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Punctal plug with active agent

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Punctal plug with active agent


A punctal plug for insertion through a punctal aperture of an eye. The punctal plug includes a stem configured to be inserted into the punctal aperture and along a canaliculus of the eye, a stopper connected to one end of the stem, the stopper configured to seat against the punctal aperture, and a topical prostaglandin. The stem and the stopper are made from a porous or absorbent material, and wherein the material is saturated with the topical prostaglandin.

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Inventors: Steven A. Odrich, Liane C. Glazer
USPTO Applicaton #: #20120277694 - Class: 604294 (USPTO) - 11/01/12 - Class 604 
Surgery > Means For Introducing Or Removing Material From Body For Therapeutic Purposes (e.g., Medicating, Irrigating, Aspirating, Etc.) >Treating Material Applied To Or Removed From External Surface Of Body, Or Cutaneous Layer Of Skin (e.g., Eye Treatment, Removal Of Skin Impurities, Etc.) >Means For Treating Eye Or Surface Of Ocular Cavity

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The Patent Description & Claims data below is from USPTO Patent Application 20120277694, Punctal plug with active agent.

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CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application of U.S. patent application Ser. No. 12/604,202, filed Oct. 22, 2009, which is a divisional application of U.S. patent application Ser. No. 10/825,047, filed Apr. 15, 2004, the contents of both of which are incorporated herein by reference in their entireties.

FIELD

The present invention relates generally to a punctal plug with an active agent.

BACKGROUND OF THE INVENTION

Punctal plugs are known which are made in suitable dimensions and of suitable materials to be removably inserted into the upper and/or lower punctal apertures or punctum of the eye, to block the opening and the canaliculus communicating therewith, to prevent drainage of lacrimal fluid (tears). Such plugs are known to be made of suitable materials, such as polymers, for example polytetrafluorethylene (known by the trademark TEFLON), or hydroxyethylmethacrylate (HEMA), hydrophilic polymer, methyl methacrylate, or silicon, or even of stainless steel or other inert metal material.

It is also known to apply an active agent such as nicotine or a birth control drug, to the inner surface of a patch which can be worn against the skin of a subject for transdermally administering the active agent to the subject.

the field of medicine, and in particular to a new and useful method and apparatus for administering an active agent, i.e. a medicine or medication, to a subject by transdermal or other surface absorption of the agent into the tissues in and around one or both eyes of the subject.

SUMMARY

OF THE INVENTION

It is an aspect of the present invention to provide a method and an apparatus for administering an active agent to a subject by applying the active agent to at least one surface of an ocular implant such as a punctal plug, and installing the implant, e.g. inserting the punctal plug into a punctal aperture of the subject.

Embodiments of the invention are generally related to the field of medicine, and in particular to a new and useful method and apparatus for administering an active agent, i.e. a medicine or medication, to a subject by transdermal or other surface absorption of the agent into the tissues in and around one or both eyes of the subject.

If the active agent or drug is meant for treating the tissues at the walls of the canaliculus, for example, the drug is applied only to inner surfaces of the plug that are adapted to be in contact with or near the tissues of the canaliculus. The presence of tears is highly advantageous as a natural vehicle or carrier for the agent.

If the active agent or drug is meant for treating the eye itself, the drug is applied only to outer surfaces of the implant or plug that are adapted to be outside the canaliculus. Here the presence of previously secreted tears or a tear pool is again advantageous as a natural vehicle or carrier for the agent.

Any or all surfaces of the implant may carry the active agent there the desire is simply to have the agent enter the subjects blood stream via the tissues in and around the eye.

The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated.

BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings, which are not necessarily drawn to scale, like numerals describe similar components throughout the several views. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed in this patent document.

FIG. 1 is a schematic perspective view of an ocular implant in the form of a punctal plug according to the present invention; and

FIG. 2 is a perspective view of the area around the eye with other embodiments of the invention.

DETAILED DESCRIPTION



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Previous Patent Application:
Method and apparatus for improving the appearance of nails affected by onychomycosis through the topical application of an aqueous solution containing boric acid and camphor or other terpenes
Next Patent Application:
Transdermal delivery patch
Industry Class:
Surgery
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stats Patent Info
Application #
US 20120277694 A1
Publish Date
11/01/2012
Document #
13533676
File Date
06/26/2012
USPTO Class
604294
Other USPTO Classes
International Class
/
Drawings
3



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