Method for determining the operating state of a light-emitting implant

Patent metadata

Field	Value
Publication number	US-12498266-B2
Application number	US-202318476487-A
Country	US
Kind code	B2
Filing date	Sep 28, 2023
Priority date	Sep 29, 2022
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

A method for determining the operating state of a light-emitting implant implanted in the brain of a living being, the light-emitting implant including a light source responsible for emitting light into the brain of the living being, the method using a diagnosing device that includes a receiver of a light signal transmitted through a first eye of the living being and a device for determining the operating state of the light-emitting implant based on the received transmitted light signal.

First claim

The invention claimed is:

1 . A method for determining an operating state of a light-emitting implant implanted in a brain of a living being, said light-emitting implant comprising a light source configured to emit light into the brain of the living being, said method using a diagnosing device that comprises a receiver configured to receive a portion of the light that is transmitted through a first eye of the living being and processing circuitry configured to determine the operating state of the light-emitting implant based on the received transmitted light, the method comprising:
positioning the receiver of the diagnosing device facing a first eye of the living being, the receiver being configured to receive the light emitted into the brain and transmitted through and exiting the first eye of the living being, measuring a light signal based on the portion of the light received by the receiver via the first eve when the light-emitting implant is activated, comparing data representative of the measured light signal and a reference datum, and determining, by the processing circuitry, the operating state of the light-emitting implant between a functional state and a non-functional state based on a result of the comparing step.

2 . The method according to claim 1 , wherein said reference datum is stored beforehand or acquired in a step of calibrating the diagnosing device.

3 . The method according to claim 2 , further comprising calibrating the diagnostic device to obtain the reference datum, the calibrating step including measuring a reference light signal, which is performed when the light-emitting implant is deactivated.

4 . The method according to claim 1 , wherein the step of determining the operating state of the light-emitting implant includes determining at least one difference between said reference datum and a datum of said data representative of the received light signal, and comparing said difference with a predetermined threshold value.

5 . The method according to claim 1 , wherein the method further comprises positioning a point light source facing a second eye of the living being and activating said point light source.

6 . The diagnosing device used to implement the method defined in claim 1 , wherein the diagnosing device comprises;
a mechanical mount to which said receiver is fastened, and the processing circuitry configured to determine the operating state of said light-emitting implant, the processing circuitry being connected to said receiver and configured to process data delivered by said receiver.

7 . The diagnosing device according to claim 6 , wherein the receiver is a camera.

8 . The diagnosing device according to claim 6 , wherein the receiver comprises one or more photodiodes.

9 . The diagnosing device according to claim 6 , further comprising a point light source fastened to said mount and arranged facing a second eye of the living being, in parallel with the receiver.

10 . The diagnosing device according to claim 6 , wherein the mechanical mount comprises an optical platform to which said receiver is fastened.

11 . The diagnosing device according to claim 6 , wherein the mechanical mount comprises a headset to be placed around the head of the living being.

12 . The diagnosing device according to claim 11 , wherein the headset comprises two eyeglasses, a first eyeglass accommodating said receiver and a second eyeglass accommodating a point light source.

Assignees

• Commissariat Energie Atomique
• Centre Hospitalier Univ Grenoble Alpes
• Univ Grenoble Alpes

Inventors

• Bleuet Pierre
• Chabrol Claude
• Moro Cécile
• Chabardes Stephan
• Benabid Alim Louis

Classifications

• G01J2001/446

  Photodiode · CPC title

• G01J2001/444

  Compensating; Calibrating, e.g. dark current, temperature drift, noise reduction or baseline correction; Adjusting · CPC title

• G01J2001/4247

  for testing lamps or other light sources · CPC title

• A61N5/0601

  Apparatus for use inside the body · CPC title

• A61B5/0059

  using light, e.g. diagnosis by transillumination, diascopy, fluorescence (photoacoustic A61B5/0093; optical measurement of heart rate A61B5/02416; optical measurement of blood flow A61B5/0261; optical measurement of analytes A61B5/1455) · CPC title