Portable device for cervical inspection comprising groups of light-emitting diodes

• US 9,155,458 B2
• Filed: 05/18/2011
• Issued: 10/13/2015
• Est. Priority Date: 05/18/2010
• Status: Active Grant

• Current Assignee: Gynius Plus AB
• Original Assignee: Gynius AB
• Inventors: Shemer, Isaac, Wikstrom Shemer, Elisabeth, Volsky, Matthew
• Primary Examiner(s): Robert, Eduardo C
• Assistant Examiner(s): HARVEY, JULIANNA NANCY
• Application Number:
  US13/698,983
• Publication Number:
  US 20130066165A1
• Time in Patent Office: 1,609 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 1/0607 for annular illumination
• CPC Class Codes: A61B 1/0638 providing two or more wavelengths
• CPC Class Codes: A61B 1/0655 Control therefor
• CPC Class Codes: A61B 1/0676 at distal tip of an endoscope
• CPC Class Codes: A61B 1/0684 using light emitting diodes [LED]
• CPC Class Codes: A61B 1/303 for the vagina, i.e. vaginoscopes
• CPC Class Codes: A61B 5/0084 for introduction into the body, e.g. by catheters A61B5/1459 takes precedence
• CPC Class Codes: A61B 5/4331 of the cervix A61B5/435 takes precedence

Abstract

A portable device for cervical inspection, comprising a plurality of light-emitting diodes comprising a first light-emitting diode group and a second light-emitting diode group, wherein the first light-emitting diode group emits light within a first wavelength range upon operation, and the second light-emitting diode group emits light within a second wavelength range upon operation, wherein the first wavelength range comprises a sub-range of wavelengths shorter than the wavelengths of the second wavelength range, and the second wavelength range comprises a sub-range of wavelengths longer than the wavelengths of the first wavelength range, the portable device further comprising a controller provided for a control of the luminous intensity of the second light-emitting diode group from a first intensity to a second intensity, lower than the first intensity, such that a preferred color rendering for the visual examination of the cervix may be provided.

Claims

1. A portable device for inspection of a portion of a body comprising:

an elongated housing having a first end, a second end, and an optical axis that extends from the first end to the second end that allows viewing through the elongated housing;

a magnification element that lies in the optical axis, wherein said magnification element is configured to provide a magnified view of a portion of a body to an observer observing the portion of the body with the portable device;

a plurality of light-emitting diodes located at the second end and configured to illuminate the portion of the body, the plurality of light-emitting diodes comprising a first light-emitting diode group and a second light-emitting diode group, wherein

the first light-emitting diode group emits light within a first wavelength range upon operation, wherein the light is continuous at least within 425-625 nm, and the second light-emitting diode group emits light within a second wavelength range upon operation, wherein

the first wavelength range comprises a sub-range of wavelengths shorter than the second wavelength range,

the second wavelength range comprises a second sub-range of wavelengths longer than the first wavelength range, and

the first light-emitting diode group comprises three light-emitting diodes and the second light-emitting diode group comprises one light-emitting diode,

wherein the three light-emitting diodes of the first light-emitting diode group have peak wavelengths of about 470 nm, 510 nm and 555 nm, respectively, and

wherein the light-emitting diode of the second light-emitting diode group has a peak wavelength of about 660 nm; and

a controller provided configured to control a luminous intensity of the second light-emitting diode group from a first intensity to a second intensity that is lower than the first intensity, to provide a preferred color rendering for visual examination of the portion of the body.

2. The portable device as claimed in claim 1, wherein white light is generated by the portable device during operation when the first intensity of the second light-emitting diode group is used.

3. The portable device as claimed in claim 1, wherein the second intensity of the second light-emitting diode group is selected from 0-40%, 5-35%, 10-30%, 15-25%, or about 20% of the luminous intensity of the first luminous intensity.

4. The portable device as claimed in claim 1, wherein the first wavelength range is within 400-650 nm, or within 425-625 nm, and the second wavelength range is within 580-700 nm, or within 600-670 nm.

5. The portable device as claimed in claim 4, wherein a range for at least one peak of the light within the first wavelength range is 425-625 nm, or 450-575 nm and the range for the at least one peak of the light within the second wavelength range is 600-670 nm, or 620-670 nm.

6. The portable device as claimed in claim 1, wherein luminous intensity of the second diode of the first light-emitting diode group is about 50% higher than the luminous intensity of the first diode of the first light-emitting diode group, and the luminous intensity of the third diode of the first light-emitting diode group is about 25% higher than the luminous intensity of the first diode of the first light-emitting diode group.

7. The portable device as claimed in claim 1, further comprising at least one collimating element.

8. The portable device as claimed in claim 1, further comprising at least one optical fiber such that the light from the first light-emitting diode group and the light from the second light-emitting diode group is guided through the at least one optical fiber.

9. The portable device as claimed in claim 1, further comprising at least one polarization element.

10. The portable device as claimed in claim 1, further comprising at least one display element configured to display a view of a cervix.

11. The portable device as claimed in claim 1, further comprising at least one registration element configured to register a view of a cervix.

12. The portable device as claimed in claim 1, further comprising at least one optical element configured to increase a thickness of a focal plane of the portable device.

13. The portable device as claimed in claim 1, wherein said portion of said body is a cervix.

14. The portable device as claimed in claim 1, wherein said portion of said body is a body cavity.

15. The portable device as claimed in claim 1, wherein said portion of said body is tissue.

16. A portable device for inspection of a portion of a body comprising:

an elongated housing having a first end, a second end, and an optical axis that extends from the first end to the second end that allows viewing through the elongated housing;

a magnification element that lies in the optical axis, wherein said magnification element is configured to provide a magnified view of a portion of a body to an observer observing the portion of the body with the portable device;

a plurality of light-emitting diodes located at the second end and configured to illuminate the portion of the body, the plurality of light-emitting diodes comprising a first light-emitting diode group and a second light-emitting diode group, wherein

the first light-emitting diode group emits light within a first wavelength range upon operation, wherein the light is continuous at least within 425-625 nm, and the second light-emitting diode group emits light within a second wavelength range upon operation, wherein

the first wavelength range comprises a sub-range of wavelengths shorter than the second wavelength range,

the second wavelength range comprises a second sub-range of wavelengths longer than the first wavelength range, and

the first light-emitting diode group comprises four light-emitting diodes and the second light-emitting diode group comprises one light-emitting diode,

wherein the four light-emitting diodes of the first light-emitting diode group have peak wavelengths of about 470 nm, 505 nm, 525 nm and 555 nm, and

wherein the light-emitting diode of the second light-emitting diode group has a peak wavelength of about 625 nm; and

,

a controller provided configured to control a luminous intensity of the second light-emitting diode group from a first intensity to a second intensity that is lower than the first intensity, to provide a preferred color rendering for visual examination of the portion of the body.

17. The portable device as claimed in claim 16, wherein luminous intensity of the second diode of the first light-emitting diode group is about 50% lower than the luminous intensity of the first diode of the first light-emitting diode group, the luminous intensity of the third diode of the first light-emitting diode group is about 50% lower than the luminous intensity of the first diode of the first light-emitting diode group, and the luminous intensity of the fourth diode of the first light-emitting diode group is about the same as the luminous intensity of the first diode of the first light-emitting diode group.

18. The portable device as claimed in claim 16, wherein white light is generated by the portable device during operation when the first intensity of the second light-emitting diode group is used.

19. The portable device as claimed in claim 16, wherein the second intensity of the second light-emitting diode group is selected from 0-40%, 5-35%, 10-30%, 15-25%, or about 20% of the luminous intensity of the first luminous intensity.

20. The portable device as claimed in claim 16, wherein the first wavelength range is within 400-650 nm, or within 425-625 nm, and the second wavelength range is within 580-700 nm, or within 600-670 nm.

21. The portable device as claimed in claim 20, wherein a range for at least one peak of the light within the first wavelength range is 425-625 nm, or 450-575 nm and the range for the at least one peak of the light within the second wavelength range is 600-670 nm, or 620-670 nm.

22. The portable device as claimed in claim 16, further comprising at least one collimating element.

23. The portable device as claimed in claim 16, further comprising at least one optical fiber such that the light from the first light-emitting diode group and the light from the second light-emitting diode group is guided through the at least one optical fiber.

24. The portable device as claimed in claim 16, further comprising at least one polarization element.

25. The portable device as claimed in claim 16, further comprising at least one display element configured to display a view of a cervix.

26. The portable device as claimed in claim 16, further comprising at least one registration element configured to register a view of a cervix.

27. The portable device as claimed in claim 16, further comprising at least one optical element configured to increase a thickness of a focal plane of the portable device.

28. The portable device as claimed in claim 16, wherein said portion of said body is a cervix.

29. The portable device as claimed in claim 16, wherein said portion of said body is a body cavity.

30. The portable device as claimed in claim 16, wherein said portion of said body is tissue.