# US 8,786,689 B1 · Modular optical medical diagnostic system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,786,689 B1 - Document ID: US8786689B1 - Status: Granted - Kind: B1 - Application number: 13/085,482 - Filed: 2011-04-13 - Granted: 2014-07-22 - Earliest claimed: 2010-04-15 - Applicants: Yongqian R. Liu - Inventors: Yongqian R. Liu - Web page: https://patentgrep.com/patent/US8786689B1 ## CPC - A61B 1/24: for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth - A61B 1/00034: {rechargeable} - A61B 1/00105: {characterised by modular construction} - A61B 1/0638: {providing two or more wavelengths} - A61B 1/0646: {with illumination filters} - A61B 1/0684: {using light emitting diodes [LED]} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An optical medical diagnostic system is disclosed comprising a LED light assembly, a controller portion and a power portion where the modular LED light assembly can switch from one operating wavelength LED light assembly to another wavelength LED light assembly. The generated fluorescence image may be viewed through a fluorescence band pass filter assembly mounted on the light handle and viewing angle can be adjusted through its tilt arm. The band pass filter blocks the excitation wavelength and passes the fluorescence wavelength. ## Claims ### Claim 1 An optical medical diagnostic system comprising: a light portion comprising: a light assembly comprising: an LED light source configured to emit violet light between 380 and 430 nm, a mounting structure coupled to the LED light source, the mounting assembly having a reflective surface positioned adjacent to the LED light source, a Fresnel collimating lens positioned adjacent to the reflective surface and coupled to the mounting structure, a transparent cover positioned adjacent to the Fresnel collimating lens and coupled to the Fresnel lens, a longitudinal housing, wherein the light assembly is positioned on a distal end of the longitudinal housing at a predetermined angle between 5 and 90 degrees, a first body connection mechanism coupled to a proximal end portion of the longitudinal housing, and a plurality of contact pins in electrical communication with the LED light source and coupled to the proximal end portion of the longitudinal housing, a filter assembly comprising: a first fluorescence filter, a second fluorescence filter, a filter holder having cavity sized to receive the first and second fluorescence filter, a filter retaining ring adapted to couple to the filter holder, a first light hood having exterior mounting threads adapted to couple to the filter holder, a semi-circular clip portion rotatably coupled to the filter holder such that the filter holder can rotate with respect to the semi-circular clip portion, a controller portion comprising: a controller housing, control circuitry positioned within the controller housing for sending and receiving control signals to the light source, a user interface coupled to the control circuitry and coupled to an external surface of the controller housing, a display coupled to the control circuitry and coupled to an external surface of the controller housing, a second body connector mechanism positioned on the distal end portion of the controller housing configured to couple with the first body connector mechanism of the light portion such that when the light portion is coupled to the controller portion, the light portion rotates with respect to the controller portion, a power portion comprising: a rechargeable battery, a power housing formed and sized to receive the rechargeable battery. ### Claim 2 (depends on 1) The system of claim 1, wherein the longitudinal housing is formed from a high heat conducting material. ### Claim 3 (depends on 1) The system of claim 1, further comprising a directional collimating hyper-hemispherical lens positioned between the LED light source and the Fresnel collimating lens. ### Claim 4 (depends on 1) The system of claim 1, wherein the head portion is detachable and removable from the control portion. ### Claim 5 (depends on 1) The system of claim 1, wherein the reflective surface is a parabolic reflective surface. ### Claim 6 (depends on 1) The system of claim 1, further comprising a diode heat sink thermally coupled to the LED light source. ### Claim 7 (depends on 1) The system of claim 1, wherein the first body connection mechanism is a O-ring positioned within a groove. ### Claim 8 (depends on 1) The system of claim 1, further comprising a second light assembly having a LED light source configured to emit white light. ### Claim 9 (depends on 1) The system of claim 1, further comprising a third light assembly having a LED light source configured to emit green light between 500 and 580 nm. ### Claim 10 (depends on 1) The system of claim 1, further comprising a fourth light assembly having a LED light source configured to emit blue light between 430 and 490 nm. ### Claim 11 (depends on 1) The system of claim 1, further comprising a convex circumferential ring defined on the exterior surface of the longitudinal housing and a concave slot defined within an interior surface of the semi-circular clip sized to mate with the convex circumferential ring. ### Claim 12 (depends on 1) The system of claim 1, further comprising a second light hood adapted to couple to the first light hood. ### Claim 13 (depends on 1) The system of claim 1, wherein the second body connector mechanism is a ring slot defined within an interior surface of the controller housing. ### Claim 14 (depends on 1) The system of claim 1, wherein the power portion further comprises a controller interface portion for communicating with the controller portion. ### Claim 15 (depends on 1) The system of claim 1, wherein the power portion further comprises a power interface for receiving current from a charging device. ### Claim 16 (depends on 1) The system of claim 1, wherein the power portion further comprises a control board for controlling the battery charging. ### Claim 17 An optical medical diagnostic system comprising: a light portion comprising: a light assembly comprising: an LED light source configured to emit violet light between 380 and 430 nm, a mounting structure coupled to the LED light source, the mounting assembly having a reflective surface positioned adjacent to the LED light source, a Fresnel collimating lens positioned adjacent to the reflective surface and coupled to the mounting structure, a transparent cover positioned adjacent to the Fresnel collimating lens and coupled to the Fresnel lens, a longitudinal housing, wherein the light assembly is positioned on a distal end of the longitudinal housing at a predetermined angle between 5 and 90 degrees, a first body connection mechanism coupled to a proximal end portion of the longitudinal housing, and a plurality of contact pins in electrical communication with the LED light source and coupled to the proximal end portion of the longitudinal housing, a controller portion comprising: a controller housing, control circuitry positioned within the controller housing for sending and receiving control signals to the light source, a user interface coupled to the control circuitry and coupled to an external surface of the controller housing, a display coupled to the control circuitry and coupled to an external surface of the controller housing, a second body connector mechanism positioned on the distal end portion of the controller housing configured to couple with the first body connector mechanism of the light portion such that when the light portion is coupled to the controller portion, the light portion rotates with respect to the controller portion, a power portion comprising: a rechargeable battery, a power housing formed and sized to receive the rechargeable battery; a loupe assembly comprising a first fluorescence filter, a second fluorescence filter, a filter holder adapted to hold the first and second fluorescence filters, an eye glass assembly adapted to be worn by a human, an adapter ring sized to couple with the eye glass assembly, a rotating mechanism adapted to rotate the filter holder with respect to the eye glass assembly.