# US 9,155,458 B2 · Portable device for cervical inspection comprising groups of light-emitting diodes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,155,458 B2 - Document ID: US9155458B2 - Status: Granted - Kind: B2 - Application number: 13/698,983 - Filed: 2011-05-18 - Published: 2013-03-14 - Granted: 2015-10-13 - Earliest claimed: 2010-05-18 - Assignees: Gynius AB - Applicants: Isaac Shemer; Elisabeth Wikstrom Shemer; Matthew Volsky - Inventors: Isaac Shemer; Elisabeth Wikstrom Shemer; Matthew Volsky - Web page: https://patentgrep.com/patent/US9155458B2 ## CPC - A61B 1/0655: {Control therefor} - A61B 1/0607: {for annular illumination} - A61B 1/0638: {providing two or more wavelengths} - A61B 1/0676: {at distal tip of an endoscope} - A61B 1/0684: {using light emitting diodes [LED]} - A61B 1/303: for the vagina, i.e. vaginoscopes - A61B 5/4331: {of the cervix (A61B5/435 takes precedence)} - A61B 5/0084: {for introduction into the body, e.g. by catheters (A61B5/1459 takes precedence)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## 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 ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 1) 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. ### Claim 4 (depends on 1) 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. ### Claim 5 (depends on 4) 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. ### Claim 6 (depends on 1) 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. ### Claim 7 (depends on 1) The portable device as claimed in claim 1, further comprising at least one collimating element. ### Claim 8 (depends on 1) 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. ### Claim 9 (depends on 1) The portable device as claimed in claim 1, further comprising at least one polarization element. ### Claim 10 (depends on 1) The portable device as claimed in claim 1, further comprising at least one display element configured to display a view of a cervix. ### Claim 11 (depends on 1) The portable device as claimed in claim 1, further comprising at least one registration element configured to register a view of a cervix. ### Claim 12 (depends on 1) 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. ### Claim 13 (depends on 1) The portable device as claimed in claim 1, wherein said portion of said body is a cervix. ### Claim 14 (depends on 1) The portable device as claimed in claim 1, wherein said portion of said body is a body cavity. ### Claim 15 (depends on 1) The portable device as claimed in claim 1, wherein said portion of said body is tissue. ### Claim 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. ### Claim 17 (depends on 16) 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. ### Claim 18 (depends on 16) 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. ### Claim 19 (depends on 16) 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. ### Claim 20 (depends on 16) 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. ### Claim 21 (depends on 20) 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. ### Claim 22 (depends on 16) The portable device as claimed in claim 16, further comprising at least one collimating element. ### Claim 23 (depends on 16) 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. ### Claim 24 (depends on 16) The portable device as claimed in claim 16, further comprising at least one polarization element. ### Claim 25 (depends on 16) The portable device as claimed in claim 16, further comprising at least one display element configured to display a view of a cervix. ### Claim 26 (depends on 16) The portable device as claimed in claim 16, further comprising at least one registration element configured to register a view of a cervix. ### Claim 27 (depends on 16) 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. ### Claim 28 (depends on 16) The portable device as claimed in claim 16, wherein said portion of said body is a cervix. ### Claim 29 (depends on 16) The portable device as claimed in claim 16, wherein said portion of said body is a body cavity. ### Claim 30 (depends on 16) The portable device as claimed in claim 16, wherein said portion of said body is tissue.