Photoplethysmography sensors and processes
AssigneeHuxley Medical, Inc.
InventorsBrennan Torstrick, Christopher Lee, Yanni Angelides, Mohsen Safaei, Claire Parnell, Don Griffin, Donald Mock
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to devices and processes that produce superior photoplethysmography (PPG) signals. In various embodiments, the present devices and processes leverage load backing, conformal contact, and strain isolation mechanisms to produce higher quality and amplitude PPG signals, and provide more repeatable results than previous devices and processes. In at least one embodiment, the devices discussed herein include a rigid support structure and elastic spacer for supporting a PPG sensor and various adhesive layers.
Claims20
A method comprising:
- preparing skin of a patient for attaching a patch;
- removing backing from the patch to expose a first adhesive and a second adhesive for attaching the patch to skin of a patient, the patch comprising:
- a photoplethysmography (PPG) sensor;
- a first area proximate the PPG sensor;
- a second area comprising a rigid support structure backing at least a portion of the second adhesive, the second area surrounding the first area;
- an elastic spacer operatively connected to the rigid support structure and the PPG sensor;
- and
- a vertical distance between a bottom of the patch and the PPG sensor;
- translationally and rotationally locating the patch on the patient based on at least one alignment feature;
- pressing the PPG sensor into the skin of the patient by affixing the patch to the skin of the patient via the first adhesive and the second adhesive, wherein:
- pressing the PPG sensor into the skin of the patient results in a force applied to the PPG sensor against the skin of the patient;
- the second area strain isolates the PPG sensor when the patch is affixed to the skin of the patient;
- and
- the force applied to the PPG sensor and the strain isolation of the PPG sensor mitigates skin strain and maintains skin contact between the PPG sensor and the skin of the patient.
A method comprising:
- preparing skin of a patient for attaching a patch;
- removing backing from the patch to expose a first adhesive and a second adhesive for attaching the patch to skin of a patient, the patch comprising:
- a photoplethysmography (PPG) sensor;
- a first area proximate the PPG sensor;
- a second area comprising a rigid support structure backing at least a portion of the second adhesive, the second area surrounding the first area;
- an elastic spacer operatively connected to the rigid support structure and the PPG sensor;
- and
- a vertical distance between a bottom of the patch and the PPG sensor;
- locating the patch on the chest of the patient based on at least one alignment feature;
- and
- pressing the PPG sensor into the skin of the patient by affixing the patch to the skin of the patient via the first adhesive and the second adhesive, wherein:
- pressing the PPG sensor into the skin of the patient results in a force applied to the PPG sensor against the skin of the patient;
- the second area strain isolates the PPG sensor when the patch is affixed to the skin of the patient;
- and
- the force applied to the PPG sensor and the strain isolation of the PPG sensor mitigates skin strain and maintains skin contact between the PPG sensor and the skin of the patient.
Dependencies are inferred from the claim text.