User wearable fluorescence enabled visualization system

Patent metadata

Field	Value
Publication number	US-11733506-B2
Application number	US-202217722833-A
Country	US
Kind code	B2
Filing date	Apr 18, 2022
Priority date	Apr 21, 2020
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A user-wearable fluorescence based visualization system comprising a multi-light lamp assembly that provides for the selected output of light using multiple light emitting sources, wherein the outputted light may be tailored to generate response wavelength by the interaction of the emitted light and a tissue illuminated by the emitted light, through the process of fluorescence, and a viewing system that allows a practitioner view the fluorescent light generated by the tissue, and distinguish between healthy and diseased tissues.

First claim

The invention claimed is:

1. A user wearable device comprising:
a light assembly, said light assembly comprising:
a first light element configured to emit a first light at a first wavelength; and
a second light element configured to concurrently emit a second light at a second wavelength, wherein the first wavelength and said second wavelength are positioned at different end points of a same wavelength band;

an eyewear, said eyewear configured to:
view a reflected light, wherein said reflected light comprises:
a reflection of said emitted first light and said emitted second light and a light generated by an interaction of said emitted first light and emitted said second light with an object, said eyewear comprising:
a first lens; and
a second lens, each of said first lens and said second lens comprising:
a filtering system, wherein said filtering system is configured to:
 attenuate said reflected light below a known wavelength value, wherein said known wavelength is between said emitted first wavelength and said second wavelength; and
 allow passage of light wavelengths of said reflected light above said known wavelength value.

2. The user wearable device as recited in claim 1 , wherein each of said first lens and said second lens comprises:
a magnification device, said magnification device configured to:
magnify said second light by a known level of magnification, said magnification device comprising:
at least one filter associated with said magnification device, said at least one filter associated with said magnification device configured to:
attenuate said light wavelengths within said second light below said known wavelength value; and
allow passage of said light wavelengths within said second light above said known wavelength value.

3. The user wearable device as recited in claim 1 , wherein said first light element and said second light element are arranged about a central axis extending from said light assembly, wherein said first light and said second light are emitted toward a common point along said central axis.

4. The user wearable device as recited in claim 1 , wherein first light element comprises:
a first transmission filter, said first transmission filter configured to limit a wavelength range of said first light.

5. The user wearable device as recited in claim 4 , wherein said first transmission filter is one of: a low pass filter and a bandpass filter.

6. The user wearable device as recited in claim 5 , wherein an upper bound of said first transmission filter is selected to remove wavelengths from said first light having an intensity less than a maximum intensity of said second light.

7. The user wearable device as recited in claim 1 , comprising:
a third light element, said third light element configured to emit a white light, wherein said first light element, said second light element and said third light element are arranged concentrically about a central axis, wherein said first light element, said second light element and said third light element are arranged to project said first light, said second light and said third light toward a common point.

8. The user wearable device as recited in claim 1 wherein said first light is emitted in a lower range of a blue light wavelength range and said second light is emitted in an upper range of said blue light wavelength range.

9. The user wearable device as recited in claim 1 , wherein said light assembly is removably attachable to said eyewear.

10. The user wearable device as recited in claim 1 , comprising:
one of: a headstrap and a headband, wherein said light assembly is removably attachable to said one of: a headstrap and a headband.

11. The user wearable device as recited in claim 1 , wherein said second light element comprises:
a second transmission filter, said second transmission filter configured to limit a wavelength range of said second light.

12. The user wearable device as recited in claim 1 , wherein an intensity of said first light is greater than an intensity of said second light.

13. A user wearable device comprising:
an eyewear positioned on a user, said eyewear comprising:
a first lens; and
a second lens, each of said first lens and said second lens comprising:
a filtering system; and

a light assembly attached to a headband positioned on said user, said light assembly comprising:
a plurality of lighting elements arranged concentrically about a central axis extending from said light assembly and oriented to project a light generated by a corresponding one of said lighting elements to an object positioned along said central axis, wherein selected one of said plurality of lighting elements comprise:

a transmission filter, said transmission filter configured to limit a light wavelength range of said light projected by a corresponding one of said lighting elements, wherein said filter system is configured to:
attenuate light wavelengths within a second light below a known wavelength value, said second light comprising a reflection of said projected light and a fluorescent light generated by said object in response to being illuminated by said projected light; and
allow passage of light wavelengths within said second light above said known wavelength value, wherein said known wavelength is determined to allow on a portion of said projected light to pass.

14. The user wearable device as recited in claim 13 , wherein selected ones of said plurality of lights project light concurrently.

15. The user wearable device as recited in claim 14 , wherein said selected ones of said projected light is transmitted at different power levels.

16. The user wearable device as recited in claim 13 , comprising:
a source of electrical energy, said source configured to generate a voltage; and
an electrical circuitry comprising:
a switch control configured to:
generate an indication of a change in state of a remote switch; and

a switch, said switch configured to:
receive said indication of said change in state of said remote switch; and
control, in response to said received indication, an application of said voltage to at least one of said plurality of lighting elements.

17. The user wearable device as recited in claim 16 , wherein said remote switch is in communication with said electrical circuitry through a short-range communication protocol.

18. A user wearable device comprising:
an eyewear comprising:
a first lens; and
a second lens, each of said first lens and said second lens comprising:
a filter system; and

a light assembly, said light assembly comprising:
a plurality of lighting elements, each of said plurality of lighting elements comprising:
a lighting source configured to:
generate a substantially white light, wherein selected ones of said plurality of lighting elements comprise:

a transmission filter, said transmission filter configured to limit a light wavelength range of said light generated by a corresponding one of said light sources; and

an electronic circuitry comprising:
a receiving system configured to:
receive an indication of a change of state of a remote switch; and
control an application of a voltage to selected ones of said plurality of lighting elements to cause said selected ones of said plurality of lighting element to concurrently emit a light in respond to said received indication of said change of state, wherein said filter system is configured to:
attenuate light wavelengths within a second light below a known wavelength value, wherein said second light comprises wavelengths

Assignees

• Designs For Vision

Inventors

• Steier Liviu
• Feinbloom Richard E

Classifications

• F21Y2113/30

  of visible and non-visible spectrum · CPC title

• G02B25/02 Primary

  with means for illuminating object viewed · CPC title

• A61B5/0017

  transmitting optical signals · CPC title

• A61B5/0077

  Devices for viewing the surface of the body, e.g. camera, magnifying lens · CPC title

• A61B5/7225

  Details of analogue processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation (input circuits for detecting, measuring, or recording bioelectric or biomagnetic signals A61B5/30; specific diagnostic methods using bioelectric or biomagnetic signals A61B5/316) · CPC title