Ophthalmological device with adaptable multiple distribution plates

• US 5,681,275 A
• Filed: 01/26/1996
• Issued: 10/28/1997
• Est. Priority Date: 10/07/1988
• Status: Expired due to Term

• Current Assignee: Abdul Mateen Ahmed
• Original Assignee: Abdul Mateen Ahmed
• Inventors: Ahmed, Abdul Mateen
• Primary Examiner(s): RIMELL, SAMUEL G
• Application Number:
  US08/592,466
• Time in Patent Office: 641 Days
• Field of Search: 604/8, 604/9, 604/10, 604/185, 137/510
• US Class Current: 604/9
• CPC Class Codes: A61F 9/00781 Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment drainage implants in general A61M27/002
• CPC Class Codes: A61M 27/002 Implant devices for drainage of body fluids from one part of the body to another intraocular A61F9/00781; middle ear A61F11/202

Abstract

A medical device includes a one-way flow valve in communication with fluid to be drained. The valve is connected to a primary distribution plate which has a raised perimeter with at least one opening in the perimeter. There is a secondary distribution plate having a raised perimeter with at least one opening in the perimeter. At least one pair of plugs, each having a central passageway, are inserted into the openings in the perimeters of the primary and secondary distribution plates, and an connecting tube places the primary and secondary distribution plates in fluid communication with each other. The tube is sized to fit inside the central passageway of the plugs, with the connecting tube having opposed ends, each end inserted to the passageway in the plugs. The distance between the plugs is adjusted by sliding the plugs along the length of the connecting tube.

Claims

1. A medical device for treating a patient suffering from glaucoma where intraocular fluid collects in the intraocular chamber of the eye of a patient elevating the intraocular pressure, including

a valve having a body member holding a pair of overlying elastic membranes in tension to form therebetween a chamber, said membranes providing an elongated, slit-like opening therebetween, which is normally in a closed position and opens when the pressure in the chamber exceeds a predetermined pressure and returns to the closed position when the pressure in the chamber is below said predetermined pressure, and an inlet tube in communication with and connected to the chamber at a point remote from the opening,

a primary distribution plate connected to the valve and adapted to be placed in one selected ocular quadrant of the eye, said primary distribution plate having a raised perimeter with at least one opening in said perimeter,

a secondary distribution plate adapted to be placed in another selected ocular quadrant of the eye and having a raised perimeter with at least one opening in said perimeter,

at least one pair of solid plugs, each one inserted into an opening in the perimeters of the primary and secondary distribution plates, said solid plugs being removable,

at least one pair of secondary plugs, each having a central passageway, said secondary plugs being inserted into the openings in the perimeters of the primary and secondary distribution plates upon the removal of the solid plugs,

an connecting tube sized to fit inside the central passageway of the secondary plugs and inserted in said openings with the distance between the primary and secondary distribution plates being adjusted by positioning the secondary plugs along the length of said connecting tube,

said connecting tube placing the primary and secondary distribution plates in fluid communication with each other.

2. The medical device of claim 1 where the plugs are made of silicone.

3. The medical device of claim 1 where the distribution plates are essentially oval in shape.

4. The medical device of claim 1 where there are a plurality of secondary distribution plates.

5. The medical device of claim 1 where the primary and secondary distribution plates are curved to conform to the shape of the surface of eye.

6. The medical device of claim 1 where the valve is a one-way flow device.

7. The medical device of claim 1 where the secondary plugs have a diameter slightly greater than the diameter of the openings, said secondary plugs being placed in tension prior to being inserted into the opening to elongate said plugs slightly so that upon with the release of the tension the plugs fit snug within the opening to hold the connecting tube firmly.

8. The medical device of claim 1 where the raised perimeters of the primary and secondary plates each have a predetermined thickness and the secondary plugs each have a body member with a stop element at each end thereof, the distance between the stops elements being slightly less than the thickness of the raised perimeters so that the body members are elongated when the secondary plugs are inserted into the openings.

9. A medical device, including

a one-way flow valve in communication with fluid to be drained,

a primary distribution plate affixed to the valve, said primary distribution plate having a raised perimeter with at least one opening in the perimeter,

a secondary distribution plate having a raised perimeter with at least one opening in the perimeter,

at least one pair of plugs, each having a central passageway, one plug being inserted into the openings in the perimeter of the primary distribution plate and the other being inserted into the openings in the perimeter of the secondary distribution plate,

a connecting tube for placing the primary and secondary distribution plates in fluid communication with each other and sized to fit inside the central passageway of the plugs, with said connecting tube having opposed ends, each end inserted to a passageway in said plugs, with the distance between plugs being adjusted by sliding the plugs along the length of said connecting tube.

10. A method for treating glaucoma by draining fluid from the intraocular chamber of a patient'"'"'s eye, including the steps of

(a) providing a medical device including a one-way flow valve attached to a primary distribution plate, said valve having an inlet tube which is placed in communication with the intraocular chamber of the eye so that the fluid drains from the intraocular chamber onto the primary distribution plate under the control of the valve,

(b) providing a secondary distribution plate, said primary and secondary distribution plates each having raised perimeters with openings therein adapted to receive plugs, said openings each having diameters of predetermined dimensions,

(c) positioning the one-way flow valve with the attached primary distribution plate in a selected ocular quadrant of the eye and providing an connecting tube having opposed ends at which are elastic plugs which each have a passageway therein that receives the connecting tube,

(d) positioning the secondary distribution plates in another selected ocular quadrant of the eye and placing the primary distribution plate and the secondary distribution plate in communication with each other through the connecting tube by inserting one plug into the opening in the perimeter of the primary distribution plate and inserting the other plug into the opening in the perimeter of the secondary distribution plate, with the distance between the plates being adjusted to approximately equal the distance between the primary and secondary plates, each plug having a diameter slightly greater than the diameter of the opening in which it is inserted,

(h) stretching the plugs prior to inserting them into the openings and then releasing the plugs after insertion so that the plugs fit snugly in the openings and the diameter of the passageways in the plugs is reduced slightly to hold the connecting tube snugly but not to prevent fluid flow.

11. The method of claim 10 where there are additional secondary distribution plates employed.

12. The method of claim 10 where the secondary plugs have a diameter slightly greater than the diameter of the openings, said secondary plugs being placed in tension prior to being inserted into the opening to elongate said plugs slightly so that upon with the release of the tension the plugs fit snug within the opening to hold the connecting tube firmly.

13. The method of claim 10 where the raised perimeters of the primary ands secondary plates each have a predetermined thickness and the secondary plugs each have a body member with a stop element at each end thereof, the distance between the stops elements being slightly less than the thickness of the raised perimeters so that the body members are elongated when the secondary plugs are inserted into the openings.

14. The method of claim 10 where the connecting tube is positioned above eye muscles.

15. The method of claim 10 where the connecting tube is positioned below eye muscles.

16. The method of claim 10 where the plugs are located in the perimeters of the plates so that they may be selectively removed for either right or left hand access.