Ring-shaped device

Patent metadata

Field	Value
Publication number	US-9486362-B2
Application number	US-200913146614-A
Country	US
Kind code	B2
Filing date	Dec 25, 2009
Priority date	Feb 10, 2009
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

The present invention aims to provide a ring-shaped device superior in the wearing comfort and intraocular stability while being worn on the eye.
Provided is a ring-shaped device to be worn on the scleral surface, which is characterized in that it has an opening to expose the cornea and an intermediate portion between an inner edge portion and an outer edge portion has a maximum thickness.

First claim

The invention claimed is:

1. A device to be worn on a scleral surface,
wherein the device is made of a curved thin film having a ring shape, and the device has an opening to expose a cornea,
wherein one surface of the curved thin film forms a concave surface and another surface of the curved thin film forms a convex surface, and the concave surface and the convex surface have different curvatures,
wherein the curved thin film has an intermediate portion between an inner edge portion and an outer edge portion,
wherein the intermediate portion has a minimum thickness and a maximum thickness, and
wherein the inner edge portion has a thickness within the range of 0.05-0.3 mm, the outer edge portion has a thickness within the range of 0.05-0.3 mm, the intermediate portion has a thickness within the range of 0.08-0.4 mm, the minimum thickness of the intermediate portion is not less than the thickness of the inner edge portion and is not less than the thickness of the outer edge portion, and the maximum thickness of the intermediate portion is greater by 0.03 mm or more than both the thickness of the inner edge portion and the thickness of the outer edge portion.

2. The device according to claim 1 , wherein the inner edge portion has a thickness within the range of 0.1-0.3 mm, the outer edge portion has a thickness within the range of 0.15-0.3 mm, and the intermediate portion has a thickness within the range of 0.2-0.4 mm.

3. A device comprising a drug,
wherein the device is to be worn on a scleral surface,
wherein the device is made of a curved thin film having a ring shape, and the device has an opening to expose a cornea,
wherein one surface of the curved thin film forms a concave surface and another surface of the curved thin film forms a convex surface, and the concave surface and the convex surface have different curvatures,
wherein the curved thin film has an intermediate portion between an inner edge portion and an outer edge portion,
wherein the intermediate portion has a maximum thickness,
wherein the inner edge portion has a thickness within the range of 0.05-0.3 mm, the outer edge portion has a thickness within the range of 0.05-0.3 mm, the intermediate portion has a thickness within the range of 0.08-0.4 mm, the minimum thickness of the intermediate portion is not less than the thickness of the inner edge portion and is not less than the thickness of the outer edge portion, and the maximum thickness of the intermediate portion is greater by 0.03 mm or more than both the thickness of the inner edge portion and the thickness of the outer edge portion, and
wherein the curved thin film is impregnated with the drug.

4. The device according to claim 3 , wherein the inner edge portion has a thickness within the range of 0.1-0.3 mm, the outer edge portion has a thickness within the range of 0.15-0.3 mm, and the intermediate portion has a thickness within the range of 0.2-0.4 mm.

5. A method of delivering a drug to posterior ocular tissues, comprising applying the device according to claim 3 on the scleral surface to transfer the drug contained in the device to posterior ocular tissues.

6. The device according to claim 3 , wherein the drug is a therapeutic agent for a posterior ocular tissue disease.

Assignees

• Shikamura Yuko
• Sato Takao
• Matsunaga Toru
• Yamazaki Yoshiko
• Fukushima Tsutomu
• Senju Pharma Co
• Seed Co Ltd

Inventors

• Shikamura Yuko
• Sato Takao
• Matsunaga Toru
• Yamazaki Yoshiko
• Fukushima Tsutomu

Classifications

• A61K31/5383

  ortho- or peri-condensed with heterocyclic ring systems · CPC title

• A61F9/0017 Primary

  implantable in, or in contact with, the eye, e.g. ocular inserts · CPC title

• A61F9/04 Primary

  Eye-masks {; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing} · CPC title

• A61M35/00

  Devices for applying media, e.g. remedies, on the human body (devices for handling toiletry or cosmetic substances A45D; absorbent pads, e.g. swabs, A61F13/15) · CPC title

• G02C7/04

  Contact lenses for the eyes (disinfection or sterilisation of contact lenses A61L12/00) · CPC title