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US 12,109,010 B1Granted
Photoplethysmography sensors and processes
AssigneeHuxley Medical, Inc.
InventorsBrennan Torstrick, Mohsen Safaei Mohammadabadi
Life of this patent
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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.
Claims11
A patch comprising:
- a silicone-based adhesive layer defining a silicone-based adhesive layer opening and comprising a first side and a second side;
- an acrylic-based adhesive layer connected to the first side of the silicone-based adhesive layer, wherein the acrylic-based adhesive layer is exposed on the second side of the silicone-based adhesive layer through the silicone-based adhesive layer-before opening;
- a rigid support structure comprising:
- an enclosure for housing a compressible spacer;
- and
- a bottom surface area defining a rigid support structure opening for a photoplethysmography (PPG) sensor;
- and
- the PPG sensor comprising:
- a first side and a second side, the first side opposite the second side;
- and
- the compressible spacer located within the enclosure and comprising a top portion operatively connected to a top surface of the enclosure opposite the bottom surface area and a bottom portion operatively connected to the first side of the PPG sensor, wherein when the patch is attached to a patient's skin:
- the second side of the PPG sensor is in contact with the patient's skin;
- the compressible spacer is between the first side of the PPG sensor and the rigid support structure within the enclosure such that the top portion of the compressible spacer is connected to the top surface of the enclosure and opposite the bottom portion of the compressible spacer connected to the first side of the PPG sensor, thereby enabling movement of the PPG sensor when the second side of the PPG sensor is in contact with the patient's skin;
- the silicone-based adhesive layer attaches to a first portion of the patient's skin;
- and
- the acrylic-based adhesive layer attaches to a second portion of the patient's skin, the second portion of the patient's skin corresponding to at least a portion of the bottom surface area of the rigid support structure extending through the silicone-based adhesive layer opening.
13 more elements
Dependencies are inferred from the claim text.