Intraocular Pressure Monitoring Device

• US 20100234717A1
• Filed: 04/19/2010
• Published: 09/16/2010
• Est. Priority Date: 10/19/2007
• Status: Abandoned Application

• Current Assignee: Sensimed AG (Seed Co., Ltd. /7743/)
• Original Assignee: Sensimed AG (Seed Co., Ltd. /7743/)
• Inventors: Wismer, Jean-Marc
• Application Number:
  US12/762,597
• Publication Number:
  US 20100234717A1
• Time in Patent Office: Days
• US Class Current: 600/398
• CPC Class Codes: A61B 2562/028 Microscale sensors, e.g. electromechanical sensors [MEMS]
• CPC Class Codes: A61B 3/16 for measuring intraocular pressure, e.g. tonometers

Abstract

An intraocular pressure monitoring device comprises a soft contact lens (1) such as a silicone contact lens and an active strain gage (2) fixed to the contact lens (1), the active strain gage (2) being placed at a distance from the center (C) of the contact lens and being not in direct contact with the eye, wherein the active strain gage comprises a polygonal portion situated around the center (C) of the contact lens.

Claims

1. An intraocular pressure monitoring device comprising a soft contact lens and an active strain gage fixed to said contact lens, said active strain gage being placed at a distance from the center of the contact lens and being not in direct contact with the eye, wherein said active strain gage comprises a polygonal portion situated around said center of the contact lens.

2. The intraocular pressure monitoring device of claim 1, wherein said active strain gage is made of a resistive material, such as a metal or an alloy.

3. The intraocular pressure monitoring device of claim 1, wherein said active strain gage is a continuous element.

4. The intraocular pressure monitoring device of claim 3, wherein said continuous element is placed in such a way that several polygonal portions are disposed parallel to each other.

5. The intraocular pressure monitoring device of claim 1, further comprising a passive strain gage placed on said contact lens.

6. The intraocular pressure monitoring device of claim 5, wherein said passive strain gage comprises several rectilinear portions radially arranged on said contact lens.

7. The intraocular pressure monitoring device of claim 1, wherein said active strain gage is shaped in order to be placed on the corneosclera junction.

8. The intraocular pressure monitoring device of claim 1, including a wireless telemetry system for data transmission with said strain gage.

9. The intraocular pressure monitoring device of claim 1, wherein said active strain gage is microfabricated.

10. The intraocular pressure monitoring device of claim 1, wherein said active strain gage is a wire.

11. The intraocular pressure monitoring device of claim 1, wherein said contact lens further comprises other measuring devices such as an ElectroRetinoGraph or a chemical analysis sensor.

12. The intraocular pressure monitoring device of claim 1, wherein it comprises several active gages.

13. The intraocular pressure monitoring device of claim 1, wherein it comprises several passive gages.

14. The intraocular pressure monitoring device of claim 1, wherein it comprise four gages in a Wheatstone bridge configuration, such as two active gages and two passives gages being placed alternatively on the bridge.

15. The intraocular pressure monitoring device of claim 1, wherein said soft contact lens is a silicone contact lens.

16. An intraocular pressure monitoring device comprising a soft contact lens and an active strain gage fixed to said contact lens, said active strain gage being placed at a distance from the center of the contact lens and being not in direct contact with the eye, wherein said active strain gage comprises a series of straight segments continuously connected circumferentially about said center of the contact lens.

17. The intraocular pressure monitoring device of claim 16, wherein said active strain gage is made of a resistive material, such as a metal or an alloy.

18. The intraocular pressure monitoring device of claim 16, further comprising a passive strain gage placed on said contact lens.

19. The intraocular pressure monitoring device of claim 18, wherein said passive strain gage comprises several rectilinear portions radially arranged on said contact lens.

20. The intraocular pressure monitoring device of claim 16, wherein said active strain gage is shaped in order to be placed on the corneosclera junction.

21. The intraocular pressure monitoring device of claim 16, including a wireless telemetry system for data transmission with said strain gage.

22. The intraocular pressure monitoring device of claim 16, wherein said active strain gage is microfabricated.

23. The intraocular pressure monitoring device of claim 16, wherein said active strain gage is a wire.

24. The intraocular pressure monitoring device of claim 16, wherein said contact lens further comprises other measuring devices such as an ElectroRetinoGraph or a chemical analysis sensor.

25. The intraocular pressure monitoring device of claim 16, wherein it comprises several active gages.

26. The intraocular pressure monitoring device of claim 16, wherein it comprises several passive gages.

27. The intraocular pressure monitoring device of claim 16, wherein it comprise four gages in a Wheatstone bridge configuration, such as two active gages and two passives gages being placed alternatively on the bridge.

28. The intraocular pressure monitoring device of claim 16, wherein said soft contact lens is a silicone contact lens.

29. An intraocular pressure monitoring system comprising:

a soft contact lens with a pressure sensor comprising;

an active strain gage fixed to said contact lens, said active strain gage being placed at a distance from the center of the contact lens and being not in direct contact with the eye, wherein said active strain gage comprises a series of straight segments continuously connected circumferentially about said center of the contact lens, and

a data transmission system connected to said strain gage;

a mobile interrogation unit for communicating with the data transmission system.

30. The intraocular pressure monitoring system of claim 29, wherein said data transmission system comprises a transponder and a loop antenna for wirelessly communicating with said mobile interrogation unit.

31. The intraocular pressure monitoring system of claim 29, further comprising a stationary data for storing and/or displaying data received from said mobile interrogation unit.

32. The intraocular pressure monitoring system of claim 29, wherein said mobile interrogation unit is configured for providing said sensor with energy.

33. The intraocular pressure monitoring system of claim 29, wherein said soft contact lens is a silicone contact lens.

34. The intraocular pressure monitoring system of claim 29 in a single package as a kit.