Patent ID: 9655526
Date: 2017-05-23
CPC Classifications: A61B,G01L,G16H,Y02A

Claim:
1. A sensor for detecting a physiological parameter, the sensor comprising: a multi-mode optical fiber comprising an inner core, a cladding layer, and an outer coating, wherein a core diameter is greater than 50% of a cladding diameter; an LED (light emitting diode) light source coupled to a first end of the optical fiber; an LED driver electrically coupled to the LED light source and configured to regulate a power level of the LED light source; a receiver coupled to a second end of the optical fiber, the receiver configured to sense changes in an intensity of light traveling through the optical fiber; and a deformer structure is a single mesh layer formed of mesh having openings disposed therein, wherein a surface area of the openings is between 30% and 60% of a total surface area of the mesh layer; wherein the optical fiber is arranged in a plane in contact with a surface of the deformer structure such that an application of force onto the sensor results in a first portion of the optical fiber bending into an opening of the mesh layer and a second portion of the optical fiber flexing against the mesh; a total diameter of the optical fiber consists of a diameter across the inner core, the cladding layer, and the outer coating; the mesh layer is formed of interwoven fibers; wherein a diameter of each interwoven fiber is ±25% of the total diameter of the optical fiber.