Device and Method for Detecting Ophtalmic and/or Brain Diseases

• US 20140016097A1
• Filed: 03/06/2012
• Published: 01/16/2014
• Est. Priority Date: 04/07/2011
• Status: Abandoned Application

• Current Assignee: Sensimed SA (Seed Co., Ltd. /7743/)
• Original Assignee: Sensimed SA (Seed Co., Ltd. /7743/)
• Inventors: Wismer, Jean-Marc, Cerboni, Sacha, Leonardi, Matteo, Schlund, Mario
• Application Number:
  US14/003,124
• Publication Number:
  US 20140016097A1
• Time in Patent Office: Days
• US Class Current: 351/209
• CPC Class Codes: A61B 3/0041 characterised by display arrangements
• CPC Class Codes: A61B 3/10 Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
• CPC Class Codes: A61B 3/113 for determining or recording eye movement
• CPC Class Codes: A61B 3/16 for measuring intraocular pressure, e.g. tonometers
• CPC Class Codes: A61B 5/6821 Eye

Abstract

System for monitoring at least one biomechanical ophthalmic parameter, the system comprising a measuring device (1) adapted to be placed on or implanted into an eye of a patient for measuring said at least one biomechanical ophthalmic parameter of said eye, a recording device (6) for obtaining from said measuring device (1) measurement data representative of the instant value of said at least one biomechanical ophthalmic parameter of said eye, wherein said recording device is adapted to obtain said measurement data at a predetermined frequency equal to or greater than twice the variation frequency of said at least one biomechanical ophthalmic parameter. Method comprising monitoring at least one biomechanical ophthalmic parameter of an eye of a patient using a measuring device (1) adapted to be placed on or implanted into an eye of a patient for measuring the at least one biomechanical ophthalmic parameter of the eye, obtaining from the measuring device (1) a plurality of measurement data representative of the value the at least one biomechanical ophthalmic parameter of the eye measured at a predetermined frequency, wherein the predetermined frequency is equal or greater than twice the variation frequency of the at least one biomechanical ophthalmic parameter, at least partly automatically analyzing the plurality of measurement data in order to determine an ophthalmic condition of the eye.

Claims

1. System for monitoring at least one biomechanical ophthalmic parameter, said system comprising:

a measuring device (1) adapted to be placed on or implanted into an eye of a patient for measuring said at least one biomechanical ophthalmic parameter of said eye;

a recording device (6) for obtaining from said measuring device (1) measurement data representative of the instant value of said at least one biomechanical ophthalmic parameter of said eye;

wherein said recording device is adapted to obtain said measurement data at a predetermined frequency equal to or greater than twice the variation frequency of said at least one biomechanical ophthalmic parameter.

2. System according to claim 1, wherein said predetermined frequency is equal or greater than 10 Hz.

3. Method comprising:

monitoring at least one biomechanical ophthalmic parameter of an eye of a patient using a measuring device (1) adapted to be placed on or implanted into an eye of a patient for measuring said at least one biomechanical ophthalmic parameter of said eye;

obtaining from said measuring device (1) a plurality of measurement data representative of the value said at least one biomechanical ophthalmic parameter of said eye measured at a predetermined frequency, wherein said predetermined frequency is equal or greater than twice the variation frequency of said at least one biomechanical ophthalmic parameter;

at least partly automatically analyzing said plurality of measurement data in order to determine an ophthalmic condition of said eye.

4. Method according to claim 3, further comprising at least partly automatically ascertaining a correspondence of said ophthalmic condition to an identification of an ophthalmic disease.

5. Method according to claim 3, wherein said monitoring is performed during at least 24 hours in order to obtain at least one circadian or nycthemeral profile of said at least one biomechanical ophthalmic parameter.

6. Method according to claim 3, wherein said determination of an ophthalmic condition of said eye comprises diagnosing an ophthalmic pathology.

7. Method according to claim 3, further comprising comparing said ophthalmic condition of said eye with a previously determined ophthalmic condition of said eye in order to determine an evolution of said ophthalmic condition.

8. Method according to claim 7, further comprising adjusting a medical treatment on the basis of said evolution.

9. Method according to claim 3, wherein the plurality of measured data are displayed as a two-dimensional shape that graphically depicts the variations of said at least one biomechanical ophthalmic parameter over time.

10. Method according to claim 9, wherein the two-dimensional shape comprises:

a first portion representing a peak and a vertical variation of the at least one biomechanical ophthalmic parameter; and

a second portion representing a settling time of the at least one biomechanical ophthalmic parameter.

11. Method according to claim 10, wherein a magnitude of the vertical variation of the biomechanical ophthalmic parameter comprises a percentage of the peak.

12. Method according claim 10, wherein a magnitude of the vertical variation of the biomechanical ophthalmic parameter comprises an absolute value.

13. Method according to claim 3, wherein variations of the at least one biomechanical ophthalmic parameter are caused by the natural eyeblink of the eye.

14. Method according to claim 3, wherein variations of the at least one biomechanical ophthalmic parameter are caused by a specific activity of said patient.

15. Method according to claim 3, wherein variations of the at least one biomechanical ophthalmic parameter are caused by a substance externally or internally applied to said patient.

16. Method according to claim 3, wherein the at least one biomechanical ophthalmic parameter comprises deformation of the eye.

17. Method according to claim 3, wherein the at least one biomechanical ophthalmic parameter comprises the intraocular pressure.

18. Method according to claim 3, wherein the at least one biomechanical ophthalmic parameter comprises the position of the eye.

19. Method according to claim 3, wherein the measuring device (1) comprises a sensor (2) embedded in a support (3) in the form of a contact lens.

20. Method according to claim 3, wherein the measuring device (1) comprises a sensor (2) embedded in a support (3) adapted to be implanted into said eye.

21. Method according to claim 3, comprising:

continuously monitoring said at least one biomechanical ophthalmic parameter during a sleep period;

outputting a plurality of measured data from said measuring device (1) determined from a pulsation pattern of intraocular pressure; and

determining a correspondence of an amplitude of the pulsation, a frequency of the pulsation and a duration of the pulsation to an identification of an ophthalmic and/or brain disease.

22. Method according to claim 3, wherein said predetermined frequency is equal or greater than 10 Hz.

23. Method according to claim 3, wherein continuously monitoring comprises measuring said at least one biomechanical ophthalmic parameter at said predetermined frequency during limited measuring periods that are repeated during a time cycle.

24. Method according to claim 23, wherein said limited measuring periods last thirty seconds and are repeated every 5 minutes within a time cycle.

25. Method according to claim 23, wherein said limited measuring periods are repeated upon triggering.

26. Method according to claim 3, wherein analyzing said plurality of measured data comprises measuring a strength value of the eyeblinks and a frequency of the eyeblinks over predetermined periods of time.

27. Method according to claim 3, wherein continuously monitoring comprises continuously monitoring the activity of eyeblinks of the patient over a 24-hour monitoring period of time including wake periods and sleep periods.

28. Method according to claim 27, further comprising determining a duration of the sleep periods and wake periods, and determining a number of eyeblinks that occur during the sleep periods.

29. Method according to claim 28, further comprising determining a duration of the sleep periods and wake periods, and determining the duration of rapid eye movement (REM) that occurs during the sleep periods and the wake periods.

30. Method according to claim 29, further comprising determining a number of REM episodes that occur during the sleeping period.

31. Method according to claim 3, wherein said step of continuously monitoring extends from a first instant before a particular event to a second instant after said particular event, and wherein said step of analysing comprises determining a scheme of a variation of said at least one parameter due to said particular event.

32. Method according to claim 3, further comprising the step of detecting and/or diagnosing brain diseases on the basis of said determined ophthalmic condition of said eye.

33. Method according to claim 32, wherein said brain diseases comprise headaches or intracranial hypertension.