A GUIDE FOR AN EYE DROP DISPENSER BOTTLE FOR THE SELFADMINISTRATION
OF EYE DROPS
The present invention relates to a removable guide for positioning an eye drop
dispenser relative to a user's eye during the administration of eye drops.
The self-administration of eye drops using gravity can be a difficult task not least
because of the awkward position that a user has to adopt during the administration
of eye drops. When applying eye drops, a user is required to tilt their head back and
hold an eye drop dispenser directly above the eye to be treated. This position not
only makes it difficult to apply eye drops accurately, which can result in the eye being
missed all together in some instances, but can also lead to a loss of depth perception.
The latter effect can make it difficult for some users to gauge exactly how far the eye
drop dispenser is from the eye to be treated. These problems can result in a user
losing confidence in their ability to self-administer eye drops.
A variety of guides that attempt to address these problems have been proposed. One
such guide, in the form of a dispenser cap for an eye drop dispenser, is shown in
US2010/0174248. The dispenser cap defines a cavity for enclosing the dispensing
nozzle of the eye drop dispenser. The dispenser cap includes a holder that engages
with the eye drop dispenser, along with a cap enclosure and an eyelid engaging
member, both of which pivotally extend from the holder. During use, the eyelid
engaging member is positioned on either the upper or lower section of the eyelid to
pull the eyelid open and align the dispensing nozzle with the eye being treated.
However the eyelid engaging member remains free to pivot about the holder during
use. This means that the position of the dispensing nozzle can vary during use, which
makes it difficult to maintain alignment between the dispensing nozzle and the eye
being treated. Also, the fact that the eyelid engaging member is only positioned on
either the upper or lower section of the eyelid means that the opposing section is free
to move during the administration of eye drops, which can result in the user blinking
during the administration of eye drops. These drawbacks mean that the guide is
cumbersome to use when held in the awkward position described above.
Another such guide is shown in US4960407. This guide sits on the neck and shoulder
region of an eye drop dispenser and includes an arm extending outwardly from the
dispenser in the direction of the dispensing nozzle. A ring attached to the end of the
arm remote from the eye drop dispenser is positioned around a user's eye during use
to ensure alignment with the dispensing nozzle. The ring does not, however, function
to hold the eyelids open. The guide comprises other components that allow it to
rotate from an operational position, in which the ring is positioned downstream from
the dispensing nozzle, to a stowed position where the ring is positioned below the
eye drop dispenser. However the combination of the guide and eye drop dispenser
when in the stowed position increases the overall dimensions when compared the
eye drop dispenser alone, making it less practical to carry and use. Moreover, the
guide is made from at least two separate components, which adds to its complexity
and manufacturing costs.
The aim of the present invention is to overcome or substantially mitigate at least the
problems outlined above.
According to a first aspect of the invention, there is provided a guide for delivering an
eye drop solution from a dispenser bottle to a user's eye under gravity comprising an
attachment device for detachable engagement with the dispenser bottle; two arms
extending outwardly from the attachment device; a positioning member bridging the
ends of the arms, the positioning member having a semi-circular profile; and, two
living hinges connecting the attachment device to the arms at the ends remote from
the positioning member, the living hinges being adapted to rotate the guide between
a stowed position and an operational position repeatedly when the guide is attached
to the dispenser bottle, such that when in the operational position the positioning
member is located between the dispenser bottle and the user's eye so as to ensure
alignment of the dispenser bottle with respect to the user's eye during the
administration of the eye drop solution, the guide further comprises a first locking
arrangement for locking the guide in the operational position thereby ensuring that
the distance between the user's eye and the dispenser bottle is fixed during the
administration of the eye drop solution. The fact the attachment means can be
removably attached to the dispenser bottle means that the guide can be reused on
other dispenser bottles.
Preferably, the positioning member is arranged to be resiliently deformable under
manual pressure so that the distance of the opening in the semi-circular profile can
be increased or decreased. If necessary, the distance of the opening in the semi
circular profile of the positioning member can be decreased up to the extent that the
opening closes. The distance of the opening in the semi-circular profile of the
positioning member can be decreased by at least substantially 2mm or preferably
5mm. The fact that the positioning means is resiliently deformable means that the
positioning means can automatically return to its biased state following deformation.
In use, this action is beneficially used to apply a light pressure to the upper and lower
eyelids to gently prise and hold them open so as to increase the exposed surface area
of the eye being treated. Moreover, the fact that the eyelids are held open by the
positioning means prevents the user from blinking during the application of eye
drops.
Preferably, the first locking arrangement a first pair of lugs extending from the
attachment means and a second pair of lugs extending from the two arms, wherein
the first pair of lugs comprise holes arranged to receive respective protrusions on the
second pair of lugs in an interference fit when the guide is in the operational position.
The first locking arrangement is adapted to disengage when the guide is rotated
under manual pressure from the operational position. Preferably, the second pair of
lugs are arranged to contact the attachment member when the guide is in the
operational position so as to prevent the guide from rotating past the operational
position. The fact that the second pair of lugs are arranged to contact the attachment
means not only helps to keep the guide in the operational position but also prevent
the guide from being forced past the operational position, which could damage the
living hinges.
The guide may further comprise a second locking arrangement for locking the guide in
the stowed position. The second locking arrangement comprises engaging or clipping
the positioning member around the body of the dispenser bottle in an interference
fit. Preferably, the second locking member is adapted to disengage when the guide is
rotated under manual pressure from the stowed position. This arrangement ensures
that the overall dimensions of the combination of the guide and the dispenser bottle
remains compact, which make it practical to carry and use.
Preferably, the attachment means further comprises a wall arranged to contact the
dispenser bottle when the guide is attached to the dispenser bottle. The wall is
adapted to engage the dispenser bottle so as to stabilise the guide during the
administration of eye drops by ensuring that the attachment member remains
substantially aligned with the horizontal plane of the dispenser bottle.
Preferably, the arms and the positioning member are arranged to rotate about the
attachment device through substantially 180 degrees between the stowed position
and the operational position, and the end surface of the positioning member
comprises a plurality of coarse areas. The presence of coarse areas on the end
surface of the positioning member improves the gripping force of the guide on the
eyelids which, in turn, reduces the pressure that is required to be applied by the
guide.
Preferably, the attachment device comprises an open collar resiliently deformable
under manual pressure. This allows the attachment device to be easily and
conveniently clipped on and secured around the neck of the dispenser bottle.
Preferably, the guide is formed as a unitary structure. The fact that the guide is made
as a single piece makes it more robust than other guides that comprise two or more
components. It also reduces the overall complexity of the guide and minimises
manufacturing costs.
According to a second aspect of the invention, there is provided a method of using
the guide when attached to a dispenser bottle, the method comprising the steps of: i)
rotating the guide to an operational position; ii) compressing the ends of the
positioning member to reduce the opening in the semi-circular profile of the
positioning member; iii) inverting the dispenser bottle; iv) aligning the dispenser
bottle with the eye to be treated by placing the positioning member around the eye
so that it extends across the upper and lower eyelids; v) releasing the ends of the
positioning member so as to prise and hold the eyelids open, and prevent blinking
during the administration of eye drops; and, vi) compressing the body of the
dispenser bottle to induce drops to fall from a dispensing nozzle onto the user's eye.
These and other aspects of the invention will now be described, by way of example
only, with reference to the accompanying drawings, in which:
FIG 1 is a perspective view of a guide for an eye drop dispenser in accordance with
the invention;
FIG 2 is a perspective view of the guide of FIG 1 removably attached to the eye drop
dispenser in a stowed position;
FIG 3 is a perspective view of the guide of FIG 1 removably attached to the eye drop
dispenser midway between the stowed position and an operational position; and,
FIG 4 is a perspective view of the guide of FIG 1 removably attached to the eye drop
dispenser in the operational position.
In the drawings, like parts are denoted by like reference numerals.
FIG 1 shows a guide 2 for an eye drop dispenser in accordance with the invention.
The various features of the guide are beneficially arranged to facilitate the application
of an eye drop solution in an easily controlled, fast, safe, and repeatable manner. The
guide 2 comprises an attachment device in the form of an open collar 6 (hereinafter
"the collar"), which is used to clip the guide 2 onto an eye drop dispenser 4
(hereinafter "the dispenser"). With reference to FIG 2, the collar 6 is adapted to be
resiliently deformable under manual pressure, which enables it to be pushed over
and removably secured to the neck region of the dispenser 4. The opening in the
collar 6 is outwardly tapered to facilitate the correct positioning of the guide 2 before
the collar 6 is pushed over the neck of the dispenser 4. A wall 8 extends downwardly
from the outer circumference of the collar 6 and is arranged to sit on the shoulder of
the dispenser 4. The wall 8 is adapted, in combination with the shoulder of the
dispenser 4, to stabilise the guide 2 during the administration of eye drops by
ensuring that the collar 6 remains substantially aligned with the horizontal plane of
the dispenser 4. The inner circumference of the collar 6 comprises a plurality of
inwardly projecting teeth for engaging the neck of the dispenser 4. Alternatively, the
inner circumference of the collar 6 can be smooth.
The collar 6 further comprises two end regions 10 that are radially opposite each
other. Two hinged sections 12, in the form of multiple use living hinges, are secured
at one end to respective end regions 10. That is, the hinged sections 12 are thin
flexible hinges made from the same material as the rest of the guide 2. The use of
living hinges is beneficial because it minimises the complexity of the guide 2 and
ensures that the guide 2 can be manufactured as a single piece. That is, the guide 2 is
formed as a unitary structure. The fact that the guide 2 is made as a single piece
makes it more robust than other guides that comprise two or more parts.
The guide 2 further comprises two arms 14 integrally form with and secured to the
other end of respective hinged sections 12. The arms 14 extend downwardly from
their respective hinged sections 12 either side of the dispenser 4 when the guide 2 is
attached to the dispenser 4. A positioning member in the form of a bridging section
16 having a substantially semi-circular profile contoured to fit an eye connects the
ends of the arms 14 remote from the hinged sections 12. The arms 14 and the
bridging section 16 are resiliently deformable under manual pressure so as to
increase or reduce the gap in the semi-circular profile of the bridging section 16. This
enables the bridging section 16 to be pushed over the body of the dispenser 4 and
substantially locked into a stowed position as shown in FIG 2. When in the stowed
position, the inner surface of the bridging section 16 is arranged to substantially
conform with and extend around a significant proportion of the circumference of the
body of the dispenser 4. More specifically, the inner surface of the bridging section
16 extends around approximately two thirds of the circumference of the body of the
dispenser 4. This arrangement allows the guide 2 to be snapped onto and securely
held in the stowed position around the body of the dispenser 4. With the guide 2 in
the stowed position, the overall dimensions of the dispenser 4 and guide 2 remain
largely the same as those of the dispenser 4 alone.
The hinged sections 12 act as pivots to effect substantially 180 degree rotational
movement of the arms 14 and the bridging section 16 about the collar 6 between the
stowed position, as shown in FIG 2, and an operational position as shown in FIG 4.
FIG 3 shows the guide 2 positioned midway between the stowed position and the
operational position. In the operational position, the bridging section 16 of the guide
2 is located above the dispenser 4 and intersects the eye solution delivery line 17 of
the dispensing nozzle (not shown). The bridging section 16 is used to align or position
the dispenser 4 with respect the eye to be treated when the guide 2 is in the
operational position. The end surface of the bridging section 16 comprises a plurality
of areas 22 having a coarse surface finish when compared to the surface finish of the
rest of the guide 2. A first pair of lugs 18 extends from the upper surface of the collar
6. A second pair of lugs 20 protrudes from the arms 14 near the hinged sections 12.
The first pair of lugs 18 comprise holes that are arranged to receive respective
protrusions on the second pair of lugs 20 when the guide 2 is in the operational
position. This provides a locking arrangement that substantially locks the guide 2 in
the operational position. As a result, the distance between the bridging section 16
and the dispensing nozzle of the dispenser 4 remains fixed during the administration
of eye drops. This locking arrangement can be overcome by moving the guide 2
under manual pressure from the operational position. Alternative means for locking
the guide 2 in the operational position are also envisaged. For example, the guide 2
could use a rack and pawl combination or the like. Alternatively the hinged sections
12 may comprise living hinges that adapted to substantially lock the guide 2 in
position when the guide 2 is rotated into the operational position. The second pair of
lugs 20 may be modified to engage the upper surface of the collar 6 when the guide 2
is in the operational position so as to prevent the guide 2 from being forced past the
operational position.
In use, a user rotates the guide 2 from the stowed position to the operational
position. The user then squeezes the ends of the resiliently deformable bridging
section 16 to reduce the gap in the semi-circular profile of bridging section 16. The
bridging section 16 can be deformed in this manner up to the extent that the gap in
the semi-circular profile of bridging section 16 closes. The user then inverts the
dispenser 4 and places the bridging section 16 of the guide 2 around the eye so that it
extends across both the upper and lower eyelids. The user, while holding the bridging
section 16 against the upper and lower eyelids, then releases the ends of the bridging
section 16. As a result, the bridging section 16 automatically returns back to its
biased state. That is, the bridging section 16 automatically returns to its original
dimensions, which include a gap in the semi-circular profile of the bridging section 16
of substantially 2cm. This has the effect of applying a light pressure to the upper and
lower eyelids to gently prise and hold them open, thereby increasing the exposed
surface area of the eye that would have otherwise been exposed had the bridging
section 16 not been resiliently deformable. The fact that the bridging section 16
holds the eyelids open removes the need for the user, or anyone else, to use their
fingers to hold the eyelids open, which is not always hygienic. The presence of the
coarse areas 22 at the end surface of the bridging section 16 improves the gripping
force acting on the eyelids by the guide 2. This means that the pressure applied to
the eyelids by the guide 2 can be minimised. Moreover, the fact that the bridging
section is held against both the upper and lower eyelids during use prevents the user
from blinking during the administration of eye drops. Using the guide 2 ensures that
the dispenser 4 is positioned correctly with respect to the user's eye. As a result, the
dispensing nozzle can be aligned with the user's eye in a repeatable manner and at a
predetermined distance from the eye, thereby minimising the time that the user is
required to adopt the awkward position outlined above. The dispenser 4 may then
be squeezed to induce drops to fall from the dispensing nozzle onto the user's eye.
Various modifications will be apparent to those skilled in the art. For example, in an
alternative embodiment, the collar 6 of the guide 2 may be a closed collar instead of
the open collar as described above. Such a collar can be removably secured around
the neck of the dispenser 4 only after the cap of the dispenser 4 has been removed.
The collar 6 can then be placed over and secured around the neck of the dispenser 4.
Alternatively the guide 2 could be moulded to the dispenser 4 itself.
Claims
A guide for delivering an eye drop solution from a dispenser bottle to a user's
eye under gravity, the guide comprising:
an attachment device for removably attaching the guide to the
dispenser bottle;
two arms extending outwardly from the attachment device;
a positioning member bridging the ends of the arms, the positioning
member having a semi-circular profile; and,
two living hinges connecting the attachment device to the arms at the
ends remote from the positioning member, the living hinges being adapted
to rotate the guide between a stowed position and an operational position
repeatedly when the guide is attached to the dispenser bottle, such that
when in the operational position the positioning member is arranged
between the dispenser bottle and the user's eye,
the guide further comprising a first locking arrangement for locking the guide
in the operational position.
The guide according to claim 1, wherein the positioning member is resiliently
deformable under manual pressure so as to increase or decrease the
distance of the opening in the semi-circular profile.
The guide according to claim 2, wherein the distance of the opening in the
semi-circular profile of the positioning member can be decreased to the
extent that the opening closes.
The guide according to claims 2 or 3, wherein the distance of the opening in
the semi-circular profile of the positioning member can be decreased by at
least substantially 2mm.
5. The guide according to any one of claims 2 to 4, wherein the distance of the
opening in the semi-circular profile of the positioning member can preferably
be decreased by 5mm.
6. The guide according to any preceding claim, wherein the first locking
arrangement comprises a first pair of lugs extending from the attachment
means and a second pair of lugs extending from the two arms, wherein the
first pair of lugs comprise holes arranged to receive respective protrusions on
the second pair of lugs to form an interference fit when the guide is in the
operational position.
7. A guide according to claim 6, wherein the first locking arrangement is
adapted to disengage when the guide is rotated under manual pressure from
the operational position.
8. The guide according to claims 6 or 7, wherein the second pair of lugs are
arranged to contact the attachment device when the guide is in the
operational position to prevent the guide from rotating past the operational
position.
9. The guide according to any preceding claim, further comprising a second
locking arrangement for locking the guide in the stowed position when the
guide is attached to the dispenser bottle.
10. The guide according to claim 9, wherein the second locking arrangement
comprises engaging the positioning member around the body of the
dispenser bottle in an interference fit.
11. The guide according to claim 10, wherein the second locking arrangement is
adapted to disengage when the guide is rotated under manual pressure from
the stowed position.
12. The guide according to any preceding claim, wherein the attachment device
further comprises a wall arranged to contact the dispenser bottle when the
guide is attached to the dispenser bottle.
13. The guide according to any preceding claim, wherein the arms and the
positioning member are arranged to rotate about the attachment device
through substantially 180 degrees between the stowed position and the
operational position.
14. The guide according to any preceding claim, wherein the attachment device
comprises an open collar resiliently deformable under manual pressure.
15. The guide according to any preceding claim, wherein the end surface of the
positioning member comprises a plurality of coarse areas.
16. The guide according to any preceding claim, wherein the guide is formed as a
unitary structure.
17. A method of using the guide of any one of claims 2 to 16 when attached to a
dispenser bottle, the method comprising the steps of:
rotating the guide to an operational position;
compressing the ends of a positioning member to reduce the opening
in the semi-circular profile of the positioning member;
inverting the dispenser bottle;
aligning the dispenser bottle with the eye to be treated by placing the
positioning member the eye so that it extends across the upper and lower
eyelids;
releasing the ends of the positioning member so as to hold the eyelids
open and prevent blinking during the administration of eye drops; and,
compressing the body of the dispenser bottle to induce drops to fall
under gravity from a dispensing nozzle onto the user's eye.