U.S. patent application number 17/199499 was filed with the patent office on 2021-07-01 for light therapy for eyelash growth.
The applicant listed for this patent is Alcon Inc.. Invention is credited to Brian S. Kelleher.
Application Number | 20210196978 17/199499 |
Document ID | / |
Family ID | 1000005451328 |
Filed Date | 2021-07-01 |
United States Patent
Application |
20210196978 |
Kind Code |
A1 |
Kelleher; Brian S. |
July 1, 2021 |
LIGHT THERAPY FOR EYELASH GROWTH
Abstract
Systems, methods, and devices for promoting eyelash hair growth
includes an energy transducer, positionable proximate the eyelid,
configured to provide light energy to a user's eyelids at an output
wavelength suitable for stimulating eyelash hair growth, and a
scleral shield, positionable inside of the eyelid, to protect the
eye from the light energy. The device may be powered by an internal
power source, such as a rechargeable battery or disposable
batteries, or by an external power source, such as a plug used in
connection with an AC outlet. In use, the eyelid is positioned
between the energy transducer and the scleral shield, and the light
energy from the energy transducer is applied to the eyelash region
of the eyelid to promote eyelash hair growth.
Inventors: |
Kelleher; Brian S.; (San
Diego, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Alcon Inc. |
Fribourg |
|
CH |
|
|
Family ID: |
1000005451328 |
Appl. No.: |
17/199499 |
Filed: |
March 12, 2021 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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15198617 |
Jun 30, 2016 |
10974063 |
|
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17199499 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61N 2005/067 20130101;
A61N 2005/0654 20130101; A61N 2005/0651 20130101; A61N 2005/0662
20130101; A61N 2005/0644 20130101; A61N 2005/0659 20130101; A61F
9/0079 20130101; A61F 9/00772 20130101; A61N 5/0617 20130101; A61N
5/0624 20130101 |
International
Class: |
A61N 5/06 20060101
A61N005/06; A61F 9/007 20060101 A61F009/007 |
Claims
1. A light therapy device for stimulating and/or promoting eyelash
growth, comprising: an energy transducer configured to provide
light energy at one or more wavelengths to an eyelash region of an
eyelid; and a scleral shield configured to block light energy
toward the eyeball; wherein when the eyelid is positioned between
the energy transducer and the scleral shield, the energy transducer
provides light energy at a first wavelength to the eyelash region
suitable for stimulating and/or promoting eyelash hair growth, and
the scleral shield blocks and/or protects the eyeball from the
light energy.
2. The device of claim 1 wherein the first wavelength for eyelash
hair growth is within a wavelength range of 450 nm-700 nm.
3. The device of claim 1, wherein the energy transducer is further
configured to provide light energy at a second wavelength to treat
bacteria on the eyelid.
4. The device of claim 3 wherein the second wavelength is within a
wavelength range of 400 nm-450 nm.
5. The device of claim 1, wherein the energy transducer is further
configured to provide light energy at a third wavelength to heat
the eyelid and soften or melt meibum within meibomian glands.
6. The device of claim 5 wherein the third wavelength is within a
wavelength range of 700 nm-1000 nm.
7. The device of claim 1, wherein the scleral shield is made of, or
coated with, a light energy blocking material.
8. The device of claim 1, wherein the energy transducer comprises
at least one of an LED, laser, incandescent lamp, xenon lamp,
halogen lamp, luminescent lamp, high-intensity discharge lamp, and
gas discharge lamp.
9. The device of claim 1, further comprising one or more components
selected from the group consisting of: a display or dashboard
configured to display the device status, a battery configured to
power the device components, battery charging means, and a
controller.
10. A handheld light therapy device for stimulating and/or
promoting eyelash growth, comprising: a housing; an energy
transducer module positioned at a distal end of the housing, the
energy transducer module being configured to provide light energy
at one or more wavelengths suitable for stimulating and/or
promoting eyelash hair growth to an eyelash region of an eyelid; a
power source module positioned within the housing, the power source
module being coupled to the energy transducer module; a controller
coupled to the power source module; a user interface device coupled
to the controller, the user interface device being configured to
provide user input to the controller to instruct the power source
module to deliver energy to or from the energy transducer module;
and a scleral shield configured to block light energy toward the
eyeball being made of, or coated with, a light energy blocking
material, the scleral shield being positioned between the energy
transducer and the eyeball; wherein when the eyelash region is
positioned in a gap between the energy transducer and the scleral
shield, the energy transducer is instructed to provide light energy
at a first wavelength to the eyelash region, and the scleral shield
blocks and/or protects the eyeball from the light energy.
11. The device of claim 10 wherein the first wavelength for eyelash
hair growth is within a wavelength range of 450 nm-700 nm.
12. The device of claim 10, wherein the energy transducer is
further configured to provide light energy at a second wavelength
to treat bacteria on the eyelid.
13. The device of claim 10, wherein the energy transducer is
further configured to provide light energy at a third wavelength to
heat the eyelid and soften or melt meibum within meibomian
glands.
14. The device of claim 10, wherein interface device is selected
from the group consisting of: a button, switch, touch screen, voice
commands, another module or device and a smartphone.
15. The device of claim 10, wherein the energy transducer comprises
at least one of an LED, laser, incandescent lamp, xenon lamp,
halogen lamp, luminescent lamp, high-intensity discharge lamp, and
gas discharge lamp.
16. The device of claim 10, further comprising a safety feature
electrically coupled to the energy transducer prevents or
interrupts the light energy from occurring if the scleral shield is
not in position to protect the eyeball.
Description
RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 15/198,617 filed Jun. 30, 2016. This
application is related to U.S. patent application Ser. No.
14/265,228 filed Apr. 29, 2014 and entitled "Systems and Methods
for the Treatment of Eye Conditions", which claims the benefit of
U.S. Provisional Application No. 61/817,757, filed Apr. 30, 2013,
which are incorporated herein by reference, and U.S. patent
application Ser. No. 14/529,102 and entitled "Systems and Methods
for the Treatment of Eye Conditions", which is also incorporated
herein by reference.
BACKGROUND
[0002] The present disclosure relates to medical devices and
methods of using the same. More particularly, the disclosure
relates to systems, methods, and apparatus used to treat eyelashes
and surrounding tissue.
[0003] Eyelashes grow at the edge of the eyelid and help filter out
foreign matter, including dust and debris, and prevent the foreign
matter from getting into the eye. An eyelash is sensitive to being
touched, thus providing a warning that an object may be too close
to the eye. Many people lose their eyelashes, a condition called
madarosis. There are numerous conditions that can result in eyelash
loss, including ophthalmological conditions, such as blepharitis,
dermatologic conditions, Nutritional defects, Infections, Trauma,
Drugs/Medications, Genetics, and other diseases.
[0004] A blepharitis attack of eyelids repeatedly can cause eyelash
loss. R causes swelling and itching on the eyelid due to excessive
bacteria growth in tiny oil glands. Antibiotics are typically used
to combat the bacterial infection. Blepharitis can include anterior
blepharitis or posterior blepharitis. Anterior blepharitis is
usually either staphylococcal or seborrhoeic, and posterior
blepharitis refers to any of the varieties of meibomian gland
dysfunction. The symptoms of anterior blepharitis include itching,
burning, foreign body sensation, photophobia, and tearing.
Posterior blepharitis is also known as meibomian gland dysfunction
and is characterized by either excessive foam in the tear film in
the hypersecretory type, or plugging of the meibomian orifices in
the obstructive type. Expression of the secretions reveals a turbid
or toothpaste-like material. If there is spillover inflammation of
the anterior lid margin, there may be a loss of eyelashes.
[0005] A need exists for improved methods and devices to diagnose
and treat eyelash loss.
SUMMARY
[0006] Embodiments described herein may meet one or more of the
needs identified above and may overcome one or more of the
shortcomings of current eyelash treatment methods. Various
implementations of systems, methods, and devices within the scope
of the appended claims each have several aspects, no single one of
which is solely responsible for the desirable attributes described
herein. Without limiting the scope of the appended claims, some
prominent features are described herein.
[0007] The present application relates generally to treatment
systems, methods, and devices used to treat eyelids, in particular,
the eyelid margin where the eyelashes grow. Details of one or more
implementations of the subject matter described in this
specification are set forth in the accompanying drawings and the
description below. Other features, embodiments, and advantages will
become apparent from the description, the drawings, and the
claims.
[0008] One aspect of this disclosure provides a device for
stimulating and/or promoting eyelash growth. In various
embodiments, the device includes an energy transducer configured to
provide light energy at one or more wavelengths and a scleral
shield. When the eyelid is positioned between the energy transducer
and the scleral shield, the light energy from the energy transducer
is directed to the eyelid margin to provide light energy at an
output wavelength suitable for stimulating and/or promote eyelash
hair growth.
[0009] An additional aspect of the disclosure provides a method for
promoting eyelash growth. The method includes positioning an energy
transducer proximate an eyelash region of the eyelid, the energy
transducer configured to provide light energy at one or more
wavelengths, and positioning a scleral shield between the energy
transducer and eyeball, the scleral shield being made of, or coated
with, a light energy blocking material. The method also includes
directing light energy from the energy transducer toward the
eyelash region at a first wavelength suitable for stimulating
and/or promoting eyelash hair growth; and blocking any light energy
directed toward the eyeball with the scleral shield to protect the
eyeball from the light energy.
[0010] In some embodiments, the energy transducer is further
configured to provide light energy at a second wavelength selected
to treat bacteria. In some embodiments, the energy transducer is
further configured to provide light energy at a third wavelength
selected to be absorbed by the eyelid tissue, and thereby heat the
eyelid tissue. The first wavelength may be in the range of about
(without limitation) 450-700 nm, the second wavelength may be in
the range of about (without limitation) 400-450 nm and the third
wavelength may be in the range of about (without limitation)
700-1000 nm.
[0011] In some embodiments, the energy transducer may include at
least one of an LED, laser, incandescent lamp, xenon lamp, halogen
lamp, luminescent lamp, high-intensity discharge lamp, and gas
discharge lamp.
[0012] Some embodiments of the device further include one or more
components selected from the group consisting of: a display or
dashboard configured to display the device status; a battery
configured to power the device components; battery charging means;
a controller; printed circuit board; and communication circuitry
between scleral shield and energy transducer.
[0013] Some embodiments of the device further include a safety
feature electrically coupled to the energy transducer configured to
prevent or interrupt the light energy from the energy transducer if
the if the scleral shield and associated assembly are not properly
attached to, and aligned with, the device.
[0014] Additionally, or alternatively, some embodiments of the
device further include a timer operatively coupled to the energy
transducer and configured to shut off the energy transducer after a
predetermined time.
[0015] Other features and advantages should be apparent from the
following description of various implementations, which illustrate,
by way of example, the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above-mentioned aspects, as well as other features,
aspects, and advantages of the present technology will now be
described in connection with various embodiments, with reference to
the accompanying drawings. The illustrated embodiments, however,
are merely examples and are not intended to be limiting. Throughout
the drawings, similar symbols typically identify similar
components, unless context dictates otherwise. Note that the
relative dimensions of the following figures may not be drawn to
scale.
[0017] FIG. 1 is a cross-sectional diagram of a mammalian eye
system 10.
[0018] FIG. 2A is a schematic block diagram of one embodiment of an
eyelash treatment device according to some embodiments.
[0019] FIG. 2B is a schematic block diagram of another embodiment
of an eyelash treatment device having a scleral shield.
[0020] FIG. 2C is a schematic block diagram of another embodiment
of an eyelash treatment device having attached scleral shields.
[0021] FIG. 3A is a schematic side plan view of another embodiment
of an eyelash treatment device having a scleral shield.
[0022] FIG. 3B is a schematic block diagram of an embodiment of an
eye diagnostic and treatment device having attached scleral
shields.
[0023] FIG. 4 is a schematic side plan view of another embodiment
of an eyelash treatment device.
[0024] FIG. 5 is a schematic side plan view of another embodiment
of an eyelash treatment device, which includes an eyelash treatment
device and a scleral shield.
[0025] FIG. 6 is a schematic side plan view of another embodiment
of an eye treatment system, which includes an eyelash treatment
device and a scleral shield.
[0026] FIG. 7 is a flow chart showing one embodiment of a method
for promoting eyelash growth using light energy.
DETAILED DESCRIPTION
[0027] In the following detailed description, reference is made to
the accompanying drawings, which form a part of the present
disclosure. In the drawings, similar symbols typically identify
similar components, unless context dictates otherwise. The
illustrative embodiments described in the detailed description,
drawings, and claims are not meant to be limiting. Other
embodiments may be utilized, and other changes may be made, without
departing from the spirit or scope of the subject matter presented
herein. It will be readily understood that the aspects of the
present disclosure, as generally described herein, and illustrated
in the Figures, can be arranged, substituted, combined, and
designed in a wide variety of different configurations, all of
which are explicitly contemplated and form part of this
disclosure.
[0028] The terminology used herein is for the purpose of describing
particular embodiments only and is not intended to be limiting of
the disclosure. It will be understood by those within the art that
if a specific number of a claim element is intended, such intent
will be explicitly recited in the claim, and in the absence of such
recitation, no such intent is present. For example, as used herein,
the singular forms "a", "an" and "the" are intended to include the
plural forms as well, unless the context clearly indicates
otherwise. As used herein, the term "and/or" includes any and all
combinations of one or more of the associated listed items. It will
be further understood that the terms "comprises," "comprising,"
"have," "having," "includes," and "including," when used in this
specification, specify the presence of stated features, integers,
steps, operations, elements, and/or components, but do not preclude
the presence or addition of one or more other features, integers,
steps, operations, elements, components, and/or groups thereof.
Expressions such as "at least one of," when preceding a list of
elements, modify the entire list of elements and do not modify the
individual elements of the list.
[0029] To assist in the description of the devices and methods
described herein, some relational and directional terms are used.
"Connected" and "coupled," and variations thereof, as used herein
include direct connections, such as being contiguously formed with,
or glued, or otherwise attached directly to, on, within, etc.
another element, as well as indirect connections where one or more
elements are disposed between the connected elements. "Connected"
and "coupled" may refer to a permanent or non-permanent (i.e.,
removable) connection.
[0030] "Secured" and variations thereof as used herein include
methods by which an element is directly secured to another element,
such as being glued, screwed, or otherwise fastened directly to,
on, within, etc. another element, as well as indirect means of
securing two elements together where one or more elements are
disposed between the secured elements.
[0031] "Proximal" and "distal" are relational terms used herein to
describe position from the perspective of a medical professional
treating a patient. For example, as compared to "distal," the term
"proximal" refers to a position that is located more closely to the
medical professional, while the distal end is located more closely
to the patient during treatment. For example, the distal ends of
the devices disclosed herein oppose the proximal ends of the same
devices, and the distal end of a device often includes, for
example, the end configured for placement against the eyelid of a
patient.
[0032] "Transducer" is a term used herein to describe an element
which receives one form of energy and transforms it into another.
For example, a light source may receive electrical energy and
produce light energy. Likewise, an ultrasonic transducer may
receive electrical energy and produce ultrasonic energy.
[0033] "Light" as used herein refers not only to energy in the
visible light spectrum, but also to energy in the infrared and
ultraviolet portions of the electromagnetic energy spectrum.
[0034] "Waveguide" as used herein refers to any means of
influencing the propagation, distribution or trajectory of
electromagnetic energy such as light, ultrasonic energy and radio
frequency energy. As defined herein, optical elements such as
diffractors, refractors, diffusers and the like are included in
this broad definition of a waveguide.
[0035] "Optical path length" is used herein to describe the length
of the path (for example, within a tissue section) through which
energy travels.
[0036] Embodiments disclosed herein relate to ophthalmic devices,
systems, and methods. The devices, systems, and methods disclosed
herein can be used to for stimulating and/or promoting eyelash
growth. FIG. 1 is a cross-sectional diagram of a mammalian eye
system 10, which includes an eyeball 20 and surrounding eyelid
anatomy. As recited within this disclosure and as identified in
FIG. 1, the "central ocular axis" 30 of the eye is the central axis
running through the center of the cornea 22, iris 24, pupil 25,
lens 26, and vitreous body 28 of the eyeball 20. Eye system 10
includes an upper eyelid 12, a lower eyelid 14, and eyelashes 16.
Within the tissue of each eyelid 12, 14, there are meibomian glands
18 each having a duct or orifice 19. In healthy eye systems 10, the
meibomian glands 18 secrete out of ducts 19 a substance called
meibum, comprised primarily of lipids and proteins. The meibum
forms part of the tear film that covers the surface of the eyeball
20.
[0037] FIG. 2A is a schematic block diagram of an example eyelash
treatment device 100 according to various embodiments. As shown in
FIG. 2A, the depicted device 100 includes a power source module
110, an energy transducer module 120, and an optional energy
waveguide module 130, which may be functionally and/or physically
connected to one another. In some embodiments, the energy
transducer module 120 and energy waveguide module 130 may be
combined in a single unit, such as within a single housing for
example.
[0038] The power source module 110 of various embodiments provides
energy to the energy transducer module 120. The power source module
110 may include any structure configured for delivering power to
one or more other components of the eyelash treatment device 100.
In some embodiments, the power source module 110 includes a
disposable battery, a rechargeable battery, a solar cell, a power
transforming module such as a power supply or power converter, or a
power transfer mechanism such as a cord, outlet, or plug configured
to receive alternating current or direct current from an external
source.
[0039] The energy transducer module 120 may include one or more
energy transducers configured to emit one or more forms or type of
energy. For example, as described in more detail below, in some
embodiments, the energy transducers emit photonic, acoustic, radio
frequency, electrical, magnetic, electro-magnetic, vibrational,
infrared or ultrasonic energy. In some embodiments, the transducer
module 120 generates multiple types of energy simultaneously or in
a predetermined order.
[0040] FIGS. 2B and 2C show the eyelash treatment device 100 with
optional energy waveguide module 130 that includes one or more
structures configured to control or focus the direction of energy
emission from the energy transducers and a scleral shield 300 made
of light energy blocking material or have a light energy blocking
surface on a front face 302 to block light energy from entering the
eyeball during treatment. The waveguide module 130 may include one
or more reflectors, refractors, diffractors, or diffusers
(described in more detail below) configured to focus photonic
energy toward a desired region, or other structures for configuring
and directing the energy emission, such as ultrasonic horns or
fiber optics.
[0041] In some embodiments, the transducer module 120 may generate
multiple types of energy simultaneously, such as photonic,
acoustic, radio frequency, electrical, magnetic, electro-magnetic,
vibrational, infrared or ultrasonic energy. For example, a first
energy may treat the eyelash at the eyelid margin while a second
energy may treat for bacteria on the eyelid.
[0042] The embodiment shown in FIG. 2C is similar to the embodiment
shown in FIG. 2B except there are two scleral shields 300. The
eyelid is placed within the scleral shields 300 during eyelash
treatment.
[0043] The eyelash treatment device 200 of FIGS. 3A and 3B may
include any or all of the features described in relation to other
embodiments presented herein. For example, in the depicted
embodiment, the energy transducer module 120 is an infrared LED
array. However, in other embodiments, including other embodiments
configured to apply energy to one eyelid at a time, the energy
transducer module 120 may include an LED emitting light in the
visible light spectrum, a laser, an incandescent lamp, a xenon
lamp, a halogen lamp, a luminescent lamp, a high-intensity
discharge lamp, or a gas discharge lamp. The eyelash treatment
device 200 may further include a scleral shield 300 made of light
energy blocking material or have a light energy blocking surface on
a front face 302 to block light energy from entering the eyeball
during treatment. The scleral shield 300 may also incorporate one
or more temperature sensors. The eyelash treatment device 200 of
FIGS. 3A and 3B may also include a power source module 110 and
optionally a controller 212, along with other components as
described in relation to various embodiments presented herein.
Additionally, the eyelash treatment device 200 includes a reflector
210. In the depicted embodiment, the reflector 210 is formed of a
barrel and backplate, which together surround the energy transducer
module 120 in all but a distal direction.
[0044] In certain embodiments having a controller 212, the
controller 212 can receive input instructions from a user (for
example, through a user interface device, such as a button, switch,
touch screen, voice commands, from another module or device, such
as a smartphone) to emit light from the energy transducer module
120. Upon receipt of the user input instructions, the controller
212 can instruct the power source module 110 to deliver energy to
or from the energy transducer module 120.
[0045] The energy transducer module 120 can be configured to emit
light of the appropriate wavelength necessary for the desired
treatment. The treatments may include one or more of the following:
promoting eyelash growth by the illuminating the eyelid margins,
antibacterial treatment to kill bacteria in the eye system 10, and
heating the meibomian gland of eyelids 12, 14. Note that the
descriptions of the various devices herein (including the eyelash
treatment device 200) are exemplary, and not limiting. Thus, for
example, while this detailed description mentions particular
elements and circuitry having particular functions, this does not
limit the disclosure to those particular embodiments. For example,
while LEDs are mentioned, other light sources, such as
incandescent, xenon, halogen, high-intensity discharge, cold
cathode tube, fluorescent, laser and other light sources or energy
sources can be used.
[0046] For some embodiments, it is desirable to use light with a
wavelength selected to: a) stimulate and/or promote eyelash growth
at the eyelash region of an eyelid, b) reduce or minimize the
amount of light that penetrates beyond the eyelash region, and c)
reduce or minimize the amount of heating that occurs at the surface
of the eyelid. For example, in some embodiments, the energy
transducer 120 can emit light having a wavelength in the range of
about 450-700 nm. Furthermore, emitting wavelengths within this
portion of the light spectrum avoids the undesired portion of the
electromagnetic spectrum for embodiments that do not incorporate a
scleral shield, including ultraviolet, infrared, and blue.
[0047] In some embodiments, the energy transducer is further
configured to provide light energy at a second wavelength selected
to treat bacteria. In some embodiments, the energy transducer is
further configured to provide light energy at a third wavelength
selected to be absorbed by the eyelid tissue, and thereby heat the
eyelid tissue. The first wavelength may be in the range of about
(without limitation) 450-700 nm, the second wavelength may be in
the range of about 400-450 nm and the third wavelength may be in
the range of about 700-1000 nm.
[0048] While a controller 212 and energy transducer 120 are
mentioned, it will be understood that the controller could be
integrated with driver circuitry for the light source or circuitry
for a solid-state or other power supply, or other configurations
could be used to provide the desired result. Further, some or all
of the functions described as being handled by, or controlled by,
controller 212, may be implemented using discrete logic or analog
circuitry, or a combination thereof.
[0049] Moreover, although the various embodiments such as device
200 are illustrated schematically, they can be produced in a
variety of handheld or stationary configurations with a housing
with optional gripping surfaces, manipulation and control
structures, and the like.
[0050] In one embodiment, a handheld light therapy device 200
includes a housing 202, an energy transducer module 120 positioned
at a distal end of the housing, a power source module coupled to
the energy transducer module, a controller 212 coupled to the power
source module, and a user interface controller coupled to the
controller configured to provide user input to the controller to
instruct the power source module to deliver energy to or from the
energy transducer module. Examples of a user interface include a
button, switch, touch screen or voice commands. The user interface
may be incorporated into the device, it may be located on another
module or device in communication with the handheld light therapy
device 200, such as a smartphone that wirelessly communicates with
the controller.
[0051] The handheld light therapy device 200 further includes a
scleral shield 300 configured to block light energy toward the
eyeball, the scleral shield being positioned between the energy
transducer and the eyeball. In use, the eyelash region is
positioned in a gap between the energy transducer and the scleral
shield and the energy transducer is instructed to provide light
energy 211 at a first wavelength to the eyelash region, and the
scleral shield blocks and/or protects the eyeball from the light
energy.
[0052] It is desirable to use light with a wavelength selected to
stimulate and/or promote eyelash growth at the eyelash region of an
eyelid. For example, in some embodiments, the energy transducer 120
can emit light having a wavelength in the range of about 450-700
nm. In some embodiments, the energy transducer is further
configured to provide light energy at a second wavelength selected
to treat bacteria, for example in the range of about 400-450 nm. In
some embodiments, the energy transducer is further configured to
provide light energy at a third wavelength selected to be absorbed
by the eyelid tissue, and thereby heat the eyelid tissue, for
example, in the range of about 700-1000 nm.
[0053] In some embodiments, the handheld light therapy device 200
may include a display or dashboard configured to display the device
status. The display or dashboard may be on the device, such as on
the housing, or the display or dashboard may be on a separate
device, such as another module or device, or a smartphone in
wireless communication. The handheld light therapy device 200 may
also use a power cord or a battery configured to power the device
components and battery charging means.
[0054] The handheld light therapy device 200 may also include a
safety feature electrically coupled to the energy transducer
prevents or interrupts the light energy from occurring if the
scleral shield is not in position to protect the eyeball. In some
embodiments, the safety feature may include sensors to make sure
that a protective scleral shield 300 is in the correct position
prior to turning on an energy transducer module 120, thus
preventing damage to the eye system 10, sensors for preventing
undesired activation of the device, sensors monitoring the delivery
of energy to the patient, or sensors for preventing overheating of
the skin. In some embodiments, the safety feature may include
safety warning apparatus to let the patient know of an unsafe
condition, and can include a flashing light, a flashing warning, a
sound warning beep, a picture, a vibration pattern, or words
indicative of the potential for or existence of an unsafe
condition.
[0055] The devices described herein can be designed for use in a
plurality of settings, including in-home use and use within an eye
care professional's office, a health clinic, or other healthcare
facility.
[0056] The eyelash treatment device 200 of various embodiments may
also include one or more thermal management structures configured
to cool at least a portion of the device. In some embodiments, the
thermal management structures are provided to manage the heat of
the energy transducer module 120 and prevent the device 200 from
overheating. Additionally, or alternatively, in some embodiments,
the thermal management structures are provided to cool a surface of
the eyelid to limit discomfort and avoid injury to the eyelid
tissue during treatment. In FIG. 3A, for example, the eyelash
treatment device 200 includes a thermal management structure 220
(shown as a finned heat sink), a thermoelectric (Peltier) module
224, and one or more thermally conductive surfaces that are
passively or actively cooled. In some embodiments, a passive heat
sink may be provided as an adequate thermal management structure
220 to dissipate heat from the energy transducer module 120 into
the surrounding environment without the need for a thermoelectric
module 224. Some embodiments include a thermoelectric module 224 or
other type of cooler (such as a compact vapor-compression cooler)
designed to cool the energy transducer module 120 by transferring
heat directionally away from the energy transmission surface 140.
In FIG. 3A, the thermoelectric module 224 and thermal management
structure 220 are coupled such that the thermoelectric module 224
pumps heat away from the energy transducer module 120 towards
thermal management structure 220 for dissipation.
[0057] The embodiment of FIG. 3B is similar to the embodiment of
FIG. 3A except there are two scleral shields 300. The eyelid is
placed within the scleral shields 300 during eyelash treatment.
[0058] FIG. 4 is a schematic side plan view of another embodiment
of an eyelash treatment device. The eyelash treatment device 200
shown in FIG. 4 is positioned adjacent to an eyeball 20 to
stimulate and/or promote eyelash growth at the eyelash region 12a,
14a. For simplicity, sensitive eye structures such as the cornea,
iris, pupil lens, and adjacent elements are depicted as a single
element called anterior eye structures 27. The eyelash treatment
device 200 may include any or all of the features described in
relation to other embodiments presented herein, along with
additional components useful in operation of the eyelash treatment
device 200. The eyelash treatment device 200 can include a power
source module 110, a controller 212, an energy transducer module
120, an energy waveguide in the form of reflector 210, and an
energy transmission surface 140. Each of these components, either
alone, or in combination with other components (either shown herein
or not disclosed) can correspond or be part of the modules
described in relation to FIGS. 2A-2C and 3A-3B. The components of
the eyelash treatment device 200 can be contained in a housing 202.
While not shown in the figures, some of the embodiments of the
treatment device 200 may also include a consumable portion and/or a
scleral shield 300.
[0059] The energy transducer module 120 can include a lens 208 that
can be used in conjunction with the LED emitter 207 or other
electromagnetic energy source to direct the energy to the eyelid at
a desired angle or in a desired pattern, at a desired
intensity.
[0060] The energy transmission surface 140 may be configured to
direct energy generated by the energy transducer module 120 toward
a desired region. The energy transmission surface 140 may include
one or more lenses configured to focus energy generated by the
transducer module 120. The energy transmission surface 140 may
contact the surface of the eyelid 12, 14. In some embodiments, at
least a portion of energy transmission surface 140 may be
configured as a single-use cover element.
[0061] FIG. 5 shows a schematic side plan view of another
embodiment of an eyelash treatment device 200. The embodiment of
the eyelash treatment device 200 may contain components similar to
those shown in FIG. 4, including the power source module 110 and
the controller 212, though such components are not shown in FIG. 5.
FIG. 5 provides a different configuration for the energy transducer
module 120 in order to focus and control the direction of the light
beams 211. In some embodiments, the eyelash treatment device 200
can include multiple energy transducer modules 120. Having separate
energy transducer modules 120a, 120b positioned separately in the
eyelash treatment device 200 reduces the amount of light that may
be directed towards sensitive anterior eye structures 27 along the
central ocular axis 30.
[0062] As depicted in FIG. 5, the upper and lower energy transducer
modules 120 can be tilted at an angle, each having a central
optical axis directed substantially at an oblique angle to the
surface of each eyelid. In some embodiments, the upper and lower
energy transducer modules 120 can have other directional
orientations. For example, in some embodiments, the upper and lower
energy transducer modules 120 can be positioned such that each
central optical axis of the illumination sources is substantially
horizontal. As such, the light beams 211 transmitted from the
energy transducer modules 120 configured in this way can travel
horizontally from the energy transducer modules 120 to the energy
transmission surface 140 and may then be refracted, diffracted, or
reflected at an angle toward the treatment tissue, in a manner that
minimizing the proportion of light that reaches the sensitive
anterior eye structures 27.
[0063] FIG. 6 is a schematic side plan view of an eyelash treatment
device 200, similar to the eyelash treatment device 200 depicted in
FIG. 5. Also shown in FIG. 6 is a scleral shield 300, which, in
conjunction with the eyelash treatment device 200, can provide a
system of treating the target tissue with increased safety and
efficacy. The scleral shield 300 can be positioned under eyelids
12, 14 and adjacent to the patient's eyeball 20 to cover sensitive
anterior eye structures 27. For example, the scleral shield may be
positioned (referring to FIG. 1) over the sclera 21 and cornea 22
and may also provide protection to other internal anatomy of the
eye such as the iris 24, pupil 25, lens 25, and other light
sensitive anatomy of the eye system 10.
[0064] Referring back to FIG. 6, the scleral shield 300 may be of
similar disc shape as a contact lens, or it may be substantially
larger to cover the entire cornea and optionally at least some of
the sclera (as in the case of a conventional corneal shield), or it
may have a partial disc or paddle shape, similar to the under-lid
portion of a Mastrota paddle. Shield 300 may be positioned in the
eye prior to treatment with the eyelash treatment device 200, or it
may be integral with device 200, and therefore placed in the eye or
under the lid during the treatment. Though the scleral shield 300
is shown in FIG. 6 to be used in the conjunction with the
embodiment of the eyelash treatment device 200 described in
relation to FIG. 5, it will be appreciated by the skilled artisan
that the scleral shield 300 can be used in conjunction with any of
the embodiments of the eyelash treatment device 200 disclosed
herein to create a system for safe and efficacious treatment of eye
disorders.
[0065] It will be further appreciated that the scleral shield 300
may include features which provide even more benefits to the
device. For example, the scleral shield 300 of some embodiments is
configured to reflect energy away from the eyeball and toward the
inner eyelids, providing heating to the inner eyelids. In some
embodiments, the scleral shield 300 may be made of, or coated with,
a light energy blocking material.
[0066] In some embodiments, an illumination source emitting blue or
violet light in the range of 400-450 nm may be used to reduce
and/or eliminate bacteria in the eye system 10. It is known that
exposure to visible light, more specifically, blue or violet light
wavelengths, causes inactivation of certain bacterial species.
Common bacteria include S. aureus, S. epidermidis, B. oleronius,
and P. acnes. In selecting wavelengths in the range of 400-450 nm,
a plurality of considerations may be taken into account. For
example, it is important that the emitting source (LED) does not
emit a significant amount of energy below about 400 nm, which is in
the UVA spectrum and can be associated with skin cancer.
[0067] In another embodiment utilizing LEDs as an illumination
source, the LED emitter 207 can include one or more multi-spectral
LEDs or multiple LEDs to emit light of differing or the same
wavelength from each LED. In some embodiments, each LED of the LED
emitter 207 is configured to emit light of a different wavelength.
The LED emitter 207 can emit the light from each differently
colored LED either consecutively or simultaneously. For example, in
some embodiments, the LED emitter 207 can include a red, green,
blue (RGB) LED system, or other multi-spectral LED system, to emit
light of various wavelengths in the visible light spectrum and IR
spectrum. In some embodiments, the LEDs of the LED emitter 207 can
be configured to operate simultaneously to emit white light.
Alternatively, in some embodiments, the user can select the
wavelength of light to be emitted from the multi-spectral LEDs.
Further, an LED with using a special phosphorescent coating may be
fabricated in order to produce the most efficient output spectrum
relative to input power.
[0068] FIG. 7 is a flow chart showing one embodiment of a method
for promoting eyelash growth using light energy. The method starts
by positioning an energy transducer providing light energy at a
first wavelength selected to proximate eyelash growth. For example,
a suitable wavelength may be in the range of about 450-700 nm for
eyelash growth, but the present invention is not limited to this
range. Next a scleral shield is positioned between the energy
transducer and eyeball, the scleral shield being made of, or coated
with, a light energy blocking material. Light energy is then
directed from the energy transducer toward the eyelash region at a
first wavelength suitable for stimulating and/or promoting eyelash
hair growth. The scleral shield blocks light energy directed toward
the eyeball to protect the eyeball from the light energy
[0069] In some embodiments, the energy transducer may also provide
light energy at a second wavelength selected to treat bacteria, for
example, a suitable wavelength may be in the range of 400-450 nm.
In still other embodiments, the energy transducer may also provide
light energy at a third wavelength to soften or melt meibum within
meibomian glands, for example, a suitable wavelength may be in the
range of about 700-1000 nm. These wavelengths are only examples and
the invention is not limited to these ranges.
[0070] Patient safety and comfort are important considerations in
the present device and method. Safety sensors and warnings can thus
advantageously be incorporated into the device. These include
sensors to make sure that a protective scleral shield 300 is in the
correct position prior to turning on an energy transducer module
120, thus preventing damage to the eye system 10, sensors for
preventing undesired activation of the device, sensors monitoring
the delivery of energy to the patient, or sensors for preventing
overheating of the skin. A safety warning apparatus can be
incorporated into the device to let the patient know of an unsafe
condition, and can include a flashing light, a flashing warning, a
sound warning beep, a picture, a vibration pattern, or words
indicative of the potential for or existence of an unsafe
condition.
[0071] For purposes of summarizing the disclosure, certain aspects,
advantages and features have been described herein. It is to be
understood that not necessarily all such advantages may be achieved
in accordance with any particular embodiment. Thus, the invention
may be embodied or carried out in a manner that achieves or
optimizes one advantage or group of advantages as taught herein
without necessarily achieving other advantages as may be taught or
suggested herein.
[0072] While this disclosure has been described in connection with
what are presently considered to be practical embodiments, it will
be appreciated by those skilled in the art that various
modifications and changes may be made without departing from the
scope of the present disclosure. It will also be appreciated by
those of skill in the art that parts mixed with one embodiment are
interchangeable with other embodiments; one or more parts from a
depicted embodiment can be included with other depicted embodiments
in any combination. For example, any of the various components
described herein and/or depicted in the Figures may be combined,
interchanged or excluded from other embodiments. With respect to
the use of substantially any plural and/or singular terms herein,
those having skill in the art can translate from the plural to the
singular and/or from the singular to the plural as is appropriate
to the context and/or application. The various singular/plural
permutations may be expressly set forth herein for sake of
clarity.
[0073] While the present disclosure has described certain exemplary
embodiments, it is to be understood that the disclosure is not
limited to the disclosed embodiments, but, on the contrary, is
intended to cover various modifications and equivalent arrangements
included within the scope of the appended claims, and equivalents
thereof.
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