Contact lens package with draining port

Abstract

A contact lens package includes a base having a proximal end and a distal end, a solution well between the proximal end and the distal end, a contact lens support in the solution well, a top opening between the proximal end and the distal end and over the contact lens support, and a via through a wall of the base adjacent the well, the via providing a fluid exit for solution within well. A removable lid overlying the top opening may be removably affixed over the top opening such that a user may remove the lid to access the contact lens. Using this package, fluid can be drained away from the contact lens in the package before removal from the package by a user, thus providing good adhesion between a user's finger or applicator and the lens over prior packaging.

Description

I. BACKGROUND OF THE INVENTION

In a conventional contact lens package, the contact lens typically sits in a molded plastic base having a cavity (or “bowl”) that houses the contact lens in a bowl filled with solution. As a result, the user experience for transferring a contact lens from the package to an eye generally involves the user “fishing” the contact lens out of the bowl with a finger and then flipping the lens so that it is in the correct orientation on the finger for placement on the eye. This process requires touching the lens multiple times, which can transfer contaminants or pathogens from the hand to the lens and ultimately to the eye. Not only is this handling experience unsanitary, but it is also unduly cumbersome, messy, and mechanically stressful to the lens, which can tear, rip, or distort when overly manipulated.

In view of the growing awareness around ocular health and the customer demand for a more convenient experience, a need has arisen for contact lens packaging that enables a less messy and more sanitary contact lens handling process. Among other considerations: it would be desirable for wearers to be able to drain away any packaging solution which might impact the ability of adhering the lens to the finger, as variation in the amount of packaging solution adhering to the lens and package can impact the process of placing the lens on the finger. A mechanism for efficient draining of packing solution from the lens within the package prior to taking the lens from an opened contact lens package onto a user's finger can aid in the removal and insertion process.

The foregoing noted deficiencies of the prior art are merely exemplary and not exhaustive.

There remains a need for contact lens packages which provide a consistent solution draining if desired by the user.

II. SUMMARY

It has now been found that some or all the foregoing and related advantages may be attained in a contact lens package having one or more aspects described herein. For example, a contact lens package may have a base with a cavity that houses a contact lens and packaging solution, wherein the package is configured such that upon opening the package by a wearer the packaging solution drains away from the contact lens.

Thus, according to principles described herein a contact lens package includes a base having a proximal end and a distal end, a solution well between the proximal end and the distal end, a contact lens support in the solution well, a top opening between the proximal end and the distal end and over the contact lens support, and a via through a wall of the base adjacent the well, the via providing a fluid exit for solution within well. A removable lid overlying the top opening may be removably affixed over the top opening such that a user may remove the lid to access the contact lens. Optionally, the removable lid covers the via to block fluid exit of solution within the well until the removable lid is removed. The wall in which the via is formed may be an end wall at the distal end of the base. In such case, the removable lid may include a lid flap extending over the end wall to cover the via to block fluid exit of solution within the well until the removable lid is removed. The lid flap may be removable in such a way to unblock the via without dislodging the lid over the top opening. In an alternative aspect, the removable lid may include a tab overlying the via to block fluid exit of solution within the well. The tab may be removed without dislodging the lid over the top opening. In another option, the removable tab covers the via, separate from any portion of the lid, to block fluid exit of the solution within the well until the removable tab is removed.

In one optional configuration, the well is formed by a bottom wall of the base, an end wall at the distal end of the cavity and a front wall between a proximal edge of the base and the contact lens support. In an option, the front wall is neither perpendicular to nor parallel to the bottom wall of the well, e.g., may be a slanted portion from the proximal end of the base to the bottom wall of the base. In another option, the front wall is approximately parallel to the end wall to form a cavity that serves as the well cavity. In an option, the via is proximate to an intersection between the end wall and the bottom wall of the base.

A contact lens in a contact lens package having a base having a proximal end and a distal end, a solution well between the proximal end and the distal end, a contact lens support in the solution well, a contact lens held via the contact lens support, packaging solution in the well, a top opening between the proximal end and the distal end and over the contact lens support; a fluid port through a wall of the base adjacent the well, and a removable cover blocking the fluid port, may be accessed by removing the removable cover from blocking the fluid port; tipping the contact lens package to cause the solution to exit the well through the opened fluid port, and accessing the contact lens held by the contact lens support

III. BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and other features and advantages of the invention will be apparent from the following, more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings.

FIG. 1A illustrates an unopened contact lens package according to principles described herein.

FIG. 1B illustrates a lid of the contact lens package separate from a base of the contact lens package according to principles described herein.

FIG. 1C illustrates the base of the contact lens package with the lid removed according to principles described herein.

FIG. 1D illustrates a cross section of the base 118 of the contact lens package with the lid 112 removed according to principles described herein.

FIGS. 2A-2D illustrate opening a contact lens package, draining packaging solution and removing a contact lens according to principles described herein.

FIGS. 3A-3D illustrate opening a contact lens package, draining packaging solution and removing a contact lens according to principles described herein.

FIGS. 4A-4C illustrate an embodiment of a contact lens package with a drain port through an end wall, according to principles described herein.

FIGS. 5A-5D illustrate opening a contact lens package of FIGS. 4A-4C, draining packaging solution and removing a contact lens according to principles described herein.

FIGS. 6A-6C illustrate an embodiment of a contact lens package with a drain port through an end wall, according to principles described herein.

FIGS. 7A-7D illustrate opening a contact lens package of FIGS. 6A-6C, draining packaging solution and removing a contact lens according to principles described herein.

FIGS. 8A and 8B illustrate alternative locations of drain ports according to principles described herein.

IV. DETAILED DESCRIPTION

Reference will now be made in detail to representative embodiments illustrated in the accompanying drawings wherein reference numerals indicate certain elements. The following descriptions are not intended to limit the myriad embodiments to one preferred embodiment. To the contrary, it is intended to cover alternatives, modifications, and equivalents as can be included within the spirit and scope of the described embodiments as defined by the appended claims.

References to “one embodiment,” “an embodiment,” “some embodiments,” “an example embodiment,” etc., indicate that the embodiment described may include a particular feature, structure, aspect, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, aspect, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Lens(es) or contact lens(es) refer to ophthalmic devices that reside on the eye. They have a generally hemispheric shape and can provide optical correction, cosmetic enhancement, UV blocking and visible light or glare reduction, therapeutic effect, including wound healing, delivery of drugs or neutraceuticals, diagnostic evaluation or monitoring, or any combination thereof. The term lens includes soft hydrogel contact lenses, which are generally provided to the consumer in a package in the hydrated state, and have a relatively low moduli, which allows them to conform to the cornea. Contact lenses suitable for use with the packages of the present invention include all hydrated contact lenses, including conventional and silicone hydrogel contact lenses.

A hydrogel is a hydrated crosslinked polymeric system that contains water in an equilibrium state, and may contain at least about 25%, or at least 35% water in the hydrated state. Hydrogels typically are oxygen permeable and biocompatible, making them excellent materials for producing contact lenses.

Conventional hydrogel contact lenses do not contain silicone containing components, and generally have higher water content, lower oxygen permeability, moduli, and shape memories than silicone hydrogels. Conventional hydrogels are prepared from monomeric mixtures predominantly containing hydrophilic monomers, such as 2-hydroxyethyl methacrylate (“HEMA”), N-vinyl pyrrolidone (“NVP”) or polyvinyl alcohols. U.S. Pat. Nos. 4,495,313, 4,889,664 and 5,039,459 disclose the formation of conventional hydrogels. Conventional hydrogels may be ionic or non-ionic and include polymacon, etafilcon, nelfilcon, ocufilcon lenefilcon and the like. The oxygen permeability of these conventional hydrogel materials is typically below 20-30 barrers.

Silicon hydrogel formulations include balafilcon samfilcon, lotrafilcon A and B, delfilcon, galyfilcon, senofilcon A, B and C, narafilcon, comfilcon, formofilcon, riofilcon, fanfilcon, stenfilcon, somofilcon, kalifilcon and the like. “Silicone hydrogels” refer to polymeric networks made from at least one hydrophilic component and at least one silicone-containing component. Silicone hydrogels may have moduli in the range of 60-200, 60-150 or 80-130 psi, water contents in the range of 20 to 60%. Examples of silicone hydrogels include acquafilcon, asmofilcon, balafilcon, comfilcon, delefilcon, enfilcon, fanfilcon, formofilcon, galyfilcon, lotrafilcon, narafilcon, riofilcon, samfilcon, senofilcon, somofilcon, and stenfilcon, verofilcon, including all of their variants, as well as silicone hydrogels as prepared in U.S. Pat. Nos. 4,659,782, 4,659,783, 5,244,981, 5,314,960, 5,331,067, 5,371,147, 5,998,498, 6,087,415, 5,760,100, 5,776,999, 5,789,461, 5,849,811, 5,965,631, 6,367,929, 6,822,016, 6,867,245, 6,943,203, 7,247,692, 7,249,848, 7,553,880, 7,666,921, 7,786,185, 7,956,131, 8,022,158, 8,273,802, 8,399,538, 8,470,906, 8,450,387, 8,487,058, 8,507,577, 8,637,621, 8,703,891, 8,937,110, 8,937,111, 8,940,812, 9,056,878, 9,057,821, 9,125,808, 9,140,825, 9,156,934, 9,170,349, 9,244,196, 9,244,197, 9,260,544, 9,297,928, 9,297,929 as well as WO 03/22321, WO 2008/061992, and US 2010/0048847. These patents are hereby incorporated by reference in their entireties. Silicone hydrogels may have higher shape memory than conventional contact lenses.

Hydrogel lenses are viscoelastic materials. Contact lenses can form optical distortions if the lens interacts with either the package or any air bubble in the package. The extent of the optical distortions, and the length of time needed for the distortions to relax out will vary depending on the chemistry, and to a lesser extent, geometry of the lens. Conventional lens materials, such as polyhydroxyethyl methacrylate-based lenses like etafilcon A or polymacon have low loss modulus and tan delta compared to silicone hydrogels and may form fewer and less severe optical distortions as a result of contact with packaging. The incorporation of silicones (which generally increase the bulk elastic response), wetting agents such as PVP (which generally increase the viscous response) or coatings of conventional hydrogel materials (which may lower the elastic response at the lens interface) can alter the lens viscoelastic properties. Conventional hydrogel contact lenses and silicone hydrogel contact lenses having short or stiff crosslinking agents and or stiffening agent have short shape memories and may be less susceptible to deformation during storage. As used herein, high or higher shape memory hydrogels display optical distortions from contact with an air bubble or package of at least about 0.18 after 5 weeks of accelerated aging at 55° C. Viscoelastic properties, including loss modulus and tan delta, can be measured using a dynamic mechanical analysis.

The contact lenses can be of any geometry or power, and have a generally hemispherical shape, with a concave posterior side which rests against the eye when in use and a convex anterior side which faces away from the eye and is contacted by the eyelid during blinking.

Embodiments may include a lens support surrounded by a sealable cavity also interchangeably referred to as a chamber. The cavity may have any convenient form and may comprise a package base and at least a lid, each of which are described in detail below. As used herein, the phrases “the lid”, “a lid”, “the base” and “a base” encompass both the singular and plural. The lid and package base are sealed to each other to form a cavity which holds the contact lens, support and packaging solution in a sterile state during shipping and storage prior to use. The contact lens package is made from materials which are compatible with the contact lens and solution, as well as retortable and biologically inert.

“Film” or “multilayer film” are films used to seal the package and are often referred to as lidstock. Multilayer films used in conventional contact lens packages may be used in the packages of the present invention as the base, a component of the lid, or both. Multilayer films comprise a plurality of layers, including barrier layers, including foil layers, or coatings, seal layers, which seal the film to the rest of the package, and may also comprise additional layers selected from peel initiation layers, lamination layers, and layers that improve other package properties like stiffness, temperature resistance, printability, puncture resistance, barrier resistance to water or oxygen and the like. The multilayer films form a steam sterilizable (retortable) seal. The multilayer film can include PET, BON or OPP films layers to increase stiffness and temperature resistance, or to EVOH or PVDC coatings to improve barrier resistance to oxygen or moisture vapor.

An “unopened state” or “unopened” as used herein refers to a contact lens package that is closed and houses a contact lens in solution.

An “opened state” or “opened” as used herein refers to a contact lens package after the sterile seal has been broken. Depending on the context described herein, the open state extends to the state of the package when the user has manipulated the package to cause the lens to be lifted out of the packaging solution for transfer by the user.

A “wearer” or “user” as used herein refers to a person opening a contact lens package. The user is generally referred to as the person who both opens the package and transfers the contact lens contained therein to their eye. However, the user in some contexts may be a person handling the lens package on behalf of the wearer, such an eye care provider (“ECP”) or another individual demonstrating for or assisting the wearer.

Packaging solution is any physiologically compatible solution, which is compatible with the selected lens material and packaging. Packaging solutions include buffered solutions having a physiological pH, such as buffered saline solutions. The packaging solution may contain known components, including buffers, pH and tonicity adjusting agents, lubricants, wetting agents, nutraceuticals, pharmaceuticals, in package coating components and the like.

References throughout this description to injection molding processes and the use of materials conventionally applied to injection molding should be understood as exemplary. Those of skill in the art will appreciate that other means of manufacture are possible within the scope of the appended claims, including but not limited to alternative molding processes, thermoforming, 3D printing, and the like. Likewise, references to heat seals and heat sealing are exemplary to embodiments described herein. Other means of securing packaging components will be apparent to those skilled in the art, including the use of adhesive, glue, thermal bonding, welding such as heat, ultrasonic or laser welding, or a mechanical trap, and the like.

FIGS. 1A-1C illustrate components of a contact lens package according to an exemplary embodiment of the present invention. FIG. 1A illustrates an unopened contact lens package 100 according to principles described herein. FIG. 1B illustrates a lid 112 of the contact lens package 100 separate from a base 118 of the contact lens package. FIG. 1C illustrates the base 118 of the contact lens package 100 with the lid 112 removed. FIG. 1D illustrates a cross section of the base 118 of the contact lens package 100 with the lid 112 removed.

An unopened contact lens package 100 includes a base 118 and a lid 112 covering the base. The lid 112 may include an opening tab 110 at a proximal end of the base, which may be integral to lid 112. In an optional configuration, the opening tab 110 may be affixed to or integral with the lid 112, but at least partially unattached to the base 118 but moveably connected to the lid 112 so that the opening tab 110 may be grasped by a user.

As illustrated in FIGS. 1A and 1B, the lid 112 of the contact lens package 100 may also include a grasping member 106 operatively connected to the lid 112 or the opening tab 110, as shown at FIG. 1A. The grasping member 106 may be provided to aid the user in opening the package and may be made of plastic or be an extension of the opening tab 110 or lid 112, as appropriate. The grasping member 106 may be textured to aid in the grasping for removal of the lid 112, the direction of which is indicated by the leftmost arrow in FIG. 1A. In any of the embodiments described herein, the opening tab 110 and lid 112 are formed of a film or multilayer film as described herein.

As illustrated in FIG. 1C, the contact lens package 100 further includes a base 118 comprising a cavity 120. In the illustrated embodiment, the cavity 120 includes a well 128 that holds packaging solution when the package is in an unopened state. The base further includes a lens support 122, which may be convex, as illustrated in FIG. 1D. It is noted that, while illustrated as a convex lens support 118, the cavity 120 may include or be a “bowl” type lens support without departing from the principles described herein.

As illustrated in FIG. 1C, the base 118 includes a via or fluid port 124 at the distal end of the base 118, which, in an unopened state is blocked or closed by the lid 112 or other mechanism, such as a tab 126. As illustrated in FIG. 1C, the base may include a well 128 adjacent to the contact lens support 122, the well 128 is in fluid communication with the contact lens support 122 and the opening such that fluid drains away from the contact lens into the well 128 and out of the package 100 via the port 124. The port 124 is located adjacent to an in fluidic communication with the well 128 such that packaging solution may drain from the well 128 when the port 124 is opened, unblocked or pierced, e.g., be removing a removable cover. When the contact lens package 100 is in an unopened state, as in FIG. 1A, the port 124 is fluidically sealed by the lid 112 or other mechanism, such as tab 126. The lid 112 may further include a flap 114 that extends over the distal end of the base 118 of the contact lens package where it is sealed to the base 118 to provide the fluidic seal of the cavity 120 and/or the port 124 until the lid is removed by the user. The distal end of the lid 112 may include distal tab 126 by which the user may open the fluidic seal at the distal end of the contact lens package to open the port 124, causing the packaging solution 130 to drain from the cavity 120 within the base 118. Draining the solution liquid may be performed by tipping the contact lens package to urge the solution through the port by gravitational force or, optionally, by squeezing or shaking the package to cause inertial forces to drain the solution.

Optionally, the lid flap 114 provides the seal that blocks the port 124 in an unopened state. The contact lens package 100 may optionally include a removable tab 126 that blocks the port 124, whereby the user may remove the tab 126 separately from the lid 112 to drain the packaging solution from the well 128 without removing the lid 112 from the base. For example, in one aspect, the tab 126 may be used to pry up the entire lid flap 114 to expose the drain port 124 (or drain port 224, as illustrated in FIGS. 4A-C and 5A-D), may be a part of the lid flap 114 that may be separately removable from the lid flap 114, such as by perforations or thinned structure, as illustrated in FIGS. 1A and 4A, or may be a component that covers the drain port 124/224 in the absence of a lid flap 114, as shown in FIG. 3A. Such configuration allows the user to drain the packaging fluid from the well 128 without exposing the contact lens to the outside environment or risking dislodging the contact lens or it falling out of the opened package during draining of the packaging solution via the port. In any of the described embodiments, the removable tab 126 may be part of the package in lieu of the lid flap 114 or in addition to the lid flap 114. In some embodiments, a protrusion or other additional structure may be disposed within the base or lid of the package to prevent the lens from sliding into and blocking the port. It is also noted some embodiments may additionally include an air entry route in addition to the port. An air entry route may be effected in myriad ways, such as by allowing the lid to be partially opened at the opposite end of the port.

As illustrated in FIG. 2A, to access the contact lens, a user holds an unopened contact lens package 100 and pulls the opening tab 110 of the lid 112 of the package 100 in the direction of the arrow. The opening may be assisted by the user grasping optional grasping tab 106, which in turn is affixed to or integral with the opening tab 110 and/or the lid 112. Although not required, the user may grasp the package 100 with one hand and pull the opening tab 110 with the other hand. As illustrated at step shown in FIG. 2B, pulling the opening tab 110 causes the lid 112 to bend and break a seal between the lid 112 and a base 118 of the package 100. The lid 112 may be a multilayer film or laminated foil seal that is heat sealed to an upper portion of the package comprising opening tab 110, the lid 112, and optionally the grasping member 106 lens support 126 and the lid flap 114 at the distal end of package 100.

As mentioned above, the port 124 at the distal end of the package 100 is fluidically connected to the well 128. As shown in FIG. 2C, the lid 112 may be configured to fluidically seal the port 124 such that removal of the lid 112 opens the port 124, allowing the packaging solution 130 within the well 128 to drain away from the contact lens on the lens support and exit the well 128 via the port 124. The contact lens 132, thus exposed by removal of the lid 112 and draining of the packaging solution 130 allows a user to access the contact lens 122 and dab the contact lens 132 to remove it for insertion into the wearer's eye.

FIGS. 3A-D illustrate features of the optional distal tab 126. As shown in FIG. 3A, the optional distal tab 126 may be configured to be moved away from the port 124 with the remainder of the lid 112 remaining in place. The user grasps the distal tab 126, which is heat sealed or otherwise removably affixed to the base 118. Moving the distal tab 126 away from base end wall 134 reveals and opens the port 124, allowing the packaging solution 130 to be released from the well 128. Draining the solution liquid may be performed by tipping the contact lens package to urge the solution through the port by gravitational force.

In the illustration of FIGS. 3A-3C, the distal tab 126 is integral to the lid 112, but this configuration is not essential. The distal tab 126 may be separate from the lid 112 and/or may be under the lid flap 114, in which case movement of the distal tab 126 would dislodge the lid flap, such that the lid 112 may be removed by grasping the lid flap 114 from the distal end of the contact lens package.

FIGS. 4A-C illustrate optional or alternative features of the contact lens package according to principles described herein. As illustrated in FIG. 4A, on alternative configuration of the drain port 224 is a via through distal end wall 134 of the base 118 spaced away from a lower edge of the distal end wall. The shape of the via 224 is not specifically any particular shape, even though illustrated in FIGS. 4 and 5 as having a circular or elliptical profile. Any other shape of the profile is possible without departing from the spirit and scope of the invention. For example, an arcuate or a polygonal profile are possible and within the scope of this disclosure. FIGS. 4A and 4B also illustrate the lid 112 (without a lid flap 114 of FIG. 1) integral with the tab 126. FIG. 4C also illustrates the lid 112 with integral the tab 126 such that the tab 126 can be articulated with respect to the lid 112, but is not specifically designed to be removed from the lid 112.

As shown in FIG. 5A, the distal tab 126 may be configured to be moved away from the port 124 with the remainder of the lid 112 remaining in place. The user grasps the distal tab 126, which is heat sealed or otherwise removably affixed to the base 118. Moving the distal tab 126 away from base end wall 134 reveals and opens the port 124, allowing the packaging solution 130 to be released from the well 128. Draining the solution liquid may be performed by tipping the contact lens package to urge the solution through the port by gravitational force. After draining the liquid, the user may then remove the lid 112 by grasping the opening tab 110 of the lid 112 or the optional grasping member 106 to remove the lid from the base to access the contact lens 132, as illustrated in FIG. 5D.

FIGS. 6A-C illustrate optional or alternative features of the contact lens package according to principles described herein. As illustrated in FIG. 4A, on alternative configuration of the drain port 224 is a via through distal end wall 134 of the base 118 spaced away from a lower edge of the distal end wall. The shape of the via 224 is not specifically any particular shape, even though illustrated in FIGS. 6 and 7 as having a circular or elliptical profile. Any other shape of the profile is possible without departing from the spirit and scope of the invention. For example, an arcuate or a polygonal profile are possible and within the scope of this disclosure. FIGS. 6A and 6B also illustrate the lid 112 (without a lid flap 114 of FIG. 1) integral with the tab 126. FIG. 6B illustrates the lid 112, and as illustrated, the tab 126 optionally may be removable from the lid 112, which may be facilitated by perforations 140 to reduce force required for a user to remove or tear away the tab 126 from the lid 112. Other frangible connections may be used in place of the perforation, such as thinned material structure or other frangible connection (not shown)

In an alternate configuration (not shown), the tab 126 may be entirely separate from the lid 112, for example, separately heat sealed over the via 224. FIGS. 1A-D and 2A-D illustrate a lid having a full flap 114 that overlies a distal base end wall 134, but according to principles of the present invention, in an optional configuration, the contact lens package 100 may include a separate removable piece or tab 126 that overlies the drain port 124/224 to prevent leakage of the contact lens packaging solution from the well of the base prior to opening of the drain port 124/224.

FIGS. 7A-7D illustrate operation of the contact lens package of FIGS. 6A-6C. In the illustration of FIGS. 6A-6C, the distal tab 126 is integral to but removable from the lid 112. To access the contact lens, the user grasps the distal tab 126, which is heat sealed or otherwise removably affixed to the base 118. Moving the distal tab 126 away from base end wall 134 reveals and opens the port 124, allowing the packaging solution 130 to be released from the well 128. Referring to FIG. 7B, the user may tear the tab 126 away from the lid 112 so that the lid 112 remains affixed to the base 118, thereby leaving the contact lens cavity fully fluidically sealed from above by the lid even though the drain port 224 has been opened. Draining the solution liquid may be performed by tipping the contact lens package to urge the solution through the port by gravitational force. After draining the liquid, the user may then remove the lid 112 by grasping the opening tab 110 of the lid 112 or the optional grasping member 106 to remove the lid from the base to access the contact lens 132, as illustrated in FIG. 5D. While described herein as having the drain port in a distal end, distal edge or distal wall of the base, the drain port may instead be included in any wall of the base, so long as there is a means for blocking the drain port, such as a removable tab similar to removable tab 126. Referring to FIG. 8A a drain port 124 may be in a side wall 142 of the base 118. Referring to FIG. 8B, a via may be in a side wall 142 of the base 118. As described with respect to previous embodiments of the tab 126, the tab 126 over a drain port/via 124/224 in the side wall may be integral to or removable from the lid 112, e.g. facilitated by perforations, thinned structure or other frangible connection (not shown). The shape of the via 224 is not specifically any particular shape, even though illustrated in FIGS. 8A and 8B as having an arcuate, circular or elliptical profile. Any other shape of the profile is possible without departing from the spirit and scope of the invention. For example, an arcuate or a polygonal profile are possible and within the scope of this disclosure.

Thus, according to principles described herein a contact lens package includes a base having a proximal end and a distal end, a solution well between the proximal end and the distal end, a contact lens support in the solution well, a top opening between the proximal end and the distal end and over the contact lens support, and a port through a wall of the base adjacent the well, the port providing a fluid exit for solution within well. A removable lid overlying the top opening may be removably affixed over the top opening such that a user may remove the lid to access the contact lens. Optionally, the removable lid covers the port to block fluid exit of solution within the well until the removable lid is removed. The wall in which the port is formed may be an end wall at the distal end of the base. In such case, the removable lid may include a lid flap extending over the end wall to cover the port to block fluid exit of solution within the well until the removable lid is removed. The lid flap may be removable in such a way to unblock the port without dislodging the lid over the top opening. In an alternative aspect, the removable lid may include a tab overlying the port to block fluid exit of solution within the well. The tab may be removed without dislodging the lid over the top opening. In another option, the removable tab covers the port, separate from any portion of the lid, to block fluid exit of the solution within the well until the removable tab is removed.

In one optional configuration, the well is formed by a bottom wall of the base, an end wall at the distal end of the cavity and a front wall between a proximal edge of the base and the contact lens support. In an option, the front wall is neither perpendicular to nor parallel to the bottom wall of the well, e.g., may be a slanted portion from the proximal end of the base to the bottom wall of the base. In another option, the front wall is approximately parallel to the end wall to form a cavity that serves as the well cavity. In an option, the port is proximate to an intersection between the end wall and the bottom wall of the base.

In the above-described aspects, the fluidic seal (not shown) may be made of any suitable frangible material suitable for packaging medical devices, including a molded sheet of foil or plastic, laminate films, or plastic. Multilayer films used in conventional contact lens packages may be used, a component of the fluidic seal. Multilayer films comprise a plurality of layers, including barrier layers, including foil layers, or coatings, seal layers, which seal the film to the rest of the package, and may also comprise additional layers selected from peel initiation layers, lamination layers, and layers that improve other package properties like stiffness, temperature resistance, printability, puncture resistance, barrier resistance to water or oxygen and the like. The multilayer films form a steam sterilizable (retortable) seal. The multilayer film can include PET, BON or OPP films layers to increase stiffness and temperature resistance, or to EVOH or PVDC coatings to improve barrier resistance to oxygen or moisture vapor.

The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the described embodiments. However, it will be apparent to one skilled in the art that many of the specific details are not required in order to practice the described embodiments. Thus, the foregoing descriptions of the specific embodiments described herein are presented for the purposes of illustration and description. They are not targeted to be exhaustive or to limit the embodiments to the precise forms disclosed. It will be apparent to one of ordinary skill in the art that many modifications and variations are possible in view of the above teachings.

The Summary and Abstract sections may set forth one or more but not all exemplary embodiments of the present invention as contemplated by the inventors, and thus, are not intended to limit the present invention and the appended claims in any way.

The foregoing description of the specific embodiments will so fully reveal the general nature of the invention that others can, by applying knowledge within the skill of the art, readily modify and/or adapt for various applications such specific embodiments, without undue experimentation, without departing from the general concept of the present invention. Therefore, such adaptations and modifications are intended to be within the meaning and range of equivalents of the disclosed embodiments, based on the teaching and guidance presented herein. It is to be understood that the phraseology or terminology herein is for the purpose of description and not of limitation, such that the terminology or phraseology of the present specification is to be interpreted by the skilled artisan in light of the teachings and guidance. The packages of the present invention may be manufactured using known materials and processes. The packaging materials may be virgin, recycled or a combination thereof. The volume within the package cavity can vary depending on the design selected.

Not all the features described herein need to be incorporated into every package, and those of skill in the art, using the teachings herein, can combine the features to provide a wide variety of improved contact lens packages. In summary, the contact lens packages of the present invention incorporate several novel functionalities which may be combined in a wide variety of combinations as described herein to provide the desired improved packaging. The breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A contact lens package, comprising: a base having: a proximal end and a distal end;a solution well between the proximal end and the distal end;a contact lens support in the solution well;a top opening between the proximal end and the distal end and over the contact lens support;a drain port through a wall of the base adjacent the well, the port providing a fluid exit for solution within the well;a removable lid overlying the top opening; anda movable tab over the drain port.

2. The contact lens package of claim 1, wherein the moveable tab is integral to the removable lid.

3. The contact lens package of claim 1, wherein the movable tab extends from the removable lid and is frangibly connected to the lid.

4. The contact lens package of claim 1, wherein the movable tab is separate from the lid.

5. The contact lens package of claim 1, wherein the movable tab is a flap extending from the lid over the wall of the base to cover the drain port to block fluid exit of solution within the well until the removable lid is removed.

6. The contact lens package of claim 1, wherein the movable tab is a flap extending from the lid over the wall of the base to cover the drain port to block fluid exit of solution within the well, wherein the flap is movable to unblock the port without dislodging the lid over the top opening.

7. The contact lens package of claim 6, wherein the flap is frangibly connected to the lid for removal without dislodging the lid over the top opening.

8. The contact lens package of claim 6, wherein the flap is frangibly connected to the lid for removal without dislodging the lid over the top opening, and wherein the frangible connection between the lid and the flap is provided by a perforation between the lid and the lid flap.

9. The contact lens package of the claim 1, wherein the wall is one of a side wall, end wall or bottom wall of the base.

10. The contact lens package of claim 1, wherein the contact lens support is concave with respect to a bottom of the well.

11. The contact lens package of claim 1, wherein the contact lens support is convex with respect to a bottom of the well.

12. The contact lens package of claim 1, wherein the well comprises a bottom wall of the base, an end wall at the distal end of the cavity and a front wall between a proximal edge of the base and the contact lens support.

13. The contact lens package of claim 12, wherein the port is proximate to an intersection between the end wall and the bottom wall of the base.