Device and method for delivering solid medication to an eye

• US 4,338,936 A
• Filed: 10/27/1980
• Issued: 07/13/1982
• Est. Priority Date: 10/27/1980
• Status: Expired due to Term

• Current Assignee: Byron Nelson
• Original Assignee: Byron Nelson
• Inventors: Nelson, Byron
• Primary Examiner(s): Recla, Henry J.
• Application Number:
  US06/201,180
• Time in Patent Office: 624 Days
• Field of Search: 128/265, 128/266, 128/203.15, 128/231, 128/232, 128/249
• US Class Current: 604/295
• CPC Class Codes: A61F 9/0008 Introducing ophthalmic products into the ocular cavity or retaining products therein putting in contact lenses A61F9/0061; introducing or retaining media in cavities of the body in general A61M31/00

Abstract

A device for delivering finely divided solid medication to any eye which uses a flexible container having an air chamber and an opening leading to the air chamber. An element holds a predetermined dose of the finely divided solid medication. A filter provides a solid barrier to the interior of the air chamber and separates the finely divided material from the same. The airborne medication is directed to the proper portion of the eye.

Claims

1. A device for delivering finely divided solid medication to an eye comprising:

a. a flexible container having an air chamber therewithin and an opening, communicating with said air chamber for passage of air to and from said chamber;

b. means adapted for directing air from said air chamber to the eye comprising a hollow member having a first opening communicating the interior thereof with said air chamber and an opening second opening adapted for placement adjacent the eye;

c. means intended for holding a predetermined dose of the finely divided solid medication in the path of the air leaving said chamber through said directing means before arrival of the air at the eye;

d. filter means intended for preventing the finely divided solid medication from entering the air chamber of the flexible container, said filter means defining an extremity of said air chamber, said filter means being located in said hollow member, said hollow member including an enlargement for holding said filter means.

2. The device of claim 1 in which said hollow member comprises a flexible elongated member.

3. The device of claim 1 in which said means for holding a predetermined dose of the finely divided solid medication in the path of the air leaving the chamber comprises said filter means including a surface having an affinity for the finely divided powder, said surface being located outside the air chamber extremity defined by said filter means.

4. A method of delivering finely divided solid medication to an eye comprising the steps of:

a. filling a chamber in a container with air, said container having an opening communicating with said chamber;

b. placing the first side of a filter having a first and second side adjacent said opening in said container to form a solids barrier to said air chamber, said second side of said filter including means for holding a predetermined dose of finely divided solid medication thereto;

c. placing a predetermined dose of the finely divided solid medication on the second side of said filter;

d. simultaneously evacuating at least a portion of the air from said chamber through said opening with a certain velocity, and directing the evacuated air through said filter, and carrying at least a portion of the finely divided solid medication in the moving air which has passed through said filter;

e. directing said air carried solid medication to the eye.

5. The method of claim 4 in which said step of filling a chamber in a container includes filling a chamber in a flexible container, and said step of evacuating at least a portion of the air from said chamber, includes squeezing said flexible container to cause said evacuation of air from said chamber.