Intraocular pressure monitoring/measuring apparatus and method

• US 6,712,764 B2
• Filed: 08/07/2001
• Issued: 03/30/2004
• Est. Priority Date: 02/08/1999
• Status: Expired due to Term

• Current Assignee: Lee Birchansky, Robert E. Jeffries
• Original Assignee: Lee Birchansky, Robert E. Jeffries
• Inventors: Birchansky, Lee, Jeffries, Robert E.
• Primary Examiner(s): MARMOR II, CHARLES ALAN
• Application Number:
  US09/924,126
• Publication Number:
  US 20020052544A1
• Time in Patent Office: 966 Days
• Field of Search: 600/383, 600/398, 600/399, 600/400, 600/402, 600/547, 600/552, 600/561, 600/587, 623/4, 623/4.1, 623/6, 623/6.11
• US Class Current: 600/398
• CPC Class Codes: A61B 3/16 for measuring intraocular pressure, e.g. tonometers
• 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: G01L 9/002 Optical excitation or measuring

Abstract

An apparatus and method of monitoring/measuring intraocular pressure in an eye includes a miniature pressure sensor having an attachment for connecting the miniature pressure sensor to the iris of the eye or an intraocular lens. The miniature pressure sensor is preferably a Polysilicon Resonant Transducer (PRT).

Claims

1. An apparatus capable of monitoring intraocular pressure in an eye having an internal tissue, comprising:

an optic energy source disposed external to the eye; and

an optically resonate pressure sensor having an attachment for connecting the pressure sensor to the internal tissue of the eye, wherein upon activating the pressure sensor by the optic energy source, the pressure sensor monitoring/measuring the intraocular pressure in the eye.

2. The apparatus of claim 1, wherein the energy source is a laser source.

3. The apparatus of claim 1, further comprising an intraocular lens, wherein the pressure sensor is incorporated into the intraocular lens.

4. An apparatus capable of monitoring intraocular pressure in an eye having internal tissue, comprising an optically resonate integrated circuit pressure sensor and an attachment adapted to connect the pressure sensor to the internal tissue of the eye.

5. The apparatus of claim 4, wherein the pressure sensor is encased in a material biocompatible to the eye.

6. The apparatus of claim 5, wherein the attachment includes a sensor encasement with holes therethrough for suturing the apparatus onto the internal tissue of the eye.

7. The apparatus of claim 5, wherein the attachment is a clamp for holding the pressure sensor onto the internal tissue of the eye.

8. The apparatus of claim 5, wherein the attachment is a prolene barb for attaching on the iris.

9. The apparatus of claim 5, wherein the pressure sensor is encased in the material made of silicone.

10. The apparatus of claim 5, wherein the pressure sensor is encased in the material made of polymethylmethacrylate (PMMA).

11. The apparatus of claim 5, wherein the pressure sensor is encased in the material made of acrylic polymer.

12. The apparatus of claim 4, wherein the pressure sensor includes polysilicon.

13. The apparatus of claim 4, further comprising an intraocular lens, wherein the pressure sensor is incorporated into the intraocular lens.

14. The apparatus of claim 4, wherein the pressure sensor is small enough to allow implant into the eye without impeding eye function.

15. The apparatus of claim 4 wherein the pressure sensor is a passive, miniature electronic circuit having a sensor component for interaction with optic energy and a pressure detector component for affecting circuit response.

16. A method of monitoring intraocular pressure in an eye having an internal tissue, comprising:

attaching a laser resonate integrated circuit pressure sensor to the internal tissue of the eye;

irradiating a laser light onto the pressure sensor; and

sensing intraocular pressure in the eye.

17. The method of claim 16, wherein the attaching of the pressure sensor is accomplished by suturing.

18. The method of claim 16, wherein the attaching of the pressure sensor is accomplished by clamping.

19. The method of claim 16, wherein the attaching pressure sensor is accomplished by using a prolene barb.

20. The method of claim 16, further comprising implanting an intraocular lens in the eye, wherein the pressure sensor is a stand-alone device separate from the intraocular lens.

21. The method of claim 16, further comprising implanting an intraocular lens in the eye, wherein the pressure sensor is a part of the implanted intraocular lens.