US 2025/0082260 A1Published application

Tissue characterization

AssigneeWhoop, Inc.

InventorsMostafa Ghannad-Rezaie, Behnoosh Tavakoli, Eric Alexander Otte

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Abstract

The thickness of a tissue layer is calculated using optical measurements from a wearable physiological monitor. In general, a model—e.g., an analytical, empirical, or statistical model—can be created that interrelates distance from a light source (directed into the skin from the surface), light intensity, and tissue thickness. With this model, a suitable light source can be directed into skin, and measurements of light intensity at various distances along the surface of the skin from the light source can be used to calculate thickness of a tissue layer in a multi-layer structure such as the dermis over layers of fat, muscle, bone, and the like. Changes in dermal thickness can be tracked over time, and used to assess a user's health or fitness. The thickness can also support an evaluation of other characteristics such as dermis elasticity, e.g., tracking over time and correlating to health, hydration, and so forth.

Claims27

Dependent claims

A computer program product for characterizing dermis thickness, the computer program product comprising non-transitory computer executable code embodied in a non-transitory computer readable medium that, when executing on one or more computing devices, causes the one or more computing devices to perform the steps of:

storing a model that associates a ratio of at least two light intensity measurements with a thickness of a dermal layer in a multi-layer human tissue, wherein:
each of the at least two light intensity measurements is obtained at one or more predetermined wavelengths,
each of the at least two light intensity measurements is obtained from a surface of the multi-layer human tissue, and
at least two of the at least two light intensity measurements are obtained at different predetermined distances along the surface of the multi-layer human tissue from a light source directed into the dermal layer;
with a wearable physiological monitor, emitting light at the one or more predetermined wavelengths toward the skin of a user;
measuring a first intensity of light at the one or more predetermined wavelengths with a first sensor;
measuring a second intensity of light at the one or more predetermined wavelengths with a second sensor;
and
determining a dermal thickness of a dermal layer of the user by applying the first intensity and the second intensity to the model.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/885,120Filed 13 Sep 2024
Priority: 13 Sep 2023
Published: 13 Mar 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

A61B 5/1075
Measuring physical dimensions, e.g. size of the entire body or parts thereof: for measuring dimensions by non-invasive methods, e.g. for…
A61B 5/442
Skin evaluation, e.g. for skin disorder diagnosis: evaluating skin mechanical properties, e.g. elasticity, hardness, texture, wrinkle assessment
A61B 5/0048
Measuring for diagnostic purposes ; Identification of persons: detecting, measuring or recording by applying mechanical forces or stimuli
A61B 5/0064
Arrangements for scanning: body surface scanning

Family

Application63/582,414Us provisional application · filed 13 Sep 2023
US 2025/0082260 A1This patent

From the US filing history. Foreign family members aren’t listed.

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