 (2013.01); A61B 5/7278 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A system, comprising:
a sensor module comprising at least one of a spectrophotometer or a photoplethysmography sensor;
a cap having a porous top; and
an instrument holder configured to temporarily hold each of the sensor module and the cap, and comprising:
a flexible fabric portion configured to be secured to a subject by an adhesive, and
a rigid portion secured to the flexible fabric portion and comprising a socket defining an aperture, the socket comprising:
a flat base secured to the flexible fabric portion;
a plurality of straight walls that extend away from the flat base and that surround the aperture and form a plurality of internal corners of the aperture; and
a detent comprising a plurality of rounded ribs or rounded recesses in the plurality of straight walls, the plurality of rounded ribs or rounded recesses being configured to hold the sensor module by engaging, via a snap fit, a corresponding plurality of rounded recesses or rounded ribs of the sensor module, and to hold the cap by engaging, via a snap fit, a corresponding plurality of rounded recesses or rounded ribs of the cap,
wherein each of the plurality of rounded ribs or rounded recesses in the plurality of straight walls is spaced apart, along the plurality of straight walls, from both the flat base and a distal edge of the corresponding straight wall of the plurality of straight walls, the distal edge being distal to the flat base,
wherein a horizontal cross section of the sensor module and a horizontal cross section of the aperture match,
wherein the instrument holder is configured so that the sensor module contacts the skin of the subject when installed in the instrument holder, and
wherein the instrument holder is configured such that, when the sensor module is held by the instrument holder, a maximum distance by which any portion of the sensor module is movable, relative to the instrument holder, in both translational directions along each of three orthogonal axes is 1 mm or less, and a maximum extent to which any portion of the sensor module is rotatable, relative to the instrument holder, in both rotational directions about each of the three orthogonal axes is 2.5 degrees or less.